// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const { Atk, Clutter, Gio, GLib, GObject, Meta, Shell, St } = imports.gi;
const Mainloop = imports.mainloop;
const Main = imports.ui.main;
const SwitcherPopup = imports.ui.switcherPopup;
const Tweener = imports.ui.tweener;
var APP_ICON_HOVER_TIMEOUT = 200; // milliseconds
var THUMBNAIL_DEFAULT_SIZE = 256;
var THUMBNAIL_POPUP_TIME = 500; // milliseconds
var THUMBNAIL_FADE_TIME = 0.1; // seconds
var WINDOW_PREVIEW_SIZE = 128;
var APP_ICON_SIZE = 96;
var APP_ICON_SIZE_SMALL = 48;
const baseIconSizes = [96, 64, 48, 32, 22];
var AppIconMode = {
THUMBNAIL_ONLY: 1,
APP_ICON_ONLY: 2,
BOTH: 3,
};
function _createWindowClone(window, size) {
let [width, height] = window.get_size();
let scale = Math.min(1.0, size / width, size / height);
return new Clutter.Clone({ source: window,
width: width * scale,
height: height * scale,
x_align: Clutter.ActorAlign.CENTER,
y_align: Clutter.ActorAlign.CENTER,
// usual hack for the usual bug in ClutterBinLayout...
x_expand: true,
y_expand: true });
};
function getWindows(workspace) {
// We ignore skip-taskbar windows in switchers, but if they are attached
// to their parent, their position in the MRU list may be more appropriate
// than the parent; so start with the complete list ...
let windows = global.display.get_tab_list(Meta.TabList.NORMAL_ALL,
workspace);
// ... map windows to their parent where appropriate ...
return windows.map(w => {
return w.is_attached_dialog() ? w.get_transient_for() : w;
// ... and filter out skip-taskbar windows and duplicates
}).filter((w, i, a) => !w.skip_taskbar && a.indexOf(w) == i);
}
var AppSwitcherPopup = GObject.registerClass(
class AppSwitcherPopup extends SwitcherPopup.SwitcherPopup {
_init() {
super._init();
this._thumbnails = null;
this._thumbnailTimeoutId = 0;
this._currentWindow = -1;
this.thumbnailsVisible = false;
let apps = Shell.AppSystem.get_default().get_running ();
if (apps.length == 0)
return;
this._switcherList = new AppSwitcher(apps, this);
this._items = this._switcherList.icons;
}
vfunc_allocate(box, flags) {
super.vfunc_allocate(box, flags);
// Allocate the thumbnails
// We try to avoid overflowing the screen so we base the resulting size on
// those calculations
if (this._thumbnails) {
let childBox = this._switcherList.get_allocation_box();
let primary = Main.layoutManager.primaryMonitor;
let leftPadding = this.get_theme_node().get_padding(St.Side.LEFT);
let rightPadding = this.get_theme_node().get_padding(St.Side.RIGHT);
let bottomPadding = this.get_theme_node().get_padding(St.Side.BOTTOM);
let hPadding = leftPadding + rightPadding;
let icon = this._items[this._selectedIndex];
let [posX, posY] = icon.get_transformed_position();
let thumbnailCenter = posX + icon.width / 2;
let [childMinWidth, childNaturalWidth] = this._thumbnails.get_preferred_width(-1);
childBox.x1 = Math.max(primary.x + leftPadding, Math.floor(thumbnailCenter - childNaturalWidth / 2));
if (childBox.x1 + childNaturalWidth > primary.x + primary.width - hPadding) {
let offset = childBox.x1 + childNaturalWidth - primary.width + hPadding;
childBox.x1 = Math.max(primary.x + leftPadding, childBox.x1 - offset - hPadding);
}
let spacing = this.get_theme_node().get_length('spacing');
childBox.x2 = childBox.x1 + childNaturalWidth;
if (childBox.x2 > primary.x + primary.width - rightPadding)
childBox.x2 = primary.x + primary.width - rightPadding;
childBox.y1 = this._switcherList.allocation.y2 + spacing;
this._thumbnails.addClones(primary.y + primary.height - bottomPadding - childBox.y1);
let [childMinHeight, childNaturalHeight] = this._thumbnails.get_preferred_height(-1);
childBox.y2 = childBox.y1 + childNaturalHeight;
this._thumbnails.allocate(childBox, flags);
}
}
_initialSelection(backward, binding) {
