docs/source/chooser.html

   1 <html>\r
   2 <head>\r
   3   <title>The source code</title>\r
   4     <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />\r
   5     <script type="text/javascript" src="../resources/prettify/prettify.js"></script>\r
   6 </head>\r
   7 <body  onload="prettyPrint();">\r
   8     <pre class="prettyprint lang-js">var ImageChooser = function(config){\r
   9         this.config = config;\r
  10 }\r
  11 \r
  12 ImageChooser.prototype = {\r
  13     // cache data by image name for easy lookup\r
  14     lookup : {},\r
  15 \r
  16         show : function(el, callback){\r
  17                 if(!this.win){\r
  18                         this.initTemplates();\r
  19 \r
  20                         this.store = new Ext.data.JsonStore({\r
  21                             url: this.config.url,\r
  22                             root: 'images',\r
  23                             fields: [\r
  24                                 'name', 'url',\r
  25                                 {name:'size', type: 'float'},\r
  26                                 {name:'lastmod', type:'date', dateFormat:'timestamp'}\r
  27                             ],\r
  28                             listeners: {\r
  29                                 'load': {fn:function(){ this.view.select(0); }, scope:this, single:true}\r
  30                             }\r
  31                         });\r
  32                         this.store.load();\r
  33 \r
  34                         var formatSize = function(data){\r
  35                         if(data.size < 1024) {\r
  36                             return data.size + " bytes";\r
  37                         } else {\r
  38                             return (Math.round(((data.size*10) / 1024))/10) + " KB";\r
  39                         }\r
  40                     };\r
  41 \r
  42                         var formatData = function(data){\r
  43                         data.shortName = data.name.ellipse(15);\r
  44                         data.sizeString = formatSize(data);\r
  45                         data.dateString = new Date(data.lastmod).format("m/d/Y g:i a");\r
  46                         this.lookup[data.name] = data;\r
  47                         return data;\r
  48                     };\r
  49 \r
  50                     this.view = new Ext.DataView({\r
  51                                 tpl: this.thumbTemplate,\r
  52                                 singleSelect: true,\r
  53                                 overClass:'x-view-over',\r
  54                                 itemSelector: 'div.thumb-wrap',\r
  55                                 emptyText : '<div style="padding:10px;">No images match the specified filter</div>',\r
  56                                 store: this.store,\r
  57                                 listeners: {\r
  58                                         'selectionchange': {fn:this.showDetails, scope:this, buffer:100},\r
  59                                         'dblclick'       : {fn:this.doCallback, scope:this},\r
  60                                         'loadexception'  : {fn:this.onLoadException, scope:this},\r
  61                                         'beforeselect'   : {fn:function(view){\r
  62                                         return view.store.getRange().length > 0;\r
  63                                     }}\r
  64                                 },\r
  65                                 prepareData: formatData.createDelegate(this)\r
  66                         });\r
  67 \r
  68                         var cfg = {\r
  69                         title: 'Choose an Image',\r
  70                         id: 'img-chooser-dlg',\r
  71                         layout: 'border',\r
  72                                 minWidth: 500,\r
  73                                 minHeight: 300,\r
  74                                 modal: true,\r
  75                                 closeAction: 'hide',\r
  76                                 border: false,\r
  77                                 items:[{\r
  78                                         id: 'img-chooser-view',\r
  79                                         region: 'center',\r
  80                                         autoScroll: true,\r
  81                                         items: this.view,\r
  82                     tbar:[{\r
  83                         text: 'Filter:'\r
  84                     },{\r
  85                         xtype: 'textfield',\r
  86                         id: 'filter',\r
  87                         selectOnFocus: true,\r
  88                         width: 100,\r
  89                         listeners: {\r
  90                                 'render': {fn:function(){\r
  91                                                         Ext.getCmp('filter').getEl().on('keyup', function(){\r
  92                                                                 this.filter();\r
  93                                                         }, this, {buffer:500});\r
  94                                 }, scope:this}\r
  95                         }\r
  96                     }, ' ', '-', {\r
  97                         text: 'Sort By:'\r
  98                     }, {\r
  99                         id: 'sortSelect',\r
 100                         xtype: 'combo',\r
 101                                         typeAhead: true,\r
 102                                         triggerAction: 'all',\r
 103                                         width: 100,\r
 104                                         editable: false,\r
 105                                         mode: 'local',\r
 106                                         displayField: 'desc',\r
 107                                         valueField: 'name',\r
 108                                         lazyInit: false,\r
 109                                         value: 'name',\r
 110                                         store: new Ext.data.ArrayStore({\r
 111                                                 fields: ['name', 'desc'],\r
