组件概述:
现在的项目中也采用了Ext作为前端页面显示的部分。初期用ext的时候都是在页面中写大量的javascript代码,大部分的代码都是重复新的工作, 如声明一个GridPanel,声明一个store,reader等等,而且以后的页面也不容易维护,新人来了上手也比较慢,需要学习大量的ext的知 识。于是就决定把ext的三大组件封装成ext的组件。第一个封装的就是Ext.grid.GridPanel组件。GridPanel组件封装了Ext 的GridPanel。该组件会在页面生成一个div标签,作为Ext.GridPanel显示的容器。div的id为”div_”+gridId,其中 gridId是组件的id。使用该组件的前提条件是保证页面内已经引入了运行ext必需的库文件,如ext-all.js,ext- core.js,ext-all.css。
使用说明:
在一个web应用中使用GridPanel组件前需要在tapestry的应用程序文件(如Unilib.application)中注册组件,如下所示:
<component-type type="GridPanel" specification-path="/com/lihj/components/grid/GridPanel.jwc"/>
在页面内的使用方法如下:
- <span jwcid="myGrid@GridPanel"
- gridId="myGrid"
- url="document.getElementById('info').href"
- title=" 列表"
- reader="id:int,personByExpenceAccountId,personByConfirmPersonId,personByPayPersonId,money,remark,date,capitalizationMoney"
- header="{header: '报销人', width: 50, sortable: true, dataIndex: 'personByExpenceAccountId'},
- {header: '批准人', width: 50, sortable: true, dataIndex: 'personByConfirmPersonId'},
- {header: '出纳', width: 50, sortable: true, dataIndex: 'personByPayPersonId',renderer:buildDetailLink},
- {header: '报销金额小写', width: 50, sortable: true, dataIndex: 'money'},
- {header: '备注', width: 60, sortable: true, dataIndex: 'remark'},
- {header: '报销日期', width: 50, sortable: true, dataIndex: 'date'},
- {header: '报销金额大写', width: 50, sortable: true, dataIndex: 'capitalizationMoney'},
- {header: '操作', width: 20, sortable: false, dataIndex: 'id',renderer:buildEditLink}"
- />
<span jwcid="myGrid@GridPanel"
gridId="myGrid"
url="document.getElementById('info').href"
title=" 列表"
reader="id:int,personByExpenceAccountId,personByConfirmPersonId,personByPayPersonId,money,remark,date,capitalizationMoney"
header="{header: '报销人', width: 50, sortable: true, dataIndex: 'personByExpenceAccountId'},
{header: '批准人', width: 50, sortable: true, dataIndex: 'personByConfirmPersonId'},
{header: '出纳', width: 50, sortable: true, dataIndex: 'personByPayPersonId',renderer:buildDetailLink},
{header: '报销金额小写', width: 50, sortable: true, dataIndex: 'money'},
{header: '备注', width: 60, sortable: true, dataIndex: 'remark'},
{header: '报销日期', width: 50, sortable: true, dataIndex: 'date'},
{header: '报销金额大写', width: 50, sortable: true, dataIndex: 'capitalizationMoney'},
{header: '操作', width: 20, sortable: false, dataIndex: 'id',renderer:buildEditLink}"
/>
组件生成的代码如下:
下面是源代码:
该组件一共有四个文件:GridPanel.java,GridPanel,jwc,GridPanel,script,GridPanel.properties
也可通过附件打包下载。
GridPanel.java
- package com.lihj.components.grid;
-
- import org.apache.tapestry.*;
- import org.apache.hivemind.Messages;
-
- import java.util.HashMap;
- import java.util.Map;
- import java.util.regex.Pattern;
- import java.util.regex.Matcher;
-
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- public abstract class GridPanel extends AbstractComponent {
-
- public abstract IScript getScript();
-
- private static final String SYM_GRIDID = "gridId";
- private static final String SYM_CONTAINERNAME = "containerName";
- private static final String SYM_URL = "url";
- private static final String SYM_TITLE = "title";
- private static final String SYM_READER = "reader";
- private static final String SYM_HEADER = "header";
- private static final String SYM_PAGESIZE = "pageSize";
- private static final String SYM_AUTOHEIGHT = "autoHeight";
- private static final String SYM_HEIGHT = "height";
-
- public abstract String getGridId();
-
- public abstract String getUrl();
-
- public abstract String getTitle();
-
- public abstract String getReader();
-
- public abstract String getHeader();
-
- public abstract String getPageSize();
-
- public abstract String getAutoHeight();
-
- public abstract String getHeight();
-
- protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) {
- PageRenderSupport pageRenderSupport = TapestryUtils.getPageRenderSupport(cycle, this);
- Messages messages = getMessages();
-
