Organic Maps sources as of 02.04.2025 (fad26bbf22ac3da75e01e62aa01e5c8e11861005)

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search/emitter.hpp

@@ -0,0 +1,61 @@
+#pragma once
+
+#include "search/result.hpp"
+#include "search/search_params.hpp"
+
+#include "base/logging.hpp"
+#include "base/timer.hpp"
+
+#include <string>
+#include <vector>
+
+namespace search
+{
+namespace bookmarks
+{
+struct Result;
+}
+
+class Emitter
+{
+public:
+  void Init(SearchParams::OnResults onResults)
+  {
+    m_onResults = std::move(onResults);
+    m_results.Clear();
+    m_prevEmitSize = 0;
+    m_timer.Reset();
+  }
+
+  bool AddResult(Result && res) { return m_results.AddResult(std::move(res)); }
+  void AddResultNoChecks(Result && res) { m_results.AddResultNoChecks(std::move(res)); }
+  void AddBookmarkResult(bookmarks::Result const & result) { m_results.AddBookmarkResult(result); }
+
+  void Emit(bool force = false)
+  {
+    auto const newCount = m_results.GetCount();
+    if (m_prevEmitSize == newCount && !force)
+      return;
+
+    LOG(LINFO, ("Emitting a new batch of results:", newCount - m_prevEmitSize, ",",
+        m_timer.ElapsedMilliseconds(), "ms since the search has started."));
+    m_prevEmitSize = m_results.GetCount();
+
+    m_onResults(m_results);
+  }
+
+  Results const & GetResults() const { return m_results; }
+
+  void Finish(bool cancelled)
+  {
+    m_results.SetEndMarker(cancelled);
+    Emit(true /* force */);
+  }
+
+private:
+  SearchParams::OnResults m_onResults;
+  Results m_results;
+  size_t m_prevEmitSize = 0;
+  base::Timer m_timer;
+};
+}  // namespace search