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gtk2/gtk/gtkinfobar.c
Emmanuele Bassi c63087a563 Remove ATK 
To build a better world sometimes means having to tear the old one down.
        -- Alexander Pierce, "Captain America: The Winter Soldier"

ATK served us well for nearly 20 years, but the world has changed, and
GTK has changed with it. Now ATK is mostly a hindrance towards improving
the accessibility stack:

 - it maps to a very specific implementation, AT-SPI, which is Linux and
   Unix specific
 - it requires implementing the same functionality in three different
   layers of the stack: AT-SPI, ATK, and GTK
 - only GTK uses it; every other Linux and Unix toolkit and application
   talks to AT-SPI directly, including assistive technologies

Sadly, we cannot incrementally port GTK to a new accessibility stack;
since ATK insulates us entirely from the underlying implementation, we
cannot replace it piecemeal. Instead, we're going to remove everything
and then incrementally build on a clean slate:

 - add an "accessible" interface, implemented by GTK objects directly,
   which describe the accessible role and state changes for every UI
   element
 - add an "assistive technology context" to proxy a native accessibility
   API, and assign it to every widget
 - implement the AT context depending on the platform

For more information, see: https://gitlab.gnome.org/GNOME/gtk/-/issues/2833
2020-07-26 20:31:14 +01:00

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/*
* gtkinfobar.c
* This file is part of GTK+
*
* Copyright (C) 2005 - Paolo Maggi
*
* 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 gedit Team, 2005. See the AUTHORS file for a
* list of people on the gtk Team.
* See the gedit ChangeLog files for a list of changes.
*
* Modified by the GTK+ team, 2008-2009.
*/
#include "config.h"
#include <stdlib.h>
#include "gtkinfobar.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtkbox.h"
#include "gtklabel.h"
#include "gtkbutton.h"
#include "gtkenums.h"
#include "gtkdialog.h"
#include "gtkrevealer.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkorientable.h"
#include "gtkstylecontext.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetprivate.h"
#include "gtkbinlayout.h"
#include "gtkgestureclick.h"
/**
* SECTION:gtkinfobar
* @short_description: Report important messages to the user
* @include: gtk/gtk.h
* @see_also: #GtkStatusbar, #GtkMessageDialog
*
* #GtkInfoBar is a widget that can be used to show messages to
* the user without showing a dialog. It is often temporarily shown
* at the top or bottom of a document. In contrast to #GtkDialog, which
* has an action area at the bottom, #GtkInfoBar has an action area
* at the side.
*
* The API of #GtkInfoBar is very similar to #GtkDialog, allowing you
* to add buttons to the action area with gtk_info_bar_add_button() or
* gtk_info_bar_new_with_buttons(). The sensitivity of action widgets
* can be controlled with gtk_info_bar_set_response_sensitive().
*
* To add widgets to the main content area of a #GtkInfoBar, use
* gtk_info_bar_add_child().
*
* Similar to #GtkMessageDialog, the contents of a #GtkInfoBar can by
* classified as error message, warning, informational message, etc,
* by using gtk_info_bar_set_message_type(). GTK+ may use the message type
* to determine how the message is displayed.
*
* A simple example for using a #GtkInfoBar:
* |[<!-- language="C" -->
* GtkWidget *message_label;
* GtkWidget *widget;
* GtkWidget *grid;
* GtkInfoBar *bar;
*
* // set up info bar
* widget = gtk_info_bar_new ();
* bar = GTK_INFO_BAR (widget);
* grid = gtk_grid_new ();
*
* message_label = gtk_label_new ("");
* gtk_info_bar_add_child (bar, message_label);
* gtk_info_bar_add_button (bar,
* _("_OK"),
* GTK_RESPONSE_OK);
* g_signal_connect (bar,
* "response",
* G_CALLBACK (gtk_widget_hide),
* NULL);
* gtk_grid_attach (GTK_GRID (grid),
* widget,
* 0, 2, 1, 1);
*
* // ...
