/*******************************************************************************
 * Copyright (c) 2000, 2013 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.debug.internal.ui.views.console;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.ILaunchManager;
import org.eclipse.debug.core.commands.ITerminateHandler;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.debug.core.model.ITerminate;
import org.eclipse.debug.internal.ui.DebugPluginImages;
import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
import org.eclipse.debug.internal.ui.IInternalDebugUIConstants;
import org.eclipse.debug.internal.ui.commands.actions.DebugCommandService;
import org.eclipse.jface.action.Action;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.texteditor.IUpdate;

/**
 * ConsoleTerminateAction
 */
public class ConsoleTerminateAction extends Action implements IUpdate {

	private ProcessConsole fConsole;
	private final IWorkbenchWindow fWindow;

	/**
	 * Creates a terminate action for the console
	 * @param window the window
	 * @param console the console
	 */
	public ConsoleTerminateAction(IWorkbenchWindow window, ProcessConsole console) {
		super(ConsoleMessages.ConsoleTerminateAction_0);
		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IDebugHelpContextIds.CONSOLE_TERMINATE_ACTION);
		fConsole = console;
		fWindow = window;
		setToolTipText(ConsoleMessages.ConsoleTerminateAction_1);
		setImageDescriptor(DebugPluginImages.getImageDescriptor(IInternalDebugUIConstants.IMG_LCL_TERMINATE));
		setDisabledImageDescriptor(DebugPluginImages.getImageDescriptor(IInternalDebugUIConstants.IMG_DLCL_TERMINATE));
		setHoverImageDescriptor(DebugPluginImages.getImageDescriptor(IInternalDebugUIConstants.IMG_LCL_TERMINATE));
		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IDebugHelpContextIds.CONSOLE_TERMINATE_ACTION);
		update();
	}

	@Override
	public void update() {
		IProcess process = fConsole.getProcess();
		setEnabled(process.canTerminate());
	}

	@Override
	public void run() {
		IProcess process = fConsole.getProcess();
		List<ITerminate> targets = collectTargets(process);
		targets.add(process);
		DebugCommandService service = DebugCommandService.getService(fWindow);
		service.executeCommand(ITerminateHandler.class, targets.toArray(), null);
	}

	/**
	 * Collects targets associated with a process.
	 *
	 * @param process the process to collect {@link IDebugTarget}s for
	 * @return associated targets
	 */
	private List<ITerminate> collectTargets(IProcess process) {
		ILaunchManager launchManager = DebugPlugin.getDefault().getLaunchManager();
		List<ITerminate> targets = new ArrayList<>();
		for (ILaunch launch : launchManager.getLaunches()) {
			for (IProcess proc : launch.getProcesses()) {
				if (proc.equals(process)) {
					IDebugTarget[] debugTargets = launch.getDebugTargets();
					Collections.addAll(targets, debugTargets);
					return targets; // all possible targets have been terminated for the launch.
				}
			}
		}
		return targets;
	}

	public void dispose() {
		fConsole = null;
	}

}