- String containerName = "div_" + getGridId();
- String autoHeight = getAutoHeight();
- if (autoHeight == null) {
- autoHeight = messages.getMessage("autoHeight.default");
- }
-
- String height = getHeight();
- String reader = getReader();
-
-
- Pattern p = Pattern.compile("/r/n|//s");
- Matcher m = p.matcher(reader);
- reader = m.replaceAll("");
-
-
- String pageSize = getPageSize();
- if(pageSize==null){
- pageSize= messages.getMessage("PageSize.default");
- }
- String[] headerArray = reader.split(",");
- StringBuilder sb = new StringBuilder("[");
- for (String s : headerArray) {
- sb.append("{");
- if (s.contains(":")) {
- String[] ss = s.split(":");
- sb.append("name:'" + ss[0] + "',");
- sb.append("type:'" + ss[1] + "'");
- } else {
- sb.append("name:'" + s + "'");
- }
- sb.append("},");
- }
- sb.deleteCharAt(sb.toString().length() - 1);
- sb.append("]");
- Map symbols = new HashMap();
-
- symbols.put(SYM_GRIDID, getGridId());
- symbols.put(SYM_CONTAINERNAME, containerName);
- symbols.put(SYM_URL, getUrl());
- symbols.put(SYM_TITLE, getTitle());
- symbols.put(SYM_READER, sb.toString());
- symbols.put(SYM_HEADER, getHeader());
- symbols.put(SYM_PAGESIZE, pageSize);
- symbols.put(SYM_AUTOHEIGHT, autoHeight);
- symbols.put(SYM_HEIGHT, getHeight());
-
- getScript().execute(cycle, pageRenderSupport, symbols);
- writer.beginEmpty("div");
- writer.attribute("id", containerName);
- writer.attribute("name", containerName);
- writer.attribute("style", "width:100%");
- }
- }
package com.lihj.components.grid;
import org.apache.tapestry.*;
import org.apache.hivemind.Messages;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
/**
* 标题:
* <p/>
* 描述:
* <p/>
* 日期: 2008-12-16
* 时间: 15:40:12
*
* @author lihj
* @version $Id: GridPanel.java,v 1.12 2009/01/08 03:25:20 lihj Exp $
*/
public abstract class GridPanel extends AbstractComponent {
public abstract IScript getScript();
private static final String SYM_GRIDID = "gridId";
private static final String SYM_CONTAINERNAME = "containerName";
private static final String SYM_URL = "url";
private static final String SYM_TITLE = "title";
private static final String SYM_READER = "reader";
private static final String SYM_HEADER = "header";
private static final String SYM_PAGESIZE = "pageSize";
private static final String SYM_AUTOHEIGHT = "autoHeight";
private static final String SYM_HEIGHT = "height";
public abstract String getGridId();
public abstract String getUrl();
public abstract String getTitle();
public abstract String getReader();
public abstract String getHeader();
public abstract String getPageSize();
public abstract String getAutoHeight();
public abstract String getHeight();
protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) {
PageRenderSupport pageRenderSupport = TapestryUtils.getPageRenderSupport(cycle, this);
Messages messages = getMessages();
// GridPanel显示容器的名称和id,都等于"div_"加上gridId
String containerName = "div_" + getGridId();
String autoHeight = getAutoHeight();
if (autoHeight == null) {
autoHeight = messages.getMessage("autoHeight.default");
}
String height = getHeight();
String reader = getReader();
//通过正则表达式替换换行和空格 start
Pattern p = Pattern.compile("/r/n|//s");
Matcher m = p.matcher(reader);
reader = m.replaceAll("");
//通过正则表达式替换换行和空格 end
String pageSize = getPageSize();
if(pageSize==null){
pageSize= messages.getMessage("PageSize.default");
}
String[] headerArray = reader.split(",");
StringBuilder sb = new StringBuilder("[");
for (String s : headerArray) {
sb.append("{");
if (s.contains(":")) {
String[] ss = s.split(":");
sb.append("name:'" + ss[0] + "',");
sb.append("type:'" + ss[1] + "'");
} else {
sb.append("name:'" + s + "'");
}
sb.append("},");
}
sb.deleteCharAt(sb.toString().length() - 1);
sb.append("]");
Map symbols = new HashMap();
symbols.put(SYM_GRIDID, getGridId());
symbols.put(SYM_CONTAINERNAME, containerName);
symbols.put(SYM_URL, getUrl());