*
* // show an error message
* gtk_label_set_text (GTK_LABEL (message_label), "An error occurred!");
* gtk_info_bar_set_message_type (bar, GTK_MESSAGE_ERROR);
* gtk_widget_show (bar);
* ]|
*
* # GtkInfoBar as GtkBuildable
*
* The GtkInfoBar implementation of the GtkBuildable interface exposes
* the content area and action area as internal children with the names
* “content_area” and “action_area”.
*
* GtkInfoBar 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).
*
* # CSS nodes
*
* GtkInfoBar has a single CSS node with name infobar. The node may get
* one of the style classes .info, .warning, .error or .question, depending
* on the message type.
* If the info bar shows a close button, that button will have the .close
* style class applied.
*/
enum
{
PROP_0,
PROP_MESSAGE_TYPE,
PROP_SHOW_CLOSE_BUTTON,
PROP_REVEALED,
LAST_PROP
};
typedef struct _GtkInfoBarClass GtkInfoBarClass;
struct _GtkInfoBar
{
GtkWidget parent_instance;
GtkWidget *content_area;
GtkWidget *action_area;
GtkWidget *close_button;
GtkWidget *revealer;
GtkMessageType message_type;
int default_response;
gboolean default_response_sensitive;
};
struct _GtkInfoBarClass
{
GtkWidgetClass parent_class;
void (* response) (GtkInfoBar *info_bar, int response_id);
void (* close) (GtkInfoBar *info_bar);
};
typedef struct _ResponseData ResponseData;
struct _ResponseData
{
int response_id;
gulong handler_id;
};
enum
{
RESPONSE,
CLOSE,
LAST_SIGNAL
};
static GParamSpec *props[LAST_PROP] = { NULL, };
static guint signals[LAST_SIGNAL];
static void gtk_info_bar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_info_bar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_info_bar_buildable_interface_init (GtkBuildableIface *iface);
static gboolean gtk_info_bar_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
GtkBuildableParser *parser,
gpointer *data);
static void gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
gpointer user_data);
static void gtk_info_bar_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type);
G_DEFINE_TYPE_WITH_CODE (GtkInfoBar, gtk_info_bar, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_info_bar_buildable_interface_init))
static void
gtk_info_bar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkInfoBar *info_bar = GTK_INFO_BAR (object);
switch (prop_id)
{
case PROP_MESSAGE_TYPE:
gtk_info_bar_set_message_type (info_bar, g_value_get_enum (value));
break;
case PROP_SHOW_CLOSE_BUTTON:
gtk_info_bar_set_show_close_button (info_bar, g_value_get_boolean (value));
break;
case PROP_REVEALED:
gtk_info_bar_set_revealed (info_bar, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_info_bar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkInfoBar *info_bar = GTK_INFO_BAR (object);
switch (prop_id)
{
case PROP_MESSAGE_TYPE:
g_value_set_enum (value, gtk_info_bar_get_message_type (info_bar));
break;
case PROP_SHOW_CLOSE_BUTTON:
g_value_set_boolean (value, gtk_info_bar_get_show_close_button (info_bar));
break;
case PROP_REVEALED:
g_value_set_boolean (value, gtk_info_bar_get_revealed (info_bar));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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-info-bar-response-data");
if (ad == NULL && create)
{
ad = g_slice_new (ResponseData);
g_object_set_data_full (G_OBJECT (widget),
I_("gtk-info-bar-response-data"),
ad,
response_data_free);
}
return ad;
}
static void
clear_response_data (GtkWidget *widget)
{
ResponseData *data;
data = get_response_data (widget, FALSE);
g_signal_handler_disconnect (widget, data->handler_id);
g_object_set_data (G_OBJECT (widget), "gtk-info-bar-response-data", NULL);
}
static GtkWidget *
find_button (GtkInfoBar *info_bar,
int response_id)
{
GtkWidget *child;
for (child = gtk_widget_get_first_child (info_bar->action_area);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
ResponseData *rd = get_response_data (child, FALSE);
if (rd && rd->response_id == response_id)
return child;
}
return NULL;
}
static void
gtk_info_bar_close (GtkInfoBar *info_bar)
{
if (!gtk_widget_get_visible (info_bar->close_button) &&
!find_button (info_bar, GTK_RESPONSE_CANCEL))
return;
gtk_info_bar_response (GTK_INFO_BAR (info_bar),
GTK_RESPONSE_CANCEL);
}
static void
gtk_info_bar_dispose (GObject *object)
{
GtkInfoBar *self = GTK_INFO_BAR (object);
g_clear_pointer (&self->revealer, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_info_bar_parent_class)->dispose (object);
}
static void
gtk_info_bar_class_init (GtkInfoBarClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->get_property = gtk_info_bar_get_property;
object_class->set_property = gtk_info_bar_set_property;
object_class->dispose = gtk_info_bar_dispose;
klass->close = gtk_info_bar_close;
/**
* GtkInfoBar:message-type:
*
* The type of the message.
