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POHelp creating a JavaScript mixin in Tapestry5?
 

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  1. POHelp creating a JavaScript mixin in Tapestry5?
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    <p>I am creating a mixin which renders a javascript file when a textfield gains focus.</p> <p>I am new to the idea of mixins in Tapestry, and I am unsure of where to place my original javascript file which i wish to run when the textfield gains focus.</p> <p>The following is an example of my code: The Java mixin class:</p> <pre><code>package asc.mixins; import org.apache.tapestry5.RenderSupport; import org.apache.tapestry5.annotations.AfterRender; import org.apache.tapestry5.annotations.Environmental; import org.apache.tapestry5.annotations.IncludeJavaScriptLibrary; import org.apache.tapestry5.annotations.InjectContainer; import org.apache.tapestry5.corelib.base.AbstractTextField; @IncludeJavaScriptLibrary("js_dasher_mixin.js") public class DasherMixin { @Environmental private RenderSupport renderSupport; @InjectContainer private AbstractTextField field; @AfterRender void addScript() { this.renderSupport.addScript("new JSDasher('%s');", this.field.getClientId()); } } </code></pre> <p>The Javascript mixin file:</p> <pre><code>JSDasher = Class.create({ initialize: function(textField) { this.textField = $(textField); this.textField.observe('focus', this.onFocus.bindAsEventListener(this)); }, onFocus: function(event) { //call my javascript init() function } } </code></pre> <p>part of my javascript file I wish to run when the textfield gains focus:</p> <pre><code>var posX, posY; // Sets up our global variables and dispatches an init request to the server. function init() { posX=0; posY=0; canvas = document.getElementById("canvas"); canvasWidth = canvas.offsetWidth; canvasHeight = canvas.offsetHeight; if (canvas.getContext) { ctx = canvas.getContext("2d"); } canvas.onclick = canvasClicked; canvas.onmousemove = mouseMoved; canvasOffsetX = findPosX(canvas); canvasOffsetY = findPosY(canvas); sessID = -1; sendInitRQ(canvasWidth, canvasHeight); } </code></pre> <p>My javascript file is much larger than above, my question is where should I put my javascript code above?</p> <p>Should it all be contained in the mixin.js file? if so where exactly should it go?</p> <p>Thanks in advance for any help.</p>
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