alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Struts example source code file (TreeBasicControllerV3.js)

This example Struts source code file (TreeBasicControllerV3.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.

Java - Struts tags/keywords

treelabelfocused, treelabelfocused

The Struts TreeBasicControllerV3.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.TreeBasicControllerV3");
dojo.require("dojo.event.*");
dojo.require("dojo.json");
dojo.require("dojo.io.*");
dojo.require("dojo.widget.TreeCommon");
dojo.require("dojo.widget.TreeNodeV3");
dojo.require("dojo.widget.TreeV3");
dojo.widget.defineWidget("dojo.widget.TreeBasicControllerV3", [dojo.widget.HtmlWidget, dojo.widget.TreeCommon], function () {
	this.listenedTrees = {};
}, {listenTreeEvents:["afterSetFolder", "afterTreeCreate", "beforeTreeDestroy"], listenNodeFilter:function (elem) {
	return elem instanceof dojo.widget.Widget;
}, editor:null, initialize:function (args) {
	if (args.editor) {
		this.editor = dojo.widget.byId(args.editor);
		this.editor.controller = this;
	}
}, getInfo:function (elem) {
	return elem.getInfo();
}, onBeforeTreeDestroy:function (message) {
	this.unlistenTree(message.source);
}, onAfterSetFolder:function (message) {
	if (message.source.expandLevel > 0) {
		this.expandToLevel(message.source, message.source.expandLevel);
	}
	if (message.source.loadLevel > 0) {
		this.loadToLevel(message.source, message.source.loadLevel);
	}
}, _focusNextVisible:function (nodeWidget) {
	if (nodeWidget.isFolder && nodeWidget.isExpanded && nodeWidget.children.length > 0) {
		returnWidget = nodeWidget.children[0];
	} else {
		while (nodeWidget.isTreeNode && nodeWidget.isLastChild()) {
			nodeWidget = nodeWidget.parent;
		}
		if (nodeWidget.isTreeNode) {
			var returnWidget = nodeWidget.parent.children[nodeWidget.getParentIndex() + 1];
		}
	}
	if (returnWidget && returnWidget.isTreeNode) {
		this._focusLabel(returnWidget);
		return returnWidget;
	}
}, _focusPreviousVisible:function (nodeWidget) {
	var returnWidget = nodeWidget;
	if (!nodeWidget.isFirstChild()) {
		var previousSibling = nodeWidget.parent.children[nodeWidget.getParentIndex() - 1];
		nodeWidget = previousSibling;
		while (nodeWidget.isFolder && nodeWidget.isExpanded && nodeWidget.children.length > 0) {
			returnWidget = nodeWidget;
			nodeWidget = nodeWidget.children[nodeWidget.children.length - 1];
		}
	} else {
		nodeWidget = nodeWidget.parent;
	}
	if (nodeWidget && nodeWidget.isTreeNode) {
		returnWidget = nodeWidget;
	}
	if (returnWidget && returnWidget.isTreeNode) {
		this._focusLabel(returnWidget);
		return returnWidget;
	}
}, _focusZoomIn:function (nodeWidget) {
	var returnWidget = nodeWidget;
	if (nodeWidget.isFolder && !nodeWidget.isExpanded) {
		this.expand(nodeWidget);
	} else {
		if (nodeWidget.children.length > 0) {
			nodeWidget = nodeWidget.children[0];
		}
	}
	if (nodeWidget && nodeWidget.isTreeNode) {
		returnWidget = nodeWidget;
	}
	if (returnWidget && returnWidget.isTreeNode) {
		this._focusLabel(returnWidget);
		return returnWidget;
	}
}, _focusZoomOut:function (node) {
	var returnWidget = node;
	if (node.isFolder && node.isExpanded) {
		this.collapse(node);
	} else {
		node = node.parent;
	}
	if (node && node.isTreeNode) {
		returnWidget = node;
	}
	if (returnWidget && returnWidget.isTreeNode) {
		this._focusLabel(returnWidget);
		return returnWidget;
	}
}, onFocusNode:function (e) {
	var node = this.domElement2TreeNode(e.target);
	if (node) {
		node.viewFocus();
		dojo.event.browser.stopEvent(e);
	}
}, onBlurNode:function (e) {
	var node = this.domElement2TreeNode(e.target);
	if (!node) {
