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105 lines
3.3 KiB
105 lines
3.3 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LIBTEXTCLASSIFIER_UTILS_INTENTS_JNI_LUA_H_
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#define LIBTEXTCLASSIFIER_UTILS_INTENTS_JNI_LUA_H_
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#include <map>
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#include <vector>
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#include "utils/base/statusor.h"
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#include "utils/i18n/locale.h"
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#include "utils/intents/remote-action-template.h"
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#include "utils/java/jni-base.h"
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#include "utils/java/jni-cache.h"
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#include "utils/lua-utils.h"
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#include "utils/resources.h"
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#include "utils/strings/stringpiece.h"
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#include "utils/variant.h"
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namespace libtextclassifier3 {
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// An Android specific Lua environment with JNI backed callbacks.
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class JniLuaEnvironment : public LuaEnvironment {
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public:
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JniLuaEnvironment(const Resources& resources, const JniCache* jni_cache,
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const jobject context,
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const std::vector<Locale>& device_locales);
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// Environment setup.
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bool Initialize();
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// Runs an intent generator snippet.
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bool RunIntentGenerator(const std::string& generator_snippet,
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std::vector<RemoteActionTemplate>* remote_actions);
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protected:
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virtual void SetupExternalHook();
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bool PreallocateConstantJniStrings();
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int HandleExternalCallback();
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int HandleAndroidCallback();
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int HandleUserRestrictionsCallback();
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int HandleUrlEncode();
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int HandleUrlSchema();
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int HandleHash();
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int HandleFormat();
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int HandleAndroidStringResources();
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int HandleUrlHost();
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// Checks and retrieves string resources from the model.
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bool LookupModelStringResource() const;
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// Reads and create a RemoteAction result from Lua.
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RemoteActionTemplate ReadRemoteActionTemplateResult() const;
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// Reads the extras from the Lua result.
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std::map<std::string, Variant> ReadExtras() const;
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// Retrieves user manager if not previously done.
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bool RetrieveUserManager();
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// Retrieves system resources if not previously done.
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bool RetrieveSystemResources();
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// Parse the url string by using Uri.parse from Java.
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StatusOr<ScopedLocalRef<jobject>> ParseUri(StringPiece url) const;
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// Read remote action templates from lua generator.
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int ReadRemoteActionTemplates(std::vector<RemoteActionTemplate>* result);
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const Resources& resources_;
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JNIEnv* jenv_;
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const JniCache* jni_cache_;
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const jobject context_;
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std::vector<Locale> device_locales_;
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ScopedGlobalRef<jobject> usermanager_;
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// Whether we previously attempted to retrieve the UserManager before.
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bool usermanager_retrieved_;
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ScopedGlobalRef<jobject> system_resources_;
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// Whether we previously attempted to retrieve the system resources.
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bool system_resources_resources_retrieved_;
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// Cached JNI references for Java strings `string` and `android`.
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ScopedGlobalRef<jstring> string_;
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ScopedGlobalRef<jstring> android_;
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};
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} // namespace libtextclassifier3
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#endif // LIBTEXTCLASSIFIER_UTILS_INTENTS_JNI_LUA_H_
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