/*
*
* This program 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) version 3.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Chris Lahey <clahey@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gal-view-instance.h"
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <gtk/gtk.h>
#include <libxml/parser.h>
#include <glib/gstdio.h>
#include <glib/gi18n.h>
#include <libedataserver/libedataserver.h>
#include "e-unicode.h"
#include "e-xml-utils.h"
#include "gal-view-instance-save-as-dialog.h"
G_DEFINE_TYPE (GalViewInstance, gal_view_instance, G_TYPE_OBJECT)
#define d(x)
enum {
DISPLAY_VIEW,
CHANGED,
LOADED,
LAST_SIGNAL
};
static guint gal_view_instance_signals[LAST_SIGNAL] = { 0, };
static void
gal_view_instance_changed (GalViewInstance *instance)
{
g_return_if_fail (instance != NULL);
g_return_if_fail (GAL_IS_VIEW_INSTANCE (instance));
g_signal_emit (
instance,
gal_view_instance_signals[CHANGED], 0);
}
static void
gal_view_instance_display_view (GalViewInstance *instance,
GalView *view)
{
g_return_if_fail (instance != NULL);
g_return_if_fail (GAL_IS_VIEW_INSTANCE (instance));
g_signal_emit (
instance,
gal_view_instance_signals[DISPLAY_VIEW], 0,
view);
}
static void
save_current_view (GalViewInstance *instance)
{
xmlDoc *doc;
xmlNode *root;
doc = xmlNewDoc ((const guchar *)"1.0");
root = xmlNewNode (NULL, (const guchar *)"GalViewCurrentView");
xmlDocSetRootElement (doc, root);
if (instance->current_id)
e_xml_set_string_prop_by_name (root, (const guchar *)"current_view", instance->current_id);
if (instance->current_type)
e_xml_set_string_prop_by_name (root, (const guchar *)"current_view_type", instance->current_type);
if (e_xml_save_file (instance->current_view_filename, doc) == -1)
g_warning ("Unable to save view to %s - %s", instance->current_view_filename, g_strerror (errno));
xmlFreeDoc (doc);
}
static void
view_changed (GalView *view,
GalViewInstance *instance)
{
if (instance->current_id != NULL) {
g_free (instance->current_id);
instance->current_id = NULL;
save_current_view (instance);
gal_view_instance_changed (instance);
}
gal_view_save (view, instance->custom_filename);
}
static void
disconnect_view (GalViewInstance *instance)
{
if (instance->current_view) {
if (instance->view_changed_id) {
g_signal_handler_disconnect (
instance->current_view,
instance->view_changed_id);
}
g_object_unref (instance->current_view);
}
g_free (instance->current_type);
g_free (instance->current_title);
instance->current_title = NULL;
instance->current_type = NULL;
instance->view_changed_id = 0;
instance->current_view = NULL;
}
static void
connect_view (GalViewInstance *instance,
GalView *view)
{
GalViewClass *view_class;
if (instance->current_view)
disconnect_view (instance);
instance->current_view = g_object_ref (view);
view_class = GAL_VIEW_GET_CLASS (view);
instance->current_title = g_strdup (gal_view_get_title (view));
instance->current_type = g_strdup (view_class->type_code);
instance->view_changed_id = g_signal_connect (
instance->current_view, "changed",
G_CALLBACK (view_changed), instance);
gal_view_instance_display_view (instance, instance->current_view);
}
static void
gal_view_instance_dispose (GObject *object)
{
GalViewInstance *instance = GAL_VIEW_INSTANCE (object);
if (instance->collection) {
if (instance->collection_changed_id) {
g_signal_handler_disconnect (
instance->collection,
instance->collection_changed_id);
}
g_object_unref (instance->collection);
}
g_free (instance->instance_id);
g_free (instance->custom_filename);
g_free (instance->current_view_filename);
g_free (instance->current_id);
