033277b68f
Just as we did with classes, define other constants that are (or may be) used from other modules with 'var' to cut down on warnings. https://bugzilla.gnome.org/show_bug.cgi?id=785084
620 lines
22 KiB
JavaScript
620 lines
22 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Clutter = imports.gi.Clutter;
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const GLib = imports.gi.GLib;
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const Gtk = imports.gi.Gtk;
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const Lang = imports.lang;
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const Mainloop = imports.mainloop;
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const Meta = imports.gi.Meta;
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const Shell = imports.gi.Shell;
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const Signals = imports.signals;
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const St = imports.gi.St;
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const Main = imports.ui.main;
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const Tweener = imports.ui.tweener;
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var POPUP_DELAY_TIMEOUT = 150; // milliseconds
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var POPUP_SCROLL_TIME = 0.10; // seconds
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var POPUP_FADE_OUT_TIME = 0.1; // seconds
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var DISABLE_HOVER_TIMEOUT = 500; // milliseconds
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function mod(a, b) {
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return (a + b) % b;
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}
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function primaryModifier(mask) {
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if (mask == 0)
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return 0;
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let primary = 1;
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while (mask > 1) {
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mask >>= 1;
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primary <<= 1;
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}
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return primary;
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}
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var SwitcherPopup = new Lang.Class({
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Name: 'SwitcherPopup',
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Abstract: true,
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_init: function(items) {
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this._switcherList = null;
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this._items = items || [];
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this._selectedIndex = 0;
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this.actor = new Shell.GenericContainer({ style_class: 'switcher-popup',
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reactive: true,
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visible: false });
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this.actor.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
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this.actor.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
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this.actor.connect('allocate', Lang.bind(this, this._allocate));
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this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
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Main.uiGroup.add_actor(this.actor);
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this._haveModal = false;
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this._modifierMask = 0;
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this._motionTimeoutId = 0;
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this._initialDelayTimeoutId = 0;
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// Initially disable hover so we ignore the enter-event if
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// the switcher appears underneath the current pointer location
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this._disableHover();
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},
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_getPreferredWidth: function(actor, forHeight, alloc) {
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let primary = Main.layoutManager.primaryMonitor;
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alloc.min_size = primary.width;
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alloc.natural_size = primary.width;
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},
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_getPreferredHeight: function(actor, forWidth, alloc) {
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let primary = Main.layoutManager.primaryMonitor;
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alloc.min_size = primary.height;
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alloc.natural_size = primary.height;
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},
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_allocate: function(actor, box, flags) {
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let childBox = new Clutter.ActorBox();
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let primary = Main.layoutManager.primaryMonitor;
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let leftPadding = this.actor.get_theme_node().get_padding(St.Side.LEFT);
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let rightPadding = this.actor.get_theme_node().get_padding(St.Side.RIGHT);
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let hPadding = leftPadding + rightPadding;
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// Allocate the switcherList
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// We select a size based on an icon size that does not overflow the screen
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let [childMinHeight, childNaturalHeight] = this._switcherList.actor.get_preferred_height(primary.width - hPadding);
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let [childMinWidth, childNaturalWidth] = this._switcherList.actor.get_preferred_width(childNaturalHeight);
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childBox.x1 = Math.max(primary.x + leftPadding, primary.x + Math.floor((primary.width - childNaturalWidth) / 2));
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childBox.x2 = Math.min(primary.x + primary.width - rightPadding, childBox.x1 + childNaturalWidth);
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childBox.y1 = primary.y + Math.floor((primary.height - childNaturalHeight) / 2);
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childBox.y2 = childBox.y1 + childNaturalHeight;
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this._switcherList.actor.allocate(childBox, flags);
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},
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_initialSelection: function(backward, binding) {
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if (backward)
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this._select(this._items.length - 1);
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else if (this._items.length == 1)
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this._select(0);
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else
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this._select(1);
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},
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show: function(backward, binding, mask) {
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if (this._items.length == 0)
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return false;
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if (!Main.pushModal(this.actor)) {
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// Probably someone else has a pointer grab, try again with keyboard only
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if (!Main.pushModal(this.actor, { options: Meta.ModalOptions.POINTER_ALREADY_GRABBED })) {
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return false;
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}
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}
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this._haveModal = true;
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this._modifierMask = primaryModifier(mask);
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this.actor.connect('key-press-event', Lang.bind(this, this._keyPressEvent));
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this.actor.connect('key-release-event', Lang.bind(this, this._keyReleaseEvent));
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this.actor.connect('button-press-event', Lang.bind(this, this._clickedOutside));
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this.actor.connect('scroll-event', Lang.bind(this, this._scrollEvent));
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this.actor.add_actor(this._switcherList.actor);
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this._switcherList.connect('item-activated', Lang.bind(this, this._itemActivated));
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this._switcherList.connect('item-entered', Lang.bind(this, this._itemEntered));
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// Need to force an allocation so we can figure out whether we
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// need to scroll when selecting
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this.actor.opacity = 0;
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this.actor.show();
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this.actor.get_allocation_box();
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this._initialSelection(backward, binding);
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// There's a race condition; if the user released Alt before
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// we got the grab, then we won't be notified. (See
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// https://bugzilla.gnome.org/show_bug.cgi?id=596695 for
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// details.) So we check now. (Have to do this after updating
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// selection.)
