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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