| /* |
| * $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.struts2.dojo.components; |
| |
| import java.util.Random; |
| |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.struts2.components.ClosingUIBean; |
| import org.apache.struts2.views.annotations.StrutsTag; |
| import org.apache.struts2.views.annotations.StrutsTagAttribute; |
| import org.apache.struts2.views.annotations.StrutsTagSkipInheritance; |
| |
| import com.opensymphony.xwork2.util.ValueStack; |
| |
| /** |
| * <!-- START SNIPPET: javadoc --> |
| * |
| * Renders a tree node within a tree widget with AJAX support.<p/> |
| * |
| * Either of the following combinations should be used depending on if the tree |
| * is to be constructed dynamically or statically. <p/> |
| * |
| * <b>Dynamically:</b> |
| * <ul> |
| * <li>id - id of this tree node</li> |
| * <li>title - label to be displayed for this tree node</li> |
| * </ul> |
| * |
| * <b>Statically:</b> |
| * <ul> |
| * <li>rootNode - the parent node of which this tree is derived from</li> |
| * <li>nodeIdProperty - property to obtained this current tree node's id</li> |
| * <li>nodeTitleProperty - property to obtained this current tree node's title</li> |
| * <li>childCollectionProperty - property that returnds this current tree node's children</li> |
| * </ul> |
| * |
| * <!-- END SNIPPET: javadoc --> |
| * |
| * <p/> <b>Examples</b> |
| * |
| * <pre> |
| * <!-- START SNIPPET: example --> |
| * |
| * <-- Creating tree statically using hard-coded data. --> |
| * <s:tree id="..." label="..."> |
| * <s:treenode id="..." label="..." /> |
| * <s:treenode id="..." label="..."> |
| * <s:treenode id="..." label="..." /> |
| * <s:treenode id="..." label="..." /> |
| * </s:treenode> |
| * <s:treenode id="..." label="..." /> |
| * </s:tree> |
| * |
| * <-- Creating tree dynamically using data from backing action. --> |
| * <s:tree |
| * id="..." |
| * rootNode="..." |
| * nodeIdProperty="..." |
| * nodeTitleProperty="..." |
| * childCollectionProperty="..." /> |
| * |
| * <!-- END SNIPPET: example --> |
| * </pre> |
| * |
| */ |
| @StrutsTag(name="treenode", tldTagClass="org.apache.struts2.dojo.views.jsp.ui.TreeNodeTag", description="Render a tree node within a tree widget.") |
| public class TreeNode extends ClosingUIBean { |
| private static final String TEMPLATE = "treenode-close"; |
| private static final String OPEN_TEMPLATE = "treenode"; |
| private final static transient Random RANDOM = new Random(); |
| |
| public TreeNode(ValueStack stack, HttpServletRequest request, HttpServletResponse response) { |
| super(stack, request, response); |
| } |
| |
| @Override |
| @StrutsTagSkipInheritance |
| public void setTheme(String theme) { |
| super.setTheme(theme); |
| } |
| |
| @Override |
| public String getTheme() { |
| return "ajax"; |
| } |
| |
| public String getDefaultOpenTemplate() { |
| return OPEN_TEMPLATE; |
| } |
| |
| protected String getDefaultTemplate() { |
| return TEMPLATE; |
| } |
| |
| protected void evaluateExtraParams() { |
| super.evaluateExtraParams(); |
| |
| // generate a random ID if not explicitly set and not parsing the content |
| Boolean parseContent = (Boolean)stack.getContext().get(Head.PARSE_CONTENT); |
| boolean generateId = (parseContent != null ? !parseContent : true); |
| |
| addParameter("pushId", generateId); |
| if ((this.id == null || this.id.length() == 0) && generateId) { |
| // resolves Math.abs(Integer.MIN_VALUE) issue reported by FindBugs |
| // http://findbugs.sourceforge.net/bugDescriptions.html#RV_ABSOLUTE_VALUE_OF_RANDOM_INT |
| int nextInt = RANDOM.nextInt(); |
| nextInt = nextInt == Integer.MIN_VALUE ? Integer.MAX_VALUE : Math.abs(nextInt); |
| this.id = "widget_" + String.valueOf(nextInt); |
| addParameter("id", this.id); |
| } |
| |
| Tree parentTree = (Tree) findAncestor(Tree.class); |
| parentTree.addChildrenId(this.id); |
| } |
| |
| @StrutsTagAttribute(description="Label expression used for rendering tree node label.", required=true) |
| public void setLabel(String label) { |
| super.setLabel(label); |
| } |
| |
| @StrutsTagAttribute(description="The css class to use for element") |
| public void setCssClass(String cssClass) { |
| super.setCssClass(cssClass); |
| } |
| |
| @StrutsTagAttribute(description="The css style to use for element") |
| public void setCssStyle(String cssStyle) { |
| super.setCssStyle(cssStyle); |
| } |
| |
| @StrutsTagAttribute(description="The id to use for the element") |
| public void setId(String id) { |
| super.setId(id); |
| } |
| |
| @StrutsTagAttribute(description="The name to set for element") |
| public void setName(String name) { |
| super.setName(name); |
| } |
| } |