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gtk2/gtk/gtkassistant.c
Cosimo Cecchi 8301b24ee5 assistant: pack the sidebar in a frame instead of an event box 
This has mostly two advantages:
- the most obvious one is the theme can render a border around the
  sidebar if it wants to.
- we also can avoid hardcoding a container border width for the sidebar,
  and just use a padding from the theme. This also allows different
  themes to define a different padding, etc.

The drawback is we must draw the background ourselves, but it's easy
enough.

https://bugzilla.gnome.org/show_bug.cgi?id=650530
2011-05-19 10:54:04 -04:00

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/*
* GTK - The GIMP Toolkit
* Copyright (C) 1999 Red Hat, Inc.
* Copyright (C) 2002 Anders Carlsson <andersca@gnu.org>
* Copyright (C) 2003 Matthias Clasen <mclasen@redhat.com>
* Copyright (C) 2005 Carlos Garnacho Parro <carlosg@gnome.org>
*
* All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gtkassistant
* @Short_description: A widget used to guide users through multi-step operations
* @Title: GtkAssistant
*
* A #GtkAssistant is a widget used to represent a generally complex
* operation splitted in several steps, guiding the user through its pages
* and controlling the page flow to collect the necessary data.
*
* The design of GtkAssistant is that it controls what buttons to show and
* to make sensitive, based on what it knows about the page sequence and
* the <link linkend="GtkAssistantPageType">type</link> of each page, in
* addition to state information like the page
* <link linkend="gtk-assistant-set-page-complete">completion</link> and
* <link linkend="gtk-assistant-commit">committed</link> status.
*
* If you have a case that doesn't quite fit in #GtkAssistants way of
* handling buttons, you can use the #GTK_ASSISTANT_PAGE_CUSTOM page type
* and handle buttons yourself.
*
* <refsect2 id="GtkAssistant-BUILDER-UI">
* <title>GtkAssistant as GtkBuildable</title>
* <para>
* The GtkAssistant implementation of the GtkBuildable interface exposes the
* @action_area as internal children with the name "action_area".
*
* To add pages to an assistant in GtkBuilder, simply add it as a
* &lt;child&gt; to the GtkAssistant object, and set its child properties
* as necessary.
* </para>
* </refsect2>
*/
#include "config.h"
#include <atk/atk.h>
#include "gtkassistant.h"
#include "gtkaccessibleprivate.h"
#include "gtkbutton.h"
#include "gtkbox.h"
#include "gtkframe.h"
#include "gtknotebook.h"
#include "gtkimage.h"
#include "gtklabel.h"
#include "gtksizegroup.h"
#include "gtksizerequest.h"
#include "gtkstock.h"
#include "gtktypebuiltins.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkbuildable.h"
#define HEADER_SPACING 12
#define ACTION_AREA_SPACING 12
typedef struct _GtkAssistantPage GtkAssistantPage;
struct _GtkAssistantPage
{
GtkAssistantPageType type;
guint complete : 1;
guint complete_set : 1;
gchar *title;
GtkWidget *page;
GtkWidget *regular_title;
GtkWidget *current_title;
GdkPixbuf *header_image;
GdkPixbuf *sidebar_image;
};
struct _GtkAssistantPrivate
{
GtkWidget *cancel;
GtkWidget *forward;
GtkWidget *back;
GtkWidget *apply;
GtkWidget *close;
GtkWidget *last;
GtkWidget *sidebar;
GtkWidget *content;
GtkWidget *action_area;
GList *pages;
GSList *visited_pages;
GtkAssistantPage *current_page;
GtkSizeGroup *button_size_group;
GtkSizeGroup *title_size_group;
GtkAssistantPageFunc forward_function;
gpointer forward_function_data;
GDestroyNotify forward_data_destroy;
gint extra_buttons;
guint committed : 1;
};
static void gtk_assistant_class_init (GtkAssistantClass *class);
static void gtk_assistant_init (GtkAssistant *assistant);
static void gtk_assistant_destroy (GtkWidget *widget);
static void gtk_assistant_map (GtkWidget *widget);
static void gtk_assistant_unmap (GtkWidget *widget);
static gboolean gtk_assistant_delete_event (GtkWidget *widget,
GdkEventAny *event);
static void gtk_assistant_add (GtkContainer *container,
GtkWidget *page);
static void gtk_assistant_remove (GtkContainer *container,
GtkWidget *page);
static void gtk_assistant_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_assistant_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec);
static AtkObject *gtk_assistant_get_accessible (GtkWidget *widget);
static GType gtk_assistant_accessible_factory_get_type (void);
static void gtk_assistant_buildable_interface_init (GtkBuildableIface *iface);
static GObject *gtk_assistant_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const gchar *childname);
static gboolean gtk_assistant_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_assistant_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data);
static GList* find_page (GtkAssistant *assistant,
GtkWidget *page);
enum
{
CHILD_PROP_0,
CHILD_PROP_PAGE_TYPE,
CHILD_PROP_PAGE_TITLE,
CHILD_PROP_PAGE_HEADER_IMAGE,
CHILD_PROP_PAGE_SIDEBAR_IMAGE,
CHILD_PROP_PAGE_COMPLETE
};
enum
{
CANCEL,
PREPARE,
APPLY,
CLOSE,
LAST_SIGNAL
};
static guint signals [LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkAssistant, gtk_assistant, GTK_TYPE_WINDOW,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_assistant_buildable_interface_init))
static void
gtk_assistant_class_init (GtkAssistantClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
gobject_class = (GObjectClass *) class;
widget_class = (GtkWidgetClass *) class;
container_class = (GtkContainerClass *) class;
widget_class->destroy = gtk_assistant_destroy;
widget_class->map = gtk_assistant_map;
widget_class->unmap = gtk_assistant_unmap;
widget_class->delete_event = gtk_assistant_delete_event;
widget_class->get_accessible = gtk_assistant_get_accessible;
container_class->add = gtk_assistant_add;
container_class->remove = gtk_assistant_remove;
container_class->set_child_property = gtk_assistant_set_child_property;
container_class->get_child_property = gtk_assistant_get_child_property;
/**
* GtkAssistant::cancel:
* @assistant: the #GtkAssistant
*
* The ::cancel signal is emitted when then the cancel button is clicked.
*
* Since: 2.10
*/
signals[CANCEL] =
g_signal_new (I_("cancel"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkAssistantClass, cancel),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkAssistant::prepare:
* @assistant: the #GtkAssistant
* @page: the current page
*
* The ::prepare signal is emitted when a new page is set as the
* assistant's current page, before making the new page visible.
*
* A handler for this signal can do any preparations which are
* necessary before showing @page.
*
* Since: 2.10
*/
signals[PREPARE] =
g_signal_new (I_("prepare"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkAssistantClass, prepare),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GTK_TYPE_WIDGET);
/**
* GtkAssistant::apply:
* @assistant: the #GtkAssistant
*
* The ::apply signal is emitted when the apply button is clicked.
*
* The default behavior of the #GtkAssistant is to switch to the page
* after the current page, unless the current page is the last one.
*
* A handler for the ::apply signal should carry out the actions for
* which the wizard has collected data. If the action takes a long time
* to complete, you might consider putting a page of type
* %GTK_ASSISTANT_PAGE_PROGRESS after the confirmation page and handle
* this operation within the #GtkAssistant::prepare signal of the progress
* page.
*
* Since: 2.10
*/
signals[APPLY] =
g_signal_new (I_("apply"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkAssistantClass, apply),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkAssistant::close:
* @assistant: the #GtkAssistant
*
* The ::close signal is emitted either when the close button of
* a summary page is clicked, or when the apply button in the last
* page in the flow (of type %GTK_ASSISTANT_PAGE_CONFIRM) is clicked.
