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HTML5定制全选列头

随着HTML5产品分支的不断深入使用,HTML5的需求也是越来越多,表格组件的使用也不例外,什么排序,分页,自动列宽等。最近有客户提出了如果让表格的列头加上全选的功能。细细分析其实就是两部分,表格的body部分是勾选的列,表头也绘制成勾选的列。
对于表格body部分的勾选,最简单是应用TWaver默认的boolean类型的render,方法很简单,只要在创建表格列时设置下面的语句就行:

column.setValueType(‘boolean‘);

 

主要就是绘制表头的render,表头的render设置也是很easy,我们只要在表头的div中加上checkbox,然后再给checkbox加上动作,如果勾选上,就让这一列所有的数据都为true,反之亦然。代码如下:

var checkbox = document.createElement(‘input‘);checkbox.setAttribute("type","checkbox");checkbox.checked = true;checkbox.onclick = function(e){var checked = this.checked;column.checked = checked;databox.forEach(function(element){    element.setClient("nVisible",checked);});}column.renderHeader = function(div){    div.style.textAlign = ‘center‘;    div.appendChild(checkbox);}

 


这样的默认效果感觉还不是那么美观,我们用图片来替代checkbox也可以达到同样的效果,再来看看这张图,感觉是不是好看了一点。

完整的代码实现见下方:

<!DOCTYPE html><meta charset="utf-8"><html><head>    <title>Custom Table</title>    <style>        .visible-header{background:url(checkeye.png) 0px 0px; border:none; width: 12px; height: 7px; cursor: pointer;}        .unVisible-header{background:url(checkeye.png) -17px 0px;}    </style>    <script type="text/javascript" src="http://www.mamicode.com/twaver.js"></script>    <script type="text/javascript">        function init() {            var box = new twaver.ElementBox();            initDataBox(box);            var table = new twaver.controls.Table(box);            table.setEditable(true);            var tablePane = new twaver.controls.TablePane(table);            var visibleColumn = createColumn(table, ‘Visible‘, ‘nVisible‘, ‘client‘, ‘boolean‘, 30);            createColumn(table, ‘Id‘, ‘id‘, ‘accessor‘, ‘string‘,300);            createColumn(table, ‘Name‘, ‘name‘, ‘accessor‘, ‘string‘,70);            renderHeaderCheckBox(visibleColumn,box);            visibleColumn.renderCell = function(cell){renderCellCheckbox(cell)};            document.body.appendChild(tablePane.getView());            tablePane.getView().style.left = ‘50px‘;            tablePane.getView().style.top = ‘50px‘;            tablePane.getView().style.width = ‘400px‘;            tablePane.getView().style.height = ‘800px‘;        }        function renderHeaderCheckBox(column,databox){            var checkbox = document.createElement(‘input‘);            checkbox.setAttribute("type","button");            checkbox.setAttribute("class","visible-header");            checkbox.checked = true;            checkbox.onclick = function(e){                var checked = this.checked;                column.checked = checked;                if(checked){                    checkbox.setAttribute("class","visible-header");                }else{                    checkbox.setAttribute("class","visible-header unVisible-header");                }                this.checked = !this.checked;                databox.forEach(function(element){                    element.setClient("nVisible",checked);                });            }            column.renderHeader = function(div){                div.style.textAlign = ‘center‘;                div.appendChild(checkbox);            }        }        function renderCellCheckbox(cell){                var checkbox = document.createElement(‘input‘);                checkbox.setAttribute("type","button");                var checked = cell.data.getClient("nVisible");                if(checked){                    checkbox.setAttribute("class","visible-header");                }else{                    checkbox.setAttribute("class","visible-header unVisible-header");                }                checkbox.onclick = function(e){                    var checked = cell.data.getClient("nVisible");                    cell.data.setClient("nVisible",!checked);                }                cell.div.style.textAlign = ‘center‘;                cell.div.appendChild(checkbox);        }        function initDataBox(box){            for(var i = 0; i < 10; i++){                var node = new twaver.Node();                node.setName("node"+i);                node.setClient(‘nVisible‘,true);                box.add(node);            }        }        function createColumn(table, name, propertyName, propertyType, valueType, width) {            var column = new twaver.Column(name);            column.setName(name);            column.setPropertyName(propertyName);            column.setPropertyType(propertyType);            if (valueType) column.setValueType(valueType);            if(width) column.setWidth(width);            column.setEditable(true);            column.setSortable(false);            table.getColumnBox().add(column);            return column;        }    </script></head><body onl oad="init()" style="margin:0;"></body></html>

 

HTML5定制全选列头