gfx/gl/GLLibraryLoader.h
author Tyler Maklebust <maklebus@msu.edu>
Mon, 19 Dec 2016 21:10:54 -0500
changeset 325625 550922e8b2234ceb7bd8eb1e738c14ff8bff56ee
parent 305366 3c35da4f57e67fb3571885b6ba5442009bf5f00d
permissions -rw-r--r--
Bug 1309935 - Add ability to find within select dropdown when over 40 elements. r?jaws, mconley, enndeakin Search implemented for select dropdown options. List navigation takes keyboard input as before, until search field is focused. Pref added to enable search (dom.forms.selectSearch). Task added to test search functionality. MozReview-Commit-ID: BiKRvNbQnxx

/* 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 GLLIBRARYLOADER_H_
#define GLLIBRARYLOADER_H_

#include <stdio.h>

#include "GLDefs.h"
#include "nscore.h"
#include "prlink.h"

namespace mozilla {
namespace gl {

class GLLibraryLoader
{
public:
    bool OpenLibrary(const char* library);

    typedef PRFuncPtr (GLAPIENTRY * PlatformLookupFunction) (const char*);

    enum {
        MAX_SYMBOL_NAMES = 6,
        MAX_SYMBOL_LENGTH = 128
    };

    typedef struct {
        PRFuncPtr* symPointer;
        const char* symNames[MAX_SYMBOL_NAMES];
    } SymLoadStruct;

    bool LoadSymbols(const SymLoadStruct* firstStruct,
                     bool tryplatform = false,
                     const char* prefix = nullptr,
                     bool warnOnFailure = true);

    /*
     * Static version of the functions in this class
     */
    static PRFuncPtr LookupSymbol(PRLibrary* lib,
                                  const char* symname,
                                  PlatformLookupFunction lookupFunction = nullptr);
    static bool LoadSymbols(PRLibrary* lib,
                            const SymLoadStruct* firstStruct,
                            PlatformLookupFunction lookupFunction = nullptr,
                            const char* prefix = nullptr,
                            bool warnOnFailure = true);
protected:
    GLLibraryLoader() {
        mLibrary = nullptr;
        mLookupFunc = nullptr;
    }

    PRLibrary* mLibrary;
    PlatformLookupFunction mLookupFunc;
};

} /* namespace gl */
} /* namespace mozilla */

#endif /* GLLIBRARYLOADER_H_ */