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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /accessible/windows/msaa/EnumVariant.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'accessible/windows/msaa/EnumVariant.cpp')
-rw-r--r--accessible/windows/msaa/EnumVariant.cpp108
1 files changed, 108 insertions, 0 deletions
diff --git a/accessible/windows/msaa/EnumVariant.cpp b/accessible/windows/msaa/EnumVariant.cpp
new file mode 100644
index 000000000..86c81a105
--- /dev/null
+++ b/accessible/windows/msaa/EnumVariant.cpp
@@ -0,0 +1,108 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "EnumVariant.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// ChildrenEnumVariant
+////////////////////////////////////////////////////////////////////////////////
+
+IMPL_IUNKNOWN_QUERY_HEAD(ChildrenEnumVariant)
+IMPL_IUNKNOWN_QUERY_IFACE(IEnumVARIANT)
+IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(mAnchorAcc)
+
+STDMETHODIMP
+ChildrenEnumVariant::Next(ULONG aCount, VARIANT FAR* aItems,
+ ULONG FAR* aCountFetched)
+{
+ A11Y_TRYBLOCK_BEGIN
+
+ if (!aItems || !aCountFetched)
+ return E_INVALIDARG;
+
+ *aCountFetched = 0;
+
+ if (mAnchorAcc->IsDefunct() || mAnchorAcc->GetChildAt(mCurIndex) != mCurAcc)
+ return CO_E_OBJNOTCONNECTED;
+
+ ULONG countFetched = 0;
+ while (mCurAcc && countFetched < aCount) {
+ VariantInit(aItems + countFetched);
+
+ IDispatch* accNative = AccessibleWrap::NativeAccessible(mCurAcc);
+
+ ++mCurIndex;
+ mCurAcc = mAnchorAcc->GetChildAt(mCurIndex);
+
+ // Don't output the accessible and count it as having been fetched unless
+ // it is non-null
+ MOZ_ASSERT(accNative);
+ if (!accNative) {
+ continue;
+ }
+
+ aItems[countFetched].pdispVal = accNative;
+ aItems[countFetched].vt = VT_DISPATCH;
+ ++countFetched;
+ }
+
+ (*aCountFetched) = countFetched;
+
+ return countFetched < aCount ? S_FALSE : S_OK;
+
+ A11Y_TRYBLOCK_END
+}
+
+STDMETHODIMP
+ChildrenEnumVariant::Skip(ULONG aCount)
+{
+ A11Y_TRYBLOCK_BEGIN
+
+ if (mAnchorAcc->IsDefunct() || mAnchorAcc->GetChildAt(mCurIndex) != mCurAcc)
+ return CO_E_OBJNOTCONNECTED;
+
+ mCurIndex += aCount;
+ mCurAcc = mAnchorAcc->GetChildAt(mCurIndex);
+
+ return mCurAcc ? S_OK : S_FALSE;
+
+ A11Y_TRYBLOCK_END
+}
+
+STDMETHODIMP
+ChildrenEnumVariant::Reset()
+{
+ A11Y_TRYBLOCK_BEGIN
+
+ if (mAnchorAcc->IsDefunct())
+ return CO_E_OBJNOTCONNECTED;
+
+ mCurIndex = 0;
+ mCurAcc = mAnchorAcc->GetChildAt(0);
+
+ return S_OK;
+
+ A11Y_TRYBLOCK_END
+}
+
+STDMETHODIMP
+ChildrenEnumVariant::Clone(IEnumVARIANT** aEnumVariant)
+{
+ A11Y_TRYBLOCK_BEGIN
+
+ if (!aEnumVariant)
+ return E_INVALIDARG;
+
+ *aEnumVariant = new ChildrenEnumVariant(*this);
+ (*aEnumVariant)->AddRef();
+
+ return S_OK;
+
+ A11Y_TRYBLOCK_END
+}