[taskmanager] Add filter for task role IsHidden, port requestToggleMinimized to use it

Needed to make panel Adaptive Transparency work with "Show window thumbnails: always"
Needed to make Minimize All work with "Show window thumbnails: always"

libtaskmanager/taskfilterproxymodel.cpp

@@ -41,6 +41,7 @@ public:
     bool filterByActivity = false;
     bool filterNotMinimized = false;
     bool filterNotMaximized = false;
+    bool filterHidden = false;
     bool filterSkipTaskbar = true;
     bool filterSkipPager = false;
 
@@ -202,6 +203,22 @@ void TaskFilterProxyModel::setFilterNotMaximized(bool filter)
     }
 }
 
+bool TaskFilterProxyModel::filterHidden() const
+{
+    return d->filterHidden;
+}
+
+void TaskFilterProxyModel::setFilterHidden(bool filter)
+{
+    if (d->filterHidden != filter) {
+        d->filterHidden = filter;
+
+        invalidateFilter();
+
+        emit filterHiddenChanged();
+    }
+}
+
 bool TaskFilterProxyModel::filterSkipTaskbar() const
 {
     return d->filterSkipTaskbar;
@@ -327,6 +344,15 @@ bool TaskFilterProxyModel::acceptsRow(int sourceRow) const
         }
     }
 
+    // Filter hidden.
+    if (d->filterHidden) {
+        bool isHidden = sourceIdx.data(AbstractTasksModel::IsHidden).toBool();
+
+        if (isHidden) {
+            return false;
+        }
+    }
+
     return true;
 }
 

libtaskmanager/taskfilterproxymodel.h

@@ -53,6 +53,7 @@ class TASKMANAGER_EXPORT TaskFilterProxyModel : public QSortFilterProxyModel, pu
     Q_PROPERTY(bool filterByActivity READ filterByActivity WRITE setFilterByActivity NOTIFY filterByActivityChanged)
     Q_PROPERTY(bool filterNotMinimized READ filterNotMinimized WRITE setFilterNotMinimized NOTIFY filterNotMinimizedChanged)
     Q_PROPERTY(bool filterNotMaximized READ filterNotMaximized WRITE setFilterNotMaximized NOTIFY filterNotMaximizedChanged)
+    Q_PROPERTY(bool filterHidden READ filterHidden WRITE setFilterHidden NOTIFY filterHiddenChanged)
     Q_PROPERTY(bool filterSkipTaskbar READ filterSkipTaskbar WRITE setFilterSkipTaskbar NOTIFY filterSkipTaskbarChanged)
     Q_PROPERTY(bool filterSkipPager READ filterSkipPager WRITE setFilterSkipPager NOTIFY filterSkipPagerChanged)
 
@@ -230,6 +231,23 @@ public:
      **/
     void setFilterNotMaximized(bool filter);
 
+    /**
+     * Whether hidden tasks should be filtered. Defaults to
+     * @c false.
+     *
+     * @see setFilterHidden
+     * @returns @c true if hidden tasks should be filtered.
+     **/
+    bool filterHidden() const;
+
+    /**
+     * Set whether hidden tasks should be filtered.
+     *
+     * @see filterHidden
+     * @param filter Whether hidden tasks should be filtered.
+     **/
+    void setFilterHidden(bool filter);
+
     /**
      * Whether tasks which should be omitted from 'task bars' should be
      * filtered. Defaults to @c true.
@@ -304,6 +322,7 @@ Q_SIGNALS:
     void filterByActivityChanged() const;
     void filterNotMinimizedChanged() const;
     void filterNotMaximizedChanged() const;
+    void filterHiddenChanged() const;
     void filterSkipTaskbarChanged() const;
     void filterSkipPagerChanged() const;
     void demandingAttentionSkipsFiltersChanged() const;

libtaskmanager/taskgroupingproxymodel.cpp

@@ -979,12 +979,12 @@ void TaskGroupingProxyModel::requestToggleMinimized(const QModelIndex &index)
     if (index.parent().isValid() || !d->isGroup(index.row())) {
         d->abstractTasksSourceModel->requestToggleMinimized(mapToSource(index));
     } else {
-        const bool goalState = !index.data(AbstractTasksModel::IsMinimized).toBool();
+        const bool goalState = !index.data(AbstractTasksModel::IsHidden).toBool();
 
         for (int i = 0; i < rowCount(index); ++i) {
             const QModelIndex &child = this->index(i, 0, index);
 
