+++ /dev/null
-package net.sourceforge.phpdt.internal.ui.viewsupport;
-
-import java.util.ArrayList;
-
-import org.eclipse.jface.viewers.CheckStateChangedEvent;
-import org.eclipse.jface.viewers.CheckboxTreeViewer;
-import org.eclipse.jface.viewers.ICheckStateListener;
-import org.eclipse.jface.viewers.ITreeViewerListener;
-import org.eclipse.jface.viewers.TreeExpansionEvent;
-import org.eclipse.swt.widgets.Composite;
-import org.eclipse.swt.widgets.Item;
-import org.eclipse.swt.widgets.Tree;
-import org.eclipse.swt.widgets.TreeItem;
-import org.eclipse.swt.widgets.Widget;
-
-/**
- * CheckboxTreeViewer with special behaviour of the checked / gray state on
- * container (non-leaf) nodes: The grayed state is used to visualize the checked
- * state of its children. Containers are checked and non-gary if all contained
- * leafs are checked. The container is grayed if some but not all leafs are
- * checked.
- */
-public class ContainerCheckedTreeViewer extends CheckboxTreeViewer {
-
- /**
- * Constructor for ContainerCheckedTreeViewer.
- *
- * @see CheckboxTreeViewer#CheckboxTreeViewer(Composite)
- */
-// public ContainerCheckedTreeViewer(Composite parent) {
-// super(parent);
-// initViewer();
-// }
-
- /**
- * Constructor for ContainerCheckedTreeViewer.
- *
- * @see CheckboxTreeViewer#CheckboxTreeViewer(Composite,int)
- */
- public ContainerCheckedTreeViewer(Composite parent, int style) {
- super(parent, style);
- initViewer();
- }
-
- /**
- * Constructor for ContainerCheckedTreeViewer.
- *
- * @see CheckboxTreeViewer#CheckboxTreeViewer(Tree)
- */
-// public ContainerCheckedTreeViewer(Tree tree) {
-// super(tree);
-// initViewer();
-// }
-
- private void initViewer() {
- setUseHashlookup(true);
- addCheckStateListener(new ICheckStateListener() {
- public void checkStateChanged(CheckStateChangedEvent event) {
- doCheckStateChanged(event.getElement());
- }
- });
- addTreeListener(new ITreeViewerListener() {
- public void treeCollapsed(TreeExpansionEvent event) {
- }
-
- public void treeExpanded(TreeExpansionEvent event) {
- Widget item = findItem(event.getElement());
- if (item instanceof TreeItem) {
- initializeItem((TreeItem) item);
- }
- }
- });
- }
-
- protected void doCheckStateChanged(Object element) {
- Widget item = findItem(element);
- if (item instanceof TreeItem) {
- TreeItem treeItem = (TreeItem) item;
- treeItem.setGrayed(false);
- updateChildrenItems(treeItem);
- updateParentItems(treeItem.getParentItem());
- }
- }
-
- /**
- * The item has expanded. Updates the checked state of its children.
- */
- private void initializeItem(TreeItem item) {
- if (item.getChecked() && !item.getGrayed()) {
- updateChildrenItems((TreeItem) item);
- }
- }
-
- /**
- * Updates the check state of all created children
- */
- private void updateChildrenItems(TreeItem parent) {
- Item[] children = getChildren(parent);
- boolean state = parent.getChecked();
- for (int i = 0; i < children.length; i++) {
- TreeItem curr = (TreeItem) children[i];
- if (curr.getData() != null
- && ((curr.getChecked() != state) || curr.getGrayed())) {
- curr.setChecked(state);
- curr.setGrayed(false);
- updateChildrenItems(curr);
- }
- }
- }
-
- /**
- * Updates the check / gray state of all parent items
- */
- private 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);
- updateParentItems(item.getParentItem());
- }
- }
-
- public boolean setChecked(Object element, boolean state) {
- if (super.setChecked(element, state)) {
- doCheckStateChanged(element);
- return true;
- }
- return false;
- }
-
- public void setCheckedElements(Object[] elements) {
- super.setCheckedElements(elements);
- for (int i = 0; i < elements.length; i++) {
- doCheckStateChanged(elements[i]);
- }
- }
-
- protected void setExpanded(Item item, boolean expand) {
- super.setExpanded(item, expand);
- if (expand && item instanceof TreeItem) {
- initializeItem((TreeItem) item);
- }
- }
-
- public Object[] getCheckedElements() {
- Object[] checked = super.getCheckedElements();
- // add all items that are children of a checked node but not created yet
- ArrayList result = new ArrayList();
- for (int i = 0; i < checked.length; i++) {
- Object curr = checked[i];
- result.add(curr);
- Widget item = findItem(curr);
- if (item != null) {
- Item[] children = getChildren(item);
- // check if contains the dummy node
- if (children.length == 1 && children[0].getData() == null) {
- // not yet created
- collectChildren(curr, result);
- }
- }
- }
- return result.toArray();
- }
-
- private void collectChildren(Object element, ArrayList result) {
- Object[] filteredChildren = getFilteredChildren(element);
- for (int i = 0; i < filteredChildren.length; i++) {
- Object curr = filteredChildren[i];
- result.add(curr);
- collectChildren(curr, result);
- }
- }
-
-}
\ No newline at end of file
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