Added initial support for global desktop links

svn path=/branches/nautilus-lockdown/; revision=13044

7 files changed, 288 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 3519f83d0..82bb19f46 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2007-07-31	Sayamindu Dasgupta <sayamindu@gmail.com>
+
+		* src/file-manager/fm-directory-view.c: 
+		(file_list_all_are_folders):	  
+		* libnautilus-private/nautilus-desktop-link.[ch]:
+		(nautilus_desktop_link_new_from_file):
+		* libnautilus-private/apps_nautilus_preferences.schemas.in:
+		* libnautilus-private/nautilus-desktop-link-monitor.c:
+		(nautilus_desktop_link_monitor_init):
+		* libnautilus-private/nautilus-global-preferences.h:
+	Initial support for global desktop links (part of Summer of 
+	Code 2007)
+
 2007-07-31  Martin Wehner  <martin.wehner@gmail.com>
 
 	* configure.in:
diff --git a/libnautilus-private/apps_nautilus_preferences.schemas.in b/libnautilus-private/apps_nautilus_preferences.schemas.in
index 64462ab81..13e80d4d5 100644
--- a/libnautilus-private/apps_nautilus_preferences.schemas.in
+++ b/libnautilus-private/apps_nautilus_preferences.schemas.in
@@ -840,6 +840,35 @@ most cases, this should be left alone. -->Sans 10</default>
     </schema>
 
     <schema>
+      <key>/schemas/apps/nautilus/desktop/global_items_visible</key>
+      <applyto>/apps/nautilus/desktop/global_items_visible</applyto>
+      <owner>nautilus</owner>
+      <type>bool</type>
+      <default>false</default>
+      <locale name="C">
+      	<short>Global items visible on the desktop</short>
+	<long>
+	  If this is set to true, global desktop items will be shown on the 
+      desktop.
+	</long>
+      </locale>
+    </schema>
+
+    <schema>
+      <key>/schemas/apps/nautilus/desktop/global_items_dir</key>
+      <applyto>/apps/nautilus/desktop/global_items_dir</applyto>
+      <owner>nautilus</owner>
+      <type>string</type>
+      <locale name="C">
+      	<short>Directory for storing global desktop items</short>
+	<long>
+      Location of the desktop item directories.
+	</long>
+      </locale>
+    </schema>
+
+
+    <schema>
       <key>/schemas/apps/nautilus/desktop/computer_icon_name</key>
       <applyto>/apps/nautilus/desktop/computer_icon_name</applyto>
       <owner>nautilus</owner>
diff --git a/libnautilus-private/nautilus-desktop-link-monitor.c b/libnautilus-private/nautilus-desktop-link-monitor.c
index 6469c6a85..81501d7c7 100644
--- a/libnautilus-private/nautilus-desktop-link-monitor.c
+++ b/libnautilus-private/nautilus-desktop-link-monitor.c
@@ -41,11 +41,13 @@
 #include <glib/gi18n.h>
 #include <libgnomevfs/gnome-vfs.h>
 #include <libgnomevfs/gnome-vfs-volume-monitor.h>
+#include <libgnome/gnome-desktop-item.h>
 #include <libnautilus-private/nautilus-trash-monitor.h>
 #include <string.h>
 
 struct NautilusDesktopLinkMonitorDetails {
 	NautilusDirectory *desktop_dir;
+    NautilusDirectory *global_dir;
 	
 	NautilusDesktopLink *home_link;
 	NautilusDesktopLink *computer_link;
@@ -56,6 +58,9 @@ struct NautilusDesktopLinkMonitorDetails {
 	gulong unmount_id;
 	
 	GList *volume_links;
+    GList *global_links;
+
+    void *global_dir_client;
 };
 
 
@@ -151,6 +156,7 @@ nautilus_desktop_link_monitor_delete_link (NautilusDesktopLinkMonitor *monitor,
 	case NAUTILUS_DESKTOP_LINK_COMPUTER:
 	case NAUTILUS_DESKTOP_LINK_TRASH:
 	case NAUTILUS_DESKTOP_LINK_NETWORK:
+    case NAUTILUS_DESKTOP_LINK_GLOBAL:
 		/* just ignore. We don't allow you to delete these */
 		break;
 	default:
@@ -347,6 +353,109 @@ desktop_volumes_visible_changed (gpointer callback_data)
 	}
 }
 
+
+static gint
+compare_link_file(NautilusDesktopLink *link, NautilusFile *file) {
+    NautilusFile *other_file;
+
+    other_file = nautilus_desktop_link_get_file(link);
+
+    /* FIXME: Is this the right way to compare two NautilusFiles ? */
+    return g_utf8_collate(nautilus_file_get_uri(other_file), 
+            (nautilus_file_get_uri(file)));
+
+    nautilus_file_unref(other_file);
+}
+
+static void
+global_dir_files_added (NautilusDirectory *directory, GList *changed_files, gpointer callback_data) 
+{
+    NautilusDesktopLinkMonitor *monitor;
+    GList *l;
+
+    monitor = NAUTILUS_DESKTOP_LINK_MONITOR (callback_data);
+
+    for (l = changed_files; l != NULL; l = l->next) {
+	    /* We filter out anything other than .desktop files */
+        if (g_str_has_suffix(nautilus_file_get_uri(NAUTILUS_FILE(l->data)), ".desktop")) { 
+            monitor->details->global_links = g_list_prepend (monitor->details->global_links, 
+                    nautilus_desktop_link_new_from_file(NAUTILUS_FILE(l->data)));
+        }
+    }
+}
+
+static void 
+global_dir_files_changed (NautilusDirectory *directory, GList *changed_files, gpointer callback_data) {
+    NautilusDesktopLinkMonitor *monitor;
+    GList *l, *deleted_link;
+    deleted_link = NULL;
+
+    monitor = NAUTILUS_DESKTOP_LINK_MONITOR (callback_data);
+
+    for (l = changed_files; l != NULL; l = l->next) {
+        if (nautilus_file_is_gone (l->data)) {/* We need to run this only if a file gets deleted */
+            deleted_link = 
+                g_list_find_custom(monitor->details->global_links, NAUTILUS_FILE(l->data), 
+                        (GCompareFunc )compare_link_file);
+
+            if (deleted_link != NULL) { /* Found a link, unref it */
+                
+                NAUTILUS_DESKTOP_LINK_MONITOR(callback_data)->details->global_links =
+                    g_list_remove_link(monitor->details->global_links, deleted_link);                
+                g_object_unref(deleted_link->data);
+                g_list_free(deleted_link);
+                deleted_link = NULL;
+            }
+        }   
+    }
+}
+
+static void
+desktop_global_items_visible_changed (gpointer callback_data)
+{
+    NautilusDesktopLinkMonitor *monitor;
+    gchar *global_dir_uri;
+
+    monitor = NAUTILUS_DESKTOP_LINK_MONITOR (callback_data);
+
+    if (eel_preferences_get_boolean (NAUTILUS_PREFERENCES_DESKTOP_GLOBAL_ITEMS_VISIBLE)) {     
+	    if (monitor->details->global_links == NULL) {
+            global_dir_uri = eel_preferences_get(NAUTILUS_PREFERENCES_DESKTOP_GLOBAL_ITEMS_DIR);
+
+            if (global_dir_uri == NULL || !g_utf8_collate(global_dir_uri, "")) /* Just a sanity check */
+        	    return;
+
+        	monitor->details->global_dir = nautilus_directory_get(global_dir_uri);
+
+        	monitor->details->global_dir_client = g_new0 (int, 1);
+
+            nautilus_directory_file_monitor_add (monitor->details->global_dir,
+                monitor->details->global_dir_client, FALSE, FALSE,
+                NAUTILUS_FILE_ATTRIBUTE_METADATA,
+                global_dir_files_added, monitor);
+
+    	    g_signal_connect (monitor->details->global_dir, "files_added", 
+                    G_CALLBACK (global_dir_files_added), monitor);
+    	    g_signal_connect (monitor->details->global_dir, "files_changed", 
+                    G_CALLBACK (global_dir_files_changed), monitor);
+
+        }
+    }	
+    else {
+        if (monitor->details->global_links != NULL) {
+            g_list_foreach (monitor->details->global_links, (GFunc)g_object_unref, NULL);
+    	    g_list_free (monitor->details->global_links);
+	        monitor->details->global_links = NULL;
+
+    	    nautilus_directory_file_monitor_remove (monitor->details->global_dir, 
+                    monitor->details->global_dir_client);
+	        nautilus_directory_unref (monitor->details->global_dir);
+    	    monitor->details->global_dir = NULL;
+        }
+    }
+
+}
+
 static void
 create_link_and_add_preference (NautilusDesktopLink   **link_ref,
 				NautilusDesktopLinkType link_type,
@@ -368,6 +477,7 @@ nautilus_desktop_link_monitor_init (gpointer object, gpointer klass)
 	GList *l, *volumes;
 	GnomeVFSVolume *volume;
 	GnomeVFSVolumeMonitor *volume_monitor;
+    char *global_dir_uri;
 
 	monitor = NAUTILUS_DESKTOP_LINK_MONITOR (object);
 
