/* -*- 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_UNIFORM_LOCATION_H_

#define WEBGL_UNIFORM_LOCATION_H_

#include "GLDefs.h"

#include "mozilla/WeakPtr.h"

#include "nsCycleCollectionParticipant.h" // NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS

#include "nsISupportsImpl.h" // NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING

#include "nsWrapperCache.h"

#include "WebGLObjectModel.h"

struct JSContext;

namespace mozilla {

class WebGLActiveInfo;

class WebGLContext;

class WebGLProgram;

namespace webgl {

struct LinkedProgramInfo;

struct UniformInfo;

} // namespace webgl

class WebGLUniformLocation final

    : public nsWrapperCache

    , public WebGLContextBoundObject

{

public:

    NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLUniformLocation)

    NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLUniformLocation)

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

    WebGLContext* GetParentObject() const {

        return mContext;

    }

    //////

    const WeakPtr<const webgl::LinkedProgramInfo> mLinkInfo;

    webgl::UniformInfo* const mInfo;

    const GLuint mLoc;

    const size_t mArrayIndex;

    //////

    WebGLUniformLocation(WebGLContext* webgl, const webgl::LinkedProgramInfo* linkInfo,

                         webgl::UniformInfo* info, GLuint loc, size_t arrayIndex);

    bool ValidateForProgram(const WebGLProgram* prog) const;

    bool ValidateSizeAndType(uint8_t setterElemSize, GLenum setterType) const;

    bool ValidateArrayLength(uint8_t setterElemSize, size_t setterArraySize) const;

    JS::Value GetUniform(JSContext* js) const;

    // Needed for certain helper functions like ValidateObject.

    // `WebGLUniformLocation`s can't be 'Deleted' in the WebGL sense.

    bool IsDeleted() const { return false; }

protected:

    ~WebGLUniformLocation();

};

} // namespace mozilla

#endif // WEBGL_UNIFORM_LOCATION_H_