/* GTK - The GIMP Toolkit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */

/*
 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
 */

#include <config.h>
#include <math.h>
#include <string.h>

#include "eel-editable-label.h"
#include "eel-marshal.h"
#include "eel-accessibility.h"
#include "eel-gtk-extensions.h"

#include <libgail-util/gailmisc.h>

#include <glib/gi18n-lib.h>
#include <pango/pango.h>
#include <gtk/gtk.h>
#include <gtk/gtk-a11y.h>
#include <gdk/gdkx.h>
#include <gdk/gdkkeysyms.h>

#ifndef PANGO_CHECK_VERSION
#define PANGO_CHECK_VERSION(major, minor, micro)                          \
     (PANGO_VERSION_MAJOR > (major) ||                                    \
     (PANGO_VERSION_MAJOR == (major) && PANGO_VERSION_MINOR > (minor)) || \
     (PANGO_VERSION_MAJOR == (major) && PANGO_VERSION_MINOR == (minor) && \
      PANGO_VERSION_MICRO >= (micro)))
#endif


enum
{
    MOVE_CURSOR,
    POPULATE_POPUP,
    DELETE_FROM_CURSOR,
    CUT_CLIPBOARD,
    COPY_CLIPBOARD,
    PASTE_CLIPBOARD,
    TOGGLE_OVERWRITE,
    LAST_SIGNAL
};

enum
{
    PROP_0,
    PROP_TEXT,
    PROP_JUSTIFY,
    PROP_WRAP,
    PROP_CURSOR_POSITION,
    PROP_SELECTION_BOUND
};

static guint signals[LAST_SIGNAL] = { 0 };

static void     eel_editable_label_editable_init           (GtkEditableInterface  *iface);
static void     eel_editable_label_set_property            (GObject               *object,
        guint                  prop_id,
        const GValue          *value,
        GParamSpec            *pspec);
static void     eel_editable_label_get_property            (GObject               *object,
        guint                  prop_id,
        GValue                *value,
        GParamSpec            *pspec);
static void     eel_editable_label_finalize                (GObject               *object);

static void     eel_editable_label_get_preferred_width     (GtkWidget             *widget,
        						    gint                  *minimum,
        						    gint                  *natural);
static void     eel_editable_label_get_preferred_height    (GtkWidget             *widget,
        						    gint                  *minimum,
        						    gint                  *natural);

static void     eel_editable_label_size_allocate           (GtkWidget             *widget,
        GtkAllocation         *allocation);
static void     eel_editable_label_state_changed           (GtkWidget             *widget,
        GtkStateType           state);

static void     eel_editable_label_style_updated           (GtkWidget             *widget);

static void     eel_editable_label_direction_changed       (GtkWidget             *widget,
        GtkTextDirection       previous_dir);

static gint     eel_editable_label_draw                    (GtkWidget             *widget,
    							    cairo_t               *cr);

static void     eel_editable_label_realize                 (GtkWidget             *widget);
static void     eel_editable_label_unrealize               (GtkWidget             *widget);
static void     eel_editable_label_map                     (GtkWidget             *widget);
static void     eel_editable_label_unmap                   (GtkWidget             *widget);
static gint     eel_editable_label_button_press            (GtkWidget             *widget,
        GdkEventButton        *event);
static gint     eel_editable_label_button_release          (GtkWidget             *widget,
        GdkEventButton        *event);
static gint     eel_editable_label_motion                  (GtkWidget             *widget,
        GdkEventMotion        *event);
static gint     eel_editable_label_key_press               (GtkWidget             *widget,
        GdkEventKey           *event);
static gint     eel_editable_label_key_release             (GtkWidget             *widget,
        GdkEventKey           *event);
static gint     eel_editable_label_focus_in                (GtkWidget             *widget,
        GdkEventFocus         *event);
static gint     eel_editable_label_focus_out               (GtkWidget             *widget,
        GdkEventFocus         *event);
static GType      eel_editable_label_accessible_get_type   (void);

static void     eel_editable_label_commit_cb               (GtkIMContext          *context,
        const gchar           *str,
        EelEditableLabel      *label);
static void     eel_editable_label_preedit_changed_cb      (GtkIMContext          *context,
        EelEditableLabel      *label);
static gboolean eel_editable_label_retrieve_surrounding_cb (GtkIMContext          *context,
        EelEditableLabel      *label);
static gboolean eel_editable_label_delete_surrounding_cb   (GtkIMContext          *slave,
        gint                   offset,
        gint                   n_chars,
        EelEditableLabel      *label);
static void     eel_editable_label_clear_layout            (EelEditableLabel      *label);
static void     eel_editable_label_recompute               (EelEditableLabel      *label);
static void     eel_editable_label_ensure_layout           (EelEditableLabel      *label,
        gboolean               include_preedit);
static void     eel_editable_label_select_region_index     (EelEditableLabel      *label,
        gint                   anchor_index,
        gint                   end_index);
static gboolean eel_editable_label_focus                   (GtkWidget             *widget,
        GtkDirectionType       direction);
static void     eel_editable_label_move_cursor             (EelEditableLabel      *label,
        GtkMovementStep        step,
        gint                   count,
        gboolean               extend_selection);
static void     eel_editable_label_delete_from_cursor      (EelEditableLabel      *label,
        GtkDeleteType          type,
        gint                   count);
static void     eel_editable_label_copy_clipboard          (EelEditableLabel      *label);
static void     eel_editable_label_cut_clipboard           (EelEditableLabel      *label);
static void     eel_editable_label_paste                   (EelEditableLabel      *label,
        GdkAtom                selection);
static void     eel_editable_label_paste_clipboard         (EelEditableLabel      *label);
static void     eel_editable_label_select_all              (EelEditableLabel      *label);
static void     eel_editable_label_do_popup                (EelEditableLabel      *label,
        GdkEventButton        *event);
static void     eel_editable_label_toggle_overwrite        (EelEditableLabel      *label);
static gint     eel_editable_label_move_forward_word       (EelEditableLabel      *label,
        gint                   start);
static gint     eel_editable_label_move_backward_word      (EelEditableLabel      *label,
        gint                   start);
static void     eel_editable_label_reset_im_context        (EelEditableLabel      *label);
static void     eel_editable_label_check_cursor_blink      (EelEditableLabel      *label);
static void     eel_editable_label_pend_cursor_blink       (EelEditableLabel      *label);

/* Editable implementation: */
static void     editable_insert_text_emit     (GtkEditable *editable,
        const gchar *new_text,
        gint         new_text_length,
        gint        *position);
static void     editable_delete_text_emit     (GtkEditable *editable,
        gint         start_pos,
        gint         end_pos);
static void     editable_insert_text          (GtkEditable *editable,
        const gchar *new_text,
        gint         new_text_length,
        gint        *position);
static void     editable_delete_text          (GtkEditable *editable,
        gint         start_pos,
        gint         end_pos);
static gchar *  editable_get_chars            (GtkEditable *editable,
        gint         start_pos,
        gint         end_pos);
static void     editable_set_selection_bounds (GtkEditable *editable,
        gint         start,
        gint         end);
static gboolean editable_get_selection_bounds (GtkEditable *editable,
        gint        *start,
        gint        *end);
static void     editable_real_set_position    (GtkEditable *editable,
        gint         position);
static gint     editable_get_position         (GtkEditable *editable);

G_DEFINE_TYPE_WITH_CODE (EelEditableLabel, eel_editable_label, GTK_TYPE_WIDGET,

                         G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE, eel_editable_label_editable_init));

static void
add_move_binding (GtkBindingSet  *binding_set,
                  guint           keyval,
                  guint           modmask,
                  GtkMovementStep step,
                  gint            count)
{
    g_assert ((modmask & GDK_SHIFT_MASK) == 0);

    gtk_binding_entry_add_signal (binding_set, keyval, modmask,
                                  "move_cursor", 3,
                                  G_TYPE_ENUM, step,
                                  G_TYPE_INT, count,
                                  G_TYPE_BOOLEAN, FALSE);

    /* Selection-extending version */
    gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
                                  "move_cursor", 3,
                                  G_TYPE_ENUM, step,
                                  G_TYPE_INT, count,
                                  G_TYPE_BOOLEAN, TRUE);
}

static void
eel_editable_label_class_init (EelEditableLabelClass *class)
{
    GObjectClass *gobject_class = G_OBJECT_CLASS (class);
    GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
    GtkBindingSet *binding_set;

    gobject_class->set_property = eel_editable_label_set_property;
    gobject_class->get_property = eel_editable_label_get_property;
    gobject_class->finalize = eel_editable_label_finalize;


    widget_class->get_preferred_width = eel_editable_label_get_preferred_width;
    widget_class->get_preferred_height = eel_editable_label_get_preferred_height;
    widget_class->size_allocate = eel_editable_label_size_allocate;
    widget_class->state_changed = eel_editable_label_state_changed;
    widget_class->style_updated = eel_editable_label_style_updated;
    widget_class->direction_changed = eel_editable_label_direction_changed;
    widget_class->draw = eel_editable_label_draw;
    widget_class->realize = eel_editable_label_realize;
    widget_class->unrealize = eel_editable_label_unrealize;
    widget_class->map = eel_editable_label_map;
    widget_class->unmap = eel_editable_label_unmap;
    widget_class->button_press_event = eel_editable_label_button_press;
    widget_class->button_release_event = eel_editable_label_button_release;
    widget_class->motion_notify_event = eel_editable_label_motion;
    widget_class->focus = eel_editable_label_focus;
    widget_class->key_press_event = eel_editable_label_key_press;
    widget_class->key_release_event = eel_editable_label_key_release;
    widget_class->focus_in_event = eel_editable_label_focus_in;
    widget_class->focus_out_event = eel_editable_label_focus_out;
    gtk_widget_class_set_accessible_type (widget_class, eel_editable_label_accessible_get_type ());


    class->move_cursor = eel_editable_label_move_cursor;
    class->delete_from_cursor = eel_editable_label_delete_from_cursor;
    class->copy_clipboard = eel_editable_label_copy_clipboard;
    class->cut_clipboard = eel_editable_label_cut_clipboard;
    class->paste_clipboard = eel_editable_label_paste_clipboard;
    class->toggle_overwrite = eel_editable_label_toggle_overwrite;

    signals[MOVE_CURSOR] =
        g_signal_new ("move_cursor",
                      G_TYPE_FROM_CLASS (class),
                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                      G_STRUCT_OFFSET (EelEditableLabelClass, move_cursor),
                      NULL, NULL,
                      eel_marshal_VOID__ENUM_INT_BOOLEAN,
                      G_TYPE_NONE, 3, GTK_TYPE_MOVEMENT_STEP, G_TYPE_INT, G_TYPE_BOOLEAN);

    signals[COPY_CLIPBOARD] =
        g_signal_new ("copy_clipboard",
                      G_TYPE_FROM_CLASS (class),
                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                      G_STRUCT_OFFSET  (EelEditableLabelClass, copy_clipboard),
                      NULL, NULL,
                      g_cclosure_marshal_VOID__VOID,
                      G_TYPE_NONE, 0);

    signals[POPULATE_POPUP] =
        g_signal_new ("populate_popup",
                      G_TYPE_FROM_CLASS (class),
                      G_SIGNAL_RUN_LAST,
                      G_STRUCT_OFFSET (EelEditableLabelClass, populate_popup),
                      NULL, NULL,
                      g_cclosure_marshal_VOID__OBJECT,
                      G_TYPE_NONE, 1, GTK_TYPE_MENU);

    signals[DELETE_FROM_CURSOR] =
        g_signal_new ("delete_from_cursor",
                      G_TYPE_FROM_CLASS (class),
                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                      G_STRUCT_OFFSET (EelEditableLabelClass, delete_from_cursor),
                      NULL, NULL,
                      eel_marshal_VOID__ENUM_INT,
                      G_TYPE_NONE, 2, GTK_TYPE_DELETE_TYPE, G_TYPE_INT);

    signals[CUT_CLIPBOARD] =
        g_signal_new ("cut_clipboard",
                      G_TYPE_FROM_CLASS (class),
                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                      G_STRUCT_OFFSET (EelEditableLabelClass, cut_clipboard),
                      NULL, NULL,
                      g_cclosure_marshal_VOID__VOID,
                      G_TYPE_NONE, 0);

    signals[PASTE_CLIPBOARD] =
        g_signal_new ("paste_clipboard",
                      G_TYPE_FROM_CLASS (class),
                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                      G_STRUCT_OFFSET (EelEditableLabelClass, paste_clipboard),
                      NULL, NULL,
                      g_cclosure_marshal_VOID__VOID,
                      G_TYPE_NONE, 0);

    signals[TOGGLE_OVERWRITE] =
        g_signal_new ("toggle_overwrite",
                      G_TYPE_FROM_CLASS (class),
                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                      G_STRUCT_OFFSET (EelEditableLabelClass, toggle_overwrite),
                      NULL, NULL,
                      g_cclosure_marshal_VOID__VOID,
                      G_TYPE_NONE, 0);


    g_object_class_install_property (gobject_class,
                                     PROP_TEXT,
                                     g_param_spec_string ("text",
                                             _("Text"),
                                             _("The text of the label."),
                                             NULL,
                                             G_PARAM_READWRITE));
    g_object_class_install_property (gobject_class,
                                     PROP_JUSTIFY,
                                     g_param_spec_enum ("justify",
                                             _("Justification"),
                                             _("The alignment of the lines in the text of the label relative to each other. This does NOT affect the alignment of the label within its allocation. See GtkMisc::xalign for that."),
                                             GTK_TYPE_JUSTIFICATION,
                                             GTK_JUSTIFY_LEFT,
                                             G_PARAM_READWRITE));

    g_object_class_install_property (gobject_class,
                                     PROP_WRAP,
                                     g_param_spec_boolean ("wrap",
                                             _("Line wrap"),
                                             _("If set, wrap lines if the text becomes too wide."),
                                             FALSE,
                                             G_PARAM_READWRITE));

    g_object_class_install_property (gobject_class,
                                     PROP_CURSOR_POSITION,
                                     g_param_spec_int ("cursor_position",
                                             _("Cursor Position"),
                                             _("The current position of the insertion cursor in chars."),
                                             0,
                                             G_MAXINT,
                                             0,
                                             G_PARAM_READABLE));

    g_object_class_install_property (gobject_class,
                                     PROP_SELECTION_BOUND,
                                     g_param_spec_int ("selection_bound",
                                             _("Selection Bound"),
                                             _("The position of the opposite end of the selection from the cursor in chars."),
                                             0,
                                             G_MAXINT,
                                             0,
                                             G_PARAM_READABLE));

    /*
     * Key bindings
     */

    binding_set = gtk_binding_set_by_class (class);

