comparison src/samer/core_/util/swing/Frame.java @ 0:bf79fb79ee13

Initial Mercurial check in.

+/*
+ *	Frame.java	
+ *
+ *	Copyright (c) 2000, Samer Abdallah, King's College London.
+ *	All rights reserved.
+ *
+ *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
+ *	without even the implied warranty of MERCHANTABILITY or 
+ *	FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+package samer.core.util.swing;
+import  samer.core.*;
+import  java.awt.*;
+import  java.awt.event.*;
+import  javax.swing.*;
+
+/** 
+	<p>
+	This is a useful kind of framed window that uses 
+	the property set to get window size and position
+	and colours. It can also send window closing events
+	to the default command handler (see Agency) as
+	"exit" actions.
+
+	<p>
+	Addition: frame can dispose of itself when last component
+	is removed.
+ */
+
+public class Frame extends JFrame 
+	implements ComponentListener, ActionListener, Shell.Window
+{
+	Node node;
+
+	public Frame() { this("frame"); }
+	public Frame( String nm) {
+		// remove "." from start of name
+		if (nm.startsWith(".")) nm=nm.substring(1);
+		node=new Node(nm); init();
+	}
+
+	public Container container() { return getContentPane(); }
+	public void dispose() { super.dispose(); }
+
+	public void	expose() {
+		// this makes sure we don't show a zero-sized window
+		if (getBounds().isEmpty()) pack();
+		setVisible(true);
+	}
+
+	public Node getNode() { return node; }
+
+	// ..... Event Listener bits .......
+
+	public void componentHidden(ComponentEvent e) {}
+	public void componentShown(ComponentEvent e) {}
+	public void componentMoved(ComponentEvent e) { savepos(); }
+	public void componentResized(ComponentEvent e) { savepos(); }
+	public void actionPerformed(ActionEvent e) {
+		if (e.getActionCommand().equals("pack")) pack();
+	}
+
+	// override pack to stop window being bigger than screen
+	public void pack() {
+		super.pack();
+		
+		Dimension d=getToolkit().getScreenSize();
+		Rectangle b=getBounds();
+		boolean	f=false;
+		if (b.y+b.height>d.height) {
+			b.height=d.height-b.y;
+			b.width+=16; // this is to make room for vertical scroll bar (hack - sorry)
+			f=true;
+		}
+		if (b.x+b.width>d.width) { b.width=d.width-b.x; f=true; }
+		if (f) setBounds(b);
+	}	
+
+	// ........... private bits ...............
+
+	private void savepos() { X.store(node.fullNameFor("bounds"),getBounds()); }
+
+	private void init()
+	{
+		Shell.push(node);
+		try {
+			String	tit = Shell.getString("title",null);
+			Color		bg  = Shell.getColor("background",SystemColor.control);
+			Color		fg  = Shell.getColor("foreground",SystemColor.controlText);
+			Rectangle pos = X.rect(Shell.datum("bounds"),null);
+			// Font		font = X.font(Shell.datum("font"),null);
+
+			if (tit!=null) setTitle(tit);
+			else {
+				// remove "." from start of name
+				String n=node.fullName();
+				if (n.startsWith(".")) n=n.substring(1);
+				// remove ".window" from end of name
+				if (n.endsWith(".window")) n=n.substring(0,n.length()-7);
+				setTitle(n);
+			}
+
+			if (pos!=null) setBounds(pos);
+			// if (font!=null) setFont(font);
+
+			// setBackground(bg);
+			// setForeground(fg);
+		} finally { Shell.pop(); }
+
+		setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
+
+		JPopupMenu p=new JPopupMenu( "Frame");
+		p.add("pack").addActionListener(this);
+
+		addComponentListener(this);
+		MenuBuilder.addPopup(p,getContentPane()).setBackstop(true);
+	}
+
+	
+}
+