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/*
* Copyright 2000-2018 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.event;
import com.vaadin.ui.Component.Focusable;
/**
* A ready-made {@link ShortcutListener} that focuses the given
* {@link Focusable} (usually a {@link Field}) when the keyboard shortcut is
* invoked.
*
* @author Vaadin Ltd
* @since 8.7
*/
public class FocusShortcut extends ShortcutListener {
protected Focusable focusable;
/**
* Creates a keyboard shortcut for focusing the given {@link Focusable}
* using the shorthand notation defined in {@link ShortcutAction}.
*
* @param focusable
* to focused when the shortcut is invoked
* @param shorthandCaption
* caption with keycode and modifiers indicated
*/
public FocusShortcut(Focusable focusable, String shorthandCaption) {
super(shorthandCaption);
this.focusable = focusable;
}
/**
* Creates a keyboard shortcut for focusing the given {@link Focusable}.
*
* @param focusable
* to focused when the shortcut is invoked
* @param keyCode
* keycode that invokes the shortcut
* @param modifiers
* modifiers required to invoke the shortcut
*/
public FocusShortcut(Focusable focusable, int keyCode, int... modifiers) {
super(null, keyCode, modifiers);
this.focusable = focusable;
}
/**
* Creates a keyboard shortcut for focusing the given {@link Focusable}.
*
* @param focusable
* to focused when the shortcut is invoked
* @param keyCode
* keycode that invokes the shortcut
*/
public FocusShortcut(Focusable focusable, int keyCode) {
this(focusable, keyCode, null);
}
@Override
public void handleAction(Object sender, Object target) {
focusable.focus();
}
}
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