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gtk2/gtk/gtkinfobar.c
William Jon McCann 37a8ee6e95 docs: fully break lines in examples 
Try to do a better job of keeping example content
from being too wide. It is often rendered as <pre>
text so the only time we can wrap it is in the source.

It is best to full break lines at all punctuation and
to try to keep the width under 70 chars or so.
2014-02-12 18:42:50 -05:00

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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 "gtkaccessible.h"
#include "gtkbuildable.h"
#include "gtkbbox.h"
#include "gtkbox.h"
#include "gtklabel.h"
#include "gtkbutton.h"
#include "gtkenums.h"
#include "gtkbindings.h"
#include "gtkdialog.h"
#include "gtkrevealer.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkorientable.h"
#include "gtktypebuiltins.h"
#include "deprecated/gtkstock.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 a 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_get_content_area() and add your widgets to the container.
*
* 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" -->
* /&ast; set up info bar &ast;/
* GtkWidget *widget;
* GtkInfoBar *bar;
*
* widget = gtk_info_bar_new ();
* bar = GTK_INFO_BAR (bar);
*
* gtk_widget_set_no_show_all (widget, TRUE);
* message_label = gtk_label_new ("");
* gtk_widget_show (message_label);
* content_area = gtk_info_bar_get_content_area (bar);
* gtk_container_add (GTK_CONTAINER (content_area),
* 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);
*
* /&ast; ... &ast;/
*
* /&ast; show an error message &ast;/
* gtk_label_set_text (GTK_LABEL (message_label), message);
* 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).
*/
enum
{
PROP_0,
PROP_MESSAGE_TYPE,
PROP_SHOW_CLOSE_BUTTON
};
struct _GtkInfoBarPrivate
{
GtkWidget *content_area;
GtkWidget *action_area;
GtkWidget *close_button;
GtkWidget *revealer;
gboolean show_close_button;
GtkMessageType message_type;
};
typedef struct _ResponseData ResponseData;
struct _ResponseData
{
gint response_id;
};
enum
{
RESPONSE,
CLOSE,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
#define ACTION_AREA_DEFAULT_BORDER 5
#define ACTION_AREA_DEFAULT_SPACING 6
#define CONTENT_AREA_DEFAULT_BORDER 8
#define CONTENT_AREA_DEFAULT_SPACING 16
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_get_preferred_width (GtkWidget *widget,
gint *minimum_width,
gint *natural_width);
static void gtk_info_bar_get_preferred_height (GtkWidget *widget,
gint *minimum_height,
gint *natural_height);
static gboolean gtk_info_bar_draw (GtkWidget *widget,
cairo_t *cr);
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 gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data);
G_DEFINE_TYPE_WITH_CODE (GtkInfoBar, gtk_info_bar, GTK_TYPE_BOX,
G_ADD_PRIVATE (GtkInfoBar)
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;
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;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_info_bar_finalize (GObject *object)
{
G_OBJECT_CLASS (gtk_info_bar_parent_class)->finalize (object);
}
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 GtkWidget *
find_button (GtkInfoBar *info_bar,
gint response_id)
{
GList *children, *list;
GtkWidget *child = NULL;
children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
for (list = children; list; list = list->next)
{
ResponseData *rd = get_response_data (list->data, FALSE);
if (rd && rd->response_id == response_id)
{
child = list->data;
break;
}
}
g_list_free (children);
return child;
}
static void
gtk_info_bar_close (GtkInfoBar *info_bar)
{
if (!gtk_widget_get_visible (info_bar->priv->close_button)
&& !find_button (info_bar, GTK_RESPONSE_CANCEL))
return;
gtk_info_bar_response (GTK_INFO_BAR (info_bar),
GTK_RESPONSE_CANCEL);
}
static void
get_padding_and_border (GtkWidget *widget,
GtkBorder *border)
{
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder tmp;
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_padding (context, state, border);
gtk_style_context_get_border (context, state, &tmp);
border->top += tmp.top;
border->right += tmp.right;
border->bottom += tmp.bottom;
border->left += tmp.left;