-            if (child.data(AbstractTasksModel::IsMinimized).toBool() != goalState) {
+            if (child.data(AbstractTasksModel::IsHidden).toBool() != goalState) {
                 d->abstractTasksSourceModel->requestToggleMinimized(mapToSource(child));
             }
         }

libtaskmanager/tasksmodel.cpp

@@ -303,6 +303,7 @@ void TasksModel::Private::initModels()
     QObject::connect(filterProxyModel, &TaskFilterProxyModel::filterByActivityChanged, q, &TasksModel::filterByActivityChanged);
     QObject::connect(filterProxyModel, &TaskFilterProxyModel::filterNotMinimizedChanged, q, &TasksModel::filterNotMinimizedChanged);
     QObject::connect(filterProxyModel, &TaskFilterProxyModel::filterNotMaximizedChanged, q, &TasksModel::filterNotMaximizedChanged);
+    QObject::connect(filterProxyModel, &TaskFilterProxyModel::filterHiddenChanged, q, &TasksModel::filterHiddenChanged);
 
     groupingProxyModel = new TaskGroupingProxyModel(q);
     groupingProxyModel->setSourceModel(filterProxyModel);
@@ -1163,6 +1164,16 @@ void TasksModel::setFilterNotMaximized(bool filter)
     d->filterProxyModel->setFilterNotMaximized(filter);
 }
 
+bool TasksModel::filterHidden() const
+{
+    return d->filterProxyModel->filterHidden();
+}
+
+void TasksModel::setFilterHidden(bool filter)
+{
+    d->filterProxyModel->setFilterHidden(filter);
+}
+
 TasksModel::SortMode TasksModel::sortMode() const
 {
     return d->sortMode;

libtaskmanager/tasksmodel.h

@@ -74,6 +74,7 @@ class TASKMANAGER_EXPORT TasksModel : public QSortFilterProxyModel, public Abstr
     Q_PROPERTY(bool filterByActivity READ filterByActivity WRITE setFilterByActivity NOTIFY filterByActivityChanged)
     Q_PROPERTY(bool filterNotMinimized READ filterNotMinimized WRITE setFilterNotMinimized NOTIFY filterNotMinimizedChanged)
     Q_PROPERTY(bool filterNotMaximized READ filterNotMaximized WRITE setFilterNotMaximized NOTIFY filterNotMaximizedChanged)
+    Q_PROPERTY(bool filterHidden READ filterHidden WRITE setFilterHidden NOTIFY filterHiddenChanged)
 
     Q_PROPERTY(SortMode sortMode READ sortMode WRITE setSortMode NOTIFY sortModeChanged)
     Q_PROPERTY(bool separateLaunchers READ separateLaunchers WRITE setSeparateLaunchers NOTIFY separateLaunchersChanged)
@@ -313,6 +314,23 @@ public:
      **/
     void setFilterNotMaximized(bool filter);
 
+    /**
+     * Whether hidden tasks should be filtered. Defaults to
+     * @c false.
+     *
+     * @see setFilterHidden
+     * @returns @c true if hidden tasks should be filtered.
+     **/
+    bool filterHidden() const;
+
+    /**
+     * Set whether hidden tasks should be filtered.
+     *
+     * @see filterHidden
+     * @param filter Whether hidden tasks should be filtered.
+     **/
+    void setFilterHidden(bool filter);
+
     /**
      * The sort mode used in sorting tasks. Defaults to SortAlpha.
      *
@@ -867,6 +885,7 @@ Q_SIGNALS:
     void filterByActivityChanged() const;
     void filterNotMinimizedChanged() const;
     void filterNotMaximizedChanged() const;
+    void filterHiddenChanged() const;
     void sortModeChanged() const;
     void separateLaunchersChanged() const;
     void launchInPlaceChanged() const;

libtaskmanager/xwindowtasksmodel.cpp

@@ -832,7 +832,7 @@ void XWindowTasksModel::requestToggleMinimized(const QModelIndex &index)
     const WId window = d->windows.at(index.row());
     const KWindowInfo *info = d->windowInfo(window);
 
-    if (info->isMinimized()) {
+    if (index.data(AbstractTasksModel::IsHidden).toBool()) {
         bool onCurrent = info->isOnCurrentDesktop();
 
         // FIXME: Move logic up into proxy? (See also others.)