/* ###
 * IP: GHIDRA
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package ghidra.framework.plugintool;

import static ghidra.framework.model.ToolTemplate.*;

import java.awt.*;
import java.awt.event.KeyEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.net.URL;
import java.util.*;
import java.util.List;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Function;

import javax.swing.*;

import org.jdom2.Element;

import docking.*;
import docking.action.*;
import docking.action.builder.ActionBuilder;
import docking.actions.PopupActionProvider;
import docking.actions.ToolActions;
import docking.framework.AboutDialog;
import docking.framework.ApplicationInformationDisplayFactory;
import docking.options.OptionsService;
import docking.tool.ToolConstants;
import docking.tool.util.DockingToolConstants;
import docking.util.image.ToolIconURL;
import docking.widgets.OptionDialog;
import ghidra.framework.OperatingSystem;
import ghidra.framework.Platform;
import ghidra.framework.cmd.BackgroundCommand;
import ghidra.framework.cmd.Command;
import ghidra.framework.main.AppInfo;
import ghidra.framework.main.UserAgreementDialog;
import ghidra.framework.model.*;
import ghidra.framework.options.*;
import ghidra.framework.plugintool.dialog.ManagePluginsDialog;
import ghidra.framework.plugintool.mgr.*;
import ghidra.framework.plugintool.util.*;
import ghidra.framework.project.ProjectDataService;
import ghidra.framework.project.extensions.ExtensionTableDialog;
import ghidra.util.*;
import ghidra.util.exception.CancelledException;
import ghidra.util.task.*;
import help.Help;
import help.HelpService;

/**
 * Base class that is a container to manage plugins and their actions, and to coordinate the
 * firing of plugin events and tool events. A PluginTool may have visible components supplied by
 * <pre>ComponentProviders </pre>. These components may be docked within the tool, or moved
 * out into their own windows.
 *
 * <p>Plugins normally add actions via {@link #addAction(DockingActionIf)}.   There is also
 * an alternate method for getting actions to appear in the popup context menu (see
 * {@link #addPopupActionProvider(PopupActionProvider)}).   The popup listener mechanism is generally not
 * needed and should only be used in special circumstances (see {@link PopupActionProvider}).
 *
 * <p>The PluginTool also manages tasks that run in the background, and options used by the plugins.
 *
 */
public abstract class PluginTool extends AbstractDockingTool {

	/**
	 * Name of the property for the tool name.
	 */
	public final static String TOOL_NAME_PROPERTY = "ToolName";
	/**
	 * Name of the property for the tool icon.
	 */
	public final static String ICON_PROPERTY_NAME = "Icon";
	/**
	 * Name of the property for the description of the tool.
	 */
	public final static String DESCRIPTION_PROPERTY_NAME = "Description";
	/**
	 * Name of the property for the number of plugins the tool has.
	 */
	public final static String PLUGIN_COUNT_PROPERTY_NAME = "PluginCount";

	private static final String DOCKING_WINDOWS_ON_TOP = "Docking Windows On Top";

	private static final String SAVE_DIALOG_TITLE = "Save Tool - Possible Conflict";

	private ProjectManager projectManager;
	private Project project;
	private String instanceName = "";
	protected String toolName;
	private String fullName;
	private String subTitle;

	private ServiceManager serviceMgr;
	private OptionsManager optionsMgr;
	private PluginManager pluginMgr;
	private EventManager eventMgr;
	private DialogManager dialogMgr;
	private PropertyChangeSupport propertyChangeMgr;
	private ToolTaskManager taskMgr;
	private Set<TaskListener> executingTaskListeners = Collections.synchronizedSet(new HashSet<>());

	private OptionsChangeListener optionsListener = new ToolOptionsListener();
	protected ManagePluginsDialog manageDialog;

	protected ToolIconURL iconURL = new ToolIconURL("view_detailed.png");

	private ToolServices toolServices;

	private boolean isConfigurable = true;
	protected boolean isDisposed = false;
	private boolean restoringDataState;

	/**
	 * Construct a new PluginTool.
	 *
	 * @param project project that contains this tool
	 * @param template the template from which to load this tool
	 */
	public PluginTool(Project project, ToolTemplate template) {
		this(project, project.getProjectManager(), project.getToolServices(), template.getName(),
			true, true, false);

		setIconURL(template.getIconURL());

		boolean hasErrors = restoreFromXml(template.getToolElement());
		if (!hasErrors) {
			setConfigChanged(false);
		}
		optionsMgr.validateOptions();
	}

	/**
	 * Construct a new PluginTool.
	 *
	 * @param project project that contains the tool
	 * @param name the name of the tool
	 * @param isDockable true if the tool contains components that can be docked
	 * @param hasStatus true if the tool should display a status component
	 * @param isModal true if the tool is modal, meaning that while this tool is visible,
	 *        no other tool or dialog in Ghidra can have focus
	 */
	public PluginTool(Project project, String name, boolean isDockable, boolean hasStatus,
			boolean isModal) {
		this(project, project.getProjectManager(), project.getToolServices(), name, isDockable,
			hasStatus, isModal);
	}

	public PluginTool(Project project, ProjectManager projectManager, ToolServices toolServices,
			String name, boolean isDockable, boolean hasStatus, boolean isModal) {
		this.project = project;
		this.projectManager = projectManager;
		this.toolServices = toolServices == null ? new ToolServicesAdapter() : toolServices;

		propertyChangeMgr = new PropertyChangeSupport(this);
		optionsMgr = new OptionsManager(this);
		winMgr = createDockingWindowManager(isDockable, hasStatus, isModal);
		toolActions = new ToolActions(this, new ActionToGuiHelper(winMgr));
		taskMgr = new ToolTaskManager(this);
		setToolOptionsHelpLocation();
		winMgr.addStatusItem(taskMgr.getMonitorComponent(), false, true);
		winMgr.removeStatusItem(taskMgr.getMonitorComponent());
		eventMgr = new EventManager(this);
		serviceMgr = new ServiceManager();
		installServices();
		pluginMgr = new PluginManager(this, serviceMgr, createPluginsConfigurations());
		dialogMgr = new DialogManager(this);
		initActions();
		initOptions();

		setToolName(name);

		PluginToolMacQuitHandler.install(this);
		PluginToolMacAboutHandler.install(winMgr);

		installHomeButton();
	}

	protected PluginTool() {
		// non-public constructor for stub subclasses
	}

	protected PluginsConfiguration createPluginsConfigurations() {
		return new DefaultPluginsConfiguration();
	}

	public PluginsConfiguration getPluginsConfiguration() {
		return pluginMgr.getPluginsConfiguration();
	}

