зеркало из https://github.com/mozilla/gecko-dev.git
245 строки
11 KiB
C++
245 строки
11 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_ServoBindings_h
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#define mozilla_ServoBindings_h
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#include "stdint.h"
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#include "nsColor.h"
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#include "mozilla/css/SheetParsingMode.h"
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#include "nsProxyRelease.h"
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/*
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* API for Servo to access Gecko data structures. This file must compile as valid
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* C code in order for the binding generator to parse it.
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*
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* Functions beginning with Gecko_ are implemented in Gecko and invoked from Servo.
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* Functions beginning with Servo_ are implemented in Servo and invoked from Gecko.
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*/
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class nsIAtom;
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class nsINode;
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typedef nsINode RawGeckoNode;
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class nsIPrincipal;
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class nsIURI;
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struct nsFont;
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namespace mozilla {
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class FontFamilyList;
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enum FontFamilyType : uint32_t;
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namespace dom { class Element; }
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}
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using mozilla::FontFamilyList;
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using mozilla::FontFamilyType;
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using mozilla::dom::Element;
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typedef mozilla::dom::Element RawGeckoElement;
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class nsIDocument;
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typedef nsIDocument RawGeckoDocument;
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struct ServoNodeData;
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struct ServoComputedValues;
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struct RawServoStyleSheet;
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struct RawServoStyleSet;
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class nsHTMLCSSStyleSheet;
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struct nsStyleList;
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struct nsStyleImage;
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struct nsStyleGradientStop;
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class nsStyleGradient;
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class nsStyleCoord;
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struct nsStyleDisplay;
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struct ServoDeclarationBlock;
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#define NS_DECL_THREADSAFE_FFI_REFCOUNTING(class_, name_) \
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void Gecko_AddRef##name_##ArbitraryThread(class_* aPtr); \
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void Gecko_Release##name_##ArbitraryThread(class_* aPtr);
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#define NS_IMPL_THREADSAFE_FFI_REFCOUNTING(class_, name_) \
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static_assert(class_::HasThreadSafeRefCnt::value, \
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"NS_DECL_THREADSAFE_FFI_REFCOUNTING can only be used with " \
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"classes that have thread-safe refcounting"); \
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void Gecko_AddRef##name_##ArbitraryThread(class_* aPtr) \
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{ NS_ADDREF(aPtr); } \
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void Gecko_Release##name_##ArbitraryThread(class_* aPtr) \
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{ NS_RELEASE(aPtr); }
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#define NS_DECL_HOLDER_FFI_REFCOUNTING(class_, name_) \
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typedef nsMainThreadPtrHolder<class_> ThreadSafe##name_##Holder; \
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void Gecko_AddRef##name_##ArbitraryThread(ThreadSafe##name_##Holder* aPtr); \
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void Gecko_Release##name_##ArbitraryThread(ThreadSafe##name_##Holder* aPtr);
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#define NS_IMPL_HOLDER_FFI_REFCOUNTING(class_, name_) \
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void Gecko_AddRef##name_##ArbitraryThread(ThreadSafe##name_##Holder* aPtr) \
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{ NS_ADDREF(aPtr); } \
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void Gecko_Release##name_##ArbitraryThread(ThreadSafe##name_##Holder* aPtr) \
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{ NS_RELEASE(aPtr); } \
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extern "C" {
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// DOM Traversal.
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uint32_t Gecko_ChildrenCount(RawGeckoNode* node);
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bool Gecko_NodeIsElement(RawGeckoNode* node);
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RawGeckoNode* Gecko_GetParentNode(RawGeckoNode* node);
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RawGeckoNode* Gecko_GetFirstChild(RawGeckoNode* node);
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RawGeckoNode* Gecko_GetLastChild(RawGeckoNode* node);
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RawGeckoNode* Gecko_GetPrevSibling(RawGeckoNode* node);
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RawGeckoNode* Gecko_GetNextSibling(RawGeckoNode* node);
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RawGeckoElement* Gecko_GetParentElement(RawGeckoElement* element);
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RawGeckoElement* Gecko_GetFirstChildElement(RawGeckoElement* element);
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RawGeckoElement* Gecko_GetLastChildElement(RawGeckoElement* element);
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RawGeckoElement* Gecko_GetPrevSiblingElement(RawGeckoElement* element);
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RawGeckoElement* Gecko_GetNextSiblingElement(RawGeckoElement* element);
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RawGeckoElement* Gecko_GetDocumentElement(RawGeckoDocument* document);
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// Selector Matching.