		return;
	}
	var labelNode = node.labelNode;
	labelNode.setAttribute("tabIndex", "-1");
	node.viewUnfocus();
	dojo.event.browser.stopEvent(e);
	node.tree.domNode.setAttribute("tabIndex", "0");
}, _focusLabel:function (node) {
	var lastFocused = node.tree.lastFocused;
	var labelNode;
	if (lastFocused && lastFocused.labelNode) {
		labelNode = lastFocused.labelNode;
		dojo.event.disconnect(labelNode, "onblur", this, "onBlurNode");
		labelNode.setAttribute("tabIndex", "-1");
		dojo.html.removeClass(labelNode, "TreeLabelFocused");
	}
	labelNode = node.labelNode;
	labelNode.setAttribute("tabIndex", "0");
	node.tree.lastFocused = node;
	dojo.html.addClass(labelNode, "TreeLabelFocused");
	dojo.event.connectOnce(labelNode, "onblur", this, "onBlurNode");
	dojo.event.connectOnce(labelNode, "onfocus", this, "onFocusNode");
	labelNode.focus();
}, onKey:function (e) {
	if (!e.key || e.ctrkKey || e.altKey) {
		return;
	}
	var nodeWidget = this.domElement2TreeNode(e.target);
	if (!nodeWidget) {
		return;
	}
	var treeWidget = nodeWidget.tree;
	if (treeWidget.lastFocused && treeWidget.lastFocused.labelNode) {
		nodeWidget = treeWidget.lastFocused;
	}
	switch (e.key) {
	  case e.KEY_TAB:
		if (e.shiftKey) {
			treeWidget.domNode.setAttribute("tabIndex", "-1");
		}
		break;
	  case e.KEY_RIGHT_ARROW:
		this._focusZoomIn(nodeWidget);
		dojo.event.browser.stopEvent(e);
		break;
	  case e.KEY_LEFT_ARROW:
		this._focusZoomOut(nodeWidget);
		dojo.event.browser.stopEvent(e);
		break;
	  case e.KEY_UP_ARROW:
		this._focusPreviousVisible(nodeWidget);
		dojo.event.browser.stopEvent(e);
		break;
	  case e.KEY_DOWN_ARROW:
		this._focusNextVisible(nodeWidget);
		dojo.event.browser.stopEvent(e);
		break;
	}
}, onFocusTree:function (e) {
	if (!e.currentTarget) {
		return;
	}
	try {
		var treeWidget = this.getWidgetByNode(e.currentTarget);
		if (!treeWidget || !treeWidget.isTree) {
			return;
		}
		var nodeWidget = this.getWidgetByNode(treeWidget.domNode.firstChild);
		if (nodeWidget && nodeWidget.isTreeNode) {
			if (treeWidget.lastFocused && treeWidget.lastFocused.isTreeNode) {
				nodeWidget = treeWidget.lastFocused;
			}
			this._focusLabel(nodeWidget);
		}
	}
	catch (e) {
	}
}, onAfterTreeCreate:function (message) {
	var tree = message.source;
	dojo.event.browser.addListener(tree.domNode, "onKey", dojo.lang.hitch(this, this.onKey));
	dojo.event.browser.addListener(tree.domNode, "onmousedown", dojo.lang.hitch(this, this.onTreeMouseDown));
	dojo.event.browser.addListener(tree.domNode, "onclick", dojo.lang.hitch(this, this.onTreeClick));
	dojo.event.browser.addListener(tree.domNode, "onfocus", dojo.lang.hitch(this, this.onFocusTree));
	tree.domNode.setAttribute("tabIndex", "0");
	if (tree.expandLevel) {
		this.expandToLevel(tree, tree.expandLevel);
	}
	if (tree.loadLevel) {
		this.loadToLevel(tree, tree.loadLevel);
	}
}, onTreeMouseDown:function (e) {
}, onTreeClick:function (e) {
	var domElement = e.target;
	var node = this.domElement2TreeNode(domElement);
	if (!node || !node.isTreeNode) {
		return;
	}
	var checkExpandClick = function (el) {
		return el === node.expandNode;
	};
	if (this.checkPathCondition(domElement, checkExpandClick)) {
		this.processExpandClick(node);
	}
	this._focusLabel(node);
}, processExpandClick:function (node) {
	if (node.isExpanded) {
		this.collapse(node);
	} else {
		this.expand(node);
	}
}, batchExpandTimeout:20, expandAll:function (nodeOrTree) {
	return this.expandToLevel(nodeOrTree, Number.POSITIVE_INFINITY);
}, collapseAll:function (nodeOrTree) {
	var _this = this;
	var filter = function (elem) {
		return (elem instanceof dojo.widget.Widget) && elem.isFolder && elem.isExpanded;
