Revision 05d18da0
Added by Patrick Plitzner over 5 years ago
| eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/preference/wizard/CheckBoxTreeComposite.java | ||
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*/ |
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package eu.etaxonomy.taxeditor.preference.wizard; |
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import org.eclipse.jface.resource.JFaceResources; |
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import org.eclipse.jface.viewers.AbstractTreeViewer; |
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import org.eclipse.jface.viewers.CheckboxTreeViewer; |
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import org.eclipse.jface.viewers.IBaseLabelProvider; |
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import org.eclipse.jface.viewers.ITreeContentProvider; |
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import org.eclipse.jface.viewers.ITreeSelection; |
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import org.eclipse.swt.SWT; |
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import org.eclipse.swt.events.SelectionEvent; |
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import org.eclipse.swt.events.SelectionListener; |
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import org.eclipse.swt.graphics.Font; |
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import org.eclipse.swt.layout.GridData; |
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import org.eclipse.swt.layout.GridLayout; |
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import org.eclipse.swt.widgets.Button; |
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import org.eclipse.swt.widgets.Composite; |
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import org.eclipse.swt.widgets.Tree; |
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import org.eclipse.swt.widgets.TreeItem; |
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import org.eclipse.swt.widgets.Widget; |
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import eu.etaxonomy.taxeditor.model.ImageResources; |
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/** |
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* @author pplitzner |
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* @since Oct 26, 2018 |
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* |
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*/ |
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public class CheckBoxTreeComposite extends Composite {
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public class CheckBoxTreeComposite extends Composite implements SelectionListener {
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private static final Font FONT_DEFAULT = JFaceResources.getFontRegistry().get(JFaceResources.DEFAULT_FONT); |
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private static final Font FONT_ITALIC = JFaceResources.getFontRegistry().getItalic(JFaceResources.DEFAULT_FONT); |
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private static final Font FONT_BOLD = JFaceResources.getFontRegistry().getBold(JFaceResources.DEFAULT_FONT); |
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private CheckboxTreeViewer viewer; |
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private ITreeContentProvider contentProvider; |
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private Button btnCollapse; |
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private Button btnSelectChildren; |
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private Button btnExpand; |
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private Button btnSelectAllChildren; |
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public CheckBoxTreeComposite(Composite parent, ITreeContentProvider contentProvider, IBaseLabelProvider labelProvider, int style) {
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super(parent, style); |
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this.contentProvider = contentProvider; |
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Composite composite = new Composite(parent, SWT.NULL); |
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composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); |
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composite.setLayout(new GridLayout()); |
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Tree tree = new Tree(parent, SWT.BORDER | SWT.CHECK); |
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Composite toolbar = new Composite(composite, SWT.NONE); |
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toolbar.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false, 1, 1)); |
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toolbar.setLayout(new GridLayout(4, false)); |
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btnCollapse = new Button(toolbar, SWT.NONE); |
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btnCollapse.addSelectionListener(this); |
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btnCollapse.setImage(ImageResources.getImage(ImageResources.COLLAPSE_ALL)); |
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btnExpand = new Button(toolbar, SWT.NONE); |
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btnExpand.addSelectionListener(this); |
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btnExpand.setImage(ImageResources.getImage(ImageResources.EXPAND)); |
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btnSelectAllChildren = new Button(toolbar, SWT.NONE); |
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btnSelectAllChildren.addSelectionListener(this); |
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btnSelectAllChildren.setImage(ImageResources.getImage(ImageResources.HIERARCHICAL)); |
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btnSelectChildren = new Button(toolbar, SWT.NONE); |
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btnSelectChildren.addSelectionListener(this); |
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btnSelectChildren.setImage(ImageResources.getImage(ImageResources.FLAT)); |
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btnSelectChildren.setVisible(false); |
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Tree tree = new Tree(composite, SWT.BORDER | SWT.CHECK); |
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tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); |
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tree.addListener(SWT.Selection, event -> {
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if (event.detail == SWT.CHECK) {
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TreeItem item = (TreeItem) event.item; |
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Object data = item.getData(); |
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boolean checked = item.getChecked(); |
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if(checked){
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viewer.expandToLevel(data, AbstractTreeViewer.ALL_LEVELS); |
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} |
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checkItems(item, checked); |
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checkPath(item.getParentItem(), checked, false); |
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item.setGrayed(false); |
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item.setChecked(checked); |
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checkPath(item, checked, false); |
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} |
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}); |
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viewer = new CheckboxTreeViewer(tree); |
| ... | ... | |
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if (item == null) {
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return; |
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} |
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TreeItem[] items = item.getItems(); |
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if (grayed) {
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checked = true; |
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} else {
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int index = 0; |
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TreeItem[] items = item.getItems(); |
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while (index < items.length) {
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TreeItem child = items[index]; |