if (binding == 'switch-group') {
if (backward) {
this._select(0, this._items[0].cachedWindows.length - 1);
} else {
if (this._items[0].cachedWindows.length > 1)
this._select(0, 1);
else
this._select(0, 0);
}
} else if (binding == 'switch-group-backward') {
this._select(0, this._items[0].cachedWindows.length - 1);
} else if (binding == 'switch-applications-backward') {
this._select(this._items.length - 1);
} else if (this._items.length == 1) {
this._select(0);
} else if (backward) {
this._select(this._items.length - 1);
} else {
this._select(1);
}
}
_nextWindow() {
// We actually want the second window if we're in the unset state
if (this._currentWindow == -1)
this._currentWindow = 0;
return SwitcherPopup.mod(this._currentWindow + 1,
this._items[this._selectedIndex].cachedWindows.length);
}
_previousWindow() {
// Also assume second window here
if (this._currentWindow == -1)
this._currentWindow = 1;
return SwitcherPopup.mod(this._currentWindow - 1,
this._items[this._selectedIndex].cachedWindows.length);
}
_closeAppWindow(appIndex, windowIndex) {
let appIcon = this._items[appIndex];
if (!appIcon)
return;
let window = appIcon.cachedWindows[windowIndex];
if (!window)
return;
window.delete(global.get_current_time());
}
_quitApplication(appIndex) {
let appIcon = this._items[appIndex];
if (!appIcon)
return;
appIcon.app.request_quit();
}
_keyPressHandler(keysym, action) {
if (action == Meta.KeyBindingAction.SWITCH_GROUP) {
if (!this._thumbnailsFocused)
this._select(this._selectedIndex, 0);
else
this._select(this._selectedIndex, this._nextWindow());
} else if (action == Meta.KeyBindingAction.SWITCH_GROUP_BACKWARD) {
this._select(this._selectedIndex, this._previousWindow());
} else if (action == Meta.KeyBindingAction.SWITCH_APPLICATIONS) {
this._select(this._next());
} else if (action == Meta.KeyBindingAction.SWITCH_APPLICATIONS_BACKWARD) {
this._select(this._previous());
} else if (keysym == Clutter.q) {
this._quitApplication(this._selectedIndex);
} else if (this._thumbnailsFocused) {
if (keysym == Clutter.Left)
this._select(this._selectedIndex, this._previousWindow());
else if (keysym == Clutter.Right)
this._select(this._selectedIndex, this._nextWindow());
else if (keysym == Clutter.Up)
this._select(this._selectedIndex, null, true);
else if (keysym == Clutter.w || keysym == Clutter.F4)
this._closeAppWindow(this._selectedIndex, this._currentWindow);
else
return Clutter.EVENT_PROPAGATE;
} else {
if (keysym == Clutter.Left)
this._select(this._previous());
else if (keysym == Clutter.Right)
this._select(this._next());
else if (keysym == Clutter.Down)
this._select(this._selectedIndex, 0);
else
return Clutter.EVENT_PROPAGATE;
}
return Clutter.EVENT_STOP;
}
_scrollHandler(direction) {
if (direction == Clutter.ScrollDirection.UP) {
if (this._thumbnailsFocused) {
if (this._currentWindow == 0 || this._currentWindow == -1)
this._select(this._previous());
else
this._select(this._selectedIndex, this._previousWindow());
} else {
let nwindows = this._items[this._selectedIndex].cachedWindows.length;
if (nwindows > 1)
this._select(this._selectedIndex, nwindows - 1);
else
this._select(this._previous());
}
} else if (direction == Clutter.ScrollDirection.DOWN) {
if (this._thumbnailsFocused) {
if (this._currentWindow == this._items[this._selectedIndex].cachedWindows.length - 1)
this._select(this._next());
else
this._select(this._selectedIndex, this._nextWindow());
} else {
let nwindows = this._items[this._selectedIndex].cachedWindows.length;
if (nwindows > 1)
this._select(this._selectedIndex, 0);
else
this._select(this._next());
}
}
}
_itemActivatedHandler(n) {
// If the user clicks on the selected app, activate the
// selected window; otherwise (eg, they click on an app while
// !mouseActive) activate the clicked-on app.
