GWT♥HTML5

GWT HTML5
@tan_go238

Friday, September 17, 2010

Agenda


GWT?

Compile
Java JavaScript


ex) ImageResource, Inliner


“Deferred Binding is Google Web Toolkit's answer to
Java reﬂection.”

http://code.google.com/webtoolkit/doc/1.6/FAQ_Client.html#What_is_Deferred_Binding?


http://www.youtube.com/watch?v=nvti32k4xyU

Your Code Download exactly what you Your Code
need in a single, optimized,
can’t-go-wrong chunk
FireFox 1.0.x IE6

en_US en_UK
Single Java
1D04ADDA.cache.html Code Base 15F361B8.cache.html

Your Code Your Code
Then cache it on the client
Safari 2.0.x until the sun explodes Opera 9

fr_FR fr_CA

7EFE4D24.cache.html D415D917.cache.html


private static final PopupImpl impl = GWT.create(PopupImpl.class);

<module>

<replace-with class="com.google.gwt.user.client.ui.impl.PopupImpl">
<when-type-is class="com.google.gwt.user.client.ui.impl.PopupImpl"/>
</replace-with>


<replace-with class="com.google.gwt.user.client.ui.impl.PopupImplMozilla">
<when-type-is class="com.google.gwt.user.client.ui.impl.PopupImpl" />
<any>
<when-property-is name="user.agent" value="gecko"/>
<when-property-is name="user.agent" value="gecko1_8" />
</any>
</replace-with>


<replace-with class="com.google.gwt.user.client.ui.impl.PopupImplIE6">
<when-type-is class="com.google.gwt.user.client.ui.impl.PopupImpl"/>
<when-property-is name="user.agent" value="ie6" />
</replace-with>
</module>

Button b = new Button("Click me", new ClickHandler() {
public void onClick(ClickEvent event) {
GWT.runAsync(new RunAsyncCallback() {
public void onFailure(Throwable caught) {
Window.alert("Code download failed");
}
public void onSuccess() {
Window.alert("Hello, AJAX");
}
});
}
});


Host Page (Module.html)

Selection Script
(module.nocache.html)

Permutation Script
Browser (Strongly-named.cache.html) Server

onload
Module starts running
runAsync Fragments


http://code.google.com/webtoolkit/usingeclipse.html


1. File→New→Web Application Project
2. Project name gwtdemo
3. Use Google Web Toolkit
Use Google App Engine
Finish

※Google App Engine


1.
Run As → Web Application

2. URL http://127.0.0.1:8888/Gwtdemo.html?gwt.codesvr=127.0.0.1:9997

※


1.

2. Entry Point Compile


http://code.google.com/events/io/2010/sessions/gwt-html5.html


Google Web Toolkit

http://code.google.com/webtoolkit/overview.html

Google I/O 2010 Sessions

http://code.google.com/events/io/2010/sessions.html#GWT


GWT♥HTML5

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