--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/ui/forms/AbstractFormPart.d	Sat May 24 05:11:16 2008 +0200
@@ -0,0 +1,126 @@
+/*******************************************************************************
+ * 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.ui.forms.AbstractFormPart;
+
+import dwtx.ui.forms.IFormPart;
+import dwtx.ui.forms.IManagedForm;
+
+import dwt.dwthelper.utils;
+
+/**
+ * AbstractFormPart implements IFormPart interface and can be used as a
+ * convenient base class for concrete form parts. If a method contains
+ * code that must be called, look for instructions to call 'super'
+ * when overriding.
+ *
+ * @see dwtx.ui.forms.widgets.Section
+ * @since 3.0
+ */
+public abstract class AbstractFormPart : IFormPart {
+    private IManagedForm managedForm;
+    private bool dirty = false;
+    private bool stale = true;
+    /**
+     * @see dwtx.ui.forms.IFormPart#initialize(dwtx.ui.forms.IManagedForm)
+     */
+    public void initialize(IManagedForm form) {
+        this.managedForm = form;
+    }
+    /**
+     * Returns the form that manages this part.
+     *
+     * @return the managed form
+     */
+    public IManagedForm getManagedForm() {
+        return managedForm;
+    }
+    /**
+     * Disposes the part. Subclasses should override to release any system
+     * resources.
+     */
+    public void dispose() {
+    }
+    /**
+     * Commits the part. Subclasses should call 'super' when overriding.
+     *
+     * @param onSave
+     *            <code>true</code> if the request to commit has arrived as a
+     *            result of the 'save' action.
+     */
+    public void commit(bool onSave) {
+        dirty = false;
+    }
+    /**
+     * Sets the overall form input. Subclases may elect to override the method
+     * and adjust according to the form input.
+     *
+     * @param input
+     *            the form input object
+     * @return <code>false</code>
+     */
+    public bool setFormInput(Object input) {
+        return false;
+    }
+    /**
+     * Instructs the part to grab keyboard focus.
+     */
+    public void setFocus() {
+    }
+    /**
+     * Refreshes the section after becoming stale (falling behind data in the
+     * model). Subclasses must call 'super' when overriding this method.
+     */
+    public void refresh() {
+        stale = false;
+        // since we have refreshed, any changes we had in the
+        // part are gone and we are not dirty
+        dirty = false;
+    }
+    /**
+     * Marks the part dirty. Subclasses should call this method as a result of
+     * user interaction with the widgets in the section.
+     */
+    public void markDirty() {
+        dirty = true;
+        managedForm.dirtyStateChanged();
+    }
+    /**
+     * Tests whether the part is dirty i.e. its widgets have state that is
+     * newer than the data in the model.
+     *
+     * @return <code>true</code> if the part is dirty, <code>false</code>
+     *         otherwise.
+     */
+    public bool isDirty() {
+        return dirty;
+    }
+    /**
+     * Tests whether the part is stale i.e. its widgets have state that is
+     * older than the data in the model.
+     *
+     * @return <code>true</code> if the part is stale, <code>false</code>
+     *         otherwise.
+     */
+    public bool isStale() {
+        return stale;
+    }
+    /**
+     * Marks the part stale. Subclasses should call this method as a result of
+     * model notification that indicates that the content of the section is no
+     * longer in sync with the model.
+     */
+    public void markStale() {
+        stale = true;
+        managedForm.staleStateChanged();
+    }
+}