/// <summary>
/// Opens a new designer for the specified file, or returns an existing
/// editor for this file.
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
public IDesigner OpenDesigner(File file)
{
// Search through our existing designers to see if there's
// already a designer open for this file.
foreach (IDesigner d in this.m_Designers)
{
if (d.File.FileInfo.FullName == file.FileInfo.FullName)
{
if (this.DesignerRefocused != null)
{
this.DesignerRefocused(this, new DesignerEventArgs(d));
}
return(d);
}
}
// Ensure that FileInfo property is valid (if it is not, then we
// are dealing with a non-file).
if (file.FileInfo == null)
{
return(null);
}
// Detect the type of designer to create by the file's extension.
Type t = Central.Platform.GetDesignerTypeImplementing(Associations.GetDesignerType(file.FileInfo.Extension.Substring(1)));
if (t == null)
{
Central.Platform.UI.ShowMessage("There is no designer associated with this file type.", "No Designer", MessageBoxButtons.OK);
return(null);
}
// Invoke the constructor.
IDesigner ds = t.GetConstructor(new Type[] { typeof(File) }).Invoke(new object[] { file as object }) as IDesigner;
ds.Closed += (sender, e) =>
{
if (this.DesignerClosed != null)
{
this.DesignerClosed(this, new DesignerEventArgs(ds));
}
this.m_Designers.Remove(ds);
};
ds.Opened += (sender, e) =>
{
if (this.DesignerOpened != null)
{
this.DesignerOpened(this, new DesignerEventArgs(ds));
}
};
this.m_Designers.Add(ds);
if (this.DesignerCreated != null)
{
this.DesignerCreated(this, new DesignerEventArgs(ds));
}
return(ds);
}
