Ext2.2 教程二:MessageBox例子

Chenyunshi — Wed, 15 Apr 2009 03:54:00 GMT

改写自下载包里自带的例子.

jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<jsp:include page="/jsp/globalConfig.jsp">jsp:include>
<html>
<head>
<title>MessageBox Samplestitle>
<script type="text/javascript" src="js/mbsample.js">script>

<style type="text/css">
    .x-window-dlg .ext-mb-download {
        background:transparent url(images/download.gif) no-repeat top left;
        height:46px;
    }
style>
head>
<body>
<h1>MessageBox 对话框h1>
<p>The example shows how to use the MessageBox class. Some of the buttons have animations, some are normal.p>
<p>The js is not minified so it is readable. See <a href="js/mbsample.js">Message-sample..jsa>.p>

<p>
    <b>Confirmb><br />
    Standard Yes/No dialog.
    <button id="mb1">Showbutton>
p>

<p>
    <b>Promptb><br />
    Standard prompt dialog.
    <button id="mb2">Showbutton>
p>

<p>
    <b>Multi-line Promptb><br />
    A multi-line prompt dialog.
    <button id="mb3">Showbutton>
p>

<p>
    <b>Yes/No/Cancelb><br />
    Standard Yes/No/Cancel dialog.
    <button id="mb4">Showbutton>
p>

<p>
    <b>Progress Dialogb><br />
    Dialog with measured progress bar.
    <button id="mb6">Showbutton>
p>

<p>
    <b>Wait Dialogb><br />
    Dialog with indefinite progress bar and custom icon (will close after 8 sec).
    <button id="mb7">Showbutton>
p>

<p>
    <b>Alertb><br />
    Standard alert message dialog.
    <button id="mb8">Showbutton>
p>

<p>
    <b>Iconsb><br />
    Standard alert with optional icon.
    <select id="icons">
        <option id="error" selected="selected">Erroroption>
        <option id="info">Informationaloption>
        <option id="question">Questionoption>
        <option id="warning">Warningoption>
    select>
    <button id="mb9">Showbutton>
p>
body>
html>

mbsample.js:

/*
* Ext JS Library 2.2.1
* Copyright(c) 2006-2009, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/

Ext.onReady(function(){
    Ext.get('mb1').on('click', function(e){
        Ext.MessageBox.confirm('Confirm', 'Are you sure you want to do that?', showResult);
    });

    Ext.get('mb2').on('click', function(e){
        Ext.MessageBox.prompt('Name', 'Please enter your name:', showResultText);
    });

    Ext.get('mb3').on('click', function(e){
        Ext.MessageBox.show({
           title: 'Address',
           msg: 'Please enter your address:',
           width:300,
           buttons: Ext.MessageBox.OKCANCEL,
           multiline: true,
           fn: showResultText,
           animEl: 'mb3'
       });
    });

    Ext.get('mb4').on('click', function(e){
        Ext.MessageBox.show({
           title:'Save Changes?',
           msg: 'You are closing a tab that has unsaved changes. <br />Would you like to save your changes?',
           buttons: Ext.MessageBox.YESNOCANCEL,
           fn: showResult,
           animEl: 'mb4',
           icon: Ext.MessageBox.QUESTION
       });
    });

    Ext.get('mb6').on('click', function(){
        Ext.MessageBox.show({
           title: 'Please wait',
           msg: 'Loading items',
           progressText: 'Initializing',
           width:300,
           progress:true,
           closable:false,
           animEl: 'mb6'
       });

       // this hideous block creates the bogus progress
       var f = function(v){
            return function(){
                if(v == 12){
                    Ext.MessageBox.hide();
                    Ext.example.msg('Done', 'Your fake items were loaded!');
                }else{
                    var i = v/11;
                    Ext.MessageBox.updateProgress(i, Math.round(100*i)+'% completed');
                }
           };
       };
       for(var i = 1; i < 13; i++){
           setTimeout(f(i), i*500);
       }
    });

