// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.GWT.forms.client.components.nonpublic;

import org.litesoft.GWT.client.widgets.*;
import org.litesoft.GWT.client.widgets.nonpublic.*;
import org.litesoft.commonfoundation.typeutils.gregorian.*;
import org.litesoft.core.*;
import org.litesoft.core.simpletypes.temporal.*;

import com.google.gwt.user.client.*;
import com.google.gwt.user.client.ui.*;

public class TimePickerFieldsPanel extends HorizontalPanel
{
    private MyTimeField mHrs;
    private MyTimeField mMins = null;
    private MyTimeField mSecs = null;
    private MyTimeField mMilliSecs = null;

    public TimePickerFieldsPanel( String pPanelStyle, int pRequiredParts, HigherOrderAdjustable pAdjustable )
    {
        addStyleName( pPanelStyle );

        add( mHrs = new MyTimeField( 2, 24, pAdjustable ) );
        if ( pRequiredParts > 1 )
        {
            add( new Label( ":" ) );
            add( mMins = new MyTimeField( 2, 60, mHrs ) );
            if ( pRequiredParts > 2 )
            {
                add( new Label( ":" ) );
                add( mSecs = new MyTimeField( 2, 60, mMins ) );
                if ( pRequiredParts > 3 )
                {
                    add( new Label( "." ) );
                    add( mMilliSecs = new MyTimeField( 3, 1000, mSecs ) );
                }
            }
        }
    }

    public SimpleTime getSimpleTime()
    {
        if ( mMilliSecs != null )
        {
            return new SimpleTime( mHrs.getIntValue(), mMins.getIntValue(), mSecs.getIntValue(), mMilliSecs.getIntValue() );
        }
        if ( mSecs != null )
        {
            return new SimpleTime( mHrs.getIntValue(), mMins.getIntValue(), mSecs.getIntValue() );
        }
        if ( mMins != null )
        {
            return new SimpleTime( mHrs.getIntValue(), mMins.getIntValue() );
        }
        return new SimpleTime( mHrs.getIntValue() );
    }

    public void setTimeFields( UtilDateAdaptor pTime )
    {
        mHrs.setIntValue( pTime.getHour() );
        if ( mMins != null )
        {
            mMins.setIntValue( pTime.getMin() );
            if ( mSecs != null )
            {
                mSecs.setIntValue( pTime.getSec() );
                if ( mMilliSecs != null )
                {
                    mMilliSecs.setIntValue( pTime.getMilliSec() );
                }
            }
        }
    }

    private static class MyTimeField extends Composite implements HigherOrderAdjustable
    {
        private MyTextBox zField;
        private int mUpperLimit;
        private HigherOrderAdjustable mHigherPart;

        public MyTimeField( int pDigits, int pUpperLimit, HigherOrderAdjustable pHigherPart )
        {
            mHigherPart = (pHigherPart != null) ? pHigherPart : HigherOrderAdjustable.NULL;
            mUpperLimit = (pUpperLimit > 0) ? pUpperLimit : 0;

            HorizontalPanel zHpanel = new HorizontalPanel();

            int zUniqueID = StaticSimpleIdSource.getNext();

            String upCellId = "upId" + zUniqueID;
            String downCellId = "downId" + zUniqueID;
            HTMLPanel zButtonsPanel = new HTMLPanel( "<div class='litesoft-TimeFieldUpArrowImageButton_border'><div class='litesoft-TimeFieldUpArrowImageButton' id=" + upCellId + "></div></div><div class='litesoft-TimeFieldUpArrowImageButton_border'><div class='litesoft-TimeFieldUpArrowImageButton' id=" + downCellId + "></div></div>" );

            zButtonsPanel.add( new UpDownButton( 1 ), upCellId );
            zButtonsPanel.add( new UpDownButton( -1 ), downCellId );

            zHpanel.add( zField = new MyTextBox( pDigits ) );
            zHpanel.add( zButtonsPanel );

            initWidget( zHpanel );
        }

        public int getIntValue()
        {
            return zField.getIntValue();
        }

        public void setIntValue( int pValue )
        {
            zField.setIntValue( pValue );
        }

