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gtk2/gtk/gtkdialog.c
Matthias Clasen 1743e18c87 GtkDialog: avoid underallocations 
GtkDialog changes its size depending on style properties. If
we only do this in response to ::style-updated, it happens during
the initial realization of the dialog and leads to the dialog
'growing' between when we determine the initial window size and
when we allocate it that size. So, do this beforehand.
2011-06-09 20:43:02 -04:00

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/* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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 <stdlib.h>
#include <string.h>
#include "gtkbutton.h"
#include "gtkdialog.h"
#include "gtkbbox.h"
#include "gtklabel.h"
#include "gtkmarshalers.h"
#include "gtkvbox.h"
#include "gtkmain.h"
#include "gtkintl.h"
#include "gtkbindings.h"
#include "gtkprivate.h"
#include "gtkbuildable.h"
/**
* SECTION:gtkdialog
* @Short_description: Create popup windows
* @Title: GtkDialog
* @See_also: #GtkVBox, #GtkWindow, #GtkButton
*
* Dialog boxes are a convenient way to prompt the user for a small amount
* of input, e.g. to display a message, ask a question, or anything else
* that does not require extensive effort on the user's part.
*
* GTK+ treats a dialog as a window split vertically. The top section is a
* #GtkVBox, and is where widgets such as a #GtkLabel or a #GtkEntry should
* be packed. The bottom area is known as the
* <structfield>action_area</structfield>. This is generally used for
* packing buttons into the dialog which may perform functions such as
* cancel, ok, or apply.
*
* #GtkDialog boxes are created with a call to gtk_dialog_new() or
* gtk_dialog_new_with_buttons(). gtk_dialog_new_with_buttons() is
* recommended; it allows you to set the dialog title, some convenient flags,
* and add simple buttons.
*
* If 'dialog' is a newly created dialog, the two primary areas of the
* window can be accessed through gtk_dialog_get_content_area() and
* gtk_dialog_get_action_area(), as can be seen from the example below.
*
* A 'modal' dialog (that is, one which freezes the rest of the application
* from user input), can be created by calling gtk_window_set_modal() on the
* dialog. Use the GTK_WINDOW() macro to cast the widget returned from
* gtk_dialog_new() into a #GtkWindow. When using gtk_dialog_new_with_buttons()
* you can also pass the #GTK_DIALOG_MODAL flag to make a dialog modal.
*
* If you add buttons to #GtkDialog using gtk_dialog_new_with_buttons(),
* gtk_dialog_add_button(), gtk_dialog_add_buttons(), or
* gtk_dialog_add_action_widget(), clicking the button will emit a signal
* called #GtkDialog::response with a response ID that you specified. GTK+
* will never assign a meaning to positive response IDs; these are entirely
* user-defined. But for convenience, you can use the response IDs in the
* #GtkResponseType enumeration (these all have values less than zero). If
* a dialog receives a delete event, the #GtkDialog::response signal will
* be emitted with a response ID of #GTK_RESPONSE_DELETE_EVENT.
*
* If you want to block waiting for a dialog to return before returning
* control flow to your code, you can call gtk_dialog_run(). This function
* enters a recursive main loop and waits for the user to respond to the
* dialog, returning the response ID corresponding to the button the user
* clicked.
*
* For the simple dialog in the following example, in reality you'd probably
* use #GtkMessageDialog to save yourself some effort. But you'd need to
* create the dialog contents manually if you had more than a simple message
* in the dialog.
* <example>
* <title>Simple GtkDialog usage</title>
* <programlisting>
* /&ast; Function to open a dialog box displaying the message provided. &ast;/
* void
* quick_message (gchar *message)
* {
* GtkWidget *dialog, *label, *content_area;
*
* /&ast; Create the widgets &ast;/
* dialog = gtk_dialog_new_with_buttons ("Message",
* main_application_window,
* GTK_DIALOG_DESTROY_WITH_PARENT,
* GTK_STOCK_OK,
* GTK_RESPONSE_NONE,
* NULL);
* content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
* label = gtk_label_new (message);
*
* /&ast; Ensure that the dialog box is destroyed when the user responds &ast;/
* g_signal_connect_swapped (dialog,
* "response",
* G_CALLBACK (gtk_widget_destroy),
* dialog);
*
* /&ast; Add the label, and show everything we've added to the dialog &ast;/
*
* gtk_container_add (GTK_CONTAINER (content_area), label);
* gtk_widget_show_all (dialog);
* }
* </programlisting>
* </example>
*
* <refsect2 id="GtkDialog-BUILDER-UI"><title>GtkDialog as GtkBuildable</title>
* <para>
* The GtkDialog implementation of the #GtkBuildable interface exposes the
* @vbox and @action_area as internal children with the names "vbox" and
* "action_area".
* </para>
* <para>
* GtkDialog supports a custom &lt;action-widgets&gt; element, which
* can contain multiple &lt;action-widget&gt; elements. The "response"
* attribute specifies a numeric response, and the content of the element
* is the id of widget (which should be a child of the dialogs @action_area).
