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gtk2/gtk/gtkdialog.c
Matthias Clasen c4513a6737 dialog: Stop using the ::delete-event signal 
We can achieve the desired result with a class handler
and the ::hide-on-close property.
2018-01-16 14:14:09 -05:00

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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, see <http://www.gnu.org/licenses/>.
*/
/*
* 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 "gtkdialogprivate.h"
#include "gtkheaderbar.h"
#include "gtkbbox.h"
#include "gtklabel.h"
#include "gtkmarshalers.h"
#include "gtkbox.h"
#include "gtkboxprivate.h"
#include "gtkcontainerprivate.h"
#include "gtkmain.h"
#include "gtkintl.h"
#include "gtkbindings.h"
#include "gtkprivate.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtksettings.h"
#include "gtktypebuiltins.h"
#include "gtksizegroup.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
* “action area”. 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.
*
* 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.
*
* An example for simple GtkDialog usage:
* |[<!-- language="C" -->
* // Function to open a dialog box with a message
* void
* quick_message (GtkWindow *parent, gchar *message)
* {
* GtkWidget *dialog, *label, *content_area;
* GtkDialogFlags flags;
*
* // Create the widgets
* flags = GTK_DIALOG_DESTROY_WITH_PARENT;
* dialog = gtk_dialog_new_with_buttons ("Message",
* parent,
* flags,
* _("_OK"),
* GTK_RESPONSE_NONE,
* NULL);
* content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
* label = gtk_label_new (message);
*
* // Ensure that the dialog box is destroyed when the user responds
*
* g_signal_connect_swapped (dialog,
* "response",
* G_CALLBACK (gtk_widget_destroy),
* dialog);
*
* // Add the label, and show everything we’ve added
*
* gtk_container_add (GTK_CONTAINER (content_area), label);
* gtk_widget_show (dialog);
* }
* ]|
*
* # GtkDialog as GtkBuildable
*
* The GtkDialog implementation of the #GtkBuildable interface exposes the
* @vbox and @action_area as internal children with the names “vbox” and
* “action_area”.
*
* GtkDialog supports a custom <action-widgets> element, which can contain
* multiple <action-widget> 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). To mark a response
* as default, set the “default“ attribute of the <action-widget> element
* to true.
*
* GtkDialog supports adding action widgets by specifying “action“ as
* the “type“ attribute of a <child> element. The widget will be added
* either to the action area or the headerbar of the dialog, depending
* on the “use-header-bar“ property. The response id has to be associated
* with the action widget using the <action-widgets> element.
*
* An example of a #GtkDialog UI definition fragment:
* |[
* <object class="GtkDialog" id="dialog1">
* <child type="action">
* <object class="GtkButton" id="button_cancel"/>
* </child>
* <child type="action">
* <object class="GtkButton" id="button_ok">
* <property name="can-default">True</property>
* </object>
* </child>
* <action-widgets>
* <action-widget response="cancel">button_cancel</action-widget>
* <action-widget response="ok" default="true">button_ok</action-widget>
* </action-widgets>
* </object>
* ]|
*/
struct _GtkDialogPrivate
{
GtkWidget *vbox;
GtkWidget *headerbar;
GtkWidget *action_area;
GtkWidget *action_box;
GtkSizeGroup *size_group;
gint use_header_bar;
gboolean constructed;
};
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 (GtkWidget *widget,
GdkEventAny *event);
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 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);
static void gtk_dialog_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type);
enum {
PROP_0,
PROP_USE_HEADER_BAR
};
enum {
RESPONSE,
CLOSE,
LAST_SIGNAL
};
static guint dialog_signals[LAST_SIGNAL];
G_DEFINE_TYPE_WITH_CODE (GtkDialog, gtk_dialog, GTK_TYPE_WINDOW,
G_ADD_PRIVATE (GtkDialog)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_dialog_buildable_interface_init))
static void
set_use_header_bar (GtkDialog *dialog,
gint use_header_bar)
{
GtkDialogPrivate *priv = dialog->priv;
if (use_header_bar == -1)
return;
priv->use_header_bar = use_header_bar;
}
/* A convenience helper for built-in dialogs */
void
gtk_dialog_set_use_header_bar_from_setting (GtkDialog *dialog)
{
GtkDialogPrivate *priv = dialog->priv;
g_assert (!priv->constructed);
g_object_get (gtk_widget_get_settings (GTK_WIDGET (dialog)),
"gtk-dialogs-use-header", &priv->use_header_bar,
NULL);
}
static void
gtk_dialog_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkDialog *dialog = GTK_DIALOG (object);
switch (prop_id)
{
