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- /*
- * 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.events.UserErrorEvent;
- import com.dmdirc.interfaces.Connection;
- import com.dmdirc.logger.ErrorLevel;
- 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.text.ParsePosition;
- import java.text.SimpleDateFormat;
- import java.util.Collections;
- import java.util.Date;
- import java.util.Optional;
-
- /**
- * Displays an extended history of a window.
- */
- public class HistoryWindow extends FrameContainer {
-
- private final Path logFile;
- private final DMDircMBassador eventBus;
- private final int numLines;
-
- /**
- * Creates a new HistoryWindow.
- */
- public HistoryWindow(
- final String title,
- final Path logFile,
- final FrameContainer 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.eventBus = eventBus;
- this.numLines = numLines;
-
- initBackBuffer();
- outputLoggingBackBuffer(parent.getConfigManager().getOptionInt("ui", "frameBufferSize"));
- }
-
- @Override
- public Optional<Connection> getConnection() {
- return getParent().flatMap(FrameContainer::getConnection);
- }
-
- @VisibleForTesting
- void outputLoggingBackBuffer(final int limit) {
- try (final ReverseFileReader reader = new ReverseFileReader(logFile)) {
- final Iterable<String> lines = reader.getLines(Math.min(limit, numLines));
- lines.forEach(l -> {
- final ParsePosition pos = new ParsePosition(0);
- final Date date = new SimpleDateFormat("[dd/MM/yyyy HH:mm:ss]").parse(l, pos);
- final String text = l.substring(pos.getIndex()+1);
- addLine(text, date);
- });
- } catch (IOException | SecurityException ex) {
- eventBus.publishAsync(
- new UserErrorEvent(ErrorLevel.MEDIUM, ex, "Unable to read log file.", ""));
- }
- }
-
- }
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