symbols.put(SYM_TITLE, getTitle());
symbols.put(SYM_READER, sb.toString());
symbols.put(SYM_HEADER, getHeader());
symbols.put(SYM_PAGESIZE, pageSize);
symbols.put(SYM_AUTOHEIGHT, autoHeight);
symbols.put(SYM_HEIGHT, getHeight());
getScript().execute(cycle, pageRenderSupport, symbols);
writer.beginEmpty("div");//生成div,作为GridPanel显示的容器
writer.attribute("id", containerName);
writer.attribute("name", containerName);
writer.attribute("style", "width:100%");
}
}
GridPanel.jwc
- <?xml version="1.0" encoding="GB2312"?>
- <!--
- GridPanel
- 作者:lihj
- 创建日期:2008年12月17日14:52:29
-
- 组件说明:封装Ext的GridPanel,作为Tapestry的组件。
- -->
-
-
- <!DOCTYPE component-specification
- PUBLIC "-//Apache Software Foundation//Tapestry Specification 4.0//EN"
- "http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd">
-
- <component-specification class="com.topera.unilib.components.grid.GridPanel"
- allow-body="no" allow-informal-parameters="yes">
-
-
- <parameter name="url" required="yes"/>
-
- <parameter name="gridId" required="yes"/>
-
- <parameter name="reader" required="yes"/>
-
- <parameter name="header" required="yes"/>
-
- <parameter name="title"/>
-
- <parameter name="pageSize"/>
-
- <parameter name="autoHeight"/>
-
- <parameter name="height"/>
-
-
- <inject property="script" type="script" object="GridPanel.script"/>
-
- </component-specification>
<?xml version="1.0" encoding="GB2312"?>
<!--
GridPanel
作者:lihj
创建日期:2008年12月17日14:52:29
组件说明:封装Ext的GridPanel,作为Tapestry的组件。
-->
<!-- $Id: GridPanel.jwc,v 1.9 2009/01/08 03:25:20 lihj Exp $ -->
<!DOCTYPE component-specification
PUBLIC "-//Apache Software Foundation//Tapestry Specification 4.0//EN"
"http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd">
<component-specification class="com.topera.unilib.components.grid.GridPanel"
allow-body="no" allow-informal-parameters="yes">
<!--获取数据的url-->
<parameter name="url" required="yes"/>
<!--容器名称,也就是组件所生成GridPanel的id-->
<parameter name="gridId" required="yes"/>
<!--定义grid的reader-->
<parameter name="reader" required="yes"/>
<!--定义grid的hender-->
<parameter name="header" required="yes"/>
<!--组件所生成的ridPanel的title-->
<parameter name="title"/>
<!--定义GridPanel翻页的pagesize-->
<parameter name="pageSize"/>
<!--自动高度,默认值为true-->
<parameter name="autoHeight"/>
<!--高度,无值则autoHeight自动生效-->
<parameter name="height"/>
<!--定义GridPanel的javascript代码-->
<inject property="script" type="script" object="GridPanel.script"/>
</component-specification>
GridPanel.script
- <?xml version="1.0"?>
- <!DOCTYPE script PUBLIC
- "-//Apache Software Foundation//Tapestry Script Specification 3.0//EN"
- "http://jakarta.apache.org/tapestry/dtd/Script_3_0.dtd">
- <script>
- <input-symbol key="gridId" required="yes" />
- <input-symbol key="containerName" required="yes" />
- <input-symbol key="url" required="yes" />
- <input-symbol key="reader" required="yes" />
- <input-symbol key="header" required="yes" />
- <input-symbol key="title" />
- <input-symbol key="pageSize" />
- <input-symbol key="autoHeight" />
- <input-symbol key="height" />
-
- <body>
- var reader_${gridId};
- var store_${gridId};
- var grid_${gridId};
- var bbar_${gridId};
- var sm_${gridId};
- var cm_${gridId};
- Ext.onReady(function() {
- sm_${gridId} = new Ext.grid.CheckboxSelectionModel();
- cm_${gridId} = new Ext.grid.ColumnModel([
- new Ext.grid.RowNumberer(),
- sm_${gridId},
- ${header}
- ]);
-
- reader_${gridId} = new Ext.data.JsonReader(
- {
- id:"id",
- root:"rows",
- totalProperty:"total"
- },
- ${reader});
-
- store_${gridId} = new Ext.data.Store({
- proxy:new Ext.data.HttpProxy({url:${url}}),
- remoteSort:true,
- reader:reader_${gridId}
- });
-
- bbar_${gridId} = new Ext.PagingToolbar({
- pageSize:${pageSize},
- store:store_${gridId},
- displayInfo:true,
- displayMsg: '显示第 {0} 条到 {1} 条记录,一共 {2} 条',
- beforePageText:'第',
- afterPageText:'页 共{0}页',
- firstText:'首页',
- prevText:'上一页',
