New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/drape_frontend/drape_api.cpp

@@ -0,0 +1,77 @@
+#include "drape_frontend/drape_api.hpp"
+#include "drape_frontend/drape_engine.hpp"
+#include "drape_frontend/message_subclasses.hpp"
+
+namespace df
+{
+void DrapeApi::SetDrapeEngine(ref_ptr<DrapeEngine> engine)
+{
+  m_engine.Set(engine);
+}
+
+void DrapeApi::AddLine(std::string const & id, DrapeApiLineData const & data)
+{
+  DrapeEngineLockGuard lock(m_engine);
+  if (!lock)
+    return;
+
+  auto & threadCommutator = lock.Get()->m_threadCommutator;
+  auto const it = m_lines.find(id);
+  if (it != m_lines.end())
+  {
+    threadCommutator->PostMessage(ThreadsCommutator::ResourceUploadThread,
+                                  make_unique_dp<DrapeApiRemoveMessage>(id),
+                                  MessagePriority::Normal);
+  }
+
+  m_lines[id] = data;
+
+  TLines lines;
+  lines.insert(std::make_pair(id, data));
+  threadCommutator->PostMessage(ThreadsCommutator::ResourceUploadThread,
+                                make_unique_dp<DrapeApiAddLinesMessage>(lines),
+                                MessagePriority::Normal);
+}
+
+void DrapeApi::RemoveLine(std::string const & id)
+{
+  DrapeEngineLockGuard lock(m_engine);
+  if (!lock)
+    return;
+
+  auto & threadCommutator = lock.Get()->m_threadCommutator;
+  m_lines.erase(id);
+  threadCommutator->PostMessage(ThreadsCommutator::ResourceUploadThread,
+                                make_unique_dp<DrapeApiRemoveMessage>(id),
+                                MessagePriority::Normal);
+}
+
+void DrapeApi::Clear()
+{
+  DrapeEngineLockGuard lock(m_engine);
+  if (!lock)
+    return;
+
+  auto & threadCommutator = lock.Get()->m_threadCommutator;
+  m_lines.clear();
+  threadCommutator->PostMessage(ThreadsCommutator::ResourceUploadThread,
+                                make_unique_dp<DrapeApiRemoveMessage>("", true /* remove all */),
+                                MessagePriority::Normal);
+}
+
+void DrapeApi::Invalidate()
+{
+  DrapeEngineLockGuard lock(m_engine);
+  if (!lock)
+    return;
+
+  auto & threadCommutator = lock.Get()->m_threadCommutator;
+  threadCommutator->PostMessage(ThreadsCommutator::ResourceUploadThread,
+                                make_unique_dp<DrapeApiRemoveMessage>("", true /* remove all */),
+                                MessagePriority::Normal);
+
+  threadCommutator->PostMessage(ThreadsCommutator::ResourceUploadThread,
+                                make_unique_dp<DrapeApiAddLinesMessage>(m_lines),
+                                MessagePriority::Normal);
+}
+}  // namespace df