77 lines
3 KiB
C++
77 lines
3 KiB
C++
// Copyright (c) 2019 GitHub, Inc. All rights reserved.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef SHELL_COMMON_GIN_HELPER_OBJECT_TEMPLATE_BUILDER_H_
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#define SHELL_COMMON_GIN_HELPER_OBJECT_TEMPLATE_BUILDER_H_
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#include "shell/common/gin_helper/function_template.h"
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namespace gin_helper {
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// This class works like gin::ObjectTemplateBuilder, but operates on existing
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// prototype template instead of creating a new one.
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//
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// It also uses gin_helper::CreateFunctionTemplate for function templates to
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// support gin_helper types.
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//
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// TODO(zcbenz): We should patch gin::ObjectTemplateBuilder to provide the same
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// functionality after removing gin_helper/function_template.h.
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class ObjectTemplateBuilder {
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public:
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ObjectTemplateBuilder(v8::Isolate* isolate,
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v8::Local<v8::ObjectTemplate> templ);
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~ObjectTemplateBuilder();
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// It's against Google C++ style to return a non-const ref, but we take some
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// poetic license here in order that all calls to Set() can be via the '.'
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// operator and line up nicely.
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template <typename T>
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ObjectTemplateBuilder& SetValue(const base::StringPiece& name, T val) {
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return SetImpl(name, ConvertToV8(isolate_, val));
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}
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// In the following methods, T and U can be function pointer, member function
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// pointer, base::RepeatingCallback, or v8::FunctionTemplate. Most clients
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// will want to use one of the first two options. Also see
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// gin::CreateFunctionTemplate() for creating raw function templates.
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template <typename T>
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ObjectTemplateBuilder& SetMethod(const base::StringPiece& name,
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const T& callback) {
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return SetImpl(name, CallbackTraits<T>::CreateTemplate(isolate_, callback));
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}
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template <typename T>
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ObjectTemplateBuilder& SetProperty(const base::StringPiece& name,
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const T& getter) {
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return SetPropertyImpl(name,
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CallbackTraits<T>::CreateTemplate(isolate_, getter),
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v8::Local<v8::FunctionTemplate>());
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}
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template <typename T, typename U>
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ObjectTemplateBuilder& SetProperty(const base::StringPiece& name,
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const T& getter,
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const U& setter) {
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return SetPropertyImpl(name,
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CallbackTraits<T>::CreateTemplate(isolate_, getter),
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CallbackTraits<U>::CreateTemplate(isolate_, setter));
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}
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v8::Local<v8::ObjectTemplate> Build();
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private:
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ObjectTemplateBuilder& SetImpl(const base::StringPiece& name,
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v8::Local<v8::Data> val);
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ObjectTemplateBuilder& SetPropertyImpl(
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const base::StringPiece& name,
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v8::Local<v8::FunctionTemplate> getter,
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v8::Local<v8::FunctionTemplate> setter);
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v8::Isolate* isolate_;
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// ObjectTemplateBuilder should only be used on the stack.
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v8::Local<v8::ObjectTemplate> template_;
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};
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} // namespace gin_helper
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#endif // SHELL_COMMON_GIN_HELPER_OBJECT_TEMPLATE_BUILDER_H_
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