* </para>
* <example>
* <title>A <structname>GtkDialog</structname> UI definition fragment.</title>
* <programlisting><![CDATA[
* <object class="GtkDialog" id="dialog1">
* <child internal-child="vbox">"
* <object class="GtkVBox" id="vbox">
* <child internal-child="action_area">
* <object class="GtkHButtonBox" id="button_box">
* <child>
* <object class="GtkButton" id="button_cancel"/>
* </child>
* <child>
* <object class="GtkButton" id="button_ok"/>
* </child>
* </object>
* </child>
* </object>
* </child>
* <action-widgets>
* <action-widget response="3">button_ok</action-widget>
* <action-widget response="-5">button_cancel</action-widget>
* </action-widgets>
* </object>
* ]]></programlisting>
* </example>
* </refsect2>
*/
struct _GtkDialogPrivate
{
GtkWidget *vbox;
GtkWidget *action_area;
};
typedef struct _ResponseData ResponseData;
struct _ResponseData
{
gint response_id;
};
static void gtk_dialog_add_buttons_valist (GtkDialog *dialog,
const gchar *first_button_text,
va_list args);
static gboolean gtk_dialog_delete_event_handler (GtkWidget *widget,
GdkEventAny *event,
gpointer user_data);
static void gtk_dialog_style_updated (GtkWidget *widget);
static void gtk_dialog_map (GtkWidget *widget);
static void gtk_dialog_close (GtkDialog *dialog);
static ResponseData * get_response_data (GtkWidget *widget,
gboolean create);
static void gtk_dialog_buildable_interface_init (GtkBuildableIface *iface);
static GObject * gtk_dialog_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const gchar *childname);
static gboolean gtk_dialog_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_dialog_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data);
enum {
PROP_0,
PROP_HAS_SEPARATOR
};
enum {
RESPONSE,
CLOSE,
LAST_SIGNAL
};
static guint dialog_signals[LAST_SIGNAL];
G_DEFINE_TYPE_WITH_CODE (GtkDialog, gtk_dialog, GTK_TYPE_WINDOW,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_dialog_buildable_interface_init))
static void
gtk_dialog_class_init (GtkDialogClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkBindingSet *binding_set;
gobject_class = G_OBJECT_CLASS (class);
widget_class = GTK_WIDGET_CLASS (class);
widget_class->map = gtk_dialog_map;
widget_class->style_updated = gtk_dialog_style_updated;
class->close = gtk_dialog_close;
g_type_class_add_private (gobject_class, sizeof (GtkDialogPrivate));
/**
* GtkDialog::response:
* @dialog: the object on which the signal is emitted
* @response_id: the response ID
*
* Emitted when an action widget is clicked, the dialog receives a
* delete event, or the application programmer calls gtk_dialog_response().
* On a delete event, the response ID is #GTK_RESPONSE_DELETE_EVENT.
* Otherwise, it depends on which action widget was clicked.
*/
dialog_signals[RESPONSE] =
g_signal_new (I_("response"),
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkDialogClass, response),
NULL, NULL,
_gtk_marshal_VOID__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
/**
* GtkDialog::close:
*
* The ::close signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted when the user uses a keybinding to close
* the dialog.
*
* The default binding for this signal is the Escape key.
*/
dialog_signals[CLOSE] =
g_signal_new (I_("close"),
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkDialogClass, close),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("content-area-border",
P_("Content area border"),
P_("Width of border around the main dialog area"),
0,
G_MAXINT,
2,
GTK_PARAM_READABLE));
/**
* GtkDialog:content-area-spacing:
*
* The default spacing used between elements of the
* content area of the dialog, as returned by
* gtk_dialog_get_content_area(), unless gtk_box_set_spacing()
* was called on that widget directly.
*
* Since: 2.16
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("content-area-spacing",
P_("Content area spacing"),
P_("Spacing between elements of the main dialog area"),
0,
G_MAXINT,
0,
GTK_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("button-spacing",
P_("Button spacing"),
P_("Spacing between buttons"),
0,
G_MAXINT,
6,
GTK_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("action-area-border",
P_("Action area border"),
P_("Width of border around the button area at the bottom of the dialog"),
0,
G_MAXINT,
5,
GTK_PARAM_READABLE));
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0, "close", 0);
}
static void
update_spacings (GtkDialog *dialog)
{
GtkDialogPrivate *priv = dialog->priv;
gint content_area_border;
gint content_area_spacing;
gint button_spacing;
gint action_area_border;
gtk_widget_style_get (GTK_WIDGET (dialog),
"content-area-border", &content_area_border,
"content-area-spacing", &content_area_spacing,
"button-spacing", &button_spacing,
"action-area-border", &action_area_border,
NULL);
gtk_container_set_border_width (GTK_CONTAINER (priv->vbox),
content_area_border);
if (!_gtk_box_get_spacing_set (GTK_BOX (priv->vbox)))
{
gtk_box_set_spacing (GTK_BOX (priv->vbox), content_area_spacing);
_gtk_box_set_spacing_set (GTK_BOX (priv->vbox), FALSE);
}
gtk_box_set_spacing (GTK_BOX (priv->action_area),
button_spacing);
gtk_container_set_border_width (GTK_CONTAINER (priv->action_area),
action_area_border);
}
static void
gtk_dialog_init (GtkDialog *dialog)
{
GtkDialogPrivate *priv;
dialog->priv = G_TYPE_INSTANCE_GET_PRIVATE (dialog,
GTK_TYPE_DIALOG,
GtkDialogPrivate);
priv = dialog->priv;
/* To avoid breaking old code that prevents destroy on delete event
* by connecting a handler, we have to have the FIRST signal
* connection on the dialog.
