On Monday, January 27, 2014 11:10:36 AM UTC-3, Dan Holmsand wrote:
> On Monday, January 27, 2014 2:30:57 PM UTC+1, ritchie turner wrote:
> > How i want to get an event after reagent is finished rendering a component.
> > I want to be able to query the dimensions of a component, e.g. to center a
> > dialog box component after I've rendered a new form into it.
>
> Yeah, that is hardly documented at all yet, I'm afraid...
>
> You can get React's lifecycle callbacks by attaching metadata to a component
> function, as is done in the todomvc demo:
>
> (def todo-edit (with-meta todo-input
> {:component-did-mount #(.focus (reagent/dom-node %))}))
>
> where todo-input is a component fun, and todo-edit a new one, but with the
> callback.
>
> React's callbacks are documented here:
>
> http://facebook.github.io/react/docs/component-specs.html
>
> In Reagent they get slightly different parameters (to avoid having to use
> this-as), and you can use dashed names instead of camelCase. The whole set
> looks like this:
>
> :get-initial-state (fn [this])
> :component-will-receive-props (fn [this new-props])
> :should-component-update (fn [this old-props new-props old-children
> new-children])
> :component-did-mount (fn [this])
> :component-did-update (fn [this old-props old-children])
> :component-will-unmount (fn [this])
>
> In your case, you'd want to use :component-did-mount, and possibly
> :component-did-update.
>
> Hope that helps,
>
> /dan
Thanks Dan that worked.
R
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