components/application.js

   1 const Cc = Components.classes;
   2 const Ci = Components.interfaces;
   3 const Cr = Components.results;
   4 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
   5
   6 function application () {
   7     Components.utils.import("resource://gre/modules/XPCOMUtils.jsm", this);
   8
   9     this.wrappedJSObject = this;
  10     this.conkeror = this;
  11
  12     this.loaded_modules = [];
  13     this.loading_modules = [];
  14     this.module_after_load_functions = new Object();
  15     this.pending_loads = [];
  16
  17     try {
  18         this.require("conkeror.js");
  19     } catch (e) {
  20         this.dumpln("Error initializing.");
  21         this.dump_error(e);
  22     }
  23 }
  24 application.prototype = {
  25     Cc: Cc,
  26     Ci: Ci,
  27     Cr: Cr,
  28     /* Note: resource://app currently doesn't result in xpcnativewrappers=yes */
  29     module_uri_prefix: "chrome://conkeror-modules/content/",
  30     subscript_loader: Cc["@mozilla.org/moz/jssubscript-loader;1"].getService(Ci.mozIJSSubScriptLoader),
  31     preferences: Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService),
  32     dump_error: function (e) {
  33         if (e instanceof Error) {
  34             this.dumpln(e.name + ": " + e.message);
  35             this.dumpln(e.fileName + ":" + e.lineNumber);
  36             dump(e.stack);
  37         } else if (e instanceof Ci.nsIException) {
  38             this.dumpln(e.name + ": " + e.message);
  39             var stack_frame = e.location;
  40             while (stack_frame) {
  41                 this.dumpln(stack_frame.name + "()@" + stack_frame.filename + ":" + stack_frame.lineNumber);
  42                 stack_frame = stack_frame.caller;
  43             }
  44         } else {
  45             this.dumpln("Error: " + e);
  46         }
  47     },
  48     loaded: function (module) {
  49         return (this.loaded_modules.indexOf(module) != -1);
  50     },
  51     provide: function(module) {
  52         if (this.loaded_modules.indexOf(module) == -1)
  53             this.loaded_modules.push(module);
  54     },
  55     skip_module_load : {},
  56     load_module: function(module_name) {
  57         if (this.loading_modules.indexOf(module_name) != -1)
  58             throw new Error("Circular module dependency detected: "
  59                             + this.loading_modules.join(" -> ") + " -> " + module_name);
  60         this.loading_modules.push(module_name);
  61         try {
  62             this.subscript_loader.loadSubScript(this.module_uri_prefix + module_name,
  63                                                 this);
  64             this.provide(module_name);
  65             var funcs;
  66             if ((funcs = this.module_after_load_functions[module_name]) != null)
  67             {
  68                 for (var i = 0; i < funcs.length; ++i)
  69                     funcs[i]();
  70                 delete this.module_after_load_functions[module_name];
  71             }
  72         }
  73         catch (e if e == this.skip_module_load) {}
  74         catch (e) {
  75             if (!(e instanceof Error) && !(e instanceof Ci.nsIException) &&
  76                 (String(e) == "ContentLength not available (not a local URL?)" ||
  77                  String(e) == "Error creating channel (invalid URL scheme?)"))
  78                 throw new Error("Module not found: " + this.module_uri_prefix + module_name + ": " + e);
  79             throw e;
  80         }
  81         finally {
  82             this.loading_modules.pop();
  83         }
  84
  85         if (this.loading_modules.length == 0)
  86         {
  87             while (this.pending_loads.length > 0)
  88             {
  89                 this.require(this.pending_loads.pop());
  90             }
  91         }
  92     },
  93     require: function (module) {
  94         if (!this.loaded(module))
  95             this.load_module(module);
  96     },
  97     require_later: function (module) {
  98         if (!this.loaded(module)
  99             && this.pending_loads.indexOf(module) == -1)
 100             this.pending_loads.push(module);
 101     },
 102     call_after_load: function (module, func) {
 103         if (this.loaded(module))
 104             func();
 105         else
 106         {
 107             var funcs;
 108             if (!(funcs = this.module_after_load_functions[module]))
 109                 funcs = this.module_after_load_functions[module] = [];
 110             funcs.push(func);
 111         }
 112     },
 113     dumpln: function (line) {
 114         dump(line + "\n");
 115     },
 116
 117     version: "$CONKEROR_VERSION$", // preprocessor variable
 118     homepage: "chrome://conkeror/content/help.html",
 119
 120     /* nsISupports */
 121     QueryInterface: XPCOMUtils.generateQI([]),
 122
 123     /* XPCOM registration */
 124     classDescription: "Conkeror global object",
 125     classID: Components.ID("{72a7eea7-a894-47ec-93a9-a7bc172cf1ac}"),
 126     contractID: "@conkeror.mozdev.org/application;1"
 127 };
 128
 129 function NSGetModule(compMgr, fileSpec)
 130     XPCOMUtils.generateModule([application]);