    /* Moving the insertion point */
    add_move_binding (binding_set, GDK_KEY_Right, 0,
                      GTK_MOVEMENT_VISUAL_POSITIONS, 1);

    add_move_binding (binding_set, GDK_KEY_Left, 0,
                      GTK_MOVEMENT_VISUAL_POSITIONS, -1);

    add_move_binding (binding_set, GDK_KEY_KP_Right, 0,
                      GTK_MOVEMENT_VISUAL_POSITIONS, 1);

    add_move_binding (binding_set, GDK_KEY_KP_Left, 0,
                      GTK_MOVEMENT_VISUAL_POSITIONS, -1);

    add_move_binding (binding_set, GDK_KEY_f, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_LOGICAL_POSITIONS, 1);

    add_move_binding (binding_set, GDK_KEY_b, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_LOGICAL_POSITIONS, -1);

    add_move_binding (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_WORDS, 1);

    add_move_binding (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_WORDS, -1);

    add_move_binding (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_WORDS, 1);

    add_move_binding (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_WORDS, -1);

    add_move_binding (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_PARAGRAPH_ENDS, -1);

    add_move_binding (binding_set, GDK_KEY_e, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_PARAGRAPH_ENDS, 1);

    add_move_binding (binding_set, GDK_KEY_f, GDK_MOD1_MASK,
                      GTK_MOVEMENT_WORDS, 1);

    add_move_binding (binding_set, GDK_KEY_b, GDK_MOD1_MASK,
                      GTK_MOVEMENT_WORDS, -1);

    add_move_binding (binding_set, GDK_KEY_Home, 0,
                      GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);

    add_move_binding (binding_set, GDK_KEY_End, 0,
                      GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);

    add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
                      GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);

    add_move_binding (binding_set, GDK_KEY_KP_End, 0,
                      GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);

    add_move_binding (binding_set, GDK_KEY_Home, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_BUFFER_ENDS, -1);

    add_move_binding (binding_set, GDK_KEY_End, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_BUFFER_ENDS, 1);

    add_move_binding (binding_set, GDK_KEY_KP_Home, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_BUFFER_ENDS, -1);

    add_move_binding (binding_set, GDK_KEY_KP_End, GDK_CONTROL_MASK,
                      GTK_MOVEMENT_BUFFER_ENDS, 1);

    add_move_binding (binding_set, GDK_KEY_Up, 0,
                      GTK_MOVEMENT_DISPLAY_LINES, -1);

    add_move_binding (binding_set, GDK_KEY_KP_Up, 0,
                      GTK_MOVEMENT_DISPLAY_LINES, -1);

    add_move_binding (binding_set, GDK_KEY_Down, 0,
                      GTK_MOVEMENT_DISPLAY_LINES, 1);

    add_move_binding (binding_set, GDK_KEY_KP_Down, 0,
                      GTK_MOVEMENT_DISPLAY_LINES, 1);

    /* Select all
     */
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
                                  "move_cursor", 3,
                                  GTK_TYPE_MOVEMENT_STEP, GTK_MOVEMENT_BUFFER_ENDS,
                                  G_TYPE_INT, -1,
                                  G_TYPE_BOOLEAN, FALSE);
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
                                  "move_cursor", 3,
                                  GTK_TYPE_MOVEMENT_STEP, GTK_MOVEMENT_BUFFER_ENDS,
                                  G_TYPE_INT, 1,
                                  G_TYPE_BOOLEAN, TRUE);

    /* Deleting text */
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, 0,
                                  "delete_from_cursor", 2,
                                  G_TYPE_ENUM, GTK_DELETE_CHARS,
                                  G_TYPE_INT, 1);

    gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Delete, 0,
                                  "delete_from_cursor", 2,
                                  G_TYPE_ENUM, GTK_DELETE_CHARS,
                                  G_TYPE_INT, 1);

    gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0,
                                  "delete_from_cursor", 2,
                                  G_TYPE_ENUM, GTK_DELETE_CHARS,
                                  G_TYPE_INT, -1);

    /* Make this do the same as Backspace, to help with mis-typing */
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_SHIFT_MASK,
                                  "delete_from_cursor", 2,
                                  G_TYPE_ENUM, GTK_DELETE_CHARS,
                                  G_TYPE_INT, -1);

    gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, GDK_CONTROL_MASK,
                                  "delete_from_cursor", 2,
                                  G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
                                  G_TYPE_INT, 1);

    gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Delete, GDK_CONTROL_MASK,
                                  "delete_from_cursor", 2,
                                  G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
                                  G_TYPE_INT, 1);

    gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK,
                                  "delete_from_cursor", 2,
                                  G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
                                  G_TYPE_INT, -1);

    /* Cut/copy/paste */

    gtk_binding_entry_add_signal (binding_set, GDK_KEY_x, GDK_CONTROL_MASK,
                                  "cut_clipboard", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_c, GDK_CONTROL_MASK,
                                  "copy_clipboard", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_v, GDK_CONTROL_MASK,
                                  "paste_clipboard", 0);

    gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, GDK_SHIFT_MASK,
                                  "cut_clipboard", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, GDK_CONTROL_MASK,
                                  "copy_clipboard", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, GDK_SHIFT_MASK,
                                  "paste_clipboard", 0);

    /* Overwrite */
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, 0,
                                  "toggle_overwrite", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Insert, 0,
                                  "toggle_overwrite", 0);
}

static void
eel_editable_label_editable_init (GtkEditableInterface *iface)
{
    iface->do_insert_text = editable_insert_text_emit;
    iface->do_delete_text = editable_delete_text_emit;
    iface->insert_text = editable_insert_text;
    iface->delete_text = editable_delete_text;
    iface->get_chars = editable_get_chars;
    iface->set_selection_bounds = editable_set_selection_bounds;
    iface->get_selection_bounds = editable_get_selection_bounds;
    iface->set_position = editable_real_set_position;
    iface->get_position = editable_get_position;
}


static void
eel_editable_label_set_property (GObject      *object,
                                 guint         prop_id,
                                 const GValue *value,
                                 GParamSpec   *pspec)
{
    EelEditableLabel *label;

    label = EEL_EDITABLE_LABEL (object);

    switch (prop_id)
    {
    case PROP_TEXT:
        eel_editable_label_set_text (label, g_value_get_string (value));
        break;
    case PROP_JUSTIFY:
        eel_editable_label_set_justify (label, g_value_get_enum (value));
        break;
    case PROP_WRAP:
        eel_editable_label_set_line_wrap (label, g_value_get_boolean (value));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
eel_editable_label_get_property (GObject     *object,
                                 guint        prop_id,
                                 GValue      *value,
                                 GParamSpec  *pspec)
{
    EelEditableLabel *label;
    gint offset;

    label = EEL_EDITABLE_LABEL (object);

    switch (prop_id)
    {
    case PROP_TEXT:
        g_value_set_string (value, label->text);
        break;
    case PROP_JUSTIFY:
        g_value_set_enum (value, label->jtype);
        break;
    case PROP_WRAP:
        g_value_set_boolean (value, label->wrap);
        break;
    case PROP_CURSOR_POSITION:
        offset = g_utf8_pointer_to_offset (label->text,
                                           label->text + label->selection_end);
        g_value_set_int (value, offset);
        break;
    case PROP_SELECTION_BOUND:
        offset = g_utf8_pointer_to_offset (label->text,
                                           label->text + label->selection_anchor);
        g_value_set_int (value, offset);
        break;

    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
eel_editable_label_init (EelEditableLabel *label)
{
    label->jtype = GTK_JUSTIFY_LEFT;
    label->wrap = FALSE;
    label->wrap_mode = PANGO_WRAP_WORD;

    label->layout = NULL;
    label->text_size = 1;
    label->text = g_malloc (label->text_size);
    label->text[0] = '\0';
    label->n_bytes = 0;

    gtk_widget_set_can_focus (GTK_WIDGET (label), TRUE);

    gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (label)),
                                 GTK_STYLE_CLASS_ENTRY);

    /* This object is completely private. No external entity can gain a reference
    * to it; so we create it here and destroy it in finalize().
    */
    label->im_context = gtk_im_multicontext_new ();

    g_signal_connect (G_OBJECT (label->im_context), "commit",
                      G_CALLBACK (eel_editable_label_commit_cb), label);
    g_signal_connect (G_OBJECT (label->im_context), "preedit_changed",
                      G_CALLBACK (eel_editable_label_preedit_changed_cb), label);
    g_signal_connect (G_OBJECT (label->im_context), "retrieve_surrounding",
                      G_CALLBACK (eel_editable_label_retrieve_surrounding_cb), label);
    g_signal_connect (G_OBJECT (label->im_context), "delete_surrounding",
                      G_CALLBACK (eel_editable_label_delete_surrounding_cb), label);
}

/**
 * eel_editable_label_new:
 * @str: The text of the label
 *
 * Creates a new label with the given text inside it. You can
 * pass %NULL to get an empty label widget.
 *
 * Return value: the new #EelEditableLabel
 **/
GtkWidget*
eel_editable_label_new (const gchar *str)
{
    EelEditableLabel *label;

    label = g_object_new (EEL_TYPE_EDITABLE_LABEL, NULL);

    if (str && *str)
        eel_editable_label_set_text (label, str);

    return GTK_WIDGET (label);
}

/**
 * eel_editable_label_set_text:
 * @label: a #EelEditableLabel
 * @str: The text you want to set.
 *
 * Sets the text within the #EelEditableLabel widget.  It overwrites any text that
 * was there before.
 *
 * This will also clear any previously set mnemonic accelerators.
 **/
void
eel_editable_label_set_text (EelEditableLabel *label,
                             const gchar *str)
{
    GtkEditable *editable;
    int tmp_pos;

    g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));
    g_return_if_fail (str != NULL);

    if (strcmp (label->text, str) == 0)
        return;

    editable = GTK_EDITABLE (label);
    gtk_editable_delete_text (editable, 0, -1);
    tmp_pos = 0;
    gtk_editable_insert_text (editable, str, strlen (str), &tmp_pos);
}

/**
 * eel_editable_label_get_text:
 * @label: a #EelEditableLabel
 *
 * Fetches the text from a label widget, as displayed on the
 * screen. This does not include any embedded underlines
 * indicating mnemonics or Pango markup. (See eel_editable_label_get_label())
 *
 * Return value: the text in the label widget. This is the internal
 *   string used by the label, and must not be modified.
 **/
const gchar* eel_editable_label_get_text(EelEditableLabel* label)
{
    g_return_val_if_fail(EEL_IS_EDITABLE_LABEL(label), NULL);

    return label->text;
}

/**
 * eel_editable_label_set_justify:
 * @label: a #EelEditableLabel
 * @jtype: a #GtkJustification
 *
 * Sets the alignment of the lines in the text of the label relative to
 * each other.  %GTK_JUSTIFY_LEFT is the default value when the
 * widget is first created with eel_editable_label_new(). If you instead want
 * to set the alignment of the label as a whole, use
 * gtk_misc_set_alignment() instead. eel_editable_label_set_justify() has no
 * effect on labels containing only a single line.
 **/
void
eel_editable_label_set_justify (EelEditableLabel        *label,
                                GtkJustification jtype)
{
    g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));
    g_return_if_fail (jtype >= GTK_JUSTIFY_LEFT && jtype <= GTK_JUSTIFY_FILL);

    if ((GtkJustification) label->jtype != jtype)
    {
        label->jtype = jtype;

        /* No real need to be this drastic, but easier than duplicating the code */
        eel_editable_label_recompute (label);

        g_object_notify (G_OBJECT (label), "justify");
        gtk_widget_queue_resize (GTK_WIDGET (label));
    }
}

/**
 * eel_editable_label_get_justify:
 * @label: a #EelEditableLabel
 *
 * Returns the justification of the label. See eel_editable_label_set_justify ().
 *
 * Return value: #GtkJustification
 **/
GtkJustification
eel_editable_label_get_justify (EelEditableLabel *label)
{
    g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), 0);

    return label->jtype;
}

void
eel_editable_label_set_draw_outline (EelEditableLabel *label,
                                     gboolean          draw_outline)
{
    draw_outline = draw_outline != FALSE;

    if (label->draw_outline != draw_outline)
    {
        label->draw_outline = draw_outline;

        gtk_widget_queue_draw (GTK_WIDGET (label));
    }

}


/**
 * eel_editable_label_set_line_wrap:
 * @label: a #EelEditableLabel
 * @wrap: the setting
 *
 * Toggles line wrapping within the #EelEditableLabel widget.  %TRUE makes it break
 * lines if text exceeds the widget's size.  %FALSE lets the text get cut off
 * by the edge of the widget if it exceeds the widget size.
 **/
void
eel_editable_label_set_line_wrap (EelEditableLabel *label,
                                  gboolean  wrap)
{
    g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));

    wrap = wrap != FALSE;

    if (label->wrap != wrap)
    {
        label->wrap = wrap;
        g_object_notify (G_OBJECT (label), "wrap");

        gtk_widget_queue_resize (GTK_WIDGET (label));
    }
}


void
eel_editable_label_set_line_wrap_mode (EelEditableLabel *label,
                                       PangoWrapMode     mode)
{
    g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));

    if (label->wrap_mode != mode)
    {
        label->wrap_mode = mode;

        gtk_widget_queue_resize (GTK_WIDGET (label));
    }

}


/**
 * eel_editable_label_get_line_wrap:
 * @label: a #EelEditableLabel
 *
 * Returns whether lines in the label are automatically wrapped. See eel_editable_label_set_line_wrap ().
 *
 * Return value: %TRUE if the lines of the label are automatically wrapped.
 */
gboolean
eel_editable_label_get_line_wrap (EelEditableLabel *label)
{
    g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), FALSE);

    return label->wrap;
}

PangoFontDescription *
eel_editable_label_get_font_description (EelEditableLabel *label)
{
    if (label->font_desc)
        return pango_font_description_copy (label->font_desc);

    return NULL;
}

void
eel_editable_label_set_font_description (EelEditableLabel *label,
        const PangoFontDescription *desc)
{
    if (label->font_desc)
        pango_font_description_free (label->font_desc);

    if (desc)
        label->font_desc = pango_font_description_copy (desc);
    else
        label->font_desc = NULL;

    eel_editable_label_clear_layout (label);
}

static void
eel_editable_label_finalize (GObject *object)
{
    EelEditableLabel *label;

    g_assert (EEL_IS_EDITABLE_LABEL (object));

    label = EEL_EDITABLE_LABEL (object);

    if (label->font_desc)
    {
        pango_font_description_free (label->font_desc);
        label->font_desc = NULL;
    }

    g_object_unref (G_OBJECT (label->im_context));
    label->im_context = NULL;

    g_free (label->text);
    label->text = NULL;

    if (label->layout)
    {
        g_object_unref (G_OBJECT (label->layout));
        label->layout = NULL;
    }

    G_OBJECT_CLASS (eel_editable_label_parent_class)->finalize (object);
}

static void
eel_editable_label_clear_layout (EelEditableLabel *label)
{
    if (label->layout)
    {
        g_object_unref (G_OBJECT (label->layout));
        label->layout = NULL;
    }
}

static void
eel_editable_label_recompute (EelEditableLabel *label)
{
    eel_editable_label_clear_layout (label);
    eel_editable_label_check_cursor_blink (label);
}

typedef struct _LabelWrapWidth LabelWrapWidth;
struct _LabelWrapWidth
{
    gint width;
    PangoFontDescription *font_desc;
};

static void
label_wrap_width_free (gpointer data)
{
    LabelWrapWidth *wrap_width = data;
    pango_font_description_free (wrap_width->font_desc);
    g_free (wrap_width);
}

static gint
get_label_wrap_width (EelEditableLabel *label)
{
    PangoLayout *layout;
    GtkStyleContext *style = gtk_widget_get_style_context (GTK_WIDGET (label));
    PangoFontDescription *desc;

