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Vaadin is a web application framework for Rich Internet Applications (RIA).
Vaadin enables easy development and maintenance of fast and secure rich web
applications with a stunning look and feel and a wide browser support.
It features a server-side architecture with the majority of the logic running
on the server. Ajax technology is used at the browser-side to ensure a rich
and interactive user experience.
/*
* Copyright 2011 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.terminal.gwt.client.ui;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.event.dom.client.HasBlurHandlers;
import com.google.gwt.event.dom.client.HasFocusHandlers;
import com.google.gwt.event.dom.client.HasKeyDownHandlers;
import com.google.gwt.event.dom.client.HasKeyPressHandlers;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.event.dom.client.KeyDownHandler;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.impl.FocusImpl;
import com.vaadin.terminal.gwt.client.Focusable;
/**
* Compared to FocusPanel in GWT this panel does not support eg. accesskeys, but
* is simpler by its dom hierarchy nor supports focusing via java api.
*/
public class SimpleFocusablePanel extends SimplePanel implements
HasFocusHandlers, HasBlurHandlers, HasKeyDownHandlers,
HasKeyPressHandlers, Focusable {
public SimpleFocusablePanel() {
// make focusable, as we don't need access key magic we don't need to
// use FocusImpl.createFocusable
setTabIndex(0);
}
public HandlerRegistration addFocusHandler(FocusHandler handler) {
return addDomHandler(handler, FocusEvent.getType());
}
public HandlerRegistration addBlurHandler(BlurHandler handler) {
return addDomHandler(handler, BlurEvent.getType());
}
public HandlerRegistration addKeyDownHandler(KeyDownHandler handler) {
return addDomHandler(handler, KeyDownEvent.getType());
}
public HandlerRegistration addKeyPressHandler(KeyPressHandler handler) {
return addDomHandler(handler, KeyPressEvent.getType());
}
public HandlerRegistration addKeyUpHandler(KeyUpHandler handler) {
return addDomHandler(handler, KeyUpEvent.getType());
}
public void setFocus(boolean focus) {
if (focus) {
FocusImpl.getFocusImplForPanel().focus(getElement());
} else {
FocusImpl.getFocusImplForPanel().blur(getElement());
}
}
public void focus() {
setFocus(true);
}
public void setTabIndex(int tabIndex) {
getElement().setTabIndex(tabIndex);
}
}