| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| Polymer('viewer-toolbar', { |
| fadingIn: false, |
| timerId_: undefined, |
| inInitialFadeIn_: false, |
| ready: function() { |
| this.mousemoveCallback = function(e) { |
| var rect = this.getBoundingClientRect(); |
| if (e.clientX >= rect.left && e.clientX <= rect.right && |
| e.clientY >= rect.top && e.clientY <= rect.bottom) { |
| this.fadingIn = true; |
| // If we hover over the toolbar, cancel the initial fade in. |
| if (this.inInitialFadeIn_) |
| this.inInitialFadeIn_ = false; |
| } else { |
| // Initially we want to keep the toolbar up for a longer period. |
| if (!this.inInitialFadeIn_) |
| this.fadingIn = false; |
| } |
| }.bind(this); |
| }, |
| attached: function() { |
| this.parentNode.addEventListener('mousemove', this.mousemoveCallback); |
| }, |
| detached: function() { |
| this.parentNode.removeEventListener('mousemove', this.mousemoveCallback); |
| }, |
| initialFadeIn: function() { |
| this.inInitialFadeIn_ = true; |
| this.fadeIn(); |
| this.fadeOutAfterDelay(6000); |
| }, |
| fadingInChanged: function() { |
| if (this.fadingIn) { |
| this.fadeIn(); |
| } else { |
| if (this.timerId_ === undefined) |
| this.fadeOutAfterDelay(3000); |
| } |
| }, |
| fadeIn: function() { |
| this.style.opacity = 1; |
| clearTimeout(this.timerId_); |
| this.timerId_ = undefined; |
| }, |
| fadeOutAfterDelay: function(delay) { |
| this.timerId_ = setTimeout( |
| function() { |
| this.style.opacity = 0; |
| this.timerId_ = undefined; |
| this.inInitialFadeIn_ = false; |
| }.bind(this), delay); |
| } |
| }); |
