534 lines
16 KiB
C
534 lines
16 KiB
C
/* gtkrecentchooserutils.h - Private utility functions for implementing a
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* GtkRecentChooser interface
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*
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* Copyright (C) 2006 Emmanuele Bassi
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*
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* All rights reserved
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Based on gtkfilechooserutils.c:
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* Copyright (C) 2003 Red Hat, Inc.
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*/
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#include "config.h"
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#include "gtkrecentchooserutils.h"
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/* Methods */
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static void delegate_set_sort_func (GtkRecentChooser *chooser,
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GtkRecentSortFunc sort_func,
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gpointer sort_data,
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GDestroyNotify data_destroy);
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static void delegate_add_filter (GtkRecentChooser *chooser,
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GtkRecentFilter *filter);
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static void delegate_remove_filter (GtkRecentChooser *chooser,
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GtkRecentFilter *filter);
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static GSList *delegate_list_filters (GtkRecentChooser *chooser);
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static gboolean delegate_select_uri (GtkRecentChooser *chooser,
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const gchar *uri,
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GError **error);
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static void delegate_unselect_uri (GtkRecentChooser *chooser,
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const gchar *uri);
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static GList *delegate_get_items (GtkRecentChooser *chooser);
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static GtkRecentManager *delegate_get_recent_manager (GtkRecentChooser *chooser);
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static void delegate_select_all (GtkRecentChooser *chooser);
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static void delegate_unselect_all (GtkRecentChooser *chooser);
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static gboolean delegate_set_current_uri (GtkRecentChooser *chooser,
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const gchar *uri,
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GError **error);
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static gchar * delegate_get_current_uri (GtkRecentChooser *chooser);
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/* Signals */
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static void delegate_notify (GObject *object,
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GParamSpec *pspec,
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gpointer user_data);
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static void delegate_selection_changed (GtkRecentChooser *receiver,
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gpointer user_data);
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static void delegate_item_activated (GtkRecentChooser *receiver,
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gpointer user_data);
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/**
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* _gtk_recent_chooser_install_properties:
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* @klass: the class structure for a type deriving from #GObject
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*
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* Installs the necessary properties for a class implementing
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* #GtkRecentChooser. A #GtkParamSpecOverride property is installed
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* for each property, using the values from the #GtkRecentChooserProp
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* enumeration. The caller must make sure itself that the enumeration
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* values don't collide with some other property values they
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* are using.
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*/
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void
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_gtk_recent_chooser_install_properties (GObjectClass *klass)
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{
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_RECENT_MANAGER,
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"recent-manager");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_SHOW_PRIVATE,
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"show-private");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_SHOW_TIPS,
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"show-tips");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_SHOW_ICONS,
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"show-icons");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_SHOW_NOT_FOUND,
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"show-not-found");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_SELECT_MULTIPLE,
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"select-multiple");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_LIMIT,
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"limit");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_LOCAL_ONLY,
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"local-only");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_SORT_TYPE,
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"sort-type");
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g_object_class_override_property (klass,
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GTK_RECENT_CHOOSER_PROP_FILTER,
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"filter");
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}
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/**
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* _gtk_recent_chooser_delegate_iface_init:
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* @iface: a #GtkRecentChooserIface
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*
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* An interface-initialization function for use in cases where
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* an object is simply delegating the methods, signals of
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* the #GtkRecentChooser interface to another object.
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* _gtk_recent_chooser_set_delegate() must be called on each
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* instance of the object so that the delegate object can
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* be found.
