/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* gal-view-collection.c
* Copyright 2000, 2001, Ximian, Inc.
*
* Authors:
* Chris Lahey <clahey@ximian.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License, version 2, as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <config.h>
#include <util/e-i18n.h>
#include <sys/stat.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <libxml/parser.h>
#include <libgnome/gnome-util.h>
#include <gal/util/e-util.h>
#include <gal/util/e-xml-utils.h>
#include <gal/widgets/e-unicode.h>
#include "gal-view-collection.h"
#define PARENT_TYPE G_TYPE_OBJECT
static GObjectClass *gal_view_collection_parent_class;
#define d(x)
enum {
DISPLAY_VIEW,
CHANGED,
LAST_SIGNAL
};
static guint gal_view_collection_signals [LAST_SIGNAL] = { 0, };
/**
* gal_view_collection_display_view:
* @collection: The GalViewCollection to send the signal on.
* @view: The view to display.
*
*/
void
gal_view_collection_display_view (GalViewCollection *collection,
GalView *view)
{
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_return_if_fail (view != NULL);
g_return_if_fail (GAL_IS_VIEW (view));
g_signal_emit (collection,
gal_view_collection_signals [DISPLAY_VIEW], 0,
view);
}
static void
gal_view_collection_changed (GalViewCollection *collection)
{
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_signal_emit (collection,
gal_view_collection_signals [CHANGED], 0);
}
static void
gal_view_collection_item_free (GalViewCollectionItem *item)
{
g_free(item->id);
if (item->view) {
if (item->view_changed_id)
g_signal_handler_disconnect (item->view,
item->view_changed_id);
g_object_unref(item->view);
}
g_free(item);
}
static char *
gal_view_generate_string (GalViewCollection *collection,
GalView *view,
int which)
{
char *ret_val;
char *pointer;
if (which == 1)
ret_val = g_strdup(gal_view_get_title(view));
else
ret_val = g_strdup_printf("%s_%d", gal_view_get_title(view), which);
for (pointer = ret_val; *pointer; pointer++) {
if (!isalnum((guint) *pointer)) {
*pointer = '_';
}
}
return ret_val;
}
static gint
gal_view_check_string (GalViewCollection *collection,
char *string)
{
int i;
if (!strcmp (string, "current_view"))
return FALSE;
for (i = 0; i < collection->view_count; i++) {
if (!strcmp(string, collection->view_data[i]->id))
return FALSE;
}
for (i = 0; i < collection->removed_view_count; i++) {
if (!strcmp(string, collection->removed_view_data[i]->id))
return FALSE;
}
return TRUE;
}
static char *
gal_view_generate_id (GalViewCollection *collection,
GalView *view)
{
int i;
for (i = 1; TRUE; i++) {
char *try;
try = gal_view_generate_string(collection, view, i);
if (gal_view_check_string(collection, try))
return try;
g_free(try);
}
}
static void
gal_view_collection_dispose (GObject *object)
{
GalViewCollection *collection = GAL_VIEW_COLLECTION(object);
int i;
for (i = 0; i < collection->view_count; i++) {
gal_view_collection_item_free (collection->view_data[i]);
}
g_free (collection->view_data);
collection->view_data = NULL;
collection->view_count = 0;
e_free_object_list (collection->factory_list);
collection->factory_list = NULL;
for (i = 0; i < collection->removed_view_count; i++) {
gal_view_collection_item_free (collection->removed_view_data[i]);
}
g_free(collection->removed_view_data);
collection->removed_view_data = NULL;
collection->removed_view_count = 0;
g_free(collection->system_dir);
collection->system_dir = NULL;
g_free(collection->local_dir);
collection->system_dir = NULL;
collection->local_dir = NULL;
g_free (collection->default_view);
collection->default_view = NULL;
g_free (collection->title);
collection->title = NULL;
if (gal_view_collection_parent_class->dispose)
(*gal_view_collection_parent_class->dispose)(object);
}
static void
gal_view_collection_class_init (GObjectClass *object_class)
{
GalViewCollectionClass *klass = GAL_VIEW_COLLECTION_CLASS(object_class);
gal_view_collection_parent_class = g_type_class_ref (PARENT_TYPE);
object_class->dispose = gal_view_collection_dispose;
gal_view_collection_signals [DISPLAY_VIEW] =
g_signal_new ("display_view",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GalViewCollectionClass, display_view),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GAL_VIEW_TYPE);
gal_view_collection_signals [CHANGED] =
g_signal_new ("changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GalViewCollectionClass, changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
klass->display_view = NULL;
klass->changed = NULL;
}
static void
gal_view_collection_init (GalViewCollection *collection)
{
collection->view_data = NULL;
collection->view_count = 0;
collection->factory_list = NULL;
collection->removed_view_data = NULL;
collection->removed_view_count = 0;
collection->system_dir = NULL;
collection->local_dir = NULL;
collection->loaded = FALSE;
collection->default_view = NULL;
collection->default_view_built_in = TRUE;
collection->title = NULL;
}
E_MAKE_TYPE(gal_view_collection, "GalViewCollection", GalViewCollection, gal_view_collection_class_init, gal_view_collection_init, PARENT_TYPE)
/**
* gal_view_collection_new:
*
* A collection of views and view factories.