*/
g_signal_connect (dialog,
"delete-event",
G_CALLBACK (gtk_dialog_delete_event_handler),
NULL);
priv->vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (dialog), priv->vbox);
gtk_widget_show (priv->vbox);
priv->action_area = gtk_button_box_new (GTK_ORIENTATION_HORIZONTAL);
gtk_button_box_set_layout (GTK_BUTTON_BOX (priv->action_area),
GTK_BUTTONBOX_END);
gtk_box_pack_end (GTK_BOX (priv->vbox), priv->action_area,
FALSE, TRUE, 0);
gtk_widget_show (priv->action_area);
gtk_window_set_type_hint (GTK_WINDOW (dialog),
GDK_WINDOW_TYPE_HINT_DIALOG);
gtk_window_set_position (GTK_WINDOW (dialog), GTK_WIN_POS_CENTER_ON_PARENT);
update_spacings (dialog);
}
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_dialog_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->get_internal_child = gtk_dialog_buildable_get_internal_child;
iface->custom_tag_start = gtk_dialog_buildable_custom_tag_start;
iface->custom_finished = gtk_dialog_buildable_custom_finished;
}
static GObject *
gtk_dialog_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const gchar *childname)
{
GtkDialogPrivate *priv = GTK_DIALOG (buildable)->priv;
if (strcmp (childname, "vbox") == 0)
return G_OBJECT (priv->vbox);
else if (strcmp (childname, "action_area") == 0)
return G_OBJECT (priv->action_area);
return parent_buildable_iface->get_internal_child (buildable,
builder,
childname);
}
static gboolean
gtk_dialog_delete_event_handler (GtkWidget *widget,
GdkEventAny *event,
gpointer user_data)
{
/* emit response signal */
gtk_dialog_response (GTK_DIALOG (widget), GTK_RESPONSE_DELETE_EVENT);
/* Do the destroy by default */
return FALSE;
}
/* A far too tricky heuristic for getting the right initial
* focus widget if none was set. What we do is we focus the first
* widget in the tab chain, but if this results in the focus
* ending up on one of the response widgets _other_ than the
* default response, we focus the default response instead.
*
* Additionally, skip selectable labels when looking for the
* right initial focus widget.
*/
static void
gtk_dialog_map (GtkWidget *widget)
{
GtkWidget *default_widget, *focus;
GtkWindow *window = GTK_WINDOW (widget);
GtkDialog *dialog = GTK_DIALOG (widget);
GtkDialogPrivate *priv = dialog->priv;
GTK_WIDGET_CLASS (gtk_dialog_parent_class)->map (widget);
focus = gtk_window_get_focus (window);
if (!focus)
{
GList *children, *tmp_list;
GtkWidget *first_focus = NULL;
do
{
g_signal_emit_by_name (window, "move_focus", GTK_DIR_TAB_FORWARD);
focus = gtk_window_get_focus (window);
if (GTK_IS_LABEL (focus) &&
!gtk_label_get_current_uri (GTK_LABEL (focus)))
gtk_label_select_region (GTK_LABEL (focus), 0, 0);
if (first_focus == NULL)
first_focus = focus;
else if (first_focus == focus)
break;
if (!GTK_IS_LABEL (focus))
break;
}
while (TRUE);
tmp_list = children = gtk_container_get_children (GTK_CONTAINER (priv->action_area));
while (tmp_list)
{
GtkWidget *child = tmp_list->data;
default_widget = gtk_window_get_default_widget (window);
if ((focus == NULL || child == focus) &&
child != default_widget &&
default_widget)
{
gtk_widget_grab_focus (default_widget);
break;
}
tmp_list = tmp_list->next;
}
g_list_free (children);
}
}
static void
gtk_dialog_style_updated (GtkWidget *widget)
{
GTK_WIDGET_CLASS (gtk_dialog_parent_class)->style_updated (widget);
update_spacings (GTK_DIALOG (widget));
}
static GtkWidget *
dialog_find_button (GtkDialog *dialog,
gint response_id)
{
GtkDialogPrivate *priv = dialog->priv;
GtkWidget *child = NULL;
GList *children, *tmp_list;
children = gtk_container_get_children (GTK_CONTAINER (priv->action_area));
for (tmp_list = children; tmp_list; tmp_list = tmp_list->next)
{
ResponseData *rd = get_response_data (tmp_list->data, FALSE);
if (rd && rd->response_id == response_id)
{
child = tmp_list->data;
break;
}
}
g_list_free (children);
return child;
}
static void
gtk_dialog_close (GtkDialog *dialog)
{
/* Synthesize delete_event to close dialog. */
GtkWidget *widget = GTK_WIDGET (dialog);
GdkEvent *event;
event = gdk_event_new (GDK_DELETE);
event->any.window = g_object_ref (gtk_widget_get_window (widget));
event->any.send_event = TRUE;
gtk_main_do_event (event);
gdk_event_free (event);
}
/**
* gtk_dialog_new:
*
* Creates a new dialog box.