*
* The type may be used to determine the appearance of the info bar.
*/
props[PROP_MESSAGE_TYPE] =
g_param_spec_enum ("message-type",
P_("Message Type"),
P_("The type of message"),
GTK_TYPE_MESSAGE_TYPE,
GTK_MESSAGE_INFO,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkInfoBar:show-close-button:
*
* Whether to include a standard close button.
*/
props[PROP_SHOW_CLOSE_BUTTON] =
g_param_spec_boolean ("show-close-button",
P_("Show Close Button"),
P_("Whether to include a standard close button"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT|G_PARAM_EXPLICIT_NOTIFY);
props[PROP_REVEALED] =
g_param_spec_boolean ("revealed",
P_("Reveal"),
P_("Controls whether the info bar shows its contents or not"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, LAST_PROP, props);
/**
* GtkInfoBar::response:
* @info_bar: the object on which the signal is emitted
* @response_id: the response ID
*
* Emitted when an action widget is clicked or the application programmer
* calls gtk_info_bar_response(). The @response_id depends on which action
* widget was clicked.
*/
signals[RESPONSE] = g_signal_new (I_("response"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkInfoBarClass, response),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
G_TYPE_INT);
/**
* GtkInfoBar::close:
*
* The ::close signal is a
* [keybinding signal][GtkBindingSignal]
* which gets emitted when the user uses a keybinding to dismiss
* the info bar.
*
* The default binding for this signal is the Escape key.
*/
signals[CLOSE] = g_signal_new (I_("close"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkInfoBarClass, close),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Escape, 0,
"close",
NULL);
gtk_widget_class_set_css_name (widget_class, I_("infobar"));
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
}
static void
close_button_clicked_cb (GtkWidget *button,
GtkInfoBar *info_bar)
{
gtk_info_bar_response (GTK_INFO_BAR (info_bar), GTK_RESPONSE_CLOSE);
}
static void
click_released_cb (GtkGestureClick *gesture,
guint n_press,
double x,
double y,
GtkInfoBar *info_bar)
{
if (info_bar->default_response && info_bar->default_response_sensitive)
gtk_info_bar_response (info_bar, info_bar->default_response);
}
static void
gtk_info_bar_init (GtkInfoBar *info_bar)
{
GtkWidget *widget = GTK_WIDGET (info_bar);
GtkWidget *main_box;
GtkGesture *gesture;
/* message-type is a CONSTRUCT property, so we init to a value
* different from its default to trigger its property setter
* during construction */
info_bar->message_type = GTK_MESSAGE_OTHER;
info_bar->revealer = gtk_revealer_new ();
gtk_revealer_set_reveal_child (GTK_REVEALER (info_bar->revealer), TRUE);
gtk_widget_set_parent (info_bar->revealer, widget);
main_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_revealer_set_child (GTK_REVEALER (info_bar->revealer), main_box);
info_bar->content_area = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_set_hexpand (info_bar->content_area, TRUE);
gtk_box_append (GTK_BOX (main_box), info_bar->content_area);
info_bar->action_area = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_set_halign (info_bar->action_area, GTK_ALIGN_END);
gtk_widget_set_valign (info_bar->action_area, GTK_ALIGN_CENTER);
gtk_box_append (GTK_BOX (main_box), info_bar->action_area);
info_bar->close_button = gtk_button_new_from_icon_name ("window-close-symbolic");
gtk_widget_hide (info_bar->close_button);
gtk_widget_set_valign (info_bar->close_button, GTK_ALIGN_CENTER);
gtk_widget_add_css_class (info_bar->close_button, "close");
gtk_box_append (GTK_BOX (main_box), info_bar->close_button);
g_signal_connect (info_bar->close_button, "clicked",
G_CALLBACK (close_button_clicked_cb), info_bar);
gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), GDK_BUTTON_PRIMARY);
g_signal_connect (gesture, "released", G_CALLBACK (click_released_cb), widget);
