1 files changed, 91 insertions, 0 deletions
diff --git a/target_explorer/plugins/org.eclipse.tcf.te.ui.swt/src/org/eclipse/tcf/te/ui/swt/listener/AbstractCheckBoxCellPaintListener.java b/target_explorer/plugins/org.eclipse.tcf.te.ui.swt/src/org/eclipse/tcf/te/ui/swt/listener/AbstractCheckBoxCellPaintListener.java
new file mode 100644
index 000000000..4dec98884
--- /dev/null
+++ b/target_explorer/plugins/org.eclipse.tcf.te.ui.swt/src/org/eclipse/tcf/te/ui/swt/listener/AbstractCheckBoxCellPaintListener.java
@@ -0,0 +1,91 @@
+/**
+ * AbstractCheckBoxCellPaintListener.java
+ * Created on Aug 21, 2011
+ *
+ * Copyright (c) 2011 Wind River Systems, Inc.
+ *
+ * The right to copy, distribute, modify, or otherwise make use
+ * of this software may be licensed only pursuant to the terms
+ * of an applicable Wind River license agreement.
+ */
+package org.eclipse.tcf.te.ui.swt.listener;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Item;
+import org.eclipse.swt.widgets.Widget;
+import org.eclipse.tcf.te.ui.swt.SWTControlUtil;
+
+/**
+ * Abstract check box cell paint listener implementation.
+ */
+public abstract class AbstractCheckBoxCellPaintListener extends AbstractCellPaintListener {
+
+	private static final int ENABLED = 1;
+	private static final int CHECKED = 2;
+	private static final int TRISTATE = 4;
+
+	protected static final int STATE_NONE = -1;
+	protected static final int STATE_ENABLED_CHECKED = ENABLED | CHECKED;
+	protected static final int STATE_ENABLED_UNCHECKED = ENABLED;
+	protected static final int STATE_ENABLED_TRISTATE = ENABLED | TRISTATE;
+	protected static final int STATE_DISABLED_CHECKED = CHECKED;
+	protected static final int STATE_DISABLED_UNCHECKED = 0;
+	protected static final int STATE_DISABLED_TRISTATE = TRISTATE;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param columns The valid columns.
+	 * @param widget The widget.
+	 */
+	public AbstractCheckBoxCellPaintListener(Widget widget, int... columns) {
+		super(widget, columns);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.tcf.te.ui.swt.listener.AbstractCellPaintListener#getPaintOrigin(org.eclipse.swt.widgets.Event, org.eclipse.swt.graphics.Image)
+	 */
+	@Override
+	protected Point getPaintOrigin(Event event, Image image) {
+		// Determine host platform
+		boolean isWindowsHost = System.getProperty("os.name","").toLowerCase().startsWith("windows"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
+		// Center the image horizontally within the column
+		int x = event.x + (getWidgetWidth(event)/2 - image.getImageData().width / 2);
+		// Center the image vertically within the column
+		int y = isWindowsHost ? event.y : event.y + event.height - (image.getImageData().height + 4);
+		return new Point(x, y);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.tcf.te.ui.swt.listener.AbstractCellPaintListener#getImageToDraw(org.eclipse.swt.widgets.Item, int)
+	 */
+	@Override
+	protected Image getImageToDraw(Item item, int columnIndex) {
+		Assert.isNotNull(item);
+
+		// If the image shall be painted to the current column
+		if (isPaintImageInColumn(columnIndex)) {
+			// Check which image to paint
+			int state = getCheckBoxState(item.getData(), columnIndex);
+			if (state >= 0) {
+				return SWTControlUtil.getCheckBoxImage((state & CHECKED) > 0, (state & TRISTATE) > 0, (state & ENABLED) > 0);
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * Returns the state for the check box.
+	 *
+	 * @param data The associated event data or <code>null</code>:
+	 * @param columnIndex The column index of the current column.
+	 *
+	 * @return The state for the check box.
+	 */
+	protected abstract int getCheckBoxState(Object data, int columnIndex);
+
+}