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gtk2/gtk/gtkdialog.c
Matthias Clasen ae7cefd97d Drop style class defines 
We document the supported style classes by name,
not by macro name, and these macros don't really
add any value. Drop them for GTK 4.
2020-08-14 07:03:27 -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, 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 "gtkheaderbarprivate.h"
#include "gtklabel.h"
#include "gtkmarshalers.h"
#include "gtkbox.h"
#include "gtkmain.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtksettings.h"
#include "gtktypebuiltins.h"
#include "gtksizegroup.h"
#include "gtkstylecontext.h"
/**
* SECTION:gtkdialog
* @Short_description: Create popup windows
* @Title: GtkDialog
* @See_also: #GtkBox, #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
* #GtkBox, 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.
*
* 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, char *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_window_destroy),
* dialog);
*
* // Add the label, and show everything we’ve added
*
* gtk_box_append (GTK_BOX (content_area), label);
* gtk_widget_show (dialog);
* }
* ]|
*
* # GtkDialog as GtkBuildable
*
* The GtkDialog implementation of the #GtkBuildable interface exposes the
* @content_area and @action_area as internal children with the names
* “content_area” 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">
* </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>
* ]|
*
* # Accessibility
*
* GtkDialog uses the #GTK_ACCESSIBLE_ROLE_DIALOG role.
*/
typedef struct _ResponseData ResponseData;
typedef struct
{
GtkWidget *headerbar;
GtkWidget *action_area;
GtkWidget *content_area;
GtkWidget *action_box;
GtkSizeGroup *size_group;
int use_header_bar;
gboolean constructed;
ResponseData *action_widgets;
} GtkDialogPrivate;
struct _ResponseData
{
ResponseData *next;
GtkDialog *dialog;
GtkWidget *widget;
int response_id;
};
static void gtk_dialog_add_buttons_valist (GtkDialog *dialog,
const char *first_button_text,
va_list args);
static gboolean gtk_dialog_close_request (GtkWindow *window);
static void gtk_dialog_map (GtkWidget *widget);
static void gtk_dialog_close (GtkDialog *dialog);
static ResponseData * get_response_data (GtkDialog *dialog,
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 char *tagname,
GtkBuildableParser *parser,
gpointer *data);
static void gtk_dialog_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
gpointer user_data);
static void gtk_dialog_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *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,
int use_header_bar)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
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 = gtk_dialog_get_instance_private (dialog);
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 = gtk_dialog_get_instance_private (dialog);
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)
{
int response_id;
response_id = gtk_dialog_get_response_for_widget (dialog, widget);
gtk_dialog_response (dialog, response_id);
}
static void
add_response_data (GtkDialog *dialog,
GtkWidget *child,
int response_id)
{
ResponseData *ad;
guint signal_id;
ad = get_response_data (dialog, 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
add_to_header_bar (GtkDialog *dialog,
GtkWidget *child,
int response_id)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
gtk_widget_set_valign (child, GTK_ALIGN_CENTER);
if (response_id == GTK_RESPONSE_CANCEL || response_id == GTK_RESPONSE_HELP)
gtk_header_bar_pack_start (GTK_HEADER_BAR (priv->headerbar), child);
else
gtk_header_bar_pack_end (GTK_HEADER_BAR (priv->headerbar), child);
gtk_size_group_add_widget (priv->size_group, child);
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
apply_response_for_action_area (GtkDialog *dialog,
GtkWidget *child,
int response_id)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
g_assert (gtk_widget_get_parent (child) == priv->action_area);
}
static void
add_to_action_area (GtkDialog *dialog,
GtkWidget *child,
int response_id)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
gtk_box_append (GTK_BOX (priv->action_area), child);
apply_response_for_action_area (dialog, child, response_id);
}
static void
update_suggested_action (GtkDialog *dialog,
GtkWidget *child)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
if (priv->use_header_bar)
{
if (gtk_widget_has_css_class (child, "default"))
gtk_widget_add_css_class (child, "suggested-action");
else
gtk_widget_remove_css_class (child, "suggested-action");
}
}
static void
gtk_dialog_constructed (GObject *object)
{
GtkDialog *dialog = GTK_DIALOG (object);
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
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;
GtkWidget *child;
children = NULL;
for (child = gtk_widget_get_first_child (priv->action_area);
child != NULL;
child = gtk_widget_get_next_sibling (child))
children = g_list_append (children, child);
for (l = children; l != NULL; l = l->next)
{
gboolean has_default;
ResponseData *rd;
int response_id;
child = l->data;
has_default = gtk_widget_has_default (child);
rd = get_response_data (dialog, child, FALSE);
response_id = rd ? rd->response_id : GTK_RESPONSE_NONE;
g_object_ref (child);
