1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/accessible/src/windows/msaa/HyperTextAccessibleWrap.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,102 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:expandtab:shiftwidth=2:tabstop=2:
1.6 + */
1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#include "HyperTextAccessibleWrap.h"
1.12 +#include "Accessible-inl.h"
1.13 +
1.14 +#include "nsEventShell.h"
1.15 +
1.16 +#include "mozilla/StaticPtr.h"
1.17 +
1.18 +using namespace mozilla;
1.19 +using namespace mozilla::a11y;
1.20 +
1.21 +StaticRefPtr<Accessible> HyperTextAccessibleWrap::sLastTextChangeAcc;
1.22 +StaticAutoPtr<nsString> HyperTextAccessibleWrap::sLastTextChangeString;
1.23 +uint32_t HyperTextAccessibleWrap::sLastTextChangeStart = 0;
1.24 +uint32_t HyperTextAccessibleWrap::sLastTextChangeEnd = 0;
1.25 +bool HyperTextAccessibleWrap::sLastTextChangeWasInsert = false;
1.26 +
1.27 +NS_IMPL_ISUPPORTS_INHERITED0(HyperTextAccessibleWrap,
1.28 + HyperTextAccessible)
1.29 +
1.30 +STDMETHODIMP
1.31 +HyperTextAccessibleWrap::QueryInterface(REFIID aIID, void** aInstancePtr)
1.32 +{
1.33 + if (!aInstancePtr)
1.34 + return E_FAIL;
1.35 +
1.36 + *aInstancePtr = nullptr;
1.37 +
1.38 + if (IsTextRole()) {
1.39 + if (aIID == IID_IAccessibleText)
1.40 + *aInstancePtr =
1.41 + static_cast<IAccessibleText*>(static_cast<ia2AccessibleText*>(this));
1.42 + else if (aIID == IID_IAccessibleHypertext)
1.43 + *aInstancePtr = static_cast<IAccessibleHypertext*>(this);
1.44 + else if (aIID == IID_IAccessibleEditableText)
1.45 + *aInstancePtr = static_cast<IAccessibleEditableText*>(this);
1.46 +
1.47 + if (*aInstancePtr) {
1.48 + AddRef();
1.49 + return S_OK;
1.50 + }
1.51 + }
1.52 +
1.53 + return AccessibleWrap::QueryInterface(aIID, aInstancePtr);
1.54 +}
1.55 +
1.56 +nsresult
1.57 +HyperTextAccessibleWrap::HandleAccEvent(AccEvent* aEvent)
1.58 +{
1.59 + uint32_t eventType = aEvent->GetEventType();
1.60 +
1.61 + if (eventType == nsIAccessibleEvent::EVENT_TEXT_REMOVED ||
1.62 + eventType == nsIAccessibleEvent::EVENT_TEXT_INSERTED) {
1.63 + Accessible* accessible = aEvent->GetAccessible();
1.64 + if (accessible && accessible->IsHyperText()) {
1.65 + sLastTextChangeAcc = accessible;
1.66 + if (!sLastTextChangeString)
1.67 + sLastTextChangeString = new nsString();
1.68 +
1.69 + AccTextChangeEvent* event = downcast_accEvent(aEvent);
1.70 + event->GetModifiedText(*sLastTextChangeString);
1.71 + sLastTextChangeStart = event->GetStartOffset();
1.72 + sLastTextChangeEnd = sLastTextChangeStart + event->GetLength();
1.73 + sLastTextChangeWasInsert = event->IsTextInserted();
1.74 + }
1.75 + }
1.76 +
1.77 + return HyperTextAccessible::HandleAccEvent(aEvent);
1.78 +}
1.79 +
1.80 +nsresult
1.81 +HyperTextAccessibleWrap::GetModifiedText(bool aGetInsertedText,
1.82 + nsAString& aText,
1.83 + uint32_t* aStartOffset,
1.84 + uint32_t* aEndOffset)
1.85 +{
1.86 + aText.Truncate();
1.87 + *aStartOffset = 0;
1.88 + *aEndOffset = 0;
1.89 +
1.90 + if (!sLastTextChangeAcc)
1.91 + return NS_OK;
1.92 +
1.93 + if (aGetInsertedText != sLastTextChangeWasInsert)
1.94 + return NS_OK;
1.95 +
1.96 + if (sLastTextChangeAcc != this)
1.97 + return NS_OK;
1.98 +
1.99 + *aStartOffset = sLastTextChangeStart;
1.100 + *aEndOffset = sLastTextChangeEnd;
1.101 + aText.Append(*sLastTextChangeString);
1.102 +
1.103 + return NS_OK;
1.104 +}
1.105 +
