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      1 // Copyright 2014 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 Headers_h
      6 #define Headers_h
      7 
      8 #include "bindings/core/v8/ScriptWrappable.h"
      9 #include "modules/serviceworkers/FetchHeaderList.h"
     10 #include "wtf/Forward.h"
     11 #include "wtf/PassOwnPtr.h"
     12 
     13 namespace blink {
     14 
     15 class Dictionary;
     16 class ExceptionState;
     17 class HeadersForEachCallback;
     18 class ScriptValue;
     19 
     20 // http://fetch.spec.whatwg.org/#headers-class
     21 class Headers FINAL : public GarbageCollected<Headers>, public ScriptWrappable {
     22     DEFINE_WRAPPERTYPEINFO();
     23 public:
     24     enum Guard { ImmutableGuard, RequestGuard, RequestNoCORSGuard, ResponseGuard, NoneGuard };
     25 
     26     static Headers* create();
     27     static Headers* create(ExceptionState&);
     28     static Headers* create(const Headers*, ExceptionState&);
     29     static Headers* create(const Dictionary&, ExceptionState&);
     30 
     31     // Shares the FetchHeaderList. Called when creating a Request or Response.
     32     static Headers* create(FetchHeaderList*);
     33 
     34     Headers* createCopy() const;
     35 
     36     // Headers.idl implementation.
     37     void append(const String& name, const String& value, ExceptionState&);
     38     void remove(const String& key, ExceptionState&);
     39     String get(const String& key, ExceptionState&);
     40     Vector<String> getAll(const String& key, ExceptionState&);
     41     bool has(const String& key, ExceptionState&);
     42     void set(const String& key, const String& value, ExceptionState&);
     43     unsigned long size() const;
     44     void forEach(HeadersForEachCallback*, const ScriptValue&);
     45     void forEach(HeadersForEachCallback*);
     46 
     47     void setGuard(Guard guard) { m_guard = guard; }
     48     Guard guard() const { return m_guard; }
     49 
     50     // These methods should only be called when size() would return 0.
     51     void fillWith(const Headers*, ExceptionState&);
     52     void fillWith(const Dictionary&, ExceptionState&);
     53 
     54     void trace(Visitor*);
     55 
     56 private:
     57     Headers();
     58     // Shares the FetchHeaderList. Called when creating a Request or Response.
     59     explicit Headers(FetchHeaderList*);
     60     void forEachInternal(HeadersForEachCallback*, const ScriptValue*);
     61 
     62     Member<FetchHeaderList> m_headerList;
     63     Guard m_guard;
     64 };
     65 
     66 } // namespace blink
     67 
     68 #endif // Headers_h
     69