93 lines
2.6 KiB
Java
93 lines
2.6 KiB
Java
/*
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* Copyright (c) 2009-2011 Graham Edgecombe.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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package com.loomcom.symon.jterminal;
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/**
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* A {@link TerminalModel} which implements some common behaviour.
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* @author Graham Edgecombe
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*/
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public abstract class AbstractTerminalModel implements TerminalModel {
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@Override
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public void clear() {
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int rows = getRows(), columns = getColumns();
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for (int column = 0; column < columns; column++) {
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for (int row = 0; row < rows; row++) {
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setCell(column, row, null);
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}
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}
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}
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@Override
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public void moveCursorBack(int n) {
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if (n < 0) {
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throw new IllegalArgumentException("n must be positive");
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}
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int cursorColumn = getCursorColumn() - n;
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if (cursorColumn < 0) {
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cursorColumn = 0;
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}
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setCursorColumn(cursorColumn);
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}
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@Override
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public void moveCursorForward(int n) {
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if (n < 0) {
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throw new IllegalArgumentException("n must be positive");
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}
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int columns = getColumns();
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int cursorColumn = getCursorColumn() + n;
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if (cursorColumn >= columns) {
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cursorColumn = columns - 1;
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}
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setCursorColumn(cursorColumn);
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}
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@Override
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public void moveCursorDown(int n) {
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if (n < 0) {
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throw new IllegalArgumentException("n must be positive");
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}
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int bufferSize = getBufferSize();
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int cursorRow = getCursorRow() + n;
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if (cursorRow >= bufferSize) {
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cursorRow = bufferSize - 1;
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}
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setCursorRow(cursorRow);
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}
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@Override
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public void moveCursorUp(int n) {
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if (n < 0) {
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throw new IllegalArgumentException("n must be positive");
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}
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int cursorRow = getCursorRow() - n;
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if (cursorRow < 0) {
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cursorRow = 0;
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}
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setCursorRow(cursorRow);
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}
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}
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