gtk_widget_add_controller (widget, GTK_EVENT_CONTROLLER (gesture));
}
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_info_bar_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_info_bar_buildable_add_child;
iface->custom_tag_start = gtk_info_bar_buildable_custom_tag_start;
iface->custom_finished = gtk_info_bar_buildable_custom_finished;
}
static int
get_response_for_widget (GtkInfoBar *info_bar,
GtkWidget *widget)
{
ResponseData *rd;
rd = get_response_data (widget, FALSE);
if (!rd)
return GTK_RESPONSE_NONE;
else
return rd->response_id;
}
static void
action_widget_activated (GtkWidget *widget,
GtkInfoBar *info_bar)
{
int response_id;
response_id = get_response_for_widget (info_bar, widget);
gtk_info_bar_response (info_bar, response_id);
}
/**
* gtk_info_bar_add_action_widget:
* @info_bar: a #GtkInfoBar
* @child: an activatable widget
* @response_id: response ID for @child
*
* Add an activatable widget to the action area of a #GtkInfoBar,
* connecting a signal handler that will emit the #GtkInfoBar::response
* signal on the message area when the widget is activated. The widget
* is appended to the end of the message areas action area.
*/
void
gtk_info_bar_add_action_widget (GtkInfoBar *info_bar,
GtkWidget *child,
int response_id)
{
ResponseData *ad;
guint signal_id;
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
g_return_if_fail (GTK_IS_WIDGET (child));
ad = get_response_data (child, TRUE);
G_DEBUG_HERE();
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 (info_bar));
ad->handler_id = 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 GtkInfoBar");
gtk_box_append (GTK_BOX (info_bar->action_area), child);
}
/**
* gtk_info_bar_remove_action_widget:
* @info_bar: a #GtkInfoBar
* @widget: an action widget to remove
*
* Removes a widget from the action area of @info_bar, after
* it been put there by a call to gtk_info_bar_add_action_widget()
* or gtk_info_bar_add_button().
*/
void
gtk_info_bar_remove_action_widget (GtkInfoBar *info_bar,
GtkWidget *widget)
{
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (gtk_widget_get_parent (widget) == info_bar->action_area);
clear_response_data (widget);
gtk_box_remove (GTK_BOX (info_bar->action_area), widget);
}
/**
* gtk_info_bar_add_button:
* @info_bar: a #GtkInfoBar
* @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 “response” signal with the given
* response_id. The button is appended to the end of the info bars's
* action area. The button widget is returned, but usually you don't
* need it.
*
* Returns: (transfer none) (type Gtk.Button): the #GtkButton widget
* that was added
*/
GtkWidget*
gtk_info_bar_add_button (GtkInfoBar *info_bar,
const char *button_text,
int response_id)
{
GtkWidget *button;
g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), 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_show (button);
gtk_info_bar_add_action_widget (info_bar, button, response_id);
return button;
}
static void
add_buttons_valist (GtkInfoBar *info_bar,
const char *first_button_text,
va_list args)
{
const char * text;
int response_id;
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
if (first_button_text == NULL)
return;
text = first_button_text;
response_id = va_arg (args, int);
while (text != NULL)
{
gtk_info_bar_add_button (info_bar, text, response_id);
text = va_arg (args, char *);
if (text == NULL)
break;
response_id = va_arg (args, int);
}
}
/**
* gtk_info_bar_add_buttons:
* @info_bar: a #GtkInfoBar
* @first_button_text: button text
* @...: response ID for first button, then more text-response_id pairs,
* ending with %NULL
*
* Adds more buttons, same as calling gtk_info_bar_add_button()
* repeatedly. The variable argument list should be %NULL-terminated
* as with gtk_info_bar_new_with_buttons(). Each button must have both
* text and response ID.