	};
	if (nodeOrTree.isTreeNode) {
		this.processDescendants(nodeOrTree, filter, this.collapse);
	} else {
		if (nodeOrTree.isTree) {
			dojo.lang.forEach(nodeOrTree.children, function (c) {
				_this.processDescendants(c, filter, _this.collapse);
			});
		}
	}
}, expandToNode:function (node, withSelected) {
	n = withSelected ? node : node.parent;
	s = [];
	while (!n.isExpanded) {
		s.push(n);
		n = n.parent;
	}
	dojo.lang.forEach(s, function (n) {
		n.expand();
	});
}, expandToLevel:function (nodeOrTree, level) {
	dojo.require("dojo.widget.TreeTimeoutIterator");
	var _this = this;
	var filterFunc = function (elem) {
		var res = elem.isFolder || elem.children && elem.children.length;
		return res;
	};
	var callFunc = function (node, iterator) {
		_this.expand(node, true);
		iterator.forward();
	};
	var iterator = new dojo.widget.TreeTimeoutIterator(nodeOrTree, callFunc, this);
	iterator.setFilter(filterFunc);
	iterator.timeout = this.batchExpandTimeout;
	iterator.setMaxLevel(nodeOrTree.isTreeNode ? level - 1 : level);
	return iterator.start(nodeOrTree.isTreeNode);
}, getWidgetByNode:function (node) {
	var widgetId;
	var newNode = node;
	while (!(widgetId = newNode.widgetId)) {
		newNode = newNode.parentNode;
		if (newNode == null) {
			break;
		}
	}
	if (widgetId) {
		return dojo.widget.byId(widgetId);
	} else {
		if (node == null) {
			return null;
		} else {
			return dojo.widget.manager.byNode(node);
		}
	}
}, expand:function (node) {
	if (node.isFolder) {
		node.expand();
	}
}, collapse:function (node) {
	if (node.isFolder) {
		node.collapse();
	}
}, canEditLabel:function (node) {
	if (node.actionIsDisabledNow(node.actions.EDIT)) {
		return false;
	}
	return true;
}, editLabelStart:function (node) {
	if (!this.canEditLabel(node)) {
		return false;
	}
	if (!this.editor.isClosed()) {
		this.editLabelFinish(this.editor.saveOnBlur);
	}
	this.doEditLabelStart(node);
}, editLabelFinish:function (save) {
	this.doEditLabelFinish(save);
}, doEditLabelStart:function (node) {
	if (!this.editor) {
		dojo.raise(this.widgetType + ": no editor specified");
	}
	this.editor.open(node);
}, doEditLabelFinish:function (save, server_data) {
	if (!this.editor) {
		dojo.raise(this.widgetType + ": no editor specified");
	}
	var node = this.editor.node;
	var editorTitle = this.editor.getContents();
	this.editor.close(save);
	if (save) {
		var data = {title:editorTitle};
		if (server_data) {
			dojo.lang.mixin(data, server_data);
		}
		if (node.isPhantom) {
			var parent = node.parent;
			var index = node.getParentIndex();
			node.destroy();
			dojo.widget.TreeBasicControllerV3.prototype.doCreateChild.call(this, parent, index, data);
		} else {
			var title = server_data && server_data.title ? server_data.title : editorTitle;
			node.setTitle(title);
		}
	} else {
		if (node.isPhantom) {
			node.destroy();
		}
	}
}, makeDefaultNode:function (parent, index) {
	var data = {title:parent.tree.defaultChildTitle};
	return dojo.widget.TreeBasicControllerV3.prototype.doCreateChild.call(this, parent, index, data);
}, runStages:function (check, prepare, make, finalize, expose, args) {
	if (check && !check.apply(this, args)) {
		return false;
	}
	if (prepare && !prepare.apply(this, args)) {
		return false;
	}
	var result = make.apply(this, args);
	if (finalize) {
		finalize.apply(this, args);
	}
	if (!result) {
		return result;
	}
	if (expose) {
		expose.apply(this, args);
	}
	return result;
}});
dojo.lang.extend(dojo.widget.TreeBasicControllerV3, {createAndEdit:function (parent, index) {
	var data = {title:parent.tree.defaultChildTitle};
	if (!this.canCreateChild(parent, index, data)) {
