/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-source-selector.c
*
* Copyright (C) 2003 Ximian, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Ettore Perazzoli <ettore@ximian.com>
*/
#include <config.h>
#include "e-source-selector.h"
#include "e-util-marshal.h"
#include <gal/util/e-util.h>
#include <gtk/gtktreeselection.h>
#include <gtk/gtktreestore.h>
#include <gtk/gtkcellrenderertoggle.h>
#include <gtk/gtkcellrenderertext.h>
#define PARENT_TYPE gtk_tree_view_get_type ()
static GtkTreeViewClass *parent_class = NULL;
struct _ESourceSelectorPrivate {
ESourceList *list;
GtkTreeStore *tree_store;
GHashTable *selected_sources;
int rebuild_model_idle_id;
gboolean checkboxes_shown;
};
enum {
SELECTION_CHANGED,
PRIMARY_SELECTION_CHANGED,
FILL_POPUP_MENU,
NUM_SIGNALS
};
static unsigned int signals[NUM_SIGNALS] = { 0 };
/* Selection management. */
static GHashTable *
create_selected_sources_hash (void)
{
return g_hash_table_new_full (g_direct_hash, g_direct_equal,
(GDestroyNotify) g_object_unref, NULL);
}
static gboolean
source_is_selected (ESourceSelector *selector,
ESource *source)
{
if (g_hash_table_lookup (selector->priv->selected_sources, source) == NULL)
return FALSE;
else
return TRUE;
}
static void
select_source (ESourceSelector *selector,
ESource *source)
{
if (g_hash_table_lookup (selector->priv->selected_sources, source) != NULL)
return;
g_hash_table_insert (selector->priv->selected_sources, source, source);
g_object_ref (source);
}
static void
unselect_source (ESourceSelector *selector,
ESource *source)
{
if (g_hash_table_lookup (selector->priv->selected_sources, source) == NULL)
return;
/* (This will unref the source.) */
g_hash_table_remove (selector->priv->selected_sources, source);
}
/* Setting up the model. */
static void
rebuild_model (ESourceSelector *selector)
{
GtkTreeStore *tree_store;
GtkTreeIter iter;
GSList *groups, *p;
GHashTable *new_selected_sources;
new_selected_sources = create_selected_sources_hash ();
tree_store = selector->priv->tree_store;
gtk_tree_store_clear (GTK_TREE_STORE (tree_store));
groups = e_source_list_peek_groups (selector->priv->list);
for (p = groups; p != NULL; p = p->next) {
ESourceGroup *group = E_SOURCE_GROUP (p->data);
GSList *sources, *q;
gtk_tree_store_append (GTK_TREE_STORE (tree_store), &iter, NULL);
gtk_tree_store_set (GTK_TREE_STORE (tree_store), &iter, 0, group, -1);
sources = e_source_group_peek_sources (group);
for (q = sources; q != NULL; q = q->next) {
ESource *source = E_SOURCE (q->data);
GtkTreeIter child_iter;
gtk_tree_store_append (GTK_TREE_STORE (tree_store), &child_iter, &iter);
gtk_tree_store_set (GTK_TREE_STORE (tree_store), &child_iter, 0, source, -1);
if (g_hash_table_lookup (selector->priv->selected_sources, source) != NULL) {
g_hash_table_insert (new_selected_sources, source, source);
g_object_ref (source);
}
}
}
/* Since new_selected_sources is a subset of selected_sources, we can tell whether the overall
selection has changed just by comparing the sizes of the hash tables. */
if (g_hash_table_size (selector->priv->selected_sources) != g_hash_table_size (new_selected_sources))
g_signal_emit (selector, signals[SELECTION_CHANGED], 0);
g_hash_table_destroy (selector->priv->selected_sources);
selector->priv->selected_sources = new_selected_sources;
}
static int
on_idle_rebuild_model_callback (ESourceSelector *selector)
{
rebuild_model (selector);
selector->priv->rebuild_model_idle_id = 0;
return FALSE;
}
static void
list_changed_callback (ESourceList *list,
ESourceSelector *selector)
{
ESourceSelectorPrivate *priv = selector->priv;
if (priv->rebuild_model_idle_id == 0)
priv->rebuild_model_idle_id = g_idle_add ((GSourceFunc) on_idle_rebuild_model_callback,
selector);
}
static void
setup_model (ESourceSelector *selector)
{
rebuild_model (selector);
g_signal_connect_object (selector->priv->list, "changed", G_CALLBACK (list_changed_callback), G_OBJECT (selector), 0);
}
/* Data functions for rendering the model. */
static void
toggle_cell_data_func (GtkTreeViewColumn *column,
GtkCellRenderer *renderer,
GtkTreeModel *model,
GtkTreeIter *iter,
ESourceSelector *selector)
{
void *data;
gtk_tree_model_get (model, iter, 0, &data, -1);
if (E_IS_SOURCE_GROUP (data)) {
