/// <summary>
/// Called to determine whether the Paste menu command should be enabled.
/// </summary>
/// <param name="cmd"></param>
protected override void ProcessOnStatusPasteCommand(MenuCommand cmd)
{
CircuitsDocView docView = this.CurrentModelingDocView as CircuitsDocView;
Diagram diagram = docView.CurrentDiagram;
cmd.Visible = true;
cmd.Enabled = diagram.ElementOperations.CanMerge(diagram, System.Windows.Forms.Clipboard.GetDataObject());
}
internal WrappingForm(CircuitsDocView docView, Control content)
: this()
{
// Insert the DSL diagram into the Panel we've provided for it:
DiagramPanel.Controls.Add(content);
// Allows access to DSL from the form:
this.docView = docView;
}
/// <summary>
/// Called when the user presses CTRL+V or chooses Paste on the diagram.
/// This method assumes we only want to paste things onto the diagram
/// - not onto anything contained in the diagram.
/// The base method pastes in a free space on the diagram.
/// But if the menu was used to invoke paste, we want to paste in the cursor position.
/// </summary>
protected override void ProcessOnMenuPasteCommand()
{
// If true, this method assumes we're only pasting on the diagram.
// Anything selected will be deselected, and paste will be onto diagram.
const bool pasteOnlyOnDiagram = true;
CircuitsDocView docView = this.CurrentModelingDocView as CircuitsDocView;
// Retrieve data from clipboard:
System.Windows.Forms.IDataObject data = System.Windows.Forms.Clipboard.GetDataObject();
Diagram diagram = docView.CurrentDiagram;
if (diagram == null)
{
return;
}
if (!docView.IsContextMenuShowing)
{
// User hit CTRL+V - just use base method.
// Deselect anything that's selected, otherwise
// pasted item will be incompatible:
if (pasteOnlyOnDiagram && !this.IsDiagramSelected())
{
docView.SelectObjects(1, new object[] { diagram }, 0);
}
// Paste into a convenient spare space on diagram:
base.ProcessOnMenuPasteCommand();
}
else
{
// User right-clicked - paste at mouse position.
// Utility class:
DesignSurfaceElementOperations op = diagram.ElementOperations;
ShapeElement pasteTarget = pasteOnlyOnDiagram ? diagram : this.CurrentSelection.OfType <ShapeElement>().First();
// Check whether what's in the paste buffer is acceptable on the target.
if (op.CanMerge(pasteTarget, data))
{
// Although op.Merge would be a no-op if CanMerge failed, we check CanMerge first
// so that we don't create an empty transaction (after which Undo would be no-op).
using (Transaction t = diagram.Store.TransactionManager.BeginTransaction("paste"))
{
PointD place = docView.ContextMenuMousePosition;
op.Merge(pasteTarget, data, PointD.ToPointF(place));
t.Commit();
}
}
}
}
/// <summary>
/// Called by the shell to ask the editor to create a new view object.
/// </summary>
protected override DslShell::ModelingDocView CreateDocView(DslShell::ModelingDocData docData, string physicalView, out string editorCaption)
{
// Create the view type supported by this editor.
editorCaption = "blah";
CircuitsDocView dv = new CircuitsDocView(docData, this.ServiceProvider);
/*foreach (ComponentModel cm in (docData as CircuitsDocData).ModelingDocStore.Store.ElementDirectory.FindElements<ComponentModel>())
* {
* editorCaption += cm.Name;
* }
*/
return(dv);
}