case PROP_USE_HEADER_BAR:
set_use_header_bar (dialog, g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_dialog_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkDialog *dialog = GTK_DIALOG (object);
GtkDialogPrivate *priv = dialog->priv;
switch (prop_id)
{
case PROP_USE_HEADER_BAR:
g_value_set_int (value, priv->use_header_bar);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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);
}
typedef struct {
GtkWidget *child;
gint response_id;
} ActionWidgetData;
static void
add_response_data (GtkDialog *dialog,
GtkWidget *child,
gint response_id)
{
ResponseData *ad;
guint signal_id;
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");
}
static void
apply_response_for_header_bar (GtkDialog *dialog,
GtkWidget *child,
gint response_id)
{
GtkDialogPrivate *priv = dialog->priv;
GtkPackType pack;
g_assert (gtk_widget_get_parent (child) == priv->headerbar);
if (response_id == GTK_RESPONSE_CANCEL || response_id == GTK_RESPONSE_HELP)
pack = GTK_PACK_START;
else
pack = GTK_PACK_END;
gtk_container_child_set (GTK_CONTAINER (priv->headerbar), child,
"pack-type", pack,
NULL);
if (response_id == GTK_RESPONSE_CANCEL || response_id == GTK_RESPONSE_CLOSE)
gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (priv->headerbar), FALSE);
}
static void
add_to_header_bar (GtkDialog *dialog,
GtkWidget *child,
gint response_id)
{
GtkDialogPrivate *priv = dialog->priv;
gtk_widget_set_valign (child, GTK_ALIGN_CENTER);
gtk_container_add (GTK_CONTAINER (priv->headerbar), child);
gtk_size_group_add_widget (priv->size_group, child);
apply_response_for_header_bar (dialog, child, response_id);
}
static void
apply_response_for_action_area (GtkDialog *dialog,
GtkWidget *child,
gint response_id)
{
GtkDialogPrivate *priv = dialog->priv;
g_assert (gtk_widget_get_parent (child) == priv->action_area);
if (response_id == GTK_RESPONSE_HELP)
gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (priv->action_area), child, TRUE);
}
static void
add_to_action_area (GtkDialog *dialog,
GtkWidget *child,
gint response_id)
{
GtkDialogPrivate *priv = dialog->priv;
gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
gtk_container_add (GTK_CONTAINER (priv->action_area), child);
apply_response_for_action_area (dialog, child, response_id);
}
static void
update_suggested_action (GtkDialog *dialog)
{
GtkDialogPrivate *priv = dialog->priv;
if (priv->use_header_bar)
{
GList *children, *l;
children = gtk_container_get_children (GTK_CONTAINER (priv->headerbar));
for (l = children; l != NULL; l = l->next)
{
GtkWidget *child = l->data;
GtkStyleContext *context = gtk_widget_get_style_context (child);
if (gtk_style_context_has_class (context, GTK_STYLE_CLASS_DEFAULT))
gtk_style_context_add_class (context, GTK_STYLE_CLASS_SUGGESTED_ACTION);
else
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_SUGGESTED_ACTION);
}
g_list_free (children);
}
}
static void
add_cb (GtkContainer *container,
GtkWidget *widget,
GtkDialog *dialog)
{
GtkDialogPrivate *priv = dialog->priv;
if (priv->use_header_bar)
g_warning ("Content added to the action area of a dialog using header bars");
gtk_widget_set_visible (priv->action_box, TRUE);
}
static void
gtk_dialog_constructed (GObject *object)
{
GtkDialog *dialog = GTK_DIALOG (object);
GtkDialogPrivate *priv = dialog->priv;
G_OBJECT_CLASS (gtk_dialog_parent_class)->constructed (object);
priv->constructed = TRUE;
if (priv->use_header_bar == -1)
priv->use_header_bar = FALSE;
if (priv->use_header_bar)
{
GList *children, *l;
children = gtk_container_get_children (GTK_CONTAINER (priv->action_area));
for (l = children; l != NULL; l = l->next)
{
GtkWidget *child = l->data;
gboolean has_default;
ResponseData *rd;
gint response_id;
has_default = gtk_widget_has_default (child);
rd = get_response_data (child, FALSE);
response_id = rd ? rd->response_id : GTK_RESPONSE_NONE;
g_object_ref (child);
gtk_container_remove (GTK_CONTAINER (priv->action_area), child);
add_to_header_bar (dialog, child, response_id);
g_object_unref (child);
if (has_default)
gtk_widget_grab_default (child);
}
g_list_free (children);
update_suggested_action (dialog);
g_signal_connect (priv->action_area, "add", G_CALLBACK (add_cb), dialog);
}
else
{
gtk_window_set_titlebar (GTK_WINDOW (dialog), NULL);
priv->headerbar = NULL;
}
gtk_widget_set_visible (priv->action_box, !priv->use_header_bar);
}
static void
gtk_dialog_finalize (GObject *obj)
{
GtkDialog *dialog = GTK_DIALOG (obj);
g_object_unref (dialog->priv->size_group);
G_OBJECT_CLASS (gtk_dialog_parent_class)->finalize (obj);
}
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);
gobject_class->constructed = gtk_dialog_constructed;
