/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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_ServoBindings_h
#define mozilla_ServoBindings_h

#include <stdint.h>

/*
 * API for Servo to access Gecko data structures. This file must compile as valid
 * C code in order for the binding generator to parse it.
 *
 * Functions beginning with Gecko_ are implemented in Gecko and invoked from Servo.
 * Functions beginning with Servo_ are implemented in Servo and invoked from Gecko.
 */

#ifdef __cplusplus
class nsINode;
typedef nsINode RawGeckoNode;
namespace mozilla { namespace dom { class Element; } }
using mozilla::dom::Element;
typedef mozilla::dom::Element RawGeckoElement;
class nsIDocument;
typedef nsIDocument RawGeckoDocument;
struct ServoNodeData;
struct RawServoStyleSheet;
#else
struct RawGeckoNode;
typedef struct RawGeckoNode RawGeckoNode;
struct RawGeckoElement;
typedef struct RawGeckoElement RawGeckoElement;
struct RawGeckoDocument;
typedef struct RawGeckoDocument RawGeckoDocument;
struct ServoNodeData;
typedef struct ServoNodeData ServoNodeData;
struct RawServoStyleSheet;
typedef struct RawServoStyleSheet RawServoStyleSheet;
#endif

#ifdef __cplusplus
extern "C" {
#endif

// DOM Traversal.
uint32_t Gecko_ChildrenCount(RawGeckoNode* node);
int Gecko_NodeIsElement(RawGeckoNode* node);
RawGeckoNode* Gecko_GetParentNode(RawGeckoNode* node);
RawGeckoNode* Gecko_GetFirstChild(RawGeckoNode* node);
RawGeckoNode* Gecko_GetLastChild(RawGeckoNode* node);
RawGeckoNode* Gecko_GetPrevSibling(RawGeckoNode* node);
RawGeckoNode* Gecko_GetNextSibling(RawGeckoNode* node);
RawGeckoElement* Gecko_GetParentElement(RawGeckoElement* element);
RawGeckoElement* Gecko_GetFirstChildElement(RawGeckoElement* element);
RawGeckoElement* Gecko_GetLastChildElement(RawGeckoElement* element);
RawGeckoElement* Gecko_GetPrevSiblingElement(RawGeckoElement* element);
RawGeckoElement* Gecko_GetNextSiblingElement(RawGeckoElement* element);
RawGeckoElement* Gecko_GetDocumentElement(RawGeckoDocument* document);

// Selector Matching.
uint8_t Gecko_ElementState(RawGeckoElement* element);
int Gecko_IsHTMLElementInHTMLDocument(RawGeckoElement* element);
int Gecko_IsLink(RawGeckoElement* element);
int Gecko_IsTextNode(RawGeckoNode* node);
int Gecko_IsVisitedLink(RawGeckoElement* element);
int Gecko_IsUnvisitedLink(RawGeckoElement* element);
int Gecko_IsRootElement(RawGeckoElement* element);

// Node data.
ServoNodeData* Gecko_GetNodeData(RawGeckoNode* node);
void Gecko_SetNodeData(RawGeckoNode* node, ServoNodeData* data);
void Servo_DropNodeData(ServoNodeData* data);

// Stylesheet management.
// XXXheycam: Make this return an already_AddRefed<RawServoStyleSheet>.
RawServoStyleSheet* Servo_StylesheetFromUTF8Bytes(const uint8_t* bytes, uint32_t length);
void Servo_ReleaseStylesheet(RawServoStyleSheet* sheet);

// Servo API.
void Servo_RestyleDocument(RawGeckoDocument* aDoc);

#ifdef __cplusplus
} // extern "C"
#endif

#endif // mozilla_ServoBindings_h