*
* Since: 2.10
*/
signals[CLOSE] =
g_signal_new (I_("close"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkAssistantClass, close),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("header-padding",
P_("Header Padding"),
P_("Number of pixels around the header."),
0,
G_MAXINT,
6,
GTK_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("content-padding",
P_("Content Padding"),
P_("Number of pixels around the content pages."),
0,
G_MAXINT,
1,
GTK_PARAM_READABLE));
/**
* GtkAssistant:page-type:
*
* The type of the assistant page.
*
* Since: 2.10
*/
gtk_container_class_install_child_property (container_class,
CHILD_PROP_PAGE_TYPE,
g_param_spec_enum ("page-type",
P_("Page type"),
P_("The type of the assistant page"),
GTK_TYPE_ASSISTANT_PAGE_TYPE,
GTK_ASSISTANT_PAGE_CONTENT,
GTK_PARAM_READWRITE));
/**
* GtkAssistant:title:
*
* The title of the page.
*
* Since: 2.10
*/
gtk_container_class_install_child_property (container_class,
CHILD_PROP_PAGE_TITLE,
g_param_spec_string ("title",
P_("Page title"),
P_("The title of the assistant page"),
NULL,
GTK_PARAM_READWRITE));
/**
* GtkAssistant:header-image:
*
* This image used to be displayed in the page header.
*
* Since: 2.10
*
* Deprecated: 3.2: Since GTK+ 3.2, a header is no longer shown;
* add your header decoration to the page content instead.
*/
gtk_container_class_install_child_property (container_class,
CHILD_PROP_PAGE_HEADER_IMAGE,
g_param_spec_object ("header-image",
P_("Header image"),
P_("Header image for the assistant page"),
GDK_TYPE_PIXBUF,
GTK_PARAM_READWRITE));
/**
* GtkAssistant:sidebar-image:
*
* This image used to be displayed in the 'sidebar'.
*
* Since: 2.10
*
* Deprecated: 3.2: Since GTK+ 3.2, the sidebar image is no longer shown.
*/
gtk_container_class_install_child_property (container_class,
CHILD_PROP_PAGE_SIDEBAR_IMAGE,
g_param_spec_object ("sidebar-image",
P_("Sidebar image"),
P_("Sidebar image for the assistant page"),
GDK_TYPE_PIXBUF,
GTK_PARAM_READWRITE));
/**
* GtkAssistant:complete:
*
* Setting the "complete" child property to %TRUE marks a page as
* complete (i.e.: all the required fields are filled out). GTK+ uses
* this information to control the sensitivity of the navigation buttons.
*
* Since: 2.10
*/
gtk_container_class_install_child_property (container_class,
CHILD_PROP_PAGE_COMPLETE,
g_param_spec_boolean ("complete",
P_("Page complete"),
P_("Whether all required fields on the page have been filled out"),
FALSE,
G_PARAM_READWRITE));
g_type_class_add_private (gobject_class, sizeof (GtkAssistantPrivate));
}
static gint
default_forward_function (gint current_page, gpointer data)
{
GtkAssistant *assistant;
GtkAssistantPrivate *priv;
GtkAssistantPage *page_info;
GList *page_node;
assistant = GTK_ASSISTANT (data);
priv = assistant->priv;
page_node = g_list_nth (priv->pages, ++current_page);
if (!page_node)
return -1;
page_info = (GtkAssistantPage *) page_node->data;
while (page_node && !gtk_widget_get_visible (page_info->page))
{
page_node = page_node->next;
current_page++;
if (page_node)
page_info = (GtkAssistantPage *) page_node->data;
}
return current_page;
}
static gboolean
last_button_visible (GtkAssistant *assistant, GtkAssistantPage *page)
{
GtkAssistantPrivate *priv = assistant->priv;
GtkAssistantPage *page_info;
gint count, page_num, n_pages;
if (page == NULL)
return FALSE;
if (page->type != GTK_ASSISTANT_PAGE_CONTENT)
return FALSE;
count = 0;
page_num = g_list_index (priv->pages, page);
n_pages = g_list_length (priv->pages);
page_info = page;
while (page_num >= 0 && page_num < n_pages &&
page_info->type == GTK_ASSISTANT_PAGE_CONTENT &&
(count == 0 || page_info->complete) &&
count < n_pages)
{
page_num = (priv->forward_function) (page_num, priv->forward_function_data);
page_info = g_list_nth_data (priv->pages, page_num);
count++;
}
/* Make the last button visible if we can skip multiple
* pages and end on a confirmation or summary page
*/
if (count > 1 && page_info &&
(page_info->type == GTK_ASSISTANT_PAGE_CONFIRM ||
page_info->type == GTK_ASSISTANT_PAGE_SUMMARY))
return TRUE;
else
return FALSE;
}
static void
update_actions_size (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv = assistant->priv;
GList *l;
GtkAssistantPage *page;
gint buttons, page_buttons;
if (!priv->current_page)
return;
/* Some heuristics to find out how many buttons we should
* reserve space for. It is possible to trick this code
* with page forward functions and invisible pages, etc.
*/
buttons = 0;
for (l = priv->pages; l; l = l->next)
{
page = l->data;
if (!gtk_widget_get_visible (page->page))
continue;
page_buttons = 2; /* cancel, forward/apply/close */
if (l != priv->pages)
page_buttons += 1; /* back */
if (last_button_visible (assistant, page))
page_buttons += 1; /* last */
buttons = MAX (buttons, page_buttons);
}
buttons += priv->extra_buttons;
gtk_widget_set_size_request (priv->action_area,
buttons * gtk_widget_get_allocated_width (priv->cancel) + (buttons - 1) * 6,
-1);
}
static void
compute_last_button_state (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv = assistant->priv;
gtk_widget_set_sensitive (priv->last, priv->current_page->complete);
if (last_button_visible (assistant, priv->current_page))
gtk_widget_show (priv->last);
else
gtk_widget_hide (priv->last);
}
static void
compute_progress_state (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv = assistant->priv;
gint page_num, n_pages;
n_pages = gtk_assistant_get_n_pages (assistant);
page_num = gtk_assistant_get_current_page (assistant);
page_num = (priv->forward_function) (page_num, priv->forward_function_data);
if (page_num >= 0 && page_num < n_pages)
gtk_widget_show (priv->forward);
else
gtk_widget_hide (priv->forward);
}
static void
update_buttons_state (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv = assistant->priv;
if (!priv->current_page)
return;
switch (priv->current_page->type)
{
case GTK_ASSISTANT_PAGE_INTRO:
gtk_widget_set_sensitive (priv->cancel, TRUE);
gtk_widget_set_sensitive (priv->forward, priv->current_page->complete);
gtk_widget_grab_default (priv->forward);
gtk_widget_show (priv->forward);
gtk_widget_hide (priv->back);
gtk_widget_hide (priv->apply);
gtk_widget_hide (priv->close);
compute_last_button_state (assistant);
break;
case GTK_ASSISTANT_PAGE_CONFIRM:
gtk_widget_set_sensitive (priv->cancel, TRUE);
gtk_widget_set_sensitive (priv->back, TRUE);
gtk_widget_set_sensitive (priv->apply, priv->current_page->complete);
gtk_widget_grab_default (priv->apply);
gtk_widget_show (priv->back);
gtk_widget_show (priv->apply);
gtk_widget_hide (priv->forward);
gtk_widget_hide (priv->close);
gtk_widget_hide (priv->last);
break;
case GTK_ASSISTANT_PAGE_CONTENT:
gtk_widget_set_sensitive (priv->cancel, TRUE);
gtk_widget_set_sensitive (priv->back, TRUE);
gtk_widget_set_sensitive (priv->forward, priv->current_page->complete);
gtk_widget_grab_default (priv->forward);
gtk_widget_show (priv->back);
gtk_widget_show (priv->forward);
gtk_widget_hide (priv->apply);
gtk_widget_hide (priv->close);
