Java tutorial
package com.windowtester.test.locator.swt.shells; import java.util.ArrayList; import org.eclipse.jface.resource.FontRegistry; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ICellModifier; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TextCellEditor; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.MouseAdapter; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Item; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.swt.widgets.TreeItem; /******************************************************************************* * Copyright (c) 2012 Google, Inc. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Google, Inc. - initial API and implementation *******************************************************************************/ public class TreeCellLocatorShell { public TreeItem lastSelectedItem; public int lastSelectedItemColumn; private class MyContentProvider implements ITreeContentProvider { /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) */ public Object[] getElements(Object inputElement) { return ((MyModel) inputElement).child.toArray(); } /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.IContentProvider#dispose() */ public void dispose() { } /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, * java.lang.Object, java.lang.Object) */ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) */ public Object[] getChildren(Object parentElement) { return getElements(parentElement); } /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) */ public Object getParent(Object element) { if (element == null) { return null; } return ((MyModel) element).parent; } /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) */ public boolean hasChildren(Object element) { return ((MyModel) element).child.size() > 0; } } public class MyModel { public MyModel parent; public ArrayList child = new ArrayList(); public int counter; public MyModel(int counter, MyModel parent) { this.parent = parent; this.counter = counter; } public String toString() { String rv = ""; if (parent != null) { rv = parent.toString() + "."; } rv += counter; return rv; } } public class MyLabelProvider extends LabelProvider implements ITableLabelProvider { FontRegistry registry = new FontRegistry(); public Image getColumnImage(Object element, int columnIndex) { return null; } public String getColumnText(Object element, int columnIndex) { return columnIndex + "." + element.toString(); } } public TreeCellLocatorShell(Shell shell) { final TreeViewer v = new TreeViewer(shell, SWT.FULL_SELECTION); TreeColumn column = new TreeColumn(v.getTree(), SWT.NONE); column.setWidth(200); column.setText("Column 1"); column = new TreeColumn(v.getTree(), SWT.NONE); column.setWidth(200); column.setText("Column 2"); v.setCellEditors(new CellEditor[] { new TextCellEditor(v.getTree()), new TextCellEditor(v.getTree()) }); v.setColumnProperties(new String[] { "col1", "col2" }); v.setCellModifier(new ICellModifier() { public boolean canModify(Object element, String property) { return true; } public Object getValue(Object element, String property) { return ((MyModel) element).counter + ""; } public void modify(Object element, String property, Object value) { ((MyModel) ((TreeItem) element).getData()).counter = Integer.parseInt(value.toString()); v.update(((TreeItem) element).getData(), null); } }); v.setLabelProvider(new MyLabelProvider()); v.setContentProvider(new MyContentProvider()); v.setInput(createModel()); v.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { System.out.println(event); } }); v.getTree().addMouseListener(new MouseAdapter() { /* (non-Javadoc) * @see org.eclipse.swt.events.MouseAdapter#mouseDown(org.eclipse.swt.events.MouseEvent) */ @Override public void mouseDown(MouseEvent e) { Tree t = v.getTree(); TreeItem[] items = t.getSelection(); TreeItem item = items[0]; for (int i = 0; i < t.getColumnCount(); i++) { Rectangle bounds = getBounds(item, i); if (bounds.contains(e.x, e.y)) { selected(item, i); break; } } } }); } private static Rectangle getBounds(Item item, int columnNumber) { return ((TreeItem) item).getBounds(columnNumber); } private void selected(TreeItem item, int column) { this.lastSelectedItem = item; this.lastSelectedItemColumn = column; System.out.println("Active Column: " + column); } private MyModel createModel() { MyModel root = new MyModel(0, null); root.counter = 0; MyModel tmp; for (int i = 1; i < 10; i++) { tmp = new MyModel(i, root); root.child.add(tmp); for (int j = 1; j < i; j++) { tmp.child.add(new MyModel(j, tmp)); } } return root; } public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new FillLayout()); new TreeCellLocatorShell(shell); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } }