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primitives.cljc
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primitives.cljc
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(ns fulcro.client.primitives
#?(:cljs (:require-macros fulcro.client.primitives))
(:refer-clojure :exclude #?(:clj [deftype replace var? force]
:cljs [var? key replace force]))
(:require
#?@(:clj [clojure.main
[cljs.core :refer [deftype specify! this-as js-arguments]]
[clojure.reflect :as reflect]
[cljs.util]]
:cljs [[goog.string :as gstring]
[cljsjs.react]
[goog.object :as gobj]])
fulcro-css.css
[clojure.core.async :as async]
[clojure.set :as set]
[fulcro.history :as hist]
[fulcro.logging :as log]
[fulcro.tempid :as tempid]
[fulcro.transit :as transit]
[clojure.zip :as zip]
[fulcro.client.impl.data-targeting :as targeting]
[fulcro.client.impl.protocols :as p]
[fulcro.client.impl.parser :as parser]
[fulcro.util :as util]
[clojure.walk :refer [prewalk]]
[clojure.string :as str]
[clojure.spec.alpha :as s]
#?(:clj
[clojure.future :refer :all])
[cognitect.transit :as t])
#?(:clj
(:import [java.io Writer])))
(declare app-state app-root tempid? normalize-query focus-query* ast->query query->ast transact! remove-root! component?
integrate-ident)
(defprotocol Ident
(ident [this props] "Return the ident for this component"))
(defprotocol IQuery
(query [this] "Return the component's unbound static query"))
(defprotocol InitialAppState
(initial-state [clz params] "Get the initial state to be used for this component in app state. You are responsible for composing these together."))
(defn has-initial-app-state?
#?(:cljs {:tag boolean})
[component]
#?(:clj (if (fn? component)
(some? (-> component meta :initial-state))
(let [class (cond-> component (component? component) class)]
(extends? InitialAppState class)))
:cljs (implements? InitialAppState component)))
(defn has-ident?
#?(:cljs {:tag boolean})
[component]
#?(:clj (if (fn? component)
(some? (-> component meta :ident))
(let [class (cond-> component (component? component) class)]
(extends? Ident class)))
:cljs (implements? Ident component)))
(defn has-query?
#?(:cljs {:tag boolean})
[component]
#?(:clj (if (fn? component)
(some? (-> component meta :query))
(let [class (cond-> component (component? component) class)]
(extends? IQuery class)))
:cljs (implements? IQuery component)))
(defn get-initial-state
"Get the initial state of a component. Needed because calling the protocol method from a defui component in clj will not work as expected."
[class params]
(some->
#?(:clj (when-let [initial-state (-> class meta :initial-state)]
(initial-state class params))
:cljs (when (implements? InitialAppState class)
(initial-state class params)))
(with-meta {:computed true})))
(defn computed-initial-state?
"Returns true if the given initial state was computed from a call to get-initial-state."
[s]
(and (map? s) (some-> s meta :computed)))
(s/def ::remote keyword?)
(s/def ::ident (s/or :missing nil? :ident util/ident?))
(s/def ::query vector?)
(s/def ::transaction (s/every #(or (keyword? %) (util/mutation? %))
:kind vector?))
(s/def ::pessimistic? boolean?)
(s/def ::tempids (s/map-of tempid? any?))
(defn get-history
"pass-through function for getting history, that enables testing (cannot mock protocols easily)"
[reconciler]
(when reconciler
(p/get-history reconciler)))
(defn add-basis-time* [{:keys [children]} props time]
(if (map? props)
(if (seq children)
(let [children (if (= :union (-> children first :type))
(apply concat (->> children first :children (map :children)))
children)]
(-> (into props
(comp
(filter #(contains? props (:key %)))
(map (fn [{:keys [key query] :as ast}]
(let [x (get props key)
ast (cond-> ast
(= '... query)
(assoc :children children)
(pos-int? query)
(assoc :children (mapv #(cond-> %
(pos-int? (:query %))
(update :query dec))
children)))]
[key
(if (sequential? x)
(mapv #(add-basis-time* ast % time) x)
(add-basis-time* ast x time))]))))
children)
(vary-meta assoc ::time time)))
(vary-meta props assoc ::time time))
props))
(defn add-basis-time
"Recursively add the given basis time to all of the maps in the props. This is part of the UI refresh optimization
algorithm. Children that refresh in isolation could be mis-drawn if a parent subsequently does a re-render without
a query (e.g. local state change). The basis times allow us to detect and avoid that."
