gecko-dev/accessible/atk/nsMaiInterfaceDocument.cpp

118 строки
3.6 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/. */
#include "InterfaceInitFuncs.h"
#include "Accessible-inl.h"
#include "AccessibleWrap.h"
#include "DocAccessible.h"
#include "nsMai.h"
#include "mozilla/Likely.h"
using namespace mozilla::a11y;
static const char* const kDocTypeName = "W3C-doctype";
static const char* const kDocUrlName = "DocURL";
static const char* const kMimeTypeName = "MimeType";
// below functions are vfuncs on an ATK interface so they need to be C call
extern "C" {
static const gchar* getDocumentLocaleCB(AtkDocument* aDocument);
static AtkAttributeSet* getDocumentAttributesCB(AtkDocument* aDocument);
static const gchar* getDocumentAttributeValueCB(AtkDocument* aDocument,
const gchar* aAttrName);
void
documentInterfaceInitCB(AtkDocumentIface *aIface)
{
NS_ASSERTION(aIface, "Invalid Interface");
if(MOZ_UNLIKELY(!aIface))
return;
/*
* We don't support get_document or set_attribute right now.
* get_document_type is deprecated, we return DocType in
* get_document_attribute_value and get_document_attributes instead.
*/
aIface->get_document_attributes = getDocumentAttributesCB;
aIface->get_document_attribute_value = getDocumentAttributeValueCB;
aIface->get_document_locale = getDocumentLocaleCB;
}
const gchar *
getDocumentLocaleCB(AtkDocument *aDocument)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument));
if (!accWrap)
return nullptr;
nsAutoString locale;
accWrap->Language(locale);
return locale.IsEmpty() ? nullptr : AccessibleWrap::ReturnString(locale);
}
static inline GSList *
prependToList(GSList *aList, const char *const aName, const nsAutoString &aValue)
{
if (aValue.IsEmpty())
return aList;
// libspi will free these
AtkAttribute *atkAttr = (AtkAttribute *)g_malloc(sizeof(AtkAttribute));
atkAttr->name = g_strdup(aName);
atkAttr->value = g_strdup(NS_ConvertUTF16toUTF8(aValue).get());
return g_slist_prepend(aList, atkAttr);
}
AtkAttributeSet *
getDocumentAttributesCB(AtkDocument *aDocument)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument));
if (!accWrap || !accWrap->IsDoc())
return nullptr;
// according to atkobject.h, AtkAttributeSet is a GSList
GSList* attributes = nullptr;
DocAccessible* document = accWrap->AsDoc();
nsAutoString aURL;
document->URL(aURL);
attributes = prependToList(attributes, kDocUrlName, aURL);
nsAutoString aW3CDocType;
document->DocType(aW3CDocType);
attributes = prependToList(attributes, kDocTypeName, aW3CDocType);
nsAutoString aMimeType;
document->MimeType(aMimeType);
attributes = prependToList(attributes, kMimeTypeName, aMimeType);
return attributes;
}
const gchar *
getDocumentAttributeValueCB(AtkDocument *aDocument,
const gchar *aAttrName)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument));
if (!accWrap || !accWrap->IsDoc())
return nullptr;
DocAccessible* document = accWrap->AsDoc();
nsAutoString attrValue;
if (!strcasecmp(aAttrName, kDocTypeName))
document->DocType(attrValue);
else if (!strcasecmp(aAttrName, kDocUrlName))
document->URL(attrValue);
else if (!strcasecmp(aAttrName, kMimeTypeName))
document->MimeType(attrValue);
else
return nullptr;
return attrValue.IsEmpty() ? nullptr : AccessibleWrap::ReturnString(attrValue);
}
}