/// <summary>
/// Helper method for raising the <see cref="MergeRequested">Merge Requested</see> event and returning whether any of the Event Handlers cancelled the operation
/// </summary>
/// <returns>True if the operation can continue, false if it should be aborted</returns>
protected void RaiseMergeRequested(CancellableGraphEventArgs args)
{
CancellableGraphEventHandler d = this.MergeRequested;
if (d != null)
{
d(this, args);
}
}
/// <summary>
/// Creates a wrapper around the default Graph implementation, primarily required only for deserialization and requires that the caller call <see cref="WrapperGraph.AttachEventHandlers"/> to properly wire up event handling
/// </summary>
protected WrapperGraph()
{
this._g = new Graph();
// Create Event Handlers and attach to relevant events so the wrapper propogates events upwards
this.TripleAssertedHandler = new TripleEventHandler(this.OnTripleAsserted);
this.TripleRetractedHandler = new TripleEventHandler(this.OnTripleRetracted);
this.GraphChangedHandler = new GraphEventHandler(this.OnChanged);
this.GraphClearedHandler = new GraphEventHandler(this.OnCleared);
this.GraphMergedHandler = new GraphEventHandler(this.OnMerged);
this.GraphClearRequestedHandler = new CancellableGraphEventHandler(this.OnClearRequested);
this.GraphMergeRequestedHandler = new CancellableGraphEventHandler(this.OnMergeRequested);
}
/// <summary>
/// Helper method for raising the <see cref="MergeRequested">Merge Requested</see> event and returning whether any of the Event Handlers cancelled the operation.
/// </summary>
/// <returns>True if the operation can continue, false if it should be aborted.</returns>
protected bool RaiseMergeRequested()
{
CancellableGraphEventHandler d = MergeRequested;
if (d != null)
{
CancellableGraphEventArgs args = new CancellableGraphEventArgs(this);
d(this, args);
return(!args.Cancel);
}
else
{
return(true);
}
}
