Initial revision

1 files changed, 401 insertions, 0 deletions

diff --git a/misc/xrdsContentHandler.js b/misc/xrdsContentHandler.js
new file mode 100755
index 0000000..4f30310
--- a/dev/null
+++ b/misc/xrdsContentHandler.js
@@ -0,0 +1,401 @@
+
+const nsISupports            = Components.interfaces.nsISupports;
+
+const nsIBrowserDOMWindow    = Components.interfaces.nsIBrowserDOMWindow;
+const nsIChannel             = Components.interfaces.nsIChannel;
+const nsIContentHandler      = Components.interfaces.nsIContentHandler;
+const nsIDOMChromeWindow     = Components.interfaces.nsIDOMChromeWindow;
+const nsIDOMWindow           = Components.interfaces.nsIDOMWindow;
+const nsIFactory             = Components.interfaces.nsIFactory;
+const nsIHttpProtocolHandler = Components.interfaces.nsIHttpProtocolHandler;
+const nsIInterfaceRequestor  = Components.interfaces.nsIInterfaceRequestor;
+const nsIPrefBranch          = Components.interfaces.nsIPrefBranch;
+const nsIPrefLocalizedString = Components.interfaces.nsIPrefLocalizedString;
+const nsISupportsString      = Components.interfaces.nsISupportsString;
+const nsIWebNavigation       = Components.interfaces.nsIWebNavigation;
+const nsIWindowMediator      = Components.interfaces.nsIWindowMediator;
+const nsIWindowWatcher       = Components.interfaces.nsIWindowWatcher;
+const nsICategoryManager     = Components.interfaces.nsICategoryManager;
+const nsIWebNavigationInfo   = Components.interfaces.nsIWebNavigationInfo;
+const nsIStreamListener      = Components.interfaces.nsIStreamListener;
+const nsIRequestObserver     = Components.interfaces.nsIRequestObserver;
+const nsIURILoader           = Components.interfaces.nsIURILoader;
+const nsIURIContentListener  = Components.interfaces.nsIURIContentListener;
+
+const NS_BINDING_ABORTED = 0x80020006;
+const NS_ERROR_WONT_HANDLE_CONTENT = 0x805d0001;
+const NS_ERROR_ABORT = Components.results.NS_ERROR_ABORT;
+
+function shouldLoadURI(aURI) {
+  if (aURI.schemeIs("xri"))
+    return true;
+  dump("*** Preventing external load of chrome: URI into browser window\n");
+  dump("    Use -chrome <uri> instead\n");
+  return false;
+}
+
+
+
+
+function openWindow(parent, url, target, features, args) {
+  var wwatch = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
+                         .getService(nsIWindowWatcher);
+
+  var argstring;
+  if (args) {
+    argstring = Components.classes["@mozilla.org/supports-string;1"]
+                            .createInstance(nsISupportsString);
+    argstring.data = args;
+  }
+  return wwatch.openWindow(parent, url, target, features, argstring);
+}
+
+
+
+
+function getMostRecentWindow(aType) {
+  var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
+                     .getService(nsIWindowMediator);
+  return wm.getMostRecentWindow(aType);
+}
+
+
+
+
+// this returns the most recent non-popup browser window
+function getMostRecentBrowserWindow() {
+  var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
+                     .getService(Components.interfaces.nsIWindowMediator);
+
+  var windowList = wm.getZOrderDOMWindowEnumerator("navigator:browser", true);
+  if (!windowList.hasMoreElements())
+    return null;
+
+  var win = windowList.getNext();
+  while (!win.toolbar.visible) {
+    if (!windowList.hasMoreElements()) 
+      return null;
+
+    win = windowList.getNext();
+  }
+
+  return win;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+var xrdsContentHandler = {
+
+  /** browser window */
+  contentWindow: null,
+
+  /** XRDS buffer */
+  buf: null,
+
+  scriptableInStream: null,
+
+  init: function(contentWin) {
+    this.contentWindow = contentWindow;