	/**
	 * This method exists here, as opposed to inline in the constructor, so that subclasses can
	 * alter the behavior of the DockingWindowManager construction.
	 *
	 * @param isDockable true if the tool contains components that can be
	 * docked
	 * @param hasStatus true if the tool should display a status component
	 * @param isModal true if the tool is modal, meaning that while this tool
	 * is visible, no other tool or dialog in Ghidra can have focus
	 * @return a new DockingWindowManager
	 */
	protected DockingWindowManager createDockingWindowManager(boolean isDockable, boolean hasStatus,
			boolean isModal) {

		List<Image> windowIcons = ApplicationInformationDisplayFactory.getWindowIcons();
		DockingWindowManager newManager =
			new DockingWindowManager(this, windowIcons, isModal, isDockable, hasStatus, null);
		return newManager;
	}

	protected void installHomeButton() {

		Icon homeIcon = ApplicationInformationDisplayFactory.getHomeIcon();
		if (homeIcon == null) {
			Msg.debug(this,
				"If you would like a button to show the Front End, then set the home icon");
			return;
		}

		Runnable callback = ApplicationInformationDisplayFactory.getHomeCallback();
		winMgr.setHomeButton(homeIcon, callback);
	}

	/**
	 * Loads all application-level utility classes into this tool.   This should only be called
	 * by tools that represent the global application tool and not for sub-tools.
	 */
	protected void installUtilityPlugins() {

		try {
			checkedRunSwingNow(() -> {
				try {
					pluginMgr.installUtilityPlugins();
				}
				finally {
					setConfigChanged(true);
				}
			}, PluginException.class);
		}
		catch (PluginException e) {
			Msg.showError(this, null, "Error Adding Utility Plugins",
				"Unexpected exception adding application utility plugins", e);
		}
	}

	/**
	 * Placeholder for subclasses to get a chance to install actions before plugins.
	 *
	 */
	protected void initActions() {
		// placeholder
	}

	private void setDefaultOptionValues() {
		Options toolOptions = optionsMgr.getOptions(ToolConstants.TOOL_OPTIONS);
		boolean windowsOnTop = toolOptions.getBoolean(DOCKING_WINDOWS_ON_TOP, false);
		winMgr.setWindowsOnTop(windowsOnTop);
	}

	private void initOptions() {
		ToolOptions toolOptions = optionsMgr.getOptions(ToolConstants.TOOL_OPTIONS);
		toolOptions.registerOption(DOCKING_WINDOWS_ON_TOP, false, null,
			"Determines whether a docked window will always be shown on " +
				"top of its parent window.");

		// we must call this before the init work below to make sure that the options object
		// we use has been created
		setDefaultOptionValues();

		toolOptions.addOptionsChangeListener(optionsListener);

		serviceMgr.addService(OptionsService.class, optionsMgr);
	}

	protected void optionsChanged(Options options, String name, Object oldValue, Object newValue) {
		if (name.equals(DOCKING_WINDOWS_ON_TOP)) {
			winMgr.setWindowsOnTop(((Boolean) newValue).booleanValue());
		}
	}

	/**
	 * Set the Tool option (GhidraOptions.OPTION_DOCKING_WINDOWS_ON_TOP)
	 * for whether a docked window will always be shown on top of its parent window.
	 * @param b true means that the docked window will always appear on top of its
	 * parent window; false means to allow the docked window to be "hidden" under its
	 * parent dialog
	 */
	public void setWindowsOnTop(boolean b) {
		winMgr.setWindowsOnTop(b);
	}

	/**
	 * Return the value of the Tool option (GhidraOptions.OPTION_DOCKING_WINDOWS_ON_TOP)
	 * for whether docked windows will always be shown on top of their parent windows.
	 * @return value of the Tool option, GhidraOptions.OPTION_DOCKING_WINDOWS_ON_TOP
	 */
	public boolean isWindowsOnTop() {
		return winMgr.isWindowsOnTop();
	}

	/**
	 * Returns the manage plugins dialog that is currently
	 * being used.
	 * @return the current manage plugins dialog
	 */
	public ManagePluginsDialog getManagePluginsDialog() {
		return manageDialog;
	}

	/**
	 * Displays the manage plugins dialog.
	 * @param addSaveActions if true show save actions
	 * @param isNewTool true if creating a new tool
	 */
	public void showConfig(boolean addSaveActions, boolean isNewTool) {
		if (manageDialog != null) {
			manageDialog.close();
		}
		manageDialog = new ManagePluginsDialog(this, addSaveActions, isNewTool);
		showDialog(manageDialog);
	}

	/**
	 * Displays the extensions installation dialog.
	 */
	public void showExtensions() {
		showDialog(new ExtensionTableDialog(this));
	}

	/**
	 * Set whether a component's header should be shown; the header is the component that
	 * is dragged in order to move the component within the tool, or out of the tool
	 * into a separate window
	 *
	 * @param provider provider of the visible component in the tool
	 * @param b true means to show the header
	 */
	public void showComponentHeader(ComponentProvider provider, boolean b) {
		winMgr.showComponentHeader(provider, b);
	}

	/** Install any services that are not provided by plugins */
	private void installServices() {
		serviceMgr.addService(ProjectDataService.class,
			(ProjectDataService) () -> project.getProjectData());
	}

	/**
	 * Returns true if the specified <code>serviceInterface</code>
	 * is a valid service that exists in this tool.
	 * @param serviceInterface the service interface
	 * @return true if the specified <code>serviceInterface</code>
	 */
	public boolean isService(Class<?> serviceInterface) {
		return serviceMgr.isService(serviceInterface);
	}

	@Override
	public <T> T getService(Class<T> c) {
		return serviceMgr.getService(c);
	}

	/**
	 * Get the objects that implement the given service.
	 * @param c service class
	 * @return array of Objects that implement the service, c.
	 */
	public <T> T[] getServices(Class<T> c) {
		return serviceMgr.getServices(c);
	}

	<T> void addService(Class<T> interfaceClass, T service) {
		serviceMgr.addService(interfaceClass, service);
	}

	void removeService(Class<?> interfaceClass, Object service) {
		serviceMgr.removeService(interfaceClass, service);
	}

	@Override
	public void addServiceListener(ServiceListener listener) {
		serviceMgr.addServiceListener(listener);
	}

	@Override
	public void removeServiceListener(ServiceListener listener) {
		serviceMgr.removeServiceListener(listener);
	}

	/**
	 * A convenience method to make an attention-grabbing noise to the user
	 */
	public void beep() {
		DockingWindowManager.beep();
	}