- nextText:'下一页',
- lastText:'尾页',
- refreshText:'刷新',
- emptyMsg:"没有记录",
- plugins: [new Ext.ux.PageSizePlugin()]
- });
-
- var gridPanel_${containerName} = Ext.get("${containerName}");
- grid_${gridId} = new Ext.grid.GridPanel({
- id:'${gridId}',
- border:true,
- layout: 'fit',
- title:'${title}',
- width:gridPanel_${containerName}.getComputedWidth(),
- <if expression="height == null">
- autoHeight:${autoHeight},
- </if>
- <if-not expression="height == null">
- height:${height},
- </if-not>
- ds:store_${gridId},
- cm: cm_${gridId},
- sm:sm_${gridId},
- bbar:bbar_${gridId},
- viewConfig: {
- sortAscText:'升序',
- sortDescText:'降序',
- columnsText:'显示列',
- forceFit:true
- }
- });
-
- grid_${gridId}.render(gridPanel_${containerName});
- window.onresize = function() {
- grid_${gridId}.setWidth(gridPanel_${containerName}.getComputedWidth());
- }
- store_${gridId}.load({params:{start:0,limit:${pageSize}}});
- });
-
- function confirmSelection(yes_msg,no_msg,func) {
- var c = grid_${gridId}.getSelections();
- if (c.length > 0)
- Ext.MessageBox.confirm('消息', yes_msg, func);
- else
- Ext.MessageBox.show({
- title: '警告',
- msg: no_msg,
- buttons: Ext.MessageBox.OK,
- icon: Ext.MessageBox.WARNING
- });
- }
-
- function reloadGrid_${gridId}(){
- store_${gridId}.reload();
- }
- </body>
-
- </script>
<?xml version="1.0"?>
<!DOCTYPE script PUBLIC
"-//Apache Software Foundation//Tapestry Script Specification 3.0//EN"
"http://jakarta.apache.org/tapestry/dtd/Script_3_0.dtd">
<script>
<input-symbol key="gridId" required="yes" />
<input-symbol key="containerName" required="yes" />
<input-symbol key="url" required="yes" />
<input-symbol key="reader" required="yes" />
<input-symbol key="header" required="yes" />
<input-symbol key="title" />
<input-symbol key="pageSize" />
<input-symbol key="autoHeight" />
<input-symbol key="height" />
<body>
var reader_${gridId};
var store_${gridId};
var grid_${gridId};
var bbar_${gridId};
var sm_${gridId};
var cm_${gridId};
Ext.onReady(function() {
sm_${gridId} = new Ext.grid.CheckboxSelectionModel();
cm_${gridId} = new Ext.grid.ColumnModel([
new Ext.grid.RowNumberer(),
sm_${gridId},
${header}
]);
reader_${gridId} = new Ext.data.JsonReader(
{
id:"id",
root:"rows",
totalProperty:"total"
},
${reader});
store_${gridId} = new Ext.data.Store({
proxy:new Ext.data.HttpProxy({url:${url}}),
remoteSort:true,
reader:reader_${gridId}
});
bbar_${gridId} = new Ext.PagingToolbar({
pageSize:${pageSize},
store:store_${gridId},
displayInfo:true,
displayMsg: '显示第 {0} 条到 {1} 条记录,一共 {2} 条',
beforePageText:'第',
afterPageText:'页 共{0}页',
firstText:'首页',
prevText:'上一页',
nextText:'下一页',
lastText:'尾页',
refreshText:'刷新',
emptyMsg:"没有记录",
plugins: [new Ext.ux.PageSizePlugin()]
});
var gridPanel_${containerName} = Ext.get("${containerName}");
grid_${gridId} = new Ext.grid.GridPanel({
id:'${gridId}',
border:true,
layout: 'fit',
title:'${title}',
width:gridPanel_${containerName}.getComputedWidth(),
<if expression="height == null">
autoHeight:${autoHeight},
</if>
<if-not expression="height == null">
height:${height},
</if-not>
ds:store_${gridId},
cm: cm_${gridId},
sm:sm_${gridId},
bbar:bbar_${gridId},
viewConfig: {
sortAscText:'升序',
sortDescText:'降序',
columnsText:'显示列',
forceFit:true
}
});
grid_${gridId}.render(gridPanel_${containerName});
window.onresize = function() {
grid_${gridId}.setWidth(gridPanel_${containerName}.getComputedWidth());
}
store_${gridId}.load({params:{start:0,limit:${pageSize}}});
});
function confirmSelection(yes_msg,no_msg,func) {
var c = grid_${gridId}.getSelections();
if (c.length > 0)
Ext.MessageBox.confirm('消息', yes_msg, func);
else
Ext.MessageBox.show({
title: '警告',
msg: no_msg,
buttons: Ext.MessageBox.OK,
icon: Ext.MessageBox.WARNING
});
}
function reloadGrid_${gridId}(){
store_${gridId}.reload();
}
</body>
</script>
GridPanel.properties
- PageSize.default=20
- autoHeight.default=true