if (n == this._selectedIndex && this._currentWindow >= 0)
this._select(n, this._currentWindow);
else
this._select(n);
}
_itemEnteredHandler(n) {
this._select(n);
}
_windowActivated(thumbnailList, n) {
let appIcon = this._items[this._selectedIndex];
Main.activateWindow(appIcon.cachedWindows[n]);
this.fadeAndDestroy();
}
_windowEntered(thumbnailList, n) {
if (!this.mouseActive)
return;
this._select(this._selectedIndex, n);
}
_windowRemoved(thumbnailList, n) {
let appIcon = this._items[this._selectedIndex];
if (!appIcon)
return;
if (appIcon.cachedWindows.length > 0) {
let newIndex = Math.min(n, appIcon.cachedWindows.length - 1);
this._select(this._selectedIndex, newIndex);
}
}
_finish(timestamp) {
let appIcon = this._items[this._selectedIndex];
if (this._currentWindow < 0)
appIcon.app.activate_window(appIcon.cachedWindows[0], timestamp);
else if (appIcon.cachedWindows[this._currentWindow])
Main.activateWindow(appIcon.cachedWindows[this._currentWindow], timestamp);
super._finish(timestamp);
}
_onDestroy() {
super._onDestroy();
if (this._thumbnails)
this._destroyThumbnails();
if (this._thumbnailTimeoutId != 0)
Mainloop.source_remove(this._thumbnailTimeoutId);
}
/**
* _select:
* @app: index of the app to select
* @window: (optional) index of which of @app's windows to select
* @forceAppFocus: optional flag, see below
*
* Selects the indicated @app, and optional @window, and sets
* this._thumbnailsFocused appropriately to indicate whether the
* arrow keys should act on the app list or the thumbnail list.
*
* If @app is specified and @window is unspecified or %null, then
* the app is highlighted (ie, given a light background), and the
* current thumbnail list, if any, is destroyed. If @app has
* multiple windows, and @forceAppFocus is not %true, then a
* timeout is started to open a thumbnail list.
*
* If @app and @window are specified (and @forceAppFocus is not),
* then @app will be outlined, a thumbnail list will be created
* and focused (if it hasn't been already), and the @window'th
* window in it will be highlighted.
*
* If @app and @window are specified and @forceAppFocus is %true,
* then @app will be highlighted, and @window outlined, and the
* app list will have the keyboard focus.
*/
_select(app, window, forceAppFocus) {
if (app != this._selectedIndex || window == null) {
if (this._thumbnails)
this._destroyThumbnails();
}
if (this._thumbnailTimeoutId != 0) {
Mainloop.source_remove(this._thumbnailTimeoutId);
this._thumbnailTimeoutId = 0;
}
this._thumbnailsFocused = (window != null) && !forceAppFocus;
this._selectedIndex = app;
this._currentWindow = window ? window : -1;
this._switcherList.highlight(app, this._thumbnailsFocused);
if (window != null) {
if (!this._thumbnails)
this._createThumbnails();
this._currentWindow = window;
this._thumbnails.highlight(window, forceAppFocus);
} else if (this._items[this._selectedIndex].cachedWindows.length > 1 &&
!forceAppFocus) {
this._thumbnailTimeoutId = Mainloop.timeout_add (
THUMBNAIL_POPUP_TIME,
this._timeoutPopupThumbnails.bind(this));
GLib.Source.set_name_by_id(this._thumbnailTimeoutId, '[gnome-shell] this._timeoutPopupThumbnails');
}
}
_timeoutPopupThumbnails() {
if (!this._thumbnails)
this._createThumbnails();
this._thumbnailTimeoutId = 0;
this._thumbnailsFocused = false;
return GLib.SOURCE_REMOVE;
}
_destroyThumbnails() {
let thumbnailsActor = this._thumbnails;
Tweener.addTween(thumbnailsActor,
{ opacity: 0,
time: THUMBNAIL_FADE_TIME,
transition: 'easeOutQuad',
onComplete: () => {
thumbnailsActor.destroy();
this.thumbnailsVisible = false;
}
});
this._thumbnails = null;
if (this._switcherList._items[this._selectedIndex])
this._switcherList._items[this._selectedIndex].remove_accessible_state (Atk.StateType.EXPANDED);
}
_createThumbnails() {
this._thumbnails = new ThumbnailList (this._items[this._selectedIndex].cachedWindows);
