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/*
 * Copyright (c) 2008, Kevin Stembridge
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.moneydance.modules.features.forecaster;

import java.awt.Image;
import java.awt.Toolkit;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;

import com.moneydance.apps.md.controller.FeatureModule;
import com.moneydance.modules.features.forecaster.homepage.ForecasterHomePageController;
import com.moneydance.modules.features.forecaster.util.AccountHelper;
import com.moneydance.modules.features.forecaster.window.ForecastWindowController;

/**
 * This is a Moneydance feature module that allows the user to view a balance forecast 
 * for 1 or more of their accounts over a given period of time into the future. The 
 * forecast is based on transaction reminders that have been registered against the accounts.
 * 
 * @author <a href="mailto:kevin.stembridge.dev@gmail.com">Kevin Stembridge</a>
 * @author $LastChangedBy$
 * @version $Revision$
 * @since 27 Nov 2008
 *
 *
 */
public class Main extends FeatureModule {
    
    public static final String APP_TITLE = "Forecaster";
    private static final String COMMAND_SHOW_CONSOLE = "showconsole";
    
    private ForecastWindowController forecastWindowController;
    private ForecasterHomePageController forecastHomePageController;
    private AccountHelper accountHelper;
	
	
	/**
	 * Creates a new uninitialized Main.
	 */
	public Main() {
	    //do nothing
	}

	
	@Override
    public void init() {

	    this.forecastHomePageController = new ForecasterHomePageController(getContext(), getAccountHelper());
	    
		try {
		    getContext().registerFeature(this, COMMAND_SHOW_CONSOLE, getIcon(), getName());
			getContext().registerHomePageView(this, this.forecastHomePageController);
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	
	@SuppressWarnings("unused")
    private Image getIcon() {

	    if (true) {
	        //Just return null until a decent icon has been created
	        return null;
	    }
	    
		try {
			ClassLoader cl = getClass().getClassLoader();
			InputStream in = cl.getResourceAsStream("/com/moneydance/modules/features/forecaster/icon.gif");
			
			if (in != null) {
				ByteArrayOutputStream bout = new ByteArrayOutputStream(1000);
				byte buf[] = new byte[256];
				int n = 0;
	
				while ((n = in.read(buf, 0, buf.length)) >= 0) {
					bout.write(buf, 0, n);
				}
				
				return Toolkit.getDefaultToolkit().createImage(bout.toByteArray());
				
			}
			
		} catch (Throwable e) {
		    e.printStackTrace();
		}
		
		return null;
		
	}


	@Override
    public String getName() {
		return APP_TITLE;
	}

	
	/** 
	 * Process an invocation of this module with the given URI. This is expected to
	 * be invoked from the EDT.
	 */
	@Override
    public void invoke(String uri) {
	    
		String command = uri;
		int theIdx = uri.indexOf('?');
		
		if (theIdx >= 0) {
			command = uri.substring(0, theIdx);
		} else {
			theIdx = uri.indexOf(':');
			if (theIdx >= 0) {
				command = uri.substring(0, theIdx);
			}
		}
		
		if (command.equals(COMMAND_SHOW_CONSOLE)) {
			showConsole();
		}
		
	}
	

	/**
	 * Ensures that the datasetManager and forecastWindow are initialized then
	 * displays the window.
	 */
	private void showConsole() {
	    
        if (this.forecastWindowController == null) {
            this.forecastWindowController = new ForecastWindowController(getContext(), getAccountHelper());
        }
		
		this.forecastWindowController.show();
		
	}
	
    
    @Override
    public void cleanup() {

        this.forecastWindowController.closeForecaster();
        this.forecastHomePageController.closeForecaster();
        
    }
    
    
    private AccountHelper getAccountHelper() {
        
        if (this.accountHelper == null) {
            this.accountHelper = new AccountHelper(getContext());
        }
        
        return this.accountHelper;
        
    }

        

}