source: gs3-extensions/atlas-src/trunk/src/org/greenstone/client/StatusBar.java@ 22272

package org.greenstone.client;

import java.util.ArrayList;
import java.util.HashMap;

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

public class StatusBar
{
    private HashMap<String, Integer> _ids = new HashMap<String, Integer>();
    private HTML _statusBarDiv = new HTML();
    private ArrayList<String> _statusUpdates = new ArrayList<String>();
    
    public StatusBar()
    {
        _statusBarDiv.setStyleName("statusBar");
    }
    
    public void addUpdate(String update, String id)
    {
        GS3MapLibrary.logToConsole("Got update -> " + update + " - " + id);
        
        if(_ids.get(id) != null)
        {
            return;
        }

        for(int j = 0; j < _statusUpdates.size(); j++)
        {
            if(_statusUpdates.get(j) == null)
            {

                _statusUpdates.add(j, update);
                _ids.put(id, j);
                updateStatusBar();
                return;
            }
        }
        
        _ids.put(id, _statusUpdates.size());
        _statusUpdates.add(update);
        updateStatusBar();
    }
    
    public boolean removeUpdate(String updateId)
    {
        Integer index = _ids.get(updateId);
        if(index == null)
        {
            return false;
        }
        
        _ids.remove(updateId);
        _statusUpdates.set(index, null);
        updateStatusBar();
        return true;
    }
    
    private void updateStatusBar()
    {   
        String status = "";
        boolean noStatusUpdate = true;
        
        for(int j = 0; j < _statusUpdates.size(); j++)
        {
            if(_statusUpdates.get(j) != null)
            {
                if(noStatusUpdate)
                {
                    noStatusUpdate = false;
                }
                else
                {
                    status += " <br/> ";
                }
                
                status += _statusUpdates.get(j);
            }
        }
        
        if(!status.equals(""))
        {
            GS3MapLibrary.logToConsole("Adding progress image");
            status += "<br/><img src=\"http://localhost:8080/GS3MapLibrary/images/progress.gif\"></img>"; 
        }
        _statusBarDiv.setHTML(status);
    }
    
    public HTML getStatusBarDiv()
    {
        return _statusBarDiv;
    }
}