546 lines
16 KiB
C
546 lines
16 KiB
C
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/* GTK - The GIMP Toolkit
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* Copyright (C) 2020, Red Hat, Inc
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkdragsource.h"
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#include "gtkdroptarget.h"
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#include "gtkeditablelabel.h"
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#include "gtkeditable.h"
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#include "gtklabel.h"
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#include "gtkstack.h"
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#include "gtktext.h"
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#include "gtkbinlayout.h"
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#include "gtkgestureclick.h"
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#include "gtkprivate.h"
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#include "gtkshortcut.h"
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#include "gtkshortcuttrigger.h"
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#include "gtkwidgetprivate.h"
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#include "gtkeventcontrollerfocus.h"
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/**
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* GtkEditableLabel:
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*
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* A `GtkEditableLabel` is a label that allows users to
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* edit the text by switching to an “edit mode”.
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*
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* 
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*
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* `GtkEditableLabel` does not have API of its own, but it
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* implements the [iface@Gtk.Editable] interface.
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*
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* The default bindings for activating the edit mode is
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* to click or press the Enter key. The default bindings
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* for leaving the edit mode are the Enter key (to save
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* the results) or the Escape key (to cancel the editing).
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*
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* # CSS nodes
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*
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* ```
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* editablelabel[.editing]
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* ╰── stack
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* ├── label
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* ╰── text
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* ```
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*
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* `GtkEditableLabel` has a main node with the name editablelabel.
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* When the entry is in editing mode, it gets the .editing style
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* class.
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*
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* For all the subnodes added to the text node in various situations,
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* see [class@Gtk.Text].
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*/
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struct _GtkEditableLabel
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{
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GtkWidget parent_instance;
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GtkWidget *stack;
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GtkWidget *label;
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GtkWidget *entry;
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guint stop_editing_soon_id;
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};
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struct _GtkEditableLabelClass
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{
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GtkWidgetClass parent_class;
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};
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enum
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{
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PROP_EDITING = 1,
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NUM_PROPERTIES
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};
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static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
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static GtkEditable *
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gtk_editable_label_get_delegate (GtkEditable *editable)
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{
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GtkEditableLabel *self = GTK_EDITABLE_LABEL (editable);
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return GTK_EDITABLE (self->entry);
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}
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static void
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gtk_editable_label_editable_init (GtkEditableInterface *iface)
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{
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iface->get_delegate = gtk_editable_label_get_delegate;
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}
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G_DEFINE_TYPE_WITH_CODE (GtkEditableLabel, gtk_editable_label, GTK_TYPE_WIDGET,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
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gtk_editable_label_editable_init))
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static void
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start_editing (GtkWidget *widget,
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const char *action_name,
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GVariant *parameters)
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{
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gtk_editable_label_start_editing (GTK_EDITABLE_LABEL (widget));
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}
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static void
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stop_editing (GtkWidget *widget,
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const char *action_name,
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GVariant *parameters)
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{
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gtk_editable_label_stop_editing (GTK_EDITABLE_LABEL (widget),
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g_variant_get_boolean (parameters));
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}
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static void
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clicked_cb (GtkWidget *self)
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{
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gtk_widget_activate_action (self, "editing.start", NULL);
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}
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static void
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activate_cb (GtkWidget *self)
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{
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gtk_widget_activate_action (self, "editing.stop", "b", TRUE);
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}
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static void
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text_changed (GtkEditableLabel *self)
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{
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/* Sync the entry text to the label, unless we are editing.
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*
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* This is necessary to catch apis like gtk_editable_insert_text(),
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* which don't go through the text property.
