/// <summary>
/// Called on selection of a ToolboxItem. (A selection is a double-click, or pressing Enter).
/// The selection cannot be null; this method is not called when the "Pointer" mode is selected.
/// Upon double-click, a single-click is fired first, followed by a double-click. I.e. OnToolboxSelectionChanged
/// will be called, followed by OnToolboxitemSelected (if the selected item is not "Pointer").
/// </summary>
/// <param name="toolboxItem">Selected toolbox item.</param>
public override bool OnToolboxItemSelected(DslDesign::ModelingToolboxItem toolboxItem)
{
// Save the current sticky item choice.
this.stickyToolboxItemId = toolboxItem.Id;
// Return true to indicate that the toolbox selection action is handled. Otherwise the old
// behavior of creating new element on double-click will be carried out.
return true;
}
private string stickyToolboxItemId = null; // Id of the last-selected sticky toolbox item.
/// <summary>
/// Called when the selection on toolbox changed (through a single-click, or pressing up/down arrow keys).
/// Base implementation does nothing.
/// Upon double-click, a single-click is fired first, followed by a double-click. I.e. OnToolboxSelectionChanged
/// will be called, followed by OnToolboxitemSelected (if the selected item is not "Pointer").
/// </summary>
/// <param name="toolboxItem">New toolbox item with selection. This can be null, if "Pointer" mode is selected.</param>
public override void OnToolboxSelectionChanged(DslDesign::ModelingToolboxItem toolboxItem)
{
base.OnToolboxSelectionChanged(toolboxItem);
// When a toolbox item is single-clicked, we need to turn off the sticky mode.
this.stickyToolboxItemId = null;
if (this.ActiveDiagramView != null)
{
DslDiagrams::CreateAction createAction = this.ActiveDiagramView.ActiveMouseAction as DslDiagrams::CreateAction;
if (createAction != null)
{
createAction.StickyMode = false;
}
else
{
DslDiagrams::ConnectAction connectAction = this.ActiveDiagramView.ActiveMouseAction as DslDiagrams::ConnectAction;
if (connectAction != null)
{
connectAction.StickyMode = false;
}
}
}
}