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let [x, y, mods] = global.get_pointer();
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if (!(mods & this._modifierMask)) {
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this._finish(global.get_current_time());
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return false;
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}
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// We delay showing the popup so that fast Alt+Tab users aren't
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// disturbed by the popup briefly flashing.
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this._initialDelayTimeoutId = Mainloop.timeout_add(POPUP_DELAY_TIMEOUT,
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Lang.bind(this, function () {
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Main.osdWindowManager.hideAll();
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this.actor.opacity = 255;
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this._initialDelayTimeoutId = 0;
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return GLib.SOURCE_REMOVE;
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}));
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GLib.Source.set_name_by_id(this._initialDelayTimeoutId, '[gnome-shell] Main.osdWindow.cancel');
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return true;
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},
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_next: function() {
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return mod(this._selectedIndex + 1, this._items.length);
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},
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_previous: function() {
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return mod(this._selectedIndex - 1, this._items.length);
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},
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_keyPressHandler: function(keysym, action) {
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throw new Error('Not implemented');
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},
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_keyPressEvent: function(actor, event) {
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let keysym = event.get_key_symbol();
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let action = global.display.get_keybinding_action(event.get_key_code(), event.get_state());
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this._disableHover();
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if (this._keyPressHandler(keysym, action) != Clutter.EVENT_PROPAGATE)
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return Clutter.EVENT_STOP;
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if (keysym == Clutter.Escape)
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this.destroy();
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return Clutter.EVENT_STOP;
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},
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_keyReleaseEvent: function(actor, event) {
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let [x, y, mods] = global.get_pointer();
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let state = mods & this._modifierMask;
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if (state == 0)
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this._finish(event.get_time());
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return Clutter.EVENT_STOP;
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},
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_clickedOutside: function(actor, event) {
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this.destroy();
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return Clutter.EVENT_PROPAGATE;
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},
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_scrollHandler: function(direction) {
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if (direction == Clutter.ScrollDirection.UP)
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this._select(this._previous());
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else if (direction == Clutter.ScrollDirection.DOWN)
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this._select(this._next());
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},
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_scrollEvent: function(actor, event) {
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this._scrollHandler(event.get_scroll_direction());
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return Clutter.EVENT_PROPAGATE;
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},
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_itemActivatedHandler: function(n) {
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this._select(n);
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},
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_itemActivated: function(switcher, n) {
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this._itemActivatedHandler(n);
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this._finish(global.get_current_time());
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},
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_itemEnteredHandler: function(n) {
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this._select(n);
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},
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_itemEntered: function(switcher, n) {
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if (!this.mouseActive)
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return;
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this._itemEnteredHandler(n);
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},
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_disableHover: function() {
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this.mouseActive = false;
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if (this._motionTimeoutId != 0)
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Mainloop.source_remove(this._motionTimeoutId);
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this._motionTimeoutId = Mainloop.timeout_add(DISABLE_HOVER_TIMEOUT, Lang.bind(this, this._mouseTimedOut));
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GLib.Source.set_name_by_id(this._motionTimeoutId, '[gnome-shell] this._mouseTimedOut');
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},
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_mouseTimedOut: function() {
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this._motionTimeoutId = 0;
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this.mouseActive = true;
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return GLib.SOURCE_REMOVE;
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},
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_popModal: function() {
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if (this._haveModal) {
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Main.popModal(this.actor);
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this._haveModal = false;
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}
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},
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destroy: function() {
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this._popModal();
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if (this.actor.visible) {
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Tweener.addTween(this.actor,
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{ opacity: 0,
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time: POPUP_FADE_OUT_TIME,
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transition: 'easeOutQuad',
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onComplete: Lang.bind(this,
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function() {
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this.actor.destroy();
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})
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});
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} else
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this.actor.destroy();
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},
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_finish: function(timestamp) {
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this.destroy();
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},
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_onDestroy: function() {
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this._popModal();
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if (this._motionTimeoutId != 0)
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Mainloop.source_remove(this._motionTimeoutId);
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if (this._initialDelayTimeoutId != 0)
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Mainloop.source_remove(this._initialDelayTimeoutId);
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},
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_select: function(num) {
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this._selectedIndex = num;
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this._switcherList.highlight(num);
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}
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});
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var SwitcherList = new Lang.Class({
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Name: 'SwitcherList',
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_init : function(squareItems) {
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this.actor = new Shell.GenericContainer({ style_class: 'switcher-list' });
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this.actor.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
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this.actor.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
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this.actor.connect('allocate', Lang.bind(this, this._allocateTop));
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// Here we use a GenericContainer so that we can force all the
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// children to have the same width.
