77 lines
3.0 KiB
C
77 lines
3.0 KiB
C
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// Copyright (c) 2008 The Chromium Embedded Framework Authors.
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// Portions copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _VARIANT_IMPL_H
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#define _VARIANT_IMPL_H
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#include "../include/cef.h"
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#include "third_party/npapi/bindings/npruntime.h"
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class WebFrame;
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// Implementation of CefPostDataElement that provides a class wrapper for an
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// NPVariant structure.
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// Portions of the implementation are borrowed from webkit\glue\cpp_variant.cc
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class CefVariantImpl : public CefThreadSafeBase<CefVariant>
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{
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public:
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CefVariantImpl();
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CefVariantImpl(WebFrame *webframe);
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~CefVariantImpl();
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virtual Type GetType();
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virtual void SetNull();
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virtual void SetBool(bool val);
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virtual void SetInt(int val);
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virtual void SetDouble(double val);
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virtual void SetString(const std::wstring& val);
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virtual void SetBoolArray(const std::vector<bool>& val);
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virtual void SetIntArray(const std::vector<int>& val);
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virtual void SetDoubleArray(const std::vector<double>& val);
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virtual void SetStringArray(const std::vector<std::wstring>& val);
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virtual bool GetBool();
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virtual int GetInt();
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virtual double GetDouble();
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virtual std::wstring GetString();
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virtual bool GetBoolArray(std::vector<bool>& val);
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virtual bool GetIntArray(std::vector<int>& val);
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virtual bool GetDoubleArray(std::vector<double>& val);
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virtual bool GetStringArray(std::vector<std::wstring>& val);
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// These three methods all perform deep copies of any string data. This
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// allows the local CefVariantImpl to be released by the destructor without
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// corrupting their sources. In performance-critical code, or when strings
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// are very long, avoid creating new CefVariantImpl.
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// In case of NPObject as the data, the copying involves ref-counting
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// as opposed to deep-copying. The ref-counting ensures that sources don't
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// get corrupted when the copies get destroyed.
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void CopyToNPVariant(NPVariant* result);
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CefVariantImpl& operator=(const CefVariantImpl& original);
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CefVariantImpl(const CefVariantImpl& original);
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// Note that setting a CefVariant to an NPObject involves ref-counting
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// the actual object. SetNull() should only be called if the CefVariant
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// is no longer needed. The other Set() methods handle this internally.
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// Also, the object's NPClass is expected to be a static object: neither
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// the NP runtime nor CefVariant will ever free it.
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void Set(NPObject* val);
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void Set(const NPString& val);
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void Set(const NPVariant& val);
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const NPVariant* GetNPVariant() const { return &variant_; }
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protected:
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// Underlying NPVariant structure.
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NPVariant variant_;
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// Pointer to the WebFrame that represents the context for this CefVariant
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// object. This pointer is used for creating new NPObjects in the Set*()
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// methods that accept array arguments.
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WebFrame* webframe_;
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};
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#endif // _VARIANT_IMPL_H
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