}
static void
gtk_info_bar_get_preferred_width (GtkWidget *widget,
gint *minimum_width,
gint *natural_width)
{
GtkBorder border;
get_padding_and_border (widget, &border);
GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->get_preferred_width (widget,
minimum_width,
natural_width);
if (minimum_width)
*minimum_width += border.left + border.right;
if (natural_width)
*natural_width += border.left + border.right;
}
static void
gtk_info_bar_get_preferred_height (GtkWidget *widget,
gint *minimum_height,
gint *natural_height)
{
GtkBorder border;
get_padding_and_border (widget, &border);
GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->get_preferred_height (widget,
minimum_height,
natural_height);
if (minimum_height)
*minimum_height += border.top + border.bottom;
if (natural_height)
*natural_height += border.top + border.bottom;
}
static gboolean
gtk_info_bar_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkStyleContext *context;
context = gtk_widget_get_style_context (widget);
gtk_render_background (context, cr, 0, 0,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
gtk_render_frame (context, cr, 0, 0,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->draw (widget, cr);
return FALSE;
}
static void
gtk_info_bar_show (GtkWidget *widget)
{
GtkInfoBarPrivate *priv = GTK_INFO_BAR (widget)->priv;
GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->show (widget);
gtk_revealer_set_reveal_child (GTK_REVEALER (priv->revealer), TRUE);
}
static void
child_revealed (GObject *object, GParamSpec *pspec, gpointer data)
{
GtkWidget *widget = data;
GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->hide (widget);
g_signal_handlers_disconnect_by_func (object, child_revealed, widget);
g_object_notify (G_OBJECT (widget), "visible");
}
static void
gtk_info_bar_hide (GtkWidget *widget)
{
GtkInfoBarPrivate *priv = GTK_INFO_BAR (widget)->priv;
g_signal_connect_object (priv->revealer, "notify::child-revealed",
G_CALLBACK (child_revealed), widget, 0);
gtk_revealer_set_reveal_child (GTK_REVEALER (priv->revealer), FALSE);
}
static void
gtk_info_bar_class_init (GtkInfoBarClass *klass)
{
GtkWidgetClass *widget_class;
GObjectClass *object_class;
GtkBindingSet *binding_set;
widget_class = GTK_WIDGET_CLASS (klass);
object_class = G_OBJECT_CLASS (klass);
object_class->get_property = gtk_info_bar_get_property;
object_class->set_property = gtk_info_bar_set_property;
object_class->finalize = gtk_info_bar_finalize;
widget_class->get_preferred_width = gtk_info_bar_get_preferred_width;
widget_class->get_preferred_height = gtk_info_bar_get_preferred_height;
widget_class->draw = gtk_info_bar_draw;
widget_class->show = gtk_info_bar_show;
widget_class->hide = gtk_info_bar_hide;
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.
*
* Since: 2.18
*/
g_object_class_install_property (object_class,
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));
/**
* GtkInfoBar:show-close-button:
*
* Whether to include a standard close button.
*
* Since: 3.10
*/
g_object_class_install_property (object_class,
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));
/**
* 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_dialog_response(). The @response_id depends on which action
* widget was clicked.
*
* Since: 2.18
*/
signals[RESPONSE] = g_signal_new (I_("response"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkInfoBarClass, response),
NULL, NULL,
g_cclosure_marshal_VOID__INT,
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.
*
* Since: 2.18
*/
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,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkInfoBar:content-area-border:
*
* The width of the border around the content
* content area of the info bar.
*
* Since: 2.18
* Deprecated: 3.6: Use gtk_container_set_border_width()
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("content-area-border",
P_("Content area border"),
P_("Width of border around the content area"),
0,
G_MAXINT,
CONTENT_AREA_DEFAULT_BORDER,
GTK_PARAM_READABLE));
/**
* GtkInfoBar:content-area-spacing:
*
* The default spacing used between elements of the
* content area of the info bar.