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this._list = new Shell.GenericContainer({ style_class: 'switcher-list-item-container' });
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this._list.spacing = 0;
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this._list.connect('style-changed', Lang.bind(this, function() {
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this._list.spacing = this._list.get_theme_node().get_length('spacing');
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}));
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this._list.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
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this._list.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
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this._list.connect('allocate', Lang.bind(this, this._allocate));
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this._scrollView = new St.ScrollView({ style_class: 'hfade',
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enable_mouse_scrolling: false });
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this._scrollView.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.NEVER);
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let scrollBox = new St.BoxLayout();
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scrollBox.add_actor(this._list);
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this._scrollView.add_actor(scrollBox);
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this.actor.add_actor(this._scrollView);
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// Those arrows indicate whether scrolling in one direction is possible
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this._leftArrow = new St.DrawingArea({ style_class: 'switcher-arrow',
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pseudo_class: 'highlighted' });
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this._leftArrow.connect('repaint', Lang.bind(this,
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function() { drawArrow(this._leftArrow, St.Side.LEFT); }));
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this._rightArrow = new St.DrawingArea({ style_class: 'switcher-arrow',
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pseudo_class: 'highlighted' });
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this._rightArrow.connect('repaint', Lang.bind(this,
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function() { drawArrow(this._rightArrow, St.Side.RIGHT); }));
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this.actor.add_actor(this._leftArrow);
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this.actor.add_actor(this._rightArrow);
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this._items = [];
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this._highlighted = -1;
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this._squareItems = squareItems;
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this._minSize = 0;
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this._scrollableRight = true;
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this._scrollableLeft = false;
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},
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_allocateTop: function(actor, box, flags) {
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let leftPadding = this.actor.get_theme_node().get_padding(St.Side.LEFT);
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let rightPadding = this.actor.get_theme_node().get_padding(St.Side.RIGHT);
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let childBox = new Clutter.ActorBox();
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let scrollable = this._minSize > box.x2 - box.x1;
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box.y1 -= this.actor.get_theme_node().get_padding(St.Side.TOP);
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box.y2 += this.actor.get_theme_node().get_padding(St.Side.BOTTOM);
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this._scrollView.allocate(box, flags);
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let arrowWidth = Math.floor(leftPadding / 3);
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let arrowHeight = arrowWidth * 2;
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childBox.x1 = leftPadding / 2;
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childBox.y1 = this.actor.height / 2 - arrowWidth;
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childBox.x2 = childBox.x1 + arrowWidth;
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childBox.y2 = childBox.y1 + arrowHeight;
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this._leftArrow.allocate(childBox, flags);
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this._leftArrow.opacity = (this._scrollableLeft && scrollable) ? 255 : 0;
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arrowWidth = Math.floor(rightPadding / 3);
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arrowHeight = arrowWidth * 2;
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childBox.x1 = this.actor.width - arrowWidth - rightPadding / 2;
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childBox.y1 = this.actor.height / 2 - arrowWidth;
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childBox.x2 = childBox.x1 + arrowWidth;
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childBox.y2 = childBox.y1 + arrowHeight;
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this._rightArrow.allocate(childBox, flags);
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this._rightArrow.opacity = (this._scrollableRight && scrollable) ? 255 : 0;
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},
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addItem : function(item, label) {
