/* * Copyright (c) 2006-2015 DMDirc Developers * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.dmdirc.addons.logging; import com.dmdirc.DMDircMBassador; import com.dmdirc.FrameContainer; import com.dmdirc.interfaces.Connection; import com.dmdirc.interfaces.WindowModel; import com.dmdirc.ui.core.components.WindowComponent; import com.dmdirc.ui.messages.BackBufferFactory; import com.dmdirc.util.io.ReverseFileReader; import com.google.common.annotations.VisibleForTesting; import java.io.IOException; import java.nio.file.Path; import java.util.Collections; import java.util.List; import java.util.Optional; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import static com.dmdirc.util.LogUtils.USER_ERROR; /** * Displays an extended history of a window. */ public class HistoryWindow extends FrameContainer { private static final Logger LOG = LoggerFactory.getLogger(HistoryWindow.class); private final Optional connection; private final Path logFile; private final int numLines; /** * Creates a new HistoryWindow. */ public HistoryWindow( final String title, final Path logFile, final WindowModel parent, final DMDircMBassador eventBus, final BackBufferFactory backBufferFactory, final int numLines) { super(parent, "raw", title, title, parent.getConfigManager(), backBufferFactory, eventBus, Collections.singletonList(WindowComponent.TEXTAREA.getIdentifier())); this.logFile = logFile; this.numLines = numLines; this.connection = parent.getConnection(); initBackBuffer(); outputLoggingBackBuffer(parent.getConfigManager().getOptionInt("ui", "frameBufferSize")); } @Override public Optional getConnection() { return connection; } @VisibleForTesting void outputLoggingBackBuffer(final int limit) { try (final ReverseFileReader reader = new ReverseFileReader(logFile)) { final List lines = reader.getLines(Math.min(limit, numLines)); Collections.reverse(lines); lines.forEach(l -> getEventBus().publishAsync(new HistoricalLineRestoredEvent(this, l))); } catch (IOException | SecurityException ex) { LOG.warn(USER_ERROR, "Unable to read log file.", ex); } } }