source: other-projects/GlamED/trunk/src/org/honours/CollectionSpace/CollectionSpace.java@ 26638

package org.honours.CollectionSpace;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;

import org.expeditee.actions.Navigation;
import org.expeditee.gui.Frame;
import org.expeditee.gui.FrameIO;
import org.expeditee.gui.MessageBay;
import org.expeditee.items.ItemParentStateChangedEvent;
import org.expeditee.items.Picture;
import org.expeditee.items.Text;
import org.honours.agents.GenerateThumbnails;
import org.honours.collection.Collection;
import org.honours.gui.HonoursFrameIO;
import org.honours.items.PictureInformation;

public class CollectionSpace {
    
    //the collection this collection space is associated with
    private Collection _associatedCollection;
    
    private String _name;
    
    //FOr storing thumbnails for the collection space
    private String _thumbnailsDirectory;
    
    private List<Picture> _thumbnails = new ArrayList<Picture>();
    
    private int _startX = 150;
    private int _startY = 150;
    
    public static final int _gap = 20;
    public static final int _columns = 4;
    public static final int _imageSize = 150;
    public static final int _rows = 3;
    
    public CollectionSpace(){
        
    }
    
    public CollectionSpace(Collection associatedCollection){
        _associatedCollection = associatedCollection;
        _name = "collectionspace-" + _associatedCollection.getName();
        _thumbnailsDirectory = "expeditee" + File.separator + "thumbnails-" +
        _associatedCollection.getName();
    }
    
    public void setAssociatedCollection(Collection assocCollection){
        _associatedCollection = assocCollection;
    }
    
    public Collection getAssociatedCollection(){
        return _associatedCollection;
    }
    
    public void setName(String name){
        _name = name;
    }
    
    public String getName(){
        return _name;
    }
    
    public void setThumbnailsDirectory(String dir){
        
        _thumbnailsDirectory = dir;
        
    }
    
    public String getThumbnailsDirectory(){
        return _thumbnailsDirectory;
    }
    
    public void generate(){
        try{
            
        if(_thumbnailsDirectory == null){
            
            MessageBay.errorMessage("ERROR: No thumbnails directory set up so cannot generate CollectionSpace. Try running the GenerateThumbnails agent first before generating the Collection Space.");
            
            return;
        }

        if(!new File(_thumbnailsDirectory).exists()){
            GenerateThumbnails gt = new GenerateThumbnails();
            Frame toLoad = FrameIO.LoadFrame(_associatedCollection + "1");
            System.err.println("*** _associatedCollection = " + _associatedCollection);
            System.err.println("*** toLoad = " + toLoad);
            gt.process(FrameIO.LoadFrame(_associatedCollection.getName() + "1"));
        }
        
        //generate actual collectionSpace frameset using _name.
        createCollectionSpace();
        
        //Open thumbnails.inf file.
        BufferedReader br = new BufferedReader(new FileReader(
                _thumbnailsDirectory + File.separator +
                "thumbnails.inf"));
        String line;
        
        while((line = br.readLine()) != null){
            
            String[] split = line.split(",");
            
            //1st entry in split is filename, 2nd is associated frame name.
            Text imageSource = new Text("@i: " + split[0] + " 1.0");
            Picture newPic = PictureInformation.getPicture(imageSource);
            
            //Remove "thumbnail." from value in split[1].
            //String picLink = split[1].substring("thumbnail.".length());
            
            newPic.setLink(split[1]);
            //newPic.setLink(picLink);
            _thumbnails.add(newPic);
        }
        br.close();
        
        writeThumbnails();
        
        MessageBay.displayMessage("Collection Space generated!");
        
        Navigation.Goto(_name + "1");
        
        }catch(Exception e){
            e.printStackTrace();
        }
        
    }
    
    /** Method to output thumbnails into collection space **/
    private void writeThumbnails(){
        
        Frame currFrame = null;
        int currX = _startX;
        int currY = _startY;
        
        int frameIter = 1;
        
        generateNavigationLinks(frameIter);
        generateDropBox(frameIter);
        
        for(int i = 0; i < _thumbnails.size(); i++)
        {
            Picture currPic = _thumbnails.get(i);
            
            if(i % _columns ==0 && i == 0){
                
            }else if(i % _columns == 0 && i > 0){
                currX = _startX;
                currY += _gap + _imageSize;
            }else{
                currX += _gap + _imageSize;
            }
            
            //Create a new frame to display next lot of items.
            if(i % (_columns * _rows) == 0 && i < _columns * _rows){
                currFrame = FrameIO.LoadFrame(_name + frameIter);
                
            }else if(i % (_columns * _rows) == 0 && i >= _columns * _rows){
                frameIter++;
                Frame check = FrameIO.LoadFrame(_name + frameIter);
                if(check == null){
                    //create new frame
                    HonoursFrameIO.generateFrame(frameIter, _name);
                    currFrame = FrameIO.LoadFrame(_name + frameIter);
                    
                    currX = _startX;
                    currY = _startY;
                    generateNavigationLinks(frameIter);
                    generateDropBox(frameIter);
                }

            }
            
            currFrame.addText(currX, currY, currPic.getSource().getText(),
                    null, currPic.getLink());
            currFrame.setSaved();
        }
        
        _associatedCollection.setCollectionSpace(this);
    }
    
    private void generateNavigationLinks(int frameIter){
        
        String backText = "<<";
        String forwardText = ">>";
        
        int backButtonX = _startX/2;
        int forwardButtonX = _startX + (_columns*_gap)+(_columns*_imageSize);
        int buttonPosY = ((_rows*_imageSize) + (_rows*_gap))/2;
        
        Frame currFrame = FrameIO.LoadFrame(_name+frameIter);
        currFrame.addText(backButtonX,buttonPosY,backText,"RotateBack");
        currFrame.addText(forwardButtonX,buttonPosY,forwardText,"RotateNext");
        currFrame.setSaved();
    }
    
    private void generateDropBox(int frameIter){
        int maxRowLength = _startX + (_columns * _imageSize) + ((_columns-1)* _gap);
        
        //the maximum height of the area displaying all the rows.
        int maxRowsAreaHeight = _startY + (_rows * _imageSize) + ((_rows-1)*_gap);
        
        int dropBoxGap = 80;
        
        int dropBoxStartX = maxRowLength + (dropBoxGap*2);
        int dropBoxStartY = _startY;
        
        int dropBoxWidth = 300;
        int dropBoxHeight = maxRowsAreaHeight;
        
        Frame currFrame = FrameIO.LoadFrame(_name + frameIter);
        
        String dropBoxSourceText = "@iw: org.honours.widgets.CollectionSpaceDropBox " + dropBoxWidth + " " + dropBoxHeight;
        Text newText = currFrame.addText(dropBoxStartX, dropBoxStartY, dropBoxSourceText, null);
        newText.onParentStateChanged(new ItemParentStateChangedEvent(currFrame, ItemParentStateChangedEvent.EVENT_TYPE_ADDED));

        currFrame.setSaved();
    }
    
    private void createCollectionSpace(){
        Frame check = FrameIO.LoadFrame(_name + "1");
        
        if(check != null){
            FrameIO.deleteFrameset(_name);
        }
        
        try{
            FrameIO.CreateNewFrameset(_name);
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}