g_object_set (renderer, "visible", FALSE, NULL);
} else {
g_assert (E_IS_SOURCE (data));
g_object_set (renderer, "visible", selector->priv->checkboxes_shown, NULL);
if (source_is_selected (selector, E_SOURCE (data)))
g_object_set (renderer, "active", TRUE, NULL);
else
g_object_set (renderer, "active", FALSE, NULL);
}
}
static void
text_cell_data_func (GtkTreeViewColumn *column,
GtkCellRenderer *renderer,
GtkTreeModel *model,
GtkTreeIter *iter,
ESourceSelector *selector)
{
void *data;
gtk_tree_model_get (model, iter, 0, &data, -1);
if (E_IS_SOURCE_GROUP (data)) {
g_object_set (renderer,
"text", e_source_group_peek_name (E_SOURCE_GROUP (data)),
"weight", PANGO_WEIGHT_BOLD,
"foreground_set", FALSE,
NULL);
} else {
ESource *source;
guint32 color;
gboolean has_color;
g_assert (E_IS_SOURCE (data));
source = E_SOURCE (data);
g_object_set (renderer,
"text", e_source_peek_name (source),
"weight", PANGO_WEIGHT_NORMAL,
NULL);
has_color = e_source_get_color (source, &color);
if (!has_color) {
g_object_set (renderer,
"foreground_set", FALSE,
NULL);
} else {
char *color_string = g_strdup_printf ("#%06x", color);
g_object_set (renderer,
"foreground_set", TRUE,
"foreground", color_string,
NULL);
g_free (color_string);
}
}
}
/* Custom selection function to make groups non selectable. */
static gboolean
selection_func (GtkTreeSelection *selection,
GtkTreeModel *model,
GtkTreePath *path,
gboolean path_currently_selected,
ESourceSelector *selector)
{
GtkTreeIter iter;
void *data;
if (! gtk_tree_model_get_iter (model, &iter, path))
return FALSE;
gtk_tree_model_get (model, &iter, 0, &data, -1);
if (E_IS_SOURCE_GROUP (data))
return FALSE;
else
return TRUE;
}
/* Callbacks. */
static void
cell_toggled_callback (GtkCellRendererToggle *renderer,
const char *path_string,
ESourceSelector *selector)
{
GtkTreeModel *model = GTK_TREE_MODEL (selector->priv->tree_store);
GtkTreePath *path = gtk_tree_path_new_from_string (path_string);
GtkTreeIter iter;
ESource *source;
void *data;
if (! gtk_tree_model_get_iter (model, &iter, path)) {
gtk_tree_path_free (path);
return;
}
gtk_tree_model_get (model, &iter, 0, &data, -1);
if (! E_IS_SOURCE (data)) {
gtk_tree_path_free (path);
return;
}
source = E_SOURCE (data);
if (source_is_selected (selector, source))
unselect_source (selector, source);
else
select_source (selector, source);
gtk_tree_model_row_changed (model, path, &iter);
g_signal_emit (selector, signals[SELECTION_CHANGED], 0);
gtk_tree_path_free (path);
}
static void
selection_changed_callback (GtkTreeSelection *selection,
ESourceSelector *selector)
{
g_signal_emit (selector, signals[PRIMARY_SELECTION_CHANGED], 0);
}
static gboolean
selector_button_press_event (GtkWidget *widget, GdkEventButton *event, ESourceSelector *selector)
{
GtkWidget *menu;
/* only process right-clicks */
if (event->button != 3)
return FALSE;
/* create the menu */
menu = gtk_menu_new ();
g_signal_emit (G_OBJECT (selector), signals[FILL_POPUP_MENU], 0, GTK_MENU (menu));
/* popup the menu */
gtk_menu_popup (GTK_MENU (menu), NULL, NULL, NULL, NULL, event->button, event->time);
return TRUE;
}
/* GObject methods. */
static void
impl_dispose (GObject *object)
{
ESourceSelectorPrivate *priv = E_SOURCE_SELECTOR (object)->priv;
if (priv->selected_sources != NULL) {
g_hash_table_destroy (priv->selected_sources);
priv->selected_sources = NULL;
}
if (priv->rebuild_model_idle_id != 0) {
g_source_remove (priv->rebuild_model_idle_id);
priv->rebuild_model_idle_id = 0;
}
if (priv->list != NULL) {
g_object_unref (priv->list);
priv->list = NULL;
}
if (priv->tree_store != NULL) {
g_object_unref (priv->tree_store);
priv->tree_store = NULL;
}
(* G_OBJECT_CLASS (parent_class)->dispose) (object);
}
static void
impl_finalize (GObject *object)
{
ESourceSelectorPrivate *priv = E_SOURCE_SELECTOR (object)->priv;
g_free (priv);
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
/* Initialization. */
static void
class_init (ESourceSelectorClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->dispose = impl_dispose;
object_class->finalize = impl_finalize;
parent_class = g_type_class_peek_parent (class);
signals[SELECTION_CHANGED] =
g_signal_new ("selection_changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ESourceSelectorClass, selection_changed),
