Mercurial > projects > dwt-addons
view dwtx/jface/action/StatusLineContributionItem.d @ 72:5df4896124c7
JFace and its examples do compile
author | Frank Benoit <benoit@tionex.de> |
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date | Thu, 22 May 2008 17:56:17 +0200 |
parents | 4878bef4a38e |
children |
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/******************************************************************************* * Copyright (c) 2000, 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtx.jface.action.StatusLineContributionItem; import dwt.DWT; import dwt.custom.CLabel; import dwt.graphics.FontMetrics; import dwt.graphics.GC; import dwt.graphics.Point; import dwt.widgets.Composite; import dwt.widgets.Label; import dwtx.core.runtime.Assert; import dwtx.jface.util.Util; import dwtx.jface.action.ContributionItem; import dwtx.jface.action.StatusLineLayoutData; import dwtx.jface.action.IContributionManager; import dwt.dwthelper.utils; /** * A contribution item to be used with status line managers. * <p> * This class may be instantiated; it is not intended to be subclassed. * </p> * * @since 3.4 */ public class StatusLineContributionItem : ContributionItem { private const static int DEFAULT_CHAR_WIDTH = 40; private int charWidth; private CLabel label; /** * The composite into which this contribution item has been placed. This * will be <code>null</code> if this instance has not yet been * initialized. */ private Composite statusLine = null; private String text; private int widthHint = -1; private int heightHint = -1; /** * Creates a status line contribution item with the given id. * * @param id * the contribution item's id, or <code>null</code> if it is to * have no id */ public this(String id) { this(id, DEFAULT_CHAR_WIDTH); } /** * Creates a status line contribution item with the given id that displays * the given number of characters. * * @param id * the contribution item's id, or <code>null</code> if it is to * have no id * @param charWidth * the number of characters to display */ public this(String id, int charWidth) { text = Util.ZERO_LENGTH_STRING; super(id); this.charWidth = charWidth; setVisible(false); // no text to start with } public void fill(Composite parent) { statusLine = parent; Label sep = new Label(parent, DWT.SEPARATOR); label = new CLabel(statusLine, DWT.SHADOW_NONE); if (widthHint < 0) { GC gc = new GC(statusLine); gc.setFont(statusLine.getFont()); FontMetrics fm = gc.getFontMetrics(); widthHint = fm.getAverageCharWidth() * charWidth; heightHint = fm.getHeight(); gc.dispose(); } StatusLineLayoutData data = new StatusLineLayoutData(); data.widthHint = widthHint; label.setLayoutData(data); label.setText(text); data = new StatusLineLayoutData(); data.heightHint = heightHint; sep.setLayoutData(data); } /** * An accessor for the current location of this status line contribution * item -- relative to the display. * * @return The current location of this status line; <code>null</code> if * not yet initialized. */ public Point getDisplayLocation() { if ((label !is null) && (statusLine !is null)) { return statusLine.toDisplay(label.getLocation()); } return null; } /** * Retrieves the text that is being displayed in the status line. * * @return the text that is currently being displayed */ public String getText() { return text; } /** * Sets the text to be displayed in the status line. * * @param text * the text to be displayed, must not be <code>null</code> */ public void setText(String text) { Assert.isNotNull(text); this.text = escape(text); if (label !is null && !label.isDisposed()) { label.setText(this.text); } if (this.text.length is 0) { if (isVisible()) { setVisible(false); IContributionManager contributionManager = getParent(); if (contributionManager !is null) { contributionManager.update(true); } } } else { if (!isVisible()) { setVisible(true); IContributionManager contributionManager = getParent(); if (contributionManager !is null) { contributionManager.update(true); } } } } private String escape(String text) { return Util.replaceAll(text, "&", "&&"); //$NON-NLS-1$//$NON-NLS-2$ } }