@@ -425,6 +535,34 @@ nautilus_desktop_link_monitor_init (gpointer object, gpointer klass)
 	monitor->details->unmount_id = g_signal_connect_object (volume_monitor, "volume_unmounted",
 								G_CALLBACK (volume_unmounted_callback), monitor, 0);
 
+    /* Global Items */
+
+    global_dir_uri = eel_preferences_get(NAUTILUS_PREFERENCES_DESKTOP_GLOBAL_ITEMS_DIR);
+
+    if (eel_preferences_get_boolean (NAUTILUS_PREFERENCES_DESKTOP_GLOBAL_ITEMS_VISIBLE) 
+            && global_dir_uri != NULL && g_utf8_collate(global_dir_uri, "")) {
+        
+        monitor->details->global_dir = nautilus_directory_get(global_dir_uri);
+
+        monitor->details->global_dir_client = g_new0 (int, 1);
+
+        nautilus_directory_file_monitor_add (monitor->details->global_dir,
+            monitor->details->global_dir_client, FALSE, FALSE,
+            NAUTILUS_FILE_ATTRIBUTE_METADATA,
+            global_dir_files_added, monitor);
+
+        g_signal_connect (monitor->details->global_dir, 
+                "files_added", G_CALLBACK (global_dir_files_added), monitor);
+        g_signal_connect (monitor->details->global_dir, 
+                "files_changed", G_CALLBACK (global_dir_files_changed), monitor);
+
+    }
+    
+
+    eel_preferences_add_callback (NAUTILUS_PREFERENCES_DESKTOP_GLOBAL_ITEMS_VISIBLE,
+                                  desktop_global_items_visible_changed,
+                                  monitor);
+    
 }
 
 static void
@@ -489,6 +627,16 @@ desktop_link_monitor_finalize (GObject *object)
 	if (monitor->details->unmount_id != 0) {
 		g_source_remove (monitor->details->unmount_id);
 	}
+
+    /* Global Items */
+
+    g_list_foreach (monitor->details->global_links, (GFunc)g_object_unref, NULL);
+    g_list_free (monitor->details->global_links);
+    monitor->details->global_links = NULL;
+
+    nautilus_directory_file_monitor_remove (monitor->details->global_dir, monitor->details->global_dir_client);
+    nautilus_directory_unref (monitor->details->global_dir);
+    monitor->details->global_dir = NULL;
 	
 	g_free (monitor->details);
 
diff --git a/libnautilus-private/nautilus-desktop-link.c b/libnautilus-private/nautilus-desktop-link.c
index e27bac458..3d868ae63 100644
--- a/libnautilus-private/nautilus-desktop-link.c
+++ b/libnautilus-private/nautilus-desktop-link.c
@@ -28,12 +28,15 @@
 #include "nautilus-desktop-icon-file.h"
 #include "nautilus-directory-private.h"
 #include "nautilus-desktop-directory.h"
+#include "nautilus-icon-factory.h"
+#include "nautilus-mime-actions.h"
 
 #include <eel/eel-gtk-macros.h>
 #include <eel/eel-vfs-extensions.h>
 #include <gtk/gtksignal.h>
 #include <glib/gi18n.h>
 #include <libgnomevfs/gnome-vfs.h>
+#include <libgnome/gnome-desktop-item.h>
 #include <libnautilus-private/nautilus-file-utilities.h>
 #include <libnautilus-private/nautilus-trash-monitor.h>
 #include <libnautilus-private/nautilus-global-preferences.h>
@@ -56,6 +59,9 @@ struct NautilusDesktopLinkDetails {
 
 	/* Just for volume icons: */
 	GnomeVFSVolume *volume;
+
+    /* Just for global icons */
+    NautilusFile *file;
 };
 
 static void nautilus_desktop_link_init       (gpointer              object,
@@ -208,6 +214,71 @@ nautilus_desktop_link_new (NautilusDesktopLinkType type)
 	return link;
 }
 