compute_last_button_state (assistant);
break;
case GTK_ASSISTANT_PAGE_SUMMARY:
gtk_widget_set_sensitive (priv->close, priv->current_page->complete);
gtk_widget_grab_default (priv->close);
gtk_widget_show (priv->close);
gtk_widget_hide (priv->back);
gtk_widget_hide (priv->forward);
gtk_widget_hide (priv->apply);
gtk_widget_hide (priv->last);
break;
case GTK_ASSISTANT_PAGE_PROGRESS:
gtk_widget_set_sensitive (priv->cancel, priv->current_page->complete);
gtk_widget_set_sensitive (priv->back, priv->current_page->complete);
gtk_widget_set_sensitive (priv->forward, priv->current_page->complete);
gtk_widget_grab_default (priv->forward);
gtk_widget_show (priv->back);
gtk_widget_hide (priv->apply);
gtk_widget_hide (priv->close);
gtk_widget_hide (priv->last);
compute_progress_state (assistant);
break;
case GTK_ASSISTANT_PAGE_CUSTOM:
gtk_widget_hide (priv->cancel);
gtk_widget_hide (priv->back);
gtk_widget_hide (priv->forward);
gtk_widget_hide (priv->apply);
gtk_widget_hide (priv->last);
gtk_widget_hide (priv->close);
break;
default:
g_assert_not_reached ();
}
if (priv->committed)
gtk_widget_hide (priv->cancel);
else if (priv->current_page->type == GTK_ASSISTANT_PAGE_SUMMARY ||
priv->current_page->type == GTK_ASSISTANT_PAGE_CUSTOM)
gtk_widget_hide (priv->cancel);
else
gtk_widget_show (priv->cancel);
/* this is quite general, we don't want to
* go back if it's the first page
*/
if (!priv->visited_pages)
gtk_widget_hide (priv->back);
}
static gboolean
update_page_title_state (GtkAssistant *assistant, GList *list)
{
GtkAssistantPage *page, *other;
GtkAssistantPrivate *priv = assistant->priv;
gboolean visible;
GList *l;
page = list->data;
if (page->title == NULL || page->title[0] == 0)
visible = FALSE;
else
visible = gtk_widget_get_visible (page->page);
if (page == priv->current_page)
{
gtk_widget_set_visible (page->regular_title, FALSE);
gtk_widget_set_visible (page->current_title, visible);
}
else
{
/* If multiple consecutive pages have the same title,
* we only show it once, since it would otherwise look
* silly. We have to be a little careful, since we
* _always_ show the title of the current page.
*/
if (list->prev)
{
other = list->prev->data;
if (g_strcmp0 (page->title, other->title) == 0)
visible = FALSE;
}
for (l = list->next; l; l = l->next)
{
other = l->data;
if (g_strcmp0 (page->title, other->title) != 0)
break;
if (other == priv->current_page)
{
visible = FALSE;
break;
}
}
gtk_widget_set_visible (page->regular_title, visible);
gtk_widget_set_visible (page->current_title, FALSE);
}
return visible;
}
static void
update_title_state (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv = assistant->priv;
GList *l;
gboolean show_titles;
show_titles = FALSE;
for (l = priv->pages; l != NULL; l = l->next)
{
if (update_page_title_state (assistant, l))
show_titles = TRUE;
}
gtk_widget_set_visible (priv->sidebar, show_titles);
}
static void
set_current_page (GtkAssistant *assistant,
gint page_num)
{
GtkAssistantPrivate *priv = assistant->priv;
priv->current_page = (GtkAssistantPage *)g_list_nth_data (priv->pages, page_num);
g_signal_emit (assistant, signals [PREPARE], 0, priv->current_page->page);
update_title_state (assistant);
gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->content), page_num);
/* update buttons state, flow may have changed */
if (gtk_widget_get_mapped (GTK_WIDGET (assistant)))
update_buttons_state (assistant);
if (!gtk_widget_child_focus (priv->current_page->page, GTK_DIR_TAB_FORWARD))
{
GtkWidget *button[6];
gint i;
/* find the best button to focus */
button[0] = priv->apply;
button[1] = priv->close;
button[2] = priv->forward;
button[3] = priv->back;
button[4] = priv->cancel;
button[5] = priv->last;
for (i = 0; i < 6; i++)
{
if (gtk_widget_get_visible (button[i]) &&
gtk_widget_get_sensitive (button[i]))
{
gtk_widget_grab_focus (button[i]);
break;
}
}
}
gtk_widget_queue_resize (GTK_WIDGET (assistant));
}
static gint
compute_next_step (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv = assistant->priv;
GtkAssistantPage *page_info;
gint current_page, n_pages, next_page;
current_page = gtk_assistant_get_current_page (assistant);
page_info = priv->current_page;
n_pages = gtk_assistant_get_n_pages (assistant);
next_page = (priv->forward_function) (current_page,
priv->forward_function_data);
if (next_page >= 0 && next_page < n_pages)
{
priv->visited_pages = g_slist_prepend (priv->visited_pages, page_info);
set_current_page (assistant, next_page);
return TRUE;
}
return FALSE;
}
static void
on_assistant_close (GtkWidget *widget,
GtkAssistant *assistant)
{
g_signal_emit (assistant, signals [CLOSE], 0, NULL);
}
static void
on_assistant_apply (GtkWidget *widget,
GtkAssistant *assistant)
{
gboolean success;
g_signal_emit (assistant, signals [APPLY], 0);
success = compute_next_step (assistant);
/* if the assistant hasn't switched to another page, just emit
* the CLOSE signal, it't the last page in the assistant flow
*/
if (!success)
g_signal_emit (assistant, signals [CLOSE], 0);
}
static void
on_assistant_forward (GtkWidget *widget,
GtkAssistant *assistant)
{
gtk_assistant_next_page (assistant);
}
static void
on_assistant_back (GtkWidget *widget,
GtkAssistant *assistant)
{
gtk_assistant_previous_page (assistant);
}
static void
on_assistant_cancel (GtkWidget *widget,
GtkAssistant *assistant)
{
g_signal_emit (assistant, signals [CANCEL], 0, NULL);
}
static void
on_assistant_last (GtkWidget *widget,
GtkAssistant *assistant)
{
GtkAssistantPrivate *priv = assistant->priv;
while (priv->current_page->type == GTK_ASSISTANT_PAGE_CONTENT &&
priv->current_page->complete)
compute_next_step (assistant);
}
static gboolean
alternative_button_order (GtkAssistant *assistant)
{
GtkSettings *settings;
GdkScreen *screen;
gboolean result;
screen = gtk_widget_get_screen (GTK_WIDGET (assistant));
settings = gtk_settings_get_for_screen (screen);
g_object_get (settings,
"gtk-alternative-button-order", &result,
NULL);
return result;
}
static gboolean
assistant_sidebar_draw_cb (GtkWidget *widget,
cairo_t *cr,
gpointer user_data)
{
gint width, height;
GtkStyleContext *context;
width = gtk_widget_get_allocated_width (widget);
height = gtk_widget_get_allocated_height (widget);
context = gtk_widget_get_style_context (widget);
gtk_render_background (context, cr, 0, 0, width, height);
return FALSE;
}
static void
gtk_assistant_init (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv;
GtkStyleContext *context;
GtkWidget *main_box;
GtkWidget *content_box;
GtkWidget *sidebar_frame;
assistant->priv = G_TYPE_INSTANCE_GET_PRIVATE (assistant,
GTK_TYPE_ASSISTANT,
GtkAssistantPrivate);
priv = assistant->priv;
/* use border on inner panes instead */
gtk_container_set_border_width (GTK_CONTAINER (assistant), 0);
gtk_widget_push_composite_child ();
main_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
priv->sidebar = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
/* use a frame for the sidebar, and manually render a background
* in it. GtkFrame also gives us padding support for free.
