Moved window manager detection code from keybindings capplet to common

6 files changed, 183 insertions, 149 deletions

diff --git a/capplets/common/ChangeLog b/capplets/common/ChangeLog
index ed696f659..bee1ea977 100644
--- a/capplets/common/ChangeLog
+++ b/capplets/common/ChangeLog
@@ -1,3 +1,9 @@
+2002-06-21  Stephen Browne <stephen.browne@sun.com>
+
+	* wm-common.[ch] : added new files to expose
+	wm_common_get_current_window_manager and 
+	wm_common_register_window_manager_change
+
 2002-06-13  Jody Goldberg <jody@gnome.org>
 
 	* capplet-util.c (capplet_help) : Use the new utility.
diff --git a/capplets/common/Makefile.am b/capplets/common/Makefile.am
index 6cdc0191e..0ae16f431 100644
--- a/capplets/common/Makefile.am
+++ b/capplets/common/Makefile.am
@@ -17,6 +17,7 @@ libcommon_la_SOURCES = \
 	gconf-property-editor.c		gconf-property-editor.h		\
 	gconf-property-editor-marshal.c	gconf-property-editor-marshal.h \
 	file-transfer-dialog.c		file-transfer-dialog.h		\
-	theme-common.c			theme-common.h
+	theme-common.c			theme-common.h			\
+	wm-common.c			wm-common.h
 
 libcommon_la_LIBADD = $(top_builddir)/libbackground/libbackground.la
diff --git a/capplets/common/wm-common.c b/capplets/common/wm-common.c
new file mode 100644
index 000000000..c8ddf462d
--- /dev/null
+++ b/capplets/common/wm-common.c
@@ -0,0 +1,149 @@
+#include <X11/Xatom.h>
+#include <gdk/gdkx.h>
+#include <gdk/gdk.h>
+#include <string.h>
+#include <glib.h>
+#include <glib-object.h>
+#include "wm-common.h"
+
+typedef struct _WMCallbackData
+{
+  GFunc func;
+  gpointer data;
+} WMCallbackData;
+
+/* Our WM Window */
+static Window wm_window = None;
+
+char*
+wm_common_get_current_window_manager (void)
+{
+  Atom utf8_string, atom, type;
+  int result;
+  char *retval;
+  int format;
+  gulong nitems;
+  gulong bytes_after;
+  guchar *val;
+
+  if (wm_window == None)
+      return WM_COMMON_UNKNOWN;
+
+  utf8_string = XInternAtom (GDK_DISPLAY (), "UTF8_STRING", False);
+  atom = XInternAtom (GDK_DISPLAY (), "_NET_WM_NAME", False);
+
+  gdk_error_trap_push ();
+
+  result = XGetWindowProperty (GDK_DISPLAY (),
+		  	       wm_window,
+			       atom,
+			       0, G_MAXLONG,
+			       False, utf8_string,
+			       &type, &format, &nitems,
+			       &bytes_after, (guchar **)&val);
+
+  if (gdk_error_trap_pop () || result != Success)
+    return WM_COMMON_UNKNOWN;
+
+  if (type != utf8_string ||
+      format !=8 ||
+      nitems == 0)
+    {
+      if (val)
+        XFree (val);
+      return WM_COMMON_UNKNOWN;
+    }
+
+  if (!g_utf8_validate (val, nitems, NULL))
+    {
+      XFree (val);
+      return WM_COMMON_UNKNOWN;
+    }
+
+  retval = g_strndup (val, nitems);
+
+  XFree (val);
+
+  return retval;
+}
+
+static void
+update_wm_window (void)
+{
+  Window *xwindow;
+  Atom type;
+  gint format;
+  gulong nitems;
+  gulong bytes_after;
+
+  XGetWindowProperty (GDK_DISPLAY (), GDK_ROOT_WINDOW (),