+
+static void
+ready_callback (NautilusFile *file,
+                gpointer callback_data)
+{ 
+    NautilusDesktopLink *link;
+    
+    link = NAUTILUS_DESKTOP_LINK(callback_data);
+    link->details->icon = g_strdup(nautilus_icon_factory_get_icon_for_file(file, FALSE));
+    link->details->filename = nautilus_file_get_name(file);
+    link->details->display_name = nautilus_file_get_display_name(file);
+
+    create_icon_file(link);
+}
+
+static char *
+get_real_activation_url (NautilusFile *file) {
+    GnomeDesktopItem *desktop_file;
+    char *type, *activation_url;
+
+    desktop_file = gnome_desktop_item_new_from_uri(nautilus_file_get_uri(file), 
+            GNOME_DESKTOP_ITEM_LOAD_ONLY_IF_EXISTS, NULL);
+
+    type = g_strdup(gnome_desktop_item_get_string(desktop_file, GNOME_DESKTOP_ITEM_TYPE));
+
+    if (!g_ascii_strcasecmp(type, "Link")) {
+            activation_url = g_strdup(gnome_desktop_item_get_string(desktop_file, 
+                    GNOME_DESKTOP_ITEM_URL));
+    } else if (!g_ascii_strcasecmp(type, "Application")){
+        if (gnome_desktop_item_get_boolean(desktop_file,
+                    GNOME_DESKTOP_ITEM_TERMINAL)) {
+                activation_url = g_strdup (nautilus_file_get_uri(file));
+        }
+        else {
+            activation_url = g_strdup(gnome_desktop_item_get_string(desktop_file,
+                    GNOME_DESKTOP_ITEM_EXEC));
+        }
+    }
+    else {
+        activation_url = g_strdup (nautilus_file_get_uri(file));
+    }
+
+    return (activation_url);
+}
+
+NautilusDesktopLink *
+nautilus_desktop_link_new_from_file (NautilusFile *file) 
+{
+    NautilusDesktopLink *link;
+    NautilusFileAttributes attributes;
+
+    link = NAUTILUS_DESKTOP_LINK (g_object_new (NAUTILUS_TYPE_DESKTOP_LINK, NULL));
+    link->details->type = NAUTILUS_DESKTOP_LINK_GLOBAL;
+    link->details->filename = g_path_get_basename(nautilus_file_get_uri(file));
+    link->details->activation_uri = get_real_activation_url (file);
+    link->details->file = nautilus_file_ref(file);
+    
+    /* TODO: The code below should be replaced by nautilus_file_monitor_add() */
+    attributes = nautilus_mime_actions_get_full_file_attributes();
+    nautilus_file_call_when_ready (link->details->file, attributes, ready_callback, link);
+
+    return link;
+}
+
+
 NautilusDesktopLink *
 nautilus_desktop_link_new_from_volume (GnomeVFSVolume *volume)
 {
@@ -254,6 +325,11 @@ nautilus_desktop_link_get_volume (NautilusDesktopLink *link)
 	return gnome_vfs_volume_ref (link->details->volume);
 }
 
+NautilusFile *
+nautilus_desktop_link_get_file (NautilusDesktopLink *link)
+{
+    return nautilus_file_ref(link->details->file);
+}
 
 NautilusDesktopLinkType
 nautilus_desktop_link_get_link_type  (NautilusDesktopLink *link)
@@ -419,6 +495,10 @@ desktop_link_finalize (GObject *object)
 		gnome_vfs_volume_unref (link->details->volume);
 	}
 
+    if (link->details->type == NAUTILUS_DESKTOP_LINK_GLOBAL) {
+        nautilus_file_unref(link->details->file);
+    }
+
 	g_free (link->details->filename);
 	g_free (link->details->display_name);
 	g_free (link->details->activation_uri);
diff --git a/libnautilus-private/nautilus-desktop-link.h b/libnautilus-private/nautilus-desktop-link.h
index 578e592a2..089af3962 100644
--- a/libnautilus-private/nautilus-desktop-link.h
+++ b/libnautilus-private/nautilus-desktop-link.h
@@ -55,12 +55,14 @@ typedef enum {
 	NAUTILUS_DESKTOP_LINK_COMPUTER,
 	NAUTILUS_DESKTOP_LINK_TRASH,
 	NAUTILUS_DESKTOP_LINK_VOLUME,
-	NAUTILUS_DESKTOP_LINK_NETWORK
+	NAUTILUS_DESKTOP_LINK_NETWORK,
+    NAUTILUS_DESKTOP_LINK_GLOBAL
 } NautilusDesktopLinkType;
 
