background: Rename Background 'changed' signal to 'bg-changed'

Meta.Background has already a 'changed' signal and not to confuse the source
signal with the wrapper one, rename the wrapper class signal into 'bg-changed'.

This will be relevant when we'll inherit from Meta.Background, as signal
emissions from the base class could interfere with the wanted derived class
behavior and with the the grouping of successive changes into a single ::change
emission.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/559

diff --git a/js/ui/background.js b/js/ui/background.js
index 8432abc75e9fdc214131d1fa6204154ef4a3d03a..b7307e5a4556bf53c62b0ae0a0c3d3f59e1edc86 100644 (file)
--- a/js/ui/background.js
+++ b/js/ui/background.js
@@ -300,9 +300,11 @@ var Background = class Background {
 
         this._changedIdleId = GLib.idle_add(GLib.PRIORITY_DEFAULT, () => {
             this._changedIdleId = 0;
-            this.emit('changed');
+            this.emit('bg-changed');
             return GLib.SOURCE_REMOVE;
         });
+        GLib.Source.set_name_by_id(this._changedIdleId,
+            '[gnome-shell] Background._emitChangedSignal');
     }
 
     updateResolution() {
@@ -566,7 +568,7 @@ var BackgroundSource = class BackgroundSource {
 
         // We don't watch changes to settings here,
         // instead we rely on Background to watch those
-        // and emit 'changed' at the right time
+        // and emit 'bg-changed' at the right time
 
         if (this._overrideImage != null) {
             file = Gio.File.new_for_path(this._overrideImage);
@@ -595,7 +597,7 @@ var BackgroundSource = class BackgroundSource {
                 style: style
             });
 
-            background._changedId = background.connect('changed', () => {
+            background._changedId = background.connect('bg-changed', () => {
                 background.disconnect(background._changedId);
                 background.destroy();
                 delete this._backgrounds[monitorIndex];
@@ -766,7 +768,7 @@ var BackgroundManager = class BackgroundManager {
             backgroundActor.lower_bottom();
         }
 
-        let changeSignalId = background.connect('changed', () => {
+        let changeSignalId = background.connect('bg-changed', () => {
             background.disconnect(changeSignalId);
             changeSignalId = null;
             this._updateBackgroundActor();