ListView.js
资源名称:ext-3.1.0.zip [点击查看]
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上传日期:2022-08-06
资源大小:9345k
文件大小:13k
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 */ /**
- * @class Ext.list.ListView
- * @extends Ext.DataView
- * <p>Ext.list.ListView is a fast and light-weight implentation of a
- * {@link Ext.grid.GridPanel Grid} like view with the following characteristics:</p>
- * <div class="mdetail-params"><ul>
- * <li>resizable columns</li>
- * <li>selectable</li>
- * <li>column widths are initially proportioned by percentage based on the container
- * width and number of columns</li>
- * <li>uses templates to render the data in any required format</li>
- * <li>no horizontal scrolling</li>
- * <li>no editing</li>
- * </ul></div>
- * <p>Example usage:</p>
- * <pre><code>
- // consume JSON of this form:
- {
- "images":[
- {
- "name":"dance_fever.jpg",
- "size":2067,
- "lastmod":1236974993000,
- "url":"images/thumbs/dance_fever.jpg"
- },
- {
- "name":"zack_sink.jpg",
- "size":2303,
- "lastmod":1236974993000,
- "url":"images/thumbs/zack_sink.jpg"
- }
- ]
- }
- var store = new Ext.data.JsonStore({
- url: 'get-images.php',
- root: 'images',
- fields: [
- 'name', 'url',
- {name:'size', type: 'float'},
- {name:'lastmod', type:'date', dateFormat:'timestamp'}
- ]
- });
- store.load();
- var listView = new Ext.list.ListView({
- store: store,
- multiSelect: true,
- emptyText: 'No images to display',
- reserveScrollOffset: true,
- columns: [{
- header: 'File',
- width: .5,
- dataIndex: 'name'
- },{
- header: 'Last Modified',
- width: .35,
- dataIndex: 'lastmod',
- tpl: '{lastmod:date("m-d h:i a")}'
- },{
- header: 'Size',
- dataIndex: 'size',
- tpl: '{size:fileSize}', // format using Ext.util.Format.fileSize()
- align: 'right'
- }]
- });
- // put it in a Panel so it looks pretty
- var panel = new Ext.Panel({
- id:'images-view',
- width:425,
- height:250,
- collapsible:true,
- layout:'fit',
- title:'Simple ListView <i>(0 items selected)</i>',
- items: listView
- });
- panel.render(document.body);
- // little bit of feedback
- listView.on('selectionchange', function(view, nodes){
- var l = nodes.length;
- var s = l != 1 ? 's' : '';
- panel.setTitle('Simple ListView <i>('+l+' item'+s+' selected)</i>');
- });
- * </code></pre>
- * @constructor
- * @param {Object} config
- * @xtype listview
- */
- Ext.list.ListView = Ext.extend(Ext.DataView, {
- /**
- * Set this property to <tt>true</tt> to disable the header click handler disabling sort
- * (defaults to <tt>false</tt>).
- * @type Boolean
- * @property disableHeaders
- */
- /**
- * @cfg {Boolean} hideHeaders
- * <tt>true</tt> to hide the {@link #internalTpl header row} (defaults to <tt>false</tt> so
- * the {@link #internalTpl header row} will be shown).
- */
- /**
- * @cfg {String} itemSelector
- * Defaults to <tt>'dl'</tt> to work with the preconfigured <b><tt>{@link Ext.DataView#tpl tpl}</tt></b>.
- * This setting specifies the CSS selector (e.g. <tt>div.some-class</tt> or <tt>span:first-child</tt>)
- * that will be used to determine what nodes the ListView will be working with.
- */
- itemSelector: 'dl',
- /**
- * @cfg {String} selectedClass The CSS class applied to a selected row (defaults to
- * <tt>'x-list-selected'</tt>). An example overriding the default styling:
- <pre><code>
- .x-list-selected {background-color: yellow;}
- </code></pre>
- * @type String
- */
- selectedClass:'x-list-selected',
- /**
- * @cfg {String} overClass The CSS class applied when over a row (defaults to
- * <tt>'x-list-over'</tt>). An example overriding the default styling:
- <pre><code>
- .x-list-over {background-color: orange;}
- </code></pre>
- * @type String
- */
- overClass:'x-list-over',
- /**
- * @cfg {Boolean} reserveScrollOffset
- * By default will defer accounting for the configured <b><tt>{@link #scrollOffset}</tt></b>
- * for 10 milliseconds. Specify <tt>true</tt> to account for the configured
- * <b><tt>{@link #scrollOffset}</tt></b> immediately.
