Adding html URI ref object to the build. r=brade sr=kin. Work in progress.

editor/base/Makefile.in

@@ -99,6 +99,7 @@ CPPSRCS += nsEditorParserObserver.cpp     \
            nsHTMLEditorStyle.cpp          \
            nsHTMLEditRules.cpp            \
            nsInterfaceState.cpp           \
+           nsHTMLURIRefObject.cpp         \
            nsTableEditor.cpp              \
            nsWSRunObject.cpp              \
            TextEditorTest.cpp             \

editor/base/makefile.win

@@ -137,6 +137,7 @@ CPPSRCS = $(CPPSRCS)                      \
            nsHTMLEditorStyle.cpp          \
            nsHTMLEditRules.cpp            \
            nsInterfaceState.cpp           \
+           nsHTMLURIRefObject.cpp         \
            nsTableEditor.cpp              \
            nsWSRunObject.cpp              \
            TextEditorTest.cpp             \
@@ -155,6 +156,7 @@ CPP_OBJS = $(CPP_OBJS)                                \
            .\$(OBJDIR)\nsHTMLEditorStyle.obj          \
            .\$(OBJDIR)\nsHTMLEditRules.obj            \
            .\$(OBJDIR)\nsInterfaceState.obj           \
+           .\$(OBJDIR)\nsHTMLURIRefObject.obj         \
            .\$(OBJDIR)\nsTableEditor.obj              \
            .\$(OBJDIR)\nsWSRunObject.obj              \
            .\$(OBJDIR)\TextEditorTest.obj             \

editor/base/nsHTMLURIRefObject.cpp

@@ -0,0 +1,309 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+/* 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, nsnull, theLoadGroup);
+  if (!theChannel)
+    error;
+  nsCOMPtr<nsILoadGroup> theLoadGroup(do_CreateInstance(NS_LOADGROUP_CONTRACTID));
+  if (!theLoadGroup)
+    error;
+		nsCOMPtr<nsIStreamListener> listener(NS_STATIC_CAST(nsIStreamListener*, qaBrowserImpl));
+		//nsCOMPtr<nsIWeakReference> thisListener(dont_AddRef(NS_GetWeakReference(listener)));
+		//qaWebBrowser->AddWebBrowserListener(thisListener, NS_GET_IID(nsIStreamListener));
+
+		// this calls nsIStreamListener::OnDataAvailable()
+		rv = theChannel->AsyncOpen(listener, nsnull);
+
+		nsCOMPtr<nsIRequest> theRequest = do_QueryInterface(theChannel);
+    // Now we can do things on nsIRequest (like what?)
+ */
+
+#include "nsHTMLURIRefObject.h"
+
+#include "nsAWritableString.h"
+#include "nsString.h"
+#include "nsIDOMAttr.h"
+#include "nsIDOMElement.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()
+{
+  NS_INIT_REFCNT();
+  mCurAttrIndex = mAttributeCnt = 0;
+}
+
+nsHTMLURIRefObject::~nsHTMLURIRefObject()
+{
+}
+
+//Interfaces for addref and release and queryinterface
+NS_IMPL_ISUPPORTS(nsHTMLURIRefObject, NS_GET_IID(nsIURIRefObject))
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::Reset()
+{
+  mCurAttrIndex = 0;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::GetNextURI(nsAWritableString & aURI)
+{
+  if (!mNode)
+    return NS_ERROR_NOT_INITIALIZED;
+
+  nsAutoString tagName;
+  nsresult rv = mNode->GetNodeName(tagName);
+  if (NS_FAILED(rv))
+  return rv;
+
+  // Loop over attribute list:
+  if (!mAttributes)
+  {
+    nsCOMPtr<nsIDOMElement> element (do_QueryInterface(mNode));
+    if (!element)
+      return NS_ERROR_INVALID_ARG;
+
+    mCurAttrIndex = 0;
+    mNode->GetAttributes(getter_AddRefs(mAttributes));
+    if (!mAttributes)
+      return NS_ERROR_NOT_INITIALIZED;
+
+    rv = mAttributes->GetLength(&mAttributeCnt);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (!mAttributeCnt) return NS_ERROR_FAILURE;
+    mCurAttrIndex = 0;
+  }
+
+  while (mCurAttrIndex < mAttributeCnt)
+  {
+    nsCOMPtr<nsIDOMNode> attrNode;
+    rv = mAttributes->Item(mCurAttrIndex++, getter_AddRefs(attrNode));
+      // XXX Does Item() addref, or not?
+      // The comparable code in nsEditor assumes it doesn't.
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (!attrNode) return NS_ERROR_FAILURE;
+    nsCOMPtr<nsIDOMAttr> curAttrNode (do_QueryInterface(attrNode));
+    if (!curAttrNode) return NS_ERROR_FAILURE;
+    nsString curAttr;
+    rv = curAttrNode->GetName(curAttr);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // href >> A, AREA, BASE, LINK
+    if (MATCHES(curAttr, "href"))
+    {
+      if (!MATCHES(tagName, "a") && !MATCHES(tagName, "area")
+          && !MATCHES(tagName, "base") && !MATCHES(tagName, "link"))
+        continue;
+      rv = curAttrNode->GetValue(aURI);
+      NS_ENSURE_SUCCESS(rv, rv);
+      nsString uri (aURI);
+      // href pointing to a named anchor doesn't count
+      if (aURI.First() != PRUnichar('#'))
+        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 curAttrNode->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;
+    }
+  }
+  // We should return some specific code here to indicate that
+  // there are no more, to distinguish that case from real errors.
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::RewriteAllURIs(const nsAReadableString & aOldPat,
+                            const nsAReadableString & aNewPat,
+                            PRBool aMakeRel)
+{
+  printf("Can't rewrite URIs yet\n");
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::GetNode(nsIDOMNode** aNode)
+{
+  if (!mNode)
+    return NS_ERROR_NOT_INITIALIZED;
+  if (!aNode)
+    return 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();
+  if (!refObject) return NS_ERROR_OUT_OF_MEMORY;
+  nsresult rv = refObject->SetNode(aNode);
+  if (!NS_SUCCEEDED(rv)) {
+    *aResult = 0;
+    delete refObject;
+    return rv;
+  }
+  return refObject->QueryInterface(NS_GET_IID(nsIURIRefObject),
+                                   (void**)aResult);
+}
+

