| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jface.internal.text.link.contentassist; |
| |
| |
| import org.eclipse.swt.events.FocusEvent; |
| import org.eclipse.swt.events.FocusListener; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.SelectionListener; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.ScrollBar; |
| import org.eclipse.swt.widgets.Table; |
| |
| |
| /** |
| * A generic closer class used to monitor various |
| * interface events in order to determine whether |
| * a content assistant should be terminated and all |
| * associated windows be closed. |
| */ |
| class PopupCloser2 implements FocusListener, SelectionListener { |
| |
| /** The content assistant to be monitored */ |
| private ContentAssistant2 fContentAssistant; |
| /** The table of a selector popup opened by the content assistant */ |
| private Table fTable; |
| /** The scrollbar of the table for the selector popup */ |
| private ScrollBar fScrollbar; |
| /** Indicates whether the scrollbar thumb has been grabed */ |
| private boolean fScrollbarClicked= false; |
| |
| /** |
| * Installs this closer on the given table opened by the given content assistant. |
| * |
| * @param contentAssistant the content assistant |
| * @param table the table to be tracked |
| */ |
| public void install(ContentAssistant2 contentAssistant, Table table) { |
| fContentAssistant= contentAssistant; |
| fTable= table; |
| if (Helper2.okToUse(fTable)) { |
| fTable.addFocusListener(this); |
| fScrollbar= fTable.getVerticalBar(); |
| if (fScrollbar != null) |
| fScrollbar.addSelectionListener(this); |
| } |
| } |
| |
| /** |
| * Uninstalls this closer if previously installed. |
| */ |
| public void uninstall() { |
| if (Helper2.okToUse(fScrollbar)) |
| fScrollbar.removeSelectionListener(this); |
| if (Helper2.okToUse(fTable)) |
| fTable.removeFocusListener(this); |
| } |
| |
| /* |
| * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent) |
| */ |
| public void widgetSelected(SelectionEvent e) { |
| fScrollbarClicked= true; |
| } |
| |
| /* |
| * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent) |
| */ |
| public void widgetDefaultSelected(SelectionEvent e) { |
| fScrollbarClicked= true; |
| } |
| |
| /* |
| * @see org.eclipse.swt.events.FocusListener#focusGained(org.eclipse.swt.events.FocusEvent) |
| */ |
| public void focusGained(FocusEvent e) { |
| } |
| |
| /* |
| * @see org.eclipse.swt.events.FocusListener#focusLost(org.eclipse.swt.events.FocusEvent) |
| */ |
| public void focusLost(final FocusEvent e) { |
| fScrollbarClicked= false; |
| Display d= fTable.getDisplay(); |
| d.asyncExec(new Runnable() { |
| public void run() { |
| if (Helper2.okToUse(fTable) && !fTable.isFocusControl() && !fScrollbarClicked) |
| fContentAssistant.popupFocusLost(e); |
| } |
| }); |
| } |
| } |