When you want to compile your GWT module for only specific browser, you can change UserAgent.gwt.xml inside gwt-user.jar in package com.google.gwt.user.
Find this text and change it as you wish:
<define-property name="user.agent" values="ie6,gecko,gecko1_8,safari,opera">
I want to compile for only IE , then I change it into
GWT spends time to compute permutations : create javascript file per browser/locale. With this kind of application, GWT produces 50 permutations :
1) Force a single browser
You can add the following set-property in ModuleName.gwt.xml
<!-- User Agent -->
<set-property name="user.agent" value="xxxx" />
where value = "ie6/opera/gecko1_8/safari/gecko"
2) Use only one locale
By default, GWT uses "default" locale. So no need to worry about the locale settings.
By doing this you can see the files difference in MODULENAME/html/*.* (If you are using Cypal Studio) MODULENAME/www/*.* (If you are using GWT Designer) before and after added the set-property in ModuleName.gwt.xml
With this two points, GWT really speeds up we can get more space up to 30% to 40% and compilation timewill be almost 40% less.
Compile GWT files more than one browser
If you add user.agent=ie6 the compiled code will work only in IE6.
If you add the following user.agent then your code will work both the browsers (IE6 & Firefox 2/3)
If you add
Find this text and change it as you wish:
<define-property name="user.agent" values="ie6,gecko,gecko1_8,safari,opera">
gecko - Mozilla ,gecko1_8 - FireFox
I want to compile for only IE , then I change it into
<define-property name="user.agent" values="ie6">I want to do this because we limit specification of browser for our application, and by doing this we can get more space up to 40%
GWT spends time to compute permutations : create javascript file per browser/locale. With this kind of application, GWT produces 50 permutations :
- 5 browsers : ie6, opera, gecko1_8, safari, gecko
- 10 locales : default, de_DE, en_UK, fr_FR, hr_HR, hu_HU, it_IT, nl_NL, pl_PL, pt_PT
1) Force a single browser
You can add the following set-property in ModuleName.gwt.xml
<!-- User Agent -->
<set-property name="user.agent" value="xxxx" />
where value = "ie6/opera/gecko1_8/safari/gecko"
Note: Add only one User Agent set-property in your ModuleName.gwt.xml
For example in MODULE com\mymodule\Container.gwt.xml: <module >
<!-- Inherit the core Web Toolkit stuff. -->
<inherits name="com.google.gwt.user.User"/>
<!-- Inherit the GWT-EXT stuff. -->
<inherits name="com.gwtext.GwtExt" />
<!-- Inherit the GWT-EXT User Extension stuff. -->
<inherits name="com.gwtextux.GwtExtUx" />
<inherits name="com.gwtextux.GridSearchPlugin"/>
<!-- User Agent -->
<set-property name="user.agent" value="ie6" />
<!-- Include the core ExtJs files. -->
<stylesheet src="js/ext/resources/css/ext-all.css" />
<script src="js/ext/adapter/ext/ext-base.js" />
<script src="js/ext/ext-all.js" />
<script src="js/pagebus/pagebus.js"/>
</module>
2) Use only one locale
By default, GWT uses "default" locale. So no need to worry about the locale settings.
By doing this you can see the files difference in MODULENAME/html/*.* (If you are using Cypal Studio) MODULENAME/www/*.* (If you are using GWT Designer) before and after added the set-property in ModuleName.gwt.xml
With this two points, GWT really speeds up we can get more space up to 30% to 40% and compilation timewill be almost 40% less.
Compile GWT files more than one browser
If you add user.agent=ie6 the compiled code will work only in IE6.
If you add the following user.agent then your code will work both the browsers (IE6 & Firefox 2/3)
<!– User Agent –>
<set-property name=”user.agent” value=”ie6″/>
<set-property name=”user.agent” value=”gecko1_8″/ >
If you add
<set-property name=”user.agent” value=”ie6,gecko1_8″/>
you will get an error message like below
[ERROR] Invalid property value ‘ie6,gecko1_8′
[ERROR] Failure while parsing XML
ScreenShot
Before “user.agent”
After “user.agent” added
More info
- How to speed up the GWT compiler ? (Part III)
- How to speed up the GWT compiler ? (Part II)
- How to speed up the GWT compiler ? (Part I)
