Hello,
I just stumbled over Norbert Barbosa's Thinlet
add-on that lets you script Thinlets using Beanshell
(bsh) - a Java-like dynamic scripting language.
Norbert writes:
I have extended thinlet to add BSH (beanShell)
scripting inside the XUL document.
I found thinlet very nice, except the requirement to
write all methods required to manage UI logic (like
enabled a button when selecting item on a list) as
handler methods. I want to code only my business logic
as handler methods.
For example, the calculator.xml thinlet looks like:
<panel>
<textfield name="number1" columns="4" />
<label text="+" />
<textfield name="number2" columns="4" />
<button text="=">
<script method="action">
<![CDATA[
System.out.println("action called");
n1 = thinlet.getString(number1, "text");
n2 = thinlet.getString(number2, "text");
try{
i1 = Integer.parseInt(n1);
i2 = Integer.parseInt(n2);
thinlet.setString(result, "text",
Integer.toString(i1+i2));
}catch(Exception e){
thinlet.getToolkit().beep();
}
]]>
</script>
</button>
<textfield name="result" editable="false" />
</panel>
Changes made to the Thinlet class are minor:
* allow the thinlet parser to manage CDATA section
* change the private policy to protected for some
methods
* I've also changed the thinlet method behavior, by
allowing to define String, boolean and integer
parameters, like:
<checkbox init="initFromProperty(this,
[foo.bar.myProperty], [b:false])" ...
And I've created a ScriptableThinlet class that
extends Thinlet and does all the stuff, that is,
register named components as bsh variables, and call
scripts when need. The only limitation is that you
cannot use the 'this' reference inside scripts to
refer to the enclosing component.
Full story @
http://perso.club-internet.fr/sjobic/thinlet
- Gerald
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