jcurses.widgets.WindowManager Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jcurses Show documentation
Internal Version of JCurses for use with Kolja. For projects please use http://sourceforge.net/projects/javacurses/
The newest version!
/* -*- tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
package jcurses.widgets;

import java.util.ArrayList;

import jcurses.system.CharColor;
import jcurses.system.InputChar;
import jcurses.system.Toolkit;
import jcurses.util.Rectangle;

/**
 * This class is a jcurses-internal class, whose task is 
 * to manage jcurses text based windows. It schouldn't be used writing applications. 
 */
class WindowManager {
	
	
	private static java.util.List __windowsStack = new ArrayList();
	
	private static CharColor __defaultScreenColors = new CharColor(CharColor.BLUE, CharColor.BLUE);
	private static CharColor __colors = getDefaultScreenColors();
	
	/**
	 * Method to be used by external threads wishing to perform
	 * safe calls to jcurses widgets. Access to this method is
	 * provided from WidgetUtilities.invokeAndWait().
	 *
	 * @param r a Runnable containing the code to be
	 * executed in a thread-safe manner.
	 */
	static synchronized void invokeAndWait(Runnable r) {
		r.run();
	}

	public static CharColor getScreenColors() {
		return __colors;
	}
	
	public static void setScreenColors(CharColor colors) {
		__colors = colors;
	}
	
	
	protected static CharColor getDefaultScreenColors() {
		return __defaultScreenColors; 
	}
	
	
	
	
	protected static void createWindow(Window w) {
		if (__windowsStack.size() == 0) {
			init();
		}
		__windowsStack.add(w);
	}
	
	
	
	protected static void removeWindow(Window w) {
		if (__windowsStack.indexOf(w)!=-1) {
			removeWindowFromScreen(w);
			  __windowsStack.remove(w);
			w.closed();
			if (getTopWindow() == null) {
				shutdown();
			} else {
				getTopWindow().activate();
			}
		}
	}
	
	
	
	
	protected static void makeWindowVisible(Window w, Window oldTop) {
		Toolkit.startPainting();
		if (__windowsStack.indexOf(w)!=-1) {
			int index = __windowsStack.indexOf(w);
			for (int i=index; i<__windowsStack.size(); i++) {
			  	Window aw = __windowsStack.get(i);
				if (aw.isVisible()) {
					aw.paint();
				}
			}
			
		}
		
		if (getTopWindow()!=oldTop) {
			if (oldTop!=null) {
				oldTop.deactivate();
			}
			getTopWindow().activate();
		}
		Toolkit.endPainting();
	}
	

	
	protected static void makeWindowInvisible(Window w, Window oldTop) {
		if (__windowsStack.indexOf(w)!=-1) {
			if (getTopWindow() == null) {
				shutdown();
			} else {
			  removeWindowFromScreen(w);
			  if (w == oldTop) {
			  	w.deactivate();
				if (getTopWindow() == null) {
					getTopWindow().activate();
				}
			  }
			}
		}
	}
	
	
	
    
	
	private static void removeWindowFromScreen(Window w) {
		Toolkit.startPainting();
		int index = __windowsStack.indexOf(w);
		if (!wasPartVisible(index)) {
			Toolkit.endPainting();
			return;
		}
		Rectangle rect = w.getRectangle();
		if (w.hasShadow()) {
			rect = ((Rectangle)rect.clone());
			rect.resize(rect.getWidth()+1, rect.getHeight()+1);
		}
		Toolkit.drawRectangle(rect, getScreenColors());
		for (int i=0; i