ItemAnimatedListCellRenderer.java

/*******************************************************************************
 * Copyright (c) 2011-2012 Nokia Corporation
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * Comarch team - initial API and implementation
 *******************************************************************************/
package org.ned.client.view.renderer;

import com.sun.lwuit.Component;
import com.sun.lwuit.Display;
import com.sun.lwuit.Graphics;
import com.sun.lwuit.Label;
import com.sun.lwuit.List;
import com.sun.lwuit.layouts.BoxLayout;
import com.sun.lwuit.plaf.Style;
import java.util.Vector;
import org.ned.client.Content;
import org.ned.client.IContent;
import org.ned.client.utils.MediaTypeResolver;
import org.ned.client.utils.NedIOUtils;
import org.ned.client.view.style.NEDStyleToolbox;

/**
 *
 * @author damian.janicki
 */
public class ItemAnimatedListCellRenderer extends ListCellRendererBase {

    private static final int ICON_FIT_SIZE = 36;
    private static final int ICON_WIDTH = 32;
    private int position = 0;
    private int displayW;
    private String text = null;
    private String animatedText = "";
    private Label mMediaType;
    private Vector fileLists = null;

    public ItemAnimatedListCellRenderer() {
        super();
        if ( com.sun.lwuit.Display.getInstance().isTouchScreenDevice() ) {
            getStyle().setPadding( 10, 10, 2, 2 );
            getSelectedStyle().setPadding( 10, 10, 2, 2 );
        }
        if ( getPreferredH() < ICON_FIT_SIZE ) {
            setPreferredH( ICON_FIT_SIZE );
        }
        displayW = Display.getInstance().getDisplayWidth();

        setLayout( new BoxLayout( BoxLayout.X_AXIS ) );
        setWidth( displayW );
        setFocusable( true );
        mMediaType = new Label( " " );//must set some text to render properly
        final Style mediaTypeStyle = mMediaType.getStyle();
        final Style mediaTypeSelectedStyle = mMediaType.getSelectedStyle();
        mediaTypeStyle.setPadding( 0, 0, 0, 0 );
        mediaTypeStyle.setMargin( 0, 0, 0, 0 );
        mediaTypeStyle.setAlignment( Label.LEFT );
        mediaTypeStyle.setBgTransparency( 0 );

        mediaTypeSelectedStyle.setPadding( 0, 0, 0, 0 );
        mediaTypeSelectedStyle.setMargin( 0, 0, 0, 0 );
        mediaTypeSelectedStyle.setAlignment( Label.LEFT );

        mMediaType.setPreferredW( ICON_WIDTH );
        mMediaType.setCellRenderer( true );

        mTitle.setPreferredW( displayW - 2 * ICON_WIDTH );
        removeComponent( mTitle );

        addComponent( mMediaType );
        addComponent( mTitle );

    }

    public Component getListCellRendererComponent( List list, Object value, int index, boolean isSelected ) {

        IContent content = (IContent)value;

        mMediaType.setText( "" );
        mMediaType.setIcon( null );
        mMediaType.setIcon( MediaTypeResolver.getTypeIcon( content.getType() ) );

        if ( text == null || !text.equals( content.getText() ) ) {
            text = content.getText();
            mTitle.setText( text );
        }

        if ( content instanceof Content ) {
            if ( fileLists == null ) {
                fileLists = NedIOUtils.directoryListing( ((Content)content).getMediaFilePath() );
            }
        }

        if ( isSelected ) {
            setFocus( true );
            mTitle.getStyle().setFgColor( NEDStyleToolbox.WHITE );
            getStyle().setBgPainter( mSelectedPainter );
        } else {
            setFocus( false );
            mTitle.getStyle().setFgColor( NEDStyleToolbox.MAIN_FONT_COLOR );
            getStyle().setBgPainter( mUnselectedPainter );
        }
        return this;

    }

    public void setAnimatedText() {

        int width = mTitle.getStyle().getFont().stringWidth( text );

        if ( hasFocus() && (mTitle.getWidth() <= width) ) {
            animatedText = text + "         ";
            if ( position < animatedText.length() ) {

                String currentText = animatedText.substring( position );
                if ( mTitle.getStyle().getFont().stringWidth( currentText ) < mTitle.getWidth() ) {
                    currentText += text;
                }
                mTitle.setText( currentText );
                mTitle.setEndsWith3Points( false );
            }
        } else {
            mTitle.setEndsWith3Points( true );
        }

    }

    public void paint( Graphics g ) {
        setAnimatedText();
        super.paint( g );
    }

    public void resetPosition() {
        position = 0;
    }

    public void incrementPosition() {

        if ( position >= animatedText.length() ) {
            resetPosition();
        }
        position += 1;
    }
}