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1 <!-- | |
2 Copyright (c) 2014 The Polymer Project Authors. All rights reserved. | |
3 This code may only be used under the BSD style license found at http://polymer.g
ithub.io/LICENSE.txt | |
4 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt | |
5 The complete set of contributors may be found at http://polymer.github.io/CONTRI
BUTORS.txt | |
6 Code distributed by Google as part of the polymer project is also | |
7 subject to an additional IP rights grant found at http://polymer.github.io/PATEN
TS.txt | |
8 --> | |
9 | |
10 <polymer-element name="core-overlay-layer"> | |
11 <template> | |
12 <style> | |
13 :host { | |
14 position: fixed; | |
15 top: 0; | |
16 left: 0; | |
17 z-index: 1000; | |
18 display: none; | |
19 } | |
20 | |
21 :host(.core-opened) { | |
22 display: block; | |
23 } | |
24 </style> | |
25 <content></content> | |
26 </template> | |
27 <script> | |
28 (function() { | |
29 | |
30 Polymer('core-overlay-layer', { | |
31 publish: { | |
32 opened: false | |
33 }, | |
34 openedChanged: function() { | |
35 this.classList.toggle('core-opened', this.opened); | |
36 }, | |
37 /** | |
38 * Adds an element to the overlay layer | |
39 */ | |
40 addElement: function(element) { | |
41 if (!this.parentNode) { | |
42 document.querySelector('body').appendChild(this); | |
43 } | |
44 if (element.parentNode !== this) { | |
45 element.__contents = []; | |
46 var ip$ = element.querySelectorAll('content'); | |
47 for (var i=0, l=ip$.length, n; (i<l) && (n = ip$[i]); i++) { | |
48 this.moveInsertedElements(n); | |
49 this.cacheDomLocation(n); | |
50 n.parentNode.removeChild(n); | |
51 element.__contents.push(n); | |
52 } | |
53 this.cacheDomLocation(element); | |
54 this.updateEventController(element); | |
55 var h = this.makeHost(); | |
56 h.shadowRoot.appendChild(element); | |
57 element.__host = h; | |
58 } | |
59 }, | |
60 makeHost: function() { | |
61 var h = document.createElement('overlay-host'); | |
62 h.createShadowRoot(); | |
63 this.appendChild(h); | |
64 return h; | |
65 }, | |
66 moveInsertedElements: function(insertionPoint) { | |
67 var n$ = insertionPoint.getDistributedNodes(); | |
68 var parent = insertionPoint.parentNode; | |
69 insertionPoint.__contents = []; | |
70 for (var i=0, l=n$.length, n; (i<l) && (n=n$[i]); i++) { | |
71 this.cacheDomLocation(n); | |
72 this.updateEventController(n); | |
73 insertionPoint.__contents.push(n); | |
74 parent.appendChild(n); | |
75 } | |
76 }, | |
77 updateEventController: function(element) { | |
78 element.eventController = this.element.findController(element); | |
79 }, | |
80 /** | |
81 * Removes an element from the overlay layer | |
82 */ | |
83 removeElement: function(element) { | |
84 element.eventController = null; | |
85 this.replaceElement(element); | |
86 var h = element.__host; | |
87 if (h) { | |
88 h.parentNode.removeChild(h); | |
89 } | |
90 }, | |
91 replaceElement: function(element) { | |
92 if (element.__contents) { | |
93 for (var i=0, c$=element.__contents, c; (c=c$[i]); i++) { | |
94 this.replaceElement(c); | |
95 } | |
96 element.__contents = null; | |
97 } | |
98 if (element.__parentNode) { | |
99 var n = element.__nextElementSibling && element.__nextElementSibling | |
100 === element.__parentNode ? element.__nextElementSibling : null; | |
101 element.__parentNode.insertBefore(element, n); | |
102 } | |
103 }, | |
104 cacheDomLocation: function(element) { | |
105 element.__nextElementSibling = element.nextElementSibling; | |
106 element.__parentNode = element.parentNode; | |
107 } | |
108 }); | |
109 | |
110 })(); | |
111 </script> | |
112 </polymer-element> | |
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