/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* 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 WEBGL_VERTEX_ARRAY_H_

#define WEBGL_VERTEX_ARRAY_H_

#include "nsTArray.h"

#include "mozilla/LinkedList.h"

#include "nsWrapperCache.h"

#include "CacheMap.h"

#include "WebGLObjectModel.h"

#include "WebGLStrongTypes.h"

#include "WebGLVertexAttribData.h"

namespace mozilla {

class WebGLVertexArrayFake;

namespace webgl {

struct LinkedProgramInfo;

}

class WebGLVertexArray

    : public nsWrapperCache

    , public WebGLRefCountedObject<WebGLVertexArray>

    , public LinkedListElement<WebGLVertexArray>

    , public CacheMapInvalidator

{

public:

    static WebGLVertexArray* Create(WebGLContext* webgl);

    void BindVertexArray() {

        // Bind to dummy value to signal that this vertex array has ever been

        // bound.

        BindVertexArrayImpl();

    };

    // Implement parent classes:

    void Delete();

    bool IsVertexArray() const;

    WebGLContext* GetParentObject() const {

        return mContext;

    }

    virtual JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto) override;

    NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLVertexArray)

    NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLVertexArray)

    GLuint GLName() const { return mGLName; }

    void AddBufferBindCounts(int8_t addVal) const;

protected:

    explicit WebGLVertexArray(WebGLContext* webgl);

    virtual ~WebGLVertexArray();

    virtual void GenVertexArray() = 0;

    virtual void BindVertexArrayImpl() = 0;

    virtual void DeleteImpl() = 0;

    virtual bool IsVertexArrayImpl() const = 0;

    GLuint mGLName;

    nsTArray<WebGLVertexAttribData> mAttribs;

    WebGLRefPtr<WebGLBuffer> mElementArrayBuffer;

    friend class ScopedDrawHelper;

    friend class WebGLContext;

    friend class WebGLVertexArrayFake;

    friend class WebGL2Context;

    friend struct webgl::LinkedProgramInfo;

};

} // namespace mozilla

#endif // WEBGL_VERTEX_ARRAY_H_