/// <summary>
///
/// </summary>
private void PerformImport(string _scope, GraphDataFormatBase format)
{
string importData = string.Empty;
System.Windows.Controls.OpenFileDialog openFileDialog = new System.Windows.Controls.OpenFileDialog();
openFileDialog.Filter = string.Format("{0} (*.{1}) | *.{1}", format.Description, format.Extension);
openFileDialog.FilterIndex = 1;
openFileDialog.Multiselect = false;
bool? dialogResult = openFileDialog.ShowDialog();
if (dialogResult == true)
{
// Open the file and read it into our variable
importData = openFileDialog.File.OpenText().ReadToEnd();
//TODO: ADD ERROR TRAPPING HERE
if (!string.IsNullOrEmpty(importData))
{
ImportData(importData, _scope, format);
}
}
}
/// <summary>
/// Loads the specified data into an existing graph
/// </summary>
/// <param name="data">Graph data to load onto the graph</param>
/// <param name="scope">Specifies the graph scope</param>
/// <param name="graphDataFormat">Specifies the graph format (e.g., GraphML)</param>
public void ImportLiveData(string data, string scope, GraphDataFormatBase graphDataFormat)
{
GraphComponents components;
if (String.IsNullOrWhiteSpace(data))
{
throw new ArgumentNullException("data");
}
if (String.IsNullOrWhiteSpace(scope))
{
throw new ArgumentNullException("scope");
}
if (!this.graphComponentsInstances.ContainsKey(scope))
{
throw new InvalidOperationException("Unable to locate an existing GraphComponents with the specified scope");
}
// Get any existing graph compents with the specified scope
components = this.graphComponentsInstances[scope];
// Import the data into the provided components
graphDataFormat.Import(data, components, CreationType.Live);
// Fire the LiveDataLoaded event
DispatcherHelper.UIDispatcher.BeginInvoke(() =>
SnaglEventAggregator.DefaultInstance.GetEvent<LiveDataLoadedEvent>().Publish(new DataLoadedEventArgs(components.Scope, CreationType.Live))
);
}
/// <summary>
/// Imports GraphML into SnagL on a new graph
/// </summary>
/// <param name="data">The graph data to place on the graph</param>
/// <param name="scope">Specifies the graphs scope</param>
/// <param name="format">Specifies the graph data format</param>
public void ImportData(string data, string scope, GraphDataFormatBase format)
{
SnaglEventAggregator.DefaultInstance.GetEvent<UI.TimeConsumingTaskExecutingEvent>().Publish(new UI.TimeConsumingTaskEventArgs());
GraphComponents components = null;
// Check if the provided scope is null or empty
if (string.IsNullOrEmpty(scope))
{
// This is a new graph so we will generate new GraphComponents
// for it
components = new GraphComponents();
}
else
{
// Attempt to get the graph components instance for
// the given scope
components = GetGraphComponents(scope);
// If we were unable to get an instance, create a
// new one
if (components == null)
components = new GraphComponents();
}
components.Clear();
GlobalAttributeCollection.GetInstance(scope).Clear();
// Import the data into the provided components
format.Import(data, components, CreationType.Imported);
// Check if the default instance (which is the first instance
// created) has been initialized yet
if (this.defaultComponentInstanceScope == string.Empty)
{
// TODO: ENSURE THIS IS VALID IN THE FUTURE AS THE MAIN GRAPH MAY NOT ALWAYS POPULATE FIRST (BUT SHOULD BE)
// Save the newly created components as the default
this.defaultComponentInstanceScope = components.Scope;
}
// Now we need to update or add the components to the collection of components
// Check if the collection has never been initialized
if (this.graphComponentsInstances == null)
{
// Initialize the collection
this.graphComponentsInstances = new Dictionary<string, GraphComponents>();
}
// Check if we have no items
if (this.graphComponentsInstances.Count == 0)
{
// Add the components instance to the collection
this.graphComponentsInstances.Add(components.Scope, components);
}
else
{
// Ensure that the scope doesn't already exist
if (this.graphComponentsInstances.ContainsKey(components.Scope))
{
// Update the components instance for the specified scope
this.graphComponentsInstances[components.Scope] = components;
}
else
{
// Add the new instance for the specified scope
this.graphComponentsInstances.Add(components.Scope, components);
}
}
//TODO MAKE SURE THAT WE HAVE DATA
// Fire the DataLoaded event
DispatcherHelper.UIDispatcher.BeginInvoke(() =>
SnaglEventAggregator.DefaultInstance.GetEvent<DataLoadedEvent>().Publish(new DataLoadedEventArgs(components.Scope, CreationType.Imported))
);
SnaglEventAggregator.DefaultInstance.GetEvent<TimeConsumingTaskCompletedEvent>().Publish(new TimeConsumingTaskEventArgs());
}
/// <summary>
/// Loads the specified data into an existing graph
/// </summary>
/// <param name="data">Graph data to load onto the graph</param>
/// <param name="graphDataFormat">Specifies the graph format (e.g., GraphML)</param>
public void ImportLiveData(string data, GraphDataFormatBase graphDataFormat)
{
ImportLiveData(data, this.defaultComponentInstanceScope, graphDataFormat);
}
/// <summary>
/// Updates the SnagL graph with the supplied data.
/// This is a temporary delegate to deal with deferred excecution problem with a lambda expression
/// </summary>
/// <param name="data">Graph data to push onto the graph</param>
/// <param name="scope">Unqiue graph scope</param>
/// <param name="graphDataFormat">Specifies the graph data format</param>
/// <param name="queueCount">Number of items in the queue</param>
private static void UpdateSnaglWithLiveData(string data, string scope, GraphDataFormatBase graphDataFormat, int queueCount)
{
// Import the data
GraphManager.Instance.ImportLiveData(data, scope, graphDataFormat);
// Raise the LiveDataDequeued event
SnaglEventAggregator.DefaultInstance.GetEvent<LiveDataDequeuedEvent>().Publish(new LiveDataEventArgs(queueCount));
}