gecko-dev/accessible/windows/ProxyWrappers.h

86 строки
2.4 KiB
C++

/* -*- 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/. *
*/
#ifndef MOZILLA_A11Y_ProxyWrappers_h
#define MOZILLA_A11Y_ProxyWrappers_h
#include "HyperTextAccessible.h"
namespace mozilla {
namespace a11y {
class ProxyAccessibleWrap : public AccessibleWrap {
public:
explicit ProxyAccessibleWrap(ProxyAccessible* aProxy)
: AccessibleWrap(nullptr, nullptr) {
mType = eProxyType;
mBits.proxy = aProxy;
}
virtual void Shutdown() override {
mBits.proxy = nullptr;
mStateFlags |= eIsDefunct;
}
virtual void GetNativeInterface(void** aOutAccessible) override {
mBits.proxy->GetCOMInterface(aOutAccessible);
}
};
class HyperTextProxyAccessibleWrap : public HyperTextAccessibleWrap {
public:
explicit HyperTextProxyAccessibleWrap(ProxyAccessible* aProxy)
: HyperTextAccessibleWrap(nullptr, nullptr) {
mType = eProxyType;
mBits.proxy = aProxy;
}
virtual void Shutdown() override {
mBits.proxy = nullptr;
mStateFlags |= eIsDefunct;
}
virtual void GetNativeInterface(void** aOutAccessible) override {
mBits.proxy->GetCOMInterface(aOutAccessible);
}
};
class DocProxyAccessibleWrap : public HyperTextProxyAccessibleWrap {
public:
explicit DocProxyAccessibleWrap(ProxyAccessible* aProxy)
: HyperTextProxyAccessibleWrap(aProxy) {
mGenericTypes |= eDocument;
}
void AddID(uint32_t aID, AccessibleWrap* aAcc) {
mIDToAccessibleMap.Put(aID, aAcc);
}
void RemoveID(uint32_t aID) { mIDToAccessibleMap.Remove(aID); }
AccessibleWrap* GetAccessibleByID(uint32_t aID) const {
return mIDToAccessibleMap.Get(aID);
}
private:
/*
* This provides a mapping from 32 bit id to accessible objects.
*/
nsDataHashtable<nsUint32HashKey, AccessibleWrap*> mIDToAccessibleMap;
};
template <typename T>
inline ProxyAccessible* HyperTextProxyFor(T* aWrapper) {
static_assert(mozilla::IsBaseOf<IUnknown, T>::value,
"only IAccessible* should be passed in");
auto wrapper = static_cast<HyperTextProxyAccessibleWrap*>(aWrapper);
return wrapper->IsProxy() ? wrapper->Proxy() : nullptr;
}
} // namespace a11y
} // namespace mozilla
#endif