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uint8_t Gecko_ElementState(RawGeckoElement* element);
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bool Gecko_IsHTMLElementInHTMLDocument(RawGeckoElement* element);
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bool Gecko_IsLink(RawGeckoElement* element);
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bool Gecko_IsTextNode(RawGeckoNode* node);
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bool Gecko_IsVisitedLink(RawGeckoElement* element);
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bool Gecko_IsUnvisitedLink(RawGeckoElement* element);
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bool Gecko_IsRootElement(RawGeckoElement* element);
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nsIAtom* Gecko_LocalName(RawGeckoElement* element);
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nsIAtom* Gecko_Namespace(RawGeckoElement* element);
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nsIAtom* Gecko_GetElementId(RawGeckoElement* element);
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// Attributes.
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bool Gecko_HasAttr(RawGeckoElement* element, nsIAtom* ns, nsIAtom* name);
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bool Gecko_AttrEquals(RawGeckoElement* element, nsIAtom* ns, nsIAtom* name, nsIAtom* str, bool ignoreCase);
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bool Gecko_AttrDashEquals(RawGeckoElement* element, nsIAtom* ns, nsIAtom* name, nsIAtom* str);
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bool Gecko_AttrIncludes(RawGeckoElement* element, nsIAtom* ns, nsIAtom* name, nsIAtom* str);
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bool Gecko_AttrHasSubstring(RawGeckoElement* element, nsIAtom* ns, nsIAtom* name, nsIAtom* str);
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bool Gecko_AttrHasPrefix(RawGeckoElement* element, nsIAtom* ns, nsIAtom* name, nsIAtom* str);
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bool Gecko_AttrHasSuffix(RawGeckoElement* element, nsIAtom* ns, nsIAtom* name, nsIAtom* str);
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// Gets the class or class list (if any) of the Element.
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//
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// The calling convention here is rather hairy, and is optimized for getting
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// Servo the information it needs for hot calls.
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//
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// The return value indicates the number of classes. If zero, neither outparam
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// is valid. If one, the class_ outparam is filled with the atom of the class.
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// If two or more, the classList outparam is set to point to an array of atoms
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// representing the class list.
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//
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// The array is borrowed and the atoms are not addrefed. These values can be
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// invalidated by any DOM mutation. Use them in a tight scope.
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uint32_t Gecko_ClassOrClassList(RawGeckoElement* element,
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nsIAtom** class_, nsIAtom*** classList);
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// Style attributes.
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ServoDeclarationBlock* Gecko_GetServoDeclarationBlock(RawGeckoElement* element);
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// Node data.
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ServoNodeData* Gecko_GetNodeData(RawGeckoNode* node);
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void Gecko_SetNodeData(RawGeckoNode* node, ServoNodeData* data);
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void Servo_DropNodeData(ServoNodeData* data);
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// Atoms.
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nsIAtom* Gecko_Atomize(const char* aString, uint32_t aLength);
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void Gecko_AddRefAtom(nsIAtom* aAtom);
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void Gecko_ReleaseAtom(nsIAtom* aAtom);
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const uint16_t* Gecko_GetAtomAsUTF16(nsIAtom* aAtom, uint32_t* aLength);
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bool Gecko_AtomEqualsUTF8(nsIAtom* aAtom, const char* aString, uint32_t aLength);
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bool Gecko_AtomEqualsUTF8IgnoreCase(nsIAtom* aAtom, const char* aString, uint32_t aLength);
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// Font style
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void Gecko_FontFamilyList_Clear(FontFamilyList* aList);
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void Gecko_FontFamilyList_AppendNamed(FontFamilyList* aList, nsIAtom* aName);
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void Gecko_FontFamilyList_AppendGeneric(FontFamilyList* list, FontFamilyType familyType);
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void Gecko_CopyFontFamilyFrom(nsFont* dst, const nsFont* src);
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// Counter style.
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void Gecko_SetListStyleType(nsStyleList* style_struct, uint32_t type);
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void Gecko_CopyListStyleTypeFrom(nsStyleList* dst, const nsStyleList* src);
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// background-image style.
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// TODO: support url() values (and maybe element() too?).
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void Gecko_SetNullImageValue(nsStyleImage* image);
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void Gecko_SetGradientImageValue(nsStyleImage* image, nsStyleGradient* gradient);
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void Gecko_CopyImageValueFrom(nsStyleImage* image, const nsStyleImage* other);
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nsStyleGradient* Gecko_CreateGradient(uint8_t shape,
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uint8_t size,
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bool repeating,
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bool legacy_syntax,
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uint32_t stops);
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// Object refcounting.
