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/*
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: MergeModels.js 3881 2008-02-27 15:41:07Z gjvoosten $
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*/
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// Ensure this object's dependancies are loaded.
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mapbuilder.loadScript(baseDir+"/tool/ToolBase.js");
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/**
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* Model that allows to merge multiple models into one. The first model
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* determines the root node, other models are appended within the same
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* root node.
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* @constructor
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* @base ToolBase
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* @author Andreas Hocevar andreas.hocevarATgmail.com
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* @param modelNode The model's XML object node from the configuration document
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* @param model model this tool belongs to.
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*/
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function MergeModels(toolNode, model) {
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// Inherit the ModelBase functions and parameters
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ToolBase.apply(this, new Array(toolNode, model));
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this.template = null;
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this.init = function(objRef) {
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objRef.model.mergeModels = new Array();
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var models = toolNode.selectSingleNode('mb:merges');
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if (models) {
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var model = models.childNodes;
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for (var i = 0; i < model.length; i++) {
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if (model[i].firstChild) {
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objRef.addModel(objRef, config.objects[getNodeValue(model[i])]);
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}
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}
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}
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}
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// it is important to be registered before other tools that
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// check for model.mergeModels
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model.addListener('init', this.init, this);
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this.getTemplate = function(objRef) {
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objRef.template = objRef.model.doc ? objRef.model.doc.cloneNode(true) : null;
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if (objRef.template) {
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objRef.model.removeListener('loadModel', objRef.getTemplate, objRef);
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objRef.buildModel(objRef);
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}
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}
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model.addListener('loadModel', this.getTemplate, this);
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this.addModel = function(objRef, model) {
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objRef.model.mergeModels.push(model);
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if (model.doc) {
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objRef.mergeModel(objRef, model.doc);
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}
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model.addListener('refresh', objRef.buildModel, objRef);
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}
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this.mergeModel = function(objRef, modelToMerge) {
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var docToMerge = modelToMerge.doc ? modelToMerge.doc.cloneNode(true) : null;
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var nodes = docToMerge ? docToMerge.selectNodes('//*[@fid]') : null;
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if (!nodes) return;
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var node;
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for (var i=0; i<nodes.length; i++) {
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node = nodes[i];
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if (node.nodeName) {
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node.setAttribute('sourceModel', modelToMerge.id);
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}
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}
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Sarissa.copyChildNodes(docToMerge.documentElement, objRef.model.doc.documentElement, true);
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}
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this.buildModel = function(objRef) {
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if (!objRef.template) return;
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objRef.model.callListeners('newModel');
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objRef.model.doc = objRef.template.cloneNode(true);
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for (var i=0; i<objRef.model.mergeModels.length; i++) {
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objRef.mergeModel(objRef, objRef.model.mergeModels[i]);
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}
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objRef.model.callListeners('loadModel');
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}
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}
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