    LabelWrapWidth *wrap_width = g_object_get_data (G_OBJECT (style), "gtk-label-wrap-width");
    if (!wrap_width)
    {
        wrap_width = g_new0 (LabelWrapWidth, 1);
        g_object_set_data_full (G_OBJECT (style), "gtk-label-wrap-width",
                                wrap_width, label_wrap_width_free);
    }

    gtk_style_context_get (style, gtk_widget_get_state_flags (GTK_WIDGET (label)),
                           GTK_STYLE_PROPERTY_FONT, &desc,
                           NULL);

    if (wrap_width->font_desc && pango_font_description_equal (wrap_width->font_desc, desc))
        goto out;

    if (wrap_width->font_desc)
        pango_font_description_free (wrap_width->font_desc);

    wrap_width->font_desc = pango_font_description_copy (desc);

    layout = gtk_widget_create_pango_layout (GTK_WIDGET (label),
             "This long string gives a good enough length for any line to have.");
    pango_layout_get_size (layout, &wrap_width->width, NULL);
    g_object_unref (layout);

    out:
    pango_font_description_free (desc);
    return wrap_width->width;
}

static void
eel_editable_label_ensure_layout (EelEditableLabel *label,
                                  gboolean        include_preedit)
{
    GtkWidget *widget;
    PangoRectangle logical_rect;

    /* Normalize for comparisons */
    include_preedit = include_preedit != 0;

    if (label->preedit_length > 0 &&
            include_preedit != label->layout_includes_preedit)
        eel_editable_label_clear_layout (label);

    widget = GTK_WIDGET (label);

    if (label->layout == NULL)
    {
        gchar *preedit_string = NULL;
        gint preedit_length = 0;
        PangoAttrList *preedit_attrs = NULL;
        PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */
        PangoAttrList *tmp_attrs = pango_attr_list_new ();

        if (include_preedit)
        {
            gtk_im_context_get_preedit_string (label->im_context,
                                               &preedit_string, &preedit_attrs, NULL);
            preedit_length = label->preedit_length;
        }

        if (preedit_length)
        {
            GString *tmp_string = g_string_new (NULL);

            g_string_prepend_len (tmp_string, label->text, label->n_bytes);
            g_string_insert (tmp_string, label->selection_anchor, preedit_string);

            label->layout = gtk_widget_create_pango_layout (widget, tmp_string->str);

            pango_attr_list_splice (tmp_attrs, preedit_attrs,
                                    label->selection_anchor, preedit_length);

            g_string_free (tmp_string, TRUE);
        }
        else
        {
            label->layout = gtk_widget_create_pango_layout (widget, label->text);
        }
        label->layout_includes_preedit = include_preedit;

        if (label->font_desc != NULL)
            pango_layout_set_font_description (label->layout, label->font_desc);

        #if PANGO_CHECK_VERSION (1, 44, 0)
        pango_attr_list_insert (tmp_attrs, pango_attr_insert_hyphens_new (FALSE));
        #endif
        pango_layout_set_attributes (label->layout, tmp_attrs);

        if (preedit_string)
            g_free (preedit_string);
        if (preedit_attrs)
            pango_attr_list_unref (preedit_attrs);
        pango_attr_list_unref (tmp_attrs);

        switch (label->jtype)
        {
        case GTK_JUSTIFY_LEFT:
            align = PANGO_ALIGN_LEFT;
            break;
        case GTK_JUSTIFY_RIGHT:
            align = PANGO_ALIGN_RIGHT;
            break;
        case GTK_JUSTIFY_CENTER:
            align = PANGO_ALIGN_CENTER;
            break;
        case GTK_JUSTIFY_FILL:
            /* FIXME: This just doesn't work to do this */
            align = PANGO_ALIGN_LEFT;
            pango_layout_set_justify (label->layout, TRUE);
            break;
        default:
            g_assert_not_reached();
        }

        pango_layout_set_alignment (label->layout, align);

        if (label->wrap)
        {
            gint longest_paragraph;
            gint width, height;
            gint set_width;

            gtk_widget_get_size_request (widget, &set_width, NULL);
            if (set_width > 0)
                pango_layout_set_width (label->layout, set_width * PANGO_SCALE);
            else
            {
                gint wrap_width;
                gint scale;

                pango_layout_set_width (label->layout, -1);
                pango_layout_get_extents (label->layout, NULL, &logical_rect);

                width = logical_rect.width;

                /* Try to guess a reasonable maximum width */
                longest_paragraph = width;

                wrap_width = get_label_wrap_width (label);
                scale = gtk_widget_get_scale_factor (widget);
                width = MIN (width, wrap_width);
                width = MIN (width,
                             PANGO_SCALE * (WidthOfScreen (gdk_x11_screen_get_xscreen (gdk_screen_get_default ())) / scale + 1) / 2);

                pango_layout_set_width (label->layout, width);
                pango_layout_get_extents (label->layout, NULL, &logical_rect);
                width = logical_rect.width;
                height = logical_rect.height;

                /* Unfortunately, the above may leave us with a very unbalanced looking paragraph,
                 * so we try short search for a narrower width that leaves us with the same height
                 */
                if (longest_paragraph > 0)
                {
                    gint nlines, perfect_width;

                    nlines = pango_layout_get_line_count (label->layout);
                    perfect_width = (longest_paragraph + nlines - 1) / nlines;

                    if (perfect_width < width)
                    {
                        pango_layout_set_width (label->layout, perfect_width);
                        pango_layout_get_extents (label->layout, NULL, &logical_rect);

                        if (logical_rect.height <= height)
                            width = logical_rect.width;
                        else
                        {
                            gint mid_width = (perfect_width + width) / 2;

                            if (mid_width > perfect_width)
                            {
                                pango_layout_set_width (label->layout, mid_width);
                                pango_layout_get_extents (label->layout, NULL, &logical_rect);

                                if (logical_rect.height <= height)
                                    width = logical_rect.width;
                            }
                        }
                    }
                }
                pango_layout_set_width (label->layout, width);
            }
            pango_layout_set_wrap (label->layout, label->wrap_mode);
        }
        else		/* !label->wrap */
            pango_layout_set_width (label->layout, -1);
    }
}

static void
eel_editable_label_size_request (GtkWidget      *widget,
                                 GtkRequisition *requisition)
{
    EelEditableLabel *label;
    gint width, height;
    PangoRectangle logical_rect;
    gint set_width;
    gint xpad, ypad;
    gint margin_start, margin_end, margin_top, margin_bottom;


    g_assert (EEL_IS_EDITABLE_LABEL (widget));
    g_assert (requisition != NULL);

    label = EEL_EDITABLE_LABEL (widget);

    /*
     * If word wrapping is on, then the height requisition can depend
     * on:
     *
     *   - Any width set on the widget via gtk_widget_set_size_request().
     *   - The padding of the widget (xpad, set by gtk_misc_set_padding)
     *
     * Instead of trying to detect changes to these quantities, if we
     * are wrapping, we just rewrap for each size request. Since
     * size requisitions are cached by the GTK+ core, this is not
     * expensive.
     */

    if (label->wrap)
        eel_editable_label_recompute (label);

    eel_editable_label_ensure_layout (label, TRUE);

    margin_start = gtk_widget_get_margin_start (widget);
    margin_end = gtk_widget_get_margin_end (widget);
    margin_top = gtk_widget_get_margin_top (widget);
    margin_bottom = gtk_widget_get_margin_bottom (widget);

    xpad = margin_start + margin_end;
    ypad = margin_top + margin_bottom;
    width = xpad * 2;
    height = ypad * 2;

    pango_layout_get_extents (label->layout, NULL, &logical_rect);

    gtk_widget_get_size_request (widget, &set_width, NULL);
    if (label->wrap && set_width > 0)
        width += set_width;
    else
        width += PANGO_PIXELS (logical_rect.width);

    height += PANGO_PIXELS (logical_rect.height);

    requisition->width = width;
    requisition->height = height;
}

static void
eel_editable_label_get_preferred_width (GtkWidget *widget,
                                        gint      *minimum,
                                        gint      *natural)
{
  GtkRequisition requisition;

  eel_editable_label_size_request (widget, &requisition);

  *minimum = *natural = requisition.width;
}

static void
eel_editable_label_get_preferred_height (GtkWidget *widget,
                                         gint      *minimum,
                                         gint      *natural)
{
  GtkRequisition requisition;

  eel_editable_label_size_request (widget, &requisition);

  *minimum = *natural = requisition.height;
}

static void
eel_editable_label_size_allocate (GtkWidget     *widget,
                                  GtkAllocation *allocation)
{
    (* GTK_WIDGET_CLASS (eel_editable_label_parent_class)->size_allocate) (widget, allocation);
}

static void
eel_editable_label_state_changed (GtkWidget   *widget,
                                  GtkStateType prev_state)
{
    EelEditableLabel *label;

    label = EEL_EDITABLE_LABEL (widget);

    /* clear any selection if we're insensitive */
    if (!gtk_widget_is_sensitive (widget))
        eel_editable_label_select_region (label, 0, 0);

    if (GTK_WIDGET_CLASS (eel_editable_label_parent_class)->state_changed)
        GTK_WIDGET_CLASS (eel_editable_label_parent_class)->state_changed (widget, prev_state);
}

static void
eel_editable_label_style_updated (GtkWidget *widget)
{
    EelEditableLabel *label;

    g_assert (EEL_IS_EDITABLE_LABEL (widget));

    label = EEL_EDITABLE_LABEL (widget);

    GTK_WIDGET_CLASS (eel_editable_label_parent_class)->style_updated (widget);

    /* We have to clear the layout, fonts etc. may have changed */
    eel_editable_label_recompute (label);
}

static void
eel_editable_label_direction_changed (GtkWidget        *widget,
                                      GtkTextDirection previous_dir)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (widget);

    if (label->layout)
        pango_layout_context_changed (label->layout);

    GTK_WIDGET_CLASS (eel_editable_label_parent_class)->direction_changed (widget, previous_dir);
}

static gfloat
gtk_align_to_gfloat (GtkAlign align)
{
	switch (align) {
		case GTK_ALIGN_START:
			return 0.0;
		case GTK_ALIGN_END:
			return 1.0;
		case GTK_ALIGN_CENTER:
		case GTK_ALIGN_FILL:
			return 0.5;
		default:
			return 0.0;
	}
}

static void
get_layout_location (EelEditableLabel  *label,
                     gint      *xp,
                     gint      *yp)
{
    GtkWidget *widget;
    gfloat xalign, yalign;
    GtkRequisition req;
    gint x, y, xpad, ypad;
    gint margin_start, margin_end, margin_top, margin_bottom;
    GtkAllocation allocation;

    widget = GTK_WIDGET (label);
    xalign = gtk_align_to_gfloat (gtk_widget_get_halign (widget));
    yalign = gtk_align_to_gfloat (gtk_widget_get_valign (widget));

    if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR)
        xalign = 1.0 - xalign;

    gtk_widget_get_preferred_size (widget, &req, NULL);
    margin_start = gtk_widget_get_margin_start (widget);
    margin_end = gtk_widget_get_margin_end (widget);
    margin_top = gtk_widget_get_margin_top (widget);
    margin_bottom = gtk_widget_get_margin_bottom (widget);

    xpad = margin_start + margin_end;
    ypad = margin_top + margin_bottom;

    gtk_widget_get_allocation (widget, &allocation);
    x = floor (0.5 + xpad
               + ((allocation.width - req.width) * xalign)
               + 0.5);

    y = floor (0.5 + ypad
               + ((allocation.height - req.height) * yalign)
               + 0.5);

    if (xp)
        *xp = x;

    if (yp)
        *yp = y;
}

static gint
eel_editable_label_get_cursor_pos (EelEditableLabel  *label,
                                   PangoRectangle *strong_pos,
                                   PangoRectangle *weak_pos)
{
    const gchar *text;
    const gchar *preedit_text;
    gint index;

    eel_editable_label_ensure_layout (label, TRUE);

    text = pango_layout_get_text (label->layout);
    preedit_text = text + label->selection_anchor;
    index = label->selection_anchor +
            g_utf8_offset_to_pointer (preedit_text, label->preedit_cursor) - preedit_text;

    pango_layout_get_cursor_pos (label->layout, index, strong_pos, weak_pos);

    return index;
}

/* Copied from gtkutil private function */
static gboolean
eel_editable_label_get_block_cursor_location (EelEditableLabel  *label,
        gint *index,
        PangoRectangle *pos,
        gboolean *at_line_end)
{
    const gchar *text;
    const gchar *preedit_text;
    PangoLayoutLine *layout_line;
    PangoRectangle strong_pos, weak_pos;
    gint line_no;
    gboolean rtl;
    PangoContext *context;
    PangoFontMetrics *metrics;
    const PangoFontDescription *font_desc;

    eel_editable_label_ensure_layout (label, TRUE);

    text = pango_layout_get_text (label->layout);
    preedit_text = text + label->selection_anchor;
    text = g_utf8_offset_to_pointer (preedit_text, label->preedit_cursor);
    index[0] = label->selection_anchor + text - preedit_text;

    pango_layout_index_to_pos (label->layout, index[0], pos);

    index[1] = label->selection_anchor + g_utf8_next_char (text) - preedit_text;

    if (pos->width != 0)
    {
        if (at_line_end)
            *at_line_end = FALSE;
        if (pos->width < 0) /* RTL char, shift x value back to top left of rect */
        {
            pos->x += pos->width;
            pos->width = -pos->width;
        }
        return TRUE;
    }

    pango_layout_index_to_line_x (label->layout, index[0], FALSE, &line_no, NULL);
    layout_line = pango_layout_get_line_readonly (label->layout, line_no);
    if (layout_line == NULL)
        return FALSE;

    text = pango_layout_get_text (label->layout);
    if (index[0] < layout_line->start_index + layout_line->length)
    {
        /* this may be a zero-width character in the middle of the line,
         * or it could be a character where line is wrapped, we do want
         * block cursor in latter case */
        if (g_utf8_next_char (text + index[0]) - text !=
                layout_line->start_index + layout_line->length)
        {
            /* zero-width character in the middle of the line, do not
             * bother with block cursor */
            return FALSE;
        }
    }

    /* Cursor is at the line end. It may be an empty line, or it could
     * be on the left or on the right depending on text direction, or it
     * even could be in the middle of visual layout in bidi text. */

    pango_layout_get_cursor_pos (label->layout, index[0], &strong_pos, &weak_pos);

    if (strong_pos.x != weak_pos.x)
    {
        /* do not show block cursor in this case, since the character typed
         * in may or may not appear at the cursor position */
        return FALSE;
    }

    context = pango_layout_get_context (label->layout);

