ThemeChanger在GWT-Ext中 [英] ThemeChanger in GWT-Ext
本文介绍了ThemeChanger在GWT-Ext中的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我使用GWT 2.0，GWT-Ext 1.5& Java 1.6和Mozilla 3.6.x。
我试图根据这个链接。但我无法实现它。任何人都可以看我的代码&告诉我我缺少什么或做错了什么？
Test.html
<！doctype html>
< html>
< head>
< meta http-equiv =content-typecontent =text / html; charset = UTF-8>
< link type =text / css =stylesheethref =ThemeTest.css>
< link id =theme =stylesheettype =text / csshref =/ public / resources / themes / green / css / xtheme-green.css/>
< link id =theme =stylesheettype =text / csshref =/ public / resources / themes / red / css / xtheme-red.css/>
< link id =theme =stylesheettype =text / csshref =/ public / resources / themes / gray / css / xtheme-gray.css/>
< link id =theme =stylesheettype =text / csshref =/>
< title> Web应用程序项目< / title>
< script type =text / javascriptlanguage =javascriptsrc =themetest / themetest.nocache.js>< / script>
< / head>
< body>
< iframe src =javascript：''id =__ gwt_historyFrametabIndex =' - 1'style =position：absolute; width：0; height：0; border：0> ;< / iframe中>
< noscript>
< div style =width：22em; position：absolute; left：50％; margin-left：-11em; color：red; background-color：white; border：1px solid red; padding：4px; font-family：sans-serif>
您的网络浏览器必须启用JavaScript
才能正确显示此应用程序。
< / div>
< / noscript>
< / body>
< / html>
Test.gwt.xml
<？xml version =1.0encoding =UTF-8？>
< module rename-to ='test'>
<继承了name ='com.google.gwt.user.User'/>
<继承名称='com.gwtext.GwtExt'/>
< inherits name ='com.google.gwt.user.theme.standard.Standard'/>
< stylesheet src =resources / css / ext-all.css/>
< stylesheet src =resources / css / style.css/>
< script src =adapter / ext / ext-base.js/>
< script src =ext-all.js/>
< entry-point class ='com.test.client.ThemeTest'/>
< source path ='client'/>
< source path ='shared'/>
< / module>
EntryPointClass：ThemeTest.java
@Override
public void onModuleLoad（）{
FormPanel formPanel = new FormPanel（）;
formPanel.setTitle（Form）;
TextField nameField = new TextField（Name）;
TextField descField = new TextField（Desc）;
formPanel.add（nameField）;
formPanel.add（descField）;
formPanel.add（new ThemeChanger（））;
RootPanel.get（）。add（formPanel）;
}
ThemeChanger.java
public class ThemeChanger extends ComboBox {
$ b $ public ThemeChanger（）{
store Store = new SimpleStore（new String [] {theme，label}，new Object [] [] {
new Object [] {/ public / resources / themes / green / css / xtheme-green.css ，Green}，
new Object [] {，Aero Glass}，
new Object [] {/ public / resources / themes / red / css / xtheme-red.css ，Red}，
new Object [] {/ public / resources / themes / gray / css / xtheme-gray.css，Gray}，
}）;
store.load（）;
setFieldLabel（选择主题）;
setEditable（false）;
setStore（store）;
setDisplayField（label）;
setForceSelection（true）;
setTriggerAction（ComboBox.ALL）;
setValue（Gray）;
setFieldLabel（Switch theme）;
addListener（new ComboBoxListenerAdapter（）{
public void onSelect（ComboBox comboBox，Record record，int index）{
try {
String theme = record.getAsString（theme） ;
CSS.swapStyleSheet（theme，theme）;
} catch（Exception e）{
e.printStackTrace（）;
}
}
}）;
setWidth（100）;
$ / code $ / pre
解决方案检查您的主题位置。
您可以下载gxt-2.2.1.zip。
在您的电脑上解压。将会有一个名为 resources 的目录，其中包含主题
，您需要在您的项目位置复制该文件。
我通过下面的示例值检查了你的代码
new Object [] {/ test / resources / themes / slate / css / xtheme-slate.css，Slate}，
new Object [] {/ test / resources / themes / access / css / xtheme-access.css，Access}，
在 ThemeChanger 上面给出主题的类.jar
有效。
I'm using GWT 2.0, GWT-Ext 1.5 & Java 1.6 with Mozilla 3.6.x.
