public void RemoveDesignSurface(DesignSurfaceUView surfaceToErase)
{
try
{
//- remove the TabPage which has the same name of
//- the RootComponent host by DesignSurface "surfaceToErase"
//- Note:
//- DesignSurfaceManager continues to reference the DesignSurface erased
//- that Designsurface continue to exist but it is no more reachable
//- this fact is usefull when generate new names for Designsurfaces just created
//- avoiding name clashing
var designHost = surfaceToErase.GetService(typeof(IDesignerHost)) as IDesignerHost;
string dsRootComponentName = designHost?.RootComponent.Site.Name;
TabPage tpToRemove = null;
foreach (TabPage tp in this.tbCtrlpDesigner.TabPages)
{
if (tp.Name == dsRootComponentName)
{
tpToRemove = tp;
break;
}
}
if (null != tpToRemove)
{
this.tbCtrlpDesigner.TabPages.Remove(tpToRemove);
}
//- now remove the DesignSurface
this.DesignSurfaceManager.DeleteDesignSurfaceUView(surfaceToErase);
//- finally the DesignSurfaceManager remove the DesignSurface
//- AND set as active DesignSurface the last one
//- therefore we set as active the last TabPage
this.tbCtrlpDesigner.SelectedIndex = this.tbCtrlpDesigner.TabPages.Count - 1;
}
catch (Exception exx)
{
Debug.WriteLine(exx.Message);
if (null != exx.InnerException)
{
Debug.WriteLine(exx.InnerException.Message);
}
throw;
}
}
//- Create the DesignSurface and the rootComponent (a .NET Control)
//- using IDesignSurfaceBase.CreateRootComponent()
//- if the alignmentMode doesn't use the GRID, then the gridSize param is ignored
//- Note:
//- the generics param is used to know which type of control to use as RootComponent
//- TT is requested to be derived from .NET Control class
public DesignSurfaceUView AddDesignSurface <TT>(int width, int height, Interface.AlignmentModeEnum alignmentMode)
where TT : Control
{
const string _signature_ = _name + @"::AddDesignSurface<>()";
if (!this)
{
throw new Exception(_signature_ + " - Exception: " + _name + " is not initialized! Please set the Property: IUDesigner::Toolbox before calling any methods!");
}
//- step.0
//- create a DesignSurface
DesignSurfaceUView surface = DesignSurfaceManager.CreateDesignSurfaceEx() as DesignSurfaceUView;
this.DesignSurfaceManager.ActiveDesignSurface = surface;
//- step.1
//- choose an alignment mode...
surface.UseOptionService(alignmentMode);
//- step.2
//- enable the UndoEngine
(surface.GetService(typeof(UndoEngine)) as UndoEngine).Enabled = true;
//- step.3
//- Select the service IToolboxService
//- and hook it to our ListBox
var tbox = surface.GetService(typeof(IToolboxService)) as ToolboxServiceImp;
//- we don't check if Toolbox is null because the very first check: if(!this)...
if (null != tbox)
{
tbox.CtrlToolbox = this.CtrlToolbox;
}
//- step.4
//- create the Root compoment, in these cases a Form
Control rootComponent = null;
//- cast to .NET Control because the TT object
//- has a constraint: to be a ".NET Control"
rootComponent = surface.CreateRootComponent(typeof(TT), DesignSurfaceManager.GetValidName(typeof(TT).Name), new Size(width, height)) as Control;
//- rename the Sited component
//- (because the user may add more then one Form
//- and every new Form will be called "Form1"
//- if we don't set its Name)
//rootComponent.Site.Name = this.DesignSurfaceManager.GetValidName(typeof(TT).Name);
//- step.5
//- enable the Drag&Drop on RootComponent
surface.EnableDragandDrop();
//- step.6
//- IComponentChangeService is marked as Non replaceable service
IComponentChangeService componentChangeService = (IComponentChangeService)(surface.GetService(typeof(IComponentChangeService)));
if (null != componentChangeService)
{
//- the Type "ComponentEventHandler Delegate" Represents the method that will
//- handle the ComponentAdding, ComponentAdded, ComponentRemoving, and ComponentRemoved
//- events raised for component-level events
componentChangeService.ComponentChanged += (Object sender, ComponentChangedEventArgs e) =>
{
// do nothing
};
componentChangeService.ComponentAdded += (Object sender, ComponentEventArgs e) =>
{
DesignSurfaceManager.UpdatePropertyGridHost(surface);
};
componentChangeService.ComponentRemoved += (Object sender, ComponentEventArgs e) =>
{
DesignSurfaceManager.UpdatePropertyGridHost(surface);
};
}
//- step.7
//- now set the Form::Text Property
//- (because it will be an empty string
//- if we don't set it)
if (!InitSurfaceText(surface, rootComponent, rootComponent.Site.Name + " (design mode)"))
{
return(null);
}
//- step.8
//- display the DesignSurface
AddSurfaceToNewTabPage(surface, rootComponent.Site.Name);
//- step.9
//- finally return the DesignSurface created to let it be modified again by user
DesignSurfaceManager.UpdatePropertyGridHost(surface);
return(surface);
}