this._thumbnails.connect('item-activated', this._windowActivated.bind(this));
this._thumbnails.connect('item-entered', this._windowEntered.bind(this));
this._thumbnails.connect('item-removed', this._windowRemoved.bind(this));
this._thumbnails.connect('destroy', () => {
this._thumbnails = null;
this._thumbnailsFocused = false;
});
this.add_actor(this._thumbnails);
// Need to force an allocation so we can figure out whether we
// need to scroll when selecting
this._thumbnails.get_allocation_box();
this._thumbnails.opacity = 0;
Tweener.addTween(this._thumbnails,
{ opacity: 255,
time: THUMBNAIL_FADE_TIME,
transition: 'easeOutQuad',
onComplete: () => { this.thumbnailsVisible = true; }
});
this._switcherList._items[this._selectedIndex].add_accessible_state (Atk.StateType.EXPANDED);
}
});
class CyclerHighlight {
constructor() {
this._window = null;
this.actor = new St.Widget({ layout_manager: new Clutter.BinLayout() });
this._clone = new Clutter.Clone();
this.actor.add_actor(this._clone);
this._highlight = new St.Widget({ style_class: 'cycler-highlight' });
this.actor.add_actor(this._highlight);
let coordinate = Clutter.BindCoordinate.ALL;
let constraint = new Clutter.BindConstraint({ coordinate: coordinate });
this._clone.bind_property('source', constraint, 'source', 0);
this.actor.add_constraint(constraint);
this.actor.connect('notify::allocation',
this._onAllocationChanged.bind(this));
this.actor.connect('destroy', this._onDestroy.bind(this));
}
set window(w) {
if (this._window == w)
return;
this._window = w;
if (this._clone.source)
this._clone.source.sync_visibility();
let windowActor = this._window ? this._window.get_compositor_private()
: null;
if (windowActor)
windowActor.hide();
this._clone.source = windowActor;
}
_onAllocationChanged() {
if (!this._window) {
this._highlight.set_size(0, 0);
this._highlight.hide();
} else {
let [x, y] = this.actor.allocation.get_origin();
let rect = this._window.get_frame_rect();
this._highlight.set_size(rect.width, rect.height);
this._highlight.set_position(rect.x - x, rect.y - y);
this._highlight.show();
}
}
_onDestroy() {
this.window = null;
}
};
// We don't show an actual popup, so just provide what SwitcherPopup
// expects instead of inheriting from SwitcherList
var CyclerList = GObject.registerClass({
Signals: { 'item-activated': { param_types: [GObject.TYPE_INT] },
'item-entered': { param_types: [GObject.TYPE_INT] },
'item-removed': { param_types: [GObject.TYPE_INT] },
'item-highlighted': { param_types: [GObject.TYPE_INT] } },
}, class CyclerList extends St.Widget {
highlight(index, justOutline) {
this.emit('item-highlighted', index);
}
});
var CyclerPopup = GObject.registerClass(
class CyclerPopup extends SwitcherPopup.SwitcherPopup {
_init() {
if (new.target === CyclerPopup)
throw new TypeError('Cannot instantiate abstract class ' + new.target.name);
super._init();
this._items = this._getWindows();
if (this._items.length == 0)
return;
this._highlight = new CyclerHighlight();
global.window_group.add_actor(this._highlight.actor);
this._switcherList = new CyclerList();
this._switcherList.connect('item-highlighted', (list, index) => {
this._highlightItem(index);
});
}
_highlightItem(index, justOutline) {
this._highlight.window = this._items[index];
global.window_group.set_child_above_sibling(this._highlight.actor, null);
}
_finish() {
let window = this._items[this._selectedIndex];
let ws = window.get_workspace();
let workspaceManager = global.workspace_manager;
let activeWs = workspaceManager.get_active_workspace();
if (window.minimized) {
Main.wm.skipNextEffect(window.get_compositor_private());
window.unminimize();
}
if (activeWs == ws) {
Main.activateWindow(window);
} else {
// If the selected window is on a different workspace, we don't
// want it to disappear, then slide in with the workspace; instead,
// always activate it on the active workspace ...
