blob: ecf97a4ce5e69208e2d6d5f6ae40b30d7c17e4d5 [file] [log] [blame] [edit]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "flutter/assets/asset_manager.h"
#include "flutter/assets/directory_asset_bundle.h"
#include "flutter/fml/trace_event.h"
namespace flutter {
AssetManager::AssetManager() = default;
AssetManager::~AssetManager() = default;
bool AssetManager::PushFront(std::unique_ptr<AssetResolver> resolver) {
if (resolver == nullptr || !resolver->IsValid()) {
return false;
}
resolvers_.push_front(std::move(resolver));
return true;
}
bool AssetManager::PushBack(std::unique_ptr<AssetResolver> resolver) {
if (resolver == nullptr || !resolver->IsValid()) {
return false;
}
resolvers_.push_back(std::move(resolver));
return true;
}
void AssetManager::UpdateResolverByType(
std::unique_ptr<AssetResolver> updated_asset_resolver,
AssetResolver::AssetResolverType type) {
if (updated_asset_resolver == nullptr) {
return;
}
bool updated = false;
std::deque<std::unique_ptr<AssetResolver>> new_resolvers;
for (auto& old_resolver : resolvers_) {
if (!updated && old_resolver->GetType() == type) {
// Push the replacement updated resolver in place of the old_resolver.
new_resolvers.push_back(std::move(updated_asset_resolver));
updated = true;
} else {
new_resolvers.push_back(std::move(old_resolver));
}
}
// Append resolver to the end if not used as a replacement.
if (!updated) {
new_resolvers.push_back(std::move(updated_asset_resolver));
}
resolvers_.swap(new_resolvers);
}
std::deque<std::unique_ptr<AssetResolver>> AssetManager::TakeResolvers() {
return std::move(resolvers_);
}
// |AssetResolver|
std::unique_ptr<fml::Mapping> AssetManager::GetAsMapping(
const std::string& asset_name) const {
if (asset_name.empty()) {
return nullptr;
}
TRACE_EVENT1("flutter", "AssetManager::GetAsMapping", "name",
asset_name.c_str());
for (const auto& resolver : resolvers_) {
auto mapping = resolver->GetAsMapping(asset_name);
if (mapping != nullptr) {
return mapping;
}
}
FML_DLOG(WARNING) << "Could not find asset: " << asset_name;
return nullptr;
}
// |AssetResolver|
std::vector<std::unique_ptr<fml::Mapping>> AssetManager::GetAsMappings(
const std::string& asset_pattern,
const std::optional<std::string>& subdir) const {
std::vector<std::unique_ptr<fml::Mapping>> mappings;
if (asset_pattern.empty()) {
return mappings;
}
TRACE_EVENT1("flutter", "AssetManager::GetAsMappings", "pattern",
asset_pattern.c_str());
for (const auto& resolver : resolvers_) {
auto resolver_mappings = resolver->GetAsMappings(asset_pattern, subdir);
mappings.insert(mappings.end(),
std::make_move_iterator(resolver_mappings.begin()),
std::make_move_iterator(resolver_mappings.end()));
}
return mappings;
}
// |AssetResolver|
bool AssetManager::IsValid() const {
return !resolvers_.empty();
}
// |AssetResolver|
bool AssetManager::IsValidAfterAssetManagerChange() const {
return false;
}
// |AssetResolver|
AssetResolver::AssetResolverType AssetManager::GetType() const {
return AssetResolverType::kAssetManager;
}
} // namespace flutter