[gnome-shell] workspace: Remove skip-taskbar windows while the overview is shown



commit cc2af75fb42d1b920d77a2bd577afffe2e015ad0
Author: Daniel van Vugt <daniel van vugt canonical com>
Date:   Fri Jul 23 17:33:43 2021 +0800

    workspace: Remove skip-taskbar windows while the overview is shown
    
    On startup desktop-icons-ng Wayland windows have skip-taskbar==FALSE so
    initially pass `_isOverviewWindow` and they get added to the overview,
    which is confusing to users. However almost immediately after that they
    get `meta_wayland_client_hide_from_window_list` and are removed from
    future overviews. So now we respond to `notify::skip-taskbar` immediately
    and prevent desktop-icons-ng appearing in the startup overview too.
    
    This is messy and ideally we'd like to know the window type immediately
    on creation, but that option only exists in X11 and not Wayland.
    
    https://gitlab.com/rastersoft/desktop-icons-ng/-/issues/137
    https://bugs.launchpad.net/bugs/1936643
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1925>

 js/ui/workspace.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
---
diff --git a/js/ui/workspace.js b/js/ui/workspace.js
index 7e6018fbd3..7bc3cdfb67 100644
--- a/js/ui/workspace.js
+++ b/js/ui/workspace.js
@@ -1106,6 +1106,7 @@ class Workspace extends St.Widget {
         this.connect('style-changed', this._onStyleChanged.bind(this));
         this.connect('destroy', this._onDestroy.bind(this));
 
+        this._skipTaskbarSignals = new Map();
         const windows = global.get_window_actors().map(a => a.meta_window)
             .filter(this._isMyWindow, this);
 
@@ -1232,6 +1233,14 @@ class Workspace extends St.Widget {
         if (!this._isMyWindow(metaWin))
             return;
 
+        this._skipTaskbarSignals.set(metaWin,
+            metaWin.connect('notify::skip-taskbar', () => {
+                if (metaWin.skip_taskbar)
+                    this._doRemoveWindow(metaWin);
+                else
+                    this._doAddWindow(metaWin);
+            }));
+
         if (!this._isOverviewWindow(metaWin)) {
             if (metaWin.get_transient_for() == null)
                 return;
@@ -1300,7 +1309,15 @@ class Workspace extends St.Widget {
         return false;
     }
 
+    _clearSkipTaskbarSignals() {
+        for (const [metaWin, id] of this._skipTaskbarSignals)
+            metaWin.disconnect(id);
+        this._skipTaskbarSignals.clear();
+    }
+
     prepareToLeaveOverview() {
+        this._clearSkipTaskbarSignals();
+
         for (let i = 0; i < this._windows.length; i++)
             this._windows[i].remove_all_transitions();
 
@@ -1314,6 +1331,8 @@ class Workspace extends St.Widget {
     }
 
     _onDestroy() {
+        this._clearSkipTaskbarSignals();
+
         if (this._overviewHiddenId) {
             Main.overview.disconnect(this._overviewHiddenId);
             this._overviewHiddenId = 0;


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