disconnect_view (instance);
g_free (instance->default_view);
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (gal_view_instance_parent_class)->dispose (object);
}
static void
gal_view_instance_class_init (GalViewInstanceClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->dispose = gal_view_instance_dispose;
gal_view_instance_signals[DISPLAY_VIEW] = g_signal_new (
"display_view",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GalViewInstanceClass, display_view),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
GAL_TYPE_VIEW);
gal_view_instance_signals[CHANGED] = g_signal_new (
"changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GalViewInstanceClass, changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gal_view_instance_signals[LOADED] = g_signal_new (
"loaded",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GalViewInstanceClass, loaded),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
class->display_view = NULL;
class->changed = NULL;
}
static void
gal_view_instance_init (GalViewInstance *instance)
{
instance->collection = NULL;
instance->instance_id = NULL;
instance->custom_filename = NULL;
instance->current_view_filename = NULL;
instance->current_title = NULL;
instance->current_type = NULL;
instance->current_id = NULL;
instance->current_view = NULL;
instance->view_changed_id = 0;
instance->collection_changed_id = 0;
instance->loaded = FALSE;
instance->default_view = NULL;
}
static void
collection_changed (GalView *view,
GalViewInstance *instance)
{
if (instance->current_id) {
gchar *view_id = instance->current_id;
instance->current_id = NULL;
gal_view_instance_set_current_view_id (instance, view_id);
g_free (view_id);
}
}
static void
load_current_view (GalViewInstance *instance)
{
xmlDoc *doc = NULL;
xmlNode *root;
GalView *view = NULL;
if (g_file_test (instance->current_view_filename, G_FILE_TEST_IS_REGULAR)) {
#ifdef G_OS_WIN32
gchar *locale_filename = g_win32_locale_filename_from_utf8 (instance->current_view_filename);
if (locale_filename != NULL)
doc = xmlParseFile (locale_filename);
g_free (locale_filename);
#else
doc = xmlParseFile (instance->current_view_filename);
#endif
}
if (doc == NULL) {
instance->current_id = g_strdup (gal_view_instance_get_default_view (instance));
if (instance->current_id) {
gint index = gal_view_collection_get_view_index_by_id (
instance->collection,
instance->current_id);
if (index != -1) {
view = gal_view_collection_get_view (
instance->collection, index);
view = gal_view_clone (view);
connect_view (instance, view);
}
}
return;
}
root = xmlDocGetRootElement (doc);
instance->current_id = e_xml_get_string_prop_by_name_with_default (root, (const guchar *)"current_view", NULL);
if (instance->current_id != NULL) {
gint index = gal_view_collection_get_view_index_by_id (
instance->collection,
instance->current_id);
if (index != -1) {
view = gal_view_collection_get_view (
instance->collection, index);
view = gal_view_clone (view);
}
}
if (view == NULL) {
gchar *type;
type = e_xml_get_string_prop_by_name_with_default (root, (const guchar *)"current_view_type", NULL);
view = gal_view_collection_load_view_from_file (
instance->collection, type,
instance->custom_filename);
g_free (type);
}
connect_view (instance, view);
xmlFreeDoc (doc);
}
/**
* gal_view_instance_new:
* @collection: This %GalViewCollection should be loaded before being passed to this function.
* @instance_id: Which instance of this type of object is this (for most of evo, this is the folder id.)
*
* Create a new %GalViewInstance.
*
* Return value: The new %GalViewInstance.