        @Override
        public void adjustValue( int pAdjustBy )
        {
            int tmp = getIntValue() + pAdjustBy;
            while ( tmp < 0 )
            {
                tmp += mUpperLimit;
                if ( mHigherPart != null )
                {
                    mHigherPart.adjustValue( -1 );
                }
            }
            while ( mUpperLimit <= tmp )
            {
                tmp -= mUpperLimit;
                if ( mHigherPart != null )
                {
                    mHigherPart.adjustValue( 1 );
                }
            }
            setIntValue( tmp );
        }

        private class UpDownButton extends TransparentImage implements MouseListener
        {
            private int mAdjustBy;
            private String mTimeFieldArrowImageButton_over, mTimeFieldArrowImageButton_border_over, //
                    mTimeFieldArrowImageButton, mTimeFieldArrowImageButton_border;

            public UpDownButton( int pAdjustBy )
            {
                mAdjustBy = pAdjustBy;
                String zBaseStyle;
                if ( mAdjustBy < 0 )
                {
                    zBaseStyle = "litesoft-TimeFieldDownArrowImage";
                    mTimeFieldArrowImageButton_over = "litesoft-TimeFieldDownArrowImageButton-over";
                    mTimeFieldArrowImageButton_border_over = "litesoft-TimeFieldDownArrowImageButton_border-over";
                    mTimeFieldArrowImageButton = "litesoft-TimeFieldDownArrowImageButton";
                    mTimeFieldArrowImageButton_border = "litesoft-TimeFieldDownArrowImageButton_border";
                }
                else
                {
                    zBaseStyle = "litesoft-TimeFieldUpArrowImage";
                    mTimeFieldArrowImageButton_over = "litesoft-TimeFieldUpArrowImageButton-over";
                    mTimeFieldArrowImageButton_border_over = "litesoft-TimeFieldUpArrowImageButton_border-over";
                    mTimeFieldArrowImageButton = "litesoft-TimeFieldUpArrowImageButton";
                    mTimeFieldArrowImageButton_border = "litesoft-TimeFieldUpArrowImageButton_border";
                }
                setStyleName( zBaseStyle );
                setWidth( "11" );
                setHeight( "6" );
                addMouseListener( this );
            }

            @Override
            public void onMouseDown( Widget sender, int x, int y )
            {
                Element innerBorderBox = DOM.getParent( getElement() );
                Element outerBorderBox = DOM.getParent( innerBorderBox );

                CommonElementHelper.setStyleClass( innerBorderBox, mTimeFieldArrowImageButton_over );
                CommonElementHelper.setStyleClass( outerBorderBox, mTimeFieldArrowImageButton_border_over );

                adjustValue( mAdjustBy );
                startTimer();
            }

            @Override
            public void onMouseEnter( Widget sender )
            {
            }

            @Override
            public void onMouseLeave( Widget sender )
            {
            }

            @Override
            public void onMouseMove( Widget sender, int x, int y )
            {
            }

            @Override
            public void onMouseUp( Widget sender, int x, int y )
            {
                Element innerBorderBox = DOM.getParent( getElement() );
                Element outerBorderBox = DOM.getParent( innerBorderBox );

                CommonElementHelper.setStyleClass( innerBorderBox, mTimeFieldArrowImageButton );
                CommonElementHelper.setStyleClass( outerBorderBox, mTimeFieldArrowImageButton_border );

                stopTimer();
            }

            @Override
            protected void onDetach()
            {
                stopTimer();
                super.onDetach();
            }

            private MyTimer mTimer = null;

            private void startTimer()
            {
                if ( mTimer == null )
                {
                    mTimer = new MyTimer();
                }
                mTimer.init();
            }

            private void stopTimer()
            {
                if ( mTimer != null )
                {
                    mTimer.cancel();
                }
            }

            private class MyTimer extends Timer
            {
                public static final int MIN_DELAY = 25;
                public static final int DELAY_ADJUST = 10;

                private int mDelay;

                public void init()
                {
                    schedule( mDelay = 200 );
                }

                @Override
                public void run()
                {
                    adjustValue( mAdjustBy );
                    if ( (mDelay -= DELAY_ADJUST) < MIN_DELAY )
                    {
                        mDelay = MIN_DELAY;
                    }
                    schedule( mDelay );
                }
            }
        }
    }

    private static class MyTextBox extends TextBox
    {
        private int mDigits;

        public MyTextBox( int pDigits )
        {
            mDigits = pDigits;
            setWidth( mDigits + "em" );
            setEnabled( false );
            //noinspection GWTStyleCheck
            addStyleName( "litesoft-TimeField" );
            setIntValue( 0 );
        }

        public int getIntValue()
        {
            return Integer.parseInt( getText() );
        }

        public void setIntValue( int pValue )
        {
            String zText = Integer.toString( pValue );
            while ( mDigits > zText.length() )
            {
                zText = "0" + zText;
            }
            setText( zText );
        }
    }
}