src/org/xwt/Main.java

   1 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
   2 package org.xwt;
   3
   4 import org.xwt.util.*;
   5 import java.lang.reflect.*;
   6 import java.applet.*;
   7 import java.net.*;
   8 import java.util.*;
   9 import java.io.*;
  10 import java.awt.*;
  11 import org.mozilla.javascript.*;
  12 import org.bouncycastle.util.encoders.Base64;
  13
  14 /** Entry point for the XWT Engine; handles splash screen, initial xwar loading, and argument processing */
  15 public class Main extends Applet {
  16
  17     /**
  18      *  Used for security checks. If this is null, it means that only
  19      *  scripts originating from the local filesystem are loaded in
  20      *  the engine (maximum permissions). If scripts have been loaded
  21      *  from multiple locations, this will be 0.0.0.0 (the invalid
  22      *  IP).
  23      */
  24     public static java.net.InetAddress originAddr = null;
  25
  26     /** the URL where the initial xwar came from. */
  27     public static String origin = null;
  28
  29     /** true iff the user asked for rendered regions to be shown with a red rectangle */
  30     public static boolean showRenders = false;
  31
  32     public Main() { }
  33     public void paint(Graphics g) { }    // do-nothing method to avoid repaints
  34     public void update(Graphics g) { }   // do-nothing method, to avoid repaints
  35
  36     public static Applet applet = null;
  37
  38     /** don't check if all surfaces are gone (and quit) until this is true */
  39     public static boolean doneInitializing = false;
  40
  41     /** applet entry point */
  42     public void init() {
  43         if ("true".equals(getParameter("showRenders"))) showRenders = true;
  44         if ("true".equals(getParameter("verbose"))) Log.verbose = true;
  45         applet = this;
  46         main(new String[] { getParameter("initial-xwar-url"), "main" });
  47     }
  48
  49     /** common entry point */
  50     public static void main(String[] args) {
  51         try {
  52             int startargs = 0;
  53             while (true) {
  54                 if (startargs > args.length - 1) {
  55                     System.out.println("Usage: xwt [-s] [-v] source-location [initial-template]");
  56                     System.out.println("");
  57                     System.out.println("Options:");
  58                     System.out.println("    -s show rendering activity with red rectangles");
  59                     System.out.println("    -v verbose logging");
  60                     System.out.println("");
  61                     System.out.println("Source-location is one of the following:");
  62                     System.out.println("    - the path to an xwar file");
  63                     System.out.println("    - the path to a directory to be used as an xwar");
  64                     System.out.println("    - the http url of an xwar");
  65                     System.out.println("");
  66                     System.out.println("Initial-template is the resource name of the template to load; defaults to 'main'");
  67                     Runtime.getRuntime().exit(-1);
  68                 }
  69                 else if (args[startargs].equals("-s")) showRenders = true;
  70                 else if (args[startargs].equals("-v")) Log.verbose = true;
  71                 else break;
  72                 startargs++;
  73             }
  74             final String instancename = args.length > startargs + 1 ? args[startargs + 1] : "main";
  75
  76             Platform.forceLoad();
  77             if (Log.on) for(int i=0; i<args.length; i++) Log.log(Main.class, "argument " + i + ": " + args[i]);
  78
  79             // we do this here instead of in a static initializer to avoid threading hazards
  80             if (Log.on) Log.log(Main.class, "loading scar image");
  81             PNG png = PNG.decode(new ByteArrayInputStream(Base64.decode(scarPicture_png_base64)), "bundled scar image");
  82             Surface.scarPicture = Platform.createPicture(png.getData(), png.getWidth(), png.getHeight());
  83
  84             InputStream is = Main.class.getClassLoader().getResourceAsStream("org/xwt/builtin.xwar");
  85             if (is == null) Platform.criticalAbort("unable to load builtin.xwar");
  86             Resources.loadArchive(is);
  87
  88             String initialTemplate = "main";
  89
  90             if (args.length > startargs) {
  91                 if (args[startargs].startsWith("http://")) {
  92                     if (Log.on) Log.log(Main.class, "downloading xwar");
  93                     origin = args[startargs];
  94                     initialTemplate = "org.xwt.builtin.splash";
  95
  96                 } else {
  97                     if (Log.on) Log.log(Main.class, "loading xwar from local filesystem");
  98
  99                     // HACK because MSIE turns \'s into /'s in URLs... argh!!
