date-chooser: add date chooser widget
This is mainly a copy-paste from an old branch authored by Matthias Clasen. The code style was updated to match Calendar's one, and the theming was improved a little bit.
This commit is contained in:
Georges Basile Stavracas Neto
@@ -0,0 +1,481 @@
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/* GTK - The GIMP Toolkit
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*
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* Copyright (C) 2015 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 "gcal-multi-choice.h"
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struct _GcalMultiChoice
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{
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GtkBox parent;
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GtkWidget *down_button;
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GtkWidget *stack;
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GtkWidget *up_button;
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gint value;
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gint min_value;
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gint max_value;
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gboolean wrap;
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gboolean animate;
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GtkWidget **choices;
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gint n_choices;
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guint click_id;
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GtkWidget *active;
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GtkWidget *label1;
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GtkWidget *label2;
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GcalMultiChoiceFormatCallback format_cb;
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gpointer format_data;
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GDestroyNotify format_destroy;
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};
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enum
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{
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PROP_VALUE = 1,
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PROP_MIN_VALUE,
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PROP_MAX_VALUE,
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PROP_WRAP,
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PROP_ANIMATE,
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PROP_CHOICES,
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NUM_PROPERTIES
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};
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enum
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{
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WRAPPED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0, };
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static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
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G_DEFINE_TYPE (GcalMultiChoice, gcal_multi_choice, GTK_TYPE_BOX)
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static gchar *
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get_value_string (GcalMultiChoice *self,
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gint value)
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{
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if (self->format_cb)
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return self->format_cb (self, value, self->format_data);
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else if (0 <= value && value < self->n_choices)
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return g_strdup (gtk_label_get_label (GTK_LABEL (self->choices[value])));
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else
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return g_strdup_printf ("%d", value);
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}
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static void
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set_value (GcalMultiChoice *self,
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gint value,
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GtkStackTransitionType transition)
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{
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GtkWidget *label;
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const gchar *name;
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gchar *text;
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value = CLAMP (value, self->min_value, self->max_value);
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if (self->value == value)
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return;
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self->value = value;
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if (gtk_stack_get_visible_child (GTK_STACK (self->stack)) == self->label1)
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{
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name = "label2";
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label = self->label2;
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}
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else
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{
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name = "label1";
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label = self->label1;
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}
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text = get_value_string (self, value);
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gtk_label_set_text (GTK_LABEL (label), text);
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g_free (text);
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if (!self->animate)
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transition = GTK_STACK_TRANSITION_TYPE_NONE;
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gtk_stack_set_visible_child_full (GTK_STACK (self->stack), name, transition);
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gtk_widget_set_sensitive (self->down_button,
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self->wrap || self->value > self->min_value);
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gtk_widget_set_sensitive (self->up_button,
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self->wrap || self->value < self->max_value);
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g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_VALUE]);
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}
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static void
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go_up (GcalMultiChoice *self)
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{
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gboolean wrapped = FALSE;
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gint value;
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value = self->value + 1;
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if (value > self->max_value)
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{
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if (!self->wrap)
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return;
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value = self->min_value;
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wrapped = TRUE;
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}
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set_value (self, value, GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT);
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if (wrapped)
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g_signal_emit (self, signals[WRAPPED], 0);
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}
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static void
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go_down (GcalMultiChoice *self)
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{
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gint value;
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gboolean wrapped = FALSE;
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value = self->value - 1;
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if (value < self->min_value)
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{
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if (!self->wrap)
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return;
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value = self->max_value;
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wrapped = TRUE;
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}
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set_value (self, value, GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT);
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if (wrapped)
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g_signal_emit (self, signals[WRAPPED], 0);
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}
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static gboolean
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button_activate (GcalMultiChoice *self,
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GtkWidget *button)
