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Struts example source code file (TreeSelectorV3.js)

This example Struts source code file (TreeSelectorV3.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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date, date

The Struts TreeSelectorV3.js source code

/*
	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.TreeSelectorV3");
dojo.require("dojo.widget.HtmlWidget");
dojo.require("dojo.widget.TreeCommon");
dojo.widget.defineWidget("dojo.widget.TreeSelectorV3", [dojo.widget.HtmlWidget, dojo.widget.TreeCommon], function () {
	this.eventNames = {};
	this.listenedTrees = {};
	this.selectedNodes = [];
	this.lastClicked = {};
}, {listenTreeEvents:["afterTreeCreate", "afterCollapse", "afterChangeTree", "afterDetach", "beforeTreeDestroy"], listenNodeFilter:function (elem) {
	return elem instanceof dojo.widget.Widget;
}, allowedMulti:true, dblselectTimeout:300, eventNamesDefault:{select:"select", deselect:"deselect", dblselect:"dblselect"}, onAfterTreeCreate:function (message) {
	var tree = message.source;
	dojo.event.browser.addListener(tree.domNode, "onclick", dojo.lang.hitch(this, this.onTreeClick));
	if (dojo.render.html.ie) {
		dojo.event.browser.addListener(tree.domNode, "ondblclick", dojo.lang.hitch(this, this.onTreeDblClick));
	}
	dojo.event.browser.addListener(tree.domNode, "onKey", dojo.lang.hitch(this, this.onKey));
}, onKey:function (e) {
	if (!e.key || e.ctrkKey || e.altKey) {
		return;
	}
	switch (e.key) {
	  case e.KEY_ENTER:
		var node = this.domElement2TreeNode(e.target);
		if (node) {
			this.processNode(node, e);
		}
	}
}, onAfterChangeTree:function (message) {
	if (!message.oldTree && message.node.selected) {
		this.select(message.node);
	}
	if (!message.newTree || !this.listenedTrees[message.newTree.widgetId]) {
		if (this.selectedNode && message.node.children) {
			this.deselectIfAncestorMatch(message.node);
		}
	}
}, initialize:function (args) {
	for (var name in this.eventNamesDefault) {
		if (dojo.lang.isUndefined(this.eventNames[name])) {
			this.eventNames[name] = this.widgetId + "/" + this.eventNamesDefault[name];
		}
	}
}, onBeforeTreeDestroy:function (message) {
	this.unlistenTree(message.source);
}, onAfterCollapse:function (message) {
	this.deselectIfAncestorMatch(message.source);
}, onTreeDblClick:function (event) {
	this.onTreeClick(event);
}, checkSpecialEvent:function (event) {
	return event.shiftKey || event.ctrlKey;
}, onTreeClick:function (event) {
	var node = this.domElement2TreeNode(event.target);
	if (!node) {
		return;
	}
	var checkLabelClick = function (domElement) {
		return domElement === node.labelNode;
	};
	if (this.checkPathCondition(event.target, checkLabelClick)) {
		this.processNode(node, event);
	}
}, processNode:function (node, event) {
	if (node.actionIsDisabled(node.actions.SELECT)) {
		return;
	}
	if (dojo.lang.inArray(this.selectedNodes, node)) {
		if (this.checkSpecialEvent(event)) {
			this.deselect(node);
			return;
		}
		var _this = this;
		var i = 0;
		var selectedNode;
		while (this.selectedNodes.length > i) {
			selectedNode = this.selectedNodes[i];
			if (selectedNode !== node) {
				this.deselect(selectedNode);
				continue;
			}
			i++;
		}
		var wasJustClicked = this.checkRecentClick(node);
		eventName = wasJustClicked ? this.eventNames.dblselect : this.eventNames.select;
		if (wasJustClicked) {
			eventName = this.eventNames.dblselect;
			this.forgetLastClicked();
		} else {
			eventName = this.eventNames.select;
			this.setLastClicked(node);
		}
		dojo.event.topic.publish(eventName, {node:node});
		return;
	}
	this.deselectIfNoMulti(event);
	this.setLastClicked(node);
	this.select(node);
}, forgetLastClicked:function () {
	this.lastClicked = {};
}, setLastClicked:function (node) {
	this.lastClicked.date = new Date();
	this.lastClicked.node = node;
}, checkRecentClick:function (node) {
	var diff = new Date() - this.lastClicked.date;
	if (this.lastClicked.node && diff < this.dblselectTimeout) {
		return true;
	} else {
		return false;
	}
}, deselectIfNoMulti:function (event) {
	if (!this.checkSpecialEvent(event) || !this.allowedMulti) {
		this.deselectAll();
	}
}, deselectIfAncestorMatch:function (ancestor) {
	var _this = this;
	dojo.lang.forEach(this.selectedNodes, function (node) {
		var selectedNode = node;
		node = node.parent;
		while (node && node.isTreeNode) {
			if (node === ancestor) {
				_this.deselect(selectedNode);
				return;
			}
			node = node.parent;
		}
	});
}, onAfterDetach:function (message) {
	this.deselectIfAncestorMatch(message.child);
}, select:function (node) {
	var index = dojo.lang.find(this.selectedNodes, node, true);
	if (index >= 0) {
		return;
	}
	this.selectedNodes.push(node);
	dojo.event.topic.publish(this.eventNames.select, {node:node});
}, deselect:function (node) {
	var index = dojo.lang.find(this.selectedNodes, node, true);
	if (index < 0) {
		return;
	}
	this.selectedNodes.splice(index, 1);
	dojo.event.topic.publish(this.eventNames.deselect, {node:node});
}, deselectAll:function () {
	while (this.selectedNodes.length) {
		this.deselect(this.selectedNodes[0]);
	}
}});

Other Struts examples (source code examples)

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