fr.fg.client.openjwt.core.EventManager.java Source code

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Here is the source code for fr.fg.client.openjwt.core.EventManager.java

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/*
Copyright 2010 Jeremie Gottero
    
This file is part of Fallen Galaxy.
    
Fallen Galaxy is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
Fallen Galaxy 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 Affero General Public License for more details.
    
You should have received a copy of the GNU Affero General Public License
along with Fallen Galaxy. If not, see <http://www.gnu.org/licenses/>.
*/

package fr.fg.client.openjwt.core;

import java.util.ArrayList;

import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.EventPreview;
import com.google.gwt.user.client.ui.RootPanel;

public class EventManager implements EventPreview {
    // ------------------------------------------------------- CONSTANTES -- //

    public final static int KEY_BACKSPACE = 8, KEY_TAB = 9, KEY_RETURN = 13, KEY_ESC = 27, KEY_LEFT = 37,
            KEY_UP = 38, KEY_RIGHT = 39, KEY_DOWN = 40, KEY_DELETE = 46, KEY_HOME = 36, KEY_END = 35,
            KEY_PAGEUP = 33, KEY_PAGEDOWN = 34, KEY_INSERT = 45;

    // -------------------------------------------------------- ATTRIBUTS -- //

    private static EventManager instance = new EventManager();

    public ArrayList<EventPreview> hooks;

    // ---------------------------------------------------- CONSTRUCTEURS -- //

    private EventManager() {
        hooks = new ArrayList<EventPreview>();
        DOM.addEventPreview(this);

        RootPanel.get().sinkEvents(Event.KEYEVENTS);
        RootPanel.get().sinkEvents(Event.MOUSEEVENTS);
    }

    // --------------------------------------------------------- METHODES -- //

    public static void addEventHook(EventPreview hook) {
        instance.hooks.add(hook);
    }

    public static void removeEventHook(EventPreview hook) {
        instance.hooks.remove(hook);
    }

    public static ArrayList<EventPreview> getEventHooks() {
        return instance.hooks;
    }

    public boolean onEventPreview(Event event) {
        for (EventPreview hook : hooks)
            hook.onEventPreview(event);

        return true;
    }

    // ------------------------------------------------- METHODES PRIVEES -- //
}