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*/
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void
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_gtk_recent_chooser_delegate_iface_init (GtkRecentChooserIface *iface)
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{
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iface->set_current_uri = delegate_set_current_uri;
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iface->get_current_uri = delegate_get_current_uri;
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iface->select_uri = delegate_select_uri;
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iface->unselect_uri = delegate_unselect_uri;
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iface->select_all = delegate_select_all;
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iface->unselect_all = delegate_unselect_all;
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iface->get_items = delegate_get_items;
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iface->get_recent_manager = delegate_get_recent_manager;
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iface->set_sort_func = delegate_set_sort_func;
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iface->add_filter = delegate_add_filter;
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iface->remove_filter = delegate_remove_filter;
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iface->list_filters = delegate_list_filters;
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}
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/**
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* _gtk_recent_chooser_set_delegate:
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* @receiver: a #GObject implementing #GtkRecentChooser
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* @delegate: another #GObject implementing #GtkRecentChooser
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*
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* Establishes that calls on @receiver for #GtkRecentChooser
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* methods should be delegated to @delegate, and that
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* #GtkRecentChooser signals emitted on @delegate should be
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* forwarded to @receiver. Must be used in conjunction with
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* _gtk_recent_chooser_delegate_iface_init().
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*/
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void
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_gtk_recent_chooser_set_delegate (GtkRecentChooser *receiver,
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GtkRecentChooser *delegate)
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{
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g_return_if_fail (GTK_IS_RECENT_CHOOSER (receiver));
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g_return_if_fail (GTK_IS_RECENT_CHOOSER (delegate));
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g_object_set_data (G_OBJECT (receiver),
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"gtk-recent-chooser-delegate", delegate);
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g_signal_connect (delegate, "notify",
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G_CALLBACK (delegate_notify), receiver);
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g_signal_connect (delegate, "selection-changed",
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G_CALLBACK (delegate_selection_changed), receiver);
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g_signal_connect (delegate, "item-activated",
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G_CALLBACK (delegate_item_activated), receiver);
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}
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GQuark
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_gtk_recent_chooser_delegate_get_quark (void)
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{
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static GQuark quark = 0;
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if (G_UNLIKELY (quark == 0))
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quark = g_quark_from_static_string ("gtk-recent-chooser-delegate");
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return quark;
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}
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static GtkRecentChooser *
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get_delegate (GtkRecentChooser *receiver)
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{
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return g_object_get_qdata (G_OBJECT (receiver),
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GTK_RECENT_CHOOSER_DELEGATE_QUARK);
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}
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static void
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delegate_set_sort_func (GtkRecentChooser *chooser,
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GtkRecentSortFunc sort_func,
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gpointer sort_data,
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GDestroyNotify data_destroy)
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{
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gtk_recent_chooser_set_sort_func (get_delegate (chooser),
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sort_func,
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sort_data,
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data_destroy);
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}
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static void
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delegate_add_filter (GtkRecentChooser *chooser,
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GtkRecentFilter *filter)
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{
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gtk_recent_chooser_add_filter (get_delegate (chooser), filter);
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}
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static void
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delegate_remove_filter (GtkRecentChooser *chooser,
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GtkRecentFilter *filter)
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{
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gtk_recent_chooser_remove_filter (get_delegate (chooser), filter);
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}
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static GSList *
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delegate_list_filters (GtkRecentChooser *chooser)
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{
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return gtk_recent_chooser_list_filters (get_delegate (chooser));
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}
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static gboolean
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delegate_select_uri (GtkRecentChooser *chooser,
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const gchar *uri,
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GError **error)
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{
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return gtk_recent_chooser_select_uri (get_delegate (chooser), uri, error);
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}
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static void
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delegate_unselect_uri (GtkRecentChooser *chooser,
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const gchar *uri)
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{
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gtk_recent_chooser_unselect_uri (get_delegate (chooser), uri);
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}
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static GList *
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delegate_get_items (GtkRecentChooser *chooser)
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{
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return gtk_recent_chooser_get_items (get_delegate (chooser));
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}
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static GtkRecentManager *
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delegate_get_recent_manager (GtkRecentChooser *chooser)
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{
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return _gtk_recent_chooser_get_recent_manager (get_delegate (chooser));
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}
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static void
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delegate_select_all (GtkRecentChooser *chooser)
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{
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gtk_recent_chooser_select_all (get_delegate (chooser));
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}
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static void
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delegate_unselect_all (GtkRecentChooser *chooser)
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{
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gtk_recent_chooser_unselect_all (get_delegate (chooser));
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}
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static gboolean
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delegate_set_current_uri (GtkRecentChooser *chooser,
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const gchar *uri,
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GError **error)