    /* In case when index points to the end of line, pos->x is always most right
     * pixel of the layout line, so we need to correct it for RTL text. */
    if (layout_line->length)
    {
        if (layout_line->resolved_dir == PANGO_DIRECTION_RTL)
        {
            PangoLayoutIter *iter;
            PangoRectangle line_rect;
            gint i;
            gint left, right;
            const gchar *p;

            p = g_utf8_prev_char (text + index[0]);

            pango_layout_line_index_to_x (layout_line, p - text, FALSE, &left);
            pango_layout_line_index_to_x (layout_line, p - text, TRUE, &right);
            pos->x = MIN (left, right);

            iter = pango_layout_get_iter (label->layout);
            for (i = 0; i < line_no; i++)
                pango_layout_iter_next_line (iter);
            pango_layout_iter_get_line_extents (iter, NULL, &line_rect);
            pango_layout_iter_free (iter);

            rtl = TRUE;
            pos->x += line_rect.x;
        }
        else
            rtl = FALSE;
    }
    else
    {
        rtl = pango_context_get_base_dir (context) == PANGO_DIRECTION_RTL;
    }

    font_desc = pango_layout_get_font_description (label->layout);
    if (!font_desc)
        font_desc = pango_context_get_font_description (context);

    metrics = pango_context_get_metrics (context, font_desc, NULL);
    pos->width = pango_font_metrics_get_approximate_char_width (metrics);
    pango_font_metrics_unref (metrics);

    if (rtl)
        pos->x -= pos->width - 1;

    if (at_line_end)
        *at_line_end = TRUE;

    return pos->width != 0;
}


/* These functions are copies from gtk+, as they are not exported from gtk+ */

static void
eel_editable_label_draw_cursor (EelEditableLabel  *label, cairo_t *cr, gint xoffset, gint yoffset)
{
    if (gtk_widget_is_drawable (GTK_WIDGET (label)))
    {
        GtkWidget *widget = GTK_WIDGET (label);

        gboolean block;
        gboolean block_at_line_end;
        gint range[2];
        gint index;
        GtkStyleContext *context;
        PangoRectangle strong_pos;

        context = gtk_widget_get_style_context (widget);
        index = eel_editable_label_get_cursor_pos (label, NULL, NULL);

        if (label->overwrite_mode &&
                eel_editable_label_get_block_cursor_location (label, range,
                        &strong_pos,
                        &block_at_line_end))
            block = TRUE;
        else
            block = FALSE;

        if (!block)
        {
            gtk_render_insertion_cursor (context, cr,
                                         xoffset, yoffset,
                                         label->layout, index,
                                         gdk_keymap_get_direction (gdk_keymap_get_for_display (gtk_widget_get_display (widget))));
        }
        else /* Block cursor */
        {
            GdkRGBA fg_color;

            gtk_style_context_get_color (context, GTK_STATE_FLAG_NORMAL, &fg_color);

            cairo_save (cr);
            gdk_cairo_set_source_rgba (cr, &fg_color);
            cairo_rectangle (cr,
                             xoffset + PANGO_PIXELS (strong_pos.x),
                             yoffset + PANGO_PIXELS (strong_pos.y),
                             PANGO_PIXELS (strong_pos.width),
                             PANGO_PIXELS (strong_pos.height));
            cairo_fill (cr);

            if (!block_at_line_end)
            {
                GdkRGBA color;
                GdkRGBA *c;
                cairo_region_t *clip;

                clip = gdk_pango_layout_get_clip_region (label->layout,
							 xoffset, yoffset,
							 range, 1);

                gdk_cairo_region (cr, clip);
                cairo_clip (cr);

                gtk_style_context_get (context, GTK_STATE_FLAG_FOCUSED,
                                       GTK_STYLE_PROPERTY_BACKGROUND_COLOR,
                                       &c, NULL);
                color = *c;
                gdk_rgba_free (c);

                gdk_cairo_set_source_rgba (cr,
                                           &color);
                cairo_move_to (cr, xoffset, yoffset);
                pango_cairo_show_layout (cr, label->layout);

                cairo_region_destroy (clip);
            }

            cairo_restore (cr);
        }
    }
}


static gint
eel_editable_label_draw (GtkWidget *widget,
                         cairo_t   *cr)
{
    EelEditableLabel *label;
    GtkStyleContext *style;
    gint x, y;

    g_assert (EEL_IS_EDITABLE_LABEL (widget));

    label = EEL_EDITABLE_LABEL (widget);
    style = gtk_widget_get_style_context (widget);

    gtk_render_background (style, cr,
                           0, 0,
                           gtk_widget_get_allocated_width (widget),
                           gtk_widget_get_allocated_height (widget));

    eel_editable_label_ensure_layout (label, TRUE);

    if (gtk_widget_get_visible (widget) && gtk_widget_get_mapped (widget) &&
            label->text)
    {
        get_layout_location (label, &x, &y);

        gtk_render_layout (style,
                           cr,
                           x, y,
                           label->layout);

        if (label->selection_anchor != label->selection_end)
        {
            gint range[2];
            cairo_region_t *clip;
            GtkStateType state;

            GdkRGBA background_color;
            GdkRGBA *c;

            range[0] = label->selection_anchor;
            range[1] = label->selection_end;

            /* Handle possible preedit string */
            if (label->preedit_length > 0 &&
                range[1] > label->selection_anchor)
            {
                const char *text;

                text = pango_layout_get_text (label->layout) + label->selection_anchor;
                range[1] += g_utf8_offset_to_pointer (text, label->preedit_length) - text;
            }

            if (range[0] > range[1])
            {
                gint tmp = range[0];
                range[0] = range[1];
                range[1] = tmp;
            }

            clip = gdk_pango_layout_get_clip_region (label->layout,
                                                     x, y,
                                                     range,
                                                     1);

            cairo_save (cr);

            gdk_cairo_region (cr, clip);
            cairo_clip (cr);

            state = gtk_widget_get_state_flags (widget);
            state |= GTK_STATE_FLAG_SELECTED;

            gtk_style_context_get (style, state,
                                   GTK_STYLE_PROPERTY_BACKGROUND_COLOR,
                                   &c, NULL);
            background_color = *c;
            gdk_rgba_free (c);

            gdk_cairo_set_source_rgba (cr, &background_color);
            cairo_paint (cr);

            gtk_style_context_save (style);
            gtk_style_context_set_state (style, state);

            gtk_render_layout (style, cr,
                               x, y, label->layout);

            gtk_style_context_restore (style);

            cairo_restore (cr);

            cairo_region_destroy (clip);
        }
        else if (gtk_widget_has_focus (widget))
            eel_editable_label_draw_cursor (label, cr, x, y);

        if (label->draw_outline)
        {
            gtk_style_context_save (style);
            gtk_style_context_set_state (style, gtk_widget_get_state_flags (widget));

            gtk_render_frame (style, cr,
                              0, 0,
                              gtk_widget_get_allocated_width (widget),
                              gtk_widget_get_allocated_height (widget));

            gtk_style_context_restore (style);
        }
    }

    return FALSE;
}

static void
eel_editable_label_realize (GtkWidget *widget)
{
    EelEditableLabel *label;
    GdkDisplay *display;
    GdkWindowAttr attributes;
    gint attributes_mask;
    GtkAllocation allocation;
    GdkWindow *window;

    gtk_widget_set_realized (widget, TRUE);
    label = EEL_EDITABLE_LABEL (widget);
    gtk_widget_get_allocation (widget, &allocation);

    attributes.wclass = GDK_INPUT_OUTPUT;
    attributes.window_type = GDK_WINDOW_CHILD;
    attributes.x = allocation.x;
    attributes.y = allocation.y;
    attributes.width = allocation.width;
    attributes.height = allocation.height;
    attributes.visual = gtk_widget_get_visual (widget);
    display = gtk_widget_get_display (GTK_WIDGET (label));
    attributes.cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
    attributes.event_mask = gtk_widget_get_events (widget) |
                            (GDK_EXPOSURE_MASK |
                             GDK_BUTTON_PRESS_MASK |
                             GDK_BUTTON_RELEASE_MASK |
                             GDK_BUTTON1_MOTION_MASK |
                             GDK_BUTTON3_MOTION_MASK |
                             GDK_POINTER_MOTION_HINT_MASK |
                             GDK_POINTER_MOTION_MASK |
                             GDK_ENTER_NOTIFY_MASK |
                             GDK_LEAVE_NOTIFY_MASK);

    attributes_mask = GDK_WA_X | GDK_WA_Y  | GDK_WA_VISUAL | GDK_WA_CURSOR;

    window = gdk_window_new (gtk_widget_get_parent_window (widget),
                             &attributes, attributes_mask);
    gtk_widget_set_window (widget, window);
    gdk_window_set_user_data (window, widget);

    g_object_unref (attributes.cursor);

    gtk_im_context_set_client_window (label->im_context, gtk_widget_get_window (widget));
}

static void
eel_editable_label_unrealize (GtkWidget *widget)
{
    EelEditableLabel *label;

    label = EEL_EDITABLE_LABEL (widget);

    /* Strange. Copied from GtkEntry, should be NULL? */
    gtk_im_context_set_client_window (label->im_context, NULL);

    (* GTK_WIDGET_CLASS (eel_editable_label_parent_class)->unrealize) (widget);
}

static void
eel_editable_label_map (GtkWidget *widget)
{
    (* GTK_WIDGET_CLASS (eel_editable_label_parent_class)->map) (widget);
}

static void
eel_editable_label_unmap (GtkWidget *widget)
{
    (* GTK_WIDGET_CLASS (eel_editable_label_parent_class)->unmap) (widget);
}

static void
window_to_layout_coords (EelEditableLabel *label,
                         gint     *x,
                         gint     *y)
{
    gint lx, ly;

    /* get layout location in gtk_widget_get_window (widget) coords */
    get_layout_location (label, &lx, &ly);

    if (x)
        *x -= lx;                   /* go to layout */

    if (y)
        *y -= ly;                   /* go to layout */
}

static void
get_layout_index (EelEditableLabel *label,
                  gint      x,
                  gint      y,
                  gint     *index)
{
    gint trailing = 0;
    const gchar *cluster;
    const gchar *cluster_end;

    *index = 0;

    eel_editable_label_ensure_layout (label, TRUE);

    window_to_layout_coords (label, &x, &y);

    x *= PANGO_SCALE;
    y *= PANGO_SCALE;

    pango_layout_xy_to_index (label->layout,
                              x, y,
                              index, &trailing);

    if (*index >= label->selection_anchor && label->preedit_length)
    {
        if (*index >= label->selection_anchor + label->preedit_length)
            *index -= label->preedit_length;
        else
        {
            *index = label->selection_anchor;
            trailing = 0;
        }
    }

    cluster = label->text + *index;
    cluster_end = cluster;
    while (trailing)
    {
        cluster_end = g_utf8_next_char (cluster_end);
        --trailing;
    }

    *index += (cluster_end - cluster);
}

static void
eel_editable_label_select_word (EelEditableLabel *label)
{
    gint min, max;

    gint start_index = eel_editable_label_move_backward_word (label, label->selection_end);
    gint end_index = eel_editable_label_move_forward_word (label, label->selection_end);

    min = MIN (label->selection_anchor,
               label->selection_end);
    max = MAX (label->selection_anchor,
               label->selection_end);

    min = MIN (min, start_index);
    max = MAX (max, end_index);

    eel_editable_label_select_region_index (label, min, max);
}

static gint
eel_editable_label_button_press (GtkWidget      *widget,
                                 GdkEventButton *event)
{
    EelEditableLabel *label;
    gint index = 0;

    label = EEL_EDITABLE_LABEL (widget);

    if (event->button == 1)
    {
        if (!gtk_widget_has_focus (widget))
            gtk_widget_grab_focus (widget);

        if (event->type == GDK_3BUTTON_PRESS)
        {
            eel_editable_label_select_region_index (label, 0, strlen (label->text));
            return TRUE;
        }

        if (event->type == GDK_2BUTTON_PRESS)
        {
            eel_editable_label_select_word (label);
            return TRUE;
        }

        get_layout_index (label, event->x, event->y, &index);

        if ((label->selection_anchor !=
                label->selection_end) &&
                (event->state & GDK_SHIFT_MASK))
        {
            gint min, max;

            /* extend (same as motion) */
            min = MIN (label->selection_anchor,
                       label->selection_end);
            max = MAX (label->selection_anchor,
                       label->selection_end);

            min = MIN (min, index);
            max = MAX (max, index);

            /* ensure the anchor is opposite index */
            if (index == min)
            {
                gint tmp = min;
                min = max;
                max = tmp;
            }

            eel_editable_label_select_region_index (label, min, max);
        }
        else
        {
            if (event->type == GDK_3BUTTON_PRESS)
                eel_editable_label_select_region_index (label, 0, strlen (label->text));
            else if (event->type == GDK_2BUTTON_PRESS)
                eel_editable_label_select_word (label);
            else
                /* start a replacement */
                eel_editable_label_select_region_index (label, index, index);
        }

        return TRUE;
    }
    else if (event->button == 2 && event->type == GDK_BUTTON_PRESS)
    {
        get_layout_index (label, event->x, event->y, &index);

        eel_editable_label_select_region_index (label, index, index);
        eel_editable_label_paste (label, GDK_SELECTION_PRIMARY);

        return TRUE;
    }
    else if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
    {
        eel_editable_label_do_popup (label, event);

        return TRUE;

    }
    return FALSE;
}

static gint
eel_editable_label_button_release (GtkWidget      *widget,
                                   GdkEventButton *event)

{
    if (event->button != 1)
        return FALSE;

    /* The goal here is to return TRUE iff we ate the
     * button press to start selecting.
     */

    return TRUE;
}

static gint
eel_editable_label_motion (GtkWidget      *widget,
                           GdkEventMotion *event)
{
    EelEditableLabel *label;
    gint index;
    gint x, y;

    label = EEL_EDITABLE_LABEL (widget);

    if ((event->state & GDK_BUTTON1_MASK) == 0)
        return FALSE;

    gdk_window_get_device_position (gtk_widget_get_window (widget),
                                    event->device,
                                    &x, &y, NULL);

    get_layout_index (label, x, y, &index);

    eel_editable_label_select_region_index (label,
                                            label->selection_anchor,
                                            index);

    return TRUE;
}

static void
get_text_callback (GtkClipboard     *clipboard,
                   GtkSelectionData *selection_data,
                   guint             info,
                   gpointer          user_data_or_owner)
{
    EelEditableLabel *label;

    label = EEL_EDITABLE_LABEL (user_data_or_owner);

    if ((label->selection_anchor != label->selection_end) &&
            label->text)
    {
        gint start, end;
        gint len;

        start = MIN (label->selection_anchor,
                     label->selection_end);
        end = MAX (label->selection_anchor,
                   label->selection_end);

        len = strlen (label->text);

        if (end > len)
            end = len;

        if (start > len)
            start = len;

        gtk_selection_data_set_text (selection_data,
                                     label->text + start,
                                     end - start);
    }
}

static void
clear_text_callback (GtkClipboard     *clipboard,
                     gpointer          user_data_or_owner)
{
    EelEditableLabel *label;

    label = EEL_EDITABLE_LABEL (user_data_or_owner);

    label->selection_anchor = label->selection_end;

    gtk_widget_queue_draw (GTK_WIDGET (label));
}

static void
eel_editable_label_select_region_index (EelEditableLabel *label,
                                        gint      anchor_index,
                                        gint      end_index)
{
    GtkClipboard *clipboard;

    g_assert (EEL_IS_EDITABLE_LABEL (label));


    if (label->selection_anchor == anchor_index &&
            label->selection_end == end_index)
        return;

    eel_editable_label_reset_im_context (label);

    label->selection_anchor = anchor_index;
    label->selection_end = end_index;

    clipboard = gtk_clipboard_get (GDK_SELECTION_PRIMARY);

    if (anchor_index != end_index)
    {
        GtkTargetList *list;
        GtkTargetEntry *targets;
        gint n_targets;

        list = gtk_target_list_new (NULL, 0);
        gtk_target_list_add_text_targets (list, 0);
        targets = gtk_target_table_new_from_list (list, &n_targets);

        gtk_clipboard_set_with_owner (clipboard,
                                      targets, n_targets,
                                      get_text_callback,
                                      clear_text_callback,
                                      G_OBJECT (label));

        gtk_clipboard_set_can_store (clipboard, NULL, 0);
        gtk_target_table_free (targets, n_targets);
        gtk_target_list_unref (list);
    }
    else
    {
        if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (label))
            gtk_clipboard_clear (clipboard);
    }

    gtk_widget_queue_draw (GTK_WIDGET (label));

    g_object_freeze_notify (G_OBJECT (label));
    g_object_notify (G_OBJECT (label), "cursor_position");
    g_object_notify (G_OBJECT (label), "selection_bound");
    g_object_thaw_notify (G_OBJECT (label));
}

