/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-storage-browser.c
*
* Copyright (C) 2003 Ximian, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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>
*/
/* TODO:
- Currently it assumes that the starting path always exists, and you
can't remove it. It might be a limitation, but it makes the logic
very simple and robust.
- Doesn't save expansion state for nodes.
- Context menu handling?
*/
#include <config.h>
#include "e-storage-browser.h"
#include "e-shell-marshal.h"
#include "e-storage-set-view.h"
#include <gal/util/e-util.h>
#include <gtk/gtknotebook.h>
#include <gtk/gtkscrolledwindow.h>
#include <string.h>
#define PARENT_TYPE G_TYPE_OBJECT
static GObjectClass *parent_class = NULL;
struct _EStorageBrowserPrivate {
char *starting_path;
char *current_path;
GtkWidget *view_notebook;
GtkWidget *storage_set_view;
GtkWidget *storage_set_view_scrolled;
GHashTable *path_to_view; /* (char *, GtkWidget *) */
EStorageBrowserCreateViewCallback create_view_callback;
void *create_view_callback_data;
};
enum {
WIDGETS_GONE,
PAGE_SWITCHED,
NUM_SIGNALS
};
static unsigned int signals[NUM_SIGNALS] = { 0 };
/* Callbacks. */
static void
storage_set_view_folder_selected_callback (EStorageSetView *storage_set_view,
const char *path,
EStorageBrowser *browser)
{
if (! e_storage_browser_show_path (browser, path)) {
/* Make the selection go back to where it was. */
e_storage_browser_show_path (browser, browser->priv->current_path);
}
}
static void
storage_set_removed_folder_callback (EStorageSet *storage_set,
const char *path,
EStorageBrowser *browser)
{
if (g_hash_table_lookup (browser->priv->path_to_view, path) != NULL)
e_storage_browser_remove_view_for_path (browser, path);
}
static void
view_notebook_weak_notify (EStorageBrowser *browser)
{
browser->priv->view_notebook = NULL;
if (browser->priv->storage_set_view == NULL)
g_signal_emit (browser, signals[WIDGETS_GONE], 0);
}
static void
storage_set_view_weak_notify (EStorageBrowser *browser)
{
browser->priv->storage_set_view = NULL;
if (browser->priv->view_notebook == NULL)
g_signal_emit (browser, signals[WIDGETS_GONE], 0);
}
/* GObject methods. */
static void
impl_dispose (GObject *object)
{
EStorageBrowserPrivate *priv = E_STORAGE_BROWSER (object)->priv;
if (priv->view_notebook != NULL) {
g_object_weak_unref (G_OBJECT (priv->view_notebook),
(GWeakNotify) view_notebook_weak_notify,
object);
priv->view_notebook = NULL;
}
if (priv->storage_set_view != NULL) {
g_object_weak_unref (G_OBJECT (priv->storage_set_view),
(GWeakNotify) storage_set_view_weak_notify,
object);
priv->storage_set_view = NULL;
}
(* G_OBJECT_CLASS (parent_class)->dispose) (object);
}
static void
impl_finalize (GObject *object)
{
EStorageBrowserPrivate *priv = E_STORAGE_BROWSER (object)->priv;
g_free (priv->starting_path);
g_free (priv->current_path);
g_hash_table_destroy (priv->path_to_view);
g_free (priv);
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
/* Initialization. */
static void
class_init (EStorageBrowserClass *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[WIDGETS_GONE]
= g_signal_new ("widgets_gone",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (EStorageBrowserClass, widgets_gone),
NULL, NULL,
e_shell_marshal_NONE__NONE,
G_TYPE_NONE, 0);
signals[PAGE_SWITCHED]
= g_signal_new ("page_switched",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (EStorageBrowserClass, page_switched),
NULL, NULL,
e_shell_marshal_NONE__POINTER_POINTER,
G_TYPE_NONE, 2,
G_TYPE_POINTER, G_TYPE_POINTER);
}
static void
init (EStorageBrowser *browser)
{
EStorageBrowserPrivate *priv;
priv = g_new0 (EStorageBrowserPrivate, 1);
priv->path_to_view = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_object_unref);
priv->view_notebook = gtk_notebook_new ();
g_object_weak_ref (G_OBJECT (priv->view_notebook), (GWeakNotify) view_notebook_weak_notify, browser);
gtk_notebook_set_show_border (GTK_NOTEBOOK (priv->view_notebook), FALSE);
gtk_notebook_set_show_tabs (GTK_NOTEBOOK (priv->view_notebook), FALSE);
browser->priv = priv;
}
EStorageBrowser *
e_storage_browser_new (EStorageSet *storage_set,
