/// <summary>
/// Opens or creates a document at the given URI</summary>
/// <param name="uri">Document URI</param>
/// <returns>Document, or null if the document couldn't be opened or created</returns>
public IDocument Open(Uri uri)
{
DomNode node = null;
string filePath = uri.LocalPath;
string fileName = Path.GetFileName(filePath);
if (File.Exists(filePath))
{
// read existing document using standard XML reader
using (FileStream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
{
DomXmlReader reader = new DomXmlReader(m_schemaLoader);
node = reader.Read(stream, uri);
}
}
else
{
// create new document by creating a Dom node of the root type defined by the schema
node = new DomNode(Schema.eventSequenceType.Type, Schema.eventSequenceRootElement);
}
EventSequenceDocument document = null;
if (node != null)
{
// Initialize Dom extensions now that the data is complete
node.InitializeExtensions();
EventSequenceContext context = node.As <EventSequenceContext>();
ControlInfo controlInfo = new ControlInfo(Path.Combine(filePath, fileName),
StandardControlGroup.Center,
new DockContent(null, null), this);
context.ControlInfo = controlInfo;
// set document URI
document = node.As <EventSequenceDocument>();
document.Uri = uri;
context.Document = document;
// show the document editor
// This line requires references to System.Drawing and System.Windows.Forms. Would really like to remove those dependencies!
m_controlHostService.RegisterControl(context.View,
fileName,
"Event sequence document",
StandardControlGroup.Center,
Path.Combine(filePath, fileName),
this);
}
return(document);
}
private void UpdateControlInfo()
{
string filePath = Uri.LocalPath;
string fileName = Path.GetFileName(filePath);
if (Dirty)
{
fileName += "*";
}
EventSequenceContext context = this.As <EventSequenceContext>();
context.ControlInfo.Name = fileName;
context.ControlInfo.Description = filePath;
}
/// <summary>
/// Closes the document and removes any views of it from the UI</summary>
/// <param name="document">Document to close</param>
public void Close(IDocument document)
{
EventSequenceContext context = document.As <EventSequenceContext>();
m_controlHostService.UnregisterContent(context.View);
context.ControlInfo = null;
// close all active EditingContexts in the document
foreach (DomNode node in context.DomNode.Subtree)
{
foreach (EditingContext editingContext in node.AsAll <EditingContext>())
{
m_contextRegistry.RemoveContext(editingContext);
}
}
// close the document
m_documentRegistry.Remove(document);
}
private void contextRegistry_ActiveContextChanged(object sender, EventArgs e)
{
// make sure we're always tracking the most recently active EventSequenceContext
EventSequenceContext context = m_contextRegistry.GetMostRecentContext <EventSequenceContext>();
if (m_eventSequenceContext != context)
{
if (m_eventSequenceContext != null)
{
m_eventSequenceContext.SelectionChanged -= eventSequenceContext_SelectionChanged;
}
m_eventSequenceContext = context;
if (m_eventSequenceContext != null)
{
// track the most recently active EventSequenceContext's selection to get the most recently
// selected event.
m_eventSequenceContext.SelectionChanged += eventSequenceContext_SelectionChanged;
}
UpdateEvent();
}
}
/// <summary>
/// Makes the document visible to the user</summary>
/// <param name="document">Document to show</param>
public void Show(IDocument document)
{
EventSequenceContext context = document.As <EventSequenceContext>();
m_controlHostService.Show(context.View);
}