gobject_class->set_property = gtk_dialog_set_property;
gobject_class->get_property = gtk_dialog_get_property;
gobject_class->finalize = gtk_dialog_finalize;
widget_class->map = gtk_dialog_map;
widget_class->delete_event = gtk_dialog_delete_event;
gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_DIALOG);
class->close = gtk_dialog_close;
/**
* 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,
NULL,
G_TYPE_NONE, 1,
G_TYPE_INT);
/**
* GtkDialog::close:
*
* The ::close signal is a
* [keybinding signal][GtkBindingSignal]
* 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,
NULL,
G_TYPE_NONE, 0);
/**
* GtkDialog:use-header-bar:
*
* %TRUE if the dialog uses a #GtkHeaderBar for action buttons
* instead of the action-area.
*
* For technical reasons, this property is declared as an integer
* property, but you should only set it to %TRUE or %FALSE.
*
* Since: 3.12
*/
g_object_class_install_property (gobject_class,
PROP_USE_HEADER_BAR,
g_param_spec_int ("use-header-bar",
P_("Use Header Bar"),
P_("Use Header Bar for actions."),
-1, 1, -1,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0, "close", 0);
/* Bind class to template
*/
gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkdialog.ui");
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, vbox);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, headerbar);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, action_area);
gtk_widget_class_bind_template_child_private (widget_class, GtkDialog, action_box);
gtk_widget_class_set_css_name (widget_class, I_("dialog"));
}
static void
gtk_dialog_init (GtkDialog *dialog)
{
dialog->priv = gtk_dialog_get_instance_private (dialog);
dialog->priv->use_header_bar = -1;
dialog->priv->size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
gtk_widget_init_template (GTK_WIDGET (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->custom_tag_start = gtk_dialog_buildable_custom_tag_start;
iface->custom_finished = gtk_dialog_buildable_custom_finished;
iface->add_child = gtk_dialog_buildable_add_child;
}
static gboolean
gtk_dialog_delete_event (GtkWidget *widget,
GdkEventAny *event)
{
/* emit response signal, this will shut down the loop if we are in gtk_dialog_run */
gtk_dialog_response (GTK_DIALOG (widget), GTK_RESPONSE_DELETE_EVENT);
return GTK_WIDGET_CLASS (gtk_dialog_parent_class)->delete_event (widget, event);
}
static GList *
get_action_children (GtkDialog *dialog)
{
GtkDialogPrivate *priv = dialog->priv;
GList *children;
if (priv->constructed && priv->use_header_bar)
children = gtk_container_get_children (GTK_CONTAINER (priv->headerbar));
else
children = gtk_container_get_children (GTK_CONTAINER (priv->action_area));
return children;
}
/* 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);
if (gtk_window_get_transient_for (window) == NULL)
g_message ("GtkDialog mapped without a transient parent. This is discouraged.");
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 = get_action_children (dialog);
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_close (GtkDialog *dialog)
{
gtk_window_close (GTK_WINDOW (dialog));
}
/**
* 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,
"use-header-bar", (flags & GTK_DIALOG_USE_HEADER_BAR) != 0,
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): text to go in first button, or %NULL
* @...: 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 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 a delete event,
* 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:
* |[<!-- language="C" -->
* GtkWidget *main_app_window; // Window the dialog should show up on
* GtkWidget *dialog;
* GtkDialogFlags flags = GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT;
* dialog = gtk_dialog_new_with_buttons ("My dialog",
* main_app_window,
* flags,
* _("_OK"),
* GTK_RESPONSE_ACCEPT,
* _("_Cancel"),
* GTK_RESPONSE_REJECT,
* NULL);
* ]|
*
* Returns: 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;
}
/**
* 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 = dialog->priv;
g_return_if_fail (GTK_IS_DIALOG (dialog));
g_return_if_fail (GTK_IS_WIDGET (child));
add_response_data (dialog, child, response_id);
if (priv->constructed && priv->use_header_bar)
{
add_to_header_bar (dialog, child, response_id);
if (gtk_widget_has_default (child))
{
gtk_widget_grab_default (child);
update_suggested_action (dialog);
}
}
else
add_to_action_area (dialog, child, response_id);
}
/**
* gtk_dialog_add_button:
* @dialog: a #GtkDialog
* @button_text: text of button
* @response_id: response ID for the button
*
* Adds a button with the given text 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.