NULL, NULL,
e_util_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[PRIMARY_SELECTION_CHANGED] =
g_signal_new ("primary_selection_changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ESourceSelectorClass, primary_selection_changed),
NULL, NULL,
e_util_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[FILL_POPUP_MENU] =
g_signal_new ("fill_popup_menu",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ESourceSelectorClass, fill_popup_menu),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_OBJECT, 1);
}
static void
init (ESourceSelector *selector)
{
ESourceSelectorPrivate *priv;
GtkTreeViewColumn *column;
GtkCellRenderer *cell_renderer;
GtkTreeSelection *selection;
priv = g_new0 (ESourceSelectorPrivate, 1);
selector->priv = priv;
g_signal_connect (G_OBJECT (selector), "button_press_event",
G_CALLBACK (selector_button_press_event), selector);
priv->checkboxes_shown = TRUE;
priv->selected_sources = create_selected_sources_hash ();
priv->tree_store = gtk_tree_store_new (1, G_TYPE_POINTER);
gtk_tree_view_set_model (GTK_TREE_VIEW (selector), GTK_TREE_MODEL (priv->tree_store));
column = gtk_tree_view_column_new ();
gtk_tree_view_append_column (GTK_TREE_VIEW (selector), column);
cell_renderer = gtk_cell_renderer_toggle_new ();
gtk_tree_view_column_pack_start (column, cell_renderer, FALSE);
gtk_tree_view_column_set_cell_data_func (column, cell_renderer, (GtkTreeCellDataFunc) toggle_cell_data_func, selector, NULL);
g_signal_connect (cell_renderer, "toggled", G_CALLBACK (cell_toggled_callback), selector);
cell_renderer = gtk_cell_renderer_text_new ();
gtk_tree_view_column_pack_start (column, cell_renderer, TRUE);
gtk_tree_view_column_set_cell_data_func (column, cell_renderer, (GtkTreeCellDataFunc) text_cell_data_func, selector, NULL);
selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (selector));
gtk_tree_selection_set_select_function (selection, (GtkTreeSelectionFunc) selection_func, selector, NULL);
g_signal_connect_object (selection, "changed", G_CALLBACK (selection_changed_callback), G_OBJECT (selector), 0);
gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (selector), FALSE);
}
/* Public API. */
/**
* e_source_selector_new:
* @list: A source list.
*
* Create a new view for @list. The view will update automatically when @list
* changes.
*
* Return value: The newly created widget.
**/
GtkWidget *
e_source_selector_new (ESourceList *list)
{
ESourceSelector *selector;
g_return_val_if_fail (E_IS_SOURCE_LIST (list), NULL);
selector = g_object_new (e_source_selector_get_type (), NULL);
selector->priv->list = list;
g_object_ref (list);
setup_model (selector);
gtk_tree_view_expand_all (GTK_TREE_VIEW (selector));
return GTK_WIDGET (selector);
}
/**
* e_source_selector_get_selection:
* @selector:
*
* Get the list of selected sources, i.e. those that were enabled through the
* corresponding checkboxes in the tree.
*
* Return value: A list of the ESources currently selected. The sources will
* be in the same order as they appear on the screen, and the list should be
* freed using e_source_selector_free_selection().
**/
GSList *
e_source_selector_get_selection (ESourceSelector *selector)
{
GSList *selection_list;
GSList *groups;
GSList *p;
g_return_val_if_fail (E_IS_SOURCE_SELECTOR (selector), NULL);
selection_list = NULL;
groups = e_source_list_peek_groups (selector->priv->list);
for (p = groups; p != NULL; p = p->next) {
ESourceGroup *group = E_SOURCE_GROUP (p->data);
GSList *sources;
GSList *q;
sources = e_source_group_peek_sources (group);
for (q = sources; q != NULL; q = q->next) {
ESource *source = E_SOURCE (q->data);
if (source_is_selected (selector, source)) {
selection_list = g_slist_prepend (selection_list, source);
g_object_ref (source);
}
}
}
return g_slist_reverse (selection_list);
}
/**
* e_source_list_free_selection:
* @list: A selection list returned by e_source_selector_get_selection().
*
* Free the selection list.
**/
void
e_source_selector_free_selection (GSList *list)
{
g_slist_foreach (list, (GFunc) g_object_unref, NULL);
g_slist_free (list);
}
/**
* e_source_selector_show_selection:
* @selector: An ESourceSelector widget
*
* Specify whether the checkboxes in the ESourceSelector should be shown or
* not.
