/*
 * Copyright (c) 2010, grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

package org.jowidgets.tools.command;

import org.jowidgets.api.command.IAction;
import org.jowidgets.api.command.IExecutionContext;
import org.jowidgets.api.command.IExecutionContextValues;
import org.jowidgets.api.widgets.IWidget;
import org.jowidgets.util.ITypedKey;

public final class ExecutionContext implements IExecutionContext {

    private final IAction action;
    private final IWidget source;
    private final IExecutionContextValues executionContextValues;

    public ExecutionContext(final IAction action, final IWidget source) {
        this(action, source, null);
    }

    public ExecutionContext(final IAction action, final IWidget source, final IExecutionContextValues executionContextValues) {
        super();
        this.executionContextValues = executionContextValues;
        this.action = action;
        this.source = source;
    }

    @Override
    public IAction getAction() {
        return action;
    }

    @Override
    public IWidget getSource() {
        return source;
    }

    @Override
    public <VALUE_TYPE> VALUE_TYPE getValue(final ITypedKey<VALUE_TYPE> key) {
        if (executionContextValues != null) {
            return executionContextValues.getValue(key);
        }
        return null;
    }

}