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/*
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ZZWindows.java
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*
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* Copyright (c) 2000, Ted Nelson and Tuomas Lukka
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*
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* You may use and distribute under the terms of either the GNU Lesser
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* General Public License, either version 2 of the license or,
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* at your choice, any later version. Alternatively, you may use and
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* distribute under the terms of the XPL.
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*
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* See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of
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* the licenses.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the README
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* file for more details.
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*
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*/
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/*
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* Written by Tuomas Lukka, killing by Antti-Juhani Kaijanaho,
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* triggering and rootwin support by Rauli Ruohonen
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*/
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package org.gzigzag;
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import java.awt.*;
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import java.awt.event.*;
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import java.util.*;
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public class ZZWindows {
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public static final String rcsid = "$Id: ZZWindows.java,v 1.23 2001/01/03 16:47:50 raulir Exp $";
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public static boolean dbg = false;
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private static void p(String s) { if(dbg) ZZLogger.log(s); }
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private static void pa(String s) { ZZLogger.log(s); }
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/** Iff null, creates Frames at top level. */
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private static Container rootwin;
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private static ZZSpace rspace;
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private static Hashtable views, frames, ex;
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private static ZZObs obs = new ZZObs() { public void chg() { update(); }};
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/** Must be called before anything else. */
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public static void init(ZZSpace s,Container rootWin) {
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rootwin=rootWin;
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rspace=s;
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if(views!=null) updateEnd();
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views=new Hashtable();
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frames=new Hashtable();
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ex=new Hashtable();
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ZZObsTrigger.chg(obs);
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}
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public static synchronized void update() {
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p("update() start");
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ZZCell rcell=startCell();
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if(rcell==null) throw new ZZError("No 'Windows' cell found!");
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ZZCell s=rcell.getOrNewCell("d.1",1,obs);
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if(rootwin!=null) updateRoot(s);
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else updateFrames(s);
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updateEnd();
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p("update() end");
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}
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// XXX Should create a ZZWindow class for operating on the structure?
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public static Rectangle getBounds(ZZCell c, ZZObs obs) {
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try {
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int[] a=ZZUtil.getInts(c.s("d.1",-1),"d.bounds",false,4,4,obs);
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return new Rectangle(a[0], a[1], a[2], a[3]);
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} catch(ZZError e) {
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return null;
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}
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}
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public static Rectangle getBounds(ZZCell c) { return getBounds(c,null); }
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public static void setBounds(ZZCell c, Rectangle r) {
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Rectangle b=getBounds(c);
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if(b!=null&&b.equals(r)) return;
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ZZUtil.putInts(c.s("d.1",-1), "d.bounds", false,
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new int[] { r.x, r.y, r.width, r.height });
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}
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public static ZZCell startCell() {
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return ZZDefaultSpace.findOnClientlist(rspace, "Windows", false);
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}
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public static synchronized ZZViewComponent getContent(ZZCell c) {
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String txt = c.getText(obs);
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if(txt.equals("Canvas")) {
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ZZCanvasView v;
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if(views.get(c) instanceof ZZCanvasView)
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v = (ZZCanvasView) views.get(c);
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else
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views.put(c, v = new ZZCanvasView());
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ZZCell vcell = c.s("d.1", 1,obs);
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if(vcell == null) return null;
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v.setViewcell(vcell);
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return v;
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}
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return null;
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}
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private static void updateRoot(ZZCell s) {
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ScalableFont.fmComp=rootwin;
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updateWindowAttributes(s,rootwin);
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updatePanels(s.s("d.2",1,obs),rootwin);
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rootwin.validate();
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}
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private static void updateFrames(ZZCell s) {
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s=s.s("d.2",1,obs);
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while(s!=null) {
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boolean created=false;
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ZZCell c=s.s("d.1",1,obs);
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if(c!=null) {
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Frame f=(Frame)frames.get(c);
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if(f==null) {
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created=true;
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frames.put(c,f=new Frame());
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initWindow(c,f);
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final ZZCell cell=c;
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f.addWindowListener(new WindowAdapter() {
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public void windowClosing(WindowEvent e) {