([props time]
(prewalk (fn [ele]
(if (map? ele)
(vary-meta ele assoc ::time time)
ele)) props))
([q props time]
(add-basis-time* (query->ast q) props time)))
(defn get-basis-time
"Returns the basis time from the given props, or ::unset if not available."
[props] (or (-> props meta ::time) :unset))
(defn get-current-time
"get the current basis time from the reconciler. Used instead of calling the protocol method `basis-t` to facilitate testing."
[reconciler] (p/basis-t reconciler))
(defn collect-statics
"Collect the static declarations from the defui."
[dt]
(letfn [(split-on-static [forms]
(split-with (complement '#{static}) forms))
(split-on-symbol [forms]
(split-with (complement symbol?) forms))]
(loop [dt (seq dt) dt' [] statics {:fields {} :protocols []}]
(if dt
(let [[pre [_ sym & remaining :as post]] (split-on-static dt)
dt' (into dt' pre)]
(if (seq post)
(cond
(= sym 'field)
(let [[field-info dt] (split-at 2 remaining)]
(recur (seq dt) dt'
(update-in statics [:fields] conj (vec field-info))))
(symbol? sym)
(let [[protocol-info dt] (split-on-symbol remaining)]
(recur (seq dt) dt'
(update-in statics [:protocols]
into (concat [sym] protocol-info))))
:else (throw #?(:clj (IllegalArgumentException. "Malformed static")
:cljs (js/Error. "Malformed static"))))
(recur nil dt' statics)))
{:dt dt' :statics statics}))))
(defn validate-statics [dt]
(when-let [invalid (some #{"Ident" "IQuery"}
(map #(-> % str (str/split #"/") last)
(filter symbol? dt)))]
(throw
#?(:clj (IllegalArgumentException.
(str invalid " protocol declaration must appear with `static`."))
:cljs (js/Error.
(str invalid " protocol declaration must appear with `static`."))))))
(def lifecycle-sigs
'{initLocalState [this]
shouldComponentUpdate [this next-props next-state]
componentWillReceiveProps [this next-props]
componentWillUpdate [this next-props next-state]
componentDidUpdate [this prev-props prev-state]
componentWillMount [this]
componentDidMount [this]
componentWillUnmount [this]
render [this]
;; react 16
componentDidCatch [this error info]
UNSAFE_componentWillReceiveProps [this next-props]
UNSAFE_componentWillUpdate [this next-props next-state]
UNSAFE_componentWillMount [this]
getSnapshotBeforeUpdate [this prev-props prev-state]
;; STATIC...no access to THIS
getDerivedStateFromProps [props state]})
(defn- validate-sig [[name sig :as method]]
(let [required-signature (get lifecycle-sigs name)]
(assert
(<= (count required-signature) (count sig)) ; allow additional arg (context or snapshot)
(str "Invalid signature for " name " got " sig ", need " required-signature))))
#?(:clj
(def reshape-map-clj
{:reshape
{'render
(fn [[name [this :as args] & body]]
`(~name [this#]
(let [~this this#]
(binding [fulcro.client.primitives/*reconciler* (fulcro.client.primitives/get-reconciler this#)
fulcro.client.primitives/*depth* (inc (fulcro.client.primitives/depth this#))
fulcro.client.primitives/*shared* (fulcro.client.primitives/shared this#)
fulcro.client.primitives/*instrument* (fulcro.client.primitives/instrument this#)
fulcro.client.primitives/*parent* this#]
(let [ret# (do ~@body)
props# (:props this#)]
(when-not @(:fulcro$mounted? props#)
(swap! (:fulcro$mounted? props#) not))
ret#)))))
'componentDidMount
(fn [[name [this :as args] & body]]
`(~name [this#]
(let [~this this#