	/**
	 * Sets the provider that should get the default focus when no component has focus.
	 * @param provider the provider that should get the default focus when no component has focus.
	 */
	public void setDefaultComponent(ComponentProvider provider) {
		winMgr.setDefaultComponent(provider);
	}

	/**
	 * Registers an action context provider as the default provider for a specific action
	 * context type. Note that this registers a default provider for exactly
	 * that type and not a subclass of that type. If the provider want to support a hierarchy of
	 * types, then it must register separately for each type. See {@link ActionContext} for details
	 * on how the action context system works.
	 * @param type the ActionContext class to register a default provider for
	 * @param provider the ActionContextProvider that provides default tool context for actions
	 * that consume the given ActionContext type
	 */
	public void registerDefaultContextProvider(Class<? extends ActionContext> type,
			ActionContextProvider provider) {
		winMgr.registerDefaultContextProvider(type, provider);
	}

	/**
	 * Removes the default provider for the given ActionContext type.
	 * @param type the subclass of ActionContext to remove a provider for
	 * @param provider the ActionContextProvider to remove for the given ActionContext type
	 */
	public void unregisterDefaultContextProvider(Class<? extends ActionContext> type,
			ActionContextProvider provider) {
		winMgr.unregisterDefaultContextProvider(type, provider);
	}

	public ToolTemplate getToolTemplate(boolean includeConfigState) {
		throw new UnsupportedOperationException(
			"You cannot create templates for generic tools: " + getClass().getName());
	}

	public ToolTemplate saveToolToToolTemplate() {
		setConfigChanged(false);
		optionsMgr.removeUnusedOptions();
		return getToolTemplate(true);
	}

	public Element saveWindowingDataToXml() {
		throw new UnsupportedOperationException(
			"You cannot persist generic tools: " + getClass().getName());
	}

	public void restoreWindowingDataFromXml(Element element) {
		throw new UnsupportedOperationException(
			"You cannot persist generic tools: " + getClass().getName());
	}

	public boolean acceptDomainFiles(DomainFile[] data) {
		return pluginMgr.acceptData(data);
	}

	/**
	 * Request tool to accept specified URL.  Acceptance of URL depends greatly on the plugins
	 * configured into tool.  If no plugin accepts URL it will be rejected and false returned.
	 * If a plugin can accept the specified URL it will attempt to process and return true if
	 * successful.  The user may be prompted if connecting to the URL requires user authentication.
	 * @param url read-only resource URL
	 * @return true if URL accepted and processed else false
	 */
	public boolean accept(URL url) {
		return pluginMgr.accept(url);
	}

	public void addPropertyChangeListener(PropertyChangeListener l) {
		propertyChangeMgr.addPropertyChangeListener(l);

	}

	public void addToolListener(ToolListener listener) {
		eventMgr.addToolListener(listener);
	}

	/**
	 * Returns true if there is at least one tool listening to this tool's plugin events
	 * @return true if there is at least one tool listening to this tool's plugin events
	 */
	public boolean hasToolListeners() {
		return eventMgr.hasToolListeners();
	}

	protected void dispose() {
		isDisposed = true;

		pluginMgr.close();
		if (project != null) {
			if (project.getToolManager() != null) {
				project.getToolManager().disconnectTool(this);
			}
		}

		if (manageDialog != null) {
			manageDialog.close();
		}

		winMgr.setVisible(false);
		eventMgr.clear();
		pluginMgr.dispose();

		toolActions.removeActions(ToolConstants.TOOL_OWNER);
		toolActions.dispose();

		if (project != null) {
			project.releaseFiles(this);
		}

		optionsMgr.dispose();

		disposeManagers();
		winMgr.dispose();
		toolServices.closeTool(this);
	}

	private void disposeManagers() {
		taskMgr.dispose();
		executingTaskListeners.clear();
	}

	public void firePluginEvent(PluginEvent event) {
		eventMgr.fireEvent(event);
	}

	public String[] getConsumedToolEventNames() {
		return eventMgr.getEventsConsumed();
	}

	public DomainFile[] getDomainFiles() {
		return pluginMgr.getData();
	}

	@Override
	public ImageIcon getIcon() {
		return iconURL.getIcon();
	}

	public ToolIconURL getIconURL() {
		return iconURL;
	}

	public String getInstanceName() {
		return instanceName;
	}

	@Override
	public String getName() {
		return fullName;
	}

	public Class<?>[] getSupportedDataTypes() {
		return pluginMgr.getSupportedDataTypes();
	}

	public String[] getToolEventNames() {
		return eventMgr.getEventsProduced();
	}

	public String getToolName() {
		return toolName;
	}

	public void putInstanceName(String newInstanceName) {
		this.instanceName = newInstanceName;
		if (instanceName.length() == 0) {
			fullName = toolName;
		}
		else {
			fullName = toolName + "(" + instanceName + ")";
		}
		updateTitle();
	}

	public void removePropertyChangeListener(PropertyChangeListener l) {
		propertyChangeMgr.removePropertyChangeListener(l);

	}

	public void removeToolListener(ToolListener listener) {
		eventMgr.removeToolListener(listener);
	}

	public void restoreDataStateFromXml(Element root) {
		restoringDataState = true;
		try {
			pluginMgr.restoreDataStateFromXml(root);
			setConfigChanged(false);
		}
		finally {
			restoringDataState = false;
		}
	}

	public Element saveDataStateToXml(boolean savingProject) {
		return pluginMgr.saveDataStateToXml(savingProject);
	}

	protected boolean restoreFromXml(Element root) {
		toolName = root.getAttributeValue(ToolTemplate.TOOL_NAME_XML_NAME);
		instanceName = root.getAttributeValue(ToolTemplate.TOOL_INSTANCE_NAME_XML_NAME);

		if (instanceName.length() == 0) {
			fullName = toolName;
		}
		else {
			fullName = toolName + "(" + instanceName + ")";
		}

		restoreOptionsFromXml(root);
		winMgr.restorePreferencesFromXML(root);
		setDefaultOptionValues();
		boolean hasErrors = false;
		try {
			pluginMgr.restorePluginsFromXml(root);
		}
		catch (PluginException e) {
			hasErrors = true;
			Msg.showError(this, getToolFrame(), "Error Restoring Plugins", e.getMessage(), e);
		}

		winMgr.restoreWindowDataFromXml(root);
		updateTitle();
		return hasErrors;
	}

	public Element saveToXml(boolean includeConfigState) {
		Element root = new Element("TOOL");

		root.setAttribute(TOOL_NAME_XML_NAME, toolName);
		root.setAttribute(TOOL_INSTANCE_NAME_XML_NAME, instanceName);

		root.addContent(optionsMgr.getConfigState());
		pluginMgr.saveToXml(root, includeConfigState);
		winMgr.saveToXML(root);
		return root;
	}

