/*
* Ext GWT 2.2.4 - Ext for GWT
* Copyright(c) 2007-2010, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
package com.extjs.gxt.ui.client.aria;
import com.extjs.gxt.ui.client.event.PreviewEvent;
import com.extjs.gxt.ui.client.widget.Component;
import com.extjs.gxt.ui.client.widget.TabItem;
import com.extjs.gxt.ui.client.widget.TabPanel;
import com.extjs.gxt.ui.client.widget.TabItem.HeaderItem;
import com.google.gwt.user.client.ui.Widget;
public class TabPanelHandler extends FocusHandler {
@Override
public boolean canHandleKeyPress(Component component, PreviewEvent pe) {
// stop default handler
if (component instanceof TabPanel || component instanceof TabItem || component instanceof HeaderItem) {
return true;
}
return false;
}
@Override
public void onTab(Component component, PreviewEvent pe) {
if (!isManaged()) return;
if (component instanceof TabItem) {
pe.preventDefault();
if (pe.isShiftKey()) {
focusPreviousWidget(component.getParent());
} else {
focusNextWidget(component.getParent());
}
} else if (component instanceof HeaderItem) {
pe.preventDefault();
if (pe.isShiftKey()) {
focusPreviousWidget(component.getParent().getParent());
} else {
focusNextWidget(component.getParent().getParent());
}
}
}
public void onEscape(Component component, PreviewEvent pe) {
if (!isManaged()) return;
Widget p = component.getParent();
if (p != null) {
pe.stopEvent();
if (p instanceof TabItem) {
stepOut(((TabItem) p).getTabPanel());
} else {
stepOut(component);
}
}
}
@Override
public void onEnter(Component component, PreviewEvent pe) {
if (!isManaged()) return;
if (component instanceof HeaderItem) {
pe.preventDefault();
TabItem item = (TabItem) component.getParent();
stepInto(item, pe, true);
} else if (component instanceof TabPanel) {
pe.preventDefault();
TabPanel panel = (TabPanel) component;
TabItem item = panel.getSelectedItem();
if (item != null && item.getItemCount() > 0) {
item.getItem(0).focus();
}
}
}
}