| /******************************************************************************* |
| * Copyright (c) 2005, 2007 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jface.snippets.viewers; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.jface.viewers.ColumnViewer; |
| import org.eclipse.jface.viewers.FocusCellHighlighter; |
| import org.eclipse.jface.viewers.ViewerCell; |
| import org.eclipse.jface.viewers.ViewerRow; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Listener; |
| |
| public class FocusBorderCellHighlighter extends FocusCellHighlighter { |
| private ViewerCell oldCell; |
| |
| /** |
| * @param viewer |
| * the viewer |
| */ |
| public FocusBorderCellHighlighter(ColumnViewer viewer) { |
| super(viewer); |
| hookListener(viewer); |
| } |
| |
| private void markFocusedCell(Event event, ViewerCell cell) { |
| GC gc = event.gc; |
| |
| Rectangle rect = event.getBounds(); |
| gc.drawFocus(rect.x, rect.y, rect.width, rect.height); |
| |
| event.detail &= ~SWT.SELECTED; |
| } |
| |
| private void removeSelectionInformation(Event event, ViewerCell cell) { |
| |
| } |
| |
| private void hookListener(final ColumnViewer viewer) { |
| |
| Listener listener = new Listener() { |
| |
| public void handleEvent(Event event) { |
| if ((event.detail & SWT.SELECTED) > 0) { |
| ViewerCell focusCell = getFocusCell(); |
| ViewerRow row = focusCell.getViewerRow(); |
| |
| Assert |
| .isNotNull(row, |
| "Internal structure invalid. Item without associated row is not possible."); //$NON-NLS-1$ |
| |
| ViewerCell cell = row.getCell(event.index); |
| |
| if (focusCell == null || !cell.equals(focusCell)) { |
| removeSelectionInformation(event, cell); |
| } else { |
| markFocusedCell(event, cell); |
| } |
| } |
| } |
| |
| }; |
| viewer.getControl().addListener(SWT.EraseItem, listener); |
| } |
| |
| /** |
| * @param cell |
| * the cell which is colored |
| * @return the color |
| */ |
| protected Color getSelectedCellBackgroundColor(ViewerCell cell) { |
| return null; |
| } |
| |
| /** |
| * @param cell |
| * the cell which is colored |
| * @return the color |
| */ |
| protected Color getSelectedCellForegroundColor(ViewerCell cell) { |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.FocusCellHighlighter#focusCellChanged(org.eclipse.jface.viewers.ViewerCell) |
| */ |
| protected void focusCellChanged(ViewerCell cell) { |
| super.focusCellChanged(cell); |
| |
| // Redraw new area |
| if (cell != null) { |
| Rectangle rect = cell.getBounds(); |
| int x = cell.getColumnIndex() == 0 ? 0 : rect.x; |
| int width = cell.getColumnIndex() == 0 ? rect.x + rect.width |
| : rect.width; |
| cell.getControl().redraw(x, rect.y, width, rect.height, true); |
| } |
| |
| if (oldCell != null) { |
| Rectangle rect = oldCell.getBounds(); |
| int x = oldCell.getColumnIndex() == 0 ? 0 : rect.x; |
| int width = oldCell.getColumnIndex() == 0 ? rect.x + rect.width |
| : rect.width; |
| oldCell.getControl().redraw(x, rect.y, width, rect.height, true); |
| } |
| |
| this.oldCell = cell; |
| } |
| } |