	@Override
	public void setConfigChanged(boolean changed) {
		super.setConfigChanged(changed);
		if (manageDialog != null) {
			manageDialog.stateChanged();
		}
	}

	public void setIconURL(ToolIconURL newIconURL) {
		if (newIconURL == null) {
			throw new NullPointerException("iconURL cannot be null.");
		}
		setConfigChanged(true);
		if (newIconURL.equals(iconURL)) {
			return;
		}

		ImageIcon oldValue = iconURL.getSmallIcon();
		iconURL = newIconURL;
		ImageIcon newValue = iconURL.getSmallIcon();

		propertyChangeMgr.firePropertyChange(ICON_PROPERTY_NAME, oldValue, newValue);
		winMgr.setIcon(newValue);
	}

	public void setToolName(String name) {
		String oldName = toolName;
		toolName = name;
		if (instanceName.length() == 0) {
			fullName = toolName;
		}
		else {
			fullName = toolName + "(" + instanceName + ")";
		}
		winMgr.setToolName(fullName);
		propertyChangeMgr.firePropertyChange(TOOL_NAME_PROPERTY, oldName, toolName);
	}

	public void processToolEvent(PluginEvent toolEvent) {
		eventMgr.processToolEvent(toolEvent);
	}

	/**
	 * Execute the given command in the foreground.  Required domain object transaction will be
	 * started with delayed end to ensure that any follow-on analysis starts prior to transaction 
	 * end.
	 * 
	 * @param <T> {@link DomainObject} implementation interface
	 * @param commandName command name to be associated with transaction
	 * @param domainObject domain object to be modified
	 * @param f command function callback which should return true on success or false on failure.
	 * @return result from command function callback
	 */
	public <T extends DomainObject> boolean execute(String commandName, T domainObject,
			Function<T, Boolean> f) {
		return taskMgr.execute(commandName, domainObject, f);
	}

	/**
	 * Execute the given command in the foreground.  Required domain object transaction will be
	 * started with delayed end to ensure that any follow-on analysis starts prior to transaction 
	 * end.
	 * 
	 * @param <T> {@link DomainObject} implementation interface
	 * @param commandName command name to be associated with transaction
	 * @param domainObject domain object to be modified
	 * @param r command function runnable
	 */
	public <T extends DomainObject> void execute(String commandName, T domainObject, Runnable r) {
		execute(commandName, domainObject, d -> {
			r.run();
			return true;
		});
	}

	/**
	 * Call the applyTo() method on the given command to make some change to
	 * the domain object; the command is done in the AWT thread, therefore,
	 * the command that is to be executed should be a relatively quick operation
	 * so that the event queue does not appear to "hang." For lengthy
	 * operations, the command should be done in a background task.
	 * @param command command to apply
	 * @param obj domain object that the command will be applied to
	 * @return status of the command's applyTo() method
	 * @see #executeBackgroundCommand(BackgroundCommand, DomainObject)
	 */
	public <T extends DomainObject> boolean execute(Command<T> command, T obj) {
		return taskMgr.execute(command, obj);
	}

	/**
	 * Return whether there is a command being executed
	 * @return true if there is a command being executed
	 */
	public boolean isExecutingCommand() {
		return taskMgr.isBusy() || !executingTaskListeners.isEmpty();
	}

	/**
	 * @return true if the current thread group or its ancestors is
	 * a member of this tools background task thread group, else false
	 */
	public boolean threadIsBackgroundTaskThread() {
		ThreadGroup taskGroup = taskMgr.getTaskThreadGroup();
		ThreadGroup group = Thread.currentThread().getThreadGroup();
		while (group != null && group != taskGroup) {
			group = group.getParent();
		}
		return group == taskGroup;
	}

	/**
	 * Start a new thread that will call the given command's applyTo()
	 * method to make some change in the domain object. This method should
	 * be called for an operation that could potentially take a long time to
	 * complete.
	 * @param cmd command that will be executed in another thread (not the
	 * AWT Thread)
	 * @param obj domain object that the command will be applied to
	 */
	public <T extends DomainObject> void executeBackgroundCommand(BackgroundCommand<T> cmd, T obj) {
		taskMgr.executeCommand(cmd, obj);
	}

	/**
	 * Add the given background command to a queue that is processed after the
	 * main background command completes.
	 * @param cmd background command to submit
	 * @param obj the domain object to be modified by the command.
	 */
	public <T extends DomainObject> void scheduleFollowOnCommand(BackgroundCommand<T> cmd, T obj) {
		taskMgr.scheduleFollowOnCommand(cmd, obj);
	}

	/**
	 * Launch the task in a new thread
	 * @param task task to run in a new thread
	 * @param delay number of milliseconds to delay the display of task monitor dialog
	 */
	public void execute(Task task, int delay) {
		task.addTaskListener(new TaskBusyListener());
		new TaskLauncher(task, getToolFrame(), delay);
	}

	/**
	 * Launch the task in a new thread
	 * @param task task to run in a new thread
	 */
	public void execute(Task task) {
		task.addTaskListener(new TaskBusyListener());
		new TaskLauncher(task, winMgr.getActiveWindow());
	}

	@Override
	public ToolOptions getOptions(String categoryName) {
		return optionsMgr.getOptions(categoryName);
	}

	/**
	 * Updates saved options from an old name to a new name.  NOTE: this must be called before
	 * any calls to register or get options.
	 * @param oldName the old name of the options.
	 * @param newName the new name of the options.
	 */
	public void registerOptionsNameChange(String oldName, String newName) {
		optionsMgr.registerOptionNameChanged(oldName, newName);
	}

	/**
	  * Return true if there is an options category with the given name
	  * @param category name of the options set
	  * @return true if there is an options category with the given name
	  */
	public boolean hasOptions(String category) {
		return optionsMgr.hasOptions(category);
	}

	/**
	 * Returns options manager
	 * @return the manager
	 */
	OptionsManager getOptionsManager() {
		return optionsMgr;
	}

	/**
	 * Get all options.
	 * @return zero-length array if no options exist.
	 */
	public ToolOptions[] getOptions() {
		return optionsMgr.getOptions();
	}

	/**
	 * Get the project associated with this tool.  Null will be returned if there is no
	 * project open or if this tool does not use projects.
	 *
	 * @return null if there is no open project
	 */
	public Project getProject() {
		return project;
	}

