gnome-shell/js/ui/ctrlAltTab.js

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// -*- 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);
}
});