+  },
+
+  close: function() {
+    this.contentWindow = null;
+  },
+
+  /* nsISupports */
+  QueryInterface : function(iid) {
+    dump("xrdsCH ... ");
+    if (iid.equals(nsISupports)) {
+	    dump("QI(nsISupports)\n");
+    }
+    else if (iid.equals(nsIContentHandler)) {
+	    dump("QI(nsIContentHandler)\n");
+    }
+    else if (iid.equals(nsIStreamListener)) {
+	    dump("QI(nsIStreamListener)\n");
+    }
+    else if (iid.equals(nsIRequestObserver)) {
+	    dump("QI(nsIRequestObserver)\n");
+    }
+    else if (iid.equals(Components.interfaces.nsIURIContentListener)) {
+	    dump("QI(nsIURIContentListener)\n");
+    }
+    else if (iid.equals(nsIFactory)) {
+	    dump("QI(nsIFactory)\n");
+    }
+    else {
+	    dump("QI(" + iid + ") - IDONTKNOW!!!!!\n");
+    }
+
+    if (!iid.equals(nsISupports) &&
+        !iid.equals(nsIContentHandler) &&
+        !iid.equals(nsIURIContentListener) &&
+        !iid.equals(nsIStreamListener) &&
+        !iid.equals(nsIRequestObserver) &&
+        !iid.equals(nsIFactory))
+      throw Components.results.NS_ERROR_NO_INTERFACE;
+
+    dump("QI returning this..\n");
+    return this;
+  },
+
+
+  /* nsIURIContentListener */
+  loadCookie: null,
+
+  parentContentListener: null,
+
+  onStartURIOpen: function(uri)
+  {
+    dump("xrdsCH onStartURIOpen '" + uri + "'");
+    // ignore and don't abort
+    return false;
+  },
+
+  doContent: function(contentType, isContentPreferred, request, contentHandler)
+  {
+	dump("doContent called\n");
+        // forward the doContent to our content area webshell
+        var docShell = this.contentWindow.docShell;
+        var contentListener;
+        try {
+            contentListener =
+                docShell.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
+                .getInterface(Components.interfaces.nsIURIContentListener);
+        } catch (ex) {
+            dump(ex);
+        }
+
+	dump("no content listener from docShell!\n");
+        if (!contentListener) return false;
+
+	var rv = contentListener.doContent(contentType, isContentPreferred, request, contentHandler);
+
+	if (rv) {
+		dump("docShell wants to handle the load..\n");
+	}
+	else {
+		dump("docShell does NOT want to handle the load..\n");
+
+		contentHandler = contentHandler.value;
+	}
+
+	return rv;
+
+  },
+
+  isPreferred: function(contentType, desiredContentType)
+  {
+    dump("isPreferred '" + contentType + "'\n");
+        switch(contentType) {
+            case "application/xrds+xml":
+            case "application/xrd+xml":
+		dump("yes!!!\n");
+                return true;
+        }
+	dump("erm.. nope!\n");
+        return false;
+  },
+
+  canHandleContent: function(contentType, isContentPreferred, desiredContentType)
+  {
+    dump("canHandleContent '" + contentType + "'\n");
+    return this.isPreferred(contentType, desiredContentType);
+  },
+
+
+
+  /* nsIRequestObserver */
+  onStartRequest: function(request, ctx)
+  {
+    dump("xrdsContentHandler - onStartRequest\n");
+  },
+
+  onStopRequest: function(request, ctx, status)
+  {
+    dump("xrdsContentHandler - onStopRequest\n");
+    this.scriptableInStream.close();
+  },
+
+
+  /* nsIStreamListener */
+  onDataAvailable: function(request, domWindow, inputStream, offset, count)
+  {
+    dump("onDataAvailable, offset=" + offset + ", count=" + count + "\n");
+    if (offset == 0) {
+      this.scriptableInStream.init(inputStream);
+    }
+
+    buf += this.scriptableInStream.read(count);
+
+    if (!request.isPending()) {
+      dump("request finished, buf = " + buf + "\n");
+      var html = domWindow.document.createElement("html");
+      html.createTextNode(buf);