editor/base/nsHTMLURIRefObject.h

@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+
+#include "nsIURIRefObject.h"
+
+#include "nsCOMPtr.h"
+#include "nsIDOMNode.h"
+#include "nsIDOMNamedNodeMap.h"
+#include "nsString.h"
+
+#ifndef nsHTMLURIRefObject_h__
+#define nsHTMLURIRefObject_h__
+
+#define NS_URI_REF_OBJECT_CID                          \
+{ /* {bdd79df6-1dd1-11b2-b29c-c3d63a58f1d2} */         \
+    0xbdd79df6, 0x1dd1, 0x11b2,                        \
+    { 0xb2, 0x9c, 0xc3, 0xd6, 0x3a, 0x58, 0xf1, 0xd2 } \
+}
+
+class nsHTMLURIRefObject : public nsIURIRefObject
+{
+public:
+  nsHTMLURIRefObject();
+  virtual ~nsHTMLURIRefObject();
+
+  // Interfaces for addref and release and queryinterface
+  NS_DECL_ISUPPORTS
+
+  NS_DECL_NSIURIREFOBJECT
+
+protected:
+  nsCOMPtr<nsIDOMNode> mNode;
+  nsCOMPtr<nsIDOMNamedNodeMap> mAttributes;
+  PRUint32 mCurAttrIndex;
+  PRUint32 mAttributeCnt;
+};
+
+nsresult NS_NewHTMLURIRefObject(nsIURIRefObject** aResult, nsIDOMNode* aNode);
+
+#endif /* nsHTMLURIRefObject_h__ */
+

editor/idl/MANIFEST

@@ -29,6 +29,7 @@ nsIEditorController.idl
 nsPIEditorTransaction.idl
 nsIEditor.idl
 nsIHTMLEditor.idl
+nsIURIRefObject.idl
 nsICiter.idl
 nsIEditActionListener.idl
 nsIEditorIMESupport.idl

