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package org.apache.commons.jelly.tags.swing; |
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import java.awt.event.KeyEvent; |
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import java.awt.event.KeyListener; |
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import org.apache.commons.jelly.JellyTagException; |
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import org.apache.commons.jelly.Script; |
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import org.apache.commons.jelly.TagSupport; |
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import org.apache.commons.jelly.XMLOutput; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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public class KeyListenerTag extends TagSupport |
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{ |
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protected static final Log log = LogFactory.getLog(KeyListenerTag.class); |
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protected String var; |
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protected Script pressed; |
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protected Script typed; |
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protected Script released; |
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public KeyListenerTag() |
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{ |
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super(); |
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} |
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public void setVar(String var) |
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{ |
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this.var = class="keyword">var; |
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} |
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public void setPressed(Script pressed) |
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{ |
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this.pressed = pressed; |
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} |
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public void setReleased(Script released) |
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{ |
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this.released = released; |
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} |
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public void setTyped(Script typed) |
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{ |
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this.typed = typed; |
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} |
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public void doTag(final XMLOutput output) throws JellyTagException |
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{ |
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ComponentTag tag = (ComponentTag)findAncestorWithClass(ComponentTag.class); |
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if (tag != null) |
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{ |
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KeyListener listener = new KeyListener() |
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{ |
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public void keyTyped(KeyEvent e) |
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{ |
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invokeScript(output, e, typed); |
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} |
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public void keyPressed(KeyEvent e) |
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{ |
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invokeScript(output, e, pressed); |
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} |
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public void keyReleased(KeyEvent e) |
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{ |
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invokeScript(output, e, released); |
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} |
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}; |
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tag.addKeyListener(listener); |
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} |
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} |
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protected void invokeScript(XMLOutput output, KeyEvent event, Script script) |
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{ |
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if (var != null) |
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{ |
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context.setVariable(var, event); |
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} |
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try |
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{ |
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if (script != null) |
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{ |
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script.run(context, output); |
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} |
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else |
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{ |
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invokeBody(output); |
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} |
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} |
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catch (Exception e) |
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{ |
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log.error("Caught exception processing window event: " + event, e); |
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} |
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} |
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} |