mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
// 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;
|
|
|
|
void AssetManager::PushFront(std::unique_ptr<AssetResolver> resolver) {
|
|
if (resolver == nullptr || !resolver->IsValid()) {
|
|
return;
|
|
}
|
|
|
|
resolvers_.push_front(std::move(resolver));
|
|
}
|
|
|
|
void AssetManager::PushBack(std::unique_ptr<AssetResolver> resolver) {
|
|
if (resolver == nullptr || !resolver->IsValid()) {
|
|
return;
|
|
}
|
|
|
|
resolvers_.push_back(std::move(resolver));
|
|
}
|
|
|
|
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.size() == 0) {
|
|
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::vector<std::unique_ptr<fml::Mapping>> mappings;
|
|
if (asset_pattern.size() == 0) {
|
|
return mappings;
|
|
}
|
|
TRACE_EVENT1("flutter", "AssetManager::GetAsMappings", "pattern",
|
|
asset_pattern.c_str());
|
|
for (const auto& resolver : resolvers_) {
|
|
auto resolver_mappings = resolver->GetAsMappings(asset_pattern);
|
|
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_.size() > 0;
|
|
}
|
|
|
|
// |AssetResolver|
|
|
bool AssetManager::IsValidAfterAssetManagerChange() const {
|
|
return false;
|
|
}
|
|
|
|
} // namespace flutter
|