reconciler# (fulcro.client.primitives/get-reconciler this#)
indexer# (get-in reconciler# [:config :indexer])]
(when-not (nil? indexer#)
(fulcro.client.impl.protocols/index-component! indexer# this#))
~@body)))}
:defaults
`{~'initLocalState
([this#])
~'componentWillMount
([this#]
(let [reconciler# (fulcro.client.primitives/get-reconciler this#)
lifecycle# (get-in reconciler# [:config :lifecycle])
indexer# (get-in reconciler# [:config :indexer])]
(when-not (nil? lifecycle#)
(lifecycle# this# :mount))
(when-not (nil? indexer#)
(fulcro.client.impl.protocols/index-component! indexer# this#))))
~'render
([this#])}}))
(let [will-receive-props (fn [[name [this next-props :as args] & body]]
`(~name [this# next-props#]
(let [~this this#
~next-props (goog.object/get next-props# "fulcro$value")]
~@body)))
will-update (fn [[name [this next-props next-state :as args] & body]]
`(~name [this# next-props# next-state#]
(let [~this this#
~next-props (goog.object/get next-props# "fulcro$value")
~next-state (goog.object/get next-state# "fulcro$state")]
~@body)))]
(def reshape-map
{:reshape
{'initLocalState
(fn [[name [this :as args] & body]]
`(~name ~args
(let [ret# (do ~@body)]
(cljs.core/js-obj "fulcro$state" ret#))))
'componentWillReceiveProps will-receive-props
'UNSAFE_componentWillReceiveProps will-receive-props
'componentWillUpdate will-update
'UNSAFE_componentWillUpdate will-update
'componentDidUpdate (fn [[name [this prev-props prev-state & optional :as args] & body]]
(let [snapshot-sym (if (symbol? (first optional)) (first optional) (gensym "snapshot"))]
`(~name [this# prev-props# prev-state# snapshot#]
(let [~this this#
~snapshot-sym snapshot#
~prev-props (goog.object/get prev-props# "fulcro$value")
~prev-state (goog.object/get prev-state# "fulcro$state")]
(when (cljs.core/implements? fulcro.client.primitives/Ident this#)
(let [ident# (fulcro.client.primitives/ident this# ~prev-props)
next-ident# (fulcro.client.primitives/ident this# (fulcro.client.primitives/props this#))]
(when (not= ident# next-ident#)
(let [idxr# (get-in (fulcro.client.primitives/get-reconciler this#) [:config :indexer])]
(when-not (nil? idxr#)
(swap! (:indexes idxr#)
(fn [indexes#]
(-> indexes#
(update-in [:ref->components ident#] disj this#)
(update-in [:ref->components next-ident#] (fnil conj #{}) this#)))))))))
~@body))))
'componentDidMount (fn [[name [this :as args] & body]]
`(~name [this#]
(let [~this this#
reconciler# (fulcro.client.primitives/get-reconciler this#)
lifecycle# (get-in reconciler# [:config :lifecycle])
indexer# (get-in reconciler# [:config :indexer])]
(goog.object/set this# "fulcro$mounted" true)
(when-not (nil? indexer#)
(fulcro.client.impl.protocols/index-component! indexer# this#))
(when lifecycle#
(lifecycle# this# :mount))
~@body)))
'componentWillUnmount (fn [[name [this :as args] & body]]
`(~name [this#]
(let [~this this#
reconciler# (fulcro.client.primitives/get-reconciler this#)
lifecycle# (get-in reconciler# [:config :lifecycle])
cfg# (:config reconciler#)
st# (:state cfg#)
indexer# (:indexer cfg#)]
(goog.object/set this# "fulcro$mounted" false)
(when (and (not (nil? st#))
(get-in @st# [:fulcro.client.primitives/queries this#]))
(swap! st# update-in [:fulcro.client.primitives/queries] dissoc this#))
(when lifecycle#
(lifecycle# this# :unmount))
