| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.hadoop.hbase.hbtop.screen; |
| |
| import edu.umd.cs.findbugs.annotations.Nullable; |
| import java.util.Objects; |
| import org.apache.hadoop.hbase.hbtop.terminal.KeyPress; |
| import org.apache.hadoop.hbase.hbtop.terminal.Terminal; |
| import org.apache.hadoop.hbase.hbtop.terminal.TerminalPrinter; |
| import org.apache.hadoop.hbase.hbtop.terminal.TerminalSize; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| |
| /** |
| * An abstract class for {@link ScreenView} that has the common useful methods and the default |
| * implementations for the abstract methods. |
| */ |
| @InterfaceAudience.Private |
| public abstract class AbstractScreenView implements ScreenView { |
| |
| private final Screen screen; |
| private final Terminal terminal; |
| |
| public AbstractScreenView(Screen screen, Terminal terminal) { |
| this.screen = Objects.requireNonNull(screen); |
| this.terminal = Objects.requireNonNull(terminal); |
| } |
| |
| @Override |
| public void init() { |
| } |
| |
| @Override |
| public ScreenView handleKeyPress(KeyPress keyPress) { |
| return this; |
| } |
| |
| @Override |
| public ScreenView handleTimer() { |
| return this; |
| } |
| |
| protected Screen getScreen() { |
| return screen; |
| } |
| |
| protected Terminal getTerminal() { |
| return terminal; |
| } |
| |
| protected void setTimer(long delay) { |
| screen.setTimer(delay); |
| } |
| |
| protected void cancelTimer() { |
| screen.cancelTimer(); |
| } |
| |
| protected TerminalPrinter getTerminalPrinter(int startRow) { |
| return terminal.getTerminalPrinter(startRow); |
| } |
| |
| @Nullable |
| protected TerminalSize getTerminalSize() { |
| return terminal.getSize(); |
| } |
| |
| @Nullable |
| protected TerminalSize doResizeIfNecessary() { |
| return terminal.doResizeIfNecessary(); |
| } |
| |
| public void clearTerminal() { |
| terminal.clear(); |
| } |
| |
| public void refreshTerminal() { |
| terminal.refresh(); |
| } |
| |
| public void hideCursor() { |
| terminal.hideCursor(); |
| } |
| |
| public void setCursorPosition(int column, int row) { |
| terminal.setCursorPosition(column, row); |
| } |
| } |