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272 lines
8.4 KiB
C
272 lines
8.4 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2001, 2002, 2003 Sun Microsystems 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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <gtk/gtk.h>
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#include "gailspinbutton.h"
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#include "gailadjustment.h"
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#include "gail-private-macros.h"
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static void gail_spin_button_class_init (GailSpinButtonClass *klass);
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static void gail_spin_button_init (GailSpinButton *button);
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static void gail_spin_button_real_initialize (AtkObject *obj,
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gpointer data);
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static void gail_spin_button_finalize (GObject *object);
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static void atk_value_interface_init (AtkValueIface *iface);
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static void gail_spin_button_real_notify_gtk (GObject *obj,
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GParamSpec *pspec);
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static void gail_spin_button_get_current_value (AtkValue *obj,
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GValue *value);
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static void gail_spin_button_get_maximum_value (AtkValue *obj,
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GValue *value);
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static void gail_spin_button_get_minimum_value (AtkValue *obj,
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GValue *value);
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static void gail_spin_button_get_minimum_increment (AtkValue *obj,
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GValue *value);
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static gboolean gail_spin_button_set_current_value (AtkValue *obj,
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const GValue *value);
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static void gail_spin_button_value_changed (GtkAdjustment *adjustment,
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gpointer data);
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G_DEFINE_TYPE_WITH_CODE (GailSpinButton, gail_spin_button, GAIL_TYPE_ENTRY,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
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static void
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gail_spin_button_class_init (GailSpinButtonClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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GailWidgetClass *widget_class;
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widget_class = (GailWidgetClass*)klass;
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widget_class->notify_gtk = gail_spin_button_real_notify_gtk;
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class->initialize = gail_spin_button_real_initialize;
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gobject_class->finalize = gail_spin_button_finalize;
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}
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static void
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gail_spin_button_init (GailSpinButton *button)
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{
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}
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static void
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gail_spin_button_real_initialize (AtkObject *obj,
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gpointer data)
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{
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GtkAdjustment *adjustment;
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GailSpinButton *spin_button = GAIL_SPIN_BUTTON (obj);
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GtkSpinButton *gtk_spin_button;
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ATK_OBJECT_CLASS (gail_spin_button_parent_class)->initialize (obj, data);
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gtk_spin_button = GTK_SPIN_BUTTON (data);
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/*
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* If a GtkAdjustment already exists for the spin_button,
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* create the GailAdjustment
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*/
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adjustment = gtk_spin_button_get_adjustment (gtk_spin_button);
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if (adjustment)
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{
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spin_button->adjustment = gail_adjustment_new (adjustment);
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g_signal_connect (adjustment,
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"value-changed",
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G_CALLBACK (gail_spin_button_value_changed),
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obj);
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}
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else
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spin_button->adjustment = NULL;
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obj->role = ATK_ROLE_SPIN_BUTTON;
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}
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static void
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atk_value_interface_init (AtkValueIface *iface)
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{
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iface->get_current_value = gail_spin_button_get_current_value;
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iface->get_maximum_value = gail_spin_button_get_maximum_value;
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iface->get_minimum_value = gail_spin_button_get_minimum_value;
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iface->get_minimum_increment = gail_spin_button_get_minimum_increment;
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iface->set_current_value = gail_spin_button_set_current_value;
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}
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static void
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gail_spin_button_get_current_value (AtkValue *obj,
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GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_if_fail (GAIL_IS_SPIN_BUTTON (obj));
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return;
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atk_value_get_current_value (ATK_VALUE (spin_button->adjustment), value);
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}
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static void
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gail_spin_button_get_maximum_value (AtkValue *obj,
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GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_if_fail (GAIL_IS_SPIN_BUTTON (obj));
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return;
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atk_value_get_maximum_value (ATK_VALUE (spin_button->adjustment), value);
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}
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static void
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gail_spin_button_get_minimum_value (AtkValue *obj,
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GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_if_fail (GAIL_IS_SPIN_BUTTON (obj));
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return;
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atk_value_get_minimum_value (ATK_VALUE (spin_button->adjustment), value);
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}
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static void
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gail_spin_button_get_minimum_increment (AtkValue *obj, GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_if_fail (GAIL_IS_SPIN_BUTTON (obj));
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return;
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atk_value_get_minimum_increment (ATK_VALUE (spin_button->adjustment), value);
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}
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static gboolean
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gail_spin_button_set_current_value (AtkValue *obj,
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const GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_val_if_fail (GAIL_IS_SPIN_BUTTON (obj), FALSE);
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return FALSE;
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return atk_value_set_current_value (ATK_VALUE (spin_button->adjustment), value);
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}
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static void
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gail_spin_button_finalize (GObject *object)
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{
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GailSpinButton *spin_button = GAIL_SPIN_BUTTON (object);
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if (spin_button->adjustment)
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{
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g_object_unref (spin_button->adjustment);
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spin_button->adjustment = NULL;
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}
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G_OBJECT_CLASS (gail_spin_button_parent_class)->finalize (object);
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}
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static void
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gail_spin_button_real_notify_gtk (GObject *obj,
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GParamSpec *pspec)
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{
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GtkWidget *widget = GTK_WIDGET (obj);
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GailSpinButton *spin_button = GAIL_SPIN_BUTTON (gtk_widget_get_accessible (widget));
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if (strcmp (pspec->name, "adjustment") == 0)
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{
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/*
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* Get rid of the GailAdjustment for the GtkAdjustment
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* which was associated with the spin_button.
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*/
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GtkAdjustment* adjustment;
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GtkSpinButton* gtk_spin_button;
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if (spin_button->adjustment)
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{
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g_object_unref (spin_button->adjustment);
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spin_button->adjustment = NULL;
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}
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/*
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* Create the GailAdjustment when notify for "adjustment" property
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* is received
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*/
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gtk_spin_button = GTK_SPIN_BUTTON (widget);
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adjustment = gtk_spin_button_get_adjustment (gtk_spin_button);
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spin_button->adjustment = gail_adjustment_new (adjustment);
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g_signal_connect (adjustment,
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"value-changed",
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G_CALLBACK (gail_spin_button_value_changed),
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spin_button);
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}
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else
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GAIL_WIDGET_CLASS (gail_spin_button_parent_class)->notify_gtk (obj, pspec);
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}
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static void
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gail_spin_button_value_changed (GtkAdjustment *adjustment,
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gpointer data)
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{
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GailSpinButton *spin_button;
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gail_return_if_fail (adjustment != NULL);
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gail_return_if_fail (data != NULL);
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spin_button = GAIL_SPIN_BUTTON (data);
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g_object_notify (G_OBJECT (spin_button), "accessible-value");
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}
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