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{
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if (button == self->down_button)
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go_down (self);
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else if (button == self->up_button)
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go_up (self);
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else
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g_assert_not_reached ();
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return TRUE;
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}
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static gboolean
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button_timeout (gpointer user_data)
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{
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GcalMultiChoice *self = GCAL_MULTI_CHOICE (user_data);
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gboolean res;
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if (self->click_id == 0)
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return G_SOURCE_REMOVE;
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res = button_activate (self, self->active);
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if (!res)
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{
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g_source_remove (self->click_id);
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self->click_id = 0;
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}
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return res;
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}
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static gboolean
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button_press_cb (GtkWidget *widget,
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GdkEventButton *button,
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GcalMultiChoice *self)
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{
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gint double_click_time;
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if (button->type != GDK_BUTTON_PRESS)
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return TRUE;
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g_object_get (gtk_widget_get_settings (widget),
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"gtk-double-click-time", &double_click_time,
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NULL);
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if (self->click_id != 0)
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g_source_remove (self->click_id);
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self->active = widget;
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self->click_id = gdk_threads_add_timeout (double_click_time,
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button_timeout,
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self);
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g_source_set_name_by_id (self->click_id, "[gtk+] button_timeout");
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button_timeout (self);
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return TRUE;
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}
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static gboolean
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button_release_cb (GtkWidget *widget,
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GdkEventButton *event,
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GcalMultiChoice *self)
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{
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if (self->click_id != 0)
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{
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g_source_remove (self->click_id);
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self->click_id = 0;
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}
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self->active = NULL;
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return TRUE;
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}
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static void
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button_clicked_cb (GtkWidget *button,
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GcalMultiChoice *self)
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{
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if (self->click_id != 0)
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return;
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button_activate (self, button);
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}
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static void
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gcal_multi_choice_init (GcalMultiChoice *self)
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{
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gtk_widget_init_template (GTK_WIDGET (self));
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}
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static void
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gcal_multi_choice_dispose (GObject *object)
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{
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GcalMultiChoice *self = GCAL_MULTI_CHOICE (object);
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if (self->click_id != 0)
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{
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g_source_remove (self->click_id);
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self->click_id = 0;
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}
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g_free (self->choices);
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self->choices = NULL;
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if (self->format_destroy)
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{
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self->format_destroy (self->format_data);
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self->format_destroy = NULL;
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}
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G_OBJECT_CLASS (gcal_multi_choice_parent_class)->dispose (object);
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}
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static void
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gcal_multi_choice_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GcalMultiChoice *self = GCAL_MULTI_CHOICE (object);
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switch (property_id)
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{
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case PROP_VALUE:
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g_value_set_int (value, self->value);
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break;
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case PROP_MIN_VALUE:
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g_value_set_int (value, self->min_value);
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break;
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case PROP_MAX_VALUE:
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g_value_set_int (value, self->max_value);
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break;
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case PROP_WRAP:
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g_value_set_boolean (value, self->wrap);
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break;
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case PROP_ANIMATE:
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g_value_set_boolean (value, self->animate);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_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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gcal_multi_choice_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GcalMultiChoice *self = GCAL_MULTI_CHOICE (object);
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switch (property_id)
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{
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case PROP_VALUE:
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gcal_multi_choice_set_value (self, g_value_get_int (value));
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break;
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case PROP_MIN_VALUE:
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self->min_value = g_value_get_int (value);
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g_object_notify_by_pspec (object, properties[PROP_MIN_VALUE]);
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gcal_multi_choice_set_value (self, self->value);
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break;
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case PROP_MAX_VALUE:
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self->max_value = g_value_get_int (value);
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g_object_notify_by_pspec (object, properties[PROP_MAX_VALUE]);
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gcal_multi_choice_set_value (self, self->value);