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let bbox = new St.Button({ style_class: 'item-box',
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reactive: true });
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bbox.set_child(item);
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this._list.add_actor(bbox);
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let n = this._items.length;
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bbox.connect('clicked', Lang.bind(this, function() { this._onItemClicked(n); }));
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bbox.connect('motion-event', Lang.bind(this, function() { return this._onItemEnter(n); }));
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bbox.label_actor = label;
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this._items.push(bbox);
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return bbox;
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},
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_onItemClicked: function (index) {
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this._itemActivated(index);
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},
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_onItemEnter: function (index) {
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// Avoid reentrancy
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if (index != this._currentItemEntered) {
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this._currentItemEntered = index;
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this._itemEntered(index);
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}
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return Clutter.EVENT_PROPAGATE;
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},
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highlight: function(index, justOutline) {
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if (this._highlighted != -1) {
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this._items[this._highlighted].remove_style_pseudo_class('outlined');
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this._items[this._highlighted].remove_style_pseudo_class('selected');
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}
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this._highlighted = index;
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if (this._highlighted != -1) {
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if (justOutline)
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this._items[this._highlighted].add_style_pseudo_class('outlined');
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else
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this._items[this._highlighted].add_style_pseudo_class('selected');
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}
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let adjustment = this._scrollView.hscroll.adjustment;
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let [value, lower, upper, stepIncrement, pageIncrement, pageSize] = adjustment.get_values();
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let [absItemX, absItemY] = this._items[index].get_transformed_position();
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let [result, posX, posY] = this.actor.transform_stage_point(absItemX, 0);
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let [containerWidth, containerHeight] = this.actor.get_transformed_size();
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if (posX + this._items[index].get_width() > containerWidth)
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this._scrollToRight();
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else if (this._items[index].allocation.x1 - value < 0)
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this._scrollToLeft();
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},
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_scrollToLeft : function() {
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let adjustment = this._scrollView.hscroll.adjustment;
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let [value, lower, upper, stepIncrement, pageIncrement, pageSize] = adjustment.get_values();
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let item = this._items[this._highlighted];
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if (item.allocation.x1 < value)
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value = Math.min(0, item.allocation.x1);
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else if (item.allocation.x2 > value + pageSize)
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value = Math.max(upper, item.allocation.x2 - pageSize);
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this._scrollableRight = true;
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Tweener.addTween(adjustment,
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{ value: value,
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time: POPUP_SCROLL_TIME,
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transition: 'easeOutQuad',
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onComplete: Lang.bind(this, function () {
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if (this._highlighted == 0)
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this._scrollableLeft = false;
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this.actor.queue_relayout();
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})
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});
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},
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_scrollToRight : function() {
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let adjustment = this._scrollView.hscroll.adjustment;
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let [value, lower, upper, stepIncrement, pageIncrement, pageSize] = adjustment.get_values();