- */
- /**
- * @cfg {Number} scrollOffset The amount of space to reserve for the scrollbar (defaults to
- * <tt>undefined</tt>). If an explicit value isn't specified, this will be automatically
- * calculated.
- */
- scrollOffset : undefined,
- /**
- * @cfg {Boolean/Object} columnResize
- * Specify <tt>true</tt> or specify a configuration object for {@link Ext.list.ListView.ColumnResizer}
- * to enable the columns to be resizable (defaults to <tt>true</tt>).
- */
- columnResize: true,
- /**
- * @cfg {Array} columns An array of column configuration objects, for example:
- * <pre><code>
- {
- align: 'right',
- dataIndex: 'size',
- header: 'Size',
- tpl: '{size:fileSize}',
- width: .35
- }
- * </code></pre>
- * Acceptable properties for each column configuration object are:
- * <div class="mdetail-params"><ul>
- * <li><b><tt>align</tt></b> : String<div class="sub-desc">Set the CSS text-align property
- * of the column. Defaults to <tt>'left'</tt>.</div></li>
- * <li><b><tt>dataIndex</tt></b> : String<div class="sub-desc">See {@link Ext.grid.Column}.
- * {@link Ext.grid.Column#dataIndex dataIndex} for details.</div></li>
- * <li><b><tt>header</tt></b> : String<div class="sub-desc">See {@link Ext.grid.Column}.
- * {@link Ext.grid.Column#header header} for details.</div></li>
- * <li><b><tt>tpl</tt></b> : String<div class="sub-desc">Specify a string to pass as the
- * configuration string for {@link Ext.XTemplate}. By default an {@link Ext.XTemplate}
- * will be implicitly created using the <tt>dataIndex</tt>.</div></li>
- * <li><b><tt>width</tt></b> : Number<div class="sub-desc">Percentage of the container width
- * this column should be allocated. Columns that have no width specified will be
- * allocated with an equal percentage to fill 100% of the container width. To easily take
- * advantage of the full container width, leave the width of at least one column undefined.
- * Note that if you do not want to take up the full width of the container, the width of
- * every column needs to be explicitly defined.</div></li>
- * </ul></div>
- */
- /**
- * @cfg {Boolean/Object} columnSort
- * Specify <tt>true</tt> or specify a configuration object for {@link Ext.list.ListView.Sorter}
- * to enable the columns to be sortable (defaults to <tt>true</tt>).
- */
- columnSort: true,
- /**
- * @cfg {String/Array} internalTpl
- * The template to be used for the header row. See {@link #tpl} for more details.
- */
- /*
- * IE has issues when setting percentage based widths to 100%. Default to 99.
- */
- maxWidth: Ext.isIE ? 99 : 100,
- initComponent : function(){
- if(this.columnResize){
- this.colResizer = new Ext.list.ColumnResizer(this.colResizer);
- this.colResizer.init(this);
- }
- if(this.columnSort){
- this.colSorter = new Ext.list.Sorter(this.columnSort);
- this.colSorter.init(this);
- }
- if(!this.internalTpl){
- this.internalTpl = new Ext.XTemplate(
- '<div class="x-list-header"><div class="x-list-header-inner">',
- '<tpl for="columns">',
- '<div style="width:{[values.width*100]}%;text-align:{align};"><em unselectable="on" id="',this.id, '-xlhd-{#}">',
- '{header}',
- '</em></div>',
- '</tpl>',
- '<div class="x-clear"></div>',
- '</div></div>',
- '<div class="x-list-body"><div class="x-list-body-inner">',
- '</div></div>'
- );
- }
- if(!this.tpl){
- this.tpl = new Ext.XTemplate(
- '<tpl for="rows">',
- '<dl>',
- '<tpl for="parent.columns">',
- '<dt style="width:{[values.width*100]}%;text-align:{align};">',
- '<em unselectable="on"<tpl if="cls"> class="{cls}</tpl>">',
- '{[values.tpl.apply(parent)]}',
- '</em></dt>',
- '</tpl>',
- '<div class="x-clear"></div>',
- '</dl>',
- '</tpl>'
- );
- };
- var cs = this.columns,
- allocatedWidth = 0,
