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+/*
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+ * Copyright (c) 2006-2014 DMDirc Developers
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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 deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * 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 FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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+ * SOFTWARE.
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+ */
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+
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+package com.dmdirc.addons.debug.commands;
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+
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+import com.dmdirc.ClientModule.GlobalConfig;
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+import com.dmdirc.CustomWindow;
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+import com.dmdirc.FrameContainer;
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+import com.dmdirc.addons.debug.Debug;
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+import com.dmdirc.addons.debug.DebugCommand;
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+import com.dmdirc.commandparser.CommandArguments;
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+import com.dmdirc.commandparser.commands.context.CommandContext;
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+import com.dmdirc.events.ClientLineAddedEvent;
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+import com.dmdirc.events.DMDircEvent;
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+import com.dmdirc.interfaces.FrameCloseListener;
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+import com.dmdirc.interfaces.config.AggregateConfigProvider;
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+import com.dmdirc.ui.WindowManager;
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+import com.dmdirc.ui.messages.Styliser;
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+import com.dmdirc.util.URLBuilder;
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+
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+import com.google.common.eventbus.EventBus;
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+import com.google.common.eventbus.Subscribe;
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+
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+import java.lang.reflect.Method;
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+
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+import javax.inject.Inject;
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+import javax.inject.Provider;
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+
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+/**
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+ * Displays events passed on an event bus.
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+ */
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+public class EventBusViewer extends DebugCommand {
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+
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+ private final URLBuilder urlBuilder;
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+ private final AggregateConfigProvider globalConfig;
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+ private final WindowManager windowManager;
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+ private final EventBus globalEventBus;
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+
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+ /**
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+ * Creates a new instance of the command.
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+ *
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+ * @param commandProvider The provider to use to access the main debug command.
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+ * @param globalConfig The global configuration to use for new windows.
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+ * @param urlBuilder The URL builder to use in new windows.
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+ * @param windowManager The manager to register new windows with.
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+ * @param globalEventBus The bus to use when the user specifies the --global flag.
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+ */
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+ @Inject
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+ public EventBusViewer(
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+ final Provider<Debug> commandProvider,
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+ @GlobalConfig final AggregateConfigProvider globalConfig,
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+ final URLBuilder urlBuilder,
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+ final WindowManager windowManager,
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+ final EventBus globalEventBus) {
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+ super(commandProvider);
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+ this.globalConfig = globalConfig;
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+ this.urlBuilder = urlBuilder;
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+ this.windowManager = windowManager;
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+ this.globalEventBus = globalEventBus;
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+ }
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+
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+ @Override
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+ public String getName() {
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+ return "eventbus";
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+ }
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+
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+ @Override
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+ public String getUsage() {
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+ return "[--global] - Shows events being sent on an event bus";
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+ }
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+
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+ @Override
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+ public void execute(final FrameContainer origin,
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+ final CommandArguments args, final CommandContext context) {
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+ final boolean isGlobal = args.getArguments().length > 0
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+ && "--global".equals(args.getArguments()[0]);
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+
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+ final CustomWindow window;
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+ if (isGlobal) {
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+ window = new CustomWindow("Event bus", "Event bus", globalConfig,
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+ urlBuilder, globalEventBus);
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+ windowManager.addWindow(window);
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+ } else {
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+ window = new CustomWindow("Event bus", "Event bus", origin,
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+ urlBuilder);
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+ windowManager.addWindow(origin, window);
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+ }
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+
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+ final EventBus eventBus = isGlobal ? globalEventBus : origin.getEventBus();
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+ final WindowUpdater updater = new WindowUpdater(eventBus, window);
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+ eventBus.register(updater);
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+ window.addCloseListener(updater);
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+ }
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+
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+ /**
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+ * Updates a custom window with details of each event received on an event bus.
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+ */
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+ private static class WindowUpdater implements FrameCloseListener {
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+
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+ private final EventBus eventBus;
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+ private final FrameContainer target;
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+
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+ WindowUpdater(final EventBus eventBus, final FrameContainer target) {
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+ this.eventBus = eventBus;
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+ this.target = target;
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+ }
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+
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+ @Subscribe
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+ public void handleEvent(final DMDircEvent event) {
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+ if (event instanceof ClientLineAddedEvent
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+ && ((ClientLineAddedEvent) event).getFrameContainer() == target) {
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+ // Don't add a line every time we add a line to our output window.
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+ // Things will explode otherwise.
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+ return;
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+ }
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+
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+ final StringBuffer output = new StringBuffer();
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+ output.append(Styliser.CODE_BOLD)
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+ .append(event.getClass().getSimpleName())
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+ .append(Styliser.CODE_BOLD);
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+
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+ for (Method method : event.getClass().getDeclaredMethods()) {
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+ if (method.getName().startsWith("get") && method.getParameterCount() == 0) {
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+ try {
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+ output.append(' ')
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+ .append(Styliser.CODE_UNDERLINE)
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+ .append(method.getName().substring(3))
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+ .append(Styliser.CODE_UNDERLINE)
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+ .append('=')
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+ .append(method.invoke(event).toString());
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+ } catch (ReflectiveOperationException ex) {
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+ // Ignore.
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+ }
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+ }
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+ }
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+
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+ target.addLine(FORMAT_OUTPUT, output.toString());
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+ }
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+
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+ @Override
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+ public void windowClosing(final FrameContainer window) {
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+ eventBus.unregister(this);
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+ }
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+
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+ }
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+}
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