const char *starting_path,
EStorageBrowserCreateViewCallback create_view_callback,
void *callback_data)
{
EStorageBrowser *new;
g_return_val_if_fail (create_view_callback != NULL, NULL);
new = g_object_new (e_storage_browser_get_type (), NULL);
new->priv->create_view_callback = create_view_callback;
new->priv->create_view_callback_data = callback_data;
new->priv->starting_path = g_strdup (starting_path);
new->priv->storage_set_view = e_storage_set_create_new_view (storage_set, NULL);
gtk_widget_show (new->priv->storage_set_view);
new->priv->storage_set_view_scrolled = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (new->priv->storage_set_view_scrolled), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (new->priv->storage_set_view_scrolled), new->priv->storage_set_view);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (new->priv->storage_set_view_scrolled),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
g_object_weak_ref (G_OBJECT (new->priv->storage_set_view), (GWeakNotify) storage_set_view_weak_notify, new);
g_signal_connect_object (new->priv->storage_set_view,
"folder_selected", G_CALLBACK (storage_set_view_folder_selected_callback),
G_OBJECT (new), 0);
g_signal_connect_object (e_storage_set_view_get_storage_set (E_STORAGE_SET_VIEW (new->priv->storage_set_view)),
"removed_folder", G_CALLBACK (storage_set_removed_folder_callback),
G_OBJECT (new), 0);
if (! e_storage_browser_show_path (new, starting_path)) {
g_object_unref (new);
return NULL;
}
return new;
}
GtkWidget *
e_storage_browser_peek_tree_widget (EStorageBrowser *browser)
{
return browser->priv->storage_set_view;
}
GtkWidget *
e_storage_browser_peek_tree_widget_scrolled (EStorageBrowser *browser)
{
return browser->priv->storage_set_view_scrolled;
}
GtkWidget *
e_storage_browser_peek_view_widget (EStorageBrowser *browser)
{
return browser->priv->view_notebook;
}
EStorageSet *
e_storage_browser_peek_storage_set (EStorageBrowser *browser)
{
return e_storage_set_view_get_storage_set (E_STORAGE_SET_VIEW (browser->priv->storage_set_view));
}
gboolean
e_storage_browser_show_path (EStorageBrowser *browser,
const char *path)
{
EStorageBrowserPrivate *priv = browser->priv;
GtkWidget *current_view;
GtkWidget *existing_view;
GtkWidget *new_view;
GtkNotebook *notebook;
notebook = GTK_NOTEBOOK (priv->view_notebook);
current_view = gtk_notebook_get_nth_page (GTK_NOTEBOOK (priv->view_notebook),
gtk_notebook_get_current_page (GTK_NOTEBOOK (priv->view_notebook)));
existing_view = g_hash_table_lookup (priv->path_to_view, path);
if (existing_view != NULL) {
gtk_notebook_set_current_page (notebook, gtk_notebook_page_num (notebook, existing_view));
g_print ("page switched\n");
g_signal_emit (browser, signals[PAGE_SWITCHED], 0, current_view, existing_view);
return TRUE;
}
new_view = (* priv->create_view_callback) (browser, path, priv->create_view_callback_data);
if (new_view == NULL)
return FALSE;
gtk_widget_show (new_view);
gtk_notebook_append_page (notebook, new_view, NULL);
gtk_notebook_set_current_page (notebook, gtk_notebook_page_num (notebook, new_view));
g_print ("page switched\n");
g_signal_emit (browser, signals[PAGE_SWITCHED], 0, current_view, new_view);
g_object_ref(new_view);
g_hash_table_insert (priv->path_to_view, g_strdup (path), new_view);
g_free (priv->current_path);
priv->current_path = g_strdup (path);
e_storage_set_view_set_current_folder (E_STORAGE_SET_VIEW (priv->storage_set_view), path);
return TRUE;
}
void
e_storage_browser_remove_view_for_path (EStorageBrowser *browser,
const char *path)
{
GtkWidget *view;
if (strcmp (path, browser->priv->starting_path) == 0) {
g_warning (G_GNUC_FUNCTION ": cannot remove starting view");
return;
}
view = g_hash_table_lookup (browser->priv->path_to_view, path);
if (view == NULL) {
g_warning (G_GNUC_FUNCTION ": no view for %s", path);
return;
}
g_hash_table_remove (browser->priv->path_to_view, path);
gtk_widget_destroy (view);
e_storage_browser_show_path (browser, browser->priv->starting_path);
}
E_MAKE_TYPE (e_storage_browser, "EStorageBrowser", EStorageBrowser, class_init, init, PARENT_TYPE)
