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/*
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Author: Mike Adair mike.adairATccrs.nrcan.gc.ca
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: AoiForm.js 3879 2008-02-27 14:20:29Z gjvoosten $
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*/
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// Ensure this object's dependancies are loaded.
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mapbuilder.loadScript(baseDir+"/widget/WidgetBaseXSL.js");
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/**
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* Widget to display the AOI box coordinates in a form.
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*
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* @constructor
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* @base WidgetBaseXSL
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* @param widgetNode This widget's object node from the configuration document.
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* @param model The model that this widget is a view of.
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*/
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function AoiForm(widgetNode, model) {
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WidgetBaseXSL.apply(this,new Array(widgetNode, model));
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/**
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* Output the AOI coordinates to the associated form input elements. This
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* method is registered as an AOI listener on the context doc.
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* @param objRef Pointer to this AoiForm object.
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* @param targetNode The node for the enclosing HTML tag for this widget.
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*/
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this.displayAoiCoords = function(objRef, targetNode) {
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var aoiForm = document.getElementById(objRef.formName);
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var aoi = objRef.model.getParam("aoi");
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if (aoi && aoiForm) {
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aoiForm.westCoord.value = aoi[0][0];
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aoiForm.northCoord.value = aoi[0][1];
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aoiForm.eastCoord.value = aoi[1][0];
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aoiForm.southCoord.value = aoi[1][1];
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}
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}
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this.model.addListener('aoi', this.displayAoiCoords, this);
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/**
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* Handles user input from the form element. This is an onblur handler for
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* the input elements.
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*/
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this.setAoi = function() {
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var aoi = this.model.getParam("aoi");
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if (aoi) {
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var ul = aoi[0];
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var lr = aoi[1];
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switch(this.name) {
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case 'westCoord':
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ul[0] = this.value;
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break;
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case 'northCoord':
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ul[1] = this.value;
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break;
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case 'eastCoord':
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lr[0] = this.value;
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break;
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case 'southCoord':
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lr[1] = this.value;
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break;
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}
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this.model.setParam("aoi",new Array(ul,lr) );
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}
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}
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/**
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* Refreshes the form onblur handlers when this widget is painted.
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* @param objRef Pointer to this AoiForm object.
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*/
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this.postPaint = function(objRef) {
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var aoiForm = document.getElementById(objRef.formName);
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aoiForm.westCoord.onblur = objRef.setAoi;
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aoiForm.northCoord.onblur = objRef.setAoi;
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aoiForm.eastCoord.onblur = objRef.setAoi;
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aoiForm.southCoord.onblur = objRef.setAoi;
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aoiForm.westCoord.model = objRef.model;
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aoiForm.northCoord.model = objRef.model;
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aoiForm.eastCoord.model = objRef.model;
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aoiForm.southCoord.model = objRef.model;
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}
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//set some properties for the form output
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//allow it to have a different form name
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this.formName = this.getProperty("mb:formName", "AoiForm_" + mbIds.getId());
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this.stylesheet.setParameter("formName", this.formName);
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}
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