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NS_DECL_HOLDER_FFI_REFCOUNTING(nsIPrincipal, Principal)
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NS_DECL_HOLDER_FFI_REFCOUNTING(nsIURI, URI)
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// Display style.
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void Gecko_SetMozBinding(nsStyleDisplay* style_struct,
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const uint8_t* string_bytes, uint32_t string_length,
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ThreadSafeURIHolder* base_uri,
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ThreadSafeURIHolder* referrer,
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ThreadSafePrincipalHolder* principal);
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void Gecko_CopyMozBindingFrom(nsStyleDisplay* des, const nsStyleDisplay* src);
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// Styleset and Stylesheet management.
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//
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// TODO: Make these return already_AddRefed and UniquePtr when the binding
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// generator is smart enough to handle them.
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RawServoStyleSheet* Servo_StylesheetFromUTF8Bytes(
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const uint8_t* bytes, uint32_t length,
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mozilla::css::SheetParsingMode parsing_mode,
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ThreadSafeURIHolder* base,
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ThreadSafeURIHolder* referrer,
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ThreadSafePrincipalHolder* principal);
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void Servo_AddRefStyleSheet(RawServoStyleSheet* sheet);
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void Servo_ReleaseStyleSheet(RawServoStyleSheet* sheet);
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void Servo_AppendStyleSheet(RawServoStyleSheet* sheet, RawServoStyleSet* set);
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void Servo_PrependStyleSheet(RawServoStyleSheet* sheet, RawServoStyleSet* set);
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void Servo_RemoveStyleSheet(RawServoStyleSheet* sheet, RawServoStyleSet* set);
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void Servo_InsertStyleSheetBefore(RawServoStyleSheet* sheet,
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RawServoStyleSheet* reference,
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RawServoStyleSet* set);
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bool Servo_StyleSheetHasRules(RawServoStyleSheet* sheet);
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RawServoStyleSet* Servo_InitStyleSet();
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void Servo_DropStyleSet(RawServoStyleSet* set);
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// Style attributes.
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ServoDeclarationBlock* Servo_ParseStyleAttribute(const uint8_t* bytes,
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uint8_t length,
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nsHTMLCSSStyleSheet* cache);
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void Servo_DropDeclarationBlock(ServoDeclarationBlock* declarations);
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nsHTMLCSSStyleSheet* Servo_GetDeclarationBlockCache(
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ServoDeclarationBlock* declarations);
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void Servo_SetDeclarationBlockImmutable(ServoDeclarationBlock* declarations);
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void Servo_ClearDeclarationBlockCachePointer(ServoDeclarationBlock* declarations);
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// Computed style data.
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ServoComputedValues* Servo_GetComputedValues(RawGeckoNode* node);
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ServoComputedValues* Servo_GetComputedValuesForAnonymousBox(ServoComputedValues* parentStyleOrNull,
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nsIAtom* pseudoTag,
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RawServoStyleSet* set);
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ServoComputedValues* Servo_GetComputedValuesForPseudoElement(ServoComputedValues* parent_style,
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RawGeckoElement* match_element,
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nsIAtom* pseudo_tag,
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RawServoStyleSet* set,
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bool is_probe);
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ServoComputedValues* Servo_InheritComputedValues(ServoComputedValues* parent_style);
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void Servo_AddRefComputedValues(ServoComputedValues*);
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void Servo_ReleaseComputedValues(ServoComputedValues*);
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// Initialize Servo components. Should be called exactly once at startup.
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void Servo_Initialize();
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// Restyle the given document or subtree.
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void Servo_RestyleDocument(RawGeckoDocument* doc, RawServoStyleSet* set);
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void Servo_RestyleSubtree(RawGeckoNode* node, RawServoStyleSet* set);
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// Style-struct management.
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#define STYLE_STRUCT(name, checkdata_cb) \
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struct nsStyle##name; \
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void Gecko_Construct_nsStyle##name(nsStyle##name* ptr); \
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void Gecko_CopyConstruct_nsStyle##name(nsStyle##name* ptr, const nsStyle##name* other); \
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void Gecko_Destroy_nsStyle##name(nsStyle##name* ptr); \
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const nsStyle##name* Servo_GetStyle##name(ServoComputedValues* computedValues);
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT
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} // extern "C"
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#endif // mozilla_ServoBindings_h
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