Track Editor

Maria track editor (WPF)

This section describes how to create a WPF application interacting with a Maria Track Service, without using MariaUserControl and track layer.

General

This page is under construction!

Note

• For general description of track related info, see General track service information.
• For this part you will need to include the TPG.Maria.TrackLayer NuGet package as a minimum.
• You also need to have a Track Service available.
• Sample code for this section is the MariaTrackEditor project, in the Sample Projects solution.

Start with creating a WPF App project!

Track service engine

The Track service engine encapsulates service interaction.

Available functions:

Connection

• ConnectToTrackService

Connect to specified track service.

• If URI is not given, endpoint info from configuration file will be used (if available).

Binding type is assumed to be BasicHttp!

• Disconnect

Disconnect from service

• IsConnected

Get current connection status.

Track lists

• GetTrackLists

Retreive available tracklists from track service.

• AddTrackList

Create a new track list.

• RemoveTrackList

Remove track list, and all track info, if any.

Tracks

• GetAllTracks

Retreive available tracks from a specific track list, matching the search criteria.

• GetTrackData

Retreive specified tracks from a specific track list.

• AddOrUpdateTrack

Create or update specific track.

Track history setting

• GetTrackHistoryOptions

• SetDefaultTrackHistoryOptions

Set default track history options for new track lists.

• SetTrackHistoryOptions

Retreive track history options for specified track list.

Track history

• RemoveTrack

Remove specified track from specific track list

• GetTrackHistory

Retreive available track history information for specified track & track list, according to filter criteria.

Source code for MariaTrackServiceEngine

Track editor

Connect/disconnect

At startup, the Track Editor will try to connect to the latest track service successfully connected to.
To store the last value used, add a string value, StrLastUri to the project settings.

Adding project settings

Add the following to your window xaml:

<GroupBox Header="Connection" >
    <Grid >
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="auto"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="100"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="100"/>
        </Grid.ColumnDefinitions>
        <Label Content="Service URI"/>
        <TextBox Grid.Row="0" Grid.Column="1" Margin="2"
                 Text="{Binding ConnectionUri}"/>
        <Button Grid.Row="0" Grid.Column="3" Height="22" Margin="2" 
                Content="Connect"
                Command="{Binding ConnectCmd}" />
        <Label Grid.Row="1" Grid.Column="0" Margin="2"
               Content="Status"/>
        <TextBlock Grid.Row="1" Grid.Column="1" Margin="2"
                   VerticalAlignment="Center"
                   Text="{Binding ConnectionStatus}"/>
        <Button Grid.Row="1" Grid.Column="3" Height="22" Margin="2"
                Content="Disconnect" 
                Command="{Binding DisconnectCmd}"/>
    </Grid>
</GroupBox>

Then, add the following to your view model:

. . .
public ICommand ConnectCmd { get { return new DelegateCommand(Connect, CanConnect); } }
public ICommand DisconnectCmd { get { return new DelegateCommand(Disconnect, CanDisconnect); } }
. . .
private void Connect(object obj = null)
{
    ConnectionStatus = "Connection requested ... ";

    if (_trackServiceEngine.ConnectToTrackService(ref _connectionUri))
    {
        Settings.Default.StrLastUri = ConnectionUri;
        Settings.Default.Save();

        ConnectionStatus = "Connected!";
    }
    else 
    {
        ConnectionStatus = "Not connected, connection failed! ";

        if (string.IsNullOrWhiteSpace(ConnectionUri))
        {
            ConnectionStatus += "\nSupply URI - or correct 'system.serviceModel' configuration!";
        }
    }

    RefreshConnectionInfo();
}

private bool CanConnect(object obj)
{
    return !_trackServiceEngine.IsConnected();
}

private void Disconnect(object obj)
{
    _trackServiceEngine.Disconnect();

    ConnectionStatus = "Disconnected!";
}

private bool CanDisconnect(object obj)
{
    return  _trackServiceEngine.IsConnected(); 
}
. . .
public string ConnectionUri {
    get { return _connectionUri; }
    set
    {
        _connectionUri = value;
        NotifyPropertyChanged(() => ConnectionUri);
    }
}

public string ConnectionStatus
{
    get { return _connectionStatus; }
    set
    {
        _connectionStatus = value;
        NotifyPropertyChanged(() => ConnectionStatus);
    }
}      
. . .
internal void RefreshConnectionInfo()
{
    NotifyPropertyChanged(() => ConnectionStatus);
    NotifyPropertyChanged(() => ConnectionUri);
}
. . .

Run your application, and verify that you can connect to your track service(s), and that the last successful service URI is used when restarting the application.

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