 112                                                 data : [['name', 'Name'],['size', 'File Size'],['lastmod', 'Last Modified']]\r
 113                                             }),\r
 114                                             listeners: {\r
 115                                                         'select': {fn:this.sortImages, scope:this}\r
 116                                             }\r
 117                                     }]\r
 118                                 },{\r
 119                                         id: 'img-detail-panel',\r
 120                                         region: 'east',\r
 121                                         split: true,\r
 122                                         width: 150,\r
 123                                         minWidth: 150,\r
 124                                         maxWidth: 250\r
 125                                 }],\r
 126                                 buttons: [{\r
 127                                         id: 'ok-btn',\r
 128                                         text: 'OK',\r
 129                                         handler: this.doCallback,\r
 130                                         scope: this\r
 131                                 },{\r
 132                                         text: 'Cancel',\r
 133                                         handler: function(){ this.win.hide(); },\r
 134                                         scope: this\r
 135                                 }],\r
 136                                 keys: {\r
 137                                         key: 27, // Esc key\r
 138                                         handler: function(){ this.win.hide(); },\r
 139                                         scope: this\r
 140                                 }\r
 141                         };\r
 142                         Ext.apply(cfg, this.config);\r
 143                     this.win = new Ext.Window(cfg);\r
 144                 }\r
 145 \r
 146                 this.reset();\r
 147             this.win.show(el);\r
 148                 this.callback = callback;\r
 149                 this.animateTarget = el;\r
 150         },\r
 151 \r
 152         initTemplates : function(){\r
 153                 this.thumbTemplate = new Ext.XTemplate(\r
 154                         '<tpl for=".">',\r
 155                                 '<div class="thumb-wrap" id="{name}">',\r
 156                                 '<div class="thumb"><img src="{url}" title="{name}"></div>',\r
 157                                 '<span>{shortName}</span></div>',\r
 158                         '</tpl>'\r
 159                 );\r
 160                 this.thumbTemplate.compile();\r
 161 \r
 162                 this.detailsTemplate = new Ext.XTemplate(\r
 163                         '<div class="details">',\r
 164                                 '<tpl for=".">',\r
 165                                         '<img src="{url}"><div class="details-info">',\r
 166                                         '<b>Image Name:</b>',\r
 167                                         '<span>{name}</span>',\r
 168                                         '<b>Size:</b>',\r
 169                                         '<span>{sizeString}</span>',\r
 170                                         '<b>Last Modified:</b>',\r
 171                                         '<span>{dateString}</span></div>',\r
 172                                 '</tpl>',\r
 173                         '</div>'\r
 174                 );\r
 175                 this.detailsTemplate.compile();\r
 176         },\r
 177 \r
 178         showDetails : function(){\r
 179             var selNode = this.view.getSelectedNodes();\r
 180             var detailEl = Ext.getCmp('img-detail-panel').body;\r
 181                 if(selNode && selNode.length > 0){\r
 182                         selNode = selNode[0];\r
 183                         Ext.getCmp('ok-btn').enable();\r
 184                     var data = this.lookup[selNode.id];\r
 185             detailEl.hide();\r
 186             this.detailsTemplate.overwrite(detailEl, data);\r
 187             detailEl.slideIn('l', {stopFx:true,duration:.2});\r
 188                 }else{\r
 189                     Ext.getCmp('ok-btn').disable();\r
 190                     detailEl.update('');\r
 191                 }\r
 192         },\r
 193 \r
 194         filter : function(){\r
 195                 var filter = Ext.getCmp('filter');\r
 196                 this.view.store.filter('name', filter.getValue());\r
 197                 this.view.select(0);\r
 198         },\r
 199 \r
 200         sortImages : function(){\r
 201                 var v = Ext.getCmp('sortSelect').getValue();\r
 202         this.view.store.sort(v, v == 'name' ? 'asc' : 'desc');\r
 203         this.view.select(0);\r
 204     },\r
 205 \r
 206         reset : function(){\r
 207                 if(this.win.rendered){\r
 208                         Ext.getCmp('filter').reset();\r
 209                         this.view.getEl().dom.scrollTop = 0;\r
 210                 }\r
 211             this.view.store.clearFilter();\r
 212                 this.view.select(0);\r
 213         },\r
 214 \r
 215         doCallback : function(){\r
 216         var selNode = this.view.getSelectedNodes()[0];\r
 217                 var callback = this.callback;\r
 218                 var lookup = this.lookup;\r
 219                 this.win.hide(this.animateTarget, function(){\r
 220             if(selNode && callback){\r
 221                                 var data = lookup[selNode.id];\r
 222                                 callback(data);\r
 223                         }\r
 224                 });\r
 225     },\r
 226 \r
 227         onLoadException : function(v,o){\r
 228             this.view.getEl().update('<div style="padding:10px;">Error loading images.</div>');\r
 229         }\r
 230 };\r
 231 \r
 232 String.prototype.ellipse = function(maxLength){\r
 233     if(this.length > maxLength){\r
 234         return this.substr(0, maxLength-3) + '...';\r
 235     }\r
 236     return this;\r
 237 };\r
 238 </pre>    \r
 239 </body>\r
 240 </html>