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*/
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if (!gtk_editable_label_get_editing (self))
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{
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const char *text = gtk_editable_get_text (GTK_EDITABLE (self->entry));
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gtk_label_set_label (GTK_LABEL (self->label), text);
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}
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}
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static gboolean
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gtk_editable_label_drag_accept (GtkDropTarget *dest,
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GdkDrop *drop,
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GtkEditableLabel *self)
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{
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if (!gtk_editable_get_editable (GTK_EDITABLE (self)))
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return FALSE;
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if ((gdk_drop_get_actions (drop) & gtk_drop_target_get_actions (dest)) == 0)
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return FALSE;
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return gdk_content_formats_match (gtk_drop_target_get_formats (dest), gdk_drop_get_formats (drop));
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}
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static gboolean
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gtk_editable_label_drag_drop (GtkDropTarget *dest,
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const GValue *value,
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double x,
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double y,
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GtkEditableLabel *self)
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{
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if (!gtk_editable_get_editable (GTK_EDITABLE (self)))
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return FALSE;
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gtk_editable_set_text (GTK_EDITABLE (self), g_value_get_string (value));
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return TRUE;
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}
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static GdkContentProvider *
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gtk_editable_label_prepare_drag (GtkDragSource *source,
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double x,
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double y,
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GtkEditableLabel *self)
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{
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if (!gtk_editable_get_editable (GTK_EDITABLE (self)))
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return NULL;
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return gdk_content_provider_new_typed (G_TYPE_STRING,
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gtk_label_get_label (GTK_LABEL (self->label)));
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}
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static gboolean
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stop_editing_soon (gpointer data)
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{
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GtkEventController *controller = data;
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GtkEditableLabel *self = GTK_EDITABLE_LABEL (gtk_event_controller_get_widget (controller));
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if (!gtk_event_controller_focus_contains_focus (GTK_EVENT_CONTROLLER_FOCUS (controller)))
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gtk_editable_label_stop_editing (self, TRUE);
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self->stop_editing_soon_id = 0;
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return FALSE;
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}
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static void
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gtk_editable_label_focus_out (GtkEventController *controller,
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GtkEditableLabel *self)
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{
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if (self->stop_editing_soon_id == 0)
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self->stop_editing_soon_id = g_timeout_add (100, stop_editing_soon, controller);
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}
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static void
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gtk_editable_label_init (GtkEditableLabel *self)
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{
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GtkGesture *gesture;
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GtkDropTarget *target;
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GtkDragSource *source;
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GtkEventController *controller;
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gtk_widget_set_focusable (GTK_WIDGET (self), TRUE);
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self->stack = gtk_stack_new ();
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self->label = gtk_label_new ("");
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gtk_label_set_xalign (GTK_LABEL (self->label), 0.0);
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self->entry = gtk_text_new ();
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gtk_stack_add_named (GTK_STACK (self->stack), self->label, "label");
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gtk_stack_add_named (GTK_STACK (self->stack), self->entry, "entry");
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gtk_widget_set_parent (self->stack, GTK_WIDGET (self));
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gesture = gtk_gesture_click_new ();
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g_signal_connect_swapped (gesture, "released", G_CALLBACK (clicked_cb), self);
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gtk_widget_add_controller (self->label, GTK_EVENT_CONTROLLER (gesture));
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g_signal_connect_swapped (self->entry, "activate", G_CALLBACK (activate_cb), self);
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g_signal_connect_swapped (self->entry, "notify::text", G_CALLBACK (text_changed), self);
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target = gtk_drop_target_new (G_TYPE_STRING, GDK_ACTION_COPY | GDK_ACTION_MOVE);
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g_signal_connect (target, "accept", G_CALLBACK (gtk_editable_label_drag_accept), self);
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g_signal_connect (target, "drop", G_CALLBACK (gtk_editable_label_drag_drop), self);
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gtk_widget_add_controller (self->label, GTK_EVENT_CONTROLLER (target));
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source = gtk_drag_source_new ();
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g_signal_connect (source, "prepare", G_CALLBACK (gtk_editable_label_prepare_drag), self);
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gtk_widget_add_controller (self->label, GTK_EVENT_CONTROLLER (source));
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controller = gtk_event_controller_focus_new ();
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g_signal_connect (controller, "leave", G_CALLBACK (gtk_editable_label_focus_out), self);
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gtk_widget_add_controller (GTK_WIDGET (self), controller);
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gtk_editable_init_delegate (GTK_EDITABLE (self));
