🔧 Use 'unmanged' signal to adjust window clone transitions

extension.js

@@ -91,6 +91,7 @@ class Extension {
     if (WindowPreview) {
       this._origDeleteAll = WindowPreview.prototype._deleteAll;
       this._origRestack   = WindowPreview.prototype._restack;
+      this._origInit      = WindowPreview.prototype._init;
 
       // This is required, else WindowPreview's _restack() which is called by the
       // "this.overlayEnabled = false", sometimes tries to access an already delete
@@ -102,24 +103,23 @@ class Extension {
         }
       };
 
-      // The _deleteAll is called when the user clicks the X in the overview.
+      // When a window is removed from the overview, we need adjust the transitions of the
-      WindowPreview.prototype._deleteAll = function() {
+      // window clone according to the chosen effect. We do this in the 'unmanaged' signal
-        // Do not attempt to close windows twice. Due to the animation in the overview,
+      // of the WindowPreview's Meta.Window. This is not ideal, as it does not work for
-        // the close button can be clicked twice which normally would lead to a crash.
+      // dialogs which close themselves... Maybe there's a better way?
-        if (!this._closeRequested) {
+      WindowPreview.prototype._init = function(...params) {
-
         // Call the original method.
-          extensionThis._origDeleteAll.apply(this);
+        extensionThis._origInit.apply(this, params);
-
-          // Hide the window's icon, name, and close button.
-          this.overlayEnabled = false;
-          this._icon.visible  = false;
 
         // When the user clicks the X in the overview, the window is not deleted
         // immediately. However, as soon as the window is really deleted, we need to
         // adjust the transition of its clone.
         const connectionID = this.metaWindow.connect('unmanaged', () => {
           if (this.window_container) {
+            // Hide the window's icon, name, and close button.
+            this.overlayEnabled = false;
+            this._icon.visible  = false;
+
             const transitionConfig = extensionThis._effect.getCloseTransition(
                 this.window_container, extensionThis._settings);
             extensionThis._tweakTransitions(this.window_container, transitionConfig);
@@ -131,6 +131,14 @@ class Extension {
         this.connect('destroy', () => {
           this.metaWindow.disconnect(connectionID);
         });
+      };
+
+      // The _deleteAll is called when the user clicks the X in the overview. We should
+      // not attempt to close windows twice. Due to the animation in the overview, the
+      // close button can be clicked twice which normally would lead to a crash.
+      WindowPreview.prototype._deleteAll = function() {
+        if (!this._closeRequested) {
+          extensionThis._origDeleteAll.apply(this);
         }
       };
     }
@@ -276,6 +284,7 @@ class Extension {
     if (WindowPreview) {
       WindowPreview.prototype._deleteAll = this._origDeleteAll;
       WindowPreview.prototype._restack   = this._origRestack;
+      WindowPreview.prototype._init      = this._origInit;
     }
 
     this._settings = null;