Landing of the XTF branch, bug#253225. XTF is the eXtensible Tag

Framework; see mozilla/content/xtf/readme.txt. r=bryner, sr=jst. Code
is not enabled by default (requires --enable-xtf configure option).


git-svn-id: svn://10.0.0.236/trunk@163386 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/content/xtf/src/nsXTFSVGVisualWrapper.cpp

@@ -0,0 +1,172 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ----- BEGIN LICENSE BLOCK -----
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla 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/MPL/
+ *
+ * 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 the Mozilla XTF project.
+ *
+ * The Initial Developer of the Original Code is 
+ * Alex Fritze.
+ * Portions created by the Initial Developer are Copyright (C) 2004
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *    Alex Fritze <alex@croczilla.com> (original author)
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or 
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the NPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ----- END LICENSE BLOCK ----- */
+
+#include "nsCOMPtr.h"
+#include "nsXTFVisualWrapper.h"
+#include "nsIXTFSVGVisual.h"
+#include "nsXTFWeakTearoff.h"
+#include "nsIXTFSVGVisualWrapper.h"
+
+typedef nsXTFVisualWrapper nsXTFSVGVisualWrapperBase;
+
+////////////////////////////////////////////////////////////////////////
+// nsXTFSVGVisualWrapper class
+class nsXTFSVGVisualWrapper : public nsXTFSVGVisualWrapperBase,
+                              public nsIXTFSVGVisualWrapper
+{
+protected:
+  friend nsresult
+  NS_NewXTFSVGVisualWrapper(nsIXTFSVGVisual* xtfElement,
+                            nsINodeInfo* ni,
+                            nsIContent** aResult);
+
+  nsXTFSVGVisualWrapper(nsINodeInfo* ni, nsIXTFSVGVisual* xtfElement);
+  virtual ~nsXTFSVGVisualWrapper();
+  nsresult Init();
+  
+public:
+  // nsISupports interface
+  NS_DECL_ISUPPORTS_INHERITED
+
+  // nsIXTFElementWrapperPrivate interface
+  virtual PRUint32 GetElementType() { return nsIXTFElement::ELEMENT_TYPE_SVG_VISUAL; }
+  
+  // nsIXTFSVGVisualWrapper interface
+  NS_DECL_NSIXTFSVGVISUALWRAPPER
+  
+  // nsIXTFElementWrapper interface
+  NS_FORWARD_NSIXTFELEMENTWRAPPER(nsXTFSVGVisualWrapperBase::)
+
+private:
+  virtual nsIXTFElement *GetXTFElement() const { return mXTFElement; }
+  virtual nsIXTFVisual *GetXTFVisual() const { return mXTFElement; }
+  
+  nsCOMPtr<nsIXTFSVGVisual> mXTFElement;
+};
+
+//----------------------------------------------------------------------
+// implementation:
+
+nsXTFSVGVisualWrapper::nsXTFSVGVisualWrapper(nsINodeInfo* aNodeInfo,
+                                             nsIXTFSVGVisual* xtfElement)
+    : nsXTFSVGVisualWrapperBase(aNodeInfo), mXTFElement(xtfElement)
+{
+#ifdef DEBUG
+//  printf("nsXTFSVGVisualWrapper CTOR\n");
+#endif
+  NS_ASSERTION(mXTFElement, "xtfElement is null");
+}
+
+nsresult
+nsXTFSVGVisualWrapper::Init()
+{
+  nsXTFSVGVisualWrapperBase::Init();
+
+  // pass a weak wrapper (non base object ref-counted), so that
+  // our mXTFElement can safely addref/release.
+  nsISupports *weakWrapper=nsnull;
+  NS_NewXTFWeakTearoff(NS_GET_IID(nsIXTFSVGVisualWrapper),
+                       (nsIXTFSVGVisualWrapper*)this,
+                       &weakWrapper);
+  if (!weakWrapper) {
+    NS_ERROR("could not construct weak wrapper");
+    return NS_ERROR_FAILURE;
+  }
+  
+  mXTFElement->OnCreated((nsIXTFSVGVisualWrapper*)weakWrapper);
+  weakWrapper->Release();
+  
+  return NS_OK;
+}
+
+nsXTFSVGVisualWrapper::~nsXTFSVGVisualWrapper()
+{
+  mXTFElement->OnDestroyed();
+  mXTFElement = nsnull;
+  
+#ifdef DEBUG
+//  printf("nsXTFSVGVisualWrapper DTOR\n");
+#endif
+}
+
+nsresult
+NS_NewXTFSVGVisualWrapper(nsIXTFSVGVisual* xtfElement,
+                          nsINodeInfo* ni,
+                          nsIContent** aResult)
+{
+  *aResult = nsnull;
+
+  if (!xtfElement) {
+    NS_ERROR("can't construct an xtf wrapper without an xtf element");
+    return NS_ERROR_FAILURE;
+  }
+  
+  nsXTFSVGVisualWrapper* result = new nsXTFSVGVisualWrapper(ni, xtfElement);
+  if (!result)
+    return NS_ERROR_OUT_OF_MEMORY;
+
+  NS_ADDREF(result);
+
+  nsresult rv = result->Init();
+
+  if (NS_FAILED(rv)) {
+    NS_RELEASE(result);
+    return rv;
+  }
+
+  *aResult = result;
+  return NS_OK;
+}
+
+//----------------------------------------------------------------------
+// nsISupports implementation
+
+
+NS_IMPL_ADDREF_INHERITED(nsXTFSVGVisualWrapper, nsXTFSVGVisualWrapperBase)
+NS_IMPL_RELEASE_INHERITED(nsXTFSVGVisualWrapper, nsXTFSVGVisualWrapperBase)
+
+NS_INTERFACE_MAP_BEGIN(nsXTFSVGVisualWrapper)
+  NS_INTERFACE_MAP_ENTRY(nsIXTFSVGVisualWrapper)
+NS_INTERFACE_MAP_END_INHERITING(nsXTFSVGVisualWrapperBase)
+
+//----------------------------------------------------------------------
+// nsIXTFSVGVisualWrapper implementation:
+
+// XXX nothing yet
+
+