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if (child.getGrayed() || checked != child.getChecked()) {
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| ... | ... | |
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index++; |
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} |
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} |
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item.setChecked(checked); |
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item.setGrayed(grayed); |
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if(checked && items.length>0){
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item.setFont(FONT_BOLD); |
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if(grayed){
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item.setFont(FONT_ITALIC); |
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} |
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} |
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else{
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item.setFont(FONT_DEFAULT); |
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} |
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item.setExpanded(true); |
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checkPath(item.getParentItem(), checked, grayed); |
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} |
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private void checkItems(TreeItem item, boolean checked) {
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private void checkItems(TreeItem item, boolean checked, boolean recurseAll) {
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item.setGrayed(false); |
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item.setChecked(checked); |
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TreeItem[] items = item.getItems(); |
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if(items.length!=0){
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item.setFont(FONT_BOLD); |
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} |
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for (int i = 0; i < items.length; i++) {
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checkItems(items[i], checked); |
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if(recurseAll){
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checkItems(items[i], checked, true); |
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} |
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else{
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// items[i].setGrayed(false); |
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// items[i].setChecked(checked); |
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// TreeItem[] children = items[i].getItems(); |
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// for (TreeItem child : children) {
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// child.setExpanded(true); |
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// checkItems(child, false, false); |
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// checkPath(child, false, false); |
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// } |
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} |
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} |
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} |
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|
| ... | ... | |
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public void setCheckedElements(Object[] elements) {
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viewer.setCheckedElements(elements); |
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for (Object element : elements) {
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Object parent = contentProvider.getParent(element); |
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checkPath(parent); |
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Widget item = viewer.testFindItem(element); |
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if(item instanceof TreeItem){
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checkPath((TreeItem) item, true, false); |
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} |
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} |
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} |
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private void checkPath(Object object){
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if(object!=null){
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checkPath(contentProvider.getParent(object)); |
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viewer.expandToLevel(object, 1); |
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viewer.setGrayChecked(object, true); |
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@Override |
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public void widgetSelected(SelectionEvent e) {
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ITreeSelection structuredSelection = viewer.getStructuredSelection(); |
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Object firstElement = structuredSelection.getFirstElement(); |
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if(e.widget == btnCollapse){
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viewer.collapseAll(); |
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} |
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else if(e.widget == btnExpand){
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viewer.expandToLevel(firstElement, AbstractTreeViewer.ALL_LEVELS); |
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} |
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else if(e.widget == btnSelectChildren){
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TreeItem item = (TreeItem) viewer.testFindItem(firstElement); |
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if(item!=null){
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viewer.expandToLevel(firstElement, 1); |
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boolean checked = !item.getChecked(); |
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checkItems(item, checked, false); |
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checkPath(item, checked, false); |
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} |
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} |
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else if(e.widget == btnSelectAllChildren){
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viewer.expandToLevel(firstElement, AbstractTreeViewer.ALL_LEVELS); |
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TreeItem item = (TreeItem) viewer.testFindItem(firstElement); |
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if(item!=null){
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boolean checked = !item.getChecked(); |
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checkItems(item, checked, true); |
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checkPath(item, checked, false); |
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} |
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} |
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} |
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@Override |
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public void widgetDefaultSelected(SelectionEvent e) {
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} |
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public Button getBtnCollapse() {
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return btnCollapse; |
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} |
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public Button getBtnSelectChildren() {
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return btnSelectChildren; |
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} |
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public Button getBtnExpand() {
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return btnExpand; |
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} |
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public Button getBtnSelectAllChildren() {
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return btnSelectAllChildren; |
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} |
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} |
Also available in: Unified diff
ref #7912 Add toolbar to checkbox viewer + visualize selection state