activeWs.activate_with_focus(window, global.get_current_time());
// ... then slide it over to the original workspace if necessary
Main.wm.actionMoveWindow(window, ws);
}
super._finish();
}
_onDestroy() {
this._highlight.actor.destroy();
super._onDestroy();
}
});
var GroupCyclerPopup = GObject.registerClass(
class GroupCyclerPopup extends CyclerPopup {
_getWindows() {
let app = Shell.WindowTracker.get_default().focus_app;
return app ? app.get_windows() : [];
}
_keyPressHandler(keysym, action) {
if (action == Meta.KeyBindingAction.CYCLE_GROUP)
this._select(this._next());
else if (action == Meta.KeyBindingAction.CYCLE_GROUP_BACKWARD)
this._select(this._previous());
else
return Clutter.EVENT_PROPAGATE;
return Clutter.EVENT_STOP;
}
});
var WindowSwitcherPopup = GObject.registerClass(
class WindowSwitcherPopup extends SwitcherPopup.SwitcherPopup {
_init() {
super._init();
this._settings = new Gio.Settings({ schema_id: 'org.gnome.shell.window-switcher' });
let windows = this._getWindowList();
if (windows.length == 0)
return;
let mode = this._settings.get_enum('app-icon-mode');
this._switcherList = new WindowList(windows, mode);
this._items = this._switcherList.icons;
}
_getWindowList() {
let workspace = null;
if (this._settings.get_boolean('current-workspace-only')) {
let workspaceManager = global.workspace_manager;
workspace = workspaceManager.get_active_workspace();
}
return getWindows(workspace);
}
_closeWindow(windowIndex) {
let windowIcon = this._items[windowIndex];
if (!windowIcon)
return;
windowIcon.window.delete(global.get_current_time());
}
_keyPressHandler(keysym, action) {
if (action == Meta.KeyBindingAction.SWITCH_WINDOWS) {
this._select(this._next());
} else if (action == Meta.KeyBindingAction.SWITCH_WINDOWS_BACKWARD) {
this._select(this._previous());
} else {
if (keysym == Clutter.Left)
this._select(this._previous());
else if (keysym == Clutter.Right)
this._select(this._next());
else if (keysym == Clutter.w || keysym == Clutter.F4)
this._closeWindow(this._selectedIndex);
else
return Clutter.EVENT_PROPAGATE;
}
return Clutter.EVENT_STOP;
}
_finish() {
Main.activateWindow(this._items[this._selectedIndex].window);
super._finish();
}
});
var WindowCyclerPopup = GObject.registerClass(
class WindowCyclerPopup extends CyclerPopup {
_init() {
this._settings = new Gio.Settings({ schema_id: 'org.gnome.shell.window-switcher' });
super._init();
}
_getWindows() {
let workspace = null;
if (this._settings.get_boolean('current-workspace-only')) {
let workspaceManager = global.workspace_manager;
workspace = workspaceManager.get_active_workspace();
}
return getWindows(workspace);
}
_keyPressHandler(keysym, action) {
if (action == Meta.KeyBindingAction.CYCLE_WINDOWS)
this._select(this._next());
else if (action == Meta.KeyBindingAction.CYCLE_WINDOWS_BACKWARD)
this._select(this._previous());
else
return Clutter.EVENT_PROPAGATE;
return Clutter.EVENT_STOP;
}
});
var AppIcon = GObject.registerClass(
class AppIcon extends St.BoxLayout {
_init(app) {
super._init({ style_class: 'alt-tab-app',
vertical: true });
this.app = app;
this.icon = null;
this._iconBin = new St.Bin({ x_fill: true, y_fill: true });
this.add(this._iconBin, { x_fill: false, y_fill: false } );
this.label = new St.Label({ text: this.app.get_name() });
this.add(this.label, { x_fill: false });
}
set_size(size) {
this.icon = this.app.create_icon_texture(size);
this._iconBin.child = this.icon;
this._iconBin.set_size(size, size);
}
vfunc_get_preferred_width(forHeight) {
let [minWidth, ] = super.vfunc_get_preferred_width(forHeight);
minWidth = Math.max(minWidth, forHeight);
return [minWidth, minWidth];
}
});
var AppSwitcher = GObject.registerClass(
class AppSwitcher extends SwitcherPopup.SwitcherList {
_init(apps, altTabPopup) {
super._init(true);
this.icons = [];
this._arrows = [];
let windowTracker = Shell.WindowTracker.get_default();
let settings = new Gio.Settings({ schema_id: 'org.gnome.shell.app-switcher' });
let workspace = null;
if (settings.get_boolean('current-workspace-only')) {
let workspaceManager = global.workspace_manager;
workspace = workspaceManager.get_active_workspace();
}