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break;
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case PROP_WRAP:
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self->wrap = g_value_get_boolean (value);
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g_object_notify_by_pspec (object, properties[PROP_WRAP]);
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break;
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case PROP_ANIMATE:
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self->animate = g_value_get_boolean (value);
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g_object_notify_by_pspec (object, properties[PROP_ANIMATE]);
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break;
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case PROP_CHOICES:
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gcal_multi_choice_set_choices (self, (const gchar **)g_value_get_boxed (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_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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gcal_multi_choice_class_init (GcalMultiChoiceClass *class)
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{
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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object_class->dispose = gcal_multi_choice_dispose;
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object_class->set_property = gcal_multi_choice_set_property;
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object_class->get_property = gcal_multi_choice_get_property;
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properties[PROP_VALUE] =
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g_param_spec_int ("value", "Value", "Value",
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G_MININT, G_MAXINT, 0,
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G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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properties[PROP_MIN_VALUE] =
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g_param_spec_int ("min-value", "Minimum Value", "Minimum Value",
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G_MININT, G_MAXINT, 0,
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G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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properties[PROP_MAX_VALUE] =
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g_param_spec_int ("max-value", "Maximum Value", "Maximum Value",
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G_MININT, G_MAXINT, 0,
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G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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properties[PROP_WRAP] =
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g_param_spec_boolean ("wrap", "Wrap", "Wrap",
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FALSE,
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G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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properties[PROP_ANIMATE] =
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g_param_spec_boolean ("animate", "Animate", "Animate",
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FALSE,
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G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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properties[PROP_CHOICES] =
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g_param_spec_boxed ("choices", "Choices", "Choices",
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G_TYPE_STRV,
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G_PARAM_WRITABLE|G_PARAM_EXPLICIT_NOTIFY);
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g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
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signals[WRAPPED] =
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g_signal_new ("wrapped",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST,
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0,
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NULL, NULL,
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NULL,
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G_TYPE_NONE, 0);
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gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/calendar/multi-choice.ui");
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gtk_widget_class_bind_template_child (widget_class, GcalMultiChoice, down_button);
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gtk_widget_class_bind_template_child (widget_class, GcalMultiChoice, up_button);
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gtk_widget_class_bind_template_child (widget_class, GcalMultiChoice, stack);
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gtk_widget_class_bind_template_child (widget_class, GcalMultiChoice, label1);
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gtk_widget_class_bind_template_child (widget_class, GcalMultiChoice, label2);
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gtk_widget_class_bind_template_callback (widget_class, button_clicked_cb);
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gtk_widget_class_bind_template_callback (widget_class, button_press_cb);
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gtk_widget_class_bind_template_callback (widget_class, button_release_cb);
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gtk_widget_class_set_css_name (widget_class, "navigator");
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}
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GtkWidget *
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gcal_multi_choice_new (void)
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{
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return GTK_WIDGET (g_object_new (GCAL_TYPE_MULTI_CHOICE, NULL));
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}
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void
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gcal_multi_choice_set_value (GcalMultiChoice *self,
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gint value)
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{
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set_value (self, value, GTK_STACK_TRANSITION_TYPE_NONE);
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}
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gint
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gcal_multi_choice_get_value (GcalMultiChoice *self)
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{
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return self->value;
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}
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void
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gcal_multi_choice_set_choices (GcalMultiChoice *self,
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const gchar **choices)
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{
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gint i;
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for (i = 0; i < self->n_choices; i++)
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gtk_container_remove (GTK_CONTAINER (self->stack), self->choices[i]);
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g_free (self->choices);
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self->n_choices = g_strv_length ((gchar **)choices);
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self->choices = g_new (GtkWidget *, self->n_choices);
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for (i = 0; i < self->n_choices; i++)
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{
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self->choices[i] = gtk_label_new (choices[i]);
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gtk_widget_show (self->choices[i]);
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gtk_stack_add_named (GTK_STACK (self->stack),
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self->choices[i],
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choices[i]);
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}
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g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_CHOICES]);
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}
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void
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gcal_multi_choice_set_format_callback (GcalMultiChoice *self,
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GcalMultiChoiceFormatCallback callback,
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gpointer user_data,
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GDestroyNotify destroy)
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{
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if (self->format_destroy)
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self->format_destroy (self->format_data);
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self->format_cb = callback;
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self->format_data = user_data;
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self->format_destroy = destroy;
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}
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