64 lines
2 KiB
C++
64 lines
2 KiB
C++
// Copyright 2014 Cheng Zhao. All rights reserved.
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// Use of this source code is governed by MIT license that can be found in the
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// LICENSE file.
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#ifndef ELECTRON_SHELL_COMMON_GIN_HELPER_PERSISTENT_DICTIONARY_H_
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#define ELECTRON_SHELL_COMMON_GIN_HELPER_PERSISTENT_DICTIONARY_H_
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#include "base/memory/raw_ptr.h"
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#include "shell/common/gin_helper/dictionary.h"
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namespace gin_helper {
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// Like Dictionary, but stores object in persistent handle so you can keep it
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// safely on heap.
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//
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// TODO(zcbenz): The only user of this class is ElectronTouchBar, we should
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// migrate away from this class.
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class PersistentDictionary {
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public:
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PersistentDictionary();
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PersistentDictionary(v8::Isolate* isolate, v8::Local<v8::Object> object);
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PersistentDictionary(const PersistentDictionary& other);
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~PersistentDictionary();
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PersistentDictionary& operator=(const PersistentDictionary& other);
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v8::Local<v8::Object> GetHandle() const;
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template <typename K, typename V>
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bool Get(const K& key, V* out) const {
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v8::Local<v8::Context> context = isolate_->GetCurrentContext();
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v8::Local<v8::Value> v8_key = gin::ConvertToV8(isolate_, key);
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v8::Local<v8::Value> value;
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v8::Maybe<bool> result = GetHandle()->Has(context, v8_key);
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if (result.IsJust() && result.FromJust() &&
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GetHandle()->Get(context, v8_key).ToLocal(&value))
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return gin::ConvertFromV8(isolate_, value, out);
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return false;
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}
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private:
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raw_ptr<v8::Isolate> isolate_ = nullptr;
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v8::Global<v8::Object> handle_;
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};
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} // namespace gin_helper
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namespace gin {
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template <>
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struct Converter<gin_helper::PersistentDictionary> {
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static bool FromV8(v8::Isolate* isolate,
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v8::Local<v8::Value> val,
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gin_helper::PersistentDictionary* out) {
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if (!val->IsObject())
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return false;
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*out = gin_helper::PersistentDictionary(isolate, val.As<v8::Object>());
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return true;
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}
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};
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} // namespace gin
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#endif // ELECTRON_SHELL_COMMON_GIN_HELPER_PERSISTENT_DICTIONARY_H_
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