- colsWithWidth = 0,
- len = cs.length,
- columns = [];
- for(var i = 0; i < len; i++){
- var c = cs[i];
- if(!c.isColumn) {
- c.xtype = c.xtype ? (/^lv/.test(c.xtype) ? c.xtype : 'lv' + c.xtype) : 'lvcolumn';
- c = Ext.create(c);
- }
- if(c.width) {
- allocatedWidth += c.width*100;
- colsWithWidth++;
- }
- columns.push(c);
- }
- cs = this.columns = columns;
- // auto calculate missing column widths
- if(colsWithWidth < len){
- var remaining = len - colsWithWidth;
- if(allocatedWidth < this.maxWidth){
- var perCol = ((this.maxWidth-allocatedWidth) / remaining)/100;
- for(var j = 0; j < len; j++){
- var c = cs[j];
- if(!c.width){
- c.width = perCol;
- }
- }
- }
- }
- Ext.list.ListView.superclass.initComponent.call(this);
- },
- onRender : function(){
- this.autoEl = {
- cls: 'x-list-wrap'
- };
- Ext.list.ListView.superclass.onRender.apply(this, arguments);
- this.internalTpl.overwrite(this.el, {columns: this.columns});
- this.innerBody = Ext.get(this.el.dom.childNodes[1].firstChild);
- this.innerHd = Ext.get(this.el.dom.firstChild.firstChild);
- if(this.hideHeaders){
- this.el.dom.firstChild.style.display = 'none';
- }
- },
- getTemplateTarget : function(){
- return this.innerBody;
- },
- /**
- * <p>Function which can be overridden which returns the data object passed to this
- * view's {@link #tpl template} to render the whole ListView. The returned object
- * shall contain the following properties:</p>
- * <div class="mdetail-params"><ul>
- * <li><b>columns</b> : String<div class="sub-desc">See <tt>{@link #columns}</tt></div></li>
- * <li><b>rows</b> : String<div class="sub-desc">See
- * <tt>{@link Ext.DataView}.{@link Ext.DataView#collectData collectData}</div></li>
- * </ul></div>
- * @param {Array} records An Array of {@link Ext.data.Record}s to be rendered into the DataView.
- * @param {Number} startIndex the index number of the Record being prepared for rendering.
- * @return {Object} A data object containing properties to be processed by a repeating
- * XTemplate as described above.
- */
- collectData : function(){
- var rs = Ext.list.ListView.superclass.collectData.apply(this, arguments);
- return {
- columns: this.columns,
- rows: rs
- }
- },
- verifyInternalSize : function(){
- if(this.lastSize){
- this.onResize(this.lastSize.width, this.lastSize.height);
- }
- },
- // private
- onResize : function(w, h){
- var bd = this.innerBody.dom;
- var hd = this.innerHd.dom
- if(!bd){
- return;
- }
- var bdp = bd.parentNode;
- if(Ext.isNumber(w)){
- var sw = w - Ext.num(this.scrollOffset, Ext.getScrollBarWidth());
- if(this.reserveScrollOffset || ((bdp.offsetWidth - bdp.clientWidth) > 10)){
- bd.style.width = sw + 'px';
- hd.style.width = sw + 'px';
- }else{
- bd.style.width = w + 'px';
- hd.style.width = w + 'px';
- setTimeout(function(){
- if((bdp.offsetWidth - bdp.clientWidth) > 10){
- bd.style.width = sw + 'px';
- hd.style.width = sw + 'px';
- }
- }, 10);
- }
- }
- if(Ext.isNumber(h)){
- bdp.style.height = (h - hd.parentNode.offsetHeight) + 'px';
- }
- },
- updateIndexes : function(){
- Ext.list.ListView.superclass.updateIndexes.apply(this, arguments);
- this.verifyInternalSize();
- },
- findHeaderIndex : function(hd){
- hd = hd.dom || hd;
- var pn = hd.parentNode, cs = pn.parentNode.childNodes;
- for(var i = 0, c; c = cs[i]; i++){
- if(c == pn){
- return i;
- }
- }
- return -1;
- },
- setHdWidths : function(){
- var els = this.innerHd.dom.getElementsByTagName('div');
- for(var i = 0, cs = this.columns, len = cs.length; i < len; i++){
- els[i].style.width = (cs[i].width*100) + '%';
- }
- }
- });
- Ext.reg('listview', Ext.list.ListView);
- // Backwards compatibility alias
- Ext.ListView = Ext.list.ListView;