RailwayRouteOptimization/scripts/Window/PreviousWindow/PreviousWindow.js

/**
 * Copyright (c) 2011-2018 by Andrew Mustun. All rights reserved.
 * 
 * This file is part of the QCAD project.
 *
 * QCAD 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.
 *
 * QCAD 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 QCAD.
 */

include("scripts/Window/Window.js");

function PreviousWindow(guiAction) {
    Window.call(this, guiAction);
}

PreviousWindow.prototype = new Window();

PreviousWindow.prototype.beginEvent = function() {
    Window.prototype.beginEvent.call(this);
    var mdiArea = EAction.getMdiArea();

    // part of the workaround for QMdiArea bug
    // with events filtering through all stacked windows:
    if (RSettings.getQtVersion()>=0x060000) {
        mdiArea.activatePreviousSubWindow();
    }
    else {
        var windows = mdiArea.subWindowList();
        var activeWindow = mdiArea.activeSubWindow();
        if (!isNull(activeWindow)) {
            var i = windows.indexOf(activeWindow);
            i--;
            i = i.mod(windows.length);
            if (!isNull(windows[i])) {
                windows[i].show();
                mdiArea.setActiveSubWindow(windows[i]);
            }
        }
    }
    this.terminate();
};