**/
void
e_source_selector_show_selection (ESourceSelector *selector,
gboolean show)
{
g_return_if_fail (E_IS_SOURCE_SELECTOR (selector));
show = !! show;
if (show == selector->priv->checkboxes_shown)
return;
selector->priv->checkboxes_shown = show;
gtk_tree_model_foreach (GTK_TREE_MODEL (selector->priv->tree_store),
(GtkTreeModelForeachFunc) gtk_tree_model_row_changed,
NULL);
}
/**
* e_source_selector_selection_shown:
* @selector:
*
* Check whether the checkboxes in the ESourceSelector are being shown or not.
*
* Return value: %TRUE if the checkboxes are shown, %FALSE otherwise.
**/
gboolean
e_source_selector_selection_shown (ESourceSelector *selector)
{
g_return_val_if_fail (E_IS_SOURCE_SELECTOR (selector), FALSE);
return selector->priv->checkboxes_shown;
}
/**
* e_source_selector_select_source:
* @selector: An ESourceSelector widget
* @source: An ESource.
*
* Select @source in @selector.
**/
void
e_source_selector_select_source (ESourceSelector *selector,
ESource *source)
{
g_return_if_fail (E_IS_SOURCE_SELECTOR (selector));
g_return_if_fail (E_IS_SOURCE (source));
if (source_is_selected (selector, source))
return;
select_source (selector, source);
g_signal_emit (selector, signals[SELECTION_CHANGED], 0);
}
/**
* e_source_selector_unselect_source:
* @selector: An ESourceSelector widget
* @source: An ESource.
*
* Unselect @source in @selector.
**/
void
e_source_selector_unselect_source (ESourceSelector *selector,
ESource *source)
{
g_return_if_fail (E_IS_SOURCE_SELECTOR (selector));
g_return_if_fail (E_IS_SOURCE (source));
if (! source_is_selected (selector, source))
return;
unselect_source (selector, source);
g_signal_emit (selector, signals[SELECTION_CHANGED], 0);
}
/**
* e_source_selector_source_is_selected:
* @selector: An ESourceSelector widget
* @source: An ESource.
*
* Check whether @source is selected in @selector.
*
* Return value: %TRUE if @source is currently selected, %FALSE otherwise.
**/
gboolean
e_source_selector_source_is_selected (ESourceSelector *selector,
ESource *source)
{
g_return_val_if_fail (E_IS_SOURCE_SELECTOR (selector), FALSE);
g_return_val_if_fail (E_IS_SOURCE (source), FALSE);
return source_is_selected (selector, source);
}
/**
* e_source_selector_peek_primary_selection:
* @selector: An ESourceSelector widget
*
* Get the primary selected source. The primary selection is the one that is
* highlighted through the normal GtkTreeView selection mechanism (as opposed
* to the "normal" selection, which is the set of source whose checkboxes are
* checked).
*
* Return value: The selected source.
**/
ESource *
e_source_selector_peek_primary_selection (ESourceSelector *selector)
{
GtkTreeModel *model = GTK_TREE_MODEL (selector->priv->tree_store);
GtkTreeIter iter;
void *data;
if (! gtk_tree_selection_get_selected (gtk_tree_view_get_selection (GTK_TREE_VIEW (selector)), NULL, &iter))
return NULL;
gtk_tree_model_get (model, &iter, 0, &data, -1);
if (! E_IS_SOURCE (data))
return NULL;
return E_SOURCE (data);
}
/**
* e_source_selector_set_primary_selection:
* @selector: An ESourceSelector widget
* @source: Source to select
*
* Set the primary selected source.
**/
void
e_source_selector_set_primary_selection (ESourceSelector *selector,
ESource *source)
{
GtkTreeModel *model = GTK_TREE_MODEL (selector->priv->tree_store);
GtkTreeIter iter;
if (gtk_tree_model_get_iter_first (model, &iter)) {
do {
GtkTreeIter children_iter;
if (gtk_tree_model_iter_children (model, &children_iter, &iter)) {
do {
void *data;
gtk_tree_model_get (model, &iter, 0, &data, -1);
g_assert (E_IS_SOURCE (data));
if (E_SOURCE (data) == source) {
GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (selection));
gtk_tree_selection_select_iter (selection, &children_iter);
return;
}
} while (gtk_tree_model_iter_next (model, &iter));
}
} while (gtk_tree_model_iter_next (model, &iter));
}
g_warning (G_GNUC_FUNCTION ": Cannot find source %p (%s) in selector %p", source, e_source_peek_name (source), selector);
}
E_MAKE_TYPE (e_source_selector, "ESourceSelector", ESourceSelector, class_init, init, PARENT_TYPE)