gtk_box_remove (GTK_BOX (priv->action_area), child);
add_to_header_bar (dialog, child, response_id);
g_object_unref (child);
if (has_default)
{
gtk_window_set_default_widget (GTK_WINDOW (dialog), child);
update_suggested_action (dialog, child);
}
}
g_list_free (children);
_gtk_header_bar_track_default_decoration (GTK_HEADER_BAR (priv->headerbar));
}
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);
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
while (priv->action_widgets)
g_object_set_data (G_OBJECT (priv->action_widgets->widget),
"gtk-dialog-response-data", NULL);
g_object_unref (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;
GtkWindowClass *window_class;
gobject_class = G_OBJECT_CLASS (class);
widget_class = GTK_WIDGET_CLASS (class);
window_class = GTK_WINDOW_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;
window_class->close_request = gtk_dialog_close_request;
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.
*/
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));
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_Escape, 0, "close", NULL);
/* 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, headerbar);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, action_area);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, content_area);
gtk_widget_class_bind_template_child_private (widget_class, GtkDialog, action_box);
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_DIALOG);
}
static void
gtk_dialog_init (GtkDialog *dialog)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
gtk_widget_add_css_class (GTK_WIDGET (dialog), "dialog");
priv->use_header_bar = -1;
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_close_request (GtkWindow *window)
{
gtk_dialog_response (GTK_DIALOG (window), GTK_RESPONSE_DELETE_EVENT);
return GTK_WINDOW_CLASS (gtk_dialog_parent_class)->close_request (window);
}
/* 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 = gtk_dialog_get_instance_private (dialog);
ResponseData *rd;
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)
{
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);
default_widget = gtk_window_get_default_widget (window);
for (rd = priv->action_widgets; rd != NULL; rd = rd->next)
{
if ((focus == NULL || rd->widget == focus) &&
rd->widget != default_widget &&
default_widget)
{
gtk_widget_grab_focus (default_widget);
break;
}
}
}
}
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 @content_area 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 char *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" -->
* GtkWindow *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 char *title,
GtkWindow *parent,
GtkDialogFlags flags,
const char *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)
{
ResponseData *ad = data;
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (ad->dialog);
if (priv->action_widgets == ad)
{
priv->action_widgets = ad->next;
}
else
{
ResponseData *prev = priv->action_widgets;
while (prev)
{
if (prev->next == ad)
{
prev->next = ad->next;
break;
}
prev = prev->next;
}
}
g_slice_free (ResponseData, data);
}
static ResponseData *
get_response_data (GtkDialog *dialog,
GtkWidget *widget,
gboolean create)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
ResponseData *ad = g_object_get_data (G_OBJECT (widget),
"gtk-dialog-response-data");
if (ad == NULL && create)
{
ad = g_slice_new (ResponseData);
ad->dialog = dialog;
ad->widget = widget;
g_object_set_data_full (G_OBJECT (widget),
I_("gtk-dialog-response-data"),
ad,
response_data_free);
ad->next = priv->action_widgets;
priv->action_widgets = ad;
}
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,
int response_id)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
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_window_set_default_widget (GTK_WINDOW (dialog), child);
update_suggested_action (dialog, child);
}
}
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 char *button_text,
int 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_dialog_add_action_widget (dialog, button, response_id);
return button;
}
static void
gtk_dialog_add_buttons_valist (GtkDialog *dialog,
const char *first_button_text,
va_list args)
{
const char * text;
int 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, int);
while (text != NULL)
{
gtk_dialog_add_button (dialog, text, response_id);
text = va_arg (args, char *);
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 char *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,
int response_id,
gboolean setting)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
ResponseData *rd;
g_return_if_fail (GTK_IS_DIALOG (dialog));
for (rd = priv->action_widgets; rd != NULL; rd = rd->next)
{
if (rd->response_id == response_id)
gtk_widget_set_sensitive (rd->widget, setting);
}
}
/**
* 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,
int response_id)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
ResponseData *rd;
g_return_if_fail (GTK_IS_DIALOG (dialog));
for (rd = priv->action_widgets; rd != NULL; rd = rd->next)
{
if (rd->response_id == response_id)
{
gtk_window_set_default_widget (GTK_WINDOW (dialog), rd->widget);
update_suggested_action (dialog, rd->widget);
}
}
}
/**
* 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.