let allWindows = global.display.get_tab_list(Meta.TabList.NORMAL, workspace);
// Construct the AppIcons, add to the popup
for (let i = 0; i < apps.length; i++) {
let appIcon = new AppIcon(apps[i]);
// Cache the window list now; we don't handle dynamic changes here,
// and we don't want to be continually retrieving it
appIcon.cachedWindows = allWindows.filter(
w => windowTracker.get_window_app (w) == appIcon.app
);
if (appIcon.cachedWindows.length > 0)
this._addIcon(appIcon);
}
this._curApp = -1;
this._altTabPopup = altTabPopup;
this._mouseTimeOutId = 0;
this.connect('destroy', this._onDestroy.bind(this));
}
_onDestroy() {
if (this._mouseTimeOutId != 0)
Mainloop.source_remove(this._mouseTimeOutId);
this.icons.forEach(icon => {
icon.app.disconnect(icon._stateChangedId);
});
}
_setIconSize() {
let j = 0;
while(this._items.length > 1 && this._items[j].style_class != 'item-box') {
j++;
}
let themeNode = this._items[j].get_theme_node();
let iconPadding = themeNode.get_horizontal_padding();
let iconBorder = themeNode.get_border_width(St.Side.LEFT) + themeNode.get_border_width(St.Side.RIGHT);
let [iconMinHeight, iconNaturalHeight] = this.icons[j].label.get_preferred_height(-1);
let iconSpacing = iconNaturalHeight + iconPadding + iconBorder;
let totalSpacing = this._list.spacing * (this._items.length - 1);
// We just assume the whole screen here due to weirdness happing with the passed width
let primary = Main.layoutManager.primaryMonitor;
let parentPadding = this.get_parent().get_theme_node().get_horizontal_padding();
let availWidth = primary.width - parentPadding - this.get_theme_node().get_horizontal_padding();
let scaleFactor = St.ThemeContext.get_for_stage(global.stage).scale_factor;
let iconSizes = baseIconSizes.map(s => s * scaleFactor);
let iconSize = baseIconSizes[0];
if (this._items.length > 1) {
for(let i = 0; i < baseIconSizes.length; i++) {
iconSize = baseIconSizes[i];
let height = iconSizes[i] + iconSpacing;
let w = height * this._items.length + totalSpacing;
if (w <= availWidth)
break;
}
}
this._iconSize = iconSize;
for(let i = 0; i < this.icons.length; i++) {
if (this.icons[i].icon != null)
break;
this.icons[i].set_size(iconSize);
}
}
vfunc_get_preferred_height(forWidth) {
this._setIconSize();
return super.vfunc_get_preferred_height(forWidth);
}
vfunc_allocate(box, flags) {
// Allocate the main list items
super.vfunc_allocate(box, flags);
let contentBox = this.get_theme_node().get_content_box(box);
let arrowHeight = Math.floor(this.get_theme_node().get_padding(St.Side.BOTTOM) / 3);
let arrowWidth = arrowHeight * 2;
// Now allocate each arrow underneath its item
let childBox = new Clutter.ActorBox();
for (let i = 0; i < this._items.length; i++) {
let itemBox = this._items[i].allocation;
childBox.x1 = contentBox.x1 + Math.floor(itemBox.x1 + (itemBox.x2 - itemBox.x1 - arrowWidth) / 2);
childBox.x2 = childBox.x1 + arrowWidth;
childBox.y1 = contentBox.y1 + itemBox.y2 + arrowHeight;
childBox.y2 = childBox.y1 + arrowHeight;
this._arrows[i].allocate(childBox, flags);
}
}
// We override SwitcherList's _onItemEnter method to delay
// activation when the thumbnail list is open
_onItemEnter(index) {
if (this._mouseTimeOutId != 0)
Mainloop.source_remove(this._mouseTimeOutId);
if (this._altTabPopup.thumbnailsVisible) {
this._mouseTimeOutId = Mainloop.timeout_add(APP_ICON_HOVER_TIMEOUT,
() => {
this._enterItem(index);
this._mouseTimeOutId = 0;
return GLib.SOURCE_REMOVE;
});
GLib.Source.set_name_by_id(this._mouseTimeOutId, '[gnome-shell] this._enterItem');
} else
this._itemEntered(index);
}
_enterItem(index) {
let [x, y, mask] = global.get_pointer();
let pickedActor = global.stage.get_actor_at_pos(Clutter.PickMode.ALL, x, y);
if (this._items[index].contains(pickedActor))
this._itemEntered(index);
}
// We override SwitcherList's highlight() method to also deal with
// the AppSwitcher->ThumbnailList arrows. Apps with only 1 window
// will hide their arrows by default, but show them when their
// thumbnails are visible (ie, when the app icon is supposed to be
// in justOutline mode). Apps with multiple windows will normally
// show a dim arrow, but show a bright arrow when they are
// highlighted.