*
* Widgets should not be packed into this #GtkWindow
* directly, but into the @vbox and @action_area, as described above.
*
* Returns: the new dialog as a #GtkWidget
*/
GtkWidget*
gtk_dialog_new (void)
{
return g_object_new (GTK_TYPE_DIALOG, NULL);
}
static GtkWidget*
gtk_dialog_new_empty (const gchar *title,
GtkWindow *parent,
GtkDialogFlags flags)
{
GtkDialog *dialog;
dialog = g_object_new (GTK_TYPE_DIALOG, NULL);
if (title)
gtk_window_set_title (GTK_WINDOW (dialog), title);
if (parent)
gtk_window_set_transient_for (GTK_WINDOW (dialog), parent);
if (flags & GTK_DIALOG_MODAL)
gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
if (flags & GTK_DIALOG_DESTROY_WITH_PARENT)
gtk_window_set_destroy_with_parent (GTK_WINDOW (dialog), TRUE);
return GTK_WIDGET (dialog);
}
/**
* gtk_dialog_new_with_buttons:
* @title: (allow-none): Title of the dialog, or %NULL
* @parent: (allow-none): Transient parent of the dialog, or %NULL
* @flags: from #GtkDialogFlags
* @first_button_text: (allow-none): stock ID or text to go in first button, or %NULL
* @Varargs: response ID for first button, then additional buttons, ending with %NULL
*
* Creates a new #GtkDialog with title @title (or %NULL for the default
* title; see gtk_window_set_title()) and transient parent @parent (or
* %NULL for none; see gtk_window_set_transient_for()). The @flags
* argument can be used to make the dialog modal (#GTK_DIALOG_MODAL)
* and/or to have it destroyed along with its transient parent
* (#GTK_DIALOG_DESTROY_WITH_PARENT). After @flags, button
* text/response ID pairs should be listed, with a %NULL pointer ending
* the list. Button text can be either a stock ID such as
* #GTK_STOCK_OK, or some arbitrary text. A response ID can be
* any positive number, or one of the values in the #GtkResponseType
* enumeration. If the user clicks one of these dialog buttons,
* #GtkDialog will emit the #GtkDialog::response signal with the corresponding
* response ID. If a #GtkDialog receives the #GtkWidget::delete-event signal,
* it will emit ::response with a response ID of #GTK_RESPONSE_DELETE_EVENT.
* However, destroying a dialog does not emit the ::response signal;
* so be careful relying on ::response when using the
* #GTK_DIALOG_DESTROY_WITH_PARENT flag. Buttons are from left to right,
* so the first button in the list will be the leftmost button in the dialog.
*
* Here's a simple example:
* |[
* GtkWidget *dialog = gtk_dialog_new_with_buttons ("My dialog",
* main_app_window,
* GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
* GTK_STOCK_OK,
* GTK_RESPONSE_ACCEPT,
* GTK_STOCK_CANCEL,
* GTK_RESPONSE_REJECT,
* NULL);
* ]|
*
* Return value: a new #GtkDialog
**/
GtkWidget*
gtk_dialog_new_with_buttons (const gchar *title,
GtkWindow *parent,
GtkDialogFlags flags,
const gchar *first_button_text,
...)
{
GtkDialog *dialog;
va_list args;
dialog = GTK_DIALOG (gtk_dialog_new_empty (title, parent, flags));
va_start (args, first_button_text);
gtk_dialog_add_buttons_valist (dialog,
first_button_text,
args);
va_end (args);
return GTK_WIDGET (dialog);
}
static void
response_data_free (gpointer data)
{
g_slice_free (ResponseData, data);
}
static ResponseData*
get_response_data (GtkWidget *widget,
gboolean create)
{
ResponseData *ad = g_object_get_data (G_OBJECT (widget),
"gtk-dialog-response-data");
if (ad == NULL && create)
{
ad = g_slice_new (ResponseData);
g_object_set_data_full (G_OBJECT (widget),
I_("gtk-dialog-response-data"),
ad,
response_data_free);
}
return ad;
}
static void
action_widget_activated (GtkWidget *widget, GtkDialog *dialog)
{
gint response_id;
response_id = gtk_dialog_get_response_for_widget (dialog, widget);
gtk_dialog_response (dialog, response_id);
}
/**
* gtk_dialog_add_action_widget:
* @dialog: a #GtkDialog
* @child: an activatable widget
* @response_id: response ID for @child
*
* Adds an activatable widget to the action area of a #GtkDialog,
* connecting a signal handler that will emit the #GtkDialog::response
* signal on the dialog when the widget is activated. The widget is
* appended to the end of the dialog's action area. If you want to add a
* non-activatable widget, simply pack it into the @action_area field
* of the #GtkDialog struct.
