this.config = config;
}
ImageChooser.prototype = {
// cache data by image name for easy lookup
lookup : {},
show : function(el, callback){
if(!this.win){
this.initTemplates();
this.store = new Ext.data.JsonStore({
url: this.config.url,
root: 'images',
fields: [
'name', 'url',
{name:'size', type: 'float'},
{name:'lastmod', type:'date', dateFormat:'timestamp'}
],
listeners: {
'load': {fn:function(){ this.view.select(0); }, scope:this, single:true}
}
});
this.store.load();
var formatSize = function(data){
if(data.size < 1024) {
return data.size + " bytes";
} else {
return (Math.round(((data.size*10) / 1024))/10) + " KB";
}
};
var formatData = function(data){
data.shortName = data.name.ellipse(15);
data.sizeString = formatSize(data);
data.dateString = new Date(data.lastmod).format("m/d/Y g:i a");
this.lookup[data.name] = data;
return data;
};
this.view = new Ext.DataView({
tpl: this.thumbTemplate,
singleSelect: true,
overClass:'x-view-over',
itemSelector: 'div.thumb-wrap',
emptyText : '
No images match the specified filter
',store: this.store,
listeners: {
'selectionchange': {fn:this.showDetails, scope:this, buffer:100},
'dblclick' : {fn:this.doCallback, scope:this},
'loadexception' : {fn:this.onLoadException, scope:this},
'beforeselect' : {fn:function(view){
return view.store.getRange().length > 0;
}}
},
prepareData: formatData.createDelegate(this)
});
var cfg = {
title: 'Choose an Image',
id: 'img-chooser-dlg',
layout: 'border',
minWidth: 500,
minHeight: 300,
modal: true,
closeAction: 'hide',
border: false,
items:[{
id: 'img-chooser-view',
region: 'center',
autoScroll: true,
items: this.view,
tbar:[{
text: 'Filter:'
},{
xtype: 'textfield',
id: 'filter',
selectOnFocus: true,
width: 100,
listeners: {
'render': {fn:function(){
Ext.getCmp('filter').getEl().on('keyup', function(){
this.filter();
}, this, {buffer:500});
}, scope:this}
}
}, ' ', '-', {
text: 'Sort By:'
}, {
id: 'sortSelect',
xtype: 'combo',
typeAhead: true,
triggerAction: 'all',
width: 100,
editable: false,
mode: 'local',
displayField: 'desc',
valueField: 'name',
lazyInit: false,
value: 'name',
store: new Ext.data.ArrayStore({
fields: ['name', 'desc'],
data : [['name', 'Name'],['size', 'File Size'],['lastmod', 'Last Modified']]
}),
listeners: {
'select': {fn:this.sortImages, scope:this}
}
}]
},{
id: 'img-detail-panel',
region: 'east',
split: true,
width: 150,
minWidth: 150,
maxWidth: 250
}],
buttons: [{
id: 'ok-btn',
text: 'OK',
handler: this.doCallback,
scope: this
},{
text: 'Cancel',
handler: function(){ this.win.hide(); },
scope: this
}],
keys: {
key: 27, // Esc key
handler: function(){ this.win.hide(); },
scope: this
}
};
Ext.apply(cfg, this.config);
this.win = new Ext.Window(cfg);
}
this.reset();
this.win.show(el);
this.callback = callback;
this.animateTarget = el;
},
initTemplates : function(){
this.thumbTemplate = new Ext.XTemplate(
'
'
',
'
',
'{shortName}
','
'{shortName}
'
);
this.thumbTemplate.compile();
this.detailsTemplate = new Ext.XTemplate(
'
',
'',
'
' ',
'
''
'
',
'Image Name:',
'{name}',
'Size:',
'{sizeString}',
'Last Modified:',
'{dateString}
','Image Name:',
'{name}',
'Size:',
'{sizeString}',
'Last Modified:',
'{dateString}
'
'
);
this.detailsTemplate.compile();
},
showDetails : function(){
var selNode = this.view.getSelectedNodes();
var detailEl = Ext.getCmp('img-detail-panel').body;
if(selNode && selNode.length > 0){
selNode = selNode[0];
Ext.getCmp('ok-btn').enable();
var data = this.lookup[selNode.id];
detailEl.hide();
this.detailsTemplate.overwrite(detailEl, data);
detailEl.slideIn('l', {stopFx:true,duration:.2});
}else{
Ext.getCmp('ok-btn').disable();
detailEl.update('');
}
},
filter : function(){
var filter = Ext.getCmp('filter');
this.view.store.filter('name', filter.getValue());
this.view.select(0);
},
sortImages : function(){
var v = Ext.getCmp('sortSelect').getValue();
this.view.store.sort(v, v == 'name' ? 'asc' : 'desc');
this.view.select(0);
},
reset : function(){
if(this.win.rendered){
Ext.getCmp('filter').reset();
this.view.getEl().dom.scrollTop = 0;
}
this.view.store.clearFilter();
this.view.select(0);
},
doCallback : function(){
var selNode = this.view.getSelectedNodes()[0];
var callback = this.callback;
var lookup = this.lookup;
this.win.hide(this.animateTarget, function(){
if(selNode && callback){
var data = lookup[selNode.id];
callback(data);
}
});
},
onLoadException : function(v,o){
this.view.getEl().update('
Error loading images.
');}
};
String.prototype.ellipse = function(maxLength){
if(this.length > maxLength){
return this.substr(0, maxLength-3) + '...';
}
return this;
};