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{
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return gtk_recent_chooser_set_current_uri (get_delegate (chooser), uri, error);
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}
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static gchar *
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delegate_get_current_uri (GtkRecentChooser *chooser)
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{
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return gtk_recent_chooser_get_current_uri (get_delegate (chooser));
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}
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static void
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delegate_notify (GObject *object,
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GParamSpec *pspec,
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gpointer user_data)
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{
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gpointer iface;
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iface = g_type_interface_peek (g_type_class_peek (G_OBJECT_TYPE (object)),
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gtk_recent_chooser_get_type ());
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if (g_object_interface_find_property (iface, pspec->name))
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g_object_notify (user_data, pspec->name);
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}
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static void
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delegate_selection_changed (GtkRecentChooser *receiver,
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gpointer user_data)
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{
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_gtk_recent_chooser_selection_changed (GTK_RECENT_CHOOSER (user_data));
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}
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static void
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delegate_item_activated (GtkRecentChooser *receiver,
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gpointer user_data)
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{
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_gtk_recent_chooser_item_activated (GTK_RECENT_CHOOSER (user_data));
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}
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static gint
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sort_recent_items_mru (GtkRecentInfo *a,
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GtkRecentInfo *b,
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gpointer unused)
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{
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g_assert (a != NULL && b != NULL);
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return gtk_recent_info_get_modified (b) - gtk_recent_info_get_modified (a);
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}
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static gint
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sort_recent_items_lru (GtkRecentInfo *a,
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GtkRecentInfo *b,
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gpointer unused)
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{
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g_assert (a != NULL && b != NULL);
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return -1 * (gtk_recent_info_get_modified (b) - gtk_recent_info_get_modified (a));
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}
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typedef struct
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{
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GtkRecentSortFunc func;
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gpointer data;
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} SortRecentData;
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/* our proxy sorting function */
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static gint
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sort_recent_items_proxy (gpointer *a,
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gpointer *b,
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gpointer user_data)
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{
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GtkRecentInfo *info_a = (GtkRecentInfo *) a;
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GtkRecentInfo *info_b = (GtkRecentInfo *) b;
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SortRecentData *sort_recent = user_data;
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if (sort_recent->func)
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return (* sort_recent->func) (info_a, info_b, sort_recent->data);
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/* fallback */
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return 0;
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}
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static gboolean
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get_is_recent_filtered (GtkRecentFilter *filter,
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GtkRecentInfo *info)
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{
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GtkRecentFilterInfo filter_info;
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GtkRecentFilterFlags needed;
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gboolean retval;
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g_assert (info != NULL);
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needed = gtk_recent_filter_get_needed (filter);
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filter_info.contains = GTK_RECENT_FILTER_URI | GTK_RECENT_FILTER_MIME_TYPE;
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filter_info.uri = gtk_recent_info_get_uri (info);
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filter_info.mime_type = gtk_recent_info_get_mime_type (info);
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if (needed & GTK_RECENT_FILTER_DISPLAY_NAME)
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{
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filter_info.display_name = gtk_recent_info_get_display_name (info);
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filter_info.contains |= GTK_RECENT_FILTER_DISPLAY_NAME;
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}
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else
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filter_info.uri = NULL;
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if (needed & GTK_RECENT_FILTER_APPLICATION)
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{
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filter_info.applications = (const gchar **) gtk_recent_info_get_applications (info, NULL);
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filter_info.contains |= GTK_RECENT_FILTER_APPLICATION;
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}
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else
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filter_info.applications = NULL;
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if (needed & GTK_RECENT_FILTER_GROUP)
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{
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filter_info.groups = (const gchar **) gtk_recent_info_get_groups (info, NULL);
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filter_info.contains |= GTK_RECENT_FILTER_GROUP;
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}
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else
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filter_info.groups = NULL;
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if (needed & GTK_RECENT_FILTER_AGE)
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{
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filter_info.age = gtk_recent_info_get_age (info);
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filter_info.contains |= GTK_RECENT_FILTER_AGE;
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}
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else
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filter_info.age = -1;
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retval = gtk_recent_filter_filter (filter, &filter_info);
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/* these we own */
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if (filter_info.applications)
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g_strfreev ((gchar **) filter_info.applications);
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if (filter_info.groups)
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g_strfreev ((gchar **) filter_info.groups);
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return !retval;
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}
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/*
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* _gtk_recent_chooser_get_items:
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* @chooser: a #GtkRecentChooser
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* @filter: a #GtkRecentFilter
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* @sort_func: (allow-none): sorting function, or %NULL
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* @sort_data: (allow-none): sorting function data, or %NULL
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*
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* Default implementation for getting the filtered, sorted and
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* clamped list of recently used resources from a #GtkRecentChooser.