highlight(n, justOutline) {
if (this.icons[this._curApp]) {
if (this.icons[this._curApp].cachedWindows.length == 1)
this._arrows[this._curApp].hide();
else
this._arrows[this._curApp].remove_style_pseudo_class('highlighted');
}
super.highlight(n, justOutline);
this._curApp = n;
if (this._curApp != -1) {
if (justOutline && this.icons[this._curApp].cachedWindows.length == 1)
this._arrows[this._curApp].show();
else
this._arrows[this._curApp].add_style_pseudo_class('highlighted');
}
}
_addIcon(appIcon) {
this.icons.push(appIcon);
let item = this.addItem(appIcon, appIcon.label);
appIcon._stateChangedId = appIcon.app.connect('notify::state', app => {
if (app.state != Shell.AppState.RUNNING)
this._removeIcon(app);
});
let n = this._arrows.length;
let arrow = new St.DrawingArea({ style_class: 'switcher-arrow' });
arrow.connect('repaint', () => { SwitcherPopup.drawArrow(arrow, St.Side.BOTTOM); });
this.add_actor(arrow);
this._arrows.push(arrow);
if (appIcon.cachedWindows.length == 1)
arrow.hide();
else
item.add_accessible_state (Atk.StateType.EXPANDABLE);
}
_removeIcon(app) {
let index = this.icons.findIndex(icon => {
return icon.app == app;
});
if (index === -1)
return;
this.icons.splice(index, 1);
this.removeItem(index);
}
});
var ThumbnailList = GObject.registerClass(
class ThumbnailList extends SwitcherPopup.SwitcherList {
_init(windows) {
super._init(false);
this._labels = new Array();
this._thumbnailBins = new Array();
this._clones = new Array();
this._windows = windows;
for (let i = 0; i < windows.length; i++) {
let box = new St.BoxLayout({ style_class: 'thumbnail-box',
vertical: true });
let bin = new St.Bin({ style_class: 'thumbnail' });
box.add_actor(bin);
this._thumbnailBins.push(bin);
let title = windows[i].get_title();
if (title) {
let name = new St.Label({ text: title });
// St.Label doesn't support text-align so use a Bin
let bin = new St.Bin({ x_align: St.Align.MIDDLE });
this._labels.push(bin);
bin.add_actor(name);
box.add_actor(bin);
this.addItem(box, name);
} else {
this.addItem(box, null);
}
}
this.connect('destroy', this._onDestroy.bind(this));
}
addClones(availHeight) {
if (!this._thumbnailBins.length)
return;
let totalPadding = this._items[0].get_theme_node().get_horizontal_padding() + this._items[0].get_theme_node().get_vertical_padding();
totalPadding += this.get_theme_node().get_horizontal_padding() + this.get_theme_node().get_vertical_padding();
let [labelMinHeight, labelNaturalHeight] = this._labels[0].get_preferred_height(-1);
let spacing = this._items[0].child.get_theme_node().get_length('spacing');
let scaleFactor = St.ThemeContext.get_for_stage(global.stage).scale_factor;
let thumbnailSize = THUMBNAIL_DEFAULT_SIZE * scaleFactor;
availHeight = Math.min(availHeight - labelNaturalHeight - totalPadding - spacing, thumbnailSize);
let binHeight = availHeight + this._items[0].get_theme_node().get_vertical_padding() + this.get_theme_node().get_vertical_padding() - spacing;
binHeight = Math.min(thumbnailSize, binHeight);
for (let i = 0; i < this._thumbnailBins.length; i++) {
let mutterWindow = this._windows[i].get_compositor_private();
if (!mutterWindow)
continue;
let clone = _createWindowClone(mutterWindow, thumbnailSize);
this._thumbnailBins[i].set_height(binHeight);
this._thumbnailBins[i].add_actor(clone);
clone._destroyId = mutterWindow.connect('destroy', source => {
this._removeThumbnail(source, clone);
});
this._clones.push(clone);
}
// Make sure we only do this once
this._thumbnailBins = new Array();
}
_removeThumbnail(source, clone) {
let index = this._clones.indexOf(clone);
if (index === -1)
return;
this._clones.splice(index, 1);
this._windows.splice(index, 1);
this._labels.splice(index, 1);
this.removeItem(index);
if (this._clones.length > 0)
this.highlight(SwitcherPopup.mod(index, this._clones.length));