**/
GalViewInstance *
gal_view_instance_new (GalViewCollection *collection,
const gchar *instance_id)
{
GalViewInstance *instance = g_object_new (GAL_TYPE_VIEW_INSTANCE, NULL);
if (gal_view_instance_construct (instance, collection, instance_id))
return instance;
else {
g_object_unref (instance);
return NULL;
}
}
GalViewInstance *
gal_view_instance_construct (GalViewInstance *instance,
GalViewCollection *collection,
const gchar *instance_id)
{
gchar *filename;
gchar *safe_id;
const gchar *user_directory;
instance->collection = collection;
if (collection)
g_object_ref (collection);
instance->collection_changed_id = g_signal_connect (
collection, "changed",
G_CALLBACK (collection_changed), instance);
if (instance_id)
instance->instance_id = g_strdup (instance_id);
else
instance->instance_id = g_strdup ("");
safe_id = g_strdup (instance->instance_id);
e_filename_make_safe (safe_id);
user_directory =
gal_view_collection_get_user_directory (instance->collection);
filename = g_strdup_printf ("custom_view-%s.xml", safe_id);
instance->custom_filename =
g_build_filename (user_directory, filename, NULL);
g_free (filename);
filename = g_strdup_printf ("current_view-%s.xml", safe_id);
instance->current_view_filename =
g_build_filename (user_directory, filename, NULL);
g_free (filename);
g_free (safe_id);
return instance;
}
/* Manipulate the current view. */
gchar *
gal_view_instance_get_current_view_id (GalViewInstance *instance)
{
if (instance->current_id && gal_view_collection_get_view_index_by_id (instance->collection, instance->current_id) != -1)
return g_strdup (instance->current_id);
else
return NULL;
}
void
gal_view_instance_set_current_view_id (GalViewInstance *instance,
const gchar *view_id)
{
GalView *view;
gint index;
g_return_if_fail (instance != NULL);
g_return_if_fail (GAL_IS_VIEW_INSTANCE (instance));
d (g_print ("%s: view_id set to %s\n", G_STRFUNC, view_id));
if (instance->current_id && !strcmp (instance->current_id, view_id))
return;
g_free (instance->current_id);
instance->current_id = g_strdup (view_id);
index = gal_view_collection_get_view_index_by_id (instance->collection, view_id);
if (index != -1) {
view = gal_view_collection_get_view (instance->collection, index);
connect_view (instance, gal_view_clone (view));
}
if (instance->loaded)
save_current_view (instance);
gal_view_instance_changed (instance);
}
GalView *
gal_view_instance_get_current_view (GalViewInstance *instance)
{
return instance->current_view;
}
void
gal_view_instance_set_custom_view (GalViewInstance *instance,
GalView *view)
{
g_free (instance->current_id);
instance->current_id = NULL;
view = gal_view_clone (view);
connect_view (instance, view);
gal_view_save (view, instance->custom_filename);
save_current_view (instance);
gal_view_instance_changed (instance);
}
static void
dialog_response (GtkWidget *dialog,
gint id,
GalViewInstance *instance)
{
if (id == GTK_RESPONSE_OK) {
gal_view_instance_save_as_dialog_save (GAL_VIEW_INSTANCE_SAVE_AS_DIALOG (dialog));
}
gtk_widget_destroy (dialog);
}
void
gal_view_instance_save_as (GalViewInstance *instance)
{
GtkWidget *dialog;
g_return_if_fail (instance != NULL);
dialog = gal_view_instance_save_as_dialog_new (instance);
g_signal_connect (
dialog, "response",
G_CALLBACK (dialog_response), instance);
gtk_widget_show (dialog);
}
/* This is idempotent. Once it's been called once, the rest of the calls are ignored. */
void
gal_view_instance_load (GalViewInstance *instance)
{
if (!instance->loaded) {
load_current_view (instance);
instance->loaded = TRUE;
g_signal_emit (instance, gal_view_instance_signals[LOADED], 0);
}
}
/* These only mean anything before gal_view_instance_load is called the first time. */
const gchar *
gal_view_instance_get_default_view (GalViewInstance *instance)
{
if (instance->default_view)
return instance->default_view;
else
return gal_view_collection_get_default_view (instance->collection);
}
void
gal_view_instance_set_default_view (GalViewInstance *instance,
const gchar *id)
{
g_free (instance->default_view);
instance->default_view = g_strdup (id);
}
gboolean
gal_view_instance_exists (GalViewInstance *instance)
{
struct stat st;
if (instance->current_view_filename && g_stat (instance->current_view_filename, &st) == 0 && st.st_size > 0 && S_ISREG (st.st_mode))
return TRUE;
else
return FALSE;
}