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* This function should be used by implementations of the
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* #GtkRecentChooser interface inside the GtkRecentChooser::get_items
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* vfunc.
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*
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* Return value: a list of #GtkRecentInfo objects
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*/
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GList *
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_gtk_recent_chooser_get_items (GtkRecentChooser *chooser,
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GtkRecentFilter *filter,
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GtkRecentSortFunc sort_func,
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gpointer sort_data)
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{
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GtkRecentManager *manager;
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gint limit;
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GtkRecentSortType sort_type;
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GList *items;
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GCompareDataFunc compare_func;
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gint length;
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g_return_val_if_fail (GTK_IS_RECENT_CHOOSER (chooser), NULL);
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manager = _gtk_recent_chooser_get_recent_manager (chooser);
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if (!manager)
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return NULL;
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items = gtk_recent_manager_get_items (manager);
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if (!items)
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return NULL;
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limit = gtk_recent_chooser_get_limit (chooser);
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if (limit == 0)
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return NULL;
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if (filter)
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{
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GList *filter_items, *l;
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gboolean local_only = FALSE;
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gboolean show_private = FALSE;
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gboolean show_not_found = FALSE;
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g_object_get (G_OBJECT (chooser),
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"local-only", &local_only,
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"show-private", &show_private,
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"show-not-found", &show_not_found,
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NULL);
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filter_items = NULL;
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for (l = items; l != NULL; l = l->next)
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{
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GtkRecentInfo *info = l->data;
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gboolean remove_item = FALSE;
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if (get_is_recent_filtered (filter, info))
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remove_item = TRUE;
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if (local_only && !gtk_recent_info_is_local (info))
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remove_item = TRUE;
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if (!show_private && gtk_recent_info_get_private_hint (info))
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remove_item = TRUE;
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if (!show_not_found && !gtk_recent_info_exists (info))
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remove_item = TRUE;
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if (!remove_item)
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filter_items = g_list_prepend (filter_items, info);
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else
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gtk_recent_info_unref (info);
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}
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g_list_free (items);
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items = filter_items;
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}
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if (!items)
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return NULL;
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sort_type = gtk_recent_chooser_get_sort_type (chooser);
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switch (sort_type)
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{
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case GTK_RECENT_SORT_NONE:
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compare_func = NULL;
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break;
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case GTK_RECENT_SORT_MRU:
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compare_func = (GCompareDataFunc) sort_recent_items_mru;
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break;
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case GTK_RECENT_SORT_LRU:
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compare_func = (GCompareDataFunc) sort_recent_items_lru;
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break;
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case GTK_RECENT_SORT_CUSTOM:
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compare_func = (GCompareDataFunc) sort_recent_items_proxy;
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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if (compare_func)
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{
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SortRecentData sort_recent;
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sort_recent.func = sort_func;
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sort_recent.data = sort_data;
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items = g_list_sort_with_data (items, compare_func, &sort_recent);
|
|
}
|
|
|
|
length = g_list_length (items);
|
|
if ((limit != -1) && (length > limit))
|
|
{
|
|
GList *clamp, *l;
|
|
|
|
clamp = g_list_nth (items, limit - 1);
|
|
if (!clamp)
|
|
return items;
|
|
|
|
l = clamp->next;
|
|
clamp->next = NULL;
|
|
|
|
g_list_foreach (l, (GFunc) gtk_recent_info_unref, NULL);
|
|
g_list_free (l);
|
|
}
|
|
|
|
return items;
|
|
}
|