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}
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static gboolean
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gtk_editable_label_grab_focus (GtkWidget *widget)
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{
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GtkEditableLabel *self = GTK_EDITABLE_LABEL (widget);
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if (gtk_editable_label_get_editing (self))
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return gtk_widget_grab_focus (self->entry);
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else
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return gtk_widget_grab_focus_self (widget);
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}
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static void
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gtk_editable_label_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkEditableLabel *self = GTK_EDITABLE_LABEL (object);
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if (gtk_editable_delegate_set_property (object, prop_id, value, pspec))
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{
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switch (prop_id)
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{
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case NUM_PROPERTIES + GTK_EDITABLE_PROP_TEXT:
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gtk_label_set_label (GTK_LABEL (self->label), g_value_get_string (value));
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break;
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case NUM_PROPERTIES + GTK_EDITABLE_PROP_WIDTH_CHARS:
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gtk_label_set_width_chars (GTK_LABEL (self->label), g_value_get_int (value));
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break;
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case NUM_PROPERTIES + GTK_EDITABLE_PROP_MAX_WIDTH_CHARS:
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gtk_label_set_max_width_chars (GTK_LABEL (self->label), g_value_get_int (value));
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break;
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case NUM_PROPERTIES + GTK_EDITABLE_PROP_XALIGN:
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gtk_label_set_xalign (GTK_LABEL (self->label), g_value_get_float (value));
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break;
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case NUM_PROPERTIES + GTK_EDITABLE_PROP_EDITABLE:
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{
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gboolean editable;
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editable = g_value_get_boolean (value);
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if (!editable)
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gtk_editable_label_stop_editing (self, FALSE);
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gtk_widget_action_set_enabled (GTK_WIDGET (self), "editing.start", editable);
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gtk_widget_action_set_enabled (GTK_WIDGET (self), "editing.stop", editable);
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}
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break;
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default: ;
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}
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return;
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}
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switch (prop_id)
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{
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case PROP_EDITING:
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if (g_value_get_boolean (value))
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gtk_editable_label_start_editing (self);
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else
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gtk_editable_label_stop_editing (self, FALSE);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_editable_label_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkEditableLabel *self = GTK_EDITABLE_LABEL (object);
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if (gtk_editable_delegate_get_property (object, prop_id, value, pspec))
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return;
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switch (prop_id)
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{
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case PROP_EDITING:
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g_value_set_boolean (value, gtk_editable_label_get_editing (self));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_editable_label_dispose (GObject *object)
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{
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GtkEditableLabel *self = GTK_EDITABLE_LABEL (object);
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gtk_editable_finish_delegate (GTK_EDITABLE (self));
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g_clear_pointer (&self->stack, gtk_widget_unparent);
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self->entry = NULL;
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self->label = NULL;
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g_clear_handle_id (&self->stop_editing_soon_id, g_source_remove);
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G_OBJECT_CLASS (gtk_editable_label_parent_class)->dispose (object);
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}
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static void
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gtk_editable_label_class_init (GtkEditableLabelClass *class)
|
||
|
|
{
|
||
|
|
GObjectClass *object_class = G_OBJECT_CLASS (class);
|
||
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
|
||
|
|
GtkShortcut *shortcut;
|
||
|
|
GtkShortcutTrigger *trigger;
|
||
|
|
GtkShortcutAction *action;
|
||
|
|
|
||
|
|
object_class->set_property = gtk_editable_label_set_property;
|
||
|
|
object_class->get_property = gtk_editable_label_get_property;
|
||
|
|
object_class->dispose = gtk_editable_label_dispose;
|
||
|
|
|
||
|
|
widget_class->grab_focus = gtk_editable_label_grab_focus;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* GtkEditableLabel:editing: (attributes org.gtk.Property.get=gtk_editable_label_get_editing)
|
||
|
|
*
|
||
|
|
* This property is %TRUE while the widget is in edit mode.
|
||
|
|
*/
|
||
|
|
properties[PROP_EDITING] =
|
||
|
|
g_param_spec_boolean ("editing", NULL, NULL,
|
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|
|
FALSE,
|
||
|
|
GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
|
||
|
|
|
||
|
|
g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
|
||
|
|
|
||
|
|
gtk_editable_install_properties (object_class, NUM_PROPERTIES);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* GtkEditableLabel|editing.start:
|
||
|
|
*
|
||
|
|
* Switch the widget into editing mode, so that the
|
||
|
|
* user can make changes to the text.
|
||
|
|
*
|
||
|
|
* The default bindings for this action are clicking
|
||
|
|
* on the widget and the Enter key.
|
||
|
|
*
|
||
|
|
* This action is disabled when `GtkEditableLabel:editing`
|
||
|
|
* is %FALSE.
|
||
|
|
*/
|
||
|
|
gtk_widget_class_install_action (widget_class, "editing.start", NULL, start_editing);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* GtkEditableLabel|editing.stop:
|
||
|
|
* @commit: Whether the make changes permanent
|
||
|
|
*
|
||
|
|
* Switch the widget out of editing mode. If @commit
|
||
|
|
* is %TRUE, then the results of the editing are taken
|
||
|
|
* as the new value of `GtkEditable:text`.
|
||
|
|
*
|
||
|
|
* The default binding for this action is the Escape
|
||
|
|
* key.
|
||
|
|
*
|
||
|
|
* This action is disabled when `GtkEditableLabel:editing`
|
||
|
|
* is %FALSE.
