Ability to enable/disable dragging of widgets from one panel to another panel

[GordonSmith]

Prevent the user from changing the rendered layout.

Typically used in conjunction with the new save/restore layout capability:

• Admin designs new layout and saves it to DB
• Layout is loaded for user - they should not be able to change it.

[sccolbert]

related to #225

[GordonSmith]

@sccolbert is the intention of Widget.Flag.DisallowLayout to indicate that Widget cannot be relocated?

[sccolbert]

Widget.Flag.DisallowLayout is used to prevent a layout from being installed on a widget. This is useful for leaf widgets (like TabBar) which should never have a layout installed on them.

Relevant links:
https://github.com/phosphorjs/phosphor/blob/master/packages/widgets/src/widget.ts#L227-L242
https://github.com/phosphorjs/phosphor/blob/master/packages/widgets/src/tabbar.ts#L63

[rmeshksar]

Hi,
Is there any progress or recommendation on this request. I would like to use DockPanel as it has save/restore feature, but I would like to limit the layout and what user can do. For example I would like to set the left side panel of the split panel fixed or not show tab bar is the tab panel has only one tab.

[sccolbert]

@rmeshksar The point of the DockPanel is to be user configurable, so placing limits on it would be antithetical (and also difficult to implement). You can, however, combine the DockPanel with other layouts to achieve what you want.