diff dwtx/jface/bindings/SchemeEvent.d @ 16:e0f0aaf75edd

PopupDialog, bindings and actions
author Frank Benoit <benoit@tionex.de>
date Tue, 01 Apr 2008 08:00:31 +0200
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/bindings/SchemeEvent.d	Tue Apr 01 08:00:31 2008 +0200
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+/*******************************************************************************
+ * Copyright (c) 2004, 2006 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.bindings.SchemeEvent;
+
+import dwtx.jface.bindings.Scheme;
+
+import dwtx.core.commands.common.AbstractNamedHandleEvent;
+
+import dwt.dwthelper.utils;
+
+/**
+ * An instance of this class describes changes to an instance of
+ * <code>IScheme</code>.
+ * <p>
+ * This class is not intended to be extended by clients.
+ * </p>
+ *
+ * @since 3.1
+ * @see ISchemeListener#schemeChanged(SchemeEvent)
+ */
+public final class SchemeEvent : AbstractNamedHandleEvent {
+
+    /**
+     * The bit used to represent whether the scheme has changed its parent.
+     */
+    private static const int CHANGED_PARENT_ID = LAST_USED_BIT << 1;
+
+    /**
+     * The scheme that has changed; this value is never <code>null</code>.
+     */
+    private const Scheme scheme;
+
+    /**
+     * Creates a new instance of this class.
+     *
+     * @param scheme
+     *            the instance of the interface that changed; must not be
+     *            <code>null</code>.
+     * @param definedChanged
+     *            true, iff the defined property changed.
+     * @param nameChanged
+     *            true, iff the name property changed.
+     * @param descriptionChanged
+     *            <code>true</code> if the description property changed;
+     *            <code>false</code> otherwise.
+     * @param parentIdChanged
+     *            true, iff the parentId property changed.
+     */
+    public this(Scheme scheme, bool definedChanged,
+            bool nameChanged, bool descriptionChanged,
+            bool parentIdChanged) {
+        super(definedChanged, descriptionChanged, nameChanged);
+
+        if (scheme is null) {
+            throw new NullPointerException();
+        }
+        this.scheme = scheme;
+
+        if (parentIdChanged) {
+            changedValues |= CHANGED_PARENT_ID;
+        }
+    }
+
+    /**
+     * Returns the instance of the scheme that changed.
+     *
+     * @return the instance of the scheme that changed. Guaranteed not to be
+     *         <code>null</code>.
+     */
+    public final Scheme getScheme() {
+        return scheme;
+    }
+
+    /**
+     * Returns whether or not the parentId property changed.
+     *
+     * @return true, iff the parentId property changed.
+     */
+    public final bool isParentIdChanged() {
+        return ((changedValues & CHANGED_PARENT_ID) !is 0);
+    }
+}