[76] | 1 | /*! |
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| 2 | * Ext JS Library 3.4.0 |
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| 3 | * Copyright(c) 2006-2011 Sencha Inc. |
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| 4 | * licensing@sencha.com |
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| 5 | * http://www.sencha.com/license |
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| 6 | */ |
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| 7 | Ext.ns('Ext.ux'); |
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| 8 | |
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| 9 | Ext.ux.Lightbox = (function(){ |
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| 10 | var els = {}, |
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| 11 | images = [], |
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| 12 | activeImage, |
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| 13 | initialized = false, |
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| 14 | selectors = []; |
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| 15 | |
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| 16 | return { |
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| 17 | overlayOpacity: 0.85, |
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| 18 | animate: true, |
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| 19 | resizeSpeed: 8, |
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| 20 | borderSize: 10, |
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| 21 | labelImage: "Image", |
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| 22 | labelOf: "of", |
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| 23 | |
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| 24 | init: function() { |
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| 25 | this.resizeDuration = this.animate ? ((11 - this.resizeSpeed) * 0.15) : 0; |
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| 26 | this.overlayDuration = this.animate ? 0.2 : 0; |
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| 27 | |
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| 28 | if(!initialized) { |
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| 29 | Ext.apply(this, Ext.util.Observable.prototype); |
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| 30 | Ext.util.Observable.constructor.call(this); |
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| 31 | this.addEvents('open', 'close'); |
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| 32 | this.initMarkup(); |
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| 33 | this.initEvents(); |
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| 34 | initialized = true; |
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| 35 | } |
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| 36 | }, |
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| 37 | |
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| 38 | initMarkup: function() { |
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| 39 | els.shim = Ext.DomHelper.append(document.body, { |
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| 40 | tag: 'iframe', |
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| 41 | id: 'ux-lightbox-shim' |
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| 42 | }, true); |
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| 43 | els.overlay = Ext.DomHelper.append(document.body, { |
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| 44 | id: 'ux-lightbox-overlay' |
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| 45 | }, true); |
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| 46 | |
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| 47 | var lightboxTpl = new Ext.Template(this.getTemplate()); |
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| 48 | els.lightbox = lightboxTpl.append(document.body, {}, true); |
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| 49 | |
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| 50 | var ids = |
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| 51 | ['outerImageContainer', 'imageContainer', 'image', 'hoverNav', 'navPrev', 'navNext', 'loading', 'loadingLink', |
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| 52 | 'outerDataContainer', 'dataContainer', 'data', 'details', 'caption', 'imageNumber', 'bottomNav', 'navClose']; |
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| 53 | |
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| 54 | Ext.each(ids, function(id){ |
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| 55 | els[id] = Ext.get('ux-lightbox-' + id); |
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| 56 | }); |
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| 57 | |
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| 58 | Ext.each([els.overlay, els.lightbox, els.shim], function(el){ |
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| 59 | el.setVisibilityMode(Ext.Element.DISPLAY) |
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| 60 | el.hide(); |
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| 61 | }); |
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| 62 | |
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| 63 | var size = (this.animate ? 250 : 1) + 'px'; |
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| 64 | els.outerImageContainer.setStyle({ |
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| 65 | width: size, |
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| 66 | height: size |
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| 67 | }); |
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| 68 | }, |
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| 69 | |
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| 70 | getTemplate : function() { |
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| 71 | return [ |
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| 72 | '<div id="ux-lightbox">', |
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| 73 | '<div id="ux-lightbox-outerImageContainer">', |
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| 74 | '<div id="ux-lightbox-imageContainer">', |
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| 75 | '<img id="ux-lightbox-image">', |
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| 76 | '<div id="ux-lightbox-hoverNav">', |
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| 77 | '<a href="#" id="ux-lightbox-navPrev"></a>', |
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| 78 | '<a href="#" id="ux-lightbox-navNext"></a>', |
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| 79 | '</div>', |
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| 80 | '<div id="ux-lightbox-loading">', |
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| 81 | '<a id="ux-lightbox-loadingLink"></a>', |
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| 82 | '</div>', |
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| 83 | '</div>', |
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| 84 | '</div>', |
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| 85 | '<div id="ux-lightbox-outerDataContainer">', |
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| 86 | '<div id="ux-lightbox-dataContainer">', |
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| 87 | '<div id="ux-lightbox-data">', |
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| 88 | '<div id="ux-lightbox-details">', |
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| 89 | '<span id="ux-lightbox-caption"></span>', |