*/
sidebar_frame = gtk_frame_new (NULL);
context = gtk_widget_get_style_context (sidebar_frame);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_SIDEBAR);
g_signal_connect (sidebar_frame, "draw",
G_CALLBACK (assistant_sidebar_draw_cb), assistant);
content_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (content_box), 12);
priv->content = gtk_notebook_new ();
gtk_notebook_set_show_border (GTK_NOTEBOOK (priv->content), FALSE);
gtk_notebook_set_show_tabs (GTK_NOTEBOOK (priv->content), FALSE);
priv->action_area = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_container_add (GTK_CONTAINER (sidebar_frame), priv->sidebar);
gtk_box_pack_start (GTK_BOX (main_box), sidebar_frame, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (main_box), content_box, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (content_box), priv->content, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (content_box), priv->action_area, FALSE, TRUE, 0);
gtk_widget_set_halign (priv->action_area, GTK_ALIGN_END);
gtk_widget_show_all (main_box);
gtk_widget_set_parent (main_box, GTK_WIDGET (assistant));
_gtk_bin_set_child (GTK_BIN (assistant), main_box);
priv->close = gtk_button_new_from_stock (GTK_STOCK_CLOSE);
priv->apply = gtk_button_new_from_stock (GTK_STOCK_APPLY);
priv->forward = gtk_button_new_from_stock (GTK_STOCK_GO_FORWARD);
priv->back = gtk_button_new_from_stock (GTK_STOCK_GO_BACK);
priv->cancel = gtk_button_new_from_stock (GTK_STOCK_CANCEL);
priv->last = gtk_button_new_from_stock (GTK_STOCK_GOTO_LAST);
gtk_widget_set_can_default (priv->close, TRUE);
gtk_widget_set_can_default (priv->apply, TRUE);
gtk_widget_set_can_default (priv->forward, TRUE);
priv->button_size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
gtk_size_group_add_widget (priv->button_size_group, priv->close);
gtk_size_group_add_widget (priv->button_size_group, priv->apply);
gtk_size_group_add_widget (priv->button_size_group, priv->forward);
gtk_size_group_add_widget (priv->button_size_group, priv->back);
gtk_size_group_add_widget (priv->button_size_group, priv->cancel);
gtk_size_group_add_widget (priv->button_size_group, priv->last);
if (!alternative_button_order (assistant))
{
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->apply, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->forward, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->back, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->last, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->cancel, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->close, FALSE, FALSE, 0);
}
else
{
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->close, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->cancel, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->apply, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->forward, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->back, FALSE, FALSE, 0);
gtk_box_pack_end (GTK_BOX (priv->action_area), priv->last, FALSE, FALSE, 0);
}
gtk_widget_show (priv->forward);
gtk_widget_show (priv->back);
gtk_widget_show (priv->cancel);
gtk_widget_show (priv->action_area);
gtk_widget_pop_composite_child ();
priv->title_size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
priv->pages = NULL;
priv->current_page = NULL;
priv->visited_pages = NULL;
priv->forward_function = default_forward_function;
priv->forward_function_data = assistant;
priv->forward_data_destroy = NULL;
g_signal_connect (G_OBJECT (priv->close), "clicked",
G_CALLBACK (on_assistant_close), assistant);
g_signal_connect (G_OBJECT (priv->apply), "clicked",
G_CALLBACK (on_assistant_apply), assistant);
g_signal_connect (G_OBJECT (priv->forward), "clicked",
G_CALLBACK (on_assistant_forward), assistant);
g_signal_connect (G_OBJECT (priv->back), "clicked",
G_CALLBACK (on_assistant_back), assistant);
g_signal_connect (G_OBJECT (priv->cancel), "clicked",
G_CALLBACK (on_assistant_cancel), assistant);
g_signal_connect (G_OBJECT (priv->last), "clicked",
G_CALLBACK (on_assistant_last), assistant);
}
static void
gtk_assistant_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case CHILD_PROP_PAGE_TYPE:
gtk_assistant_set_page_type (GTK_ASSISTANT (container), child,
g_value_get_enum (value));
break;
case CHILD_PROP_PAGE_TITLE:
gtk_assistant_set_page_title (GTK_ASSISTANT (container), child,
g_value_get_string (value));
break;
case CHILD_PROP_PAGE_HEADER_IMAGE:
gtk_assistant_set_page_header_image (GTK_ASSISTANT (container), child,
g_value_get_object (value));
break;
case CHILD_PROP_PAGE_SIDEBAR_IMAGE:
gtk_assistant_set_page_side_image (GTK_ASSISTANT (container), child,
g_value_get_object (value));
break;
case CHILD_PROP_PAGE_COMPLETE:
gtk_assistant_set_page_complete (GTK_ASSISTANT (container), child,
g_value_get_boolean (value));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_assistant_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case CHILD_PROP_PAGE_TYPE:
g_value_set_enum (value,
gtk_assistant_get_page_type (GTK_ASSISTANT (container), child));
break;
case CHILD_PROP_PAGE_TITLE:
g_value_set_string (value,
gtk_assistant_get_page_title (GTK_ASSISTANT (container), child));
break;
case CHILD_PROP_PAGE_HEADER_IMAGE:
g_value_set_object (value,
gtk_assistant_get_page_header_image (GTK_ASSISTANT (container), child));
break;
case CHILD_PROP_PAGE_SIDEBAR_IMAGE:
g_value_set_object (value,
gtk_assistant_get_page_side_image (GTK_ASSISTANT (container), child));
break;
case CHILD_PROP_PAGE_COMPLETE:
g_value_set_boolean (value,
gtk_assistant_get_page_complete (GTK_ASSISTANT (container), child));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
on_page_notify_visibility (GtkWidget *widget,
GParamSpec *arg,
gpointer data)
{
GtkAssistant *assistant = GTK_ASSISTANT (data);
if (gtk_widget_get_mapped (GTK_WIDGET (assistant)))
{
update_buttons_state (assistant);
update_title_state (assistant);
}
}
static void
remove_page (GtkAssistant *assistant,
GList *element)
{
GtkAssistantPrivate *priv = assistant->priv;
GtkAssistantPage *page_info;
GList *page_node;
page_info = element->data;
/* If this is the current page, we need to switch away. */
if (page_info == priv->current_page)
{
if (!compute_next_step (assistant))
{
/* The best we can do at this point is probably to pick
* the first visible page.
