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/**
 * DataCleaner (community edition)
 * Copyright (C) 2014 Neopost - Customer Information Management
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.datacleaner.bootstrap;

import java.awt.event.ActionListener;
import java.util.List;

import org.datacleaner.windows.DCWindow;

/**
 * Interface for component that manages the context of the UI in DataCleaner.
 */
public interface WindowContext {

    /**
     * Adds an action listener for exit actions
     *
     * @param exitActionListener
     */
    void addExitActionListener(ExitActionListener exitActionListener);

    /**
     * Removes an action listener for exit actions
     *
     * @param exitActionListener
     */
    void removeExitActionListener(ExitActionListener exitActionListener);

    /**
     * Gets all active windows in the application
     *
     * @return
     */
    List getWindows();

    /**
     * Method which should be invoked when a window is closed/disposed.
     *
     * @param window
     *            the window that was closed.
     */
    void onDispose(DCWindow window);

    /**
     * Method which should be invoked when a window is opened/shown.
     *
     * @param window
     *            the window that is shown.
     */
    void onShow(DCWindow window);

    /**
     * Gets the count of windows of a particular type.
     *
     * @param windowClass
     *            the window type
     * @return an integer representing the count of the specified window type.
     */
    int getWindowCount(Class windowClass);

    /**
     * Adds a window listener which will be invoked when windows are shown and
     * disposed.
     *
     * @param listener
     */
    void addWindowListener(ActionListener listener);

    /**
     * Removes a window listener that has previously been added using
     * {@link #addWindowListener(ActionListener)}
     *
     * @param listener
     */
    void removeWindowListener(ActionListener listener);

    /**
     * Requests that an "exit application" dialog is shown.
     *
     * @return true if the user decides to exit.
     */
    boolean showExitDialog();

    /**
     * Requests the application to exit.
     */
    void exit();
}