else
this.destroy();
}
_onDestroy() {
this._clones.forEach(clone => {
if (clone.source)
clone.source.disconnect(clone._destroyId);
});
}
});
var WindowIcon = GObject.registerClass(
class WindowIcon extends St.BoxLayout {
_init(window, mode) {
super._init({ style_class: 'alt-tab-app',
vertical: true });
this.window = window;
this._icon = new St.Widget({ layout_manager: new Clutter.BinLayout() });
this.add(this._icon, { x_fill: false, y_fill: false } );
this.label = new St.Label({ text: window.get_title() });
let tracker = Shell.WindowTracker.get_default();
this.app = tracker.get_window_app(window);
let mutterWindow = this.window.get_compositor_private();
let size;
this._icon.destroy_all_children();
let scaleFactor = St.ThemeContext.get_for_stage(global.stage).scale_factor;
switch (mode) {
case AppIconMode.THUMBNAIL_ONLY:
size = WINDOW_PREVIEW_SIZE;
this._icon.add_actor(_createWindowClone(mutterWindow, size * scaleFactor));
break;
case AppIconMode.BOTH:
size = WINDOW_PREVIEW_SIZE;
this._icon.add_actor(_createWindowClone(mutterWindow, size * scaleFactor));
if (this.app)
this._icon.add_actor(this._createAppIcon(this.app,
APP_ICON_SIZE_SMALL));
break;
case AppIconMode.APP_ICON_ONLY:
size = APP_ICON_SIZE;
this._icon.add_actor(this._createAppIcon(this.app, size));
}
this._icon.set_size(size * scaleFactor, size * scaleFactor);
}
_createAppIcon(app, size) {
let appIcon = app ? app.create_icon_texture(size)
: new St.Icon({ icon_name: 'icon-missing',
icon_size: size });
appIcon.x_expand = appIcon.y_expand = true;
appIcon.x_align = appIcon.y_align = Clutter.ActorAlign.END;
return appIcon;
}
});
var WindowList = GObject.registerClass(
class WindowList extends SwitcherPopup.SwitcherList {
_init(windows, mode) {
super._init(true);
this._label = new St.Label({ x_align: Clutter.ActorAlign.CENTER,
y_align: Clutter.ActorAlign.CENTER });
this.add_actor(this._label);
this.windows = windows;
this.icons = [];
for (let i = 0; i < windows.length; i++) {
let win = windows[i];
let icon = new WindowIcon(win, mode);
this.addItem(icon, icon.label);
this.icons.push(icon);
icon._unmanagedSignalId = icon.window.connect('unmanaged', (window) => {
this._removeWindow(window)
});
}
this.connect('destroy', this._onDestroy.bind(this));
}
_onDestroy() {
this.icons.forEach(icon => {
icon.window.disconnect(icon._unmanagedSignalId);
});
}
vfunc_get_preferred_height(forWidth) {
let [minHeight, natHeight] = super.vfunc_get_preferred_height(forWidth);
let spacing = this.get_theme_node().get_padding(St.Side.BOTTOM);
let [labelMin, labelNat] = this._label.get_preferred_height(-1);
minHeight += labelMin + spacing;
natHeight += labelNat + spacing;
return [minHeight, natHeight];
}
vfunc_allocate(box, flags) {
let themeNode = this.get_theme_node();
let contentBox = themeNode.get_content_box(box);
let childBox = new Clutter.ActorBox();
childBox.x1 = contentBox.x1;
childBox.x2 = contentBox.x2;
childBox.y2 = contentBox.y2;
childBox.y1 = childBox.y2 - this._label.height;
this._label.allocate(childBox, flags);
let totalLabelHeight = this._label.height + themeNode.get_padding(St.Side.BOTTOM)
childBox.x1 = box.x1;
childBox.x2 = box.x2;
childBox.y1 = box.y1;
childBox.y2 = box.y2 - totalLabelHeight;
super.vfunc_allocate(childBox, flags);
// Hooking up the parent vfunc will call this.set_allocation() with
// the height without the label height, so call it again with the
// correct size here.
this.set_allocation(box, flags);
}
highlight(index, justOutline) {
super.highlight(index, justOutline);
this._label.set_text(index == -1 ? '' : this.icons[index].label.text);
}
_removeWindow(window) {
let index = this.icons.findIndex(icon => {
return icon.window == window;
});
if (index === -1)
return;
this.icons.splice(index, 1);
this.removeItem(index);
}
});