1 files changed, 331 insertions, 0 deletions
diff --git a/shell/e-storage-browser.c b/shell/e-storage-browser.c
new file mode 100644
index 0000000000..a5452d80c1
--- /dev/null
+++ b/shell/e-storage-browser.c
@@ -0,0 +1,331 @@
+/* -*- 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 <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;
+
+	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);
+
+	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_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)