*/
void
gtk_info_bar_add_buttons (GtkInfoBar *info_bar,
const char *first_button_text,
...)
{
va_list args;
va_start (args, first_button_text);
add_buttons_valist (info_bar, first_button_text, args);
va_end (args);
}
/**
* gtk_info_bar_new:
*
* Creates a new #GtkInfoBar object.
*
* Returns: a new #GtkInfoBar object
*/
GtkWidget *
gtk_info_bar_new (void)
{
return g_object_new (GTK_TYPE_INFO_BAR, NULL);
}
/**
* gtk_info_bar_new_with_buttons:
* @first_button_text: (allow-none): ext to go in first button, or %NULL
* @...: response ID for first button, then additional buttons, ending
* with %NULL
*
* Creates a new #GtkInfoBar with buttons. Button text/response ID
* pairs should be listed, with a %NULL pointer ending the list.
* 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, GtkInfoBar will emit
* the “response” signal with the corresponding response ID.
*
* Returns: a new #GtkInfoBar
*/
GtkWidget*
gtk_info_bar_new_with_buttons (const char *first_button_text,
...)
{
GtkInfoBar *info_bar;
va_list args;
info_bar = GTK_INFO_BAR (gtk_info_bar_new ());
va_start (args, first_button_text);
add_buttons_valist (info_bar, first_button_text, args);
va_end (args);
return GTK_WIDGET (info_bar);
}
static void
update_default_response (GtkInfoBar *info_bar,
int response_id,
gboolean sensitive)
{
info_bar->default_response = response_id;
info_bar->default_response_sensitive = sensitive;
if (response_id && sensitive)
gtk_widget_add_css_class (GTK_WIDGET (info_bar), "action");
else
gtk_widget_remove_css_class (GTK_WIDGET (info_bar), "action");
}
/**
* gtk_info_bar_set_response_sensitive:
* @info_bar: a #GtkInfoBar
* @response_id: a response ID
* @setting: TRUE for sensitive
*
* Calls gtk_widget_set_sensitive (widget, setting) for each
* widget in the info bars’s action area with the given response_id.
* A convenient way to sensitize/desensitize dialog buttons.
*/
void
gtk_info_bar_set_response_sensitive (GtkInfoBar *info_bar,
int response_id,
gboolean setting)
{
GtkWidget *child;
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
for (child = gtk_widget_get_first_child (info_bar->action_area);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
ResponseData *rd = get_response_data (child, FALSE);
if (rd && rd->response_id == response_id)
gtk_widget_set_sensitive (child, setting);
}
if (response_id == info_bar->default_response)
update_default_response (info_bar, response_id, setting);
}
/**
* gtk_info_bar_set_default_response:
* @info_bar: a #GtkInfoBar
* @response_id: a response ID
*
* Sets the last widget in the info bar’s action area with
* the given response_id as the default widget for the dialog.
* Pressing “Enter” normally activates the default widget.
*
* Note that this function currently requires @info_bar to
* be added to a widget hierarchy.