+      this.scriptableInStream = null;
+    }
+    else {
+      dump("request pending...\n");
+    }
+  },
+
+  /* nsIContentHandler */
+
+  handleContent : function(contentType, context, request)
+  {
+    dump("handleContent " + contentType + "\n");
+    var parentWin;
+    try {
+      parentWin = context.getInterface(nsIDOMWindow);
+    }
+    catch (e) {
+      alert("no parent!!!"); // XXX
+      return;
+    }
+
+    dump("getting channel\n");
+    var channel = request.QueryInterface(nsIChannel);
+    if (!channel) {
+      dump("no channel!!!\n");
+      return;
+    }
+
+    if (this.scriptableInStream) {
+      dump("Hey! You can't possibly be reusing this handler?!\n");
+      return;
+    }
+
+    dump("making scriptableInStream\n");
+    this.scriptableInStream = Components.classes["@mozilla.org/scriptableinputstream;1"]
+                                   .createInstance(Components.interfaces.nsIScriptableInputStream);
+
+    buf = '';
+
+/*
+    try {
+	    dump("before asyncOpen\n");
+	    channel.asyncOpen(this, parentWin);
+            return;
+    }
+    catch (e) {
+	dump("shit cannot asyncOpen... " + e + "\n");
+    }
+
+    dump("try blocking open\n");
+    var instream = channel.open();
+    this.scriptableinputstream.init(instream);
+    while (true) {
+      var n = this.scriptableinputstream.available();
+      if (n > 0) {
+        dump(this.scriptableinputstream.read(n) + "\n");
+      }
+    }
+
+    dump("channel opened\n");
+*/
+
+    dump("handleContent returning \n");
+  },
+
+  /* nsIFactory */
+  createInstance: function(outer, iid)
+  {
+    dump("xrdsCH createInstance called..\n");
+    if (outer != null)
+      throw Components.results.NS_ERROR_NO_AGGREGATION;
+
+    dump("xrdsCH ok\n");
+    return this.QueryInterface(iid);
+  },
+    
+  lockFactory : function bch_lock(lock) {
+    /* no-op */
+  }
+};
+
+const CLASS_ID = Components.ID("{e857f11b-fd59-4285-8f4a-c27cf9051a36}");
+const CLASS_NAME = "XRDS Content Handler";
+const CONTRACTID_PREFIX = "@mozilla.org/uriloader/content-handler;1?type=";
+
+
+
+var Module = {
+  /* nsISupports */
+  QueryInterface: function(iid)
+  {
+    dump("QI called\n");
+    if (iid.equals(Components.interfaces.nsIModule) ||
+        iid.equals(Components.interfaces.nsISupports))
+      return this;
+
+    dump("QI throwing!!\n");
+    throw Components.results.NS_ERROR_NO_INTERFACE;
+  },
+
+
+  /* nsIModule */
+  getClassObject: function(compMgr, cid, iid)
+  {
+    dump("getClassObject called\n");
+    if (cid.equals(CLASS_ID))
+      return xrdsContentHandler.QueryInterface(iid);
+
+    dump("gCO throwing!!\n");
+    throw Components.results.NS_ERROR_NO_INTERFACE;
+  },
+ 
+
+  registerSelf: function(compMgr, fileSpec, location, type)
+  {
+    var compReg =
+      compMgr.QueryInterface(Components.interfaces.nsIComponentRegistrar);
+
+    compReg.registerFactoryLocation( CLASS_ID,
+			       CLASS_NAME,
+			       CONTRACTID_PREFIX + "application/xrds+xml",
+			       fileSpec,
+			       location,
+			       type );
+
+    compReg.registerFactoryLocation( CLASS_ID,
+			       CLASS_NAME,
+			       CONTRACTID_PREFIX + "text/uri-list",
+			       fileSpec,
+			       location,
+			       type );
+
+    dump("done registerSelf..\n");
+  },
+ 
+
+  unregisterSelf: function(compMgr, location, type)
+  {
+    var compReg = compMgr.QueryInterface(nsIComponentRegistrar);
+    compReg.unregisterFactoryLocation(CLASS_ID, location);
+  },
+
+
+  canUnload: function(compMgr) {
+    return true;
+  }
+};
+
+// NSGetModule: Return the nsIModule object.
+function NSGetModule(compMgr, fileSpec) {
+  return Module;
+}