*
* Returns: (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_with_label (button_text);
gtk_button_set_use_underline (GTK_BUTTON (button), TRUE);
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
* @...: 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 `gtk_widget_set_sensitive (widget, @setting)`
* 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)
{
GList *children;
GList *tmp_list;
g_return_if_fail (GTK_IS_DIALOG (dialog));
children = get_action_children (dialog);
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 = tmp_list->next;
}
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)
{
GList *children;
GList *tmp_list;
g_return_if_fail (GTK_IS_DIALOG (dialog));
children = get_action_children (dialog);
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 = tmp_list->next;
}
g_list_free (children);
if (dialog->priv->use_header_bar)
update_suggested_action (dialog);
}
/**
* 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 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 delete events
* is disabled; if the dialog receives a 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:
* |[<!-- language="C" -->
* GtkWidget *dialog = gtk_dialog_new ();
* // Set up dialog...
*
* int 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, will
* be triggered during a gtk_dialog_run() call.
*
* Returns: response ID
**/
gint
gtk_dialog_run (GtkDialog *dialog)
{
RunInfo ri = { NULL, GTK_RESPONSE_NONE, NULL, FALSE };
gboolean was_modal;
gboolean was_hide_on_close;
gulong response_handler;
gulong unmap_handler;
gulong destroy_handler;
g_return_val_if_fail (GTK_IS_DIALOG (dialog), -1);
g_object_ref (dialog);
was_modal = gtk_window_get_modal (GTK_WINDOW (dialog));
gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
was_hide_on_close = gtk_window_get_hide_on_close (GTK_WINDOW (dialog));
gtk_window_set_hide_on_close (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);
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)
{
gtk_window_set_modal (GTK_WINDOW (dialog), was_modal);
gtk_window_set_hide_on_close (GTK_WINDOW (dialog), was_hide_on_close);
g_signal_handler_disconnect (dialog, response_handler);
g_signal_handler_disconnect (dialog, unmap_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: (nullable) (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)
{
GList *children;
GList *tmp_list;
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
children = get_action_children (dialog);
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 = tmp_list->next;
}
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;
}
typedef struct {
gchar *widget_name;
gint response_id;
gboolean is_default;
gint line;
gint col;
} ActionWidgetInfo;
typedef struct {
GtkDialog *dialog;
GtkBuilder *builder;
GSList *items;
gint response_id;
gboolean is_default;
gboolean is_text;
GString *string;
gboolean in_action_widgets;
gint line;
gint col;
} SubParserData;
static void
free_action_widget_info (gpointer data)
{
ActionWidgetInfo *item = data;
g_free (item->widget_name);
g_free (item);
}
static void
parser_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **names,
const gchar **values,
gpointer user_data,
GError **error)
{
SubParserData *data = (SubParserData*)user_data;
if (strcmp (element_name, "action-widget") == 0)
{
const gchar *response;
gboolean is_default = FALSE;
GValue gvalue = G_VALUE_INIT;
if (!_gtk_builder_check_parent (data->builder, context, "action-widgets", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "response", &response,
G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "default", &is_default,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
if (!gtk_builder_value_from_string_type (data->builder, GTK_TYPE_RESPONSE_TYPE, response, &gvalue, error))
{
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
data->response_id = g_value_get_enum (&gvalue);
data->is_default = is_default;
data->is_text = TRUE;
g_string_set_size (data->string, 0);
g_markup_parse_context_get_position (context, &data->line, &data->col);
}
else if (strcmp (element_name, "action-widgets") == 0)
{
if (!_gtk_builder_check_parent (data->builder, context, "object", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_INVALID, NULL, NULL,
G_MARKUP_COLLECT_INVALID))
_gtk_builder_prefix_error (data->builder, context, error);
data->in_action_widgets = TRUE;
}
else
{
_gtk_builder_error_unhandled_tag (data->builder, context,