editor/idl/Makefile.in

@@ -41,6 +41,7 @@ XPIDLSRCS	= \
 		nsIEditorSpellCheck.idl \
 		nsIHTMLEditor.idl \
 		nsIPlaintextEditor.idl \
+		nsIURIRefObject.idl \
 		nsPIEditorTransaction.idl \
 		$(NULL)
 

editor/idl/makefile.win

@@ -38,6 +38,7 @@ XPIDLSRCS = .\nsICiter.idl \
 		.\nsIEditorSpellCheck.idl \
 		.\nsIHTMLEditor.idl \
 		.\nsIPlaintextEditor.idl \
+		.\nsIURIRefObject.idl \
 		.\nsPIEditorTransaction.idl \
             $(NULL)
 

editor/idl/nsIURIRefObject.idl

@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+#ifndef nsIURIRefObject_h__
+#define nsIURIRefObject_h__
+
+#include "nsISupports.idl"
+#include "domstubs.idl"
+
+interface nsIDOMNode;
+
+/** A class which can represent any node which points to an
+  * external URI, e.g. <a>, <img>, <script> etc,
+  * and has the capability to rewrite URLs to be
+  * relative or absolute.
+  * Used by the editor but not dependant on it.
+  */
+
+[scriptable, uuid(2226927e-1dd2-11b2-b57f-faab47288563)]
+
+interface nsIURIRefObject  : nsISupports
+{
+  attribute nsIDOMNode node;
+
+  /**
+   * Go back to the beginning of the attribute list.
+   */
+  void Reset();
+
+  /**
+   * Return the next rewritable URI.
+   */
+  DOMString GetNextURI();
+
+  /**
+   * Go back to the beginning of the attribute list
+   *
+   * @param aOldPat  Old pattern to be replaced, e.g. file:///a/b/
+   * @param aNewPat  New pattern to be replaced, e.g. http://mypage.aol.com/
+   * @param aMakeRel Rewrite links as relative vs. absolute
+   */
+  void RewriteAllURIs(in DOMString aOldPat, in DOMString aNewPat,
+                      in boolean aMakeRel);
+};
+
+#endif /* nsIURIRefObject_h__ */
+