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| 90 | '<span id="ux-lightbox-imageNumber"></span>', |
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| 91 | '</div>', |
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| 92 | '<div id="ux-lightbox-bottomNav">', |
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| 93 | '<a href="#" id="ux-lightbox-navClose"></a>', |
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| 94 | '</div>', |
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| 95 | '</div>', |
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| 96 | '</div>', |
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| 97 | '</div>', |
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| 98 | '</div>' |
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| 99 | ]; |
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| 100 | }, |
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| 101 | |
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| 102 | initEvents: function() { |
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| 103 | var close = function(ev) { |
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| 104 | ev.preventDefault(); |
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| 105 | this.close(); |
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| 106 | }; |
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| 107 | |
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| 108 | els.overlay.on('click', close, this); |
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| 109 | els.loadingLink.on('click', close, this); |
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| 110 | els.navClose.on('click', close, this); |
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| 111 | |
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| 112 | els.lightbox.on('click', function(ev) { |
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| 113 | if(ev.getTarget().id == 'ux-lightbox') { |
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| 114 | this.close(); |
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| 115 | } |
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| 116 | }, this); |
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| 117 | |
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| 118 | els.navPrev.on('click', function(ev) { |
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| 119 | ev.preventDefault(); |
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| 120 | this.setImage(activeImage - 1); |
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| 121 | }, this); |
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| 122 | |
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| 123 | els.navNext.on('click', function(ev) { |
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| 124 | ev.preventDefault(); |
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| 125 | this.setImage(activeImage + 1); |
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| 126 | }, this); |
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| 127 | }, |
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| 128 | |
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| 129 | register: function(sel, group) { |
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| 130 | if(selectors.indexOf(sel) === -1) { |
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| 131 | selectors.push(sel); |
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| 132 | |
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| 133 | Ext.fly(document).on('click', function(ev){ |
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| 134 | var target = ev.getTarget(sel); |
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| 135 | |
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| 136 | if (target) { |
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| 137 | ev.preventDefault(); |
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| 138 | this.open(target, sel, group); |
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| 139 | } |
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| 140 | }, this); |
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| 141 | } |
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| 142 | }, |
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| 143 | |
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| 144 | open: function(image, sel, group) { |
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| 145 | group = group || false; |
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| 146 | this.setViewSize(); |
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| 147 | els.overlay.fadeIn({ |
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| 148 | duration: this.overlayDuration, |
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| 149 | endOpacity: this.overlayOpacity, |
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| 150 | callback: function() { |
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| 151 | images = []; |
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| 152 | |
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| 153 | var index = 0; |
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| 154 | if(!group) { |
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| 155 | images.push([image.href, image.title]); |
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| 156 | } |
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| 157 | else { |
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| 158 | var setItems = Ext.query(sel); |
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| 159 | Ext.each(setItems, function(item) { |
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| 160 | if(item.href) { |
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| 161 | images.push([item.href, item.title]); |
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| 162 | } |
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| 163 | }); |
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| 164 | |
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| 165 | while (images[index][0] != image.href) { |
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| 166 | index++; |
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| 167 | } |
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| 168 | } |
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| 169 | |
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| 170 | // calculate top and left offset for the lightbox |
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| 171 | var pageScroll = Ext.fly(document).getScroll(); |
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| 172 | |
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| 173 | var lightboxTop = pageScroll.top + (Ext.lib.Dom.getViewportHeight() / 10); |
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| 174 | var lightboxLeft = pageScroll.left; |
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| 175 | els.lightbox.setStyle({ |
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| 176 | top: lightboxTop + 'px', |
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| 177 | left: lightboxLeft + 'px' |
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| 178 | }).show(); |
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| 179 | |
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| 180 | this.setImage(index); |
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| 181 | |
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| 182 | this.fireEvent('open', images[index]); |
