diff -r 000000000000 -r 6474c204b198 editor/libeditor/html/nsHTMLURIRefObject.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/editor/libeditor/html/nsHTMLURIRefObject.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,295 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Here is the list, from beppe and glazman:
+    href >> A, AREA, BASE, LINK
+    src >> FRAME, IFRAME, IMG, INPUT, SCRIPT
+    <META http-equiv="refresh" content="3,http://www.acme.com/intro.html">
+    longdesc >> FRAME, IFRAME, IMG
+    usemap >> IMG, INPUT, OBJECT
+    action >> FORM
+    background >> BODY
+    codebase >> OBJECT, APPLET
+    classid >> OBJECT
+    data >> OBJECT
+    cite >> BLOCKQUOTE, DEL, INS, Q
+    profile >> HEAD
+    ARCHIVE attribute on APPLET ; warning, it contains a list of URIs.
+
+    Easier way of organizing the list:
+    a:      href
+    area:   href
+    base:   href
+    body:   background
+    blockquote: cite (not normally rewritable)
+    link:   href
+    frame:  src, longdesc
+    iframe: src, longdesc
+    input:  src, usemap
+    form:   action
+    img:    src, longdesc, usemap
+    script: src
+    applet: codebase, archive <list>
+    object: codebase, data, classid, usemap
+    head:   profile
+    del:    cite
+    ins:    cite
+    q:      cite
+ */
+
+/* Here is how to open a channel for testing
+   (from embed/qa/testembed/Tests.cpp):
+
+  nsCOMPtr<nsIChannel> theChannel;
+  nsCString uri;
+  nsCOMPtr<nsIURI> theURI;
+  rv = NS_NewURI(getter_AddRefs(theURI), theSpec);
+  if (!theURI)
+    error;
+  rv = NS_OpenURI(getter_AddRefs(theChannel), theURI, nullptr, theLoadGroup);
+  if (!theChannel)
+    error;
+  nsCOMPtr<nsILoadGroup> theLoadGroup(do_CreateInstance(NS_LOADGROUP_CONTRACTID));
+  if (!theLoadGroup)
+    error;
+		nsCOMPtr<nsIStreamListener> listener(static_cast<nsIStreamListener*>(qaBrowserImpl));
+		//nsCOMPtr<nsIWeakReference> thisListener(do_GetWeakReference(listener));
+		//qaWebBrowser->AddWebBrowserListener(thisListener, NS_GET_IID(nsIStreamListener));
+
+		// this calls nsIStreamListener::OnDataAvailable()
+		rv = theChannel->AsyncOpen(listener, nullptr);
+
+		nsCOMPtr<nsIRequest> theRequest = do_QueryInterface(theChannel);
+    // Now we can do things on nsIRequest (like what?)
+ */
+
+#include "mozilla/mozalloc.h"
+#include "nsAString.h"
+#include "nsDebug.h"
+#include "nsError.h"
+#include "nsHTMLURIRefObject.h"
+#include "nsID.h"
+#include "nsIDOMAttr.h"
+#include "nsIDOMElement.h"
+#include "nsIDOMMozNamedAttrMap.h"
+#include "nsIDOMNode.h"
+#include "nsISupportsUtils.h"
+#include "nsString.h"
+
+// String classes change too often and I can't keep up.
+// Set this macro to this week's approved case-insensitive compare routine.
+#define MATCHES(tagName, str) tagName.EqualsIgnoreCase(str)
+
+nsHTMLURIRefObject::nsHTMLURIRefObject()
+{
+  mCurAttrIndex = mAttributeCnt = 0;
+}
+
+nsHTMLURIRefObject::~nsHTMLURIRefObject()
+{
+}
+
+//Interfaces for addref and release and queryinterface
+NS_IMPL_ISUPPORTS(nsHTMLURIRefObject, nsIURIRefObject)
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::Reset()
+{
+  mCurAttrIndex = 0;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::GetNextURI(nsAString & aURI)
+{
+  NS_ENSURE_TRUE(mNode, NS_ERROR_NOT_INITIALIZED);
+
+  nsAutoString tagName;
+  nsresult rv = mNode->GetNodeName(tagName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Loop over attribute list:
+  if (!mAttributes)
+  {
+    nsCOMPtr<nsIDOMElement> element (do_QueryInterface(mNode));
+    NS_ENSURE_TRUE(element, NS_ERROR_INVALID_ARG);
+
+    mCurAttrIndex = 0;
+    element->GetAttributes(getter_AddRefs(mAttributes));
+    NS_ENSURE_TRUE(mAttributes, NS_ERROR_NOT_INITIALIZED);
+
+    rv = mAttributes->GetLength(&mAttributeCnt);
+    NS_ENSURE_SUCCESS(rv, rv);
+    NS_ENSURE_TRUE(mAttributeCnt, NS_ERROR_FAILURE);
+    mCurAttrIndex = 0;
+  }
+#ifdef DEBUG_akkana
+  printf("Looking at tag '%s'\n",
+         NS_LossyConvertUTF16toASCII(tagName).get());
+#endif
+  while (mCurAttrIndex < mAttributeCnt)
+  {
+    nsCOMPtr<nsIDOMAttr> attrNode;
+    rv = mAttributes->Item(mCurAttrIndex++, getter_AddRefs(attrNode));
+    NS_ENSURE_SUCCESS(rv, rv);
+    NS_ENSURE_ARG_POINTER(attrNode);
+    nsString curAttr;
+    rv = attrNode->GetName(curAttr);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // href >> A, AREA, BASE, LINK