*/
void
gtk_info_bar_set_default_response (GtkInfoBar *info_bar,
int response_id)
{
GtkWidget *child;
GtkWidget *window;
gboolean sensitive = TRUE;
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
window = gtk_widget_get_ancestor (GTK_WIDGET (info_bar), GTK_TYPE_WINDOW);
for (child = gtk_widget_get_first_child (info_bar->action_area);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
ResponseData *rd = get_response_data (child, FALSE);
if (rd && rd->response_id == response_id)
{
gtk_window_set_default_widget (GTK_WINDOW (window), child);
sensitive = gtk_widget_get_sensitive (child);
break;
}
}
update_default_response (info_bar, response_id, sensitive);
}
/**
* gtk_info_bar_response:
* @info_bar: a #GtkInfoBar
* @response_id: a response ID
*
* Emits the “response” signal with the given @response_id.
*/
void
gtk_info_bar_response (GtkInfoBar *info_bar,
int response_id)
{
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
g_signal_emit (info_bar, signals[RESPONSE], 0, response_id);
}
typedef struct
{
char *name;
int response_id;
int line;
int col;
} ActionWidgetInfo;
typedef struct
{
GtkInfoBar *info_bar;
GtkBuilder *builder;
GSList *items;
int response_id;
gboolean is_text;
GString *string;
int line;
int col;
} SubParserData;
static void
action_widget_info_free (gpointer data)
{
ActionWidgetInfo *item = data;
g_free (item->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;
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_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_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);
}
else
{
_gtk_builder_error_unhandled_tag (data->builder, context,
"GtkInfoBar", 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->name = g_strdup (data->string->str);
item->response_id = data->response_id;
item->line = data->line;
item->col = data->col;
data->items = g_slist_prepend (data->items, item);
data->is_text = FALSE;
}
}
static const GtkBuildableParser sub_parser =
{
parser_start_element,
parser_end_element,
parser_text_element,
};
gboolean
gtk_info_bar_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
GtkBuildableParser *parser,
gpointer *parser_data)
{
SubParserData *data;
if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
tagname, parser, parser_data))
return TRUE;
if (!child && strcmp (tagname, "action-widgets") == 0)
{
data = g_slice_new0 (SubParserData);
data->info_bar = GTK_INFO_BAR (buildable);
data->builder = builder;
data->string = g_string_new ("");
data->items = NULL;
*parser = sub_parser;
*parser_data = data;
return TRUE;
}
return FALSE;
}
static void
gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
gpointer user_data)
{
GtkInfoBar *info_bar = GTK_INFO_BAR (buildable);
GSList *l;
SubParserData *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;
}
data = (SubParserData*)user_data;
data->items = g_slist_reverse (data->items);
for (l = data->items; l; l = l->next)
{
ActionWidgetInfo *item = l->data;
object = _gtk_builder_lookup_object (builder, item->name, item->line, item->col);
if (!object)
continue;
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)
{
GClosure *closure;
closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
G_OBJECT (info_bar));
g_signal_connect_closure_by_id (object, signal_id, 0, closure, FALSE);
}
}
g_slist_free_full (data->items, action_widget_info_free);
g_string_free (data->string, TRUE);
g_slice_free (SubParserData, data);
}
static void
gtk_info_bar_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
GtkInfoBar *info_bar = GTK_INFO_BAR (buildable);
if (!type && GTK_IS_WIDGET (child))
gtk_info_bar_add_child (GTK_INFO_BAR (info_bar), GTK_WIDGET (child));
else if (g_strcmp0 (type, "action") == 0)
gtk_box_append (GTK_BOX (info_bar->action_area), GTK_WIDGET (child));
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
/**
* gtk_info_bar_set_message_type:
* @info_bar: a #GtkInfoBar
* @message_type: a #GtkMessageType
*
* Sets the message type of the message area.
*
* GTK+ uses this type to determine how the message is displayed.