"GtkDialog", element_name,
error);
}
}
static void
parser_text_element (GMarkupParseContext *context,
const gchar *text,
gsize text_len,
gpointer user_data,
GError **error)
{
SubParserData *data = (SubParserData*)user_data;
if (data->is_text)
g_string_append_len (data->string, text, text_len);
}
static void
parser_end_element (GMarkupParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error)
{
SubParserData *data = (SubParserData*)user_data;
if (data->is_text)
{
ActionWidgetInfo *item;
item = g_new (ActionWidgetInfo, 1);
item->widget_name = g_strdup (data->string->str);
item->response_id = data->response_id;
item->is_default = data->is_default;
item->line = data->line;
item->col = data->col;
data->items = g_slist_prepend (data->items, item);
data->is_default = FALSE;
data->is_text = FALSE;
}
}
static const GMarkupParser sub_parser =
{
parser_start_element,
parser_end_element,
parser_text_element,
};
static gboolean
gtk_dialog_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *parser_data)
{
SubParserData *data;
if (child)
return FALSE;
if (strcmp (tagname, "action-widgets") == 0)
{
data = g_slice_new0 (SubParserData);
data->dialog = GTK_DIALOG (buildable);
data->builder = builder;
data->string = g_string_new ("");
data->items = NULL;
data->in_action_widgets = FALSE;
*parser = sub_parser;
*parser_data = data;
return TRUE;
}
return parent_buildable_iface->custom_tag_start (buildable, builder, child,
tagname, parser, 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;
SubParserData *data;
GObject *object;
ResponseData *ad;
guint signal_id;
if (strcmp (tagname, "action-widgets") != 0)
{
parent_buildable_iface->custom_finished (buildable, builder, child,
tagname, user_data);
return;
}
data = (SubParserData*)user_data;
data->items = g_slist_reverse (data->items);
for (l = data->items; l; l = l->next)
{
ActionWidgetInfo *item = l->data;
gboolean is_action;
object = _gtk_builder_lookup_object (builder, item->widget_name, item->line, item->col);
if (!object)
continue;
/* If the widget already has reponse data at this point, it
* was either added by gtk_dialog_add_action_widget(), or via
* <child type="action"> or by moving an action area child
* to the header bar. In these cases, apply placement heuristics
* based on the response id.
*/
is_action = get_response_data (GTK_WIDGET (object), FALSE) != NULL;
ad = get_response_data (GTK_WIDGET (object), TRUE);
ad->response_id = item->response_id;
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 && !is_action)
{
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 (gtk_widget_get_parent (GTK_WIDGET (object)) == priv->action_area)
{
apply_response_for_action_area (dialog, GTK_WIDGET (object), ad->response_id);
}
else if (gtk_widget_get_parent (GTK_WIDGET (object)) == priv->headerbar)
{
if (is_action)
apply_response_for_header_bar (dialog, GTK_WIDGET (object), ad->response_id);
}
if (item->is_default)
gtk_widget_grab_default (GTK_WIDGET (object));
}
g_slist_free_full (data->items, free_action_widget_info);
g_string_free (data->string, TRUE);
g_slice_free (SubParserData, data);
update_suggested_action (dialog);
}
static void
gtk_dialog_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
GtkDialog *dialog = GTK_DIALOG (buildable);
GtkDialogPrivate *priv = dialog->priv;
if (type == NULL)
gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
else if (g_str_equal (type, "titlebar"))
{
priv->headerbar = GTK_WIDGET (child);
gtk_window_set_titlebar (GTK_WINDOW (buildable), priv->headerbar);
}
else if (g_str_equal (type, "action"))
gtk_dialog_add_action_widget (GTK_DIALOG (buildable), GTK_WIDGET (child), GTK_RESPONSE_NONE);
else
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (buildable, type);
}
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_header_bar:
* @dialog: a #GtkDialog
*
* Returns the header bar of @dialog. Note that the
* headerbar is only used by the dialog if the
* #GtkDialog:use-header-bar property is %TRUE.
*
* Returns: (transfer none): the header bar
*
* Since: 3.12
*/
GtkWidget *
gtk_dialog_get_header_bar (GtkDialog *dialog)
{
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
return dialog->priv->headerbar;
}
/**
* gtk_dialog_get_content_area:
* @dialog: a #GtkDialog
*
* Returns the content area of @dialog.
*
* Returns: (type Gtk.Box) (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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