Brainstorm/Foundation SWT/src/com/foundation/view/swt/SwtViewContext.java

/*
 * Copyright (c) 2005,2006 Declarative Engineering LLC.
 * All rights reserved.  This program and the accompanying materials
 * are made available under the terms of the Declarative Engineering LLC
 * verson 1 which accompanies this distribution, and is available at
 * http://declarativeengineering.com/legal/DE_Developer_License_v1.txt
 */
package com.foundation.view.swt;

import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Display;

import com.common.comparison.Comparator;
import com.common.util.LiteHashMap;
import com.foundation.view.DisplayMetadata;
import com.foundation.view.IViewContext;
import com.foundation.view.IViewRequestHandler;
import com.foundation.view.ViewSystemMetadata;

/**
 * This class provides access to the non-view specific view system functionality.
 */
public class SwtViewContext implements IViewContext {
	/** The one and only SWT view context object. */
	private static final SwtViewContext singleton = new SwtViewContext();
	/** An application data map that allows the application to store key value pairs associated with the view context. */
	private LiteHashMap applicationDataMap = null;
	/** The application specific context data. */
	private Object applicationData = null;
/**
 * SwtViewContext constructor.
 */
private SwtViewContext() {
	super();
}//SwtViewContext()//
/**
 * Gets the one and only instance of the swt view context.
 * @return The view context which provides access to the non-view specific view system functionality.
 */
public static SwtViewContext getSingleton() {
	return singleton;
}//getSingleton()//
/**
 * Gets the display for the swt view context.
 * @return The swt view display.
 */
public Display getDisplay() {
	return EventLoop.getSingleton().getDisplay();
}//getDisplay()//
/* (non-Javadoc)
 * @see com.foundation.view.IViewContext#getViewSystemMetadata()
 */
public ViewSystemMetadata getViewSystemMetadata() {
	org.eclipse.swt.widgets.Monitor[] monitors = getDisplay().getMonitors();
	DisplayMetadata[] displayMetadata = new DisplayMetadata[monitors.length];
	ViewSystemMetadata viewSystemMetadata = new ViewSystemMetadata(displayMetadata);
	
	//Collect information about each monitor.//
	for(int monitorIndex = 0; monitorIndex < monitors.length; monitorIndex++) {
		Rectangle bounds = monitors[monitorIndex].getBounds();
		Rectangle clientArea = monitors[monitorIndex].getClientArea();
		displayMetadata[monitorIndex] = new DisplayMetadata(new int[] {bounds.x, bounds.y, bounds.width, bounds.height}, new int[] {clientArea.x, clientArea.y, clientArea.width, clientArea.height});
	}//for//
	
	return viewSystemMetadata;
}//getViewSystemMetadata()//
/* (non-Javadoc)
 * @see com.foundation.view.IViewContext#getRequestHandler()
 */
public IViewRequestHandler getRequestHandler() {
	return EventLoop.getSingleton();
}//getRequestHandler()//
/* (non-Javadoc)
 * @see com.foundation.view.IViewContext#getApplicationData()
 */
public Object getApplicationData() {
	return applicationData;
}//getApplicationData()//
/* (non-Javadoc)
 * @see com.foundation.view.IViewContext#setApplicationData(java.lang.Object)
 */
public void setApplicationData(Object applicationData) {
	this.applicationData = applicationData;
}//setApplicationData()//
/* (non-Javadoc)
 * @see com.foundation.view.IViewContext#getApplicationData(java.lang.Object)
 */
public Object getApplicationData(Object key) {
	return applicationDataMap == null ? null : applicationDataMap.get(key);
}//getApplicationData()//
/* (non-Javadoc)
 * @see com.foundation.view.IViewContext#setApplicationData(java.lang.Object, java.lang.Object)
 */
public void setApplicationData(Object key, Object applicationData) {
	if(applicationDataMap == null) {
		applicationDataMap = new LiteHashMap(10, Comparator.getLogicalComparator(), Comparator.getLogicalComparator());
	}//if//
	
	applicationDataMap.put(key, applicationData);
}//setApplicationData()//
/**
 * Shuts down the swt event loop, freeing the thread and allowing the application to close gracefully.
 */
public void shutdown() {
	new Thread(new Runnable() {
		public void run() {
			EventLoop.getSingleton().stop();
		}//run()//
	}).start();
}//shutdown()//
}//SwtViewContext//