/
GridKeyDownEvent.java
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/
GridKeyDownEvent.java
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/*
* Copyright 2000-2014 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.client.widget.grid.events;
import com.google.gwt.dom.client.BrowserEvents;
import com.google.gwt.event.dom.client.KeyCodes;
import com.vaadin.client.widget.grid.CellReference;
import com.vaadin.client.widget.grid.events.AbstractGridKeyEventHandler.GridKeyDownHandler;
import com.vaadin.client.widgets.Grid;
import com.vaadin.client.widgets.Grid.AbstractGridKeyEvent;
import com.vaadin.shared.ui.grid.GridConstants.Section;
/**
* Represents native key down event in Grid.
*
* @since 7.4
* @author Vaadin Ltd
*/
public class GridKeyDownEvent extends AbstractGridKeyEvent<GridKeyDownHandler> {
public GridKeyDownEvent(Grid<?> grid, CellReference<?> targetCell) {
super(grid, targetCell);
}
@Override
protected void doDispatch(GridKeyDownHandler handler, Section section) {
if ((section == Section.BODY && handler instanceof BodyKeyDownHandler)
|| (section == Section.HEADER && handler instanceof HeaderKeyDownHandler)
|| (section == Section.FOOTER && handler instanceof FooterKeyDownHandler)) {
handler.onKeyDown(this);
}
}
@Override
protected String getBrowserEventType() {
return BrowserEvents.KEYDOWN;
}
/**
* Does the key code represent an arrow key?
*
* @param keyCode
* the key code
* @return if it is an arrow key code
*/
public static boolean isArrow(int keyCode) {
switch (keyCode) {
case KeyCodes.KEY_DOWN:
case KeyCodes.KEY_RIGHT:
case KeyCodes.KEY_UP:
case KeyCodes.KEY_LEFT:
return true;
default:
return false;
}
}
/**
* Gets the native key code. These key codes are enumerated in the
* {@link KeyCodes} class.
*
* @return the key code
*/
public int getNativeKeyCode() {
return getNativeEvent().getKeyCode();
}
/**
* Is this a key down arrow?
*
* @return whether this is a down arrow key event
*/
public boolean isDownArrow() {
return getNativeKeyCode() == KeyCodes.KEY_DOWN;
}
/**
* Is this a left arrow?
*
* @return whether this is a left arrow key event
*/
public boolean isLeftArrow() {
return getNativeKeyCode() == KeyCodes.KEY_LEFT;
}
/**
* Is this a right arrow?
*
* @return whether this is a right arrow key event
*/
public boolean isRightArrow() {
return getNativeKeyCode() == KeyCodes.KEY_RIGHT;
}
/**
* Is this a up arrow?
*
* @return whether this is a right arrow key event
*/
public boolean isUpArrow() {
return getNativeKeyCode() == KeyCodes.KEY_UP;
}
@Override
public String toDebugString() {
return super.toDebugString() + "[" + getNativeKeyCode() + "]";
}
}