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#include "file_source.hpp"
#include "attach_env.hpp"
#include <mbgl/actor/actor.hpp>
#include <mbgl/actor/scheduler.hpp>
#include <mbgl/storage/resource_transform.hpp>
#include <mbgl/util/logging.hpp>
#include <mbgl/storage/sqlite3.hpp>
#include "asset_manager_file_source.hpp"
namespace mbgl {
namespace android {
// FileSource //
FileSource::FileSource(jni::JNIEnv& _env,
const jni::String& accessToken,
const jni::String& _cachePath,
const jni::Object<AssetManager>& assetManager) {
mapbox::sqlite::setTempPath(jni::Make<std::string>(_env, _cachePath));
// Create a core default file source
fileSource = std::make_unique<mbgl::DefaultFileSource>(
jni::Make<std::string>(_env, _cachePath) + "/mbgl-offline.db",
std::make_unique<AssetManagerFileSource>(_env, assetManager));
// Set access token
if (accessToken) {
fileSource->setAccessToken(jni::Make<std::string>(_env, accessToken));
}
}
FileSource::~FileSource() {
}
jni::Local<jni::String> FileSource::getAccessToken(jni::JNIEnv& env) {
return jni::Make<jni::String>(env, fileSource->getAccessToken());
}
void FileSource::setAccessToken(jni::JNIEnv& env, const jni::String& token) {
fileSource->setAccessToken(jni::Make<std::string>(env, token));
}
void FileSource::setAPIBaseUrl(jni::JNIEnv& env, const jni::String& url) {
fileSource->setAPIBaseURL(jni::Make<std::string>(env, url));
}
void FileSource::setResourceTransform(jni::JNIEnv& env, const jni::Object<FileSource::ResourceTransformCallback>& transformCallback) {
if (transformCallback) {
auto global = jni::NewGlobal<jni::EnvAttachingDeleter>(env, transformCallback);
resourceTransform = std::make_unique<Actor<ResourceTransform>>(*Scheduler::GetCurrent(),
// Capture the ResourceTransformCallback object as a managed global into
// the lambda. It is released automatically when we're setting a new ResourceTransform in
// a subsequent call.
// Note: we're converting it to shared_ptr because this lambda is converted to a std::function,
// which requires copyability of its captured variables.
[callback = std::make_shared<decltype(global)>(std::move(global))]
(mbgl::Resource::Kind kind, const std::string&& url_) {
android::UniqueEnv _env = android::AttachEnv();
return FileSource::ResourceTransformCallback::onURL(*_env, *callback, int(kind), url_);
});
fileSource->setResourceTransform(resourceTransform->self());
} else {
// Reset the callback
resourceTransform.reset();
fileSource->setResourceTransform({});
}
}
void FileSource::resume(jni::JNIEnv&) {
if (!activationCounter) {
activationCounter = optional<int>(1) ;
return;
}
activationCounter.value()++;
if (activationCounter == 1) {
fileSource->resume();
}
}
void FileSource::pause(jni::JNIEnv&) {
if (activationCounter) {
activationCounter.value()--;
if (activationCounter == 0) {
fileSource->pause();
}
}
}
jni::jboolean FileSource::isResumed(jni::JNIEnv&) {
if (activationCounter) {
return (jboolean) (activationCounter > 0);
}
return (jboolean) false;
}
FileSource* FileSource::getNativePeer(jni::JNIEnv& env, const jni::Object<FileSource>& jFileSource) {
static auto& javaClass = jni::Class<FileSource>::Singleton(env);
static auto field = javaClass.GetField<jlong>(env, "nativePtr");
return reinterpret_cast<FileSource *>(jFileSource.Get(env, field));
}
mbgl::DefaultFileSource& FileSource::getDefaultFileSource(jni::JNIEnv& env, const jni::Object<FileSource>& jFileSource) {
FileSource* fileSource = FileSource::getNativePeer(env, jFileSource);
assert(fileSource != nullptr);
return *fileSource->fileSource;
}
void FileSource::registerNative(jni::JNIEnv& env) {
// Ensure the class for ResourceTransformCallback is cached. If it's requested for the
// first time on a background thread, Android's class loader heuristics will fail.
// https://developer.android.com/training/articles/perf-jni#faq_FindClass
jni::Class<ResourceTransformCallback>::Singleton(env);
static auto& javaClass = jni::Class<FileSource>::Singleton(env);
#define METHOD(MethodPtr, name) jni::MakeNativePeerMethod<decltype(MethodPtr), (MethodPtr)>(name)
// Register the peer
jni::RegisterNativePeer<FileSource>(
env, javaClass, "nativePtr",
jni::MakePeer<FileSource, const jni::String&, const jni::String&, const jni::Object<AssetManager>&>,
"initialize",
"finalize",
METHOD(&FileSource::getAccessToken, "getAccessToken"),
METHOD(&FileSource::setAccessToken, "setAccessToken"),
METHOD(&FileSource::setAPIBaseUrl, "setApiBaseUrl"),
METHOD(&FileSource::setResourceTransform, "setResourceTransform"),
METHOD(&FileSource::resume, "activate"),
METHOD(&FileSource::pause, "deactivate"),
METHOD(&FileSource::isResumed, "isActivated")
);
}
// FileSource::ResourceTransformCallback //
std::string FileSource::ResourceTransformCallback::onURL(jni::JNIEnv& env, const jni::Object<FileSource::ResourceTransformCallback>& callback, int kind, std::string url_) {
static auto& javaClass = jni::Class<FileSource::ResourceTransformCallback>::Singleton(env);
static auto method = javaClass.GetMethod<jni::String (jni::jint, jni::String)>(env, "onURL");
return jni::Make<std::string>(env,
callback.Call(env, method, kind,
jni::Make<jni::String>(env, url_)));
}
} // namespace android
} // namespace mbgl
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