settingsscreen.java

一个关于沉船的J2ME小游戏

//
// Copyright 2002 Nokia Corporation
//
// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,
// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS
// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE
// OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE
// ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO
// OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR
// SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE
// RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT
// OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED
// BY THIRD PARTIES
//
// Furthermore, information provided in this source code is preliminary,
// and may be changed substantially prior to final release. Nokia Mobile
// Phones Ltd. retains the right to make changes to this source code at
// any time, without notice. This source code is provided for informational
// purposes only.
//
// Third-party brands and names are the property of their respective
// owners. Java(TM) and J2ME(TM) are registered trademarks of
// Sun Microsystems Inc.
//
// A non-exclusive, non-transferable, worldwide, limited license is hereby
// granted to the Licensee to download, print, reproduce and modify the
// source code. The licensee has the right to market, sell, distribute and
// make available the source code in original or modified form only when
// incorporated into the programs developed by the Licensee. No other
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// intellectual property rights is granted herein.
//


import javax.microedition.lcdui.*;


class SettingsScreen
    extends List
    implements CommandListener
{
    private final BlitzMIDlet midlet;
    private final Dictionary dict;
    private final Displayable previous;
    private final String soundSetting;
    private final String vibraSetting;


    SettingsScreen(BlitzMIDlet midlet, Dictionary dict,
                   Displayable previous)
    {
        super(dict.getString(Dictionary.LABEL_SETTINGS),
              List.IMPLICIT);
        this.midlet = midlet;
        this.dict = dict;
        this.previous = previous;

        // soundSetting: List index = 0
        soundSetting = dict.getString(Dictionary.LABEL_SOUND);
        String onOff = onOffString(Settings.getUseSound());
        append((soundSetting + " " + onOff),null);

        // vibraSetting: List index = 1
        vibraSetting = dict.getString(Dictionary.LABEL_VIBRATION);
        onOff = onOffString(Settings.getUseVibration());
        append((vibraSetting + " " + onOff), null);

        addCommand(new Command(dict.getString(Dictionary.LABEL_BACK),
                               Command.BACK, 1));
        setCommandListener(this);
    }


    public void commandAction(Command command, Displayable d)
    {
        if (command == List.SELECT_COMMAND)
        {
            switch (getSelectedIndex())
            {
                // soundSetting
                case 0:
                    midlet.settingsScreenEdit(soundSetting,
                        Settings.getUseSound());
                    break;

                // vibraSetting
                case 1:
                    midlet.settingsScreenEdit(vibraSetting,
                        Settings.getUseVibration());
                    break;
            }
        }
        else
        {
            // the application code only adds the Back command
            midlet.settingsScreenBack(previous);
        }
    }


    void setUseSound(boolean isOn)
    {
        // soundSetting: List index = 0
        String onOff = onOffString(Settings.getUseSound());
        set(0, (soundSetting + " " + onOff), null);
    }


    void setUseVibration(boolean isOn)
    {
        // vibraSetting: List index = 1
        String onOff = onOffString(Settings.getUseVibration());
        set(1, (vibraSetting + " " + onOff), null);
    }


    String onOffString(boolean isOn)
    {
        return dict.getString(isOn ? dict.LABEL_ON : dict.LABEL_OFF);
    }
}