-/*
- * This file is part of lanterna (http://code.google.com/p/lanterna/).
- *
- * lanterna is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- * Copyright (C) 2010-2015 Martin
- */
-package com.googlecode.lanterna.terminal;
-
-import com.googlecode.lanterna.TerminalSize;
-import com.googlecode.lanterna.graphics.TextGraphics;
-
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Containing a some very fundamental functionality that should be common (and usable) to all terminal implementations.
- * All the Terminal implementers within Lanterna extends from this class.
- *
- * @author Martin
- */
-public abstract class AbstractTerminal implements Terminal {
-
- private final List<ResizeListener> resizeListeners;
- private TerminalSize lastKnownSize;
-
- protected AbstractTerminal() {
- this.resizeListeners = new ArrayList<ResizeListener>();
- this.lastKnownSize = null;
- }
-
- @Override
- public void addResizeListener(ResizeListener listener) {
- if (listener != null) {
- resizeListeners.add(listener);
- }
- }
-
- @Override
- public void removeResizeListener(ResizeListener listener) {
- if (listener != null) {
- resizeListeners.remove(listener);
- }
- }
-
- /**
- * Call this method when the terminal has been resized or the initial size of the terminal has been discovered. It
- * will trigger all resize listeners, but only if the size has changed from before.
- *
- * @param columns Number of columns in the new size
- * @param rows Number of rows in the new size
- */
- protected synchronized void onResized(int columns, int rows) {
- TerminalSize newSize = new TerminalSize(columns, rows);
- if (lastKnownSize == null || !lastKnownSize.equals(newSize)) {
- lastKnownSize = newSize;
- for (ResizeListener resizeListener : resizeListeners) {
- resizeListener.onResized(this, lastKnownSize);
- }
- }
- }
-
- @Override
- public TextGraphics newTextGraphics() throws IOException {
- return new TerminalTextGraphics(this);
- }
-}