*/
page_node = priv->pages;
while (page_node &&
!gtk_widget_get_visible (((GtkAssistantPage *) page_node->data)->page))
page_node = page_node->next;
if (page_node == element)
page_node = page_node->next;
if (page_node)
priv->current_page = page_node->data;
else
priv->current_page = NULL;
}
}
g_signal_handlers_disconnect_by_func (page_info->page, on_page_notify_visibility, assistant);
gtk_size_group_remove_widget (priv->title_size_group, page_info->regular_title);
gtk_size_group_remove_widget (priv->title_size_group, page_info->current_title);
gtk_container_remove (GTK_CONTAINER (priv->sidebar), page_info->regular_title);
gtk_container_remove (GTK_CONTAINER (priv->sidebar), page_info->current_title);
gtk_notebook_remove_page (GTK_NOTEBOOK (priv->content), gtk_notebook_page_num (GTK_NOTEBOOK (priv->content), page_info->page));
priv->pages = g_list_remove_link (priv->pages, element);
priv->visited_pages = g_slist_remove_all (priv->visited_pages, page_info);
g_free (page_info->title);
g_slice_free (GtkAssistantPage, page_info);
g_list_free_1 (element);
if (gtk_widget_get_mapped (GTK_WIDGET (assistant)))
{
update_buttons_state (assistant);
update_actions_size (assistant);
}
}
static void
gtk_assistant_destroy (GtkWidget *widget)
{
GtkAssistant *assistant = GTK_ASSISTANT (widget);
GtkAssistantPrivate *priv = assistant->priv;
/* We set current to NULL so that the remove code doesn't try
* to do anything funny
*/
priv->current_page = NULL;
while (priv->pages)
remove_page (assistant, priv->pages);
if (priv->sidebar)
priv->sidebar = NULL;
if (priv->content)
priv->content = NULL;
if (priv->action_area)
priv->action_area = NULL;
if (priv->button_size_group)
{
g_object_unref (priv->button_size_group);
priv->button_size_group = NULL;
}
if (priv->title_size_group)
{
g_object_unref (priv->title_size_group);
priv->title_size_group = NULL;
}
if (priv->forward_function)
{
if (priv->forward_function_data &&
priv->forward_data_destroy)
priv->forward_data_destroy (priv->forward_function_data);
priv->forward_function = NULL;
priv->forward_function_data = NULL;
priv->forward_data_destroy = NULL;
}
if (priv->visited_pages)
{
g_slist_free (priv->visited_pages);
priv->visited_pages = NULL;
}
GTK_WIDGET_CLASS (gtk_assistant_parent_class)->destroy (widget);
}
static GList*
find_page (GtkAssistant *assistant,
GtkWidget *page)
{
GtkAssistantPrivate *priv = assistant->priv;
GList *child = priv->pages;
while (child)
{
GtkAssistantPage *page_info = child->data;
if (page_info->page == page)
return child;
child = child->next;
}
return NULL;
}
static void
gtk_assistant_map (GtkWidget *widget)
{
GtkAssistant *assistant = GTK_ASSISTANT (widget);
GtkAssistantPrivate *priv = assistant->priv;
GList *page_node;
GtkAssistantPage *page;
gint page_num;
/* if there's no default page, pick the first one */
page = NULL;
page_num = 0;
if (!priv->current_page)
{
page_node = priv->pages;
while (page_node && !gtk_widget_get_visible (((GtkAssistantPage *) page_node->data)->page))
{
page_node = page_node->next;
page_num++;
}
if (page_node)
page = page_node->data;
}
if (page && gtk_widget_get_visible (page->page))
set_current_page (assistant, page_num);
update_buttons_state (assistant);
update_actions_size (assistant);
update_title_state (assistant);
GTK_WIDGET_CLASS (gtk_assistant_parent_class)->map (widget);
}
static void
gtk_assistant_unmap (GtkWidget *widget)
{
GtkAssistant *assistant = GTK_ASSISTANT (widget);
GtkAssistantPrivate *priv = assistant->priv;
g_slist_free (priv->visited_pages);
priv->visited_pages = NULL;
priv->current_page = NULL;
GTK_WIDGET_CLASS (gtk_assistant_parent_class)->unmap (widget);
}
static gboolean
gtk_assistant_delete_event (GtkWidget *widget,
GdkEventAny *event)
{
GtkAssistant *assistant = GTK_ASSISTANT (widget);
GtkAssistantPrivate *priv = assistant->priv;
/* Do not allow cancelling in the middle of a progress page */
if (priv->current_page &&
(priv->current_page->type != GTK_ASSISTANT_PAGE_PROGRESS ||
priv->current_page->complete))
g_signal_emit (widget, signals [CANCEL], 0, NULL);
return TRUE;
}
static void
gtk_assistant_add (GtkContainer *container,
GtkWidget *page)
{
gtk_assistant_append_page (GTK_ASSISTANT (container), page);
}
static void
gtk_assistant_remove (GtkContainer *container,
GtkWidget *page)
{
GtkAssistant *assistant = (GtkAssistant*) container;
GList *element;
element = find_page (assistant, page);
if (element)
{
remove_page (assistant, element);
gtk_widget_queue_resize ((GtkWidget *) container);
}
}
/**
* gtk_assistant_new:
*
* Creates a new #GtkAssistant.
*
* Return value: a newly created #GtkAssistant
*
* Since: 2.10
*/
GtkWidget*
gtk_assistant_new (void)
{
GtkWidget *assistant;
assistant = g_object_new (GTK_TYPE_ASSISTANT, NULL);
return assistant;
}
/**
* gtk_assistant_get_current_page:
* @assistant: a #GtkAssistant
*
* Returns the page number of the current page.
*
* Return value: The index (starting from 0) of the current
* page in the @assistant, or -1 if the @assistant has no pages,
* or no current page.
*
* Since: 2.10
*/
gint
gtk_assistant_get_current_page (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), -1);
priv = assistant->priv;
if (!priv->pages || !priv->current_page)
return -1;
return g_list_index (priv->pages, priv->current_page);
}
/**
* gtk_assistant_set_current_page:
* @assistant: a #GtkAssistant
* @page_num: index of the page to switch to, starting from 0.
* If negative, the last page will be used. If greater
* than the number of pages in the @assistant, nothing
* will be done.
*
* Switches the page to @page_num.
*
* Note that this will only be necessary in custom buttons,
* as the @assistant flow can be set with
* gtk_assistant_set_forward_page_func().
*
* Since: 2.10
*/
void
gtk_assistant_set_current_page (GtkAssistant *assistant,
gint page_num)
{
GtkAssistantPrivate *priv;
GtkAssistantPage *page;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
priv = assistant->priv;
if (page_num >= 0)
page = (GtkAssistantPage *) g_list_nth_data (priv->pages, page_num);
else
{
page = (GtkAssistantPage *) g_list_last (priv->pages)->data;
page_num = g_list_length (priv->pages);
}
g_return_if_fail (page != NULL);
if (priv->current_page == page)
return;
/* only add the page to the visited list if the assistant is mapped,
* if not, just use it as an initial page setting, for the cases where
* the initial page is != to 0
*/
if (gtk_widget_get_mapped (GTK_WIDGET (assistant)))
priv->visited_pages = g_slist_prepend (priv->visited_pages,
priv->current_page);
set_current_page (assistant, page_num);
}
/**
* gtk_assistant_next_page:
* @assistant: a #GtkAssistant
*
* Navigate to the next page.
*
* It is a programming error to call this function when
* there is no next page.
*
* This function is for use when creating pages of the
* #GTK_ASSISTANT_PAGE_CUSTOM type.
*
* Since: 3.0
*/
void
gtk_assistant_next_page (GtkAssistant *assistant)
{
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
if (!compute_next_step (assistant))
g_critical ("Page flow is broken.\n"
"You may want to end it with a page of type\n"
"GTK_ASSISTANT_PAGE_CONFIRM or GTK_ASSISTANT_PAGE_SUMMARY");
}
/**
* gtk_assistant_previous_page:
* @assistant: a #GtkAssistant
*
* Navigate to the previous visited page.
