| package org.eclipse.epf.authoring.ui.views; |
| |
| import org.eclipse.jface.viewers.CheckboxTreeViewer; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Item; |
| import org.eclipse.swt.widgets.Tree; |
| import org.eclipse.swt.widgets.TreeItem; |
| |
| /** |
| * ContainerCheckedTreeViewer that does not check a parent when all children are checked. |
| * Parent will remain grayed until checked by the user. |
| * @author Jeff Hardy |
| * |
| */ |
| public class MethodContainerCheckedTreeViewer2 extends MethodContainerCheckedTreeViewer { |
| |
| /** |
| * Constructor for ContainerCheckedTreeViewer2. |
| * @see CheckboxTreeViewer#CheckboxTreeViewer(Composite) |
| */ |
| public MethodContainerCheckedTreeViewer2(Composite parent) { |
| super(parent); |
| initViewer(); |
| } |
| |
| /** |
| * Constructor for ContainerCheckedTreeViewer2. |
| * @see CheckboxTreeViewer#CheckboxTreeViewer(Composite,int) |
| */ |
| public MethodContainerCheckedTreeViewer2(Composite parent, int style) { |
| super(parent, style); |
| initViewer(); |
| } |
| |
| /** |
| * Constructor for ContainerCheckedTreeViewer2. |
| * @see CheckboxTreeViewer#CheckboxTreeViewer(Tree) |
| */ |
| public MethodContainerCheckedTreeViewer2(Tree tree) { |
| super(tree); |
| initViewer(); |
| } |
| |
| /** |
| * Updates the check / gray state of all parent items |
| */ |
| protected void updateParentItems(TreeItem item) { |
| if (item != null) { |
| Item[] children = getChildren(item); |
| boolean containsChecked = false; |
| boolean containsUnchecked = false; |
| for (int i = 0; i < children.length; i++) { |
| TreeItem curr = (TreeItem) children[i]; |
| containsChecked |= curr.getChecked(); |
| containsUnchecked |= (!curr.getChecked() || curr.getGrayed()); |
| } |
| item.setChecked(containsChecked); |
| // item.setGrayed(containsChecked && containsUnchecked); |
| item.setGrayed(containsChecked); |
| if (expandWhenChecking && item.getChecked()) { |
| item.setExpanded(true); |
| } |
| updateParentItems(item.getParentItem()); |
| } |
| } |
| } |