**/
void
gtk_dialog_add_action_widget (GtkDialog *dialog,
GtkWidget *child,
gint response_id)
{
GtkDialogPrivate *priv;
ResponseData *ad;
guint signal_id;
g_return_if_fail (GTK_IS_DIALOG (dialog));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = dialog->priv;
ad = get_response_data (child, TRUE);
ad->response_id = response_id;
if (GTK_IS_BUTTON (child))
signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
else
signal_id = GTK_WIDGET_GET_CLASS (child)->activate_signal;
if (signal_id)
{
GClosure *closure;
closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
G_OBJECT (dialog));
g_signal_connect_closure_by_id (child,
signal_id,
0,
closure,
FALSE);
}
else
g_warning ("Only 'activatable' widgets can be packed into the action area of a GtkDialog");
gtk_box_pack_end (GTK_BOX (priv->action_area),
child,
FALSE, TRUE, 0);
if (response_id == GTK_RESPONSE_HELP)
gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (priv->action_area), child, TRUE);
}
/**
* gtk_dialog_add_button:
* @dialog: a #GtkDialog
* @button_text: text of button, or stock ID
* @response_id: response ID for the button
*
* Adds a button with the given text (or a stock button, if @button_text is a
* stock ID) and sets things up so that clicking the button will emit the
* #GtkDialog::response signal with the given @response_id. The button is
* appended to the end of the dialog's action area. The button widget is
* returned, but usually you don't need it.
*
* Return value: (transfer none): the #GtkButton widget that was added
**/
GtkWidget*
gtk_dialog_add_button (GtkDialog *dialog,
const gchar *button_text,
gint response_id)
{
GtkWidget *button;
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
g_return_val_if_fail (button_text != NULL, NULL);
button = gtk_button_new_from_stock (button_text);
gtk_widget_set_can_default (button, TRUE);
gtk_widget_show (button);
gtk_dialog_add_action_widget (dialog,
button,
response_id);
return button;
}
static void
gtk_dialog_add_buttons_valist (GtkDialog *dialog,
const gchar *first_button_text,
va_list args)
{
const gchar* text;
gint response_id;
g_return_if_fail (GTK_IS_DIALOG (dialog));
if (first_button_text == NULL)
return;
text = first_button_text;
response_id = va_arg (args, gint);
while (text != NULL)
{
gtk_dialog_add_button (dialog, text, response_id);
text = va_arg (args, gchar*);
if (text == NULL)
break;
response_id = va_arg (args, int);
}
}
/**
* gtk_dialog_add_buttons:
* @dialog: a #GtkDialog
* @first_button_text: button text or stock ID
* @Varargs: response ID for first button, then more text-response_id pairs
*
* Adds more buttons, same as calling gtk_dialog_add_button()
* repeatedly. The variable argument list should be %NULL-terminated
* as with gtk_dialog_new_with_buttons(). Each button must have both
* text and response ID.
**/
void
gtk_dialog_add_buttons (GtkDialog *dialog,
const gchar *first_button_text,
...)
{
va_list args;
va_start (args, first_button_text);
gtk_dialog_add_buttons_valist (dialog,
first_button_text,
args);
va_end (args);
}
/**
* gtk_dialog_set_response_sensitive:
* @dialog: a #GtkDialog
* @response_id: a response ID
* @setting: %TRUE for sensitive
*
* Calls <literal>gtk_widget_set_sensitive (widget, @setting)</literal>
* for each widget in the dialog's action area with the given @response_id.
* A convenient way to sensitize/desensitize dialog buttons.
**/
void
gtk_dialog_set_response_sensitive (GtkDialog *dialog,
gint response_id,
gboolean setting)
{
GtkDialogPrivate *priv;
GList *children;
GList *tmp_list;
g_return_if_fail (GTK_IS_DIALOG (dialog));
priv = dialog->priv;
children = gtk_container_get_children (GTK_CONTAINER (priv->action_area));
tmp_list = children;
while (tmp_list != NULL)
{
GtkWidget *widget = tmp_list->data;
ResponseData *rd = get_response_data (widget, FALSE);
if (rd && rd->response_id == response_id)
gtk_widget_set_sensitive (widget, setting);
tmp_list = g_list_next (tmp_list);
}
g_list_free (children);
}
/**
* gtk_dialog_set_default_response:
* @dialog: a #GtkDialog
* @response_id: a response ID
*
* Sets the last widget in the dialog's action area with the given @response_id
* as the default widget for the dialog. Pressing "Enter" normally activates
* the default widget.
**/
void
gtk_dialog_set_default_response (GtkDialog *dialog,
gint response_id)
{
GtkDialogPrivate *priv;
GList *children;
GList *tmp_list;
g_return_if_fail (GTK_IS_DIALOG (dialog));
priv = dialog->priv;
children = gtk_container_get_children (GTK_CONTAINER (priv->action_area));
tmp_list = children;
while (tmp_list != NULL)
{
GtkWidget *widget = tmp_list->data;
ResponseData *rd = get_response_data (widget, FALSE);
if (rd && rd->response_id == response_id)
gtk_widget_grab_default (widget);
tmp_list = g_list_next (tmp_list);
}
g_list_free (children);
}
/**
* gtk_dialog_response:
* @dialog: a #GtkDialog
* @response_id: response ID
*
* Emits the #GtkDialog::response signal with the given response ID.
* Used to indicate that the user has responded to the dialog in some way;
* typically either you or gtk_dialog_run() will be monitoring the
* ::response signal and take appropriate action.
