搭建PVB架构，实现前端的基础布局、菜单、表格、图示等功能

src/app/AppData.cpp

@@ -0,0 +1,49 @@
+#include "AppData.h"
+
+#include "app/Station.h"
+
+std::shared_ptr<Station> AppData::getStation(int stationId)
+{
+    auto iter = mapStation.find(stationId);
+    if (iter!=mapStation.end())
+    {
+        return iter->second;
+    }
+    return nullptr;
+}
+
+std::shared_ptr<Station> AppData::getStationByName(std::string name)
+{
+    for (auto iter = mapStation.begin(); iter!=mapStation.end(); ++iter)
+    {
+        if (iter->second->name == name)
+        {
+            return iter->second;
+        }
+    }
+    return nullptr;
+}
+
+void AppData::getStationNames(std::vector<std::string>& vecNames)
+{
+    vecNames.resize(mapStation.size());
+    int i = 0;
+    for (auto iter = mapStation.begin(); iter!=mapStation.end(); ++iter)
+    {
+        vecNames[i] = iter->second->name;
+    }
+}
+
+std::shared_ptr<Device> AppData::getDevice(int stationId, int deviceId)
+{
+    auto station = getStation(stationId);
+    if (station)
+    {
+        return station->getDevice(deviceId);
+    }
+    return nullptr;
+}
+
+void AppData::loadStatData()
+{
+}