package org.activityinfo.ui.client.page.app;

/*
 * #%L
 * ActivityInfo Server
 * %%
 * Copyright (C) 2009 - 2013 UNICEF
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version.
 * 
 * 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public 
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import com.extjs.gxt.ui.client.core.El;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.Widget;

public class SectionPopup extends PopupPanel {

    private static SectionPopupUiBinder uiBinder = GWT.create(SectionPopupUiBinder.class);

    interface SectionPopupUiBinder extends UiBinder<Widget, SectionPopup> {
    }

    private Timer popupTimer;

    public SectionPopup() {
        setWidget(uiBinder.createAndBindUi(this));

        popupTimer = new Timer() {

            @Override
            public void run() {
                if (isVisible()) {
                    hide();
                } else {
                    show();
                }
            }
        };
        sinkEvents(Event.MOUSEEVENTS);
    }

    public void delayedHide() {
        clearExistingTimer();
        popupTimer = new Timer() {

            @Override
            public void run() {
                hide();
            }
        };
        popupTimer.schedule(250);
    }

    public void delayedShow() {
        clearExistingTimer();
        popupTimer = new Timer() {

            @Override
            public void run() {
                show();
            }
        };
        popupTimer.schedule(250);
    }

    private void clearExistingTimer() {
        if (popupTimer != null) {
            popupTimer.cancel();
        }
    }

    @Override
    public void onBrowserEvent(Event event) {
        El.fly(Element.as(event.getEventTarget()));

        switch (DOM.eventGetType(event)) {
            case Event.ONMOUSEOVER:
                clearExistingTimer();
                break;
            case Event.ONMOUSEOUT:
                delayedHide();
                break;
        }
    }

}