*/
void
gtk_info_bar_set_message_type (GtkInfoBar *info_bar,
GtkMessageType message_type)
{
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
if (info_bar->message_type != message_type)
{
const char *type_class[] = {
GTK_STYLE_CLASS_INFO,
GTK_STYLE_CLASS_WARNING,
GTK_STYLE_CLASS_QUESTION,
GTK_STYLE_CLASS_ERROR,
NULL
};
if (type_class[info_bar->message_type])
gtk_widget_remove_css_class (GTK_WIDGET (info_bar), type_class[info_bar->message_type]);
info_bar->message_type = message_type;
gtk_widget_queue_draw (GTK_WIDGET (info_bar));
if (type_class[info_bar->message_type])
gtk_widget_add_css_class (GTK_WIDGET (info_bar), type_class[info_bar->message_type]);
g_object_notify_by_pspec (G_OBJECT (info_bar), props[PROP_MESSAGE_TYPE]);
}
}
/**
* gtk_info_bar_get_message_type:
* @info_bar: a #GtkInfoBar
*
* Returns the message type of the message area.
*
* Returns: the message type of the message area.
*/
GtkMessageType
gtk_info_bar_get_message_type (GtkInfoBar *info_bar)
{
g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), GTK_MESSAGE_OTHER);
return info_bar->message_type;
}
/**
* gtk_info_bar_set_show_close_button:
* @info_bar: a #GtkInfoBar
* @setting: %TRUE to include a close button
*
* If true, a standard close button is shown. When clicked it emits
* the response %GTK_RESPONSE_CLOSE.
*/
void
gtk_info_bar_set_show_close_button (GtkInfoBar *info_bar,
gboolean setting)
{
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
if (setting == gtk_info_bar_get_show_close_button (info_bar))
return;
gtk_widget_set_visible (info_bar->close_button, setting);
g_object_notify_by_pspec (G_OBJECT (info_bar), props[PROP_SHOW_CLOSE_BUTTON]);
}
/**
* gtk_info_bar_get_show_close_button:
* @info_bar: a #GtkInfoBar
*
* Returns whether the widget will display a standard close button.
*
* Returns: %TRUE if the widget displays standard close button
*/
gboolean
gtk_info_bar_get_show_close_button (GtkInfoBar *info_bar)
{
g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), FALSE);
return gtk_widget_get_visible (info_bar->close_button);
}
/**
* gtk_info_bar_set_revealed:
* @info_bar: a #GtkInfoBar
* @revealed: The new value of the property
*
* Sets the #GtkInfoBar:revealed property to @revealed. Changing this will make
* @info_bar reveal (%TRUE) or conceal (%FALSE) itself via a sliding transition.
*
* Note: this does not show or hide @info_bar in the #GtkWidget:visible sense,
* so revealing has no effect if #GtkWidget:visible is %FALSE.
*/
void
gtk_info_bar_set_revealed (GtkInfoBar *info_bar,
gboolean revealed)
{
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
if (revealed == gtk_revealer_get_reveal_child (GTK_REVEALER (info_bar->revealer)))
return;
gtk_revealer_set_reveal_child (GTK_REVEALER (info_bar->revealer), revealed);
g_object_notify_by_pspec (G_OBJECT (info_bar), props[PROP_REVEALED]);
}
/**
* gtk_info_bar_get_revealed:
* @info_bar: a #GtkInfoBar
*
* Returns whether the info bar is currently revealed.
*
* Returns: the current value of the #GtkInfoBar:revealed property
*/
gboolean
gtk_info_bar_get_revealed (GtkInfoBar *info_bar)
{
g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), FALSE);
return gtk_revealer_get_reveal_child (GTK_REVEALER (info_bar->revealer));
}
/**
* gtk_info_bar_add_child:
* @info_bar: a #GtkInfoBar
* @widget: the child to be added
*
* Adds a widget to the content area of the info bar.
*/
void
gtk_info_bar_add_child (GtkInfoBar *info_bar,
GtkWidget *widget)
{
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_box_append (GTK_BOX (info_bar->content_area), widget);
}
/**
* gtk_info_bar_remove_child:
* @info_bar: a #GtkInfoBar
* @widget: a child that has been added to the content area
*
* Removes a widget from the content area of the info bar,
* after it has been added with gtk_info_bar_add_child().
*/
void
gtk_info_bar_remove_child (GtkInfoBar *info_bar,
GtkWidget *widget)
{
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_box_remove (GTK_BOX (info_bar->content_area), widget);
}
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