src/xwalk/runtime/common/xwalk_runtime_features.h

   1 // Copyright (c) 2013 Intel Corporation. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef XWALK_RUNTIME_COMMON_XWALK_RUNTIME_FEATURES_H_
   6 #define XWALK_RUNTIME_COMMON_XWALK_RUNTIME_FEATURES_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/command_line.h"
  12 #include "base/memory/singleton.h"
  13
  14 namespace xwalk {
  15
  16 #define DECLARE_RUNTIME_FEATURE(NAME) static bool is ##NAME## Enabled() \
  17   { return GetInstance()->isFeatureEnabled( #NAME ); }
  18
  19 class XWalkRuntimeFeatures {
  20  public:
  21   // Declare new features here and and define them in xwalk_runtime_features.cc.
  22   DECLARE_RUNTIME_FEATURE(SysApps);
  23   DECLARE_RUNTIME_FEATURE(RawSocketsAPI);
  24   DECLARE_RUNTIME_FEATURE(DeviceCapabilitiesAPI);
  25   DECLARE_RUNTIME_FEATURE(StorageAPI);
  26   DECLARE_RUNTIME_FEATURE(DialogAPI);
  27
  28   void Initialize(const CommandLine* cmd);
  29   void DumpFeaturesFlags();
  30   static XWalkRuntimeFeatures* GetInstance();
  31
  32   enum RuntimeFeatureStatus {
  33     Stable,
  34     Experimental
  35   };
  36
  37
  38   struct RuntimeFeature {
  39     std::string name;
  40     std::string description;
  41     std::string command_line_switch;
  42     RuntimeFeatureStatus status;
  43     bool enabled;
  44     RuntimeFeature() = default;
  45   };
  46
  47  private:
  48   friend struct DefaultSingletonTraits<XWalkRuntimeFeatures>;
  49   XWalkRuntimeFeatures();
  50   ~XWalkRuntimeFeatures();
  51   void AddFeature(const char* name, const char* command_line_switch,
  52                   const char* description, RuntimeFeatureStatus status);
  53   bool isFeatureEnabled(const char* name) const;
  54   typedef std::vector<RuntimeFeature> RuntimeFeaturesList;
  55   RuntimeFeaturesList runtime_features_;
  56   const CommandLine* command_line_;
  57   bool initialized_;
  58   bool experimental_features_enabled_;
  59 };
  60
  61 }  // namespace xwalk
  62
  63 #endif  // XWALK_RUNTIME_COMMON_XWALK_RUNTIME_FEATURES_H_