IssuesListRenderer.java

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package ca.weblite.comiccl.view;

import ca.weblite.comiccl.model.Collection;
import ca.weblite.comiccl.model.Issue;
import com.codename1.ui.CheckBox;
import com.codename1.ui.Component;
import com.codename1.ui.Container;
import com.codename1.ui.Display;
import com.codename1.ui.EncodedImage;
import com.codename1.ui.Image;
import com.codename1.ui.Label;
import com.codename1.ui.List;
import com.codename1.ui.layouts.BorderLayout;
import com.codename1.ui.list.ListCellRenderer;
import com.codename1.ui.util.UITimer;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

/**
 *
 * @author shannah
 */
public class IssuesListRenderer extends Container implements ListCellRenderer {
    
    EncodedImage coverArt;
    Label coverArtIcon = new Label("");
    Label titleLabel = new Label("");
    CheckBox cb;
    Set<Image> pendingImages = new HashSet<Image>();
    UITimer timer = null;
    
    
    private int hdips(int pixels){
        return Display.getInstance().convertToPixels(pixels, true);
    }
    private int vdips(int pixels){
        return Display.getInstance().convertToPixels(pixels, false);
    }
    
    public IssuesListRenderer(){
        this.setLayout(new BorderLayout());
        this.addComponent(BorderLayout.WEST, coverArtIcon);
        this.addComponent(BorderLayout.CENTER, titleLabel);
        this.setUIID("IssuesListCell");
        cb = new CheckBox();
        this.addComponent(BorderLayout.EAST, cb);
        int prefWidth = Issue.getPreferredCoverArtWidth();
        
        if ( prefWidth >= 400 ){
            this.setPreferredH(4*160);
        } else if ( prefWidth >= 200){
            this.setPreferredH(2*160);
        } else {
            this.setPreferredH(160);
        }
        
        
        
        //this.getStyle().setPadding(3, 3, 100/hdips(1), 5);
        cb.setHeight(150);
        cb.setWidth(hdips(15));
        coverArtIcon.setIcon(Issue.getPlaceholderImage());
        
        //this.calcPreferredSize();
    }
    
    public Component getListCellRendererComponent(final List list, Object value, int index, boolean isSelected) {
        
        Map m = (Map)value;
        Issue issue = (Issue)m.get("issue");
        Collection coll = (Collection)m.get("collection");
        titleLabel.setText(issue.toString());
        coverArt = (EncodedImage)issue.getCoverImage();
       
        coverArtIcon.setIcon(coverArt);
        
        cb.setSelected(coll.hasIssue(issue));
        if ( coverArt != null && coverArt.getImageData() == null){
            //Log.p("Need to refresh cover art ");
            pendingImages.add(coverArt);
            
            if ( timer == null ){
                timer = new UITimer(new Runnable(){

                    public void run() {
                        if ( !pendingImages.isEmpty()){
                            ArrayList<Image> imgs = new ArrayList<Image>(pendingImages);
                            boolean needsUpdate = false;
                            for ( Image img : imgs ){
                                if ( img.animate() ){
                                    pendingImages.remove(img);
                                    needsUpdate = true;
                                }
                            }
                            
                            if ( needsUpdate ){
                                list.repaint();
                            }
                            if ( pendingImages.isEmpty()){
                                if ( timer != null ){
                                    
                                    timer.cancel();
                                    timer = null;
                                }
                            }
                        }
                    }

                });
                timer.schedule(200, true, list.getComponentForm());

            }
        }
        
        
        return this;
    }

    public Component getListFocusComponent(List list) {
        return this;
    }

    
    
    
    
    
    
}