/**
 * eel_editable_label_select_region:
 * @label: a #EelEditableLabel
 * @start_offset: start offset (in characters not bytes)
 * @end_offset: end offset (in characters not bytes)
 *
 * Selects a range of characters in the label, if the label is selectable.
 * See eel_editable_label_set_selectable(). If the label is not selectable,
 * this function has no effect. If @start_offset or
 * @end_offset are -1, then the end of the label will be substituted.
 *
 **/
void
eel_editable_label_select_region  (EelEditableLabel *label,
                                   gint      start_offset,
                                   gint      end_offset)
{
    g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));

    if (label->text)
    {
        if (start_offset < 0)
            start_offset = g_utf8_strlen (label->text, -1);

        if (end_offset < 0)
            end_offset = g_utf8_strlen (label->text, -1);

        eel_editable_label_select_region_index (label,
                                                g_utf8_offset_to_pointer (label->text, start_offset) - label->text,
                                                g_utf8_offset_to_pointer (label->text, end_offset) - label->text);
    }
}

/**
 * eel_editable_label_get_selection_bounds:
 * @label: a #EelEditableLabel
 * @start: return location for start of selection, as a character offset
 * @end: return location for end of selection, as a character offset
 *
 * Gets the selected range of characters in the label, returning %TRUE
 * if there's a selection.
 *
 * Return value: %TRUE if selection is non-empty
 **/
gboolean
eel_editable_label_get_selection_bounds (EelEditableLabel  *label,
        gint      *start,
        gint      *end)
{
    gint start_index, end_index;
    gint start_offset, end_offset;
    gint len;

    g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), FALSE);


    start_index = MIN (label->selection_anchor,
                       label->selection_end);
    end_index = MAX (label->selection_anchor,
                     label->selection_end);

    len = strlen (label->text);

    if (end_index > len)
        end_index = len;

    if (start_index > len)
        start_index = len;

    start_offset = g_utf8_strlen (label->text, start_index);
    end_offset = g_utf8_strlen (label->text, end_index);

    if (start_offset > end_offset)
    {
        gint tmp = start_offset;
        start_offset = end_offset;
        end_offset = tmp;
    }

    if (start)
        *start = start_offset;

    if (end)
        *end = end_offset;

    return start_offset != end_offset;
}


/**
 * eel_editable_label_get_layout:
 * @label: a #EelEditableLabel
 *
 * Gets the #PangoLayout used to display the label.
 * The layout is useful to e.g. convert text positions to
 * pixel positions, in combination with eel_editable_label_get_layout_offsets().
 * The returned layout is owned by the label so need not be
 * freed by the caller.
 *
 * Return value: the #PangoLayout for this label
 **/
PangoLayout*
eel_editable_label_get_layout (EelEditableLabel *label)
{
    g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), NULL);

    eel_editable_label_ensure_layout (label, TRUE);

    return label->layout;
}

/**
 * eel_editable_label_get_layout_offsets:
 * @label: a #EelEditableLabel
 * @x: location to store X offset of layout, or %NULL
 * @y: location to store Y offset of layout, or %NULL
 *
 * Obtains the coordinates where the label will draw the #PangoLayout
 * representing the text in the label; useful to convert mouse events
 * into coordinates inside the #PangoLayout, e.g. to take some action
 * if some part of the label is clicked. Of course you will need to
 * create a #GtkEventBox to receive the events, and pack the label
 * inside it, since labels are a #GTK_NO_WINDOW widget. Remember
 * when using the #PangoLayout functions you need to convert to
 * and from pixels using PANGO_PIXELS() or #PANGO_SCALE.
 *
 **/
void
eel_editable_label_get_layout_offsets (EelEditableLabel *label,
                                       gint     *x,
                                       gint     *y)
{
    g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));

    get_layout_location (label, x, y);
}

static void
eel_editable_label_pend_cursor_blink (EelEditableLabel *label)
{
    /* TODO */
}

static void
eel_editable_label_check_cursor_blink (EelEditableLabel *label)
{
    /* TODO */
}

static gint
eel_editable_label_key_press (GtkWidget   *widget,
                              GdkEventKey *event)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (widget);

    eel_editable_label_pend_cursor_blink (label);

    if (gtk_im_context_filter_keypress (label->im_context, event))
    {
        /*TODO eel_editable_label_obscure_mouse_cursor (label);*/
        label->need_im_reset = TRUE;
        return TRUE;
    }

    if (GTK_WIDGET_CLASS (eel_editable_label_parent_class)->key_press_event (widget, event))
        /* Activate key bindings
         */
        return TRUE;

    return FALSE;
}

static gint
eel_editable_label_key_release (GtkWidget   *widget,
                                GdkEventKey *event)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (widget);

    if (gtk_im_context_filter_keypress (label->im_context, event))
    {
        label->need_im_reset = TRUE;
        return TRUE;
    }

    return GTK_WIDGET_CLASS (eel_editable_label_parent_class)->key_release_event (widget, event);
}

static void
eel_editable_label_keymap_direction_changed (GdkKeymap *keymap,
        EelEditableLabel  *label)
{
    gtk_widget_queue_draw (GTK_WIDGET (label));
}

static gint
eel_editable_label_focus_in (GtkWidget     *widget,
                             GdkEventFocus *event)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (widget);

    gtk_widget_queue_draw (widget);

    label->need_im_reset = TRUE;
    gtk_im_context_focus_in (label->im_context);

    g_signal_connect (gdk_keymap_get_for_display (gtk_widget_get_display (widget)),
                      "direction_changed",
                      G_CALLBACK (eel_editable_label_keymap_direction_changed), label);

    eel_editable_label_check_cursor_blink (label);

    return FALSE;
}

static gint
eel_editable_label_focus_out (GtkWidget     *widget,
                              GdkEventFocus *event)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (widget);

    gtk_widget_queue_draw (widget);

    label->need_im_reset = TRUE;
    gtk_im_context_focus_out (label->im_context);

    eel_editable_label_check_cursor_blink (label);

    g_signal_handlers_disconnect_by_func (gdk_keymap_get_for_display (gtk_widget_get_display (widget)),
                                          (gpointer) eel_editable_label_keymap_direction_changed,
                                          label);

    return FALSE;
}

static void
eel_editable_label_delete_text (EelEditableLabel *label,
                                int start_pos,
                                int end_pos)
{
    if (start_pos < 0)
        start_pos = 0;
    if (end_pos < 0 || end_pos > label->n_bytes)
        end_pos = label->n_bytes;

    if (start_pos < end_pos)
    {
        int anchor, end;

        memmove (label->text + start_pos, label->text + end_pos, label->n_bytes + 1 - end_pos);
        label->n_bytes -= (end_pos - start_pos);

        anchor = label->selection_anchor;
        if (anchor > start_pos)
            anchor -= MIN (anchor, end_pos) - start_pos;

        end = label->selection_end;
        if (end > start_pos)
            end -= MIN (end, end_pos) - start_pos;

        /* We might have changed the selection */
        eel_editable_label_select_region_index (label, anchor, end);

        eel_editable_label_recompute (label);
        gtk_widget_queue_resize (GTK_WIDGET (label));

        g_object_notify (G_OBJECT (label), "text");
        g_signal_emit_by_name (GTK_EDITABLE (label), "changed");
    }
}

static void
eel_editable_label_insert_text (EelEditableLabel *label,
                                const gchar *new_text,
                                gint         new_text_length,
                                gint        *index)
{
    if (new_text_length + label->n_bytes + 1 > label->text_size)
    {
        while (new_text_length + label->n_bytes + 1 > label->text_size)
        {
            if (label->text_size == 0)
                label->text_size = 16;
            else
                label->text_size *= 2;
        }

        label->text = g_realloc (label->text, label->text_size);
    }

    g_object_freeze_notify (G_OBJECT (label));

    memmove (label->text + *index + new_text_length, label->text + *index, label->n_bytes - *index);
    memmove (label->text + *index, new_text, new_text_length);

    label->n_bytes += new_text_length;

    /* NUL terminate for safety and convenience */
    label->text[label->n_bytes] = '\0';

    g_object_notify (G_OBJECT (label), "text");

    if (label->selection_anchor > *index)
    {
        g_object_notify (G_OBJECT (label), "cursor_position");
        g_object_notify (G_OBJECT (label), "selection_bound");
        label->selection_anchor += new_text_length;
    }

    if (label->selection_end > *index)
    {
        label->selection_end += new_text_length;
        g_object_notify (G_OBJECT (label), "selection_bound");
    }

    *index += new_text_length;

    eel_editable_label_recompute (label);
    gtk_widget_queue_resize (GTK_WIDGET (label));

    g_object_thaw_notify (G_OBJECT (label));
    g_signal_emit_by_name (GTK_EDITABLE (label), "changed");
}

/* Used for im_commit_cb and inserting Unicode chars */
static void
eel_editable_label_enter_text (EelEditableLabel *label,
                               const gchar    *str)
{
    GtkEditable *editable = GTK_EDITABLE (label);
    gint tmp_pos;
    gboolean old_need_im_reset;

    /* Never reset the im while commiting, as that resets possible im state */
    old_need_im_reset = label->need_im_reset;
    label->need_im_reset = FALSE;

    if (label->selection_end != label->selection_anchor)
        gtk_editable_delete_selection (editable);
    else
    {
        if (label->overwrite_mode)
            eel_editable_label_delete_from_cursor (label, GTK_DELETE_CHARS, 1);
    }

    tmp_pos = g_utf8_pointer_to_offset (label->text,
                                        label->text + label->selection_anchor);
    gtk_editable_insert_text (GTK_EDITABLE (label), str, strlen (str), &tmp_pos);
    tmp_pos = g_utf8_offset_to_pointer (label->text, tmp_pos) - label->text;
    eel_editable_label_select_region_index (label, tmp_pos, tmp_pos);

    label->need_im_reset = old_need_im_reset;
}

/* IM Context Callbacks
 */

static void
eel_editable_label_commit_cb (GtkIMContext *context,
                              const gchar  *str,
                              EelEditableLabel  *label)
{
    eel_editable_label_enter_text (label, str);
}

static void
eel_editable_label_preedit_changed_cb (GtkIMContext *context,
                                       EelEditableLabel  *label)
{
    gchar *preedit_string;
    gint cursor_pos;

    gtk_im_context_get_preedit_string (label->im_context,
                                       &preedit_string, NULL,
                                       &cursor_pos);
    label->preedit_length = strlen (preedit_string);
    cursor_pos = CLAMP (cursor_pos, 0, g_utf8_strlen (preedit_string, -1));
    label->preedit_cursor = cursor_pos;
    g_free (preedit_string);

    eel_editable_label_recompute (label);
    gtk_widget_queue_resize (GTK_WIDGET (label));
}

static gboolean
eel_editable_label_retrieve_surrounding_cb (GtkIMContext *context,
        EelEditableLabel  *label)
{
    gtk_im_context_set_surrounding (context,
                                    label->text,
                                    strlen (label->text) + 1,
                                    label->selection_end);

    return TRUE;
}

static gboolean
eel_editable_label_delete_surrounding_cb (GtkIMContext *slave,
        gint          offset,
        gint          n_chars,
        EelEditableLabel  *label)
{
    gint current_pos;

    current_pos = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor);
    gtk_editable_delete_text (GTK_EDITABLE (label),
                              current_pos + offset,
                              current_pos + offset + n_chars);

    return TRUE;
}

static gboolean
eel_editable_label_focus (GtkWidget         *widget,
                          GtkDirectionType   direction)
{
    /* We never want to be in the tab chain */
    return FALSE;
}

