95 lines
2.2 KiB
JavaScript
95 lines
2.2 KiB
JavaScript
/*
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Copyright (c) 2004-2006, The Dojo Foundation
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All Rights Reserved.
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Licensed under the Academic Free License version 2.1 or above OR the
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modified BSD license. For more information on Dojo licensing, see:
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http://dojotoolkit.org/community/licensing.shtml
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*/
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/**
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* Additional tree utils
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*
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*/
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dojo.provide("dojo.widget.TreeControllerExtension");
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dojo.widget.TreeControllerExtension = function() { }
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dojo.lang.extend(dojo.widget.TreeControllerExtension, {
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saveExpandedIndices: function(node, field) {
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var obj = {};
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for(var i=0; i<node.children.length; i++) {
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if (node.children[i].isExpanded) {
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var key = dojo.lang.isUndefined(field) ? i : node.children[i][field];
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obj[key] = this.saveExpandedIndices(node.children[i], field);
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}
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}
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return obj;
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},
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restoreExpandedIndices: function(node, savedIndices, field) {
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var _this = this;
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var handler = function(node, savedIndices) {
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this.node = node; //.children[i];
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this.savedIndices = savedIndices; //[i];
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// recursively read next savedIndices level and apply to opened node
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this.process = function() {
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//dojo.debug("Callback applied for "+this.node);
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_this.restoreExpandedIndices(this.node, this.savedIndices, field);
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};
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}
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for(var i=0; i<node.children.length; i++) {
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var child = node.children[i];
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var found = false;
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var key = -1;
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//dojo.debug("Check "+child)
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// process field set case
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if (dojo.lang.isUndefined(field) && savedIndices[i]) {
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found = true;
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key = i;
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}
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// process case when field is not set
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if (field) {
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for(var key in savedIndices) {
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//dojo.debug("Compare "+key+" "+child[field])
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if (key == child[field]) {
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found = true;
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break;
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}
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}
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}
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// if we found anything - expand it
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if (found) {
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//dojo.debug("Found at "+key)
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var h = new handler(child, savedIndices[key]);
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_this.expand(child, false, h, h.process);
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} else if (child.isExpanded) { // not found, so collapse
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//dojo.debug("Collapsing all descendants "+node.children[i])
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dojo.lang.forEach(child.getDescendants(), function(elem) { _this.collapse(elem); });
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//this.collapse(node.children[i]);
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}
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}
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}
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});
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