TableLayout.js
资源名称:ext-3.0.0.zip [点击查看]
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上传日期:2018-01-28
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文件大小:7k
源码类别:
中间件编程
开发平台:
JavaScript
- /*! * Ext JS Library 3.0.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ /**
- * @class Ext.layout.TableLayout
- * @extends Ext.layout.ContainerLayout
- * <p>This layout allows you to easily render content into an HTML table. The total number of columns can be
- * specified, and rowspan and colspan can be used to create complex layouts within the table.
- * This class is intended to be extended or created via the layout:'table' {@link Ext.Container#layout} config,
- * and should generally not need to be created directly via the new keyword.</p>
- * <p>Note that when creating a layout via config, the layout-specific config properties must be passed in via
- * the {@link Ext.Container#layoutConfig} object which will then be applied internally to the layout. In the
- * case of TableLayout, the only valid layout config property is {@link #columns}. However, the items added to a
- * TableLayout can supply the following table-specific config properties:</p>
- * <ul>
- * <li><b>rowspan</b> Applied to the table cell containing the item.</li>
- * <li><b>colspan</b> Applied to the table cell containing the item.</li>
- * <li><b>cellId</b> An id applied to the table cell containing the item.</li>
- * <li><b>cellCls</b> A CSS class name added to the table cell containing the item.</li>
- * </ul>
- * <p>The basic concept of building up a TableLayout is conceptually very similar to building up a standard
- * HTML table. You simply add each panel (or "cell") that you want to include along with any span attributes
- * specified as the special config properties of rowspan and colspan which work exactly like their HTML counterparts.
- * Rather than explicitly creating and nesting rows and columns as you would in HTML, you simply specify the
- * total column count in the layoutConfig and start adding panels in their natural order from left to right,
- * top to bottom. The layout will automatically figure out, based on the column count, rowspans and colspans,
- * how to position each panel within the table. Just like with HTML tables, your rowspans and colspans must add
- * up correctly in your overall layout or you'll end up with missing and/or extra cells! Example usage:</p>
- * <pre><code>
- // This code will generate a layout table that is 3 columns by 2 rows
- // with some spanning included. The basic layout will be:
- // +--------+-----------------+
- // | A | B |
- // | |--------+--------|
- // | | C | D |
- // +--------+--------+--------+
- var table = new Ext.Panel({
- title: 'Table Layout',
- layout:'table',
- defaults: {
- // applied to each contained panel
- bodyStyle:'padding:20px'
- },
- layoutConfig: {
- // The total column count must be specified here
- columns: 3
- },
- items: [{
- html: '<p>Cell A content</p>',
- rowspan: 2
- },{
- html: '<p>Cell B content</p>',
- colspan: 2
- },{
- html: '<p>Cell C content</p>',
- cellCls: 'highlight'
- },{
- html: '<p>Cell D content</p>'
- }]
- });
- </code></pre>
- */
- Ext.layout.TableLayout = Ext.extend(Ext.layout.ContainerLayout, {
- /**
- * @cfg {Number} columns
- * The total number of columns to create in the table for this layout. If not specified, all Components added to
- * this layout will be rendered into a single row using one column per Component.
- */
- // private
- monitorResize:false,
- /**
- * @cfg {Object} tableAttrs
- * <p>An object containing properties which are added to the {@link Ext.DomHelper DomHelper} specification
- * used to create the layout's <tt><table></tt> element. Example:</p><pre><code>
- {
- xtype: 'panel',
- layout: 'table',
- layoutConfig: {
- tableAttrs: {
- style: {
- width: '100%'
- }
- },
- columns: 3
- }
- }</code></pre>
- */
- tableAttrs:null,
- // private
- setContainer : function(ct){
- Ext.layout.TableLayout.superclass.setContainer.call(this, ct);
- this.currentRow = 0;
- this.currentColumn = 0;
- this.cells = [];
- },
- // private
- onLayout : function(ct, target){
- var cs = ct.items.items, len = cs.length, c, i;
- if(!this.table){
- target.addClass('x-table-layout-ct');
- this.table = target.createChild(
- Ext.apply({tag:'table', cls:'x-table-layout', cellspacing: 0, cn: {tag: 'tbody'}}, this.tableAttrs), null, true);
- }
- this.renderAll(ct, target);
- },
- // private
- getRow : function(index){
- var row = this.table.tBodies[0].childNodes[index];
- if(!row){
- row = document.createElement('tr');
- this.table.tBodies[0].appendChild(row);
- }
- return row;
- },
- // private
- getNextCell : function(c){
- var cell = this.getNextNonSpan(this.currentColumn, this.currentRow);
- var curCol = this.currentColumn = cell[0], curRow = this.currentRow = cell[1];
- for(var rowIndex = curRow; rowIndex < curRow + (c.rowspan || 1); rowIndex++){
- if(!this.cells[rowIndex]){
- this.cells[rowIndex] = [];
- }
- for(var colIndex = curCol; colIndex < curCol + (c.colspan || 1); colIndex++){
- this.cells[rowIndex][colIndex] = true;
- }
- }
- var td = document.createElement('td');
- if(c.cellId){
- td.id = c.cellId;
- }
- var cls = 'x-table-layout-cell';
- if(c.cellCls){
- cls += ' ' + c.cellCls;
- }
- td.className = cls;
- if(c.colspan){
- td.colSpan = c.colspan;
- }
- if(c.rowspan){
- td.rowSpan = c.rowspan;
- }
- this.getRow(curRow).appendChild(td);
- return td;
- },
- // private
- getNextNonSpan: function(colIndex, rowIndex){
- var cols = this.columns;
- while((cols && colIndex >= cols) || (this.cells[rowIndex] && this.cells[rowIndex][colIndex])) {
- if(cols && colIndex >= cols){
- rowIndex++;
- colIndex = 0;
- }else{
- colIndex++;
- }
- }
- return [colIndex, rowIndex];
- },
- // private
- renderItem : function(c, position, target){
- if(c && !c.rendered){
- c.render(this.getNextCell(c));
- if(this.extraCls){
- var t = c.getPositionEl ? c.getPositionEl() : c;
- t.addClass(this.extraCls);
- }
- }
- },
- // private
- isValidParent : function(c, target){
- return true;
- }
- /**
- * @property activeItem
- * @hide
- */
- });
- Ext.Container.LAYOUTS['table'] = Ext.layout.TableLayout;