--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/viewers/ViewerLabel.d	Mon Mar 31 00:47:19 2008 +0200
@@ -0,0 +1,418 @@
+/*******************************************************************************
+ * Copyright (c) 2004, 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
+ *     Tom Schindl <tom.shindl@bestsolution.at> - tooltip support
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.jface.viewers.ViewerLabel;
+
+import dwt.graphics.Color;
+import dwt.graphics.Font;
+import dwt.graphics.Image;
+import dwt.graphics.Point;
+
+import dwt.dwthelper.utils;
+
+/**
+ * The ViewerLabel is the class that is passed to a viewer to handle updates of
+ * labels. It keeps track of both original and updates text.
+ *
+ * @see IViewerLabelProvider
+ * @since 3.0
+ */
+public class ViewerLabel {
+
+    // New values for the receiver. Null if nothing has been set.
+    private String newText = null;
+
+    private Image newImage = null;
+
+    private bool imageUpdated = false;
+
+    private bool textUpdated = false;
+
+    private Color background = null;
+
+    private Color foreground = null;
+
+    private Font font = null;
+
+    // The initial values for the receiver.
+    private String startText;
+
+    private Image startImage;
+
+    private bool hasPendingDecorations_;
+
+    private String tooltipText;
+
+    private Color tooltipForegroundColor;
+
+    private Color tooltipBackgroundColor;
+
+    private Point tooltipShift;
+
+    /**
+     * Create a new instance of the receiver with the supplied initial text and
+     * image.
+     *
+     * @param initialText
+     * @param initialImage
+     */
+    public this(String initialText, Image initialImage) {
+        startText = initialText;
+        startImage = initialImage;
+    }
+
+    /**
+     * Get the image for the receiver. If the new image has been set return it,
+     * otherwise return the starting image.
+     *
+     * @return Returns the image.
+     */
+    public final Image getImage() {
+        if (imageUpdated) {
+            return newImage;
+        }
+        return startImage;
+    }
+
+    /**
+     * Set the image for the receiver.
+     *
+     * @param image
+     *            The image to set.
+     */
+    public final void setImage(Image image) {
+        imageUpdated = true;
+        newImage = image;
+    }
+
+    /**
+     * Get the text for the receiver. If the new text has been set return it,
+     * otherwise return the starting text.
+     *
+     * @return String or <code>null</code> if there was no initial text and
+     *         nothing was updated.
+     */
+    public final String getText() {
+        if (textUpdated) {
+            return newText;
+        }
+        return startText;
+    }
+
+    /**
+     * Set the text for the receiver.
+     *
+     * @param text
+     *            String The label to set. This value should not be
+     *            <code>null</code>.
+     * @see #hasNewText()
+     */
+    public final void setText(String text) {
+        newText = text;
+        textUpdated = true;
+    }
+
+    /**
+     * Return whether or not the image has been set.
+     *
+     * @return bool. <code>true</code> if the image has been set to
+     *         something new.
+     *
+     * @since 3.1
+     */
+    public bool hasNewImage() {
+
+        // If we started with null any change is an update
+        if (startImage is null) {
+            return newImage !is null;
+        }
+
+        if (imageUpdated) {
+            return !(startImage.opEquals(newImage));
+        }
+        return false;
+    }
+
+    /**
+     * Return whether or not the text has been set.
+     *
+     * @return bool. <code>true</code> if the text has been set to
+     *         something new.
+     */
+    public bool hasNewText() {
+
+        // If we started with null any change is an update
+        if (startText is null) {
+            return newText !is null;
+        }
+
+        if (textUpdated) {
+            return !(startText.equals(newText));
+        }
+
+        return false;
+    }
+
+    /**
+     * Return whether or not the background color has been set.
+     *
+     * @return bool. <code>true</code> if the value has been set.
+     */
+    public bool hasNewBackground() {
+        return background !is null;
+    }
+
+    /**
+     * Return whether or not the foreground color has been set.
+     *
+     * @return bool. <code>true</code> if the value has been set.
+     *
+     * @since 3.1
+     */
+    public bool hasNewForeground() {
+        return foreground !is null;
+    }
+
+    /**
+     * Return whether or not the font has been set.
+     *
+     * @return bool. <code>true</code> if the value has been set.
+     *
+     * @since 3.1
+     */
+    public bool hasNewFont() {
+        return font !is null;
+    }
+
+    /**
+     * Get the background Color.
+     *
+     * @return Color or <code>null</code> if no new value was set.
+     *
+     * @since 3.1
+     */
+    public Color getBackground() {
+        return background;
+    }
+
+    /**
+     * Set the background Color.
+     *
+     * @param background
+     *            Color. This value should not be <code>null</code>.
+     *
+     * @since 3.1
+     */
+    public void setBackground(Color background) {
+        this.background = background;
+    }
+
+    /**
+     * Get the font.
+     *
+     * @return Font or <code>null</code> if no new value was set.
