/// <summary>
/// Call this method to intialize a CompileCustomNodeAsyncTask with an
/// EngineController and an GraphSyncData that is required to compile the
/// associated custom node.
/// </summary>
/// <param name="initParams">Input parameters required for custom node
/// graph updates.</param>
/// <returns>Returns true if GraphSyncData is not empty and that the
/// CompileCustomNodeAsyncTask should be scheduled for execution. Returns
/// false otherwise.</returns>
///
internal bool Initialize(CompileCustomNodeParams initParams)
{
if (initParams == null)
{
throw new ArgumentNullException("initParams");
}
engineController = initParams.EngineController;
graphSyncData = initParams.SyncData;
if (engineController == null)
{
throw new ArgumentNullException("engineController");
}
if (graphSyncData == null)
{
throw new ArgumentNullException("graphSyncData");
}
var added = graphSyncData.AddedSubtrees;
var deleted = graphSyncData.DeletedSubtrees;
var modified = graphSyncData.ModifiedSubtrees;
// Returns true if there is any actual data.
return((added != null && added.Count > 0) ||
(modified != null && modified.Count > 0) ||
(deleted != null && deleted.Count > 0));
}
/// <summary>
/// Call this method to intialize a CompileCustomNodeAsyncTask with an
/// EngineController and an GraphSyncData that is required to compile the
/// associated custom node.
/// </summary>
/// <param name="initParams">Input parameters required for custom node
/// graph updates.</param>
/// <returns>Returns true if GraphSyncData is not empty and that the
/// CompileCustomNodeAsyncTask should be scheduled for execution. Returns
/// false otherwise.</returns>
///
internal bool Initialize(CompileCustomNodeParams initParams)
{
if (initParams == null)
throw new ArgumentNullException("initParams");
engineController = initParams.EngineController;
graphSyncData = initParams.SyncData;
if (engineController == null)
throw new ArgumentNullException("engineController");
if (graphSyncData == null)
throw new ArgumentNullException("graphSyncData");
var added = graphSyncData.AddedSubtrees;
var deleted = graphSyncData.DeletedSubtrees;
var modified = graphSyncData.ModifiedSubtrees;
// Returns true if there is any actual data.
return ((added != null && added.Count > 0) ||
(modified != null && modified.Count > 0) ||
(deleted != null && deleted.Count > 0));
}
/// <summary>
/// DynamoModel calls this method prior to scheduling a graph update for
/// the home workspace. This method is called to schedule custom node
/// compilation since the home workspace update may depend on it. Any
/// updates to a CustomNodeDefinition will cause GraphSyncData to be added
/// to "pendingCustomNodeSyncData" queue.
/// </summary>
/// <param name="scheduler">The scheduler on which custom node compilation
/// task can be scheduled.</param>
///
internal void ProcessPendingCustomNodeSyncData(IScheduler scheduler)
{
while (pendingCustomNodeSyncData.Count > 0)
{
var initParams = new CompileCustomNodeParams
{
SyncData = pendingCustomNodeSyncData.Dequeue(),
EngineController = this
};
var compileTask = new CompileCustomNodeAsyncTask(scheduler);
if (compileTask.Initialize(initParams))
scheduler.ScheduleForExecution(compileTask);
}
}