Bug 380508 - implement IAccessibleHyperlink, r=aaronlev, sr=neil

git-svn-id: svn://10.0.0.236/trunk@226504 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/accessible/src/msaa/CAccessibleHyperlink.cpp

@@ -0,0 +1,187 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=2:tabstop=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 mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2007
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Alexander Surkov <surkov.alexander@gmail.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 MPL, 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 "CAccessibleHyperlink.h"
+
+#include "Accessible2.h"
+#include "AccessibleHyperlink.h"
+#include "AccessibleHyperlink_i.c"
+
+#include "nsIAccessible.h"
+#include "nsIAccessibleHyperlink.h"
+#include "nsIWinAccessNode.h"
+
+#include "nsCOMPtr.h"
+#include "nsString.h"
+
+#include "nsIURI.h"
+
+// IUnknown
+
+STDMETHODIMP
+CAccessibleHyperlink::QueryInterface(REFIID iid, void** ppv)
+{
+  *ppv = NULL;
+
+  if (IID_IAccessibleHyperlink == iid) {
+    nsCOMPtr<nsIAccessibleHyperLink> acc(do_QueryInterface(this));
+    if (!acc)
+      return E_FAIL;
+
+    *ppv = NS_STATIC_CAST(IAccessibleHyperlink*, this);
+    (NS_REINTERPRET_CAST(IUnknown*, *ppv))->AddRef();
+    return S_OK;
+  }
+
+  return CAccessibleAction::QueryInterface(iid, ppv);
+}
+
+// IAccessibleHyperlink
+
+STDMETHODIMP
+CAccessibleHyperlink::get_anchor(long aIndex, VARIANT *aAnchor)
+{
+  VariantInit(aAnchor);
+
+  nsCOMPtr<nsIAccessibleHyperLink> acc(do_QueryInterface(this));
+  if (!acc)
+    return E_FAIL;
+
+  nsCOMPtr<nsIAccessible> anchor;
+  acc->GetObject(aIndex, getter_AddRefs(anchor));
+  if (!anchor)
+    return E_FAIL;
+
+  nsCOMPtr<nsIWinAccessNode> winAccessNode(do_QueryInterface(anchor));
+  if (!winAccessNode)
+    return E_FAIL;
+
+  void *instancePtr = NULL;
+  nsresult rv =  winAccessNode->QueryNativeInterface(IID_IUnknown,
+                                                     &instancePtr);
+  if (NS_FAILED(rv))
+    return E_FAIL;
+
+  IUnknown *unknownPtr = NS_STATIC_CAST(IUnknown*, instancePtr);
+  aAnchor->ppunkVal = &unknownPtr;
+  aAnchor->vt = VT_UNKNOWN;
+
+  return S_OK;
+}
+
+STDMETHODIMP
+CAccessibleHyperlink::get_anchorTarget(long aIndex, VARIANT *aAnchorTarget)
+{
+  VariantInit(aAnchorTarget);
+
+  nsCOMPtr<nsIAccessibleHyperLink> acc(do_QueryInterface(this));
+  if (!acc)
+    return E_FAIL;
+
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = acc->GetURI(aIndex, getter_AddRefs(uri));
+  if (NS_SUCCEEDED(rv))
+    return E_FAIL;
+
+  nsCAutoString prePath;
+  rv = uri->GetPrePath(prePath);
+  if (NS_SUCCEEDED(rv))
+    return E_FAIL;
+
+  nsCAutoString path;
+  rv = uri->GetPath(path);
+  if (NS_SUCCEEDED(rv))
+    return E_FAIL;
+
+  nsAutoString stringURI;
+  AppendUTF8toUTF16(prePath, stringURI);
+  AppendUTF8toUTF16(path, stringURI);
+
+  aAnchorTarget->vt = VT_BSTR;
+  return ::SysReAllocStringLen(&aAnchorTarget->bstrVal, stringURI.get(),
+                               stringURI.Length());
+}
+
+STDMETHODIMP
+CAccessibleHyperlink::get_startIndex(long *aIndex)
+{
+  *aIndex = 0;
+
+  nsCOMPtr<nsIAccessibleHyperLink> acc(do_QueryInterface(this));
+  if (!acc)
+    return E_FAIL;
+
+  PRInt32 index = 0;
+  nsresult rv = acc->GetStartIndex(&index);
+  *aIndex = index;
+
+  return NS_FAILED(rv) ? E_FAIL : S_OK;
+}
+
+STDMETHODIMP
+CAccessibleHyperlink::get_endIndex(long *aIndex)
+{
+  *aIndex = 0;
+
+  nsCOMPtr<nsIAccessibleHyperLink> acc(do_QueryInterface(this));
+  if (!acc)
+    return E_FAIL;
+
+  PRInt32 index = 0;
+  nsresult rv = acc->GetEndIndex(&index);
+  *aIndex = index;
+
+  return NS_FAILED(rv) ? E_FAIL : S_OK;
+}
+
+STDMETHODIMP
+CAccessibleHyperlink::get_valid(boolean *aValid)
+{
+  nsCOMPtr<nsIAccessibleHyperLink> acc(do_QueryInterface(this));
+  if (!acc)
+    return E_FAIL;
+
+  PRBool isValid = PR_FALSE;
+  nsresult rv = acc->IsValid(&isValid);
+  *aValid = isValid;
+
+  return NS_FAILED(rv) ? E_FAIL : S_OK;
+}
+