+     *
+     * @since 3.1
+     */
+    public Font getFont() {
+        return font;
+    }
+
+    /**
+     * Set the font.
+     *
+     * @param font
+     *            Font This value should not be <code>null</code>.
+     *
+     * @since 3.1
+     */
+    public void setFont(Font font) {
+        this.font = font;
+    }
+
+    /**
+     * Get the foreground Color.
+     *
+     * @return Color or <code>null</code> if no new value was set.
+     *
+     * @since 3.1
+     */
+    public Color getForeground() {
+        return foreground;
+    }
+
+    /**
+     * Set the foreground Color.
+     *
+     * @param foreground
+     *            Color This value should not be <code>null</code>.
+     *
+     * @since 3.1
+     */
+    public void setForeground(Color foreground) {
+        this.foreground = foreground;
+    }
+
+    /**
+     * Set whether or not there are any decorations pending.
+     *
+     * @param hasPendingDecorations
+     */
+    void setHasPendingDecorations(bool hasPendingDecorations_) {
+        this.hasPendingDecorations_ = hasPendingDecorations_;
+    }
+
+    /**
+     * @return <code>bool</code>. <code>true</code> if there are any
+     *         decorations pending.
+     */
+    bool hasPendingDecorations() {
+        return hasPendingDecorations_;
+    }
+
+    /**
+     * Returns the tooltipText.
+     *
+     * @return {@link String} or <code>null</code> if the tool tip text was
+     *         never set.
+     *
+     * @since 3.3
+     */
+    public String getTooltipText() {
+        return tooltipText;
+    }
+
+    /**
+     * Set the tool tip text.
+     *
+     * @param tooltipText
+     *            The tooltipText {@link String} to set. This value should not
+     *            be <code>null</code>.
+     *
+     * @since 3.3
+     */
+    public void setTooltipText(String tooltipText) {
+        this.tooltipText = tooltipText;
+    }
+
+    /**
+     * Return whether or not the tool tip text has been set.
+     *
+     * @return <code>bool</code>. <code>true</code> if the tool tip text
+     *         has been set.
+     *
+     * @since 3.3
+     */
+    public bool hasNewTooltipText() {
+        return this.tooltipText !is null;
+    }
+
+    /**
+     * Return the tool tip background color.
+     *
+     * @return {@link Color} or <code>null</code> if the tool tip background
+     *         color has not been set.
+     *
+     * @since 3.3
+     */
+    public Color getTooltipBackgroundColor() {
+        return tooltipBackgroundColor;
+    }
+
+    /**
+     * Set the background {@link Color} for tool tip.
+     *
+     * @param tooltipBackgroundColor
+     *            The {@link Color} to set. This value should not be
+     *            <code>null</code>.
+     *
+     * @since 3.3
+     */
+    public void setTooltipBackgroundColor(Color tooltipBackgroundColor) {
+        this.tooltipBackgroundColor = tooltipBackgroundColor;
+    }
+
+    /**
+     * Return whether or not the tool tip background color has been set.
+     *
+     * @return <code>bool</code>. <code>true</code> if the tool tip text
+     *         has been set.
+     *
+     * @since 3.3
+     */
+    public bool hasNewTooltipBackgroundColor() {
+        return tooltipBackgroundColor !is null;
+    }
+
+    /**
+     * Return the foreground {@link Color}.
+     *
+     * @return Returns {@link Color} or <code>null</code> if the tool tip
+     *         foreground color has not been set.
+     *
+     * @since 3.3
+     */
+    public Color getTooltipForegroundColor() {
+        return tooltipForegroundColor;
+    }
+
+    /**
+     * Set the foreground {@link Color} for tool tip.
+     *
+     * @param tooltipForegroundColor
+     *            The tooltipForegroundColor to set.
+     *
+     * @since 3.3
+     */
+    public void setTooltipForegroundColor(Color tooltipForegroundColor) {
+        this.tooltipForegroundColor = tooltipForegroundColor;
+    }
+
+    /**
+     *
+     * Return whether or not the tool tip foreground color has been set.
+     *
+     * @return <code>bool</code>. <code>true</code> if the tool tip foreground
+     *         has been set.
+     *
+     * @since 3.3
+     */
+    public bool hasNewTooltipForegroundColor() {
+        return tooltipForegroundColor !is null;
+    }
+
+    /**
+     * @return Returns the tooltipShift.
+     * @since 3.3
+     */
+    public Point getTooltipShift() {
+        return tooltipShift;
+    }
+
+    /**
+     * @param tooltipShift
+     *            The tooltipShift to set.
+     * @since 3.3
+     */
+    public void setTooltipShift(Point tooltipShift) {
+        this.tooltipShift = tooltipShift;
+    }
+
+    /**
+     * @return Return whether or not the tool tip shift has been set.
+     * @since 3.3
+     */
+    public bool hasTooltipShift() {
+        return this.tooltipShift !is null;
+    }
+}