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Split design time support to a separate assembly #42

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lextm opened this Issue August 11, 2012 · 8 comments

3 participants

Lex Li Ryan Rastedt Yeechan Lu
Lex Li
Collaborator

DockPanel Suite assembly contains a reference to System.Design, and some classes are especially for design time support.

This prevents users from using it in a project that targets client profile (.NET 3.5/4).

We can split such design time support to a separate assembly.

I did the same for Crad's ActionList,

lextm/ActionListWinForms#9

Ryan Rastedt
Owner

Is System.Design truly required in the first place? It appears the only usage is in the DockPanel for the Designer attribute, however we're not actually setting a custom designer.

Yeechan Lu

I never use the Designer due to its limitations.

Lex Li
Collaborator

Is there any side effect if we remove [Designer(typeof(System.Windows.Forms.Design.ControlDesigner))] from DockPanel definition?

If no side effect, we might remove System.Design completely.

Ryan Rastedt
Owner

I believe the purpose is to prevent controls from being parented by the dockpanel via the designer. For example, currently if you drop a control on top of a dockpanel it will not be added to the dockpanel's controls. The designer attribute is overriding the PanelDesigner set on the base class, which will allow you to drop a control onto the dockpanel itself (as you could with any panel).

So the purpose of the designer attribute here is desired, although I wonder if it can be accomplished another way.

Lex Li
Collaborator

If that's the usage of that attribute we can change it from using typeof to using a string.

Ryan Rastedt
Owner

Ah yes, good call. That should work perfectly!

Lex Li
Collaborator

According to this page, we should be able to replace [Designer(typeof(System.Windows.Forms.Design.ControlDesigner))] with [Designer("System.Windows.Forms.Design.ControlDesigner, System.Design"))] and then remove System.Design from reference list,

http://archive.msdn.microsoft.com/WinFormsCustomCtrl

Can you test it? @roken

Ryan Rastedt
Owner

Looks good, you can check that in.

Ryan Rastedt roken closed this August 17, 2012
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