*
* Since: 2.18
* Deprecated: 3.6: Use gtk_box_set_spacing()
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("content-area-spacing",
P_("Content area spacing"),
P_("Spacing between elements of the area"),
0,
G_MAXINT,
CONTENT_AREA_DEFAULT_SPACING,
GTK_PARAM_READABLE));
/**
* GtkInfoBar:button-spacing:
*
* Spacing between buttons in the action area of the info bar.
*
* Since: 2.18
* Deprecated: 3.6: Use gtk_box_set_spacing()
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("button-spacing",
P_("Button spacing"),
P_("Spacing between buttons"),
0,
G_MAXINT,
ACTION_AREA_DEFAULT_SPACING,
GTK_PARAM_READABLE));
/**
* GtkInfoBar:action-area-border:
*
* Width of the border around the action area of the info bar.
*
* Since: 2.18
* Deprecated: 3.6: Use gtk_container_set_border_width()
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("action-area-border",
P_("Action area border"),
P_("Width of border around the action area"),
0,
G_MAXINT,
ACTION_AREA_DEFAULT_BORDER,
GTK_PARAM_READABLE));
binding_set = gtk_binding_set_by_class (klass);
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/gtkinfobar.ui");
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkInfoBar, content_area);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkInfoBar, action_area);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkInfoBar, close_button);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkInfoBar, revealer);
}
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
gtk_info_bar_init (GtkInfoBar *info_bar)
{
GtkWidget *widget = GTK_WIDGET (info_bar);
info_bar->priv = gtk_info_bar_get_instance_private (info_bar);
gtk_widget_set_redraw_on_allocate (widget, TRUE);
/* 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->priv->message_type = GTK_MESSAGE_OTHER;
gtk_widget_init_template (GTK_WIDGET (info_bar));
gtk_widget_set_no_show_all (info_bar->priv->close_button, TRUE);
g_signal_connect (info_bar->priv->close_button, "clicked",
G_CALLBACK (close_button_clicked_cb), info_bar);
}
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->custom_tag_start = gtk_info_bar_buildable_custom_tag_start;
iface->custom_finished = gtk_info_bar_buildable_custom_finished;
}
static gint
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)
{
gint 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.
*
* Since: 2.18
*/
void
gtk_info_bar_add_action_widget (GtkInfoBar *info_bar,
GtkWidget *child,
gint 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);
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));
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_pack_end (GTK_BOX (info_bar->priv->action_area),
child, FALSE, FALSE, 0);
if (response_id == GTK_RESPONSE_HELP)
gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
child, TRUE);
}
/**
* gtk_info_bar_get_action_area:
* @info_bar: a #GtkInfoBar
*
* Returns the action area of @info_bar.
*
* Returns: (transfer none): the action area
*
* Since: 2.18
*/
GtkWidget*
gtk_info_bar_get_action_area (GtkInfoBar *info_bar)
{
g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
return info_bar->priv->action_area;
}
/**
* gtk_info_bar_get_content_area:
* @info_bar: a #GtkInfoBar
*
* Returns the content area of @info_bar.
*
* Returns: (transfer none): the content area
*
* Since: 2.18
*/
GtkWidget*
gtk_info_bar_get_content_area (GtkInfoBar *info_bar)
{
g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
return info_bar->priv->content_area;
}
/**
* 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): the #GtkButton widget that was added
*
* Since: 2.18
*/
GtkWidget*
gtk_info_bar_add_button (GtkInfoBar *info_bar,
const gchar *button_text,
gint 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);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
if (button_text)
{
GtkStockItem item;
if (gtk_stock_lookup (button_text, &item))
g_object_set (button, "use-stock", TRUE, NULL);
}
G_GNUC_END_IGNORE_DEPRECATIONS;
gtk_widget_set_can_default (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 gchar *first_button_text,
va_list args)
{
const gchar* text;
gint 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, gint);
while (text != NULL)
{
gtk_info_bar_add_button (info_bar, text, response_id);
text = va_arg (args, gchar*);
if (text == NULL)
break;
response_id = va_arg (args, int);
}
}
/**
* gtk_info_bar_add_buttons:
* @info_bar: a #GtkInfoBar
* @first_button_text: button text or stock ID
* @...: 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.