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| 183 | }, |
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| 184 | scope: this |
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| 185 | }); |
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| 186 | }, |
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| 187 | |
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| 188 | setViewSize: function(){ |
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| 189 | var viewSize = this.getViewSize(); |
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| 190 | els.overlay.setStyle({ |
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| 191 | width: viewSize[0] + 'px', |
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| 192 | height: viewSize[1] + 'px' |
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| 193 | }); |
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| 194 | els.shim.setStyle({ |
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| 195 | width: viewSize[0] + 'px', |
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| 196 | height: viewSize[1] + 'px' |
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| 197 | }).show(); |
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| 198 | }, |
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| 199 | |
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| 200 | setImage: function(index){ |
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| 201 | activeImage = index; |
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| 202 | |
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| 203 | this.disableKeyNav(); |
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| 204 | if (this.animate) { |
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| 205 | els.loading.show(); |
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| 206 | } |
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| 207 | |
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| 208 | els.image.hide(); |
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| 209 | els.hoverNav.hide(); |
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| 210 | els.navPrev.hide(); |
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| 211 | els.navNext.hide(); |
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| 212 | els.dataContainer.setOpacity(0.0001); |
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| 213 | els.imageNumber.hide(); |
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| 214 | |
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| 215 | var preload = new Image(); |
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| 216 | preload.onload = (function(){ |
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| 217 | els.image.dom.src = images[activeImage][0]; |
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| 218 | this.resizeImage(preload.width, preload.height); |
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| 219 | }).createDelegate(this); |
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| 220 | preload.src = images[activeImage][0]; |
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| 221 | }, |
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| 222 | |
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| 223 | resizeImage: function(w, h){ |
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| 224 | var wCur = els.outerImageContainer.getWidth(); |
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| 225 | var hCur = els.outerImageContainer.getHeight(); |
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| 226 | |
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| 227 | var wNew = (w + this.borderSize * 2); |
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| 228 | var hNew = (h + this.borderSize * 2); |
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| 229 | |
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| 230 | var wDiff = wCur - wNew; |
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| 231 | var hDiff = hCur - hNew; |
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| 232 | |
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| 233 | var afterResize = function(){ |
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| 234 | els.hoverNav.setWidth(els.imageContainer.getWidth() + 'px'); |
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| 235 | |
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| 236 | els.navPrev.setHeight(h + 'px'); |
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| 237 | els.navNext.setHeight(h + 'px'); |
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| 238 | |
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| 239 | els.outerDataContainer.setWidth(wNew + 'px'); |
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| 240 | |
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| 241 | this.showImage(); |
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| 242 | }; |
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| 243 | |
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| 244 | if (hDiff != 0 || wDiff != 0) { |
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| 245 | els.outerImageContainer.shift({ |
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| 246 | height: hNew, |
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| 247 | width: wNew, |
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| 248 | duration: this.resizeDuration, |
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| 249 | scope: this, |
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| 250 | callback: afterResize, |
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| 251 | delay: 50 |
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| 252 | }); |
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| 253 | } |
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| 254 | else { |
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| 255 | afterResize.call(this); |
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| 256 | } |
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| 257 | }, |
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| 258 | |
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| 259 | showImage: function(){ |
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| 260 | els.loading.hide(); |
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| 261 | els.image.fadeIn({ |
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| 262 | duration: this.resizeDuration, |
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| 263 | scope: this, |
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| 264 | callback: function(){ |
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| 265 | this.updateDetails(); |
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| 266 | } |
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| 267 | }); |
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| 268 | this.preloadImages(); |
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| 269 | }, |
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| 270 | |
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| 271 | updateDetails: function(){ |
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| 272 | var detailsWidth = els.data.getWidth(true) - els.navClose.getWidth() - 10; |
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| 273 | els.details.setWidth((detailsWidth > 0 ? detailsWidth : 0) + 'px'); |
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| 274 | |
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| 275 | els.caption.update(images[activeImage][1]); |