	/**
	 * Returns the project manager associated with this tool.
	 *
	 * <P>Null will be returned if this tool does not use projects.
	 *
	 * @return the project manager associated with this tool
	 */
	public ProjectManager getProjectManager() {
		return projectManager;
	}

	/**
	 * Returns an object that provides fundamental services that plugins can use
	 * @return the services instance
	 */
	public ToolServices getToolServices() {
		return toolServices;
	}

	/**
	 * Sets the subtitle on the tool; the subtitle is extra text in the title.
	 * @param subTitle the subtitle to display on the tool
	 */
	public void setSubTitle(String subTitle) {
		this.subTitle = subTitle;
		updateTitle();
	}

	/**
	 * Add a plugin to the tool.
	 * @param className name of the plugin class, e.g., "MyPlugin.class.getName()"
	 * @throws PluginException if the plugin could not be constructed, or
	 * there was problem executing its init() method, or if a plugin of this
	 * class already exists in the tool
	 */
	public void addPlugin(String className) throws PluginException {
		addPlugins(List.of(className));
	}

	/**
	 * Add plugins to the tool.
	 * @param classNames collection of plugin class names
	 * @throws PluginException if a plugin could not be constructed, or
	 * there was problem executing its init() method, or if a plugin of this
	 * class already exists in the tool
	 */
	public void addPlugins(Collection<String> classNames) throws PluginException {
		checkedRunSwingNow(() -> {
			try {
				pluginMgr.addPlugins(classNames);
			}
			finally {
				setConfigChanged(true);
			}
		}, PluginException.class);
	}

	public void addPlugin(Plugin p) throws PluginException {
		checkedRunSwingNow(() -> {
			pluginMgr.addPlugin(p);
			setConfigChanged(true);
		}, PluginException.class);
	}

	/**
	 * Remove the array of plugins from the tool.
	 * @param plugins array of plugins to remove
	 */
	public void removePlugins(List<Plugin> plugins) {
		Swing.runNow(() -> {
			try {
				pluginMgr.removePlugins(plugins);
			}
			finally {
				setConfigChanged(true);
			}
		});
	}

	public boolean hasUnsavedData() {
		return pluginMgr.hasUnsavedData();
	}

	/**
	 * Return a list of plugins in the tool
	 * @return list of plugins in the tool
	 */
	public List<Plugin> getManagedPlugins() {
		return pluginMgr.getPlugins();
	}

	/**
	 * Save this tool's configuration.
	 */
	public void saveTool() {
		toolServices.saveTool(this);
	}

	/**
	 * Triggers a 'Save As' dialog that allows the user to save off the tool under a different
	 * name.  This returns true if the user performed a save.
	 * @return true if a save happened
	 */
	public boolean saveToolAs() {
		return dialogMgr.saveToolAs();
	}

	/**
	 * Add a status component to the tool.
	 *
	 * @param c component to add
	 * @param addBorder true if a border should be added to the component
	 * @param rightSide true if the component should be placed in the right side of the tool
	 */
	public void addStatusComponent(JComponent c, boolean addBorder, boolean rightSide) {
		winMgr.addStatusItem(c, addBorder, rightSide);
	}

	/**
	 * Remove the status component.
	 * @param c status component to remove
	 */
	public void removeStatusComponent(JComponent c) {
		winMgr.removeStatusItem(c);
	}

	protected void addExitAction() {
		DockingAction exitAction = new DockingAction("Exit Ghidra", ToolConstants.TOOL_OWNER) {

			@Override
			public void actionPerformed(ActionContext context) {
				AppInfo.exitGhidra();
			}
		};
		exitAction.setHelpLocation(
			new HelpLocation(ToolConstants.FRONT_END_HELP_TOPIC, exitAction.getName()));
		exitAction.setMenuBarData(new MenuData(
			new String[] { ToolConstants.MENU_FILE, "E&xit Ghidra" }, null, "Window_Z"));

		if (Platform.CURRENT_PLATFORM.getOperatingSystem() != OperatingSystem.MAC_OS_X) {
			// Only install keybinding on non-OSX systems, as OSX handles the Command-Q
			// quit action for us.  If we put the binding on, then we will get the
			// callback twice.
			exitAction.setKeyBindingData(
				new KeyBindingData(KeyEvent.VK_Q, DockingUtils.CONTROL_KEY_MODIFIER_MASK));
		}

		exitAction.setEnabled(true);
		addAction(exitAction);
	}

	protected void addOptionsAction() {
		DockingAction optionsAction = new DockingAction("Edit Options", ToolConstants.TOOL_OWNER) {

			@Override
			public void actionPerformed(ActionContext context) {
				optionsMgr.editOptions();
			}

		};
		optionsAction.setAddToAllWindows(true);
		optionsAction.setHelpLocation(
			new HelpLocation(ToolConstants.FRONT_END_HELP_TOPIC, "Tool Options"));
		MenuData menuData = new MenuData(new String[] { ToolConstants.MENU_EDIT, "&Tool Options" },
			null, ToolConstants.TOOL_OPTIONS_MENU_GROUP);
		menuData.setMenuSubGroup(ToolConstants.TOOL_OPTIONS_MENU_GROUP);
		optionsAction.setMenuBarData(menuData);

		optionsAction.setEnabled(true);
		addAction(optionsAction);
	}

	protected void addSaveToolAction() {

		DockingAction saveAction = new DockingAction("Save Tool", ToolConstants.TOOL_OWNER) {

			@Override
			public void actionPerformed(ActionContext context) {
				saveTool();
			}
		};
		MenuData menuData =
			new MenuData(new String[] { ToolConstants.MENU_FILE, "Save Tool" }, null, "Tool");
		menuData.setMenuSubGroup("1Tool");
		saveAction.setMenuBarData(menuData);
		saveAction.setEnabled(true);
		saveAction.setHelpLocation(new HelpLocation(ToolConstants.TOOL_HELP_TOPIC, "Save Tool"));

		DockingAction saveAsAction = new DockingAction("Save Tool As", ToolConstants.TOOL_OWNER) {

