Copyright (c) 2006, 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
/*******************************************************************************
 * Copyright (c) 2006, 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.core.commands;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.commands.IDebugCommandRequest;
import org.eclipse.debug.core.commands.IStepFiltersHandler;
import org.eclipse.debug.core.model.IDebugElement;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.debug.core.model.IStepFilters;

Default toggle step filters command for the standard debug model.
Since:
3.3/**
 * Default toggle step filters command for the standard debug model.
 *
 * @since 3.3
 */
public class StepFiltersCommand extends ForEachCommand implements IStepFiltersHandler {

	@Override
	protected Object getTarget(Object element) {
		IDebugTarget[] targets = getDebugTargets(element);
		if (targets.length > 0) {
			IStepFilters[] filters = new IStepFilters[targets.length];
			for (int i = 0; i < targets.length; i++) {
				IDebugTarget target = targets[i];
				if (target instanceof IStepFilters) {
					filters[i] = (IStepFilters) target;
				} else {
					filters[i] = (IStepFilters) getAdapter(element, IStepFilters.class);
				}
				if (filters[i] == null) {
					return null;
				}
			}
			return filters;
		}
		return null;
	}

	private IDebugTarget[] getDebugTargets(Object element) {
		if (element instanceof IDebugElement) {
			IDebugElement debugElement = (IDebugElement) element;
			return new IDebugTarget[] { debugElement.getDebugTarget() };
		} else if (element instanceof ILaunch) {
			ILaunch launch = (ILaunch) element;
			return launch.getDebugTargets();
		} else if (element instanceof IProcess) {
			IProcess process = (IProcess) element;
			return process.getLaunch().getDebugTargets();
		} else {
			return new IDebugTarget[0];
		}
	}

	@Override
	protected void execute(Object target) throws CoreException {
		if (target == null) {
			return;
		}
		IStepFilters[] filters = (IStepFilters[]) target;
		for (IStepFilters filter : filters) {
			filter.setStepFiltersEnabled(DebugPlugin.isUseStepFilters());
		}
	}

	@Override
	protected boolean isExecutable(Object target) {
		IStepFilters[] filters = (IStepFilters[]) target;
		for (IStepFilters filter : filters) {
			if (filter == null || !filter.supportsStepFilters()) {
				return false;
			}
		}
		return true;
	}

	@Override
	protected Object getEnabledStateJobFamily(IDebugCommandRequest request) {
		return IStepFiltersHandler.class;
	}
}