*/
GalViewCollection *
gal_view_collection_new (void)
{
return g_object_new (GAL_VIEW_COLLECTION_TYPE, NULL);
}
void
gal_view_collection_set_title (GalViewCollection *collection,
const char *title)
{
g_free (collection->title);
collection->title = g_strdup (title);
}
/**
* gal_view_collection_set_storage_directories
* @collection: The view collection to initialize
* @system_dir: The location of the system built in views
* @local_dir: The location to store the users set up views
*
* Sets up the GalViewCollection.
*/
void
gal_view_collection_set_storage_directories (GalViewCollection *collection,
const char *system_dir,
const char *local_dir)
{
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_return_if_fail (system_dir != NULL);
g_return_if_fail (local_dir != NULL);
g_free(collection->system_dir);
g_free(collection->local_dir);
collection->system_dir = g_strdup(system_dir);
collection->local_dir = g_strdup(local_dir);
}
/**
* gal_view_collection_add_factory
* @collection: The view collection to add a factory to
* @factory: The factory to add. The @collection will add a reference
* to the factory object, so you should unref it after calling this
* function if you no longer need it.
*
* Adds the given factory to this collection. This list is used both
* when loading views from their xml description as well as when the
* user tries to create a new view.
*/
void
gal_view_collection_add_factory (GalViewCollection *collection,
GalViewFactory *factory)
{
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_return_if_fail (factory != NULL);
g_return_if_fail (GAL_IS_VIEW_FACTORY (factory));
g_object_ref (factory);
collection->factory_list = g_list_prepend (collection->factory_list, factory);
}
static void
view_changed (GalView *view,
GalViewCollectionItem *item)
{
item->changed = TRUE;
item->ever_changed = TRUE;
g_signal_handler_block(G_OBJECT(item->view), item->view_changed_id);
gal_view_collection_changed(item->collection);
g_signal_handler_unblock(G_OBJECT(item->view), item->view_changed_id);
}
/* Use factory list to load a GalView file. */
static GalView *
gal_view_collection_real_load_view_from_file (GalViewCollection *collection, const char *type, const char *title, const char *dir, const char *filename)
{
GalViewFactory *factory;
GList *factories;
factory = NULL;
for (factories = collection->factory_list; factories; factories = factories->next) {
if (type && !strcmp(gal_view_factory_get_type_code(factories->data), type)) {
factory = factories->data;
break;
}
}
if (factory) {
GalView *view;
view = gal_view_factory_new_view (factory, title);
gal_view_set_title (view, title);
gal_view_load(view, filename);
return view;
}
return NULL;
}
GalView *
gal_view_collection_load_view_from_file (GalViewCollection *collection, const char *type, const char *filename)
{
return gal_view_collection_real_load_view_from_file (collection, type, "", collection->local_dir, filename);
}
static GalViewCollectionItem *
load_single_file (GalViewCollection *collection,
gchar *dir,
gboolean local,
xmlNode *node)
{
GalViewCollectionItem *item;
item = g_new(GalViewCollectionItem, 1);
item->ever_changed = local;
item->changed = FALSE;
item->built_in = !local;
item->id = e_xml_get_string_prop_by_name(node, "id");
item->filename = e_xml_get_string_prop_by_name(node, "filename");
item->title = e_xml_get_translated_utf8_string_prop_by_name(node, "title");
item->type = e_xml_get_string_prop_by_name(node, "type");
item->collection = collection;
item->view_changed_id = 0;
if (item->filename) {
char *fullpath;
fullpath = g_concat_dir_and_file(dir, item->filename);
item->view = gal_view_collection_real_load_view_from_file (collection, item->type, item->title, dir, fullpath);
g_free(fullpath);
if (item->view) {
item->view_changed_id =
g_signal_connect(item->view, "changed",
G_CALLBACK(view_changed), item);
}
}
return item;
}
static void
load_single_dir (GalViewCollection *collection,
char *dir,
gboolean local)
{
xmlDoc *doc = NULL;
xmlNode *root;
xmlNode *child;
char *filename = g_concat_dir_and_file(dir, "galview.xml");
char *default_view;
struct stat st;
if (stat (filename, &st) != -1 && S_ISREG (st.st_mode))
doc = xmlParseFile (filename);
if (!doc) {
g_free (filename);
return;
}
root = xmlDocGetRootElement(doc);
for (child = root->xmlChildrenNode; child; child = child->next) {
