UWP: Bookmarks

support/hololens/ServoApp/Bookmarks.cpp

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#include "pch.h"
+#include "Bookmarks.h"
+
+namespace winrt::servo {
+
+using namespace Windows::Storage;
+using namespace Windows::UI::Core;
+using namespace Windows::Foundation;
+using namespace Windows::Data::Json;
+using namespace Windows::ApplicationModel::Core;
+
+Bookmarks::Bookmarks() {
+  db = winrt::single_threaded_observable_vector<IInspectable>();
+  auto x = Concurrency::create_task([=] {
+    auto storageFolder = ApplicationData::Current().LocalFolder();
+    auto bm_file = storageFolder.GetFileAsync(L"bookmarks.json").get();
+    bool file_exist =
+        storageFolder.TryGetItemAsync(L"bookmarks.json").get() != nullptr;
+    if (file_exist) {
+      auto content = FileIO::ReadTextAsync(bm_file).get();
+      JsonValue out = JsonValue::Parse(L"[]");
+      if (!JsonValue::TryParse(content, out)) {
+        return;
+      }
+      auto list = out.GetArray();
+      std::vector<IInspectable> bookmarks;
+      for (auto value : list) {
+        auto obj = value.GetObject();
+        auto name = obj.GetNamedString(L"name");
+        auto url = obj.GetNamedString(L"url");
+        bookmarks.push_back(box_value(ServoApp::Bookmark(url, name)));
+      }
+      auto dispatcher = CoreApplication::MainView().CoreWindow().Dispatcher();
+      dispatcher.RunAsync(CoreDispatcherPriority::High, [=] {
+        db.ReplaceAll(bookmarks);
+        BuildIndex();
+      });
+    }
+  });
+}
+
+bool Bookmarks::Contains(const hstring &url) { return mIndex.count(url) > 0; }
+
+void Bookmarks::Set(hstring url, hstring title) {
+  auto bm = box_value(ServoApp::Bookmark(url, title));
+  if (Contains(url)) {
+    auto index = mIndex.at(url);
+    db.SetAt(index, bm);
+  } else {
+    db.Append(bm);
+  }
+  InvalidateDB();
+}
+
+hstring Bookmarks::GetName(const hstring &url) {
+  auto index = mIndex.at(url);
+  ServoApp::Bookmark bm = unbox_value<ServoApp::Bookmark>(db.GetAt(index));
+  return bm.Name();
+}
+
+void Bookmarks::Delete(const hstring &url) {
+  auto index = mIndex.at(url);
+  db.RemoveAt(index);
+  InvalidateDB();
+}
+
+void Bookmarks::BuildIndex() {
+  mIndex.clear();
+  int i = 0;
+  for (auto bm : db) {
+    auto url = unbox_value<ServoApp::Bookmark>(bm).Url();
+    mIndex.insert_or_assign(url, i++);
+  }
+}
+
+void Bookmarks::InvalidateDB() {
+  BuildIndex();
+  WriteSettings();
+}
+
+IAsyncAction Bookmarks::WriteSettings() {
+  auto storageFolder = ApplicationData::Current().LocalFolder();
+  auto file = co_await storageFolder.CreateFileAsync(
+      L"bookmarks.json", CreationCollisionOption::ReplaceExisting);
+  JsonArray list;
+  for (auto boxed_bm : db) {
+    auto bm = unbox_value<ServoApp::Bookmark>(boxed_bm);
+    JsonObject bookmark;
+    bookmark.Insert(L"name", JsonValue::CreateStringValue(bm.Name()));
+    bookmark.Insert(L"url", JsonValue::CreateStringValue(bm.Url()));
+    list.Append(bookmark);
+  }
+  FileIO::WriteTextAsync(file, list.Stringify());
+}
+
+} // namespace winrt::servo