*
* It is a programming error to call this function when
* no previous page is available.
*
* This function is for use when creating pages of the
* #GTK_ASSISTANT_PAGE_CUSTOM type.
*
* Since: 3.0
*/
void
gtk_assistant_previous_page (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv;
GtkAssistantPage *page_info;
GSList *page_node;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
priv = assistant->priv;
/* skip the progress pages when going back */
do
{
page_node = priv->visited_pages;
g_return_if_fail (page_node != NULL);
priv->visited_pages = priv->visited_pages->next;
page_info = (GtkAssistantPage *) page_node->data;
g_slist_free_1 (page_node);
}
while (page_info->type == GTK_ASSISTANT_PAGE_PROGRESS ||
!gtk_widget_get_visible (page_info->page));
set_current_page (assistant, g_list_index (priv->pages, page_info));
}
/**
* gtk_assistant_get_n_pages:
* @assistant: a #GtkAssistant
*
* Returns the number of pages in the @assistant
*
* Return value: the number of pages in the @assistant
*
* Since: 2.10
*/
gint
gtk_assistant_get_n_pages (GtkAssistant *assistant)
{
GtkAssistantPrivate *priv;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), 0);
priv = assistant->priv;
return g_list_length (priv->pages);
}
/**
* gtk_assistant_get_nth_page:
* @assistant: a #GtkAssistant
* @page_num: the index of a page in the @assistant,
* or -1 to get the last page
*
* Returns the child widget contained in page number @page_num.
*
* Return value: (transfer none): the child widget, or %NULL
* if @page_num is out of bounds
*
* Since: 2.10
*/
GtkWidget*
gtk_assistant_get_nth_page (GtkAssistant *assistant,
gint page_num)
{
GtkAssistantPrivate *priv;
GtkAssistantPage *page;
GList *elem;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), NULL);
g_return_val_if_fail (page_num >= -1, NULL);
priv = assistant->priv;
if (page_num == -1)
elem = g_list_last (priv->pages);
else
elem = g_list_nth (priv->pages, page_num);
if (!elem)
return NULL;
page = (GtkAssistantPage *) elem->data;
return page->page;
}
/**
* gtk_assistant_prepend_page:
* @assistant: a #GtkAssistant
* @page: a #GtkWidget
*
* Prepends a page to the @assistant.
*
* Return value: the index (starting at 0) of the inserted page
*
* Since: 2.10
*/
gint
gtk_assistant_prepend_page (GtkAssistant *assistant,
GtkWidget *page)
{
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), 0);
g_return_val_if_fail (GTK_IS_WIDGET (page), 0);
return gtk_assistant_insert_page (assistant, page, 0);
}
/**
* gtk_assistant_append_page:
* @assistant: a #GtkAssistant
* @page: a #GtkWidget
*
* Appends a page to the @assistant.
*
* Return value: the index (starting at 0) of the inserted page
*
* Since: 2.10
*/
gint
gtk_assistant_append_page (GtkAssistant *assistant,
GtkWidget *page)
{
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), 0);
g_return_val_if_fail (GTK_IS_WIDGET (page), 0);
return gtk_assistant_insert_page (assistant, page, -1);
}
/**
* gtk_assistant_insert_page:
* @assistant: a #GtkAssistant
* @page: a #GtkWidget
* @position: the index (starting at 0) at which to insert the page,
* or -1 to append the page to the @assistant
*
* Inserts a page in the @assistant at a given position.
*
* Return value: the index (starting from 0) of the inserted page
*
* Since: 2.10
*/
gint
gtk_assistant_insert_page (GtkAssistant *assistant,
GtkWidget *page,
gint position)
{
GtkAssistantPrivate *priv;
GtkAssistantPage *page_info;
gint n_pages;
GtkStyleContext *context;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), 0);
g_return_val_if_fail (GTK_IS_WIDGET (page), 0);
g_return_val_if_fail (gtk_widget_get_parent (page) == NULL, 0);
g_return_val_if_fail (!gtk_widget_is_toplevel (page), 0);
priv = assistant->priv;
page_info = g_slice_new0 (GtkAssistantPage);
page_info->page = page;
page_info->regular_title = gtk_label_new (NULL);
page_info->current_title = gtk_label_new (NULL);
gtk_misc_set_alignment (GTK_MISC (page_info->regular_title), 0.,0.5);
gtk_widget_show (page_info->regular_title);
gtk_misc_set_alignment (GTK_MISC (page_info->current_title), 0.,0.5);
gtk_widget_hide (page_info->current_title);
context = gtk_widget_get_style_context (page_info->current_title);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_HIGHLIGHT);
gtk_size_group_add_widget (priv->title_size_group, page_info->regular_title);
gtk_size_group_add_widget (priv->title_size_group, page_info->current_title);
g_signal_connect (G_OBJECT (page), "notify::visible",
G_CALLBACK (on_page_notify_visibility), assistant);
n_pages = g_list_length (priv->pages);
if (position < 0 || position > n_pages)
position = n_pages;
priv->pages = g_list_insert (priv->pages, page_info, position);
gtk_box_pack_start (GTK_BOX (priv->sidebar), page_info->regular_title, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (priv->sidebar), page_info->current_title, FALSE, FALSE, 0);
gtk_box_reorder_child (GTK_BOX (priv->sidebar), page_info->regular_title, 2 * position);
gtk_box_reorder_child (GTK_BOX (priv->sidebar), page_info->current_title, 2 * position + 1);
gtk_notebook_insert_page (GTK_NOTEBOOK (priv->content), page, NULL, position);
if (gtk_widget_get_mapped (GTK_WIDGET (assistant)))
{
update_buttons_state (assistant);
update_actions_size (assistant);
}
return position;
}
/**
* gtk_assistant_set_forward_page_func:
* @assistant: a #GtkAssistant
* @page_func: (allow-none): the #GtkAssistantPageFunc, or %NULL
* to use the default one
* @data: user data for @page_func
* @destroy: destroy notifier for @data
*
* Sets the page forwarding function to be @page_func.
*
* This function will be used to determine what will be
* the next page when the user presses the forward button.
* Setting @page_func to %NULL will make the assistant to
* use the default forward function, which just goes to the
* next visible page.
*
* Since: 2.10
*/
void
gtk_assistant_set_forward_page_func (GtkAssistant *assistant,
GtkAssistantPageFunc page_func,
gpointer data,
GDestroyNotify destroy)
{
GtkAssistantPrivate *priv;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
priv = assistant->priv;
if (priv->forward_data_destroy &&
priv->forward_function_data)
(*priv->forward_data_destroy) (priv->forward_function_data);
if (page_func)
{
priv->forward_function = page_func;
priv->forward_function_data = data;
priv->forward_data_destroy = destroy;
}
else
{
priv->forward_function = default_forward_function;
priv->forward_function_data = assistant;
priv->forward_data_destroy = NULL;
}
/* Page flow has possibly changed, so the
* buttons state might need to change too
*/
if (gtk_widget_get_mapped (GTK_WIDGET (assistant)))
update_buttons_state (assistant);
}
/**
* gtk_assistant_add_action_widget:
* @assistant: a #GtkAssistant
* @child: a #GtkWidget
*
* Adds a widget to the action area of a #GtkAssistant.
