/// <summary>
/// Initialize TabControl along with tab pages
/// </summary>
private void InitializeTabControl()
{
this.tabControl = new TabControl();
this.tabControl.Dock = DockStyle.Fill;
// Status Tab events
this.statusTab = new StatusTab();
this.statusTab.StartButtonClick += delegate(Object o, EventArgs e)
{
this.logic.Start(this);
};
this.statusTab.StopButtonClick += delegate(Object o, EventArgs e)
{
this.logic.Stop(this);
};
this.statusTab.NowButtonClick += delegate(Object o, EventArgs e)
{
this.logic.ConnectNow(this);
};
// Settings Tab events
this.settingsTab = new SettingsTab();
this.settingsTab.DataApplied += delegate(Object o, EventArgs e)
{
this.logic.SaveSettings(this, this.settingsTab.ConnectionData, this.settingsTab.StreamData);
// If current state is not IDLE then we notify the user that
// he must restart the job for the changes to take effect
if (this.Status != JobStatus.Idle)
{
MessageBox.Show("The changes will have effect only when you start the schedule again.", "Schedule must be restarted", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
};
this.aboutTab = this.getAboutTab();
this.tabControl.TabPages.Add(this.statusTab);
this.tabControl.TabPages.Add(this.settingsTab);
this.tabControl.TabPages.Add(this.aboutTab);
this.Controls.Add(this.tabControl);
}
/// <summary>
/// Connect to RVServer, send data, disconnect
/// </summary>
/// <param name="view">Main Window reference</param>
/// <param name="connectionData"></param>
/// <param name="streamData"></param>
private void ConnectOnce(MainWindow view, SettingsTab.ConnectionSettingsStruct connectionData, RVClient.StreamDataV1[] streamData)
{
// Comments on object synchronization
ThreadContext context = new ThreadContext();
context.connectionData = connectionData; // struct - needs no syncrhonization
context.streamData = streamData; // array - this object is created every time when accessing MainWindow's property;
// it can be also this.streamData reference but it is never modified in this class
context.view = view; // passed only to call Invoke()
// Conclusion: everything here is threadsafe.
Thread thread = new Thread(delegate(Object _tContext)
{
ThreadContext tContext = (ThreadContext)_tContext;
lock (this.isConnectingLock)
{
// If other thread is already connecting don't do the same
if (this.isConnecting)
{
tContext.view.WriteLog("Warning: Can't start new connection because the previous one is still handled.", true);
return;
}
else
{
this.isConnecting = true;
}
}
tContext.view.EnableProgressBar(true);
try
{
tContext.view.WriteLog("Opening connection to " + connectionData.host + ":" + connectionData.port + ".", true);
RVClient client = new RVClient(tContext.connectionData.host, tContext.connectionData.port);
bool result = client.sendStreamDataV1(tContext.connectionData.username, tContext.connectionData.password, tContext.streamData);
if (result)
{
tContext.view.WriteLog("Connection successful. Data Sent.", true);
}
else
{
tContext.view.Invoke((System.Windows.Forms.MethodInvoker)delegate()
{
if (tContext.view.Status != MainWindow.JobStatus.Idle)
{
tContext.view.Status = MainWindow.JobStatus.Error;
}
});
tContext.view.WriteLog("Error: Data undelivered.", true);
tContext.view.WriteLog("Additional error info: Server replied with failure code. Check username and/or password and try again.", true);
}
}
catch (Exception e)
{
tContext.view.Invoke((System.Windows.Forms.MethodInvoker)delegate()
{
if (tContext.view.Status != MainWindow.JobStatus.Idle)
{
tContext.view.Status = MainWindow.JobStatus.Error;
}
});
tContext.view.WriteLog("Error: " + e.Message, true);
if (e.InnerException != null)
{
tContext.view.WriteLog("Additional error info: " + e.InnerException.Message, true);
}
}
tContext.view.EnableProgressBar(false);
lock (isConnectingLock)
{
this.isConnecting = false;
}
});
thread.IsBackground = true;
thread.Start(context);
}
/// <summary>
/// Load settings from a file
/// </summary>
/// <param name="view">Main Window reference</param>
/// <param name="connectionData"></param>
/// <param name="streamData"></param>
/// <returns>Whether loading data succeeded and out parameters can be read.</returns>
/// <remarks>If file is corrupted and loading fails this method tries to reinitialize the file.</remarks>
public bool LoadSettings(MainWindow view, out SettingsTab.ConnectionSettingsStruct connectionData, out RVClient.StreamDataV1[] streamData)
{
FileStream stream = this.GetSettingsFileStream(view, false);
bool defaultSettings = false;
if (stream != null)
{
XmlSerializer serializer = new XmlSerializer(typeof(SerializedSettings));
SerializedSettings settings;
try
{
settings = (SerializedSettings)serializer.Deserialize(stream);
}
catch
{
view.WriteLog("Error: Could not load previous settings");
view.WriteLog("Falling back to default settings");
defaultSettings = true;
stream.SetLength(0);
InitializeSettingsFile(stream);
stream.Flush();
stream.Seek(0, SeekOrigin.Begin);
try
{
settings = (SerializedSettings)serializer.Deserialize(stream);
}
catch (Exception e2)
{
// Something must be really screwed up now...
view.WriteLog("Error: Could not reset to default settings");
view.WriteLog("Additional error info: " + e2.Message);
stream.Close();
connectionData = new SettingsTab.ConnectionSettingsStruct();
streamData = null;
return false;
}
}
connectionData = settings.connectionData;
streamData = settings.streamData;
stream.Close();
if (!defaultSettings)
{
view.WriteLog("Previous settings loaded successfully");
}
return true;
}
else
{
connectionData = new SettingsTab.ConnectionSettingsStruct();
streamData = null;
return false;
}
}
/// <summary>
/// Save passed settings to settings file
/// </summary>
/// <param name="view">Main Window reference</param>
/// <param name="connectionData"></param>
/// <param name="streamData"></param>
public void SaveSettings(MainWindow view, SettingsTab.ConnectionSettingsStruct connectionData, RVClient.StreamDataV1[] streamData)
{
FileStream stream = this.GetSettingsFileStream(view, true);
if (stream != null)
{
SerializedSettings settings = new SerializedSettings();
settings.connectionData = connectionData;
settings.streamData = streamData;
XmlSerializer serializer = new XmlSerializer(typeof(SerializedSettings));
try
{
serializer.Serialize(stream, settings);
}
catch
{
view.WriteLog("Error: Could not save new settings");
stream.Close();
return;
}
stream.Close();
view.WriteLog("New settings saved successfully");
}
}