1 2(function() { 3 4 Polymer('core-overlay-layer', { 5 publish: { 6 opened: false 7 }, 8 openedChanged: function() { 9 this.classList.toggle('core-opened', this.opened); 10 }, 11 /** 12 * Adds an element to the overlay layer 13 */ 14 addElement: function(element) { 15 if (!this.parentNode) { 16 document.querySelector('body').appendChild(this); 17 } 18 if (element.parentNode !== this) { 19 element.__contents = []; 20 var ip$ = element.querySelectorAll('content'); 21 for (var i=0, l=ip$.length, n; (i<l) && (n = ip$[i]); i++) { 22 this.moveInsertedElements(n); 23 this.cacheDomLocation(n); 24 n.parentNode.removeChild(n); 25 element.__contents.push(n); 26 } 27 this.cacheDomLocation(element); 28 this.updateEventController(element); 29 var h = this.makeHost(); 30 h.shadowRoot.appendChild(element); 31 element.__host = h; 32 } 33 }, 34 makeHost: function() { 35 var h = document.createElement('overlay-host'); 36 h.createShadowRoot(); 37 this.appendChild(h); 38 return h; 39 }, 40 moveInsertedElements: function(insertionPoint) { 41 var n$ = insertionPoint.getDistributedNodes(); 42 var parent = insertionPoint.parentNode; 43 insertionPoint.__contents = []; 44 for (var i=0, l=n$.length, n; (i<l) && (n=n$[i]); i++) { 45 this.cacheDomLocation(n); 46 this.updateEventController(n); 47 insertionPoint.__contents.push(n); 48 parent.appendChild(n); 49 } 50 }, 51 updateEventController: function(element) { 52 element.eventController = this.element.findController(element); 53 }, 54 /** 55 * Removes an element from the overlay layer 56 */ 57 removeElement: function(element) { 58 element.eventController = null; 59 this.replaceElement(element); 60 var h = element.__host; 61 if (h) { 62 h.parentNode.removeChild(h); 63 } 64 }, 65 replaceElement: function(element) { 66 if (element.__contents) { 67 for (var i=0, c$=element.__contents, c; (c=c$[i]); i++) { 68 this.replaceElement(c); 69 } 70 element.__contents = null; 71 } 72 if (element.__parentNode) { 73 var n = element.__nextElementSibling && element.__nextElementSibling 74 === element.__parentNode ? element.__nextElementSibling : null; 75 element.__parentNode.insertBefore(element, n); 76 } 77 }, 78 cacheDomLocation: function(element) { 79 element.__nextElementSibling = element.nextElementSibling; 80 element.__parentNode = element.parentNode; 81 } 82 }); 83 84})(); 85