/* Compute the X position for an offset that corresponds to the "more important
 * cursor position for that offset. We use this when trying to guess to which
 * end of the selection we should go to when the user hits the left or
 * right arrow key.
 */
static void
get_better_cursor (EelEditableLabel *label,
                   gint      index,
                   gint      *x,
                   gint      *y)
{
    GtkTextDirection keymap_direction =
        (gdk_keymap_get_direction (gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)))) == PANGO_DIRECTION_LTR) ?
        GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
    GtkTextDirection widget_direction = gtk_widget_get_direction (GTK_WIDGET (label));
    gboolean split_cursor;
    PangoRectangle strong_pos, weak_pos;

    g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
                  "gtk-split-cursor", &split_cursor,
                  NULL);

    eel_editable_label_get_cursor_pos (label, &strong_pos, &weak_pos);

    if (split_cursor)
    {
        *x = strong_pos.x / PANGO_SCALE;
        *y = strong_pos.y / PANGO_SCALE;
    }
    else
    {
        if (keymap_direction == widget_direction)
        {
            *x = strong_pos.x / PANGO_SCALE;
            *y = strong_pos.y / PANGO_SCALE;
        }
        else
        {
            *x = weak_pos.x / PANGO_SCALE;
            *y = weak_pos.y / PANGO_SCALE;
        }
    }
}


static gint
eel_editable_label_move_logically (EelEditableLabel *label,
                                   gint      start,
                                   gint      count)
{
    gint offset = g_utf8_pointer_to_offset (label->text,
                                            label->text + start);

    if (label->text)
    {
        PangoLogAttr *log_attrs;
        gint n_attrs;
        gint length;

        eel_editable_label_ensure_layout (label, FALSE);

        length = g_utf8_strlen (label->text, -1);

        pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs);

        while (count > 0 && offset < length)
        {
            do
                offset++;
            while (offset < length && !log_attrs[offset].is_cursor_position);

            count--;
        }
        while (count < 0 && offset > 0)
        {
            do
                offset--;
            while (offset > 0 && !log_attrs[offset].is_cursor_position);

            count++;
        }

        g_free (log_attrs);
    }

    return g_utf8_offset_to_pointer (label->text, offset) - label->text;
}

static gint
eel_editable_label_move_visually (EelEditableLabel *label,
                                  gint      start,
                                  gint      count)
{
    gint index;

    index = start;

    while (count != 0)
    {
        int new_index, new_trailing;
        gboolean split_cursor;
        gboolean strong;

        eel_editable_label_ensure_layout (label, FALSE);

        g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
                      "gtk-split-cursor", &split_cursor,
                      NULL);

        if (split_cursor)
            strong = TRUE;
        else
        {
            GtkTextDirection keymap_direction =
                (gdk_keymap_get_direction (gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)))) == PANGO_DIRECTION_LTR) ?
                GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;

            strong = keymap_direction == gtk_widget_get_direction (GTK_WIDGET (label));
        }

        if (count > 0)
        {
            pango_layout_move_cursor_visually (label->layout, strong, index, 0, 1, &new_index, &new_trailing);
            count--;
        }
        else
        {
            pango_layout_move_cursor_visually (label->layout, strong, index, 0, -1, &new_index, &new_trailing);
            count++;
        }

        if (new_index < 0 || new_index == G_MAXINT)
            break;

        index = new_index;

        while (new_trailing--)
            index = g_utf8_next_char (label->text + new_index) - label->text;
    }

    return index;
}

static gint
eel_editable_label_move_line (EelEditableLabel *label,
                              gint      start,
                              gint      count)
{
    PangoLayoutLine *line;
    int index;
    int n_lines, i;
    int x = 0;

    eel_editable_label_ensure_layout (label, FALSE);

    n_lines = pango_layout_get_line_count (label->layout);

    for (i = 0; i < n_lines; i++)
    {
        line = pango_layout_get_line (label->layout, i);
        if (start >= line->start_index &&
                start <= line->start_index + line->length)
        {
            pango_layout_line_index_to_x (line, start, FALSE, &x);
            break;
        }
    }
    if (i == n_lines)
        i = n_lines - 1;

    i += count;
    i = CLAMP (i, 0, n_lines - 1);

    line = pango_layout_get_line (label->layout, i);
    if (pango_layout_line_x_to_index (line,
                                      x,
                                      &index, NULL))
        return index;
    else
    {
        if (i == n_lines - 1)
            return line->start_index + line->length;
        else
            return line->start_index + line->length - 1;
    }
}

static gint
eel_editable_label_move_forward_word (EelEditableLabel *label,
                                      gint      start)
{
    gint new_pos = g_utf8_pointer_to_offset (label->text,
                   label->text + start);
    gint length;

    length = g_utf8_strlen (label->text, -1);
    if (new_pos < length)
    {
        PangoLogAttr *log_attrs;
        gint n_attrs;

        eel_editable_label_ensure_layout (label, FALSE);

        pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs);

        /* Find the next word end,
        (remember, n_attrs is one more than the number of of chars) */
        new_pos++;
        while (new_pos < (n_attrs - 1) && !log_attrs[new_pos].is_word_end)
            new_pos++;

        g_free (log_attrs);
    }

    return g_utf8_offset_to_pointer (label->text, new_pos) - label->text;
}


static gint
eel_editable_label_move_backward_word (EelEditableLabel *label,
                                       gint      start)
{
    gint new_pos = g_utf8_pointer_to_offset (label->text,
                   label->text + start);

    if (new_pos > 0)
    {
        PangoLogAttr *log_attrs;
        gint n_attrs;

        eel_editable_label_ensure_layout (label, FALSE);

        pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs);

        new_pos -= 1;

        /* Find the previous word beginning */
        while (new_pos > 0 && !log_attrs[new_pos].is_word_start)
            new_pos--;

        g_free (log_attrs);
    }

    return g_utf8_offset_to_pointer (label->text, new_pos) - label->text;
}

static void
eel_editable_label_move_cursor (EelEditableLabel    *label,
                                GtkMovementStep      step,
                                gint                 count,
                                gboolean             extend_selection)
{
    gint new_pos;

    new_pos = label->selection_end;

    if (label->selection_end != label->selection_anchor &&
            !extend_selection)
    {
        /* If we have a current selection and aren't extending it, move to the
         * start/or end of the selection as appropriate
         */
        switch (step)
        {
        case GTK_MOVEMENT_DISPLAY_LINES:
        case GTK_MOVEMENT_VISUAL_POSITIONS:
        {
            gint end_x, end_y;
            gint anchor_x, anchor_y;
            gboolean end_is_left;

            get_better_cursor (label, label->selection_end, &end_x, &end_y);
            get_better_cursor (label, label->selection_anchor, &anchor_x, &anchor_y);

            end_is_left = (end_y < anchor_y) || (end_y == anchor_y && end_x < anchor_x);

            if (count < 0)
                new_pos = end_is_left ? label->selection_end : label->selection_anchor;
            else
                new_pos = !end_is_left ? label->selection_end : label->selection_anchor;

            break;
        }
        case GTK_MOVEMENT_LOGICAL_POSITIONS:
        case GTK_MOVEMENT_WORDS:
            if (count < 0)
                new_pos = MIN (label->selection_end, label->selection_anchor);
            else
                new_pos = MAX (label->selection_end, label->selection_anchor);
            break;
        case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
        case GTK_MOVEMENT_PARAGRAPH_ENDS:
        case GTK_MOVEMENT_BUFFER_ENDS:
            /* FIXME: Can do better here */
            new_pos = count < 0 ? 0 : strlen (label->text);
            break;
        case GTK_MOVEMENT_PARAGRAPHS:
        case GTK_MOVEMENT_PAGES:
            break;
        default:
            g_assert_not_reached ();
            break;
        }
    }
    else
    {
        switch (step)
        {
        case GTK_MOVEMENT_LOGICAL_POSITIONS:
            new_pos = eel_editable_label_move_logically (label, new_pos, count);
            break;
        case GTK_MOVEMENT_VISUAL_POSITIONS:
            new_pos = eel_editable_label_move_visually (label, new_pos, count);
            break;
        case GTK_MOVEMENT_WORDS:
            while (count > 0)
            {
                new_pos = eel_editable_label_move_forward_word (label, new_pos);
                count--;
            }
            while (count < 0)
            {
                new_pos = eel_editable_label_move_backward_word (label, new_pos);
                count++;
            }
            break;
        case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
        case GTK_MOVEMENT_PARAGRAPH_ENDS:
        case GTK_MOVEMENT_BUFFER_ENDS:
            /* FIXME: Can do better here */
            new_pos = count < 0 ? 0 : strlen (label->text);
            break;
        case GTK_MOVEMENT_DISPLAY_LINES:
            new_pos = eel_editable_label_move_line (label, new_pos, count);
            break;
            break;
        case GTK_MOVEMENT_PARAGRAPHS:
        case GTK_MOVEMENT_PAGES:
            break;
        default:
            g_assert_not_reached ();
            break;
        }
    }

    if (extend_selection)
        eel_editable_label_select_region_index (label,
                                                label->selection_anchor,
                                                new_pos);
    else
        eel_editable_label_select_region_index (label, new_pos, new_pos);
}

static void
eel_editable_label_reset_im_context (EelEditableLabel  *label)
{
    if (label->need_im_reset)
    {
        label->need_im_reset = 0;
        gtk_im_context_reset (label->im_context);
    }
}


static void
eel_editable_label_delete_from_cursor (EelEditableLabel *label,
                                       GtkDeleteType     type,
                                       gint              count)
{
    GtkEditable *editable = GTK_EDITABLE (label);
    gint start_pos = label->selection_anchor;
    gint end_pos = label->selection_anchor;

    eel_editable_label_reset_im_context (label);

    if (label->selection_anchor != label->selection_end)
    {
        gtk_editable_delete_selection (editable);
        return;
    }

    switch (type)
    {
    case GTK_DELETE_CHARS:
        end_pos = eel_editable_label_move_logically (label, start_pos, count);
        start_pos = g_utf8_pointer_to_offset (label->text, label->text + start_pos);
        end_pos = g_utf8_pointer_to_offset (label->text, label->text + end_pos);
        gtk_editable_delete_text (GTK_EDITABLE (label), MIN (start_pos, end_pos), MAX (start_pos, end_pos));
        break;
    case GTK_DELETE_WORDS:
        if (count < 0)
        {
            /* Move to end of current word, or if not on a word, end of previous word */
            end_pos = eel_editable_label_move_backward_word (label, end_pos);
            end_pos = eel_editable_label_move_forward_word (label, end_pos);
        }
        else if (count > 0)
        {
            /* Move to beginning of current word, or if not on a word, begining of next word */
            start_pos = eel_editable_label_move_forward_word (label, start_pos);
            start_pos = eel_editable_label_move_backward_word (label, start_pos);
        }

        /* Fall through */
    case GTK_DELETE_WORD_ENDS:
        while (count < 0)
        {
            start_pos = eel_editable_label_move_backward_word (label, start_pos);
            count++;
        }
        while (count > 0)
        {
            end_pos = eel_editable_label_move_forward_word (label, end_pos);
            count--;
        }
        start_pos = g_utf8_pointer_to_offset (label->text, label->text + start_pos);
        end_pos = g_utf8_pointer_to_offset (label->text, label->text + end_pos);

        gtk_editable_delete_text (GTK_EDITABLE (label), start_pos, end_pos);
        break;
    case GTK_DELETE_DISPLAY_LINE_ENDS:
    case GTK_DELETE_PARAGRAPH_ENDS:
        end_pos = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor);
        if (count < 0)
            gtk_editable_delete_text (GTK_EDITABLE (label), 0, end_pos);
        else
            gtk_editable_delete_text (GTK_EDITABLE (label), end_pos, -1);
        break;
    case GTK_DELETE_DISPLAY_LINES:
    case GTK_DELETE_PARAGRAPHS:
        gtk_editable_delete_text (GTK_EDITABLE (label), 0, -1);
        break;
    case GTK_DELETE_WHITESPACE:
        /* TODO eel_editable_label_delete_whitespace (label); */
        break;
    }

    eel_editable_label_pend_cursor_blink (label);
}


static void
eel_editable_label_copy_clipboard (EelEditableLabel *label)
{
    if (label->text)
    {
        gint start, end;
        gint len;

        start = MIN (label->selection_anchor,
                     label->selection_end);
        end = MAX (label->selection_anchor,
                   label->selection_end);

        len = strlen (label->text);

        if (end > len)
            end = len;

        if (start > len)
            start = len;

        if (start != end)
            gtk_clipboard_set_text (gtk_clipboard_get (GDK_SELECTION_CLIPBOARD),
                                    label->text + start, end - start);
    }
}

static void
eel_editable_label_cut_clipboard (EelEditableLabel *label)
{
    if (label->text)
    {
        gint start, end;
        gint len;

        start = MIN (label->selection_anchor,
                     label->selection_end);
        end = MAX (label->selection_anchor,
                   label->selection_end);

        len = strlen (label->text);

        if (end > len)
            end = len;

        if (start > len)
            start = len;

        if (start != end)
        {
            gtk_clipboard_set_text (gtk_clipboard_get (GDK_SELECTION_CLIPBOARD),
                                    label->text + start, end - start);
            start = g_utf8_pointer_to_offset (label->text, label->text + start);
            end = g_utf8_pointer_to_offset (label->text, label->text + end);
            gtk_editable_delete_text (GTK_EDITABLE (label), start, end);
        }
    }
}

static void
paste_received (GtkClipboard *clipboard,
                const gchar  *text,
                gpointer      data)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (data);
    GtkEditable *editable = GTK_EDITABLE (label);
    gint tmp_pos;

    if (text)
    {
        if (label->selection_end != label->selection_anchor)
            gtk_editable_delete_selection (editable);

        tmp_pos = g_utf8_pointer_to_offset (label->text,
                                            label->text + label->selection_anchor);
        gtk_editable_insert_text (GTK_EDITABLE (label), text, strlen (text), &tmp_pos);
        tmp_pos = g_utf8_offset_to_pointer (label->text, tmp_pos) - label->text;
        eel_editable_label_select_region_index (label, tmp_pos, tmp_pos);
    }

    g_object_unref (G_OBJECT (label));
}

static void
eel_editable_label_paste (EelEditableLabel *label,
                          GdkAtom   selection)
{
    g_object_ref (G_OBJECT (label));
    gtk_clipboard_request_text (gtk_widget_get_clipboard (GTK_WIDGET (label), selection),
                                paste_received, label);
}

static void
eel_editable_label_paste_clipboard (EelEditableLabel *label)
{
    eel_editable_label_paste (label, GDK_NONE);
}

static void
eel_editable_label_select_all (EelEditableLabel *label)
{
    eel_editable_label_select_region_index (label, 0, strlen (label->text));
}

/* Quick hack of a popup menu
 */
static void
activate_cb (GtkWidget *menuitem,
             EelEditableLabel  *label)
{
    const gchar *signal = g_object_get_data (G_OBJECT (menuitem), "gtk-signal");
    g_signal_emit_by_name (label, signal);
}

static void
append_action_signal (EelEditableLabel     *label,
                      GtkWidget    *menu,
                      const gchar  *icon_name,
                      const gchar  *label_name,
                      const gchar  *signal,
                      gboolean      sensitive)
{
    GtkWidget *menuitem = eel_image_menu_item_new_from_icon (icon_name, label_name);

    g_object_set_data (G_OBJECT (menuitem), "gtk-signal", (char *)signal);
    g_signal_connect (menuitem, "activate",
                      G_CALLBACK (activate_cb), label);

    gtk_widget_set_sensitive (menuitem, sensitive);

    gtk_widget_show (menuitem);
    gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
}

static void
popup_menu_detach (GtkWidget *attach_widget,
                   GtkMenu   *menu)
{
    EelEditableLabel *label;
    label = EEL_EDITABLE_LABEL (attach_widget);

    label->popup_menu = NULL;
}

static void
eel_editable_label_toggle_overwrite (EelEditableLabel *label)
{
    label->overwrite_mode = !label->overwrite_mode;
    gtk_widget_queue_draw (GTK_WIDGET (label));
}

typedef struct
{
    EelEditableLabel *label;
    gint button;
    guint time;
} PopupInfo;

static void
popup_targets_received (GtkClipboard     *clipboard,
                        GtkSelectionData *data,
                        gpointer          user_data)
{
    gboolean have_selection;
    gboolean clipboard_contains_text;
    PopupInfo *info;
    EelEditableLabel *label;

    info = user_data;
    label = info->label;

    if (gtk_widget_get_realized (GTK_WIDGET (label)))
    {
        GtkWidget *menuitem;

        if (label->popup_menu)
            gtk_widget_destroy (label->popup_menu);

        label->popup_menu = gtk_menu_new ();

        gtk_menu_set_reserve_toggle_size (GTK_MENU (label->popup_menu), FALSE);

        gtk_menu_attach_to_widget (GTK_MENU (label->popup_menu),
                                   GTK_WIDGET (label),
                                   popup_menu_detach);

        have_selection =
            label->selection_anchor != label->selection_end;

        clipboard_contains_text = gtk_selection_data_targets_include_text (data);

        append_action_signal (label, label->popup_menu, "edit-cut", _("Cu_t"), "cut_clipboard",
                              have_selection);
        append_action_signal (label, label->popup_menu, "edit-copy", _("_Copy"), "copy_clipboard",
                              have_selection);
        append_action_signal (label, label->popup_menu, "edit-paste", _("_Paste"), "paste_clipboard",
                              clipboard_contains_text);

        menuitem = eel_image_menu_item_new_from_icon ("edit-select-all", _("Select All"));
        g_signal_connect_object (menuitem, "activate",
                                 G_CALLBACK (eel_editable_label_select_all), label,
                                 G_CONNECT_SWAPPED);
        gtk_widget_show (menuitem);
        gtk_menu_shell_append (GTK_MENU_SHELL (label->popup_menu), menuitem);

        g_signal_emit (label,
                       signals[POPULATE_POPUP], 0,
                       label->popup_menu);

        if (info->button)
            gtk_menu_popup_at_pointer (GTK_MENU (label->popup_menu), NULL);
        else
        {
            gtk_menu_popup_at_pointer (GTK_MENU (label->popup_menu), NULL);
            gtk_menu_shell_select_first (GTK_MENU_SHELL (label->popup_menu), FALSE);
        }
    }

    g_object_unref (label);
    g_free (info);
}

static void
eel_editable_label_do_popup (EelEditableLabel *label,
                             GdkEventButton   *event)
{
    PopupInfo *info = g_new (PopupInfo, 1);

