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/*
* Copyright 2000-2016 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.ui;
import java.util.Objects;
import com.vaadin.event.FieldEvents.BlurEvent;
import com.vaadin.event.FieldEvents.BlurListener;
import com.vaadin.event.FieldEvents.BlurNotifier;
import com.vaadin.event.FieldEvents.FocusAndBlurServerRpcImpl;
import com.vaadin.event.FieldEvents.FocusEvent;
import com.vaadin.event.FieldEvents.FocusListener;
import com.vaadin.event.FieldEvents.FocusNotifier;
import com.vaadin.shared.Registration;
import com.vaadin.shared.ui.TabIndexState;
import com.vaadin.ui.Component.Focusable;
/**
* An abstract base class for focusable components. Includes API for setting the
* tab index, programmatic focusing, and adding focus and blur listeners.
*
* @since 7.6
* @author Vaadin Ltd
*/
public abstract class AbstractFocusable extends AbstractComponent
implements Focusable, FocusNotifier, BlurNotifier {
protected AbstractFocusable() {
registerRpc(new FocusAndBlurServerRpcImpl(this) {
@Override
protected void fireEvent(Event event) {
AbstractFocusable.this.fireEvent(event);
}
});
}
@Override
public Registration addBlurListener(BlurListener listener) {
addListener(BlurEvent.EVENT_ID, BlurEvent.class, listener,
BlurListener.blurMethod);
return () -> removeListener(BlurEvent.EVENT_ID, BlurEvent.class,
listener);
}
@Override
@Deprecated
public void removeBlurListener(BlurListener listener) {
removeListener(BlurEvent.EVENT_ID, BlurEvent.class, listener);
}
@Override
public Registration addFocusListener(FocusListener listener) {
addListener(FocusEvent.EVENT_ID, FocusEvent.class, listener,
FocusListener.focusMethod);
return () -> removeListener(FocusEvent.EVENT_ID, FocusEvent.class,
listener);
}
@Override
@Deprecated
public void removeFocusListener(FocusListener listener) {
removeListener(FocusEvent.EVENT_ID, FocusEvent.class, listener);
}
@Override
public void focus() {
super.focus();
}
@Override
public int getTabIndex() {
return getState(false).tabIndex;
}
@Override
public void setTabIndex(int tabIndex) {
getState().tabIndex = tabIndex;
}
@Override
protected TabIndexState getState() {
return (TabIndexState) super.getState();
}
@Override
protected TabIndexState getState(boolean markAsDirty) {
return (TabIndexState) super.getState(markAsDirty);
}
}
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