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p("windowClosing()");
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ZZUpdateManager.freeze();
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try {
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cell.s("d.1",-1).excise("d.2");
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ZZObsTrigger.runObsQueue();
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} finally { ZZUpdateManager.thaw(); }
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}
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});
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}
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ScalableFont.fmComp=f;
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ex.put(c,c);
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Rectangle r=getBounds(c,obs);
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if(r!=null&&!f.getBounds().equals(r)) f.setBounds(r);
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f.setTitle(s.getText(obs));
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p("Frame name: "+f.getTitle());
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Container cont=getContent(c);
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if(cont!=null) {
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updateWindowAttributes(s,cont);
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cont.removeAll(); // FIXME
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updatePanels(c.s("d.2",1,obs),cont);
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if(f.getComponentCount()!=1||f.getComponent(0)!=cont) {
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p("Changing frame component and validating.");
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f.removeAll();
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f.add(cont);
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f.validate();
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}
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}
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if(created) f.setVisible(true);
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}
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s=s.s("d.2",1,obs);
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}
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}
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private static void updatePanels(ZZCell s,Container parent) {
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if(s==null) return;
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// FIXME This kludge is here so that applets still work. The real
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// functionality should be here Real Soon Now(TM). (Yeah, *right*)
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parent.removeAll();
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Container cont=getContent(s.s("d.1",1,obs));
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updateWindowAttributes(s,cont);
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parent.add(cont);
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}
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private static void initWindow(final ZZCell c,final Container w) {
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w.addComponentListener(new ComponentAdapter() {
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public void componentMoved(ComponentEvent e) {
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ZZUpdateManager.freeze();
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try {
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ZZObsTrigger.setEnabled(obs,false);
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setBounds(c, w.getBounds());
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ZZObsTrigger.setEnabled(obs,true);
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ZZObsTrigger.runObsQueue();
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} finally { ZZUpdateManager.thaw(); }
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}
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public void componentResized(ComponentEvent e) {
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ZZUpdateManager.freeze();
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try {
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ZZObsTrigger.setEnabled(obs,false);
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setBounds(c, w.getBounds());
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ZZObsTrigger.setEnabled(obs,true);
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ZZObsTrigger.runObsQueue();
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} finally { ZZUpdateManager.thaw(); }
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}
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});
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}
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private static void updateWindowAttributes(ZZCell c,Container w) {
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ZZCell col=c.s("d.color",1,obs);
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if(col!=null) {
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String colText = col.getText(obs);
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// See if it looks like an URL or a number.
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if(Character.isDigit(colText.charAt(0)) ||
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colText.charAt(0) == '-')
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w.setBackground( Color.decode(colText) );
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else {
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ZZLogger.log("Not digit first! '"+colText+"'");
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// XXX Find image, store it in the right place (should be
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// in content...
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/*
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URL url = null;
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try {
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url = new URL(cursor.h("d.photo", 1).getText());
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} catch(MalformedURLException e) {
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String s= e.toString();
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g.drawString(s, 0, 0);
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return;
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}
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if(!url.equals(cur)) {
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cur = url;
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img = getToolkit().getImage(url);
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}
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if(!g.drawImage(img, 0, 0, null)) {
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repaint(1000);
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}
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*/
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}
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if((col=col.s("d.color", 1,obs)) != null)
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w.setForeground( Color.decode(col.getText(obs)) );
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}
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}
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private static void updateEnd() {
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for (Enumeration e = views.keys(); e.hasMoreElements();) {
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ZZCell cell = (ZZCell) e.nextElement();
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if(!ex.containsKey(cell)) views.remove(cell);
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}
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for (Enumeration e = frames.keys(); e.hasMoreElements();) {
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ZZCell cell = (ZZCell) e.nextElement();
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if(ex.containsKey(cell)) continue;
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Frame f = (Frame)frames.get(cell);
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f.dispose();
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frames.remove(cell);
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}
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ex=new Hashtable();
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}
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}
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