webkit/common/resource_type.h

   1 // Copyright (c) 2012 The Chromium Authors. 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 WEBKIT_COMMON_RESOURCE_TYPE_H__
   6 #define WEBKIT_COMMON_RESOURCE_TYPE_H__
   7
   8 #include "base/basictypes.h"
   9 #include "third_party/WebKit/public/platform/WebURLRequest.h"
  10 #include "webkit/common/webkit_common_export.h"
  11
  12 class ResourceType {
  13  public:
  14   // Used in histograms, so please add new types at the end, and rename unused
  15   // entries to RESOURCETYPE_UNUSED_0, etc...
  16   enum Type {
  17     MAIN_FRAME = 0,  // top level page
  18     SUB_FRAME,       // frame or iframe
  19     STYLESHEET,      // a CSS stylesheet
  20     SCRIPT,          // an external script
  21     IMAGE,           // an image (jpg/gif/png/etc)
  22     FONT_RESOURCE,   // a font
  23     SUB_RESOURCE,    // an "other" subresource.
  24     OBJECT,          // an object (or embed) tag for a plugin,
  25                      // or a resource that a plugin requested.
  26     MEDIA,           // a media resource.
  27     WORKER,          // the main resource of a dedicated worker.
  28     SHARED_WORKER,   // the main resource of a shared worker.
  29     PREFETCH,        // an explicitly requested prefetch
  30     FAVICON,         // a favicon
  31     XHR,             // a XMLHttpRequest
  32     LAST_TYPE        // Place holder so we don't need to change ValidType
  33                      // everytime.
  34   };
  35
  36   static bool ValidType(int32 type) {
  37     return type >= MAIN_FRAME && type < LAST_TYPE;
  38   }
  39
  40   static Type FromInt(int32 type) {
  41     return static_cast<Type>(type);
  42   }
  43
  44   WEBKIT_COMMON_EXPORT static Type FromTargetType(
  45       WebKit::WebURLRequest::TargetType type);
  46
  47   static bool IsFrame(ResourceType::Type type) {
  48     return type == MAIN_FRAME || type == SUB_FRAME;
  49   }
  50
  51   static bool IsSharedWorker(ResourceType::Type type) {
  52     return type == SHARED_WORKER;
  53   }
  54
  55   static bool IsSubresource(ResourceType::Type type) {
  56     return type == STYLESHEET ||
  57            type == SCRIPT ||
  58            type == IMAGE ||
  59            type == FONT_RESOURCE ||
  60            type == SUB_RESOURCE ||
  61            type == WORKER ||
  62            type == XHR;
  63   }
  64
  65  private:
  66   // Don't instantiate this class.
  67   ResourceType();
  68   ~ResourceType();
  69 };
  70 #endif  // WEBKIT_COMMON_RESOURCE_TYPE_H__