Add activity actions to dock menu

Expose activity placement controls for running tasks in
convergence mode. The dock menu can now move a window to the
current activity, all activities, or a specific activity.

containments/homescreens/folio/qml/FavouritesBar.qml

@@ -177,6 +177,33 @@ MouseArea {
         return result
     }
 
+    function taskActivities(taskModel) {
+        let activities = taskModel.Activities
+        return activities ? activities : []
+    }
+
+    function activityName(activityId) {
+        let name = activityInfo.activityName(activityId)
+        return name && name.length > 0 ? name : i18n("Activity")
+    }
+
+    function menuActivityIds(taskActivities) {
+        let runningActivities = activityInfo.runningActivities()
+        if (!runningActivities || runningActivities.length <= 1) {
+            return []
+        }
+
+        let result = []
+        for (let i = 0; i < runningActivities.length; ++i) {
+            let activityId = runningActivities[i]
+            if (taskActivities.length === 1 && String(taskActivities[0]) === String(activityId)) {
+                continue
+            }
+            result.push(activityId)
+        }
+        return result
+    }
+
     // Returns the desktop ID of the pager button under screen-space x, or ""
     function pagerButtonDesktopAt(x) {
         if (!showPager) return ""
@@ -1623,6 +1650,7 @@ MouseArea {
             readonly property bool dynamicTilingActive: root.convergenceMode && ShellSettings.Settings.dynamicTilingEnabled
             readonly property bool showFreeGeometryActions: !taskDelegate.isGroupParent && !taskDelegate.dynamicTilingActive
             readonly property bool canChangeVirtualDesktops: taskDelegate.model.IsVirtualDesktopsChangeable === true
+            readonly property bool canChangeActivities: activityInfo.numberOfRunningActivities > 1 && !taskDelegate.isGroupParent
 
             Accessible.role: Accessible.Button
             Accessible.name: taskDelegate.model.display || ""
@@ -1942,6 +1970,33 @@ MouseArea {
                     height: visible ? implicitHeight : 0
                     onClicked: tasksModel.requestNewVirtualDesktop(tasksModel.makeModelIndex(taskDelegate.index))
                 }
+
+                Controls.MenuSeparator {
+                    visible: taskDelegate.canChangeActivities
+                    height: visible ? implicitHeight : 0
+                }
+
+                PC3.MenuItem {
+                    icon.name: "activities"
+                    text: root.taskActivities(taskDelegate.model).length === 0 ? i18n("Show Only on Current Activity") : i18n("Show on All Activities")
+                    visible: taskDelegate.canChangeActivities
+                    height: visible ? implicitHeight : 0
+                    onClicked: tasksModel.requestActivities(tasksModel.makeModelIndex(taskDelegate.index),
+                        root.taskActivities(taskDelegate.model).length === 0 ? [activityInfo.currentActivity] : [])
+                }
+
+                Instantiator {
+                    model: taskDelegate.canChangeActivities ? root.menuActivityIds(root.taskActivities(taskDelegate.model)) : []
+                    delegate: PC3.MenuItem {
+                        required property var modelData
+                        icon.name: activityInfo.activityIcon(modelData)
+                        text: i18n("Move to %1", root.activityName(modelData))
+                        onTriggered: tasksModel.requestActivities(
+                            tasksModel.makeModelIndex(taskDelegate.index), [modelData])
+                    }
+                    onObjectAdded: (idx, obj) => taskContextMenu.insertItem(taskContextMenu.count, obj)
+                    onObjectRemoved: (idx, obj) => taskContextMenu.removeItem(obj)
+                }
             }
         }
     }