I'm trying to implement ThemeChanger module as per this link. But I'm not able to achieve it. Can anyone look at my code & tell me what am I missing or doing wrong?
Test.html
<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link type="text/css" rel="stylesheet" href="ThemeTest.css">
<link id="theme" rel="stylesheet" type="text/css" href="/public/resources/themes/green/css/xtheme-green.css"/>
<link id="theme" rel="stylesheet" type="text/css" href="/public/resources/themes/red/css/xtheme-red.css"/>
<link id="theme" rel="stylesheet" type="text/css" href="/public/resources/themes/gray/css/xtheme-gray.css"/>
<link id="theme" rel="stylesheet" type="text/css" href=""/>
<title>Web Application Project</title>
<script type="text/javascript" language="javascript" src="themetest/themetest.nocache.js"></script>
</head>
<body>
<iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1' style="position:absolute;width:0;height:0;border:0"></iframe>
<noscript>
<div style="width: 22em; position: absolute; left: 50%; margin-left: -11em; color: red; background-color: white; border: 1px solid red; padding: 4px; font-family: sans-serif">
Your web browser must have JavaScript enabled
in order for this application to display correctly.
</div>
</noscript>
</body>
</html>
Test.gwt.xml
<?xml version="1.0" encoding="UTF-8"?>
<module rename-to='test'>
<inherits name='com.google.gwt.user.User'/>
<inherits name='com.gwtext.GwtExt' />
<inherits name='com.google.gwt.user.theme.standard.Standard'/>
<stylesheet src="resources/css/ext-all.css" />
<stylesheet src="resources/css/style.css" />
<script src="adapter/ext/ext-base.js" />
<script src="ext-all.js" />
<entry-point class='com.test.client.ThemeTest'/>
<source path='client'/>
<source path='shared'/>
</module>
EntryPointClass: ThemeTest.java
@Override
public void onModuleLoad() {
FormPanel formPanel = new FormPanel();
formPanel.setTitle("Form");
TextField nameField = new TextField("Name");
TextField descField = new TextField("Desc");
formPanel.add(nameField);
formPanel.add(descField);
formPanel.add(new ThemeChanger());
RootPanel.get().add(formPanel);
}
ThemeChanger.java
public class ThemeChanger extends ComboBox {
public ThemeChanger() {
final Store store = new SimpleStore(new String[]{"theme", "label"}, new Object[][]{
new Object[]{"/public/resources/themes/green/css/xtheme-green.css", "Green"},
new Object[]{"", "Aero Glass"},
new Object[]{"/public/resources/themes/red/css/xtheme-red.css", "Red"},
new Object[]{"/public/resources/themes/gray/css/xtheme-gray.css", "Gray"},
});
store.load();
setFieldLabel("Select Theme");
setEditable(false);
setStore(store);
setDisplayField("label");
setForceSelection(true);
setTriggerAction(ComboBox.ALL);
setValue("Gray");
setFieldLabel("Switch theme");
addListener(new ComboBoxListenerAdapter() {
public void onSelect(ComboBox comboBox, Record record, int index) {
try {
String theme = record.getAsString("theme");
CSS.swapStyleSheet("theme", theme);
} catch (Exception e) {
e.printStackTrace();
}
}
});
setWidth(100);
}
}
解决方案 Check your locations of themes.
You can download gxt-2.2.1.zip.
Extract it on your computer. there will be a directory named resources containing themes
which you need to copy at your project location.
I have checked your code by palcing below example values
new Object[]{"/test/resources/themes/slate/css/xtheme-slate.css", "Slate"},
new Object[]{"/test/resources/themes/access/css/xtheme-access.css", "Access"},
In ThemeChanger classs with themes given in above .jar
It worked.
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