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     /** applet entry point */
  39     public void init() {
  40         if ("true".equals(getParameter("showRenders"))) showRenders = true;
  41         if ("true".equals(getParameter("verbose"))) Log.verbose = true;
  42         applet = this;
  43         main(new String[] { getParameter("initial-xwar-url"), "main" });
  44     }
  45
  46     /** common entry point */
  47     public static void main(String[] args) {
  48         try {
  49             int startargs = 0;
  50             while (true) {
  51                 if (startargs > args.length - 1) {
  52                     System.out.println("Usage: xwt [-s] [-v] source-location [initial-template]");
  53                     System.out.println("");
  54                     System.out.println("Options:");
  55                     System.out.println("    -s show rendering activity with red rectangles");
  56                     System.out.println("    -v verbose logging");
  57                     System.out.println("");
  58                     System.out.println("Source-location is one of the following:");
  59                     System.out.println("    - the path to an xwar file");
  60                     System.out.println("    - the path to a directory to be used as an xwar");
  61                     System.out.println("    - the http url of an xwar");
  62                     System.out.println("");
  63                     System.out.println("Initial-template is the resource name of the template to load; defaults to 'main'");
  64                     Runtime.getRuntime().exit(-1);
  65                 }
  66                 else if (args[startargs].equals("-s")) showRenders = true;
  67                 else if (args[startargs].equals("-v")) Log.verbose = true;
  68                 else break;
  69                 startargs++;
  70             }
  71             final String instancename = args.length > startargs + 1 ? args[startargs + 1] : "main";
  72
  73             Platform.forceLoad();
  74             if (Log.on) for(int i=0; i<args.length; i++) Log.log(Main.class, "argument " + i + ": " + args[i]);
  75
  76             // we do this here instead of in a static initializer to avoid threading hazards
  77             if (Log.on) Log.log(Main.class, "loading scar image");
  78             PNG png = PNG.decode(new ByteArrayInputStream(Base64.decode(scarPicture_png_base64)), "bundled scar image");
  79             Surface.scarPicture = Platform.createPicture(png.getData(), png.getWidth(), png.getHeight());
  80
  81             InputStream is = Main.class.getClassLoader().getResourceAsStream("org/xwt/builtin.xwar");
  82             if (is == null) Platform.criticalAbort("unable to load builtin.xwar");
  83             Resources.loadArchive(is);
  84
  85             String initialTemplate = "main";
  86
  87             if (args.length > startargs) {
  88                 if (args[startargs].startsWith("http://")) {
  89                     if (Log.on) Log.log(Main.class, "downloading xwar");
  90                     origin = args[startargs];
  91                     initialTemplate = "org.xwt.builtin.splash";
  92
  93                 } else {
  94                     if (Log.on) Log.log(Main.class, "loading xwar from local filesystem");
  95
  96                     // HACK because MSIE turns \'s into /'s in URLs... argh!!
