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diff --git a/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/ui/eclipse/forms/AbstractFormPart.java b/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/ui/eclipse/forms/AbstractFormPart.java
new file mode 100644
index 000000000..4ce468826
--- /dev/null
+++ b/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/ui/eclipse/forms/AbstractFormPart.java
@@ -0,0 +1,108 @@
+package org.argeo.cms.ui.eclipse.forms;
+/**
+ * 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 org.eclipse.ui.forms.widgets.Section
+ * @since 1.0
+ */
+public abstract class AbstractFormPart implements IFormPart {
+	private IManagedForm managedForm;
+	private boolean dirty = false;
+	private boolean stale = true;
+	/**
+	 * @see org.eclipse.ui.forms.IFormPart#initialize(org.eclipse.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(boolean 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 boolean 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 boolean 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 boolean 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();
+	}
+}