*
* Since: 2.18
*/
void
gtk_info_bar_add_buttons (GtkInfoBar *info_bar,
const gchar *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
*
* Since: 2.18
*/
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): stock ID or text 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.
* Button text can be either a stock ID such as %GTK_STOCK_OK, or
* some arbitrary text. A response ID can be any positive number,
* or one of the values in the #GtkResponseType enumeration. If the
* user clicks one of these dialog buttons, GtkInfoBar will emit
* the “response” signal with the corresponding response ID.
*
* Returns: a new #GtkInfoBar
*/
GtkWidget*
gtk_info_bar_new_with_buttons (const gchar *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);
}
/**
* 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.
*
* Since: 2.18
*/
void
gtk_info_bar_set_response_sensitive (GtkInfoBar *info_bar,
gint response_id,
gboolean setting)
{
GList *children, *list;
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
for (list = children; list; list = list->next)
{
GtkWidget *widget = list->data;
ResponseData *rd = get_response_data (widget, FALSE);
if (rd && rd->response_id == response_id)
gtk_widget_set_sensitive (widget, setting);
}
g_list_free (children);
}
/**
* 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.
*
* Since: 2.18
*/
void
gtk_info_bar_set_default_response (GtkInfoBar *info_bar,
gint response_id)
{
GList *children, *list;
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
for (list = children; list; list = list->next)
{
GtkWidget *widget = list->data;
ResponseData *rd = get_response_data (widget, FALSE);
if (rd && rd->response_id == response_id)
gtk_widget_grab_default (widget);
}
g_list_free (children);
}
/**
* gtk_info_bar_response:
* @info_bar: a #GtkInfoBar
* @response_id: a response ID
*
* Emits the “response” signal with the given @response_id.
*
* Since: 2.18
*/
void
gtk_info_bar_response (GtkInfoBar *info_bar,
gint response_id)
{
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
g_signal_emit (info_bar, signals[RESPONSE], 0, response_id);
}
typedef struct
{
gchar *widget_name;
gchar *response_id;
} ActionWidgetInfo;
typedef struct
{
GtkInfoBar *info_bar;
GtkBuilder *builder;
GSList *items;
gchar *response;
} ActionWidgetsSubParserData;
static void
attributes_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **names,
const gchar **values,
gpointer user_data,
GError **error)
{
ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
guint i;
if (strcmp (element_name, "action-widget") == 0)
{
for (i = 0; names[i]; i++)
if (strcmp (names[i], "response") == 0)
parser_data->response = g_strdup (values[i]);
}
else if (strcmp (element_name, "action-widgets") == 0)
return;
else
g_warning ("Unsupported tag for GtkInfoBar: %s\n", element_name);
}
static void
attributes_text_element (GMarkupParseContext *context,
const gchar *text,
gsize text_len,
gpointer user_data,
GError **error)
{
ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
ActionWidgetInfo *item;
if (!parser_data->response)
return;
item = g_new (ActionWidgetInfo, 1);
item->widget_name = g_strndup (text, text_len);
item->response_id = parser_data->response;
parser_data->items = g_slist_prepend (parser_data->items, item);
parser_data->response = NULL;
}
static const GMarkupParser attributes_parser =
{
attributes_start_element,
NULL,
attributes_text_element,
};
gboolean
gtk_info_bar_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
ActionWidgetsSubParserData *parser_data;
if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
tagname, parser, data))
return TRUE;
if (!child && strcmp (tagname, "action-widgets") == 0)
{