 GType   nautilus_desktop_link_get_type (void);
 
 NautilusDesktopLink *   nautilus_desktop_link_new                (NautilusDesktopLinkType  type);
+NautilusDesktopLink *   nautilus_desktop_link_new_from_file      (NautilusFile            *file);
 NautilusDesktopLink *   nautilus_desktop_link_new_from_volume    (GnomeVFSVolume          *volume);
 NautilusDesktopLinkType nautilus_desktop_link_get_link_type      (NautilusDesktopLink     *link);
 char *                  nautilus_desktop_link_get_file_name      (NautilusDesktopLink     *link);
@@ -71,6 +73,7 @@ gboolean                nautilus_desktop_link_get_date           (NautilusDeskto
 								  NautilusDateType         date_type,
 								  time_t                  *date);
 GnomeVFSVolume *        nautilus_desktop_link_get_volume         (NautilusDesktopLink     *link);
+NautilusFile *          nautilus_desktop_link_get_file           (NautilusDesktopLink     *link);
 
 gboolean                nautilus_desktop_link_can_rename         (NautilusDesktopLink     *link);
 gboolean                nautilus_desktop_link_rename             (NautilusDesktopLink     *link,
diff --git a/libnautilus-private/nautilus-global-preferences.h b/libnautilus-private/nautilus-global-preferences.h
index f561cc34c..81dd5949d 100644
--- a/libnautilus-private/nautilus-global-preferences.h
+++ b/libnautilus-private/nautilus-global-preferences.h
@@ -188,6 +188,8 @@ typedef enum
 #define NAUTILUS_PREFERENCES_DESKTOP_VOLUMES_VISIBLE	   "desktop/volumes_visible"
 #define NAUTILUS_PREFERENCES_DESKTOP_NETWORK_VISIBLE       "desktop/network_icon_visible"
 #define NAUTILUS_PREFERENCES_DESKTOP_NETWORK_NAME          "desktop/network_icon_name"
+#define NAUTILUS_PREFERENCES_DESKTOP_GLOBAL_ITEMS_VISIBLE  "desktop/global_items_visible"
+#define NAUTILUS_PREFERENCES_DESKTOP_GLOBAL_ITEMS_DIR      "desktop/global_items_dir"
 
 void nautilus_global_preferences_init                      (void);
 char *nautilus_global_preferences_get_default_folder_viewer_preference_as_iid (void);
diff --git a/src/file-manager/fm-directory-view.c b/src/file-manager/fm-directory-view.c
index aa3b26648..1853241df 100644
--- a/src/file-manager/fm-directory-view.c
+++ b/src/file-manager/fm-directory-view.c
@@ -82,6 +82,7 @@
 #include <libnautilus-private/nautilus-clipboard-monitor.h>
 #include <libnautilus-private/nautilus-debug-log.h>
 #include <libnautilus-private/nautilus-desktop-icon-file.h>
+#include <libnautilus-private/nautilus-desktop-link.h>
 #include <libnautilus-private/nautilus-desktop-directory.h>
 #include <libnautilus-private/nautilus-search-directory.h>
 #include <libnautilus-private/nautilus-directory-background.h>
@@ -7265,11 +7266,22 @@ file_list_all_are_folders (GList *file_list)
 {
 	GList *l;
 	NautilusFile *file, *linked_file;
+    NautilusDesktopLink *desktop_link;
 	char *activation_uri;
 	gboolean is_dir;
 	
 	for (l = file_list; l != NULL; l = l->next) {
 		file = NAUTILUS_FILE (l->data);
+        
+        if (NAUTILUS_IS_DESKTOP_ICON_FILE (file)) {
+            desktop_link = 
+                nautilus_desktop_icon_file_get_link(NAUTILUS_DESKTOP_ICON_FILE(file));
+            if (nautilus_desktop_link_get_link_type(desktop_link) == 
+                    NAUTILUS_DESKTOP_LINK_GLOBAL) {
+                return FALSE;
+            }
+        }
+
 		if (nautilus_file_is_nautilus_link (file) &&
 		    !NAUTILUS_IS_DESKTOP_ICON_FILE (file)) {
 			activation_uri = nautilus_file_get_activation_uri (file);