    Ext.get('mb7').on('click', function(){
        Ext.MessageBox.show({
           msg: 'Saving your data, please wait',
           progressText: 'Saving',
           width:300,
           wait:true,
           waitConfig: {interval:200},
           icon:'ext-mb-download', //custom class in msg-box.html
           animEl: 'mb7'
       });
        setTimeout(function(){
            //This simulates a long-running operation like a database save or XHR call.
            //In real code, this would be in a callback function.
            Ext.MessageBox.hide();
            //Ext.example.msg('Done', 'Your fake data was saved!');
        }, 8000);
    });

    Ext.get('mb8').on('click', function(){
        Ext.MessageBox.alert('Status', 'Changes saved successfully.', showResult);
    });

    //Add these values dynamically so they aren't hard-coded in the html
    Ext.fly('info').dom.value = Ext.MessageBox.INFO;
    Ext.fly('question').dom.value = Ext.MessageBox.QUESTION;
    Ext.fly('warning').dom.value = Ext.MessageBox.WARNING;
    Ext.fly('error').dom.value = Ext.MessageBox.ERROR;

    Ext.get('mb9').on('click', function(){
        Ext.MessageBox.show({
           title: 'Icon Support',
           msg: 'Here is a message with an icon!',
           buttons: Ext.MessageBox.OK,
           animEl: 'mb9',
           fn: showResult,
           icon: Ext.get('icons').dom.value
       });
    });

    function showResult(btn){
        //Ext.example.msg('Button Click', 'You clicked the {0} button', btn);
    };

    function showResultText(btn, text){
        //Ext.example.msg('Button Click', 'You clicked the {0} button and entered the text "{1}".', btn, text);
    };
});

Chenyunshi 2009-04-15 11:54 发表评论

Ext2.2 教程一:预备走

Chenyunshi — Wed, 15 Apr 2009 02:08:00 GMT

一简介

Ext 是目前最火爆的javascript框架. 原名yui-ext,是yahoo yui的补充, 后来另起炉灶,名字也更改为ExtJs.最新版本是2.2.1,你可以从这里下载:http://extjs.com/products/extjs/download.php?dl=extjs221

YUI和Ext各有优缺点. 论开发的灵活度和性能,YUI更好. 论集成功能之多和界面漂亮,Ext更胜一筹.如果你是一个纯粹的开发人员,美工水平一般,那么用ExtJs来开发网站实在再好不过,你可以借助ExtJs自身类库实现许多很酷很炫的效果.

二起步

和YUI的大气不同,Ext是想在市场上赚点银子的.所以Ext的官方文档/资源相比YUI来说较为缺乏,入门不易.如果想要学习Ext,建议从以下几步着手:

查看Ext例子.下载完Ext后打开下载包,里面的examples目录有许多示范例子,尽自己能力改写这些例子,就能更快掌握Ext
查看api文档.在下载包的docs目录里有api文档可供查看.
借助firebug阅读源码.源码在下载包的source目录里.
安装spket eclipse插件.这样在eclipse里写js时就可以有code assistant功能.在这个视频里你可以看到这个功能是多么的酷:http://www.spket.com/demos/js.html 参考这篇文章进行安装:http://www.blogjava.net/H-bomb/archive/2008/02/02/179051.html
多动手,多总结.

三实例的代码结构

教程的源程序按照jsp的war格式进行组织,目录结构如下:

globalConfig.jsp 的内容:

<%-- Ext config . --%>
<link rel="stylesheet" type="text/css" href="<%=request.getContextPath()%>/js/ext-2.2.1/resources/css/ext-all.css" />
<script type="text/javascript" src="<%=request.getContextPath()%>/js/ext-2.2.1/adapter/ext/ext-base.js">script>
<script type="text/javascript" src="<%=request.getContextPath()%>/js/ext-2.2.1/ext-all.js">script>

Chenyunshi 2009-04-15 10:08 发表评论

IT博客-yunshichen-随笔分类-Ext2

Ext2.2 教程二:MessageBox例子

Ext2.2 教程一:预备走

一 简介

二 起步

三 实例的代码结构

一简介

二起步

三实例的代码结构