			@Override
			public void actionPerformed(ActionContext context) {
				saveToolAs();
			}
		};
		menuData =
			new MenuData(new String[] { ToolConstants.MENU_FILE, "Save Tool As..." }, null, "Tool");
		menuData.setMenuSubGroup("2Tool");
		saveAsAction.setMenuBarData(menuData);

		saveAsAction.setEnabled(true);
		saveAsAction
				.setHelpLocation(new HelpLocation(ToolConstants.TOOL_HELP_TOPIC, "Tool_Changes"));

		addAction(saveAction);
		addAction(saveAsAction);
	}

	/**
	 * Adds actions to the tool for transferring focus to the first component in the next
	 * or previous dockable component provider.
	 */
	protected void addNextPreviousProviderActions() {
		// @formatter:off
		new ActionBuilder("Jump to Next Dockable Provider", ToolConstants.TOOL_OWNER)
			.keyBinding(KeyStroke.getKeyStroke("control J"))
			.description("Transfer focus to the next major component in this windows")
			.onAction(e -> nextDockableComponent(true))
			.buildAndInstall(this);

		new ActionBuilder("Jump to Previous Dockable Provider", ToolConstants.TOOL_OWNER)
			.keyBinding("shift control J")
			.description("Transfer focus to the previous major component in this windows")
			.onAction(e -> nextDockableComponent(false))
			.buildAndInstall(this);
		// @formatter:on

	}

	protected void addExportToolAction() {
		String menuGroup = "Tool";
		String exportPullright = "Export";
		setMenuGroup(new String[] { ToolConstants.MENU_FILE, exportPullright }, menuGroup);

		int subGroup = 1;
		DockingAction exportToolAction =
			new DockingAction("Export Tool", ToolConstants.TOOL_OWNER) {

				@Override
				public void actionPerformed(ActionContext context) {
					dialogMgr.exportTool();
				}
			};
		MenuData menuData = new MenuData(
			new String[] { ToolConstants.MENU_FILE, exportPullright, "Export Tool..." });
		menuData.setMenuSubGroup(Integer.toString(subGroup++));
		exportToolAction.setMenuBarData(menuData);
		exportToolAction
				.setHelpLocation(new HelpLocation(ToolConstants.TOOL_HELP_TOPIC, "Export_Tool"));
		addAction(exportToolAction);

		DockingAction exportDefautToolAction =
			new DockingAction("Export Default Tool", ToolConstants.TOOL_OWNER) {

				@Override
				public void actionPerformed(ActionContext e) {
					dialogMgr.exportDefaultTool();
				}
			};
		menuData = new MenuData(
			new String[] { ToolConstants.MENU_FILE, exportPullright, "Export Default Tool..." });
		menuData.setMenuSubGroup(Integer.toString(subGroup++));
		exportDefautToolAction.setMenuBarData(menuData);
		exportDefautToolAction.setHelpLocation(
			new HelpLocation(ToolConstants.TOOL_HELP_TOPIC, "Export_Default_Tool"));

		addAction(exportDefautToolAction);
	}

	protected void addHelpActions() {
		new ActionBuilder("About Ghidra", ToolConstants.TOOL_OWNER)
				.menuPath(ToolConstants.MENU_HELP, "&About Ghidra")
				.menuGroup("ZZA")
				.helpLocation(new HelpLocation(ToolConstants.ABOUT_HELP_TOPIC, "About_Ghidra"))
				.inWindow(ActionBuilder.When.ALWAYS)
				.onAction(c -> DockingWindowManager.showDialog(new AboutDialog()))
				.buildAndInstall(this);

		new ActionBuilder("User Agreement", ToolConstants.TOOL_OWNER)
				.menuPath(ToolConstants.MENU_HELP, "&User Agreement")
				.menuGroup(ToolConstants.HELP_CONTENTS_MENU_GROUP)
				.helpLocation(new HelpLocation(ToolConstants.ABOUT_HELP_TOPIC, "User_Agreement"))
				.inWindow(ActionBuilder.When.ALWAYS)
				.onAction(
					c -> DockingWindowManager.showDialog(new UserAgreementDialog(false, false)))
				.buildAndInstall(this);

		final ErrorReporter reporter = ErrLogDialog.getErrorReporter();
		if (reporter != null) {
			new ActionBuilder("Report Bug", ToolConstants.TOOL_OWNER)
					.menuPath(ToolConstants.MENU_HELP, "&Report Bug...")
					.menuGroup("BBB")
					.helpLocation(new HelpLocation("ErrorReporting", "Report_Bug"))
					.inWindow(ActionBuilder.When.ALWAYS)
					.onAction(c -> reporter.report(getToolFrame(), "User Bug Report", null))
					.buildAndInstall(this);
		}

		HelpService help = Help.getHelpService();

		new ActionBuilder("Contents", ToolConstants.TOOL_OWNER)
				.menuPath(ToolConstants.MENU_HELP, "&Contents")
				.menuGroup(ToolConstants.HELP_CONTENTS_MENU_GROUP)
				.helpLocation(new HelpLocation("Misc", "Welcome_to_Ghidra_Help"))
				.inWindow(ActionBuilder.When.ALWAYS)
				.onAction(c -> help.showHelp(null, false, getToolFrame()))
				.buildAndInstall(this);
	}

	/**
	 * Clear the list of events that were last generated.
	 *
	 */
	public void clearLastEvents() {
		eventMgr.clearLastEvents();
	}

	/**
	 * Closes this tool, possibly with input from the user. The following conditions are checked
	 * and can prompt the user for more info and allow them to cancel the close.
	 * <OL>
	 * 	<LI>Running tasks. Closing with running tasks could lead to data loss.</LI>
	 *  <LI>Plugins get asked if they can be closed. They may prompt the user to resolve
	 *  some plugin specific state.</LI>
	 * 	<LI>The user is prompted to save any data changes.</LI>
	 * 	<LI>Tools are saved, possibly asking the user to resolve any conflicts caused by
	 *  changing multiple instances of the same tool in different ways.</LI>
	 * 	<LI>If all the above conditions passed, the tool is closed and disposed.</LI>
	 * </OL>
	 */
	@Override
	public void close() {
		if (canClose()) {
			dispose();
		}
	}

	protected boolean canClose() {
		if (!canStopTasks()) {
			return false;
		}
		if (!canClosePlugins()) {
			return false;
		}
		if (!pluginMgr.saveData()) {
			return false;
		}
		return doSaveTool();
	}

	/**
	 * Normally, tools are not allowed to close while tasks are running in that tool as it
	 * could leave the application in an unstable state. Tools that exit the application
	 * (such as the FrontEndTool) can override this so that the user can terminate running tasks
	 * and not have that prevent exiting the application.
	 * @return whether the user is allowed to terminate tasks so that the tool can be closed.
	 */
	protected boolean allowTerminatingTasksWhenClosing() {
		return false;
	}

	/**
	 * Checks if this tool's plugins are in a state to be closed.
	 * @return true if all the plugins in the tool can be closed without further user input.
	 */
	protected boolean canClosePlugins() {
		return pluginMgr.canClose();
	}

