chooser.js
资源名称:ext-3.1.0.zip [点击查看]
上传用户:dawnssy
上传日期:2022-08-06
资源大小:9345k
文件大小:6k
源码类别:
JavaScript
开发平台:
JavaScript
- /*! * Ext JS Library 3.1.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ var ImageChooser = function(config){
- 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 : '<div style="padding:10px;">No images match the specified filter</div>',
- 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(
- '<tpl for=".">',
- '<div class="thumb-wrap" id="{name}">',
- '<div class="thumb"><img src="{url}" title="{name}"></div>',
- '<span>{shortName}</span></div>',
- '</tpl>'
- );
- this.thumbTemplate.compile();
- this.detailsTemplate = new Ext.XTemplate(
- '<div class="details">',
- '<tpl for=".">',
- '<img src="{url}"><div class="details-info">',
- '<b>Image Name:</b>',
- '<span>{name}</span>',
- '<b>Size:</b>',
- '<span>{sizeString}</span>',
- '<b>Last Modified:</b>',
- '<span>{dateString}</span></div>',
- '</tpl>',
- '</div>'
- );
- 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('<div style="padding:10px;">Error loading images.</div>');
- }
- };
- String.prototype.ellipse = function(maxLength){
- if(this.length > maxLength){
- return this.substr(0, maxLength-3) + '...';
- }
- return this;
- };