 100                     if (Platform.platform.getClass().getName().endsWith("Win32"))
 101                         args[startargs] = args[startargs].replace('/', '\\');
 102
 103                     File f = new File(args[startargs]);
 104                     origin = "file:" + f.getAbsolutePath();
 105                     if (f.isDirectory()) {
 106                         Resources.loadDirectory(f);
 107                         Surface.scarAllSurfacesFromNowOn = true;
 108                     } else {
 109                         initialTemplate = "org.xwt.builtin.splash";
 110                     }
 111
 112                     if (args.length > startargs + 1) initialTemplate = args[startargs + 1];
 113                 }
 114             }
 115
 116             if (Log.on) Log.log(Main.class, "instantiating " + initialTemplate);
 117             final String initialTemplate_f = initialTemplate;
 118             ThreadMessage.newthread(new JSObject.JSFunction() {
 119                     public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] arg) throws JavaScriptException {
 120                         new Box(initialTemplate_f, null);
 121             doneInitializing = true;
 122             if (Surface.allSurfaces.size() == 0) {
 123                 Log.log(this, "exiting because all surfaces are gone");
 124                 Platform.exit();
 125             }
 126                         return null;
 127                     }
 128                 });
 129
 130             // gcj-win32 exit()'s when the original thread dies, so we have to deadlock ourselves
 131             if (Log.on) Log.log(Main.class, "main thread blocking on new semaphore");
 132             new org.xwt.util.Semaphore().block();
 133
 134         } catch (Throwable e) {
 135             e.printStackTrace();
 136             Platform.criticalAbort("exception in Main.main(): " + e);
 137         }
 138     }
 139
 140     /** a base64-encoded png image of the scar */
 141     public static final String scarPicture_png_base64 =
 142         "iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAABmJLR0QA/wD/AP+gvaeTAAAA" +
 143         "CXBIWXMAAAsRAAALEQF/ZF+RAAAAB3RJTUUH0gIYAgsIkuS+AwAAA7lJREFUeJzF1l9MW1Uc" +
 144         "wPHvvb3lz/oHOssd0hXo+NNONow102xDSXzoJGiyGBIyDNMlJvjn0USNL74ZY3wnxOgeWIxo" +
 145         "9uAmZBrMiNkYYw5xRGBFQdiuzgtl/Gmht7S9PsBM162lGwN+yU3uPTf3nM895/c7OXwOfSKI" +
 146         "23Z1yDJt0Ms2hQhwARa3CyHeudkuhJj4sB0IMblhqxH3ALYacV/AViJSArYKkRawFYh1AZuN" +
 147         "yAiwmQgpzTsBMMzVv14V00PWQGDhJpd/UNugdwBebIOFRwFINwOGwJHXPH/d9BdYrbXZpaV1" +
 148         "ZUPeZ8RuiHnhXAvYNxMghEEMaXO79rjqyLeV6c5iD01Nrz4bevnYwYFVxJkWsG4WQM+B+I6e" +
 149         "7/q0SH98srXuYufpk2NGo8Tx5jcF6/unDwyA5oVzmwUAiBlhReg622eG6L7xDuWbjp+iJSVO" +
 150         "Kisfl2Z8p8QLENxoYqatgjzQAeFy4QvOs0ZX5bGmeunvWxK//jaNQQpLsPHqSJkDgKT6GrxD" +
 151         "xZ6DkimrzFffUFS020dX50B8efaPyeyuN5ZZBW4IkQogqb6Gp0b9IxZJcmKzubCYvfT0KAjx" +
 152         "ES3r1LtTQDzxg4dFiA5V/UCRZUtio+p7xTtyfdgqiEXIBW5cew6xv/p5ap8zBVbi8ez5hg9d" +
 153         "O8DA6kxtCCG2w8/JiPngrMUgObE/VoHDeYAn9taytBxDRw+/VH9YlHJFR7Dxo4o1xF3xoAiD" +
 154         "AMI1mKwJhcYUWa63hkKRyXx7saZliU9WH8XjqSUciWHLs3HrX6x2e9a0212yqEXthWGPNzdy" +
 155         "9cdZkpZjCiLvwNvfwxcZAQASEe6JMWXGUeCM6TaKiqoxm8xMB26zM9+OOq2b9lYVWsrLyoWJ" +
 156         "G1FzvKo8L3r1/D/JHWeKuCsJE5ZDfPr3/l6BYX14tJvgUhBbfh7TgQDuCkvYarKg3BCIRu1E" +
 157         "V3bFUnWeyXLcUwVriE8UWTYUn//2UjTi1/3+iwSDi+zft5NSV27O6EiUwaE/CS8NaMaTLaPp" +
 158         "BlgPcd8ybIczDlX9VJFlg73zs0va8qA+PtGHxWTGfz3O4NA483O/aHrriStLEEkHWA/xfw4k" +
 159         "xzUYrQmF5hVZPlw42D216CrdPXfbKMzMRliYv6LReqJ/CVZISsBUkSonBHGd7bgZjiqy/F6F" +
 160         "qsZCjR87c0w2DF++Nbn25xkNnhg1YGmBQxkD1hDFiix/7VDVxQcdcD1ERkeydphyqOrx5B3z" +
 161         "YSMxJzKagTvRDKWKLH/VqKqPwgHAf3HDlnr6flmoAAAAAElFTkSuQmCC";
 162 }