/*
 * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
 *
 * Copyright @ 2015 Atlassian Pty Ltd
 *
 * 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 net.java.sip.communicator.service.globalshortcut;

import java.awt.*;

/**
 * This global shortcut service permits to register listeners for global
 * shortcut (i.e. keystroke even if application is not foreground).
 *
 * @author Sebastien Vincent
 */
public interface GlobalShortcutService
{
    /**
     * Value for AWTKeyStroke's modifiers that specify a "special" key shortcut.
     */
    public static final int SPECIAL_KEY_MODIFIERS = 16367;

    /**
     * Registers an action to execute when the keystroke is typed.
     *
     * @param l listener to notify when keystroke is typed
     * @param keyStroke keystroke that will trigger the action
     */
    public void registerShortcut(GlobalShortcutListener l,
        AWTKeyStroke keyStroke);

    /**
     * Unregisters an action to execute when the keystroke is typed.
     *
     * @param l listener to remove
     * @param keyStroke keystroke that will trigger the action
     */
    public void unregisterShortcut(GlobalShortcutListener l,
        AWTKeyStroke keyStroke);

    /**
     * Enable or disable special key detection.
     *
     * @param enable enable or not special key detection.
     * @param callback object to be notified
     */
    public void setSpecialKeyDetection(boolean enable,
        GlobalShortcutListener callback);

    /**
     * Get special keystroke or null if not supported or user cancels.
     *
     * @return special keystroke or null if not supported or user cancels
     */
    public AWTKeyStroke getSpecialKey();

    /**
     * Reload global shortcuts.
     */
    public void reloadGlobalShortcuts();

    /**
     * Enable or not global shortcut.
     *
     * @param enable enable or not global shortcut
     */
    public void setEnable(boolean enable);
}