зеркало из https://github.com/mozilla/gecko-dev.git
154 строки
4.3 KiB
C++
154 строки
4.3 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_ProxyAccessibleWrap_h
|
|
#define MOZILLA_A11Y_ProxyAccessibleWrap_h
|
|
|
|
#include "AccessibleWrap.h"
|
|
#include "DocAccessibleParent.h"
|
|
|
|
namespace mozilla {
|
|
namespace a11y {
|
|
|
|
/**
|
|
* A wrapper for Accessible proxies. The public methods here should be overriden
|
|
* from AccessibleWrap or its super classes.
|
|
* This gives us an abstraction layer so SessionAccessibility doesn't have
|
|
* to distinguish between a local or remote accessibles.
|
|
* NOTE: This shouldn't be regarded as a full Accessible implementation.
|
|
*/
|
|
class ProxyAccessibleWrap : public AccessibleWrap {
|
|
public:
|
|
explicit ProxyAccessibleWrap(ProxyAccessible* aProxy);
|
|
|
|
virtual void Shutdown() override;
|
|
|
|
// Accessible
|
|
|
|
virtual already_AddRefed<nsIPersistentProperties> Attributes() override;
|
|
|
|
virtual uint32_t ChildCount() const override;
|
|
|
|
virtual Accessible* GetChildAt(uint32_t aIndex) const override;
|
|
|
|
virtual ENameValueFlag Name(nsString& aName) const override;
|
|
|
|
virtual void Value(nsString& aValue) const override;
|
|
|
|
virtual uint64_t State() override;
|
|
|
|
virtual nsIntRect Bounds() const override;
|
|
|
|
MOZ_CAN_RUN_SCRIPT
|
|
virtual void ScrollTo(uint32_t aHow) const override;
|
|
|
|
virtual uint8_t ActionCount() const override;
|
|
|
|
virtual bool DoAction(uint8_t aIndex) const override;
|
|
|
|
// AccessibleWrap
|
|
|
|
virtual void SetTextContents(const nsAString& aText) override;
|
|
|
|
virtual void GetTextContents(nsAString& aText) override;
|
|
|
|
virtual bool GetSelectionBounds(int32_t* aStartOffset,
|
|
int32_t* aEndOffset) override;
|
|
|
|
virtual void Pivot(int32_t aGranularity, bool aForward,
|
|
bool aInclusive) override;
|
|
|
|
virtual void NavigateText(int32_t aGranularity, int32_t aStartOffset,
|
|
int32_t aEndOffset, bool aForward,
|
|
bool aSelect) override;
|
|
|
|
virtual void SetSelection(int32_t aStart, int32_t aEnd) override;
|
|
|
|
virtual void Cut() override;
|
|
|
|
virtual void Copy() override;
|
|
|
|
virtual void Paste() override;
|
|
|
|
virtual void ExploreByTouch(float aX, float aY) override;
|
|
|
|
virtual void WrapperDOMNodeID(nsString& aDOMNodeID) override;
|
|
|
|
private:
|
|
virtual role WrapperRole() override;
|
|
|
|
virtual AccessibleWrap* WrapperParent() override;
|
|
|
|
virtual bool WrapperRangeInfo(double* aCurVal, double* aMinVal,
|
|
double* aMaxVal, double* aStep) override;
|
|
};
|
|
|
|
class DocProxyAccessibleWrap : public ProxyAccessibleWrap {
|
|
public:
|
|
explicit DocProxyAccessibleWrap(DocAccessibleParent* aProxy)
|
|
: ProxyAccessibleWrap(aProxy) {
|
|
mGenericTypes |= eDocument;
|
|
|
|
if (aProxy->IsTopLevel()) {
|
|
mID = kNoID;
|
|
} else {
|
|
mID = AcquireID();
|
|
}
|
|
}
|
|
|
|
virtual void Shutdown() override {
|
|
if (mID) {
|
|
auto doc = static_cast<DocAccessibleParent*>(Proxy());
|
|
if (!doc->IsTopLevel()) {
|
|
MOZ_ASSERT(mID != kNoID, "A non root accessible must have an id");
|
|
ReleaseID(mID);
|
|
}
|
|
}
|
|
mID = 0;
|
|
mBits.proxy = nullptr;
|
|
mStateFlags |= eIsDefunct;
|
|
}
|
|
|
|
DocProxyAccessibleWrap* ParentDocument() {
|
|
DocAccessibleParent* proxy = static_cast<DocAccessibleParent*>(Proxy());
|
|
MOZ_ASSERT(proxy);
|
|
if (DocAccessibleParent* parent = proxy->ParentDoc()) {
|
|
return reinterpret_cast<DocProxyAccessibleWrap*>(parent->GetWrapper());
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
DocProxyAccessibleWrap* GetChildDocumentAt(uint32_t aIndex) {
|
|
auto doc = Proxy()->AsDoc();
|
|
if (doc && doc->ChildDocCount() > aIndex) {
|
|
return reinterpret_cast<DocProxyAccessibleWrap*>(
|
|
doc->ChildDocAt(aIndex)->GetWrapper());
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
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;
|
|
};
|
|
} // namespace a11y
|
|
} // namespace mozilla
|
|
|
|
#endif
|