Subversion Repositories Applications.papyrus

/*
        Copyright (c) 2004-2006, The Dojo Foundation
        All Rights Reserved.

        Licensed under the Academic Free License version 2.1 or above OR the
        modified BSD license. For more information on Dojo licensing, see:

                http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.widget.TreeCommon");
dojo.require("dojo.widget.*");
dojo.declare("dojo.widget.TreeCommon", null, {listenTreeEvents:[], listenedTrees:{}, listenNodeFilter:null, listenTree:function (tree) {
        var _this = this;
        if (this.listenedTrees[tree.widgetId]) {
                return;
        }
        dojo.lang.forEach(this.listenTreeEvents, function (event) {
                var eventHandler = "on" + event.charAt(0).toUpperCase() + event.substr(1);
                dojo.event.topic.subscribe(tree.eventNames[event], _this, eventHandler);
        });
        var filter;
        if (this.listenNodeFilter) {
                this.processDescendants(tree, this.listenNodeFilter, this.listenNode, true);
        }
        this.listenedTrees[tree.widgetId] = true;
}, listenNode:function () {
}, unlistenNode:function () {
}, unlistenTree:function (tree, nodeFilter) {
        var _this = this;
        if (!this.listenedTrees[tree.widgetId]) {
                return;
        }
        dojo.lang.forEach(this.listenTreeEvents, function (event) {
                var eventHandler = "on" + event.charAt(0).toUpperCase() + event.substr(1);
                dojo.event.topic.unsubscribe(tree.eventNames[event], _this, eventHandler);
        });
        if (this.listenNodeFilter) {
                this.processDescendants(tree, this.listenNodeFilter, this.unlistenNode, true);
        }
        delete this.listenedTrees[tree.widgetId];
}, checkPathCondition:function (domElement, condition) {
        while (domElement && !domElement.widgetId) {
                if (condition.call(null, domElement)) {
                        return true;
                }
                domElement = domElement.parentNode;
        }
        return false;
}, domElement2TreeNode:function (domElement) {
        while (domElement && !domElement.widgetId) {
                domElement = domElement.parentNode;
        }
        if (!domElement) {
                return null;
        }
        var widget = dojo.widget.byId(domElement.widgetId);
        if (!widget.isTreeNode) {
                return null;
        }
        return widget;
}, processDescendants:function (elem, filter, func, skipFirst) {
        var _this = this;
        if (!skipFirst) {
                if (!filter.call(_this, elem)) {
                        return;
                }
                func.call(_this, elem);
        }
        var stack = [elem];
        while (elem = stack.pop()) {
                dojo.lang.forEach(elem.children, function (elem) {
                        if (filter.call(_this, elem)) {
                                func.call(_this, elem);
                                stack.push(elem);
                        }
                });
        }
}});