**/
void
gtk_dialog_response (GtkDialog *dialog,
int response_id)
{
g_return_if_fail (GTK_IS_DIALOG (dialog));
g_signal_emit (dialog,
dialog_signals[RESPONSE],
0,
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.
*/
GtkWidget*
gtk_dialog_get_widget_for_response (GtkDialog *dialog,
int response_id)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
ResponseData *rd;
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
for (rd = priv->action_widgets; rd != NULL; rd = rd->next)
{
if (rd->response_id == response_id)
return rd->widget;
}
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.
*/
int
gtk_dialog_get_response_for_widget (GtkDialog *dialog,
GtkWidget *widget)
{
ResponseData *rd;
rd = get_response_data (dialog, widget, FALSE);
if (!rd)
return GTK_RESPONSE_NONE;
else
return rd->response_id;
}
typedef struct {
char *widget_name;
int response_id;
gboolean is_default;
int line;
int col;
} ActionWidgetInfo;
typedef struct {
GtkDialog *dialog;
GtkBuilder *builder;
GSList *items;
int response_id;
gboolean is_default;
gboolean is_text;
GString *string;
gboolean in_action_widgets;
int line;
int 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 (GtkBuildableParseContext *context,
const char *element_name,
const char **names,
const char **values,
gpointer user_data,
GError **error)
{
SubParserData *data = (SubParserData*)user_data;
if (strcmp (element_name, "action-widget") == 0)
{
const char *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);
gtk_buildable_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 (GtkBuildableParseContext *context,
const char *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 (GtkBuildableParseContext *context,
const char *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 GtkBuildableParser 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 char *tagname,
GtkBuildableParser *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 char *tagname,
gpointer user_data)
{
GtkDialog *dialog = GTK_DIALOG (buildable);
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
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 response 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 (dialog, GTK_WIDGET (object), FALSE) != NULL;
ad = get_response_data (dialog, 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_ancestor (GTK_WIDGET (object), GTK_TYPE_HEADER_BAR) == priv->headerbar)
{
if (is_action)
{
g_object_ref (object);
gtk_header_bar_remove (GTK_HEADER_BAR (priv->headerbar), GTK_WIDGET (object));
add_to_header_bar (dialog, GTK_WIDGET (object), ad->response_id);
g_object_unref (object);
}
}
if (item->is_default)
{
gtk_window_set_default_widget (GTK_WINDOW (dialog), GTK_WIDGET (object));
update_suggested_action (dialog, GTK_WIDGET (object));
}
}
g_slist_free_full (data->items, free_action_widget_info);
g_string_free (data->string, TRUE);
g_slice_free (SubParserData, data);
}
static void
gtk_dialog_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
GtkDialog *dialog = GTK_DIALOG (buildable);
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
if (type == NULL)
parent_buildable_iface->add_child (buildable, builder, child, type);
else if (g_str_equal (type, "titlebar"))
{
priv->headerbar = GTK_WIDGET (child);
_gtk_header_bar_track_default_decoration (GTK_HEADER_BAR (priv->headerbar));
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)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
return 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: (type Gtk.HeaderBar) (transfer none): the header bar
*/
GtkWidget *
gtk_dialog_get_header_bar (GtkDialog *dialog)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
return 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.
**/
GtkWidget *
gtk_dialog_get_content_area (GtkDialog *dialog)
{
GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog);
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
return priv->content_area;
}
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