*
* Since: 2.10
*/
void
gtk_assistant_add_action_widget (GtkAssistant *assistant,
GtkWidget *child)
{
GtkAssistantPrivate *priv;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = assistant->priv;
if (GTK_IS_BUTTON (child))
{
gtk_size_group_add_widget (priv->button_size_group, child);
priv->extra_buttons += 1;
if (gtk_widget_get_mapped (GTK_WIDGET (assistant)))
update_actions_size (assistant);
}
gtk_box_pack_end (GTK_BOX (priv->action_area), child, FALSE, FALSE, 0);
}
/**
* gtk_assistant_remove_action_widget:
* @assistant: a #GtkAssistant
* @child: a #GtkWidget
*
* Removes a widget from the action area of a #GtkAssistant.
*
* Since: 2.10
*/
void
gtk_assistant_remove_action_widget (GtkAssistant *assistant,
GtkWidget *child)
{
GtkAssistantPrivate *priv;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = assistant->priv;
if (GTK_IS_BUTTON (child))
{
gtk_size_group_remove_widget (priv->button_size_group, child);
priv->extra_buttons -= 1;
if (gtk_widget_get_mapped (GTK_WIDGET (assistant)))
update_actions_size (assistant);
}
gtk_container_remove (GTK_CONTAINER (priv->action_area), child);
}
/**
* gtk_assistant_set_page_title:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
* @title: the new title for @page
*
* Sets a title for @page.
*
* The title is displayed in the header area of the assistant
* when @page is the current page.
*
* Since: 2.10
*/
void
gtk_assistant_set_page_title (GtkAssistant *assistant,
GtkWidget *page,
const gchar *title)
{
GtkAssistantPage *page_info;
GList *child;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
g_return_if_fail (GTK_IS_WIDGET (page));
child = find_page (assistant, page);
g_return_if_fail (child != NULL);
page_info = (GtkAssistantPage*) child->data;
g_free (page_info->title);
page_info->title = g_strdup (title);
gtk_label_set_text ((GtkLabel*) page_info->regular_title, title);
gtk_label_set_text ((GtkLabel*) page_info->current_title, title);
gtk_widget_queue_resize (GTK_WIDGET (assistant));
gtk_container_child_notify (GTK_CONTAINER (assistant), page, "title");
}
/**
* gtk_assistant_get_page_title:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
*
* Gets the title for @page.
*
* Return value: the title for @page
*
* Since: 2.10
*/
G_CONST_RETURN gchar*
gtk_assistant_get_page_title (GtkAssistant *assistant,
GtkWidget *page)
{
GtkAssistantPage *page_info;
GList *child;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (page), NULL);
child = find_page (assistant, page);
g_return_val_if_fail (child != NULL, NULL);
page_info = (GtkAssistantPage*) child->data;
return page_info->title;
}
/**
* gtk_assistant_set_page_type:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
* @type: the new type for @page
*
* Sets the page type for @page.
*
* The page type determines the page behavior in the @assistant.
*
* Since: 2.10
*/
void
gtk_assistant_set_page_type (GtkAssistant *assistant,
GtkWidget *page,
GtkAssistantPageType type)
{
GtkAssistantPage *page_info;
GList *child;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
g_return_if_fail (GTK_IS_WIDGET (page));
child = find_page (assistant, page);
g_return_if_fail (child != NULL);
page_info = (GtkAssistantPage*) child->data;
if (type != page_info->type)
{
page_info->type = type;
/* backwards compatibility to the era before fixing bug 604289 */
if (type == GTK_ASSISTANT_PAGE_SUMMARY && !page_info->complete_set)
{
gtk_assistant_set_page_complete (assistant, page, TRUE);
page_info->complete_set = FALSE;
}
/* Always set buttons state, a change in a future page
* might change current page buttons
*/
update_buttons_state (assistant);
gtk_container_child_notify (GTK_CONTAINER (assistant), page, "page-type");
}
}
/**
* gtk_assistant_get_page_type:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
*
* Gets the page type of @page.
*
* Return value: the page type of @page
*
* Since: 2.10
*/
GtkAssistantPageType
gtk_assistant_get_page_type (GtkAssistant *assistant,
GtkWidget *page)
{
GtkAssistantPage *page_info;
GList *child;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), GTK_ASSISTANT_PAGE_CONTENT);
g_return_val_if_fail (GTK_IS_WIDGET (page), GTK_ASSISTANT_PAGE_CONTENT);
child = find_page (assistant, page);
g_return_val_if_fail (child != NULL, GTK_ASSISTANT_PAGE_CONTENT);
page_info = (GtkAssistantPage*) child->data;
return page_info->type;
}
/**
* gtk_assistant_set_page_header_image:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
* @pixbuf: (allow-none): the new header image @page
*
* Sets a header image for @page.
*
* Since: 2.10
*
* Deprecated: 3.2: Since GTK+ 3.2, a header is no longer shown;
* add your header decoration to the page content instead.
*/
void
gtk_assistant_set_page_header_image (GtkAssistant *assistant,
GtkWidget *page,
GdkPixbuf *pixbuf)
{
GtkAssistantPage *page_info;
GList *child;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
g_return_if_fail (GTK_IS_WIDGET (page));
g_return_if_fail (pixbuf == NULL || GDK_IS_PIXBUF (pixbuf));
child = find_page (assistant, page);
g_return_if_fail (child != NULL);
page_info = (GtkAssistantPage*) child->data;
if (pixbuf != page_info->header_image)
{
if (page_info->header_image)
{
g_object_unref (page_info->header_image);
page_info->header_image = NULL;
}
if (pixbuf)
page_info->header_image = g_object_ref (pixbuf);
gtk_container_child_notify (GTK_CONTAINER (assistant), page, "header-image");
}
}
/**
* gtk_assistant_get_page_header_image:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
*
* Gets the header image for @page.
*
* Return value: (transfer none): the header image for @page,
* or %NULL if there's no header image for the page
*
* Since: 2.10
*
* Deprecated: 3.2: Since GTK+ 3.2, a header is no longer shown;
* add your header decoration to the page content instead.
*/
GdkPixbuf*
gtk_assistant_get_page_header_image (GtkAssistant *assistant,
GtkWidget *page)
{
GtkAssistantPage *page_info;
GList *child;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (page), NULL);
child = find_page (assistant, page);
g_return_val_if_fail (child != NULL, NULL);
page_info = (GtkAssistantPage*) child->data;
return page_info->header_image;
}
/**
* gtk_assistant_set_page_side_image:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
* @pixbuf: (allow-none): the new side image @page
*
* Sets a side image for @page.
*
* This image used to be displayed in the side area of the assistant
* when @page is the current page.
*
* Since: 2.10
*
* Deprecated: 3.2: Since GTK+ 3.2, sidebar images are not
* shown anymore.
*/
void
gtk_assistant_set_page_side_image (GtkAssistant *assistant,
GtkWidget *page,
GdkPixbuf *pixbuf)
{
GtkAssistantPage *page_info;
GList *child;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
g_return_if_fail (GTK_IS_WIDGET (page));
g_return_if_fail (pixbuf == NULL || GDK_IS_PIXBUF (pixbuf));
child = find_page (assistant, page);
g_return_if_fail (child != NULL);
page_info = (GtkAssistantPage*) child->data;
if (pixbuf != page_info->sidebar_image)
{
if (page_info->sidebar_image)
{
g_object_unref (page_info->sidebar_image);
page_info->sidebar_image = NULL;
}
if (pixbuf)
page_info->sidebar_image = g_object_ref (pixbuf);
gtk_container_child_notify (GTK_CONTAINER (assistant), page, "sidebar-image");
}
}
/**
* gtk_assistant_get_page_side_image:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
*
* Gets the side image for @page.
