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- /*
- * Copyright (c) 2006-2017 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.FrameContainer;
- import com.dmdirc.interfaces.Connection;
- import com.dmdirc.events.eventbus.EventBus;
- 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> 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 EventBus eventBus,
- final BackBufferFactory backBufferFactory,
- final int numLines) {
- super("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<Connection> getConnection() {
- return connection;
- }
-
- @VisibleForTesting
- void outputLoggingBackBuffer(final int limit) {
- try (final ReverseFileReader reader = new ReverseFileReader(logFile)) {
- final List<String> 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);
- }
- }
-
- }
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