+		      XInternAtom (GDK_DISPLAY (), "_NET_SUPPORTING_WM_CHECK", False),
+		      0, G_MAXLONG, False, XA_WINDOW, &type, &format,
+		      &nitems, &bytes_after, (guchar **) &xwindow);
+
+  if (type != XA_WINDOW)
+    {
+      wm_window = None;
+     return;
+    }
+
+  gdk_error_trap_push ();
+  XSelectInput (GDK_DISPLAY (), *xwindow, StructureNotifyMask | PropertyChangeMask);
+  XSync (GDK_DISPLAY (), False);
+
+  if (gdk_error_trap_pop ())
+    {
+       XFree (xwindow);
+       wm_window = None;
+       return;
+    }
+
+    wm_window = *xwindow;
+    XFree (xwindow);
+}
+
+static GdkFilterReturn
+wm_window_event_filter (GdkXEvent *xev,
+			GdkEvent  *event,
+			gpointer   data)
+{
+  WMCallbackData *ncb_data = (WMCallbackData*) data;
+  XEvent *xevent = (XEvent *)xev;
+
+  if ((xevent->type == DestroyNotify &&
+       wm_window != None && xevent->xany.window == wm_window) ||
+      (xevent->type == PropertyNotify &&
+       xevent->xany.window == GDK_ROOT_WINDOW () &&
+       xevent->xproperty.atom == (XInternAtom (GDK_DISPLAY (),  "_NET_SUPPORTING_WM_CHECK", False))) ||
+      (xevent->type == PropertyNotify &&
+       wm_window != None && xevent->xany.window == wm_window &&
+       xevent->xproperty.atom == (XInternAtom (GDK_DISPLAY (), "_NET_WM_NAME", False))))
+    {
+      update_wm_window ();
+      (* ncb_data->func) ((gpointer)wm_common_get_current_window_manager(),
+		   	  ncb_data->data);
+    }
+
+  return GDK_FILTER_CONTINUE;
+} 
+
+void
+wm_common_register_window_manager_change (GFunc    func,
+					  gpointer data)
+{
+  WMCallbackData *ncb_data;
+
+  ncb_data = g_new0 (WMCallbackData, 1);
+
+  ncb_data->func = func;
+  ncb_data->data = data;  
+
+  gdk_window_add_filter (NULL, wm_window_event_filter, ncb_data);
+
+  update_wm_window ();
+
+  XSelectInput (GDK_DISPLAY (), GDK_ROOT_WINDOW (), PropertyChangeMask);
+  XSync (GDK_DISPLAY (), False);
+}
+
+
diff --git a/capplets/common/wm-common.h b/capplets/common/wm-common.h
new file mode 100644
index 000000000..08c7145d0
--- /dev/null
+++ b/capplets/common/wm-common.h
@@ -0,0 +1,13 @@
+#ifndef WM_COMMON_H
+#define WM_COMMON_H
+
+#define WM_COMMON_METACITY "Metacity"
+#define WM_COMMON_SAWFISH  "Sawfish"
+#define WM_COMMON_UNKNOWN  "Unknown"
+
+gchar *wm_common_get_current_window_manager (void);
+void   wm_common_register_window_manager_change (GFunc    func,
+						 gpointer data);
+
+#endif /* WM_COMMON_H */
+
diff --git a/capplets/keybindings/ChangeLog b/capplets/keybindings/ChangeLog
index 05589b12a..f3d9b47b9 100644
--- a/capplets/keybindings/ChangeLog
+++ b/capplets/keybindings/ChangeLog
@@ -1,3 +1,9 @@
+2002-06-21  Stephen Browne <stephen.bronwe@sun.com>
+
+	* gnome-keybinding-properties.c : moved metacity detection
+	out of here and into a more generic API in capplets/common/wm-common.c
+
+
 2002-06-17  Jody Goldberg <jody@gnome.org>
 
