Example usage for com.google.gwt.aria.client Property LABELLEDBY

Introduction

In this page you can find the example usage for com.google.gwt.aria.client Property LABELLEDBY.

Prototype

Attribute LABELLEDBY

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Usage

From source file:net.sf.mmm.client.ui.gwt.widgets.LabelWidget.java

License:Apache License

/**
 * This method sets the {@link Widget} labelled by this {@link LabelWidget}. You should always associate the
 * input widget with a {@link LabelWidget} via this method for advanced usability and
 * {@link net.sf.mmm.util.lang.api.concern.Accessibility}. <br>
 * <b>ATTENTION:</b><br>
 * This method creates a bidirectional connection of this {@link LabelWidget} and the given
 * <code>labelledWidget</code> via {@link String} attributes pointing to each others IDs. If an ID is
 * changed afterwards this connection will break. If you are using this classes directly and not via
 * <code>UiWidgets</code> you have to take care of this and re-invoke this method in case an ID changes.
 * /*from w  w w . j  a  va  2 s  .  c  om*/
 * @see LabelElement#setHtmlFor(String)
 * 
 * @param labelledWidget is the {@link Widget} labelled by this {@link LabelWidget}.
 */
public void setLabelledWidget(Widget labelledWidget) {

    GwtUtil gwtUtil = GwtUtil.getInstance();
    String widgetId = gwtUtil.getId(labelledWidget);
    getLabelElement().setHtmlFor(widgetId);
    String labelId = gwtUtil.getId(this);
    Property.LABELLEDBY.set(labelledWidget.getElement(), Id.of(labelId));
}

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