		return false;
	}
	var child = this.doCreateChild(parent, index, data);
	if (!child) {
		return false;
	}
	this.exposeCreateChild(parent, index, data);
	child.isPhantom = true;
	if (!this.editor.isClosed()) {
		this.editLabelFinish(this.editor.saveOnBlur);
	}
	this.doEditLabelStart(child);
}});
dojo.lang.extend(dojo.widget.TreeBasicControllerV3, {canClone:function (child, newParent, index, deep) {
	return true;
}, clone:function (child, newParent, index, deep) {
	return this.runStages(this.canClone, this.prepareClone, this.doClone, this.finalizeClone, this.exposeClone, arguments);
}, exposeClone:function (child, newParent) {
	if (newParent.isTreeNode) {
		this.expand(newParent);
	}
}, doClone:function (child, newParent, index, deep) {
	var cloned = child.clone(deep);
	newParent.addChild(cloned, index);
	return cloned;
}});
dojo.lang.extend(dojo.widget.TreeBasicControllerV3, {canDetach:function (child) {
	if (child.actionIsDisabledNow(child.actions.DETACH)) {
		return false;
	}
	return true;
}, detach:function (node) {
	return this.runStages(this.canDetach, this.prepareDetach, this.doDetach, this.finalizeDetach, this.exposeDetach, arguments);
}, doDetach:function (node, callObj, callFunc) {
	node.detach();
}});
dojo.lang.extend(dojo.widget.TreeBasicControllerV3, {canDestroyChild:function (child) {
	if (child.parent && !this.canDetach(child)) {
		return false;
	}
	return true;
}, destroyChild:function (node) {
	return this.runStages(this.canDestroyChild, this.prepareDestroyChild, this.doDestroyChild, this.finalizeDestroyChild, this.exposeDestroyChild, arguments);
}, doDestroyChild:function (node) {
	node.destroy();
}});
dojo.lang.extend(dojo.widget.TreeBasicControllerV3, {canMoveNotANode:function (child, parent) {
	if (child.treeCanMove) {
		return child.treeCanMove(parent);
	}
	return true;
}, canMove:function (child, newParent) {
	if (!child.isTreeNode) {
		return this.canMoveNotANode(child, newParent);
	}
	if (child.actionIsDisabledNow(child.actions.MOVE)) {
		return false;
	}
	if (child.parent !== newParent && newParent.actionIsDisabledNow(newParent.actions.ADDCHILD)) {
		return false;
	}
	var node = newParent;
	while (node.isTreeNode) {
		if (node === child) {
			return false;
		}
		node = node.parent;
	}
	return true;
}, move:function (child, newParent, index) {
	return this.runStages(this.canMove, this.prepareMove, this.doMove, this.finalizeMove, this.exposeMove, arguments);
}, doMove:function (child, newParent, index) {
	child.tree.move(child, newParent, index);
	return true;
}, exposeMove:function (child, newParent) {
	if (newParent.isTreeNode) {
		this.expand(newParent);
	}
}});
dojo.lang.extend(dojo.widget.TreeBasicControllerV3, {canCreateChild:function (parent, index, data) {
	if (parent.actionIsDisabledNow(parent.actions.ADDCHILD)) {
		return false;
	}
	return true;
}, createChild:function (parent, index, data) {
	if (!data) {
		data = {title:parent.tree.defaultChildTitle};
	}
	return this.runStages(this.canCreateChild, this.prepareCreateChild, this.doCreateChild, this.finalizeCreateChild, this.exposeCreateChild, [parent, index, data]);
}, prepareCreateChild:function () {
	return true;
}, finalizeCreateChild:function () {
}, doCreateChild:function (parent, index, data) {
	var newChild = parent.tree.createNode(data);
	parent.addChild(newChild, index);
	return newChild;
}, exposeCreateChild:function (parent) {
	return this.expand(parent);
}});

Other Struts examples (source code examples)

Here is a short list of links related to this Struts TreeBasicControllerV3.js source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.