 	* Release 2.0.0
diff --git a/capplets/keybindings/gnome-keybinding-properties.c b/capplets/keybindings/gnome-keybinding-properties.c
index 01ebebddd..085f1be23 100644
--- a/capplets/keybindings/gnome-keybinding-properties.c
+++ b/capplets/keybindings/gnome-keybinding-properties.c
@@ -12,6 +12,7 @@
 #include <X11/Xatom.h>
 
 #include "theme-common.h"
+#include "wm-common.h"
 #include "capplet-util.h"
 #include "eggcellrendererkeys.h"
 #include "activate-settings-daemon.h"
@@ -107,149 +108,7 @@ typedef struct
   guint gconf_cnxn;
 } KeyEntry;
 
-static void reload_key_entries (GladeXML *dialog);
-
-/* Our WM Window */
-static Window wm_window = None;
-
-static char *
-get_wm_name (void)
-{
-  Atom utf8_string, atom, type;
-  int result;
-  char *retval;
-  int format;
-  gulong nitems;
-  gulong bytes_after;
-  guchar *val;
-  
-  if (wm_window == None)
-      return NULL;
-  
-  utf8_string = XInternAtom (GDK_DISPLAY (), "UTF8_STRING", False);
-  atom = XInternAtom (GDK_DISPLAY (), "_NET_WM_NAME", False);
-  
-  gdk_error_trap_push ();
-  
-  result = XGetWindowProperty (GDK_DISPLAY (),
-			       wm_window,
-			       atom,
-			       0, G_MAXLONG,
-			       False, utf8_string,
-			       &type, &format, &nitems,
-			       &bytes_after, (guchar **)&val);
-
-  if (gdk_error_trap_pop () || result != Success)
-    return NULL;
-
-  if (type != utf8_string ||
-      format != 8 ||
-      nitems == 0)
-    {
-      if (val)
-	XFree (val);
-      return NULL;
-    }
-
-  if (!g_utf8_validate (val, nitems, NULL))
-    {
-      XFree (val);
-      return NULL;
-    }
-
-  retval = g_strndup (val, nitems);
-
-  XFree (val);
-
-  return retval;
-}
-
-static gboolean
-is_metacity_running (void)
-{
-  char *wm_name;
-
-  wm_name = get_wm_name ();
-  
-  if (wm_name &&
-      strcmp (wm_name, "Metacity") == 0)
-    {
-      g_free (wm_name);
-      return TRUE;
-    }
-
-  g_free (wm_name);
-  return FALSE;
-}
-
-static void
-update_wm_window (void)
-{
-  Window *xwindow;
-  Atom type;
-  gint format;
-  gulong nitems;
-  gulong bytes_after;
-  
-  XGetWindowProperty (GDK_DISPLAY (), GDK_ROOT_WINDOW (),
-		      XInternAtom (GDK_DISPLAY (), "_NET_SUPPORTING_WM_CHECK", False),
-		      0, G_MAXLONG, False, XA_WINDOW, &type, &format,
-		      &nitems, &bytes_after, (guchar **) &xwindow);
-
-  if (type != XA_WINDOW)
-    {
-      wm_window = None;
-      return;
-    }
-
-  gdk_error_trap_push ();
-  XSelectInput (GDK_DISPLAY (), *xwindow, StructureNotifyMask | PropertyChangeMask);
-  XSync (GDK_DISPLAY (), False);
-  
-  if (gdk_error_trap_pop ())
-    {
-      XFree (xwindow);
-      wm_window = None;
-      return;
-    }
-
-  wm_window = *xwindow;
-  XFree (xwindow);
-}
-
-static GdkFilterReturn 
-wm_window_event_filter (GdkXEvent *xev,
-			GdkEvent  *event,
-			gpointer   data)
-{
-  XEvent *xevent = (XEvent *)xev;
-
-  if ((xevent->type == DestroyNotify &&
-       wm_window != None && xevent->xany.window == wm_window) ||
-      (xevent->type == PropertyNotify &&
-       xevent->xany.window == GDK_ROOT_WINDOW () &&
-       xevent->xproperty.atom == (XInternAtom (GDK_DISPLAY (),  "_NET_SUPPORTING_WM_CHECK", False))) ||
-      (xevent->type == PropertyNotify &&
-       wm_window != None && xevent->xany.window == wm_window &&
-       xevent->xproperty.atom == (XInternAtom (GDK_DISPLAY (), "_NET_WM_NAME", False))))
-    {
-      update_wm_window ();
-      reload_key_entries (data);
-    }
-  
-  return GDK_FILTER_CONTINUE;
-}
-
-static void
-initialize_wm_handling (GladeXML *dialog)
-{
-  gdk_window_add_filter (NULL, wm_window_event_filter, dialog);
-
-  update_wm_window ();
-  
-  XSelectInput (GDK_DISPLAY (), GDK_ROOT_WINDOW (), PropertyChangeMask);
-  XSync (GDK_DISPLAY (), False);
-}
+static void reload_key_entries (gpointer wm_name, GladeXML *dialog);
 
 static void
 menu_item_activate (GtkWidget *menu_item,
@@ -591,13 +450,13 @@ append_keys_to_tree (GladeXML           *dialog,
 }
 
 static void
-reload_key_entries (GladeXML *dialog)
+reload_key_entries (gpointer wm_name, GladeXML *dialog)
 {
   clear_old_model (dialog, WID ("shortcut_treeview"));
   
   append_keys_to_tree (dialog, _("Desktop"), desktop_key_list);
   
-  if (is_metacity_running ())
+  if (strcmp((char *) wm_name, WM_COMMON_METACITY) == 0)
     {
       append_keys_to_tree (dialog, _("Window Management"), metacity_key_list);
     }
@@ -609,7 +468,7 @@ key_entry_controlling_key_changed (GConfClient *client,
 				   GConfEntry  *entry,
 				   gpointer     user_data)
 {
-  reload_key_entries (user_data);
+  reload_key_entries (wm_common_get_current_window_manager(), user_data);
 }
 
 static void
@@ -896,7 +755,7 @@ setup_dialog (GladeXML *dialog)
 			   dialog, NULL, NULL);
 
   /* set up the dialog */
-  reload_key_entries (dialog);
+  reload_key_entries (wm_common_get_current_window_manager(), dialog);
 
   widget = WID ("gnome-keybinding-dialog");
   filename = gnome_program_locate_file (NULL, GNOME_FILE_DOMAIN_APP_PIXMAP, "keyboard-shortcut.png", TRUE, NULL);
@@ -929,7 +788,7 @@ main (int argc, char *argv[])
   activate_settings_daemon ();
 
   dialog = create_dialog ();
-  initialize_wm_handling (dialog);
+  wm_common_register_window_manager_change ((GFunc)(reload_key_entries), dialog);
   setup_dialog (dialog);
   
   gtk_main ();