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| 1 // Copyright (c) 2006-2008 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_ACTIVEX_SHIM_NPN_SCRIPTING_H__ | |
| 6 #define WEBKIT_ACTIVEX_SHIM_NPN_SCRIPTING_H__ | |
| 7 | |
| 8 #include <string> | |
| 9 #include "webkit/glue/plugins/nphostapi.h" | |
| 10 | |
| 11 namespace activex_shim { | |
| 12 | |
| 13 class NPNWindow; | |
| 14 class NPNDocument; | |
| 15 | |
| 16 // Simplifies querying and calling methods of a scriptable NPObject | |
| 17 class NPNScriptableObject { | |
| 18 public: | |
| 19 NPNScriptableObject(); | |
| 20 // The caller should leave the NPObject to me and don't worry about releasing | |
| 21 // the NPObject. | |
| 22 NPNScriptableObject(NPP npp, NPObject* object); | |
| 23 // Implement copy constructor so that we could easily do things like: | |
| 24 // NPNScriptableObject location = window.GetObjectProperty("location"); | |
| 25 // In this copy constructor we will ask the browser to add ref to the | |
| 26 // underlying NPObject (retainobject). | |
| 27 NPNScriptableObject(NPNScriptableObject& object); | |
| 28 // We will call the browser to release the object. | |
| 29 ~NPNScriptableObject(); | |
| 30 | |
| 31 // We will take over the object. Thus we don't add ref here. | |
| 32 void Init(NPP npp, NPObject* object); | |
| 33 // Release container object and set it to NULL. | |
| 34 void Release(); | |
| 35 // Reference counting for assignment | |
| 36 NPNScriptableObject& operator=(NPNScriptableObject& object); | |
| 37 | |
| 38 bool IsValid() { return object_ != NULL; } | |
| 39 bool HasProperty(const std::string& name); | |
| 40 // Caller is responsible to release the ret value if succeeded. | |
| 41 bool GetProperty(const std::string& name, NPVariant* ret); | |
| 42 bool SetProperty(const std::string& name, const NPVariant& val); | |
| 43 | |
| 44 // More specific Get/Set properties for convenience. | |
| 45 // If you don't care if the call was successful, you can pass succeeded as | |
| 46 // NULL. It is used to differentiate the case when we get an empty string, | |
| 47 // and don't know if it is because the call failed or not. | |
| 48 std::wstring GetStringProperty(const std::string& name, bool* succeeded); | |
| 49 std::wstring GetStringProperty(const std::string& name) { | |
| 50 return GetStringProperty(name, NULL); | |
| 51 } | |
| 52 bool SetStringProperty(const std::string& name, const std::wstring& val); | |
| 53 // See comments for GetStringProperty. | |
| 54 NPNScriptableObject GetObjectProperty(const std::string& name, | |
| 55 bool* succeeded); | |
| 56 NPNScriptableObject GetObjectProperty(const std::string& name) { | |
| 57 return GetObjectProperty(name, NULL); | |
| 58 } | |
| 59 | |
| 60 // Invoke a method of the NPObject. format should be exactly like (only the | |
| 61 // ones listed here are supported): | |
| 62 // %s: the following param is a null terminated wchar_t* string. | |
| 63 // %d: the following param is an integer. | |
| 64 // Example: window.Invoke("open", "%s%s", L"http://b", L"_blank") | |
| 65 // This is only used internally so we have control over format string. | |
| 66 bool Invoke(const std::string& name, const char* format, ...); | |
| 67 | |
| 68 private: | |
| 69 // Which NP instance created me. Used to pass as parameters in NPN_Invoke | |
| 70 // like calls. | |
| 71 NPP npp_; | |
| 72 // The NPObject that I am operating on. | |
| 73 NPObject* object_; | |
| 74 }; | |
| 75 | |
| 76 // Helper class to simplify use of NPVariant. Never add any virtual function | |
| 77 // or member variables to this class because we will use it like | |
| 78 // vector<NPVariantWrap> and pass the internal array as NPVariant* to NPAPI | |
| 79 // calls. | |
| 80 struct NPVariantWrap : public NPVariant { | |
| 81 NPVariantWrap(); | |
| 82 NPVariantWrap(const NPVariantWrap& v); | |
| 83 ~NPVariantWrap(); | |
| 84 NPVariantWrap& operator=(const NPVariantWrap& v); | |
| 85 void Release(); | |
| 86 void Copy(const NPVariant& v); | |
| 87 void SetBool(bool val); | |
| 88 void SetInt(int val); | |
| 89 void SetString(const std::wstring& val); | |
| 90 void SetUTF8String(const NPUTF8* p, unsigned int size); | |
| 91 }; | |
| 92 | |
| 93 } // namespace activex_shim | |
| 94 | |
| 95 #endif // #ifndef WEBKIT_ACTIVEX_SHIM_NPN_SCRIPTING_H__ | |
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