Mercurial > projects > dwt-addons
view dwtx/jface/internal/text/link/contentassist/PopupCloser2.d @ 129:eb30df5ca28b
Added JFace Text sources
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 23 Aug 2008 19:10:48 +0200 |
parents | |
children | c4fb132a086c |
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/******************************************************************************* * Copyright (c) 2000, 2005 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtx.jface.internal.text.link.contentassist.PopupCloser2; import dwt.dwthelper.utils; import dwt.events.FocusEvent; import dwt.events.FocusListener; import dwt.events.SelectionEvent; import dwt.events.SelectionListener; import dwt.events.ShellAdapter; import dwt.events.ShellEvent; import dwt.widgets.Display; import dwt.widgets.ScrollBar; import dwt.widgets.Shell; import dwt.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 : ShellAdapter , 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 grabbed. */ private bool fScrollbarClicked= false; /** The shell on which some listeners are registered. */ private Shell fShell; /** * 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)) { Shell shell= fTable.getShell(); if (Helper2.okToUse(shell)) { fShell= shell; fShell.addShellListener(this); } fTable.addFocusListener(this); fScrollbar= fTable.getVerticalBar(); if (fScrollbar !is null) fScrollbar.addSelectionListener(this); } } /** * Uninstalls this closer if previously installed. */ public void uninstall() { fContentAssistant= null; if (Helper2.okToUse(fShell)) fShell.removeShellListener(this); fShell= null; if (Helper2.okToUse(fScrollbar)) fScrollbar.removeSelectionListener(this); if (Helper2.okToUse(fTable)) fTable.removeFocusListener(this); } /* * @see dwt.events.SelectionListener#widgetSelected(dwt.events.SelectionEvent) */ public void widgetSelected(SelectionEvent e) { fScrollbarClicked= true; } /* * @see dwt.events.SelectionListener#widgetDefaultSelected(dwt.events.SelectionEvent) */ public void widgetDefaultSelected(SelectionEvent e) { fScrollbarClicked= true; } /* * @see dwt.events.FocusListener#focusGained(dwt.events.FocusEvent) */ public void focusGained(FocusEvent e) { } /* * @see dwt.events.FocusListener#focusLost(dwt.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 !is null) fContentAssistant.popupFocusLost(e); } }); } /* * @see dwt.events.ShellAdapter#shellDeactivated(dwt.events.ShellEvent) * @since 3.1 */ public void shellDeactivated(ShellEvent e) { if (fContentAssistant !is null) fContentAssistant.hide(); } /* * @see dwt.events.ShellAdapter#shellClosed(dwt.events.ShellEvent) * @since 3.1 */ public void shellClosed(ShellEvent e) { if (fContentAssistant !is null) fContentAssistant.hide(); } }