| /******************************************************************************* |
| * Copyright (c) 2004, 2007 Boeing. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Boeing - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.osee.ote.ui; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.osee.ote.ui.internal.prefs.OteConsolePreferences; |
| import org.eclipse.osee.ote.ui.internal.prefs.OteConsolePrefsUtil; |
| import org.eclipse.ui.console.IOConsole; |
| |
| /** |
| * This class provides a way to set the high and low water marks of the console to limit the output buffer. |
| * @author Michael P. Masterson |
| */ |
| public class OteConsole extends IOConsole { |
| /** |
| * Arbitrary number is arbitrary. |
| */ |
| private static final int HIGH_TO_LOW_DIFF = 100; |
| |
| private int limit; |
| private boolean noLimit; |
| |
| /** |
| * @param name |
| * @param consoleType |
| * @param imageDescriptor |
| */ |
| public OteConsole(String name, ImageDescriptor imageDescriptor) { |
| super(name, imageDescriptor); |
| limit = OteConsolePrefsUtil.getInt(OteConsolePreferences.BUFFER_LIMIT); |
| noLimit = OteConsolePrefsUtil.getBoolean(OteConsolePreferences.NO_BUFFER_LIMIT); |
| setWaterMarks(); |
| } |
| |
| /** |
| * When the limit is too small (less than {@value #HIGH_TO_LOW_DIFF}), the low and high mark will be right next to eachother |
| * meaning that characters will be deleted from the beginning at the same speed as they are being written |
| * to the end. Otherwise, every time the limit is hit, the buffer will shrink by {@value #HIGH_TO_LOW_DIFF}. |
| */ |
| private void setWaterMarks() { |
| int lowMark, highMark; |
| |
| if(noLimit) { |
| lowMark = -1; |
| highMark = -1; |
| } else if( limit > HIGH_TO_LOW_DIFF ){ |
| lowMark = limit - HIGH_TO_LOW_DIFF; |
| highMark = limit; |
| } else { |
| lowMark = limit -1; |
| highMark = limit; |
| } |
| |
| setWaterMarks(lowMark, highMark); |
| } |
| |
| /** |
| * @param limit the buffer size limit in bytes |
| */ |
| public void setLimit(int limit) { |
| this.limit = limit; |
| setWaterMarks(); |
| } |
| |
| public void setNoLimit(boolean noLimit) { |
| this.noLimit = noLimit; |
| setWaterMarks(); |
| } |
| |
| } |