Hi all, I made some changes based on the CheckBoxIconPanel.java posted by Doug, basically I added behavior to update all parents or childrens when we check or uncheck a node: * When we check a node, we verify all its brothers, if they are all checked then we check its parent and recursively. * When we check a non leaf node we check all its children recursively. * When we uncheck a node we uncheck all its parents until the root. I hope it will useful for someone.
/* * 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. */ import javax.swing.tree.TreeNode; import org.apache.wicket.MarkupContainer; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.markup.html.tree.BaseTree; import org.apache.wicket.markup.html.tree.LabelIconPanel; import org.apache.wicket.model.IModel; /** * Simple panel that contains a link with icon and a link with a label. * * @author Matej Knopp */ public class CheckBoxIconPanel extends LabelIconPanel { private static final long serialVersionUID = 1L; /** * Constructs the panel. * * @param id * component id * @param model * model that is used to access the TreeNode * @param tree */ public CheckBoxIconPanel(String id, IModel model, CheckBoxTree tree) { super(id, model, tree); } /** * @see org.apache.wicket.markup.html.tree.LabelIconPanel#addComponents(org.apache.wicket.model.IModel, * org.apache.wicket.markup.html.tree.BaseTree) */ protected void addComponents(final IModel model, final BaseTree tree) { final CheckBoxTree cbTree = (CheckBoxTree)tree; CheckBoxTree.ICheckCallback callback = new CheckBoxTree.ICheckCallback() { private static final long serialVersionUID = 1L; public void onUpdate(AjaxRequestTarget target) { onNodeCheckUpdated((TreeNode)model.getObject(), cbTree, target); } }; add(newImageComponent("icon", tree, model)); IModel dataModel = cbTree.newCheckBoxModel((TreeNode)model.getObject()); MarkupContainer cb = null; add( cb = cbTree.newCheckBox("checkbox", dataModel, callback) ); add(newContentComponent("content", tree, model)); } /** * Handler invoked when the checkbox is clicked. By default makes the node selected * * @param node * @param tree * @param target */ protected void onNodeCheckUpdated(TreeNode node, CheckBoxTree tree, AjaxRequestTarget target) { if (tree.getTreeState().isNodeSelected(node)) { deselectAllParent(node, tree); selectAllChildren(node, tree, false); } else { selectAllChildren(node, tree, true); updateSelectionIfLastSelected(node, tree); } tree.updateTree(target); } /** * When a node of leaf is selected we search for all its brothers, if all are selected too we select the parent and recursively until the root. * * @param node * @param tree * @param target */ protected void updateSelectionIfLastSelected(TreeNode node, CheckBoxTree tree) { TreeNode parent = node.getParent(); while(parent != null) { int childCount = parent.getChildCount(); for (int i = 0; i < childCount; i++) { if(!tree.getTreeState().isNodeSelected(parent.getChildAt(i))) { return; } } tree.getTreeState().selectNode(parent, true); parent = parent.getParent(); } } /** * When a node / leaf is deselected all its parent are deselected too. * * @param node * @param tree * @param target */ protected void deselectAllParent(TreeNode node, CheckBoxTree tree) { TreeNode parent = node.getParent(); while(parent != null) { tree.getTreeState().selectNode(parent, false); parent = parent.getParent(); } } /** * When a node is selected all its children are selected too * * @param node * @param tree * @param target */ protected void selectAllChildren(TreeNode node, CheckBoxTree tree, boolean check) { if (node.isLeaf()) { tree.getTreeState().selectNode(node, check); } else { tree.getTreeState().selectNode(node, check); int childCount = node.getChildCount(); for (int i = 0; i < childCount; i++) { selectAllChildren(node.getChildAt(i), tree, check); } } } } -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Checkbox-tree-component-tp1892569p4451127.html Sent from the Users forum mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
