Bug 140538 Can't save by auto when it is preview after create the 2nd parameter
Details: Can't save by auto when it is preview after create the 2nd parameter Step: 1.New a report design. 2.Create the 1st parameter and preview. 3.Create the 2nd parameter and preview. Actual result: After step 2, it is ok. After step 3, if I have not press save button, it will not save by auto.
UI/org.eclipse.birt.report.designer.ui.preview/src/org/eclipse/birt/report/designer/ui/preview/editors/ReportPreviewFormPage.java
provider = super.getProvider();
		}
		return provider;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.part.WorkbenchPart#getAdapter(java.lang.Class)
	 */
	public Object getAdapter(Class adapter) {
		if (adapter.equals(ActionRegistry.class)) {
			return new ActionRegistry();
		}
		return super.getAdapter(adapter);
	}
	public void initialize(FormEditor editor) {
		this.editor = editor;
	}
	public FormEditor getEditor() {
		return editor;
	}
	public IManagedForm getManagedForm() {
		return null;
	}
	public void setActive(boolean active) {
	}
	public boolean isActive() {
		return false;
	}
	public boolean canLeaveThePage() {