**/
void
gtk_dialog_response (GtkDialog *dialog,
gint response_id)
{
g_return_if_fail (GTK_IS_DIALOG (dialog));
g_signal_emit (dialog,
dialog_signals[RESPONSE],
0,
response_id);
}
typedef struct
{
GtkDialog *dialog;
gint response_id;
GMainLoop *loop;
gboolean destroyed;
} RunInfo;
static void
shutdown_loop (RunInfo *ri)
{
if (g_main_loop_is_running (ri->loop))
g_main_loop_quit (ri->loop);
}
static void
run_unmap_handler (GtkDialog *dialog, gpointer data)
{
RunInfo *ri = data;
shutdown_loop (ri);
}
static void
run_response_handler (GtkDialog *dialog,
gint response_id,
gpointer data)
{
RunInfo *ri;
ri = data;
ri->response_id = response_id;
shutdown_loop (ri);
}
static gint
run_delete_handler (GtkDialog *dialog,
GdkEventAny *event,
gpointer data)
{
RunInfo *ri = data;
shutdown_loop (ri);
return TRUE; /* Do not destroy */
}
static void
run_destroy_handler (GtkDialog *dialog, gpointer data)
{
RunInfo *ri = data;
/* shutdown_loop will be called by run_unmap_handler */
ri->destroyed = TRUE;
}
/**
* gtk_dialog_run:
* @dialog: a #GtkDialog
*
* Blocks in a recursive main loop until the @dialog either emits the
* #GtkDialog::response signal, or is destroyed. If the dialog is
* destroyed during the call to gtk_dialog_run(), gtk_dialog_run() returns
* #GTK_RESPONSE_NONE. Otherwise, it returns the response ID from the
* ::response signal emission.
*
* Before entering the recursive main loop, gtk_dialog_run() calls
* gtk_widget_show() on the dialog for you. Note that you still
* need to show any children of the dialog yourself.
*
* During gtk_dialog_run(), the default behavior of #GtkWidget::delete-event
* is disabled; if the dialog receives ::delete_event, it will not be
* destroyed as windows usually are, and gtk_dialog_run() will return
* #GTK_RESPONSE_DELETE_EVENT. Also, during gtk_dialog_run() the dialog
* will be modal. You can force gtk_dialog_run() to return at any time by
* calling gtk_dialog_response() to emit the ::response signal. Destroying
* the dialog during gtk_dialog_run() is a very bad idea, because your
* post-run code won't know whether the dialog was destroyed or not.
*
* After gtk_dialog_run() returns, you are responsible for hiding or
* destroying the dialog if you wish to do so.
*
* Typical usage of this function might be:
* |[
* gint result = gtk_dialog_run (GTK_DIALOG (dialog));
* switch (result)
* {
* case GTK_RESPONSE_ACCEPT:
* do_application_specific_something ();
* break;
* default:
* do_nothing_since_dialog_was_cancelled ();
* break;
* }
* gtk_widget_destroy (dialog);
* ]|
*
* Note that even though the recursive main loop gives the effect of a
* modal dialog (it prevents the user from interacting with other
* windows in the same window group while the dialog is run), callbacks
* such as timeouts, IO channel watches, DND drops, etc, <emphasis>will</emphasis>
* be triggered during a gtk_dialog_run() call.
*
* Return value: response ID
**/
gint
gtk_dialog_run (GtkDialog *dialog)
{
RunInfo ri = { NULL, GTK_RESPONSE_NONE, NULL, FALSE };
gboolean was_modal;
gulong response_handler;
gulong unmap_handler;
gulong destroy_handler;
gulong delete_handler;
g_return_val_if_fail (GTK_IS_DIALOG (dialog), -1);
g_object_ref (dialog);
was_modal = gtk_window_get_modal (GTK_WINDOW (dialog));
if (!was_modal)
gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
if (!gtk_widget_get_visible (GTK_WIDGET (dialog)))
gtk_widget_show (GTK_WIDGET (dialog));
response_handler =
g_signal_connect (dialog,
"response",
G_CALLBACK (run_response_handler),
&ri);
unmap_handler =
g_signal_connect (dialog,
"unmap",
G_CALLBACK (run_unmap_handler),
&ri);
delete_handler =
g_signal_connect (dialog,
"delete-event",
G_CALLBACK (run_delete_handler),
&ri);
destroy_handler =
g_signal_connect (dialog,
"destroy",
G_CALLBACK (run_destroy_handler),
&ri);
ri.loop = g_main_loop_new (NULL, FALSE);
GDK_THREADS_LEAVE ();
g_main_loop_run (ri.loop);
GDK_THREADS_ENTER ();
g_main_loop_unref (ri.loop);
ri.loop = NULL;
if (!ri.destroyed)
{
if (!was_modal)
gtk_window_set_modal (GTK_WINDOW(dialog), FALSE);
g_signal_handler_disconnect (dialog, response_handler);
g_signal_handler_disconnect (dialog, unmap_handler);
g_signal_handler_disconnect (dialog, delete_handler);
g_signal_handler_disconnect (dialog, destroy_handler);
}
g_object_unref (dialog);
return ri.response_id;
}
/**
* gtk_dialog_get_widget_for_response:
* @dialog: a #GtkDialog
* @response_id: the response ID used by the @dialog widget
*
* Gets the widget button that uses the given response ID in the action area
* of a dialog.
*
* Returns: (transfer none): the @widget button that uses the given
* @response_id, or %NULL.