gchar *id;
gboolean found = FALSE;
int i;
if (!strcmp (child->name, "text"))
continue;
id = e_xml_get_string_prop_by_name(child, "id");
for (i = 0; i < collection->view_count; i++) {
if (!strcmp(id, collection->view_data[i]->id)) {
if (!local)
collection->view_data[i]->built_in = TRUE;
found = TRUE;
break;
}
}
if (!found) {
for (i = 0; i < collection->removed_view_count; i++) {
if (!strcmp(id, collection->removed_view_data[i]->id)) {
if (!local)
collection->removed_view_data[i]->built_in = TRUE;
found = TRUE;
break;
}
}
}
if (!found) {
GalViewCollectionItem *item = load_single_file (collection, dir, local, child);
if (item->filename && *item->filename) {
collection->view_data = g_renew(GalViewCollectionItem *, collection->view_data, collection->view_count + 1);
collection->view_data[collection->view_count] = item;
collection->view_count ++;
} else {
collection->removed_view_data = g_renew(GalViewCollectionItem *, collection->removed_view_data, collection->removed_view_count + 1);
collection->removed_view_data[collection->removed_view_count] = item;
collection->removed_view_count ++;
}
}
g_free(id);
}
default_view = e_xml_get_string_prop_by_name (root, "default-view");
if (default_view) {
if (local)
collection->default_view_built_in = FALSE;
else
collection->default_view_built_in = TRUE;
g_free (collection->default_view);
collection->default_view = default_view;
}
g_free(filename);
xmlFreeDoc(doc);
}
/**
* gal_view_collection_load
* @collection: The view collection to load information for
*
* Loads the data from the system and user directories specified in
* set storage directories. This is primarily for internal use by
* other parts of gal_view.
*/
void
gal_view_collection_load (GalViewCollection *collection)
{
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_return_if_fail (collection->local_dir != NULL);
g_return_if_fail (collection->system_dir != NULL);
g_return_if_fail (!collection->loaded);
if ((e_create_directory(collection->local_dir) == -1) && (errno != EEXIST))
g_warning ("Unable to create dir %s: %s", collection->local_dir, g_strerror(errno));
load_single_dir(collection, collection->local_dir, TRUE);
load_single_dir(collection, collection->system_dir, FALSE);
gal_view_collection_changed(collection);
collection->loaded = TRUE;
}
/**
* gal_view_collection_save
* @collection: The view collection to save information for
*
* Saves the data to the user directory specified in set storage
* directories. This is primarily for internal use by other parts of
* gal_view.
*/
void
gal_view_collection_save (GalViewCollection *collection)
{
int i;
xmlDoc *doc;
xmlNode *root;
char *filename;
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_return_if_fail (collection->local_dir != NULL);
doc = xmlNewDoc("1.0");
root = xmlNewNode(NULL, "GalViewCollection");
xmlDocSetRootElement(doc, root);
if (collection->default_view && !collection->default_view_built_in) {
e_xml_set_string_prop_by_name(root, "default-view", collection->default_view);
}
for (i = 0; i < collection->view_count; i++) {
xmlNode *child;
GalViewCollectionItem *item;
item = collection->view_data[i];
if (item->ever_changed) {
child = xmlNewChild(root, NULL, "GalView", NULL);
e_xml_set_string_prop_by_name(child, "id", item->id);
e_xml_set_string_prop_by_name(child, "title", item->title);
e_xml_set_string_prop_by_name(child, "filename", item->filename);
e_xml_set_string_prop_by_name(child, "type", item->type);
if (item->changed) {
filename = g_concat_dir_and_file(collection->local_dir, item->filename);
gal_view_save(item->view, filename);
g_free(filename);
}
}
}
for (i = 0; i < collection->removed_view_count; i++) {
xmlNode *child;
GalViewCollectionItem *item;
item = collection->removed_view_data[i];
child = xmlNewChild(root, NULL, "GalView", NULL);
e_xml_set_string_prop_by_name(child, "id", item->id);
e_xml_set_string_prop_by_name(child, "title", item->title);
e_xml_set_string_prop_by_name(child, "type", item->type);
}
filename = g_concat_dir_and_file(collection->local_dir, "galview.xml");
if (e_xml_save_file (filename, doc) == -1)
g_warning ("Unable to save view to %s - %s", filename, g_strerror(errno));
xmlFreeDoc(doc);
g_free(filename);
}
/**
* gal_view_collection_get_count
* @collection: The view collection to count
*
* Calculates the number of views in the given collection.