    /* In order to know what entries we should make sensitive, we
     * ask for the current targets of the clipboard, and when
     * we get them, then we actually pop up the menu.
     */
    info->label = g_object_ref (label);

    if (event)
    {
        info->button = event->button;
        info->time = event->time;
    }
    else
    {
        info->button = 0;
        info->time = gtk_get_current_event_time ();
    }

    gtk_clipboard_request_contents (gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD),
                                    gdk_atom_intern ("TARGETS", FALSE),
                                    popup_targets_received,
                                    info);
}

/************ Editable implementation ****************/

static void
editable_insert_text_emit  (GtkEditable *editable,
                            const gchar *new_text,
                            gint         new_text_length,
                            gint        *position)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);
    gchar buf[64];
    gchar *text;
    int text_length;

    text_length = g_utf8_strlen (label->text, -1);

    if (*position < 0 || *position > text_length)
        *position = text_length;

    g_object_ref (G_OBJECT (editable));

    if (new_text_length <= 63)
        text = buf;
    else
        text = g_new (gchar, new_text_length + 1);

    text[new_text_length] = '\0';
    strncpy (text, new_text, new_text_length);

    g_signal_emit_by_name (editable, "insert_text", text, new_text_length, position);

    if (new_text_length > 63)
        g_free (text);

    g_object_unref (G_OBJECT (editable));
}

static void
editable_delete_text_emit (GtkEditable *editable,
                           gint         start_pos,
                           gint         end_pos)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);
    int text_length;

    text_length = g_utf8_strlen (label->text, -1);

    if (end_pos < 0 || end_pos > text_length)
        end_pos = text_length;
    if (start_pos < 0)
        start_pos = 0;
    if (start_pos > end_pos)
        start_pos = end_pos;

    g_object_ref (G_OBJECT (editable));

    g_signal_emit_by_name (editable, "delete_text", start_pos, end_pos);

    g_object_unref (G_OBJECT (editable));
}

static void
editable_insert_text (GtkEditable *editable,
                      const gchar *new_text,
                      gint         new_text_length,
                      gint        *position)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);
    gint index;

    if (new_text_length < 0)
        new_text_length = strlen (new_text);

    index = g_utf8_offset_to_pointer (label->text, *position) - label->text;

    eel_editable_label_insert_text (label,
                                    new_text,
                                    new_text_length,
                                    &index);

    *position = g_utf8_pointer_to_offset (label->text, label->text + index);
}

static void
editable_delete_text (GtkEditable *editable,
                      gint         start_pos,
                      gint         end_pos)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);
    int text_length;
    gint start_index, end_index;

    text_length = g_utf8_strlen (label->text, -1);

    if (end_pos < 0 || end_pos > text_length)
        end_pos = text_length;
    if (start_pos < 0)
        start_pos = 0;
    if (start_pos > end_pos)
        start_pos = end_pos;

    start_index = g_utf8_offset_to_pointer (label->text, start_pos) - label->text;
    end_index = g_utf8_offset_to_pointer (label->text, end_pos) - label->text;

    eel_editable_label_delete_text (label, start_index, end_index);
}

static gchar *
editable_get_chars (GtkEditable   *editable,
                    gint           start_pos,
                    gint           end_pos)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);
    int text_length;
    gint start_index, end_index;

    text_length = g_utf8_strlen (label->text, -1);

    if (end_pos < 0 || end_pos > text_length)
        end_pos = text_length;
    if (start_pos < 0)
        start_pos = 0;
    if (start_pos > end_pos)
        start_pos = end_pos;

    start_index = g_utf8_offset_to_pointer (label->text, start_pos) - label->text;
    end_index = g_utf8_offset_to_pointer (label->text, end_pos) - label->text;

    return g_strndup (label->text + start_index, end_index - start_index);
}

static void
editable_set_selection_bounds (GtkEditable *editable,
                               gint         start,
                               gint         end)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);
    int text_length;
    gint start_index, end_index;

    text_length = g_utf8_strlen (label->text, -1);

    if (end < 0 || end > text_length)
        end = text_length;
    if (start < 0)
        start = text_length;
    if (start > text_length)
        start = text_length;

    eel_editable_label_reset_im_context (label);

    start_index = g_utf8_offset_to_pointer (label->text, start) - label->text;
    end_index = g_utf8_offset_to_pointer (label->text, end) - label->text;

    eel_editable_label_select_region_index (label, start_index, end_index);
}

static gboolean
editable_get_selection_bounds (GtkEditable *editable,
                               gint        *start,
                               gint        *end)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);

    *start = g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor);
    *end = g_utf8_pointer_to_offset (label->text, label->text + label->selection_end);

    return (label->selection_anchor != label->selection_end);
}

static void
editable_real_set_position (GtkEditable *editable,
                            gint         position)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);
    int text_length;
    int index;

    text_length = g_utf8_strlen (label->text, -1);

    if (position < 0 || position > text_length)
        position = text_length;

    index = g_utf8_offset_to_pointer (label->text, position) - label->text;

    if (index != label->selection_anchor ||
            index != label->selection_end)
    {
        eel_editable_label_select_region_index (label, index, index);
    }
}

static gint
editable_get_position (GtkEditable *editable)
{
    EelEditableLabel *label = EEL_EDITABLE_LABEL (editable);

    return g_utf8_pointer_to_offset (label->text, label->text + label->selection_anchor);
}


static AtkObjectClass *a11y_parent_class = NULL;

static const char* eel_editable_label_accessible_data = "eel-editable-label-accessible-data";

/************ Accessible implementation ****************/

typedef struct
{
    GailTextUtil *textutil;
    gint         selection_anchor;
    gint         selection_end;
    gchar        *signal_name;
    gint         position;
    gint         length;
} EelEditableLabelAccessiblePrivate;

typedef struct
{
    EelEditableLabel* label;
    gint position;
} EelEditableLabelAccessiblePaste;

typedef struct _EelEditableLabelAccessible EelEditableLabelAccessible;
typedef struct _EelEditableLabelAccessibleClass EelEditableLabelAccessibleClass;

struct _EelEditableLabelAccessible
{
    GtkWidgetAccessible parent;
};

struct _EelEditableLabelAccessibleClass
{
    GtkWidgetAccessibleClass parent_class;
};

static gchar*
eel_editable_label_accessible_get_text (AtkText *text,
                                        gint    start_pos,
                                        gint    end_pos)
{
    GtkWidget *widget;
    EelEditableLabelAccessiblePrivate *priv;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return NULL;

    priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data);
    return gail_text_util_get_substring (priv->textutil, start_pos, end_pos);
}

static gunichar
eel_editable_label_accessible_get_character_at_offset (AtkText *text,
        gint     offset)
{
    GtkWidget *widget;
    EelEditableLabelAccessiblePrivate *priv;
    gchar *string;
    gunichar unichar;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return '\0';

    priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data);
    string = gail_text_util_get_substring (priv->textutil, 0, -1);
    if (offset >= g_utf8_strlen (string, -1))
    {
        unichar = '\0';
    }
    else
    {
        gchar *index;

        index = g_utf8_offset_to_pointer (string, offset);

        unichar = g_utf8_get_char(index);
    }

    g_free(string);
    return unichar;
}

static gchar*
eel_editable_label_accessible_get_text_before_offset (AtkText         *text,
        gint            offset,
        AtkTextBoundary boundary_type,
        gint            *start_offset,
        gint            *end_offset)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    EelEditableLabelAccessiblePrivate *priv;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return NULL;

    label = EEL_EDITABLE_LABEL (widget);
    priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data);

    return gail_text_util_get_text (priv->textutil,
                                    eel_editable_label_get_layout (label),
                                    GAIL_BEFORE_OFFSET,
                                    boundary_type, offset,
                                    start_offset, end_offset);
}

static gchar*
eel_editable_label_accessible_get_text_at_offset (AtkText          *text,
        gint             offset,
        AtkTextBoundary  boundary_type,
        gint             *start_offset,
        gint             *end_offset)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    EelEditableLabelAccessiblePrivate *priv;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return NULL;


    label = EEL_EDITABLE_LABEL (widget);
    priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data);
    return gail_text_util_get_text (priv->textutil,
                                    eel_editable_label_get_layout (label),
                                    GAIL_AT_OFFSET,
                                    boundary_type, offset,
                                    start_offset, end_offset);
}

static gchar*
eel_editable_label_accessible_get_text_after_offset  (AtkText          *text,
        gint             offset,
        AtkTextBoundary  boundary_type,
        gint             *start_offset,
        gint             *end_offset)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    EelEditableLabelAccessiblePrivate *priv;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return NULL;

    label = EEL_EDITABLE_LABEL (widget);
    priv = g_object_get_data (G_OBJECT (text), eel_editable_label_accessible_data);
    return gail_text_util_get_text (priv->textutil,
                                    eel_editable_label_get_layout (label),
                                    GAIL_AFTER_OFFSET,
                                    boundary_type, offset,
                                    start_offset, end_offset);
}

static gint
eel_editable_label_accessible_get_caret_offset (AtkText *text)
{
    GtkWidget *widget;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return 0;

    return gtk_editable_get_position (GTK_EDITABLE (widget));
}

static gboolean
eel_editable_label_accessible_set_caret_offset (AtkText *text, gint offset)
{
    GtkWidget *widget;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return FALSE;

    gtk_editable_set_position (GTK_EDITABLE (widget), offset);
    return TRUE;
}

static gint
eel_editable_label_accessible_get_character_count (AtkText *text)
{
    GtkWidget *widget;
    EelEditableLabel *label;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return 0;

    label = EEL_EDITABLE_LABEL (widget);
    return g_utf8_strlen (eel_editable_label_get_text (label), -1);
}

static gint
eel_editable_label_accessible_get_n_selections (AtkText *text)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    gint select_start, select_end;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return -1;

    label = EEL_EDITABLE_LABEL (widget);
    gtk_editable_get_selection_bounds (GTK_EDITABLE (label), &select_start,
                                       &select_end);

    if (select_start != select_end)
        return 1;
    else
        return 0;
}

static gchar*
eel_editable_label_accessible_get_selection (AtkText *text,
        gint    selection_num,
        gint    *start_pos,
        gint    *end_pos)
{
    GtkWidget *widget;
    EelEditableLabel *label;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return NULL;

    /* Only let the user get the selection if one is set, and if the
     * selection_num is 0.
     */
    if (selection_num != 0)
        return NULL;

    label = EEL_EDITABLE_LABEL (widget);
    gtk_editable_get_selection_bounds (GTK_EDITABLE (label), start_pos, end_pos);

    if (*start_pos != *end_pos)
        return gtk_editable_get_chars (GTK_EDITABLE (label), *start_pos, *end_pos);
    else
        return NULL;
}

static gboolean
eel_editable_label_accessible_add_selection (AtkText *text,
        gint    start_pos,
        gint    end_pos)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    gint select_start, select_end;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return FALSE;

    label = EEL_EDITABLE_LABEL (widget);
    gtk_editable_get_selection_bounds (GTK_EDITABLE (label), &select_start,
                                       &select_end);

    /* If there is already a selection, then don't allow another to be added,
     * since EelEditableLabel only supports one selected region.
     */
    if (select_start == select_end)
    {
        gtk_editable_select_region (GTK_EDITABLE (label), start_pos, end_pos);
        return TRUE;
    }
    else
        return FALSE;
}

static gboolean
eel_editable_label_accessible_remove_selection (AtkText *text,
        gint    selection_num)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    gint select_start, select_end, caret_pos;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return FALSE;

    if (selection_num != 0)
        return FALSE;

    label = EEL_EDITABLE_LABEL (widget);
    gtk_editable_get_selection_bounds (GTK_EDITABLE (label), &select_start,
                                       &select_end);

    if (select_start != select_end)
    {
        /* Setting the start & end of the selected region to the caret position
         * turns off the selection.
         */
        caret_pos = gtk_editable_get_position (GTK_EDITABLE (label));
        gtk_editable_select_region (GTK_EDITABLE (label), caret_pos, caret_pos);
        return TRUE;
    }
    else
        return FALSE;
}

static gboolean
eel_editable_label_accessible_set_selection (AtkText *text,
        gint    selection_num,
        gint    start_pos,
        gint    end_pos)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    gint select_start, select_end;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return FALSE;