  97                     if (Platform.platform.getClass().getName().endsWith("Win32"))
  98                         args[startargs] = args[startargs].replace('/', '\\');
  99
 100                     File f = new File(args[startargs]);
 101                     origin = "file:" + f.getAbsolutePath();
 102                     if (f.isDirectory()) {
 103                         Resources.loadDirectory(f);
 104                         Surface.scarAllSurfacesFromNowOn = true;
 105                     } else {
 106                         initialTemplate = "org.xwt.builtin.splash";
 107                     }
 108
 109                     if (args.length > startargs + 1) initialTemplate = args[startargs + 1];
 110                 }
 111             }
 112
 113             if (Log.on) Log.log(Main.class, "instantiating " + initialTemplate);
 114             final String initialTemplate_f = initialTemplate;
 115             ThreadMessage.newthread(new JSObject.JSFunction() {
 116                     public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] arg) throws JavaScriptException {
 117                         new Box(initialTemplate_f, null);
 118                         return null;
 119                     }
 120                 });
 121
 122             // gcj-win32 exit()'s when the original thread dies, so we have to deadlock ourselves
 123             if (Log.on) Log.log(Main.class, "main thread blocking on new semaphore");
 124             new org.xwt.util.Semaphore().block();
 125
 126         } catch (Throwable e) {
 127             e.printStackTrace();
 128             Platform.criticalAbort("exception in Main.main(): " + e);
 129         }
 130     }
 131
 132     /** a base64-encoded png image of the scar */
 133     public static final String scarPicture_png_base64 =
 134         "iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAABmJLR0QA/wD/AP+gvaeTAAAA" +
 135         "CXBIWXMAAAsRAAALEQF/ZF+RAAAAB3RJTUUH0gIYAgsIkuS+AwAAA7lJREFUeJzF1l9MW1Uc" +
 136         "wPHvvb3lz/oHOssd0hXo+NNONow102xDSXzoJGiyGBIyDNMlJvjn0USNL74ZY3wnxOgeWIxo" +
 137         "9uAmZBrMiNkYYw5xRGBFQdiuzgtl/Gmht7S9PsBM162lGwN+yU3uPTf3nM895/c7OXwOfSKI" +
 138         "23Z1yDJt0Ms2hQhwARa3CyHeudkuhJj4sB0IMblhqxH3ALYacV/AViJSArYKkRawFYh1AZuN" +
 139         "yAiwmQgpzTsBMMzVv14V00PWQGDhJpd/UNugdwBebIOFRwFINwOGwJHXPH/d9BdYrbXZpaV1" +
 140         "ZUPeZ8RuiHnhXAvYNxMghEEMaXO79rjqyLeV6c5iD01Nrz4bevnYwYFVxJkWsG4WQM+B+I6e" +
 141         "7/q0SH98srXuYufpk2NGo8Tx5jcF6/unDwyA5oVzmwUAiBlhReg622eG6L7xDuWbjp+iJSVO" +
 142         "Kisfl2Z8p8QLENxoYqatgjzQAeFy4QvOs0ZX5bGmeunvWxK//jaNQQpLsPHqSJkDgKT6GrxD" +
 143         "xZ6DkimrzFffUFS020dX50B8efaPyeyuN5ZZBW4IkQogqb6Gp0b9IxZJcmKzubCYvfT0KAjx" +
 144         "ES3r1LtTQDzxg4dFiA5V/UCRZUtio+p7xTtyfdgqiEXIBW5cew6xv/p5ap8zBVbi8ez5hg9d" +
 145         "O8DA6kxtCCG2w8/JiPngrMUgObE/VoHDeYAn9taytBxDRw+/VH9YlHJFR7Dxo4o1xF3xoAiD" +
 146         "AMI1mKwJhcYUWa63hkKRyXx7saZliU9WH8XjqSUciWHLs3HrX6x2e9a0212yqEXthWGPNzdy" +
 147         "9cdZkpZjCiLvwNvfwxcZAQASEe6JMWXGUeCM6TaKiqoxm8xMB26zM9+OOq2b9lYVWsrLyoWJ" +
 148         "G1FzvKo8L3r1/D/JHWeKuCsJE5ZDfPr3/l6BYX14tJvgUhBbfh7TgQDuCkvYarKg3BCIRu1E" +
 149         "V3bFUnWeyXLcUwVriE8UWTYUn//2UjTi1/3+iwSDi+zft5NSV27O6EiUwaE/CS8NaMaTLaPp" +
 150         "BlgPcd8ybIczDlX9VJFlg73zs0va8qA+PtGHxWTGfz3O4NA483O/aHrriStLEEkHWA/xfw4k" +
 151         "xzUYrQmF5hVZPlw42D216CrdPXfbKMzMRliYv6LReqJ/CVZISsBUkSonBHGd7bgZjiqy/F6F" +
 152         "qsZCjR87c0w2DF++Nbn25xkNnhg1YGmBQxkD1hDFiix/7VDVxQcdcD1ERkeydphyqOrx5B3z" +
 153         "YSMxJzKagTvRDKWKLH/VqKqPwgHAf3HDlnr6flmoAAAAAElFTkSuQmCC";
 154 }