*
* Returns: The number of views in the collection.
*/
gint
gal_view_collection_get_count (GalViewCollection *collection)
{
g_return_val_if_fail (collection != NULL, -1);
g_return_val_if_fail (GAL_IS_VIEW_COLLECTION (collection), -1);
return collection->view_count;
}
/**
* gal_view_collection_get_view
* @collection: The view collection to query
* @n: The view to get.
*
* Returns: The nth view in the collection
*/
GalView *
gal_view_collection_get_view (GalViewCollection *collection,
int n)
{
g_return_val_if_fail (collection != NULL, NULL);
g_return_val_if_fail (GAL_IS_VIEW_COLLECTION (collection), NULL);
g_return_val_if_fail (n < collection->view_count, NULL);
g_return_val_if_fail (n >= 0, NULL);
return collection->view_data[n]->view;
}
/**
* gal_view_collection_get_view_item
* @collection: The view collection to query
* @n: The view item to get.
*
* Returns: The nth view item in the collection
*/
GalViewCollectionItem *
gal_view_collection_get_view_item (GalViewCollection *collection,
int n)
{
g_return_val_if_fail (collection != NULL, NULL);
g_return_val_if_fail (GAL_IS_VIEW_COLLECTION (collection), NULL);
g_return_val_if_fail(n < collection->view_count, NULL);
g_return_val_if_fail(n >= 0, NULL);
return collection->view_data[n];
}
int
gal_view_collection_get_view_index_by_id (GalViewCollection *collection, const char *view_id)
{
int i;
for (i = 0; i < collection->view_count; i++) {
if (!strcmp (collection->view_data[i]->id, view_id))
return i;
}
return -1;
}
char *
gal_view_collection_get_view_id_by_index (GalViewCollection *collection, int n)
{
g_return_val_if_fail (collection != NULL, NULL);
g_return_val_if_fail (GAL_IS_VIEW_COLLECTION (collection), NULL);
g_return_val_if_fail(n < collection->view_count, NULL);
g_return_val_if_fail(n >= 0, NULL);
return g_strdup (collection->view_data[n]->id);
}
void
gal_view_collection_append (GalViewCollection *collection,
GalView *view)
{
GalViewCollectionItem *item;
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_return_if_fail (view != NULL);
g_return_if_fail (GAL_IS_VIEW (view));
item = g_new(GalViewCollectionItem, 1);
item->ever_changed = TRUE;
item->changed = TRUE;
item->built_in = FALSE;
item->title = g_strdup(gal_view_get_title(view));
item->type = g_strdup(gal_view_get_type_code(view));
item->id = gal_view_generate_id(collection, view);
item->filename = g_strdup_printf("%s.galview", item->id);
item->view = view;
item->collection = collection;
g_object_ref(view);
item->view_changed_id =
g_signal_connect(item->view, "changed",
G_CALLBACK (view_changed), item);
collection->view_data = g_renew(GalViewCollectionItem *, collection->view_data, collection->view_count + 1);
collection->view_data[collection->view_count] = item;
collection->view_count ++;
gal_view_collection_changed(collection);
}
void
gal_view_collection_delete_view (GalViewCollection *collection,
int i)
{
GalViewCollectionItem *item;
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_return_if_fail (i >= 0 && i < collection->view_count);
item = collection->view_data[i];
memmove(collection->view_data + i, collection->view_data + i + 1, (collection->view_count - i - 1) * sizeof(GalViewCollectionItem *));
collection->view_count --;
if (item->built_in) {
g_free(item->filename);
item->filename = NULL;
collection->removed_view_data = g_renew(GalViewCollectionItem *, collection->removed_view_data, collection->removed_view_count + 1);
collection->removed_view_data[collection->removed_view_count] = item;
collection->removed_view_count ++;
} else {
gal_view_collection_item_free (item);
}
gal_view_collection_changed(collection);
}
void
