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Start to rework cursor

This commit is contained in:
Dan Holmsand 2015-09-14 14:03:32 +02:00
parent d362e0a26c
commit 3acfa689d9
1 changed files with 18 additions and 27 deletions
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35
src/reagent/ratom.cljs
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@ -154,7 +154,7 @@
;;; cursor
(deftype RCursor [ratom path ^:mutable reaction]
(deftype RCursor [ratom path setter ^:mutable reaction]
IAtom
IReactiveAtom
@ -169,12 +169,8 @@
(if (nil? reaction)
(set! reaction
(if (satisfies? IDeref ratom)
(make-reaction #(get-in @ratom path)
:on-set (if (= path [])
#(reset! ratom %2)
#(swap! ratom assoc-in path %2)))
(make-reaction #(ratom path)
:on-set #(ratom path %2))))
(make-reaction #(get-in @ratom path) :on-set setter)
(make-reaction #(ratom path) :on-set setter)))
reaction))
(_peek [this]
@ -191,13 +187,13 @@
ISwap
(-swap! [a f]
(-swap! (._reaction a) f))
(-reset! a (f (._peek a))))
(-swap! [a f x]
(-swap! (._reaction a) f x))
(-reset! a (f (._peek a) x)))
(-swap! [a f x y]
(-swap! (._reaction a) f x y))
(-reset! a (f (._peek a) x y)))
(-swap! [a f x y more]
(-swap! (._reaction a) f x y more))
(-reset! a (apply f (._peek a) x y more)))
IPrintWithWriter
(-pr-writer [a writer opts]
@ -218,22 +214,17 @@
(defn cursor
[src path]
(if (satisfies? IDeref path)
(do
(warn "Calling cursor with an atom as the second arg is "
"deprecated, in (cursor "
src " " (pr-str path) ")")
(assert (satisfies? IReactiveAtom path)
(str "src must be a reactive atom, not "
(pr-str path)))
(RCursor. path src nil))
(do
(assert (or (satisfies? IReactiveAtom src)
(and (ifn? src)
(not (vector? src))))
(str "src must be a reactive atom or a function, not "
(pr-str src)))
(RCursor. src path nil))))
(let [s (if (satisfies? IDeref src)
(if (= path [])
#(reset! src %2)
#(swap! src assoc-in path %2))
#(src path %2))]
(RCursor. src path s nil)))