	/**
	 * Checks if this tool has running tasks, with optionally giving the user an
	 * opportunity to cancel them.
	 *
	 * @return true if this tool has running tasks
	 */
	protected boolean canStopTasks() {
		if (!taskMgr.isBusy()) {
			return true;
		}

		int result = OptionDialog.showYesNoDialog(getToolFrame(), "Tool Busy Executing Task",
			"The tool is busy performing a background task.\n If you continue the" +
				" task may be terminated and some work may be lost!\n\nContinue anyway?");
		if (result != OptionDialog.YES_OPTION) {
			return false;
		}

		Task task = new Task("Stopping Tasks", true, false, true) {
			@Override
			public void run(TaskMonitor monitor) throws CancelledException {
				taskMgr.stop(monitor);
			}
		};
		TaskLauncher.launch(task);
		return !task.isCancelled();
	}

	/**
	 * Returns true if this tool needs saving
	 * @return true if this tool needs saving
	 */
	public boolean shouldSave() {
		return hasConfigChanged(); // ignore the window layout changes
	}

	/**
	 * Called when it is time to save the tool.  Handles auto-saving logic.
	 * @return true if a save happened
	 */
	protected boolean doSaveTool() {
		if (toolServices.canAutoSave(this)) {
			saveTool();
		}
		else if (hasConfigChanged()) {
			int result = OptionDialog.showOptionDialog(getToolFrame(), SAVE_DIALOG_TITLE,
				"This tool has changed.  There are/were multiple instances of this tool\n" +
					"running and Ghidra cannot determine if this tool instance should\n" +
					"automatically be saved.  Do you want to save the configuration of this tool\n" +
					"instance?",
				"Save", "Save As...", "Don't Save", OptionDialog.WARNING_MESSAGE);
			if (result == OptionDialog.CANCEL_OPTION) {
				return false;
			}
			if (result == OptionDialog.OPTION_ONE) {
				saveTool();
			}
			else if (result == OptionDialog.OPTION_TWO) {
				boolean didSave = saveToolAs();
				if (!didSave) {
					return doSaveTool();
				}
			}
			// option 3 is don't save; just exit
		}
		return true;
	}

	/**
	 * Can the domain object be closed?
	 * <br>Note: This forces plugins to terminate any tasks they have running for the
	 * indicated domain object and apply any unsaved data to the domain object. If they can't do
	 * this or the user cancels then this returns false.
	 *
	 * @param domainObject the domain object to check
	 * @return false any of the plugins reports that the domain object
	 * should not be closed
	 */
	public boolean canCloseDomainObject(DomainObject domainObject) {
		if (taskMgr.hasTasksForDomainObject(domainObject)) {
			String name = domainObject.getName();
			Msg.showInfo(getClass(), getToolFrame(), "Close " + name + " Failed",
				"The tool is currently working in the background on " + name +
					".\nPlease stop the background processing first.");

			return false;
		}
		return pluginMgr.canCloseDomainObject(domainObject);
	}

	public boolean canCloseDomainFile(DomainFile domainFile) {
		Object consumer = new Object();
		DomainObject domainObject = domainFile.getOpenedDomainObject(consumer);
		if (domainObject == null) {
			return true;
		}
		try {
			return canCloseDomainObject(domainObject);
		}
		finally {
			domainObject.release(consumer);
		}
	}

	/**
	 * Called when the domain object is about to be saved; this allows any plugin that has
	 * a cache to flush out to the domain object.
	 * @param dobj domain object that is about to be saved
	 */
	public void prepareToSave(DomainObject dobj) {
		pluginMgr.prepareToSave(dobj);
	}

	/**
	 * Sets the size of the tool's main window
	 * @param width width in pixels
	 * @param height height in pixels
	 */
	public void setSize(int width, int height) {
		winMgr.getMainWindow().setSize(new Dimension(width, height));
	}

	/**
	 * Return the dimension of this tool's frame.
	 * @return dimension of this tool's frame
	 */
	public Dimension getSize() {
		return winMgr.getMainWindow().getSize();
	}

	/**
	 * Set the location of this tool's frame on the screen.
	 * @param x screen x coordinate
	 * @param y screen y coordinate
	 */
	public void setLocation(int x, int y) {
		winMgr.getMainWindow().setLocation(x, y);
	}

	/**
	 * Return the location of this tool's frame on the screen.
	 * @return location of this tool's frame
	 */
	public Point getLocation() {
		return winMgr.getMainWindow().getLocation();
	}

	private void updateTitle() {
		String title = fullName;
		if (subTitle != null) {
			title += ": " + subTitle;
		}
		winMgr.setToolName(title);
	}

	protected void restoreOptionsFromXml(Element root) {
		optionsMgr.setConfigState(root.getChild("OPTIONS"));
		toolActions.optionsRebuilt();
		setToolOptionsHelpLocation();
	}

	protected void setProject(Project project) {
		this.project = project;
		if (project != null) {
			toolServices = project.getToolServices();
		}
		else {
			toolServices = new ToolServicesAdapter();
		}
	}

	protected void restorePluginsFromXml(Element elem) throws PluginException {
		pluginMgr.restorePluginsFromXml(elem);
	}

	PluginEvent[] getLastEvents() {
		return eventMgr.getLastEvents();
	}

	void removeAll(String owner) {
		toolActions.removeActions(owner);
		winMgr.ownerRemoved(owner);
	}

	void registerEventProduced(Class<? extends PluginEvent> eventClass) {
		eventMgr.addEventProducer(eventClass);
	}

	public void addEventListener(Class<? extends PluginEvent> eventClass,
			PluginEventListener listener) {
		eventMgr.addEventListener(eventClass, listener);
	}

	void unregisterEventProduced(Class<? extends PluginEvent> eventClass) {
		eventMgr.removeEventProducer(eventClass);
	}

	public void addListenerForAllPluginEvents(PluginEventListener listener) {
		eventMgr.addAllEventListener(listener);
	}

	public void removeListenerForAllPluginEvents(PluginEventListener listener) {
		eventMgr.removeAllEventListener(listener);
	}

	public void removeEventListener(Class<? extends PluginEvent> eventClass,
			PluginEventListener listener) {
		eventMgr.removeEventListener(eventClass, listener);
	}

	/**
	 * Remove the event listener by className; the plugin registered
	 * for events, but the construction failed.
	 * @param className class name of the plugin that is the event listener
	 */
	void removeEventListener(String className) {
		eventMgr.removeEventListener(className);
	}

