C++ (Cpp) COMPtr::get_attribute Examples

Example #1

File: AccessibilityControllerWin.cpp Project: Comcast/WebKitForWayland

static COMPtr<IAccessible> findAccessibleObjectById(AccessibilityUIElement parentObject, BSTR idAttribute)
{
    COMPtr<IAccessible> parentIAccessible = parentObject.platformUIElement();

    COMPtr<IServiceProvider> serviceProvider(Query, parentIAccessible);
    if (!serviceProvider)
        return 0;

    COMPtr<IAccessibleComparable> comparable = comparableObject(serviceProvider);
    if (!comparable)
        return 0;

    _variant_t value;
    _bstr_t elementIdAttributeKey(L"AXDRTElementIdAttribute");
    if (SUCCEEDED(comparable->get_attribute(elementIdAttributeKey, &value.GetVARIANT()))) {
        ASSERT(V_VT(&value) == VT_BSTR);
        if (VARCMP_EQ == ::VarBstrCmp(value.bstrVal, idAttribute, LOCALE_USER_DEFAULT, 0))
            return parentIAccessible;
    }

    long childCount = parentObject.childrenCount();
    if (!childCount)
        return nullptr;

    COMPtr<IAccessible> result;
    for (long i = 0; i < childCount; ++i) {
        AccessibilityUIElement childAtIndex = parentObject.getChildAtIndex(i);

        result = findAccessibleObjectById(childAtIndex, idAttribute);
        if (result)
            return result;
    }

    return nullptr;
}

Example #2

File: AccessibilityUIElementWin.cpp Project: cheekiatng/webkit

AccessibilityUIElement AccessibilityUIElement::titleUIElement()
{
    COMPtr<IAccessible> platformElement = platformUIElement();

    COMPtr<IAccessibleComparable> comparable = comparableObject(platformElement.get());
    if (!comparable)
        return 0;

    _variant_t value;
    _bstr_t titleUIElementAttributeKey(L"AXTitleUIElementAttribute");
    if (FAILED(comparable->get_attribute(titleUIElementAttributeKey, &value.GetVARIANT())))
        return nullptr;

    if (V_VT(&value) == VT_EMPTY)
        return nullptr;

    ASSERT(V_VT(&value) == VT_UNKNOWN);

    if (V_VT(&value) != VT_UNKNOWN)
        return nullptr;

    COMPtr<IAccessible> titleElement(Query, value.punkVal);
    if (value.punkVal)
        value.punkVal->Release();

    return titleElement;
}

Example #3

File: AccessibilityUIElementWin.cpp Project: Comcast/WebKitForWayland

JSStringRef AccessibilityUIElement::selectedTextRange()
{
    COMPtr<IAccessibleComparable> comparable = comparableObject(platformUIElement().get());
    if (!comparable)
        return JSStringCreateWithCharacters(0, 0);

    _variant_t value;
    if (FAILED(comparable->get_attribute(_bstr_t(L"AXSelectedTextRangeAttribute"), &value.GetVARIANT())))
        return JSStringCreateWithCharacters(0, 0);    

    ASSERT(V_VT(&value) == VT_BSTR);
    return JSStringCreateWithBSTR(value.bstrVal);
}

Example #4

File: AccessibilityUIElementWin.cpp Project: MYSHLIFE/webkit

AccessibilityUIElement AccessibilityUIElement::titleUIElement()
{
    COMPtr<IAccessible> platformElement = platformUIElement();

    COMPtr<IAccessibleComparable> comparable = comparableObject(platformElement.get());
    if (!comparable)
        return 0;

    VARIANT value;
    ::VariantInit(&value);

    _bstr_t titleUIElementAttributeKey(L"AXTitleUIElementAttribute");
    if (FAILED(comparable->get_attribute(titleUIElementAttributeKey, &value))) {
        ::VariantClear(&value);
        return 0;
    }

    if (V_VT(&value) == VT_EMPTY) {
        ::VariantClear(&value);
        return 0;
    }

    ASSERT(V_VT(&value) == VT_UNKNOWN);

    if (V_VT(&value) != VT_UNKNOWN) {
        ::VariantClear(&value);
        return 0;
    }

    COMPtr<IAccessible> titleElement(Query, value.punkVal);
    if (value.punkVal)
        value.punkVal->Release();
    ::VariantClear(&value);

    return titleElement;
}