parser_data = g_slice_new0 (ActionWidgetsSubParserData);
parser_data->info_bar = GTK_INFO_BAR (buildable);
parser_data->items = NULL;
*parser = attributes_parser;
*data = parser_data;
return TRUE;
}
return FALSE;
}
static void
gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data)
{
GSList *l;
ActionWidgetsSubParserData *parser_data;
GObject *object;
GtkInfoBar *info_bar;
ResponseData *ad;
guint signal_id;
if (strcmp (tagname, "action-widgets"))
{
parent_buildable_iface->custom_finished (buildable, builder, child,
tagname, user_data);
return;
}
info_bar = GTK_INFO_BAR (buildable);
parser_data = (ActionWidgetsSubParserData*)user_data;
parser_data->items = g_slist_reverse (parser_data->items);
for (l = parser_data->items; l; l = l->next)
{
ActionWidgetInfo *item = l->data;
object = gtk_builder_get_object (builder, item->widget_name);
if (!object)
{
g_warning ("Unknown object %s specified in action-widgets of %s",
item->widget_name,
gtk_buildable_get_name (GTK_BUILDABLE (buildable)));
continue;
}
ad = get_response_data (GTK_WIDGET (object), TRUE);
ad->response_id = atoi (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);
}
if (ad->response_id == GTK_RESPONSE_HELP)
gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
GTK_WIDGET (object), TRUE);
g_free (item->widget_name);
g_free (item->response_id);
g_free (item);
}
g_slist_free (parser_data->items);
g_slice_free (ActionWidgetsSubParserData, parser_data);
}
/**
* gtk_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 what color to use
* when drawing the message area.
*
* Since: 2.18
*/
void
gtk_info_bar_set_message_type (GtkInfoBar *info_bar,
GtkMessageType message_type)
{
GtkInfoBarPrivate *priv;
g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
priv = info_bar->priv;
if (priv->message_type != message_type)
{
GtkStyleContext *context;
AtkObject *atk_obj;
const char *type_class[] = {
GTK_STYLE_CLASS_INFO,
GTK_STYLE_CLASS_WARNING,
GTK_STYLE_CLASS_QUESTION,
GTK_STYLE_CLASS_ERROR,
NULL
};
context = gtk_widget_get_style_context (GTK_WIDGET (info_bar));
if (type_class[priv->message_type])
gtk_style_context_remove_class (context, type_class[priv->message_type]);
priv->message_type = message_type;
gtk_widget_queue_draw (GTK_WIDGET (info_bar));
atk_obj = gtk_widget_get_accessible (GTK_WIDGET (info_bar));
if (GTK_IS_ACCESSIBLE (atk_obj))
{
const char *name = NULL;
atk_object_set_role (atk_obj, ATK_ROLE_INFO_BAR);
switch (message_type)
{
case GTK_MESSAGE_INFO:
name = _("Information");
break;
case GTK_MESSAGE_QUESTION:
name = _("Question");
break;
case GTK_MESSAGE_WARNING:
name = _("Warning");
break;
case GTK_MESSAGE_ERROR:
name = _("Error");
break;
case GTK_MESSAGE_OTHER:
break;
default:
g_warning ("Unknown GtkMessageType %u", message_type);
break;
}
if (name)
atk_object_set_name (atk_obj, name);
}
if (type_class[priv->message_type])
gtk_style_context_add_class (context, type_class[priv->message_type]);
g_object_notify (G_OBJECT (info_bar), "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.
*
* Since: 2.18
*/
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->priv->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.
*
* Since: 3.10
*/
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 != info_bar->priv->show_close_button)
{
info_bar->priv->show_close_button = setting;
gtk_widget_set_visible (info_bar->priv->close_button, setting);
g_object_notify (G_OBJECT (info_bar), "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
*
* Since: 3.10
*/
gboolean
gtk_info_bar_get_show_close_button (GtkInfoBar *info_bar)
{
g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), FALSE);
return info_bar->priv->show_close_button;
}
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