gal_view_collection_copy_view (GalViewCollection *collection,
int i)
{
GalViewCollectionItem *item;
GalView *view;
g_return_if_fail (collection != NULL);
g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
g_return_if_fail (i >= 0 && i < collection->view_count);
view = collection->view_data[i]->view;
item = g_new(GalViewCollectionItem, 1);
item->ever_changed = TRUE;
item->changed = FALSE;
item->built_in = FALSE;
item->title = g_strdup(gal_view_get_title(view));
item->type = g_strdup(gal_view_get_type_code(view));
item->id = gal_view_generate_id(collection, view);
item->filename = g_strdup_printf("%s.galview", item->id);
item->view = gal_view_clone(view);
item->collection = collection;
item->view_changed_id =
g_signal_connect(item->view, "changed",
G_CALLBACK (view_changed), item);
collection->view_data = g_renew(GalViewCollectionItem *, collection->view_data, collection->view_count + 1);
collection->view_data[collection->view_count] = item;
collection->view_count ++;
gal_view_collection_changed(collection);
}
gboolean
gal_view_collection_loaded (GalViewCollection *collection)
{
return collection->loaded;
}
const char *
gal_view_collection_append_with_title (GalViewCollection *collection, const char *title, GalView *view)
{
GalViewCollectionItem *item;
g_return_val_if_fail (collection != NULL, NULL);
g_return_val_if_fail (GAL_IS_VIEW_COLLECTION (collection), NULL);
g_return_val_if_fail (view != NULL, NULL);
g_return_val_if_fail (GAL_IS_VIEW (view), NULL);
gal_view_set_title (view, title);
d(g_print("%s: %p\n", G_GNUC_FUNCTION, view));
item = g_new(GalViewCollectionItem, 1);
item->ever_changed = TRUE;
item->changed = TRUE;
item->built_in = FALSE;
item->title = g_strdup(gal_view_get_title(view));
item->type = g_strdup(gal_view_get_type_code(view));
item->id = gal_view_generate_id(collection, view);
item->filename = g_strdup_printf("%s.galview", item->id);
item->view = view;
item->collection = collection;
g_object_ref(view);
item->view_changed_id =
g_signal_connect(item->view, "changed",
G_CALLBACK (view_changed), item);
collection->view_data = g_renew(GalViewCollectionItem *, collection->view_data, collection->view_count + 1);
collection->view_data[collection->view_count] = item;
collection->view_count ++;
gal_view_collection_changed(collection);
return item->id;
}
const char *
gal_view_collection_set_nth_view (GalViewCollection *collection, int i, GalView *view)
{
GalViewCollectionItem *item;
g_return_val_if_fail (collection != NULL, NULL);
g_return_val_if_fail (GAL_IS_VIEW_COLLECTION (collection), NULL);
g_return_val_if_fail (view != NULL, NULL);
g_return_val_if_fail (GAL_IS_VIEW (view), NULL);
g_return_val_if_fail (i >= 0, NULL);
g_return_val_if_fail (i < collection->view_count, NULL);
d(g_print("%s: %p\n", G_GNUC_FUNCTION, view));
item = collection->view_data[i];
gal_view_set_title (view, item->title);
g_object_ref (view);
if (item->view) {
g_signal_handler_disconnect (item->view,
item->view_changed_id);
g_object_unref (item->view);
}
item->view = view;
item->ever_changed = TRUE;
item->changed = TRUE;
item->type = g_strdup(gal_view_get_type_code(view));
item->view_changed_id =
g_signal_connect(item->view, "changed",
G_CALLBACK (view_changed), item);
gal_view_collection_changed (collection);
return item->id;
}
const char *
gal_view_collection_get_default_view (GalViewCollection *collection)
{
return collection->default_view;
}
void
gal_view_collection_set_default_view (GalViewCollection *collection, const char *id)
{
g_free (collection->default_view);
collection->default_view = g_strdup (id);
gal_view_collection_changed (collection);
collection->default_view_built_in = FALSE;
}