	/**
	 * Cancel the current task in the tool.
	 */
	public void cancelCurrentTask() {
		this.taskMgr.cancelCurrentTask();
	}

	private void setToolOptionsHelpLocation() {
		Options opt = getOptions(ToolConstants.TOOL_OPTIONS);
		opt.setOptionsHelpLocation(
			new HelpLocation(ToolConstants.TOOL_HELP_TOPIC, "OptionsForTool"));

		opt = getOptions(DockingToolConstants.KEY_BINDINGS);
		opt.setOptionsHelpLocation(
			new HelpLocation(ToolConstants.TOOL_HELP_TOPIC, "KeyBindings_Option"));
	}

	public TransientToolState getTransientState() {
		return pluginMgr.getTransientState();
	}

	public UndoRedoToolState getUndoRedoToolState(DomainObject domainObject) {
		return pluginMgr.getUndoRedoToolState(domainObject);
	}

	/**
	 * Shows the dialog using the tool's currently active window as a parent.  Also,
	 * remembers any size and location adjustments made by the user for the next
	 * time the dialog is shown.
	 *
	 * @param dialogComponent the DialogComponentProvider object to be shown in a dialog.
	 *
	 * @deprecated dialogs are now always shown over the active window when possible
	 */
	@Deprecated
	public void showDialogOnActiveWindow(DialogComponentProvider dialogComponent) {
		DockingWindowManager.showDialog(dialogComponent);
	}

	/**
	 * Shows the dialog using the window containing the given componentProvider as its parent window.
	 * Remembers the last location and size of this dialog for the next time it is shown.
	 *
	 * @param dialogComponent the DialogComponentProvider object to be shown in a dialog.
	 * @param centeredOnProvider the component provider that is used to find a parent window for this dialog.
	 * The dialog is centered on this component provider's component.
	 */
	public void showDialog(DialogComponentProvider dialogComponent,
			ComponentProvider centeredOnProvider) {
		winMgr.showDialog(dialogComponent, centeredOnProvider);
	}

	/**
	 * Shows the dialog using the tool's parent frame, but centers the dialog on the given
	 * component
	 *
	 * @param dialogComponent the DialogComponentProvider object to be shown in a dialog.
	 * @param centeredOnComponent the component on which to center the dialog.
	 */
	public void showDialog(DialogComponentProvider dialogComponent, Component centeredOnComponent) {
		DockingWindowManager.showDialog(centeredOnComponent, dialogComponent);
	}

	public Window getActiveWindow() {
		return winMgr.getActiveWindow();
	}

	@Override
	public ComponentProvider getActiveComponentProvider() {
		return winMgr.getActiveComponentProvider();
	}

	public void setUnconfigurable() {
		isConfigurable = false;
	}

	public boolean isConfigurable() {
		return isConfigurable;
	}

	/**
	 * This method will be deleted.  Preference state should be managed with the 
	 * {@link DockingWindowManager}.
	 * @param name the name
	 * @deprecated use the {@link DockingWindowManager}
	 */
	@Deprecated(since = "11.3", forRemoval = true)
	public void removePreferenceState(String name) {
		winMgr.removePreferenceState(name);
	}

	@Override
	public void contextChanged(ComponentProvider provider) {
		if (isDisposed) {
			return;
		}
		super.contextChanged(provider);
	}

	public boolean isRestoringDataState() {
		return restoringDataState;
	}

	/**
	 * Transfers focus to the first component in the next/previous dockable component provider.
	 * @param forward true to go to next provider, false to go to previous provider
	 */
	private void nextDockableComponent(boolean forward) {
		KeyboardFocusManager focusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
		Component focusOwner = focusManager.getPermanentFocusOwner();
		Component next = findNextProviderComponent(focusOwner, forward);

		// If going backwards, go back one more provider, then go forward to get the first
		// component in the resulting provider. This makes it so that when going backwards, you
		// still get the first component in the component provider and not the last.
		if (!forward) {
			next = findNextProviderComponent(next, false);
			next = findNextProviderComponent(next, true);
		}
		if (next != null) {
			next.requestFocus();
		}
	}

	private Component findNextProviderComponent(Component component, boolean forward) {
		if (component == null) {
			return null;
		}

		DockingWindowManager windowManager = getWindowManager();
		ComponentProvider startingProvider = windowManager.getComponentProvider(component);

		Component next = getNext(component, forward);
		while (next != null && next != component) {
			// Skip JTabbedPanes. Assume the user prefers that the component inside the tabbed
			// pane gets focus, not the tabbed pane itself so the user does not have to navigate
			// twice to get the internal component.
			if (next instanceof JTabbedPane) {
				next = getNext(next, forward);
				continue;
			}
			ComponentProvider nextProvider = windowManager.getComponentProvider(next);
			if (nextProvider != startingProvider) {
				return next;
			}
			next = getNext(next, forward);
		}
		return null;
	}

	private Component getNext(Component component, boolean forward) {
		KeyboardFocusManager focusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
		Window window = focusManager.getFocusedWindow();
		FocusTraversalPolicy policy = window.getFocusTraversalPolicy();
		if (forward) {
			return policy.getComponentAfter(window, component);
		}
		return policy.getComponentBefore(window, component);
	}

//==================================================================================================
// Inner Classes
//==================================================================================================

	private class ToolOptionsListener implements OptionsChangeListener {

		@Override
		public void optionsChanged(ToolOptions options, String name, Object oldValue,
				Object newValue) {
			PluginTool.this.optionsChanged(options, name, oldValue, newValue);
		}
	}

	private interface CheckedRunnable<T extends Throwable> {
		public void run() throws T;
	}

	private <T extends Throwable> void checkedRunSwingNow(CheckedRunnable<T> r,
			Class<T> exceptionClass) throws T {
		AtomicReference<Throwable> caughtException = new AtomicReference<>();
		Swing.runNow(() -> {
			try {
				r.run();
			}
			catch (Throwable th) {
				caughtException.set(th);
			}
		});
		Throwable th = caughtException.get();
		if (th != null) {
			if (exceptionClass.isInstance(th)) {
				throw exceptionClass.cast(th);
			}
			throw new RuntimeException("Unexpected exception type " + th.getClass(), th);
		}
	}

	private class TaskBusyListener implements TaskListener {

		TaskBusyListener() {
			executingTaskListeners.add(this);
		}

		@Override
		public void taskCompleted(Task t) {
			executingTaskListeners.remove(this);
		}

		@Override
		public void taskCancelled(Task t) {
			executingTaskListeners.remove(this);
		}
	}
}
