/*
* 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.GXT;
import com.extjs.gxt.ui.client.core.El;
import com.extjs.gxt.ui.client.core.XDOM;
import com.extjs.gxt.ui.client.event.PreviewEvent;
import com.extjs.gxt.ui.client.widget.Component;
import com.extjs.gxt.ui.client.widget.Container;
import com.extjs.gxt.ui.client.widget.tips.ToolTip;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.Widget;
public class DefaultHandler extends FocusHandler {
private Element stepout;
@Override
public boolean canHandleKeyPress(Component component, PreviewEvent pe) {
return true;
}
@Override
public void onEnter(final Component component, final PreviewEvent pe) {
if (!isManaged()) return;
Timer t = new Timer() {
@Override
public void run() {
stepInto(component, pe, true);
}
};
t.schedule(200);
}
@Override
public void onEscape(Component component, PreviewEvent pe) {
if (!isManaged()) return;
ToolTip tip = component.getToolTip();
if (tip != null && tip.isVisible()) {
return;
}
if (component.getFocusSupport().isIgnore()) {
component.getFocusSupport().setIgnore(false);
return;
}
stepOut(component);
}
@SuppressWarnings("rawtypes")
@Override
public void onTab(Component component, PreviewEvent pe) {
if (!isManaged()) return;
if (component.getFocusSupport().isIgnore()) {
return;
}
if (pe.isShiftKey()) {
if (focusPreviousWidget(component)) {
pe.stopEvent();
} else {
Widget w = component.getParent();
while (w != null) {
if (w instanceof RootPanel) {
// do nothing leave app
return;
} else if (w instanceof Component){
Component c = (Component)w;
if (c.getFocusSupport().isIgnore()) {
w = w.getParent();
} else {
w = null;
pe.stopEvent();
}
}
}
}
} else {
if (focusNextWidget(component)) {
pe.stopEvent();
} else {
if (!(component.getParent() instanceof RootPanel)) {
Widget p = component.getParent();
if (p instanceof Container) {
Container c = (Container)p;
if (c.getItemCount() == 1) {
if (c .getParent() instanceof RootPanel) {
pe.stopEvent();
onStepOutApp();
return;
}
}
}
pe.stopEvent();
} else {
pe.stopEvent();
onStepOutApp();
}
}
}
}
protected void onStepOutApp() {
if (FocusManager.get().isInsertExitFocusElement()) {
if (stepout == null) {
stepout = Document.get().createElement("div");
stepout.setTitle(GXT.MESSAGES.aria_leaveApplication());
stepout.getStyle().setProperty("outline", "none");
El.fly(stepout).setTabIndex(0);
Element body = XDOM.getBody();
body.appendChild(stepout);
}
El.fly(stepout).focus();
}
}
}