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| 276 | |
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| 277 | els.caption.show(); |
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| 278 | if (images.length > 1) { |
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| 279 | els.imageNumber.update(this.labelImage + ' ' + (activeImage + 1) + ' ' + this.labelOf + ' ' + images.length); |
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| 280 | els.imageNumber.show(); |
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| 281 | } |
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| 282 | |
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| 283 | els.dataContainer.fadeIn({ |
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| 284 | duration: this.resizeDuration/2, |
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| 285 | scope: this, |
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| 286 | callback: function() { |
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| 287 | var viewSize = this.getViewSize(); |
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| 288 | els.overlay.setHeight(viewSize[1] + 'px'); |
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| 289 | this.updateNav(); |
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| 290 | } |
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| 291 | }); |
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| 292 | }, |
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| 293 | |
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| 294 | updateNav: function(){ |
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| 295 | this.enableKeyNav(); |
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| 296 | |
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| 297 | els.hoverNav.show(); |
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| 298 | |
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| 299 | // if not first image in set, display prev image button |
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| 300 | if (activeImage > 0) |
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| 301 | els.navPrev.show(); |
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| 302 | |
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| 303 | // if not last image in set, display next image button |
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| 304 | if (activeImage < (images.length - 1)) |
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| 305 | els.navNext.show(); |
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| 306 | }, |
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| 307 | |
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| 308 | enableKeyNav: function() { |
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| 309 | Ext.fly(document).on('keydown', this.keyNavAction, this); |
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| 310 | }, |
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| 311 | |
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| 312 | disableKeyNav: function() { |
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| 313 | Ext.fly(document).un('keydown', this.keyNavAction, this); |
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| 314 | }, |
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| 315 | |
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| 316 | keyNavAction: function(ev) { |
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| 317 | var keyCode = ev.getKey(); |
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| 318 | |
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| 319 | if ( |
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| 320 | keyCode == 88 || // x |
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| 321 | keyCode == 67 || // c |
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| 322 | keyCode == 27 |
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| 323 | ) { |
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| 324 | this.close(); |
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| 325 | } |
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| 326 | else if (keyCode == 80 || keyCode == 37){ // display previous image |
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| 327 | if (activeImage != 0){ |
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| 328 | this.setImage(activeImage - 1); |
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| 329 | } |
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| 330 | } |
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| 331 | else if (keyCode == 78 || keyCode == 39){ // display next image |
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| 332 | if (activeImage != (images.length - 1)){ |
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| 333 | this.setImage(activeImage + 1); |
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| 334 | } |
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| 335 | } |
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| 336 | }, |
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| 337 | |
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| 338 | preloadImages: function(){ |
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| 339 | var next, prev; |
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| 340 | if (images.length > activeImage + 1) { |
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| 341 | next = new Image(); |
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| 342 | next.src = images[activeImage + 1][0]; |
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| 343 | } |
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| 344 | if (activeImage > 0) { |
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| 345 | prev = new Image(); |
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| 346 | prev.src = images[activeImage - 1][0]; |
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| 347 | } |
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| 348 | }, |
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| 349 | |
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| 350 | close: function(){ |
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| 351 | this.disableKeyNav(); |
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| 352 | els.lightbox.hide(); |
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| 353 | els.overlay.fadeOut({ |
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| 354 | duration: this.overlayDuration |
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| 355 | }); |
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| 356 | els.shim.hide(); |
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| 357 | this.fireEvent('close', activeImage); |
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| 358 | }, |
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| 359 | |
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| 360 | getViewSize: function() { |
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| 361 | return [Ext.lib.Dom.getViewWidth(), Ext.lib.Dom.getViewHeight()]; |
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| 362 | } |
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| 363 | } |
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| 364 | })(); |
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| 365 | |
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| 366 | Ext.onReady(Ext.ux.Lightbox.init, Ext.ux.Lightbox); |
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