Basic support for DataContext={resource: ...} #1392
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problem was that that BindingHelper.FindDataContextTarget assumed there was one more data context layer since we used set data context type and DataContext on different controls. Because of that command client-side and server-side data context paths didn't match. Technically, this is a glitch of BindingHelper, not HierarchyRepeater, but "fixing" BindingHelper will break many things and it's hopefully going to be done in #1392
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problem was that that BindingHelper.FindDataContextTarget assumed there was one more data context layer since we used set data context type and DataContext on different controls. Because of that command client-side and server-side data context paths didn't match. Technically, this is a glitch of BindingHelper, not HierarchyRepeater, but "fixing" BindingHelper will break many things and it's hopefully going to be done in #1392
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problem was that that BindingHelper.FindDataContextTarget assumed there was one more data context layer since we used set data context type and DataContext on different controls. Because of that command client-side and server-side data context paths didn't match. Technically, this is a glitch of BindingHelper, not HierarchyRepeater, but "fixing" BindingHelper will break many things and it's hopefully going to be done in #1392
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Part is taken from #1392 which won't be merged for a while.
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Part is taken from #1392 which won't be merged for a while.
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This functionality is essential for server-side only rendering, but this patch is only the groundwork - we still need to add support to Repeater and possibly other controls. The design is fairly simple - we allow resource binding in data context and track that this data context does not exist client-side (see the new ServerSideOnly property). Using this server-only data context is not allowed in value and staticCommand bindings. Note that using a value binding inside the resource-bound control is allowed, it just cannot reference `_this`. Since the context does not exist client-side, we then translate _parent into $data instead of $parent.
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This functionality allows server-only rendering - i.e. building static HTML based on viewmodel which is not necessarily sent to the client.
The design is fairly simple - we allow resource binding
in data context and track that this data context does
not exist client-side (see the new
ServerSideOnlyproperty).Using this server-only data context is not allowed in value
and
staticCommandbindings. Note that using a value bindinginside the resource-bound control is allowed, it just cannot
reference
_this. Since the context does not exist client-side,we then translate
_parentinto$datainstead of$parent.Repeater, GridView and HierarchyRepeater should all support this.