1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950 |
- /*
- @VaadinApache2LicenseForJavaFiles@
- */
- package com.vaadin.terminal.gwt.client.ui;
-
- import com.google.gwt.user.client.Element;
- import com.google.gwt.user.client.ui.Widget;
- import com.vaadin.terminal.gwt.client.ComponentLocator;
-
- /**
- * Interface implemented by {@link Widget}s which can provide identifiers for at
- * least one element inside the component. Used by {@link ComponentLocator}.
- *
- */
- public interface SubPartAware {
-
- /**
- * Locates an element inside a component using the identifier provided in
- * {@code subPart}. The {@code subPart} identifier is component specific and
- * may be any string of characters, numbers, space characters and brackets.
- *
- * @param subPart
- * The identifier for the element inside the component
- * @return The element identified by subPart or null if the element could
- * not be found.
- */
- Element getSubPartElement(String subPart);
-
- /**
- * Provides an identifier that identifies the element within the component.
- * The {@code subElement} is a part of the component and must never be null.
- * <p>
- * <b>Note!</b>
- * {@code getSubPartElement(getSubPartName(element)) == element} is <i>not
- * always</i> true. A component can choose to provide a more generic
- * identifier for any given element if the results of all interactions with
- * {@code subElement} are the same as interactions with the element
- * identified by the return value. For example a button can return an
- * identifier for the root element even though a DIV inside the button was
- * passed as {@code subElement} because interactions with the DIV and the
- * root button element produce the same result.
- *
- * @param subElement
- * The element the identifier string should uniquely identify
- * @return An identifier that uniquely identifies {@code subElement} or null
- * if no identifier could be provided.
- */
- String getSubPartName(Element subElement);
-
- }
|