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let item = this._items[this._highlighted];
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if (item.allocation.x1 < value)
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value = Math.max(0, item.allocation.x1);
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else if (item.allocation.x2 > value + pageSize)
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value = Math.min(upper, item.allocation.x2 - pageSize);
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this._scrollableLeft = true;
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Tweener.addTween(adjustment,
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{ value: value,
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time: POPUP_SCROLL_TIME,
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transition: 'easeOutQuad',
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onComplete: Lang.bind(this, function () {
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if (this._highlighted == this._items.length - 1)
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this._scrollableRight = false;
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this.actor.queue_relayout();
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})
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});
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},
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_itemActivated: function(n) {
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this.emit('item-activated', n);
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},
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_itemEntered: function(n) {
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this.emit('item-entered', n);
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},
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_maxChildWidth: function (forHeight) {
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let maxChildMin = 0;
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let maxChildNat = 0;
|
|
|
|
for (let i = 0; i < this._items.length; i++) {
|
|
let [childMin, childNat] = this._items[i].get_preferred_width(forHeight);
|
|
maxChildMin = Math.max(childMin, maxChildMin);
|
|
maxChildNat = Math.max(childNat, maxChildNat);
|
|
|
|
if (this._squareItems) {
|
|
let [childMin, childNat] = this._items[i].get_preferred_height(-1);
|
|
maxChildMin = Math.max(childMin, maxChildMin);
|
|
maxChildNat = Math.max(childNat, maxChildNat);
|
|
}
|
|
}
|
|
|
|
return [maxChildMin, maxChildNat];
|
|
},
|
|
|
|
_getPreferredWidth: function (actor, forHeight, alloc) {
|
|
let [maxChildMin, maxChildNat] = this._maxChildWidth(forHeight);
|
|
|
|
let totalSpacing = Math.max(this._list.spacing * (this._items.length - 1), 0);
|
|
alloc.min_size = this._items.length * maxChildMin + totalSpacing;
|
|
alloc.natural_size = alloc.min_size;
|
|
this._minSize = alloc.min_size;
|
|
},
|
|
|
|
_getPreferredHeight: function (actor, forWidth, alloc) {
|
|
let maxChildMin = 0;
|
|
let maxChildNat = 0;
|
|
|
|
for (let i = 0; i < this._items.length; i++) {
|
|
let [childMin, childNat] = this._items[i].get_preferred_height(-1);
|
|
maxChildMin = Math.max(childMin, maxChildMin);
|
|
maxChildNat = Math.max(childNat, maxChildNat);
|
|
}
|
|
|
|
if (this._squareItems) {
|
|
let [childMin, childNat] = this._maxChildWidth(-1);
|
|
maxChildMin = Math.max(childMin, maxChildMin);
|
|
maxChildNat = maxChildMin;
|
|
}
|
|
|
|
alloc.min_size = maxChildMin;
|
|
alloc.natural_size = maxChildNat;
|
|
},
|
|
|
|
_allocate: function (actor, box, flags) {
|
|
let childHeight = box.y2 - box.y1;
|
|
|
|
let [maxChildMin, maxChildNat] = this._maxChildWidth(childHeight);
|
|
let totalSpacing = Math.max(this._list.spacing * (this._items.length - 1), 0);
|
|
|
|
let childWidth = Math.floor(Math.max(0, box.x2 - box.x1 - totalSpacing) / this._items.length);
|
|
|
|
let x = 0;
|
|
let children = this._list.get_children();
|
|
let childBox = new Clutter.ActorBox();
|
|
|
|
let primary = Main.layoutManager.primaryMonitor;
|
|
let parentRightPadding = this.actor.get_parent().get_theme_node().get_padding(St.Side.RIGHT);
|
|
|
|
for (let i = 0; i < children.length; i++) {
|
|
if (this._items.indexOf(children[i]) != -1) {
|
|
let [childMin, childNat] = children[i].get_preferred_height(childWidth);
|
|
let vSpacing = (childHeight - childNat) / 2;
|
|
childBox.x1 = x;
|
|
childBox.y1 = vSpacing;
|
|
childBox.x2 = x + childWidth;
|
|
childBox.y2 = childBox.y1 + childNat;
|
|
children[i].allocate(childBox, flags);
|
|
|
|
x += this._list.spacing + childWidth;
|
|
} else {
|
|
// Something else, eg, AppSwitcher's arrows;
|
|
// we don't allocate it.
|
|
}
|
|
}
|
|
}
|
|
});
|
|
Signals.addSignalMethods(SwitcherList.prototype);
|
|
|
|
function drawArrow(area, side) {
|
|
let themeNode = area.get_theme_node();
|
|
let borderColor = themeNode.get_border_color(side);
|
|
let bodyColor = themeNode.get_foreground_color();
|
|
|
|
let [width, height] = area.get_surface_size ();
|
|
let cr = area.get_context();
|
|
|
|
cr.setLineWidth(1.0);
|
|
Clutter.cairo_set_source_color(cr, borderColor);
|
|
|
|
switch (side) {
|
|
case St.Side.TOP:
|
|
cr.moveTo(0, height);
|
|
cr.lineTo(Math.floor(width * 0.5), 0);
|
|
cr.lineTo(width, height);
|
|
break;
|
|
|
|
case St.Side.BOTTOM:
|
|
cr.moveTo(width, 0);
|
|
cr.lineTo(Math.floor(width * 0.5), height);
|
|
cr.lineTo(0, 0);
|
|
break;
|
|
|
|
case St.Side.LEFT:
|
|
cr.moveTo(width, height);
|
|
cr.lineTo(0, Math.floor(height * 0.5));
|
|
cr.lineTo(width, 0);
|
|
break;
|
|
|
|
case St.Side.RIGHT:
|
|
cr.moveTo(0, 0);
|
|
cr.lineTo(width, Math.floor(height * 0.5));
|
|
cr.lineTo(0, height);
|
|
break;
|
|
}
|
|
|
|
cr.strokePreserve();
|
|
|
|
Clutter.cairo_set_source_color(cr, bodyColor);
|
|
cr.fill();
|
|
cr.$dispose();
|
|
}
|
|
|