*
* Since: 2.20
*/
GtkWidget*
gtk_dialog_get_widget_for_response (GtkDialog *dialog,
gint response_id)
{
GtkDialogPrivate *priv;
GList *children;
GList *tmp_list;
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
priv = dialog->priv;
children = gtk_container_get_children (GTK_CONTAINER (priv->action_area));
tmp_list = children;
while (tmp_list != NULL)
{
GtkWidget *widget = tmp_list->data;
ResponseData *rd = get_response_data (widget, FALSE);
if (rd && rd->response_id == response_id)
{
g_list_free (children);
return widget;
}
tmp_list = g_list_next (tmp_list);
}
g_list_free (children);
return NULL;
}
/**
* gtk_dialog_get_response_for_widget:
* @dialog: a #GtkDialog
* @widget: a widget in the action area of @dialog
*
* Gets the response id of a widget in the action area
* of a dialog.
*
* Returns: the response id of @widget, or %GTK_RESPONSE_NONE
* if @widget doesn't have a response id set.
*
* Since: 2.8
*/
gint
gtk_dialog_get_response_for_widget (GtkDialog *dialog,
GtkWidget *widget)
{
ResponseData *rd;
rd = get_response_data (widget, FALSE);
if (!rd)
return GTK_RESPONSE_NONE;
else
return rd->response_id;
}
/**
* gtk_alternative_dialog_button_order:
* @screen: (allow-none): a #GdkScreen, or %NULL to use the default screen
*
* Returns %TRUE if dialogs are expected to use an alternative
* button order on the screen @screen. See
* gtk_dialog_set_alternative_button_order() for more details
* about alternative button order.
*
* If you need to use this function, you should probably connect
* to the ::notify:gtk-alternative-button-order signal on the
* #GtkSettings object associated to @screen, in order to be
* notified if the button order setting changes.
*
* Returns: Whether the alternative button order should be used
*
* Since: 2.6
*/
gboolean
gtk_alternative_dialog_button_order (GdkScreen *screen)
{
GtkSettings *settings;
gboolean result;
if (screen)
settings = gtk_settings_get_for_screen (screen);
else
settings = gtk_settings_get_default ();
g_object_get (settings,
"gtk-alternative-button-order", &result, NULL);
return result;
}
static void
gtk_dialog_set_alternative_button_order_valist (GtkDialog *dialog,
gint first_response_id,
va_list args)
{
GtkDialogPrivate *priv = dialog->priv;
GtkWidget *child;
gint response_id;
gint position;
response_id = first_response_id;
position = 0;
while (response_id != -1)
{
/* reorder child with response_id to position */
child = dialog_find_button (dialog, response_id);
gtk_box_reorder_child (GTK_BOX (priv->action_area), child, position);
response_id = va_arg (args, gint);
position++;
}
}
/**
* gtk_dialog_set_alternative_button_order:
* @dialog: a #GtkDialog
* @first_response_id: a response id used by one @dialog's buttons
* @Varargs: a list of more response ids of @dialog's buttons, terminated by -1
*
* Sets an alternative button order. If the
* #GtkSettings:gtk-alternative-button-order setting is set to %TRUE,
* the dialog buttons are reordered according to the order of the
* response ids passed to this function.
*
* By default, GTK+ dialogs use the button order advocated by the Gnome
* <ulink url="http://library.gnome.org/devel/hig-book/stable/">Human
* Interface Guidelines</ulink> with the affirmative button at the far
* right, and the cancel button left of it. But the builtin GTK+ dialogs
* and #GtkMessageDialog<!-- -->s do provide an alternative button order,
* which is more suitable on some platforms, e.g. Windows.
*
* Use this function after adding all the buttons to your dialog, as the
* following example shows:
* |[
* cancel_button = gtk_dialog_add_button (GTK_DIALOG (dialog),
* GTK_STOCK_CANCEL,
* GTK_RESPONSE_CANCEL);
*
* ok_button = gtk_dialog_add_button (GTK_DIALOG (dialog),
* GTK_STOCK_OK,
* GTK_RESPONSE_OK);
*
* gtk_widget_grab_default (ok_button);
*
* help_button = gtk_dialog_add_button (GTK_DIALOG (dialog),
* GTK_STOCK_HELP,
* GTK_RESPONSE_HELP);
*
* gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
* GTK_RESPONSE_OK,
* GTK_RESPONSE_CANCEL,
* GTK_RESPONSE_HELP,
* -1);
* ]|
*
* Since: 2.6
*/
void
gtk_dialog_set_alternative_button_order (GtkDialog *dialog,
gint first_response_id,
...)
{
GdkScreen *screen;
va_list args;
g_return_if_fail (GTK_IS_DIALOG (dialog));
screen = gtk_widget_get_screen (GTK_WIDGET (dialog));
if (!gtk_alternative_dialog_button_order (screen))
return;
va_start (args, first_response_id);
gtk_dialog_set_alternative_button_order_valist (dialog,
first_response_id,
args);
va_end (args);
}
/**
* gtk_dialog_set_alternative_button_order_from_array:
* @dialog: a #GtkDialog
* @n_params: the number of response ids in @new_order
* @new_order: (array length=n_params): an array of response ids of
* @dialog's buttons
*
* Sets an alternative button order. If the
* #GtkSettings:gtk-alternative-button-order setting is set to %TRUE,
* the dialog buttons are reordered according to the order of the
* response ids in @new_order.