editor/libeditor/html/nsHTMLURIRefObject.cpp

@@ -0,0 +1,309 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+/* 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, nsnull, theLoadGroup);
+  if (!theChannel)
+    error;
+  nsCOMPtr<nsILoadGroup> theLoadGroup(do_CreateInstance(NS_LOADGROUP_CONTRACTID));
+  if (!theLoadGroup)
+    error;
+		nsCOMPtr<nsIStreamListener> listener(NS_STATIC_CAST(nsIStreamListener*, qaBrowserImpl));
+		//nsCOMPtr<nsIWeakReference> thisListener(dont_AddRef(NS_GetWeakReference(listener)));
+		//qaWebBrowser->AddWebBrowserListener(thisListener, NS_GET_IID(nsIStreamListener));
+
+		// this calls nsIStreamListener::OnDataAvailable()
+		rv = theChannel->AsyncOpen(listener, nsnull);
+
+		nsCOMPtr<nsIRequest> theRequest = do_QueryInterface(theChannel);
+    // Now we can do things on nsIRequest (like what?)
+ */
+
+#include "nsHTMLURIRefObject.h"
+
+#include "nsAWritableString.h"
+#include "nsString.h"
+#include "nsIDOMAttr.h"
+#include "nsIDOMElement.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()
+{
+  NS_INIT_REFCNT();
+  mCurAttrIndex = mAttributeCnt = 0;
+}
+
+nsHTMLURIRefObject::~nsHTMLURIRefObject()
+{
+}
+
+//Interfaces for addref and release and queryinterface
+NS_IMPL_ISUPPORTS(nsHTMLURIRefObject, NS_GET_IID(nsIURIRefObject))
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::Reset()
+{
+  mCurAttrIndex = 0;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::GetNextURI(nsAWritableString & aURI)
+{
+  if (!mNode)
+    return NS_ERROR_NOT_INITIALIZED;
+
+  nsAutoString tagName;
+  nsresult rv = mNode->GetNodeName(tagName);
+  if (NS_FAILED(rv))
+  return rv;
+
+  // Loop over attribute list:
+  if (!mAttributes)
+  {
+    nsCOMPtr<nsIDOMElement> element (do_QueryInterface(mNode));
+    if (!element)
+      return NS_ERROR_INVALID_ARG;
+
+    mCurAttrIndex = 0;
+    mNode->GetAttributes(getter_AddRefs(mAttributes));
+    if (!mAttributes)
+      return NS_ERROR_NOT_INITIALIZED;
+
+    rv = mAttributes->GetLength(&mAttributeCnt);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (!mAttributeCnt) return NS_ERROR_FAILURE;
+    mCurAttrIndex = 0;
+  }
+
+  while (mCurAttrIndex < mAttributeCnt)
+  {
+    nsCOMPtr<nsIDOMNode> attrNode;
+    rv = mAttributes->Item(mCurAttrIndex++, getter_AddRefs(attrNode));
+      // XXX Does Item() addref, or not?
+      // The comparable code in nsEditor assumes it doesn't.
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (!attrNode) return NS_ERROR_FAILURE;
+    nsCOMPtr<nsIDOMAttr> curAttrNode (do_QueryInterface(attrNode));
+    if (!curAttrNode) return NS_ERROR_FAILURE;
+    nsString curAttr;
+    rv = curAttrNode->GetName(curAttr);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // href >> A, AREA, BASE, LINK
+    if (MATCHES(curAttr, "href"))
+    {
+      if (!MATCHES(tagName, "a") && !MATCHES(tagName, "area")
+          && !MATCHES(tagName, "base") && !MATCHES(tagName, "link"))
+        continue;
+      rv = curAttrNode->GetValue(aURI);
+      NS_ENSURE_SUCCESS(rv, rv);
+      nsString uri (aURI);
+      // href pointing to a named anchor doesn't count
+      if (aURI.First() != PRUnichar('#'))
+        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 curAttrNode->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;
+    }
+  }
+  // We should return some specific code here to indicate that
+  // there are no more, to distinguish that case from real errors.
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::RewriteAllURIs(const nsAReadableString & aOldPat,
+                            const nsAReadableString & aNewPat,
+                            PRBool aMakeRel)
+{
+  printf("Can't rewrite URIs yet\n");
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsHTMLURIRefObject::GetNode(nsIDOMNode** aNode)
+{
+  if (!mNode)
+    return NS_ERROR_NOT_INITIALIZED;
+  if (!aNode)
+    return 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();
+  if (!refObject) return NS_ERROR_OUT_OF_MEMORY;
+  nsresult rv = refObject->SetNode(aNode);
+  if (!NS_SUCCEEDED(rv)) {
+    *aResult = 0;
+    delete refObject;
+    return rv;
+  }
+  return refObject->QueryInterface(NS_GET_IID(nsIURIRefObject),
+                                   (void**)aResult);
+}
+

editor/libeditor/html/nsHTMLURIRefObject.h

@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+
+#include "nsIURIRefObject.h"
+
+#include "nsCOMPtr.h"
+#include "nsIDOMNode.h"
+#include "nsIDOMNamedNodeMap.h"
+#include "nsString.h"
+
+#ifndef nsHTMLURIRefObject_h__
+#define nsHTMLURIRefObject_h__
+
+#define NS_URI_REF_OBJECT_CID                          \
+{ /* {bdd79df6-1dd1-11b2-b29c-c3d63a58f1d2} */         \
+    0xbdd79df6, 0x1dd1, 0x11b2,                        \
+    { 0xb2, 0x9c, 0xc3, 0xd6, 0x3a, 0x58, 0xf1, 0xd2 } \
+}
+
+class nsHTMLURIRefObject : public nsIURIRefObject
+{
+public:
+  nsHTMLURIRefObject();
+  virtual ~nsHTMLURIRefObject();
+
+  // Interfaces for addref and release and queryinterface
+  NS_DECL_ISUPPORTS
+
+  NS_DECL_NSIURIREFOBJECT
+
+protected:
+  nsCOMPtr<nsIDOMNode> mNode;
+  nsCOMPtr<nsIDOMNamedNodeMap> mAttributes;
+  PRUint32 mCurAttrIndex;
+  PRUint32 mAttributeCnt;
+};
+
+nsresult NS_NewHTMLURIRefObject(nsIURIRefObject** aResult, nsIDOMNode* aNode);
+
+#endif /* nsHTMLURIRefObject_h__ */
+