    /* Only let the user move the selection if one is set, and if the
     * selection_num is 0
     */
    if (selection_num != 0)
        return FALSE;

    label = EEL_EDITABLE_LABEL (widget);
    gtk_editable_get_selection_bounds (GTK_EDITABLE (label), &select_start,
                                       &select_end);

    if (select_start != select_end)
    {
        gtk_editable_select_region (GTK_EDITABLE (label), start_pos, end_pos);
        return TRUE;
    }
    else
        return FALSE;
}

static AtkAttributeSet*
eel_editable_label_accessible_get_run_attributes (AtkText *text,
        gint    offset,
        gint    *start_offset,
        gint    *end_offset)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    AtkAttributeSet *at_set = NULL;
    GtkTextDirection dir;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return NULL;

    label = EEL_EDITABLE_LABEL (widget);

    dir = gtk_widget_get_direction (widget);
    if (dir == GTK_TEXT_DIR_RTL)
    {
        at_set = gail_misc_add_attribute (at_set,
                                          ATK_TEXT_ATTR_DIRECTION,
                                          g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_DIRECTION, dir)));
    }

    at_set = gail_misc_layout_get_run_attributes (at_set,
             eel_editable_label_get_layout (label),
             label->text,
             offset,
             start_offset,
             end_offset);
    return at_set;
}

static AtkAttributeSet*
eel_editable_label_accessible_get_default_attributes (AtkText *text)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    AtkAttributeSet *at_set = NULL;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return NULL;

    label = EEL_EDITABLE_LABEL (widget);

    at_set = gail_misc_get_default_attributes (at_set,
             eel_editable_label_get_layout (label),
             widget);
    return at_set;
}

static void
eel_editable_label_accessible_get_character_extents (AtkText      *text,
        gint         offset,
        gint         *x,
        gint         *y,
        gint         *width,
        gint         *height,
        AtkCoordType coords)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    PangoRectangle char_rect;
    gint index, cursor_index, x_layout, y_layout;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return;

    label = EEL_EDITABLE_LABEL (widget);
    eel_editable_label_get_layout_offsets (label, &x_layout, &y_layout);
    index = g_utf8_offset_to_pointer (label->text, offset) - label->text;
    cursor_index = label->selection_anchor;
    if (index > cursor_index)
        index += label->preedit_length;
    pango_layout_index_to_pos (eel_editable_label_get_layout(label), index, &char_rect);

    gail_misc_get_extents_from_pango_rectangle (widget, &char_rect,
            x_layout, y_layout, x, y, width, height, coords);
}

static gint
eel_editable_label_accessible_get_offset_at_point (AtkText      *text,
        gint         x,
        gint         y,
        AtkCoordType coords)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    gint index, cursor_index, x_layout, y_layout;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return -1;

    label = EEL_EDITABLE_LABEL (widget);

    eel_editable_label_get_layout_offsets (label, &x_layout, &y_layout);

    index = gail_misc_get_index_at_point_in_layout (widget,
            eel_editable_label_get_layout(label), x_layout, y_layout, x, y, coords);
    if (index == -1)
    {
        if (coords == ATK_XY_SCREEN || coords == ATK_XY_WINDOW)
            return g_utf8_strlen (label->text, -1);

        return index;
    }
    else
    {
        cursor_index = label->selection_anchor;
        if (index >= cursor_index && label->preedit_length)
        {
            if (index >= cursor_index + label->preedit_length)
                index -= label->preedit_length;
            else
                index = cursor_index;
        }
        return g_utf8_pointer_to_offset (label->text, label->text + index);
    }
}

static void
atk_text_interface_init (AtkTextIface *iface)
{
    g_assert (iface != NULL);

    iface->get_text = eel_editable_label_accessible_get_text;
    iface->get_character_at_offset = eel_editable_label_accessible_get_character_at_offset;
    iface->get_text_before_offset = eel_editable_label_accessible_get_text_before_offset;
    iface->get_text_at_offset = eel_editable_label_accessible_get_text_at_offset;
    iface->get_text_after_offset = eel_editable_label_accessible_get_text_after_offset;
    iface->get_caret_offset = eel_editable_label_accessible_get_caret_offset;
    iface->set_caret_offset = eel_editable_label_accessible_set_caret_offset;
    iface->get_character_count = eel_editable_label_accessible_get_character_count;
    iface->get_n_selections = eel_editable_label_accessible_get_n_selections;
    iface->get_selection = eel_editable_label_accessible_get_selection;
    iface->add_selection = eel_editable_label_accessible_add_selection;
    iface->remove_selection = eel_editable_label_accessible_remove_selection;
    iface->set_selection = eel_editable_label_accessible_set_selection;
    iface->get_run_attributes = eel_editable_label_accessible_get_run_attributes;
    iface->get_default_attributes = eel_editable_label_accessible_get_default_attributes;
    iface->get_character_extents = eel_editable_label_accessible_get_character_extents;
    iface->get_offset_at_point = eel_editable_label_accessible_get_offset_at_point;
}

static void
eel_editable_label_accessible_set_text_contents (AtkEditableText *text,
        const gchar     *string)
{
    GtkWidget *widget;
    EelEditableLabel *label;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return;

    label = EEL_EDITABLE_LABEL (widget);

    eel_editable_label_set_text (label, string);
}

static void
eel_editable_label_accessible_insert_text (AtkEditableText *text,
        const gchar     *string,
        gint            length,
        gint            *position)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    GtkEditable *editable;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return;

    label = EEL_EDITABLE_LABEL (widget);
    editable = GTK_EDITABLE (label);

    gtk_editable_insert_text (editable, string, length, position);
}

static void
eel_editable_label_accessible_copy_text   (AtkEditableText *text,
        gint            start_pos,
        gint            end_pos)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    GtkEditable *editable;
    gchar *str;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return;

    label = EEL_EDITABLE_LABEL (widget);
    editable = GTK_EDITABLE (label);
    str = gtk_editable_get_chars (editable, start_pos, end_pos);
    gtk_clipboard_set_text (gtk_clipboard_get (GDK_NONE), str, -1);
}

static void
eel_editable_label_accessible_cut_text (AtkEditableText *text,
                                        gint            start_pos,
                                        gint            end_pos)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    GtkEditable *editable;
    gchar *str;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return;

    label = EEL_EDITABLE_LABEL (widget);
    editable = GTK_EDITABLE (label);
    str = gtk_editable_get_chars (editable, start_pos, end_pos);
    gtk_clipboard_set_text (gtk_clipboard_get (GDK_NONE), str, -1);
    gtk_editable_delete_text (editable, start_pos, end_pos);
}

static void
eel_editable_label_accessible_delete_text (AtkEditableText *text,
        gint            start_pos,
        gint            end_pos)
{
    GtkWidget *widget;
    EelEditableLabel *label;
    GtkEditable *editable;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return;

    label = EEL_EDITABLE_LABEL (widget);
    editable = GTK_EDITABLE (label);

    gtk_editable_delete_text (editable, start_pos, end_pos);
}

static void
eel_editable_label_accessible_paste_received (GtkClipboard *clipboard,
        const gchar  *text,
        gpointer     data)
{
    EelEditableLabelAccessiblePaste* paste_struct = (EelEditableLabelAccessiblePaste *)data;

    if (text)
        gtk_editable_insert_text (GTK_EDITABLE (paste_struct->label), text, -1,
                                  &(paste_struct->position));

    g_object_unref (paste_struct->label);
}

static void
eel_editable_label_accessible_paste_text (AtkEditableText *text,
        gint            position)
{
    GtkWidget *widget;
    GtkEditable *editable;
    EelEditableLabelAccessiblePaste paste_struct;

    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
    if (widget == NULL)
        /* State is defunct */
        return;

    editable = GTK_EDITABLE (widget);
    if (!gtk_editable_get_editable (editable))
        return;
    paste_struct.label = EEL_EDITABLE_LABEL (widget);
    paste_struct.position = position;

    g_object_ref (paste_struct.label);
    gtk_clipboard_request_text (gtk_clipboard_get (GDK_NONE),
                                eel_editable_label_accessible_paste_received, &paste_struct);
}

static void
atk_editable_text_interface_init (AtkEditableTextIface *iface)
{
    g_assert (iface != NULL);

    iface->set_text_contents = eel_editable_label_accessible_set_text_contents;
    iface->insert_text = eel_editable_label_accessible_insert_text;
    iface->copy_text = eel_editable_label_accessible_copy_text;
    iface->cut_text = eel_editable_label_accessible_cut_text;
    iface->delete_text = eel_editable_label_accessible_delete_text;
    iface->paste_text = eel_editable_label_accessible_paste_text;
}

static void
eel_editable_label_accessible_notify_insert (AtkObject *accessible)
{
    EelEditableLabelAccessiblePrivate *priv;

    priv = g_object_get_data (G_OBJECT (accessible), eel_editable_label_accessible_data);
    if (priv->signal_name)
    {
        g_signal_emit_by_name (accessible,
                               priv->signal_name,
                               priv->position,
                               priv->length);
        priv->signal_name = NULL;
    }
}

static gboolean
eel_editable_label_accessible_idle_notify_insert (gpointer data)
{
    eel_editable_label_accessible_notify_insert (data);
    return FALSE;
}

/* Note arg1 returns the character at the start of the insert.
 * arg2 returns the number of characters inserted.
 */
static void
eel_editable_label_accessible_insert_text_cb (EelEditableLabel *label,
        gchar            *arg1,
        gint             arg2,
        gpointer         arg3)
{
    AtkObject *accessible;
    EelEditableLabelAccessiblePrivate *priv;
    gint *position = (gint *) arg3;

    accessible = gtk_widget_get_accessible (GTK_WIDGET (label));
    priv = g_object_get_data (G_OBJECT (accessible), eel_editable_label_accessible_data);
    if (!priv->signal_name)
    {
        priv->signal_name = "text_changed::insert";
        priv->position = *position;
        priv->length = arg2;
    }
    /*
     * The signal will be emitted when the cursor position is updated.
     * or in an idle handler if it not updated.
     */
    g_idle_add (eel_editable_label_accessible_idle_notify_insert, accessible);
}

/* Note arg1 returns the start of the delete range, arg2 returns the
 * end of the delete range if multiple characters are deleted.
 */
static void
eel_editable_label_accessible_delete_text_cb (EelEditableLabel *label,
        gint             arg1,
        gint             arg2)
{
    AtkObject *accessible;

    accessible = gtk_widget_get_accessible (GTK_WIDGET (label));

    /*
     * Zero length text deleted so ignore
     */
    if (arg2 - arg1 == 0)
        return;

    g_signal_emit_by_name (accessible, "text_changed::delete", arg1, arg2 - arg1);
}

static void
eel_editable_label_accessible_changed_cb (EelEditableLabel *label)
{
    AtkObject *accessible;
    EelEditableLabelAccessiblePrivate *priv;

    accessible = gtk_widget_get_accessible (GTK_WIDGET (label));
    priv = g_object_get_data (G_OBJECT (accessible), eel_editable_label_accessible_data);
    gail_text_util_text_setup (priv->textutil, eel_editable_label_get_text (label));
}

static gboolean
check_for_selection_change (AtkObject   *accessible,
                            GtkWidget   *widget)
{
    EelEditableLabelAccessiblePrivate *priv;
    EelEditableLabel *label;
    gboolean ret_val = FALSE;

    priv = g_object_get_data (G_OBJECT (accessible), eel_editable_label_accessible_data);
    label = EEL_EDITABLE_LABEL (widget);

    if (label->selection_anchor != label->selection_end)
    {
        if (label->selection_anchor != priv->selection_anchor ||
                label->selection_end != priv->selection_end)
            /*
             * This check is here as this function can be called
             * for notification of selection_end and selection_anchor.
             * The values of selection_anchor and selection_end may be the same
             * for both notifications and we only want to generate one
             * text_selection_changed signal.
             */
            ret_val = TRUE;
    }
    else
    {
        /* We had a selection */
        ret_val = (priv->selection_anchor != priv->selection_end);
    }
    priv->selection_anchor = label->selection_anchor;
    priv->selection_end = label->selection_end;

    return ret_val;
}

static void
eel_editable_label_accessible_notify_gtk (GObject    *obj,
        GParamSpec *pspec)
{
    GtkWidget *widget;
    AtkObject *accessible;
    EelEditableLabel *label;

    widget = GTK_WIDGET (obj);
    label = EEL_EDITABLE_LABEL (widget);
    accessible = gtk_widget_get_accessible (widget);

    if (strcmp (pspec->name, "cursor-position") == 0)
    {
        eel_editable_label_accessible_notify_insert (accessible);
        if (check_for_selection_change (accessible, widget))
            g_signal_emit_by_name (accessible, "text_selection_changed");
        /*
         * The label cursor position has moved so generate the signal.
         */
        g_signal_emit_by_name (accessible, "text_caret_moved",
                               g_utf8_pointer_to_offset (label->text,
                                       label->text + label->selection_anchor));
    }
    else if (strcmp (pspec->name, "selection-bound") == 0)
    {
        eel_editable_label_accessible_notify_insert (accessible);

        if (check_for_selection_change (accessible, widget))
            g_signal_emit_by_name (accessible, "text_selection_changed");
    }
}

static void
eel_editable_label_accessible_initialize (AtkObject *accessible,
        gpointer   widget)
{
    EelEditableLabelAccessiblePrivate *priv;
    EelEditableLabel *label;

    a11y_parent_class->initialize (accessible, widget);

    label = EEL_EDITABLE_LABEL (widget);
    priv = g_new0 (EelEditableLabelAccessiblePrivate, 1);
    priv->textutil = gail_text_util_new ();
    gail_text_util_text_setup (priv->textutil, eel_editable_label_get_text (EEL_EDITABLE_LABEL (widget)));
    priv->selection_anchor = label->selection_anchor;
    priv->selection_end = label->selection_end;
    g_object_set_data (G_OBJECT (accessible), eel_editable_label_accessible_data, priv);
    g_signal_connect (widget, "insert-text",
                      G_CALLBACK (eel_editable_label_accessible_insert_text_cb), NULL);
    g_signal_connect (widget, "delete-text",
                      G_CALLBACK (eel_editable_label_accessible_delete_text_cb), NULL);
    g_signal_connect (widget, "changed",
                      G_CALLBACK (eel_editable_label_accessible_changed_cb), NULL);

    g_signal_connect (widget,
                      "notify",
                      G_CALLBACK (eel_editable_label_accessible_notify_gtk),
                      NULL);
    atk_object_set_role (accessible, ATK_ROLE_TEXT);
}

static const gchar* eel_editable_label_accessible_get_name(AtkObject* accessible)
{
    if (accessible->name != NULL)
    {
        return accessible->name;
    }
    else
    {
        GtkWidget* widget;

        widget = gtk_accessible_get_widget(GTK_ACCESSIBLE(accessible));

        if (widget == NULL)
        {
            /* State is defunct */
            return NULL;
        }

        g_assert(EEL_IS_EDITABLE_LABEL(widget));

        return eel_editable_label_get_text(EEL_EDITABLE_LABEL(widget));
    }
}

static AtkStateSet*
eel_editable_label_accessible_ref_state_set (AtkObject *accessible)
{
    AtkStateSet *state_set;
    GtkWidget *widget;

    state_set = a11y_parent_class->ref_state_set (accessible);
    widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));

    if (widget == NULL)
        return state_set;

    atk_state_set_add_state (state_set, ATK_STATE_EDITABLE);
    atk_state_set_add_state (state_set, ATK_STATE_MULTI_LINE);
    return state_set;
}

static void
eel_editable_label_accessible_finalize (GObject *object)
{
    EelEditableLabelAccessiblePrivate *priv;

    priv = g_object_get_data (object, eel_editable_label_accessible_data);
    g_object_unref (priv->textutil);
    g_free (priv);
    G_OBJECT_CLASS (a11y_parent_class)->finalize (object);
}

G_DEFINE_TYPE_WITH_CODE (EelEditableLabelAccessible,
                         eel_editable_label_accessible,
                         GTK_TYPE_WIDGET_ACCESSIBLE,
                         G_IMPLEMENT_INTERFACE (ATK_TYPE_EDITABLE_TEXT,
                                                atk_editable_text_interface_init)
                         G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT,
                                                atk_text_interface_init));

static void
eel_editable_label_accessible_class_init (EelEditableLabelAccessibleClass *klass)
{
    AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
    GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

    a11y_parent_class = g_type_class_peek_parent (klass);

    atk_class->initialize = eel_editable_label_accessible_initialize;
    atk_class->get_name = eel_editable_label_accessible_get_name;
    atk_class->ref_state_set = eel_editable_label_accessible_ref_state_set;
    gobject_class->finalize = eel_editable_label_accessible_finalize;
}

static void
eel_editable_label_accessible_init (EelEditableLabelAccessible *accessible)
{
}