+#ifdef DEBUG_akkana
+    printf("Trying to match attribute '%s'\n",
+           NS_LossyConvertUTF16toASCII(curAttr).get());
+#endif
+    if (MATCHES(curAttr, "href"))
+    {
+      if (!MATCHES(tagName, "a") && !MATCHES(tagName, "area")
+          && !MATCHES(tagName, "base") && !MATCHES(tagName, "link"))
+        continue;
+      rv = attrNode->GetValue(aURI);
+      NS_ENSURE_SUCCESS(rv, rv);
+      nsString uri (aURI);
+      // href pointing to a named anchor doesn't count
+      if (aURI.First() != char16_t('#'))
+        return NS_OK;
+      aURI.Truncate();
+      return NS_ERROR_INVALID_ARG;
+    }
+    // src >> FRAME, IFRAME, IMG, INPUT, SCRIPT
+    else if (MATCHES(curAttr, "src"))
+    {
+      if (!MATCHES(tagName, "img")
+          && !MATCHES(tagName, "frame") && !MATCHES(tagName, "iframe")
+          && !MATCHES(tagName, "input") && !MATCHES(tagName, "script"))
+        continue;
+      return attrNode->GetValue(aURI);
+    }
+    //<META http-equiv="refresh" content="3,http://www.acme.com/intro.html">
+    else if (MATCHES(curAttr, "content"))
+    {
+      if (!MATCHES(tagName, "meta"))
+        continue;
+    }
+    // longdesc >> FRAME, IFRAME, IMG
+    else if (MATCHES(curAttr, "longdesc"))
+    {
+      if (!MATCHES(tagName, "img")
+          && !MATCHES(tagName, "frame") && !MATCHES(tagName, "iframe"))
+        continue;
+    }
+    // usemap >> IMG, INPUT, OBJECT
+    else if (MATCHES(curAttr, "usemap"))
+    {
+      if (!MATCHES(tagName, "img")
+          && !MATCHES(tagName, "input") && !MATCHES(tagName, "object"))
+        continue;
+    }
+    // action >> FORM
+    else if (MATCHES(curAttr, "action"))
+    {
+      if (!MATCHES(tagName, "form"))
+        continue;
+    }
+    // background >> BODY
+    else if (MATCHES(curAttr, "background"))
+    {
+      if (!MATCHES(tagName, "body"))
+        continue;
+    }
+    // codebase >> OBJECT, APPLET
+    else if (MATCHES(curAttr, "codebase"))
+    {
+      if (!MATCHES(tagName, "meta"))
+        continue;
+    }
+    // classid >> OBJECT
+    else if (MATCHES(curAttr, "classid"))
+    {
+      if (!MATCHES(tagName, "object"))
+        continue;
+    }
+    // data >> OBJECT
+    else if (MATCHES(curAttr, "data"))
+    {
+      if (!MATCHES(tagName, "object"))
+        continue;
+    }
+    // cite >> BLOCKQUOTE, DEL, INS, Q
+    else if (MATCHES(curAttr, "cite"))
+    {
+      if (!MATCHES(tagName, "blockquote") && !MATCHES(tagName, "q")
+          && !MATCHES(tagName, "del") && !MATCHES(tagName, "ins"))
+        continue;
+    }
+    // profile >> HEAD
+    else if (MATCHES(curAttr, "profile"))
+    {
+      if (!MATCHES(tagName, "head"))
+        continue;
+    }
+    // archive attribute on APPLET; warning, it contains a list of URIs.
+    else if (MATCHES(curAttr, "archive"))
+    {
+      if (!MATCHES(tagName, "applet"))
+        continue;
+    }
+  }
+  // Return a code to indicate that there are no more,
+  // to distinguish that case from real errors.
+  return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::RewriteAllURIs(const nsAString & aOldPat,
+                            const nsAString & aNewPat,
+                            bool aMakeRel)
+{
+#ifdef DEBUG_akkana
+  printf("Can't rewrite URIs yet\n");
+#endif
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::GetNode(nsIDOMNode** aNode)
+{
+  NS_ENSURE_TRUE(mNode, NS_ERROR_NOT_INITIALIZED);
+  NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
+  *aNode = mNode.get();
+  NS_ADDREF(*aNode);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::SetNode(nsIDOMNode *aNode)
+{
+  mNode = aNode;
+  nsAutoString dummyURI;
+  if (NS_SUCCEEDED(GetNextURI(dummyURI)))
+  {
+    mCurAttrIndex = 0;    // Reset so we'll get the first node next time
+    return NS_OK;
+  }
+
+  // If there weren't any URIs in the attributes,
+  // then don't accept this node.
+  mNode = 0;
+  return NS_ERROR_INVALID_ARG;
+}
+
+nsresult NS_NewHTMLURIRefObject(nsIURIRefObject** aResult, nsIDOMNode* aNode)
+{
+  nsHTMLURIRefObject* refObject = new nsHTMLURIRefObject();
+  nsresult rv = refObject->SetNode(aNode);
+  if (NS_FAILED(rv)) {
+    *aResult = 0;
+    delete refObject;
+    return rv;
+  }
+  return refObject->QueryInterface(NS_GET_IID(nsIURIRefObject),
+                                   (void**)aResult);
+}
+