*
* See gtk_dialog_set_alternative_button_order() for more information.
*
* This function is for use by language bindings.
*
* Since: 2.6
*/
void
gtk_dialog_set_alternative_button_order_from_array (GtkDialog *dialog,
gint n_params,
gint *new_order)
{
GtkDialogPrivate *priv = dialog->priv;
GdkScreen *screen;
GtkWidget *child;
gint position;
g_return_if_fail (GTK_IS_DIALOG (dialog));
g_return_if_fail (new_order != NULL);
screen = gtk_widget_get_screen (GTK_WIDGET (dialog));
if (!gtk_alternative_dialog_button_order (screen))
return;
for (position = 0; position < n_params; position++)
{
/* reorder child with response_id to position */
child = dialog_find_button (dialog, new_order[position]);
gtk_box_reorder_child (GTK_BOX (priv->action_area), child, position);
}
}
typedef struct {
gchar *widget_name;
gchar *response_id;
} ActionWidgetInfo;
typedef struct {
GtkDialog *dialog;
GtkBuilder *builder;
GSList *items;
gchar *response;
} ActionWidgetsSubParserData;
static void
attributes_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **names,
const gchar **values,
gpointer user_data,
GError **error)
{
ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
guint i;
if (strcmp (element_name, "action-widget") == 0)
{
for (i = 0; names[i]; i++)
if (strcmp (names[i], "response") == 0)
parser_data->response = g_strdup (values[i]);
}
else if (strcmp (element_name, "action-widgets") == 0)
return;
else
g_warning ("Unsupported tag for GtkDialog: %s\n", element_name);
}
static void
attributes_text_element (GMarkupParseContext *context,
const gchar *text,
gsize text_len,
gpointer user_data,
GError **error)
{
ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
ActionWidgetInfo *item;
if (!parser_data->response)
return;
item = g_new (ActionWidgetInfo, 1);
item->widget_name = g_strndup (text, text_len);
item->response_id = parser_data->response;
parser_data->items = g_slist_prepend (parser_data->items, item);
parser_data->response = NULL;
}
static const GMarkupParser attributes_parser =
{
attributes_start_element,
NULL,
attributes_text_element,
};
static gboolean
gtk_dialog_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
ActionWidgetsSubParserData *parser_data;
if (child)
return FALSE;
if (strcmp (tagname, "action-widgets") == 0)
{
parser_data = g_slice_new0 (ActionWidgetsSubParserData);
parser_data->dialog = GTK_DIALOG (buildable);
parser_data->items = NULL;
*parser = attributes_parser;
*data = parser_data;
return TRUE;
}
return parent_buildable_iface->custom_tag_start (buildable, builder, child,
tagname, parser, data);
}
static void
gtk_dialog_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data)
{
GtkDialog *dialog = GTK_DIALOG (buildable);
GtkDialogPrivate *priv = dialog->priv;
GSList *l;
ActionWidgetsSubParserData *parser_data;
GObject *object;
ResponseData *ad;
guint signal_id;
if (strcmp (tagname, "action-widgets"))
{
parent_buildable_iface->custom_finished (buildable, builder, child,
tagname, user_data);
return;
}
parser_data = (ActionWidgetsSubParserData*)user_data;
parser_data->items = g_slist_reverse (parser_data->items);
for (l = parser_data->items; l; l = l->next)
{
ActionWidgetInfo *item = l->data;
object = gtk_builder_get_object (builder, item->widget_name);
if (!object)
{
g_warning ("Unknown object %s specified in action-widgets of %s",
item->widget_name,
gtk_buildable_get_name (GTK_BUILDABLE (buildable)));
continue;
}
ad = get_response_data (GTK_WIDGET (object), TRUE);
ad->response_id = g_ascii_strtoll (item->response_id, NULL, 10);
if (GTK_IS_BUTTON (object))
signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
else
signal_id = GTK_WIDGET_GET_CLASS (object)->activate_signal;
if (signal_id)
{
GClosure *closure;
closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
G_OBJECT (dialog));
g_signal_connect_closure_by_id (object,
signal_id,
0,
closure,
FALSE);
}
if (ad->response_id == GTK_RESPONSE_HELP)
gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (priv->action_area),
GTK_WIDGET (object), TRUE);
g_free (item->widget_name);
g_free (item->response_id);
g_free (item);
}
g_slist_free (parser_data->items);
g_slice_free (ActionWidgetsSubParserData, parser_data);
}
/**
* gtk_dialog_get_action_area:
* @dialog: a #GtkDialog
*
* Returns the action area of @dialog.
*
* Returns: (transfer none): the action area.
*
* Since: 2.14
**/
GtkWidget *
gtk_dialog_get_action_area (GtkDialog *dialog)
{
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
return dialog->priv->action_area;
}
/**
* gtk_dialog_get_content_area:
* @dialog: a #GtkDialog
*
* Returns the content area of @dialog.
*
* Returns: (transfer none): the content area #GtkBox.
*
* Since: 2.14
**/
GtkWidget *
gtk_dialog_get_content_area (GtkDialog *dialog)
{
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
return dialog->priv->vbox;
}
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