*
* Return value: (transfer none): the side image for @page,
* or %NULL if there's no side image for the page
*
* Since: 2.10
*
* Deprecated: 3.2: Since GTK+ 3.2, sidebar images are not
* shown anymore.
*/
GdkPixbuf*
gtk_assistant_get_page_side_image (GtkAssistant *assistant,
GtkWidget *page)
{
GtkAssistantPage *page_info;
GList *child;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (page), NULL);
child = find_page (assistant, page);
g_return_val_if_fail (child != NULL, NULL);
page_info = (GtkAssistantPage*) child->data;
return page_info->sidebar_image;
}
/**
* gtk_assistant_set_page_complete:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
* @complete: the completeness status of the page
*
* Sets whether @page contents are complete.
*
* This will make @assistant update the buttons state
* to be able to continue the task.
*
* Since: 2.10
*/
void
gtk_assistant_set_page_complete (GtkAssistant *assistant,
GtkWidget *page,
gboolean complete)
{
GtkAssistantPage *page_info;
GList *child;
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
g_return_if_fail (GTK_IS_WIDGET (page));
child = find_page (assistant, page);
g_return_if_fail (child != NULL);
page_info = (GtkAssistantPage*) child->data;
if (complete != page_info->complete)
{
page_info->complete = complete;
page_info->complete_set = TRUE;
/* Always set buttons state, a change in a future page
* might change current page buttons
*/
update_buttons_state (assistant);
gtk_container_child_notify (GTK_CONTAINER (assistant), page, "complete");
}
}
/**
* gtk_assistant_get_page_complete:
* @assistant: a #GtkAssistant
* @page: a page of @assistant
*
* Gets whether @page is complete.
*
* Return value: %TRUE if @page is complete.
*
* Since: 2.10
*/
gboolean
gtk_assistant_get_page_complete (GtkAssistant *assistant,
GtkWidget *page)
{
GtkAssistantPage *page_info;
GList *child;
g_return_val_if_fail (GTK_IS_ASSISTANT (assistant), FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (page), FALSE);
child = find_page (assistant, page);
g_return_val_if_fail (child != NULL, FALSE);
page_info = (GtkAssistantPage*) child->data;
return page_info->complete;
}
/**
* gtk_assistant_update_buttons_state:
* @assistant: a #GtkAssistant
*
* Forces @assistant to recompute the buttons state.
*
* GTK+ automatically takes care of this in most situations,
* e.g. when the user goes to a different page, or when the
* visibility or completeness of a page changes.
*
* One situation where it can be necessary to call this
* function is when changing a value on the current page
* affects the future page flow of the assistant.
*
* Since: 2.10
*/
void
gtk_assistant_update_buttons_state (GtkAssistant *assistant)
{
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
update_buttons_state (assistant);
}
/**
* gtk_assistant_commit:
* @assistant: a #GtkAssistant
*
* Erases the visited page history so the back button is not
* shown on the current page, and removes the cancel button
* from subsequent pages.
*
* Use this when the information provided up to the current
* page is hereafter deemed permanent and cannot be modified
* or undone. For example, showing a progress page to track
* a long-running, unreversible operation after the user has
* clicked apply on a confirmation page.
*
* Since: 2.22
*/
void
gtk_assistant_commit (GtkAssistant *assistant)
{
g_return_if_fail (GTK_IS_ASSISTANT (assistant));
g_slist_free (assistant->priv->visited_pages);
assistant->priv->visited_pages = NULL;
assistant->priv->committed = TRUE;
update_buttons_state (assistant);
}
static AtkObject *
gtk_assistant_get_accessible (GtkWidget *widget)
{
static gboolean first_time = TRUE;
if (first_time)
{
_gtk_accessible_set_factory_type (GTK_TYPE_ASSISTANT,
gtk_assistant_accessible_factory_get_type ());
first_time = FALSE;
}
return GTK_WIDGET_CLASS (gtk_assistant_parent_class)->get_accessible (widget);
}
/* accessible implementation */
/* dummy typedefs */
typedef struct _GtkAssistantAccessible GtkAssistantAccessible;
typedef struct _GtkAssistantAccessibleClass GtkAssistantAccessibleClass;
ATK_DEFINE_TYPE (GtkAssistantAccessible, _gtk_assistant_accessible, GTK_TYPE_ASSISTANT);
static gint
gtk_assistant_accessible_get_n_children (AtkObject *accessible)
{
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
if (widget == NULL)
return 0;
return g_list_length (GTK_ASSISTANT (widget)->priv->pages) + 1;
}
static AtkObject *
gtk_assistant_accessible_ref_child (AtkObject *accessible,
gint index)
{
GtkAssistant *assistant;
GtkAssistantPrivate *priv;
GtkWidget *widget, *child;
gint n_pages;
AtkObject *obj;
const gchar *title;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
if (widget == NULL)
return NULL;
assistant = GTK_ASSISTANT (widget);
priv = assistant->priv;
n_pages = g_list_length (priv->pages);
if (index < 0)
return NULL;
else if (index < n_pages)
{
GtkAssistantPage *page = g_list_nth_data (priv->pages, index);
child = page->page;
title = gtk_assistant_get_page_title (assistant, child);
}
else if (index == n_pages)
{
child = priv->action_area;
title = NULL;
}
else
return NULL;
obj = gtk_widget_get_accessible (child);
if (title)
atk_object_set_name (obj, title);
return g_object_ref (obj);
}
static void
_gtk_assistant_accessible_class_init (GtkAssistantAccessibleClass *klass)
{
AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
atk_class->get_n_children = gtk_assistant_accessible_get_n_children;
atk_class->ref_child = gtk_assistant_accessible_ref_child;
}
static void
_gtk_assistant_accessible_init (GtkAssistantAccessible *self)
{
}
/* factory */
typedef AtkObjectFactory GtkAssistantAccessibleFactory;
typedef AtkObjectFactoryClass GtkAssistantAccessibleFactoryClass;
G_DEFINE_TYPE (GtkAssistantAccessibleFactory,
gtk_assistant_accessible_factory,
ATK_TYPE_OBJECT_FACTORY);
static GType
gtk_assistant_accessible_factory_get_accessible_type (void)
{
return _gtk_assistant_accessible_get_type ();
}
static AtkObject*
gtk_assistant_accessible_factory_create_accessible (GObject *obj)
{
AtkObject *accessible;
accessible = g_object_new (_gtk_assistant_accessible_get_type (), NULL);
atk_object_initialize (accessible, obj);
return accessible;
}
static void
gtk_assistant_accessible_factory_class_init (AtkObjectFactoryClass *class)
{
class->create_accessible = gtk_assistant_accessible_factory_create_accessible;
class->get_accessible_type = gtk_assistant_accessible_factory_get_accessible_type;
}
static void
gtk_assistant_accessible_factory_init (AtkObjectFactory *factory)
{
}
/* buildable implementation */
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_assistant_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->get_internal_child = gtk_assistant_buildable_get_internal_child;
iface->custom_tag_start = gtk_assistant_buildable_custom_tag_start;
iface->custom_finished = gtk_assistant_buildable_custom_finished;
}
static GObject *
gtk_assistant_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const gchar *childname)
{
if (strcmp (childname, "action_area") == 0)
return G_OBJECT (GTK_ASSISTANT (buildable)->priv->action_area);
return parent_buildable_iface->get_internal_child (buildable,
builder,
childname);
}
gboolean
gtk_assistant_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
return parent_buildable_iface->custom_tag_start (buildable, builder, child,
tagname, parser, data);
}
static void
gtk_assistant_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data)
{
parent_buildable_iface->custom_finished (buildable, builder, child,
tagname, user_data);
}
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