1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
// Copyright (c) 2011 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.
// Counter used to give webkit animations unique names.
var animationCounter = 0;
function addAnimation(code) {
var name = 'anim' + animationCounter;
animationCounter++;
var rules = document.createTextNode(
'@-webkit-keyframes ' + name + ' {' + code + '}');
var el = document.createElement('style');
el.type = 'text/css';
el.appendChild(rules);
el.setAttribute('id', name);
document.body.appendChild(el);
return name;
}
/**
* Fades in an element. Used for both printing options and error messages
* appearing underneath the textfields.
* @param {HTMLElement} el The element to be faded in.
*/
function fadeInElement(el) {
if (el.classList.contains('visible'))
return;
el.classList.remove('closing');
el.style.height = 'auto';
var height = el.offsetHeight;
el.style.height = height + 'px';
var animName = addAnimation(
'0% { opacity: 0; height: 0; } ' +
'80% { height: ' + (height + 4) + 'px; }' +
'100% { opacity: 1; height: ' + height + 'px; }');
el.style.webkitAnimationName = animName;
el.classList.add('visible');
el.addEventListener('webkitAnimationEnd', function() {
el.style.height = '';
el.style.webkitAnimationName = '';
fadeInOutCleanup(animName);
el.removeEventListener('webkitAnimationEnd', arguments.callee, false);
}, false );
}
/**
* Fades out an element. Used for both printing options and error messages
* appearing underneath the textfields.
* @param {HTMLElement} el The element to be faded out.
*/
function fadeOutElement(el) {
if (!el.classList.contains('visible'))
return;
el.style.height = 'auto';
var height = el.offsetHeight;
el.style.height = height + 'px';
var animName = addAnimation(
'0% { opacity: 1; height: ' + height + 'px; }' +
'100% { opacity: 1; height: 0; }');
el.style.webkitAnimationName = animName;
el.classList.add('closing');
el.classList.remove('visible');
el.addEventListener('webkitAnimationEnd', function() {
fadeInOutCleanup(animName);
el.removeEventListener('webkitAnimationEnd', arguments.callee, false);
}, false );
}
/**
* Removes the <style> element corrsponding to |animationName| from the DOM.
* @param {string} animationName The name of the animation to be removed.
*/
function fadeInOutCleanup(animationName) {
animEl = document.getElementById(animationName);
if (animEl)
animEl.parentNode.removeChild(animEl);
}
/**
* Fades in a printing option existing under |el|.
* @param {HTMLElement} el The element to hide.
*/
function fadeInOption(el) {
if (el.classList.contains('visible'))
return;
wrapContentsInDiv(el.querySelector('h1'), ['invisible']);
var rightColumn = el.querySelector('.right-column');
wrapContentsInDiv(rightColumn, ['invisible']);
var toAnimate = el.querySelectorAll('.collapsible');
for (var i = 0; i < toAnimate.length; i++)
fadeInElement(toAnimate[i]);
el.classList.add('visible');
}
/**
* Fades out a printing option existing under |el|.
* @param {HTMLElement} el The element to hide.
*/
function fadeOutOption(el) {
if (!el.classList.contains('visible'))
return;
wrapContentsInDiv(el.querySelector('h1'), ['visible']);
var rightColumn = el.querySelector('.right-column');
wrapContentsInDiv(rightColumn, ['visible']);
var toAnimate = el.querySelectorAll('.collapsible');
for (var i = 0; i < toAnimate.length; i++)
fadeOutElement(toAnimate[i]);
el.classList.remove('visible');
}
/**
* Wraps the contents of |el| in a div element and attaches css classes
* |classes| in the new div, only if has not been already done. It is neccesary
* for animating the height of table cells.
* @param {HTMLElement} el The element to be processed.
* @param {array} classes The css classes to add.
*/
function wrapContentsInDiv(el, classes) {
var div = el.querySelector('div');
if (!div || !div.classList.contains('collapsible')) {
div = document.createElement('div');
while (el.childNodes.length > 0)
div.appendChild(el.firstChild);
el.appendChild(div);
}
div.className = '';
div.classList.add('collapsible');
for (var i = 0; i < classes.length; i++)
div.classList.add(classes[i]);
}
|