|
||
|
|
*/
|
||
|
|
gtk_widget_class_install_action (widget_class, "editing.stop", "b", stop_editing);
|
||
|
|
|
||
|
|
trigger = gtk_alternative_trigger_new (
|
||
|
|
gtk_alternative_trigger_new (
|
||
|
|
gtk_keyval_trigger_new (GDK_KEY_Return, 0),
|
||
|
|
gtk_keyval_trigger_new (GDK_KEY_ISO_Enter, 0)),
|
||
|
|
gtk_keyval_trigger_new (GDK_KEY_KP_Enter, 0));
|
||
|
|
action = gtk_named_action_new ("editing.start");
|
||
|
|
shortcut = gtk_shortcut_new (trigger, action);
|
||
|
|
gtk_widget_class_add_shortcut (widget_class, shortcut);
|
||
|
|
g_object_unref (shortcut);
|
||
|
|
|
||
|
|
gtk_widget_class_add_binding_action (widget_class,
|
||
|
|
GDK_KEY_Escape, 0,
|
||
|
|
"editing.stop",
|
||
|
|
"b", FALSE);
|
||
|
|
|
||
|
|
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
|
||
|
|
gtk_widget_class_set_css_name (widget_class, "editablelabel");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* gtk_editable_label_new:
|
||
|
|
* @str: the text for the label
|
||
|
|
*
|
||
|
|
* Creates a new `GtkEditableLabel` widget.
|
||
|
|
*
|
||
|
|
* Returns: the new `GtkEditableLabel`
|
||
|
|
*/
|
||
|
|
GtkWidget *
|
||
|
|
gtk_editable_label_new (const char *str)
|
||
|
|
{
|
||
|
|
return g_object_new (GTK_TYPE_EDITABLE_LABEL,
|
||
|
|
"text", str,
|
||
|
|
NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* gtk_editable_label_get_editing: (attributes org.gtk.Method.get_property=editing)
|
||
|
|
* @self: a `GtkEditableLabel`
|
||
|
|
*
|
||
|
|
* Returns whether the label is currently in “editing mode”.
|
||
|
|
*
|
||
|
|
* Returns: %TRUE if @self is currently in editing mode
|
||
|
|
*/
|
||
|
|
gboolean
|
||
|
|
gtk_editable_label_get_editing (GtkEditableLabel *self)
|
||
|
|
{
|
||
|
|
g_return_val_if_fail (GTK_IS_EDITABLE_LABEL (self), FALSE);
|
||
|
|
|
||
|
|
return gtk_stack_get_visible_child (GTK_STACK (self->stack)) == self->entry;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* gtk_editable_label_start_editing:
|
||
|
|
* @self: a `GtkEditableLabel`
|
||
|
|
*
|
||
|
|
* Switches the label into “editing mode”.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
gtk_editable_label_start_editing (GtkEditableLabel *self)
|
||
|
|
{
|
||
|
|
g_return_if_fail (GTK_IS_EDITABLE_LABEL (self));
|
||
|
|
|
||
|
|
if (gtk_editable_label_get_editing (self))
|
||
|
|
return;
|
||
|
|
|
||
|
|
gtk_stack_set_visible_child_name (GTK_STACK (self->stack), "entry");
|
||
|
|
gtk_widget_grab_focus (self->entry);
|
||
|
|
|
||
|
|
gtk_widget_add_css_class (GTK_WIDGET (self), "editing");
|
||
|
|
|
||
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_EDITING]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* gtk_editable_label_stop_editing:
|
||
|
|
* @self: a `GtkEditableLabel`
|
||
|
|
* @commit: whether to set the edited text on the label
|
||
|
|
*
|
||
|
|
* Switches the label out of “editing mode”.
|
||
|
|
*
|
||
|
|
* If @commit is %TRUE, the resulting text is kept as the
|
||
|
|
* [property@Gtk.Editable:text] property value, otherwise the
|
||
|
|
* resulting text is discarded and the label will keep its
|
||
|
|
* previous [property@Gtk.Editable:text] property value.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
gtk_editable_label_stop_editing (GtkEditableLabel *self,
|
||
|
|
gboolean commit)
|
||
|
|
{
|
||
|
|
g_return_if_fail (GTK_IS_EDITABLE_LABEL (self));
|
||
|
|
|
||
|
|
if (!gtk_editable_label_get_editing (self))
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (commit)
|
||
|
|
{
|
||
|
|
gtk_label_set_label (GTK_LABEL (self->label),
|
||
|
|
gtk_editable_get_text (GTK_EDITABLE (self->entry)));
|
||
|
|
gtk_stack_set_visible_child_name (GTK_STACK (self->stack), "label");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
gtk_stack_set_visible_child_name (GTK_STACK (self->stack), "label");
|
||
|
|
gtk_editable_set_text (GTK_EDITABLE (self->entry),
|
||
|
|
gtk_label_get_label (GTK_LABEL (self->label)));
|
||
|
|
}
|
||
|
|
|
||
|
|
gtk_widget_grab_focus (GTK_WIDGET (self));
|
||
|
|
|
||
|
|
gtk_widget_remove_css_class (GTK_WIDGET (self), "editing");
|
||
|
|
|
||
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_EDITING]);
|
||
|
|
}
|