Adding upstream version 3.38.6.upstream/3.38.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 192 insertions, 0 deletions

diff --git a/js/ui/ctrlAltTab.js b/js/ui/ctrlAltTab.js
new file mode 100644
index 0000000..fbc7a0f
--- /dev/null
+++ b/js/ui/ctrlAltTab.js
@@ -0,0 +1,192 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported CtrlAltTabManager */
+
+const { Clutter, GObject, Meta, Shell, St } = imports.gi;
+
+const Main = imports.ui.main;
+const SwitcherPopup = imports.ui.switcherPopup;
+const Params = imports.misc.params;
+
+var POPUP_APPICON_SIZE = 96;
+
+var SortGroup = {
+    TOP:    0,
+    MIDDLE: 1,
+    BOTTOM: 2,
+};
+
+var CtrlAltTabManager = class CtrlAltTabManager {
+    constructor() {
+        this._items = [];
+        this.addGroup(global.window_group, _("Windows"),
+                      'focus-windows-symbolic', { sortGroup: SortGroup.TOP,
+                                                  focusCallback: this._focusWindows.bind(this) });
+    }
+
+    addGroup(root, name, icon, params) {
+        let item = Params.parse(params, { sortGroup: SortGroup.MIDDLE,
+                                          proxy: root,
+                                          focusCallback: null });
+
+        item.root = root;
+        item.name = name;
+        item.iconName = icon;
+
+        this._items.push(item);
+        root.connect('destroy', () => this.removeGroup(root));
+        if (root instanceof St.Widget)
+            global.focus_manager.add_group(root);
+    }
+
+    removeGroup(root) {
+        if (root instanceof St.Widget)
+            global.focus_manager.remove_group(root);
+        for (let i = 0; i < this._items.length; i++) {
+            if (this._items[i].root == root) {
+                this._items.splice(i, 1);
+                return;
+            }
+        }
+    }
+
+    focusGroup(item, timestamp) {
+        if (item.focusCallback)
+            item.focusCallback(timestamp);
+        else
+            item.root.navigate_focus(null, St.DirectionType.TAB_FORWARD, false);
+    }
+
+    // Sort the items into a consistent order; panel first, tray last,
+    // and everything else in between, sorted by X coordinate, so that
+    // they will have the same left-to-right ordering in the
+    // Ctrl-Alt-Tab dialog as they do onscreen.
+    _sortItems(a, b) {
+        if (a.sortGroup != b.sortGroup)
+            return a.sortGroup - b.sortGroup;
+
+        let [ax] = a.proxy.get_transformed_position();
+        let [bx] = b.proxy.get_transformed_position();
+
+        return ax - bx;
+    }
+
+    popup(backward, binding, mask) {
+        // Start with the set of focus groups that are currently mapped
+        let items = this._items.filter(item => item.proxy.mapped);
+
+        // And add the windows metacity would show in its Ctrl-Alt-Tab list
+        if (Main.sessionMode.hasWindows && !Main.overview.visible) {
+            let display = global.display;
+            let workspaceManager = global.workspace_manager;
+            let activeWorkspace = workspaceManager.get_active_workspace();
+            let windows = display.get_tab_list(Meta.TabList.DOCKS,
+                                               activeWorkspace);
+            let windowTracker = Shell.WindowTracker.get_default();
+            let textureCache = St.TextureCache.get_default();
+            for (let i = 0; i < windows.length; i++) {
+                let icon = null;
+                let iconName = null;
+                if (windows[i].get_window_type() == Meta.WindowType.DESKTOP) {
+                    iconName = 'video-display-symbolic';
+                } else {
+                    let app = windowTracker.get_window_app(windows[i]);
+                    if (app) {
+                        icon = app.create_icon_texture(POPUP_APPICON_SIZE);
+                    } else {
+                        icon = new St.Icon({
+                            gicon: textureCache.bind_cairo_surface_property(windows[i], 'icon'),
+                            icon_size: POPUP_APPICON_SIZE,
+                        });
+                    }
+                }
+
+                items.push({ name: windows[i].title,
+                             proxy: windows[i].get_compositor_private(),
+                             focusCallback: timestamp => {
+                                 Main.activateWindow(windows[i], timestamp);
+                             },
+                             iconActor: icon,
+                             iconName,
+                             sortGroup: SortGroup.MIDDLE });
+            }
+        }
+
+        if (!items.length)
+            return;
+
+        items.sort(this._sortItems.bind(this));
+
+        if (!this._popup) {
+            this._popup = new CtrlAltTabPopup(items);
+            this._popup.show(backward, binding, mask);
+
+            this._popup.connect('destroy',
+                                () => {
+                                    this._popup = null;
+                                });
+        }
+    }
+
+    _focusWindows(timestamp) {
+        global.display.focus_default_window(timestamp);
+    }
+};
+
+var CtrlAltTabPopup = GObject.registerClass(
+class CtrlAltTabPopup extends SwitcherPopup.SwitcherPopup {
+    _init(items) {
+        super._init(items);
+
+        this._switcherList = new CtrlAltTabSwitcher(this._items);
+    }
+
+    _keyPressHandler(keysym, action) {
+        if (action == Meta.KeyBindingAction.SWITCH_PANELS)
+            this._select(this._next());
+        else if (action == Meta.KeyBindingAction.SWITCH_PANELS_BACKWARD)
+            this._select(this._previous());
+        else if (keysym == Clutter.KEY_Left)
+            this._select(this._previous());
+        else if (keysym == Clutter.KEY_Right)
+            this._select(this._next());
+        else
+            return Clutter.EVENT_PROPAGATE;
+
+        return Clutter.EVENT_STOP;
+    }
+
+    _finish(time) {
+        super._finish(time);
+        Main.ctrlAltTabManager.focusGroup(this._items[this._selectedIndex], time);
+    }
+});
+
+var CtrlAltTabSwitcher = GObject.registerClass(
+class CtrlAltTabSwitcher extends SwitcherPopup.SwitcherList {
+    _init(items) {
+        super._init(true);
+
+        for (let i = 0; i < items.length; i++)
+            this._addIcon(items[i]);
+    }
+
+    _addIcon(item) {
+        let box = new St.BoxLayout({ style_class: 'alt-tab-app',
+                                     vertical: true });
+
+        let icon = item.iconActor;
+        if (!icon) {
+            icon = new St.Icon({ icon_name: item.iconName,
+                                 icon_size: POPUP_APPICON_SIZE });
+        }
+        box.add_child(icon);
+
+        let text = new St.Label({
+            text: item.name,
+            x_align: Clutter.ActorAlign.CENTER,
+        });
+        box.add_child(text);
+
+        this.addItem(box, text);
+    }
+});