(when indexer#
(fulcro.client.impl.protocols/drop-component! indexer# this#))
~@body)))
'shouldComponentUpdate (fn [[name [this next-props next-state :as args] & body]]
`(~name [this# next-props# next-state#]
(let [~this this#
~next-props (goog.object/get next-props# "fulcro$value")
~next-state (goog.object/get next-state# "fulcro$state")]
~@body)))
'getSnapshotBeforeUpdate (fn [[name [this prev-props prev-state :as args] & body]]
`(~name [this# prev-props# prev-state#]
(let [~this this#
~prev-props (goog.object/get prev-props# "fulcro$value")
~prev-state (goog.object/get prev-state# "fulcro$state")]
~@body)))
'render
(fn [[name [this :as args] & body]]
`(~name [this#]
(let [~this this#]
(binding [fulcro.client.primitives/*reconciler* (fulcro.client.primitives/get-reconciler this#)
fulcro.client.primitives/*depth* (inc (fulcro.client.primitives/depth this#))
fulcro.client.primitives/*shared* (fulcro.client.primitives/shared this#)
fulcro.client.primitives/*instrument* (fulcro.client.primitives/instrument this#)
fulcro.client.primitives/*parent* this#]
~@body))))}
:defaults
`{~'shouldComponentUpdate
;; Detect if props/state or children changed
([this# next-props# next-state#]
(if fulcro.client.primitives/*blindly-render*
true
(let [next-children# (. next-props# -children)
next-props# (goog.object/get next-props# "fulcro$value")
current-props# (fulcro.client.primitives/props this#)
props-changed?# (not= current-props# next-props#)
next-state# (goog.object/get next-state# "fulcro$state")
state-changed?# (and (.. this# ~'-state)
(not= (goog.object/get (. this# ~'-state) "fulcro$state")
next-state#))
children-changed?# (not= (.. this# -props -children) next-children#)]
(or props-changed?# state-changed?# children-changed?#))))
~'componentDidUpdate
;; Update index of component when its ident changes
([this# prev-props# prev-state#]
(let [prev-props# (goog.object/get prev-props# "fulcro$value")]
(when (cljs.core/implements? fulcro.client.primitives/Ident this#)
(let [ident# (fulcro.client.primitives/ident this# prev-props#)
next-ident# (fulcro.client.primitives/ident this# (fulcro.client.primitives/props this#))]
(when (not= ident# next-ident#)
(let [idxr# (get-in (fulcro.client.primitives/get-reconciler this#) [:config :indexer])]
(when-not (nil? idxr#)
(swap! (:indexes idxr#)
(fn [indexes#]
(-> indexes#
(update-in [:ref->components ident#] disj this#)
(update-in [:ref->components next-ident#] (fnil conj #{}) this#)))))))))))
~'componentDidMount
;; Add the component to the indexer when it mounts
([this#]
(goog.object/set this# "fulcro$mounted" true)
(let [indexer# (get-in (fulcro.client.primitives/get-reconciler this#) [:config :indexer])]
(when-not (nil? indexer#)
(fulcro.client.impl.protocols/index-component! indexer# this#))))
~'componentWillUnmount
;; Remove the component from the indexer, and remove any dynamic queries for it
([this#]
(let [r# (fulcro.client.primitives/get-reconciler this#)
cfg# (:config r#)
st# (:state cfg#)
indexer# (:indexer cfg#)]
(goog.object/set this# "fulcro$mounted" false)
;; FIXME: WRONG...queries are not keyed by instance anymore (small possible memory leak)
(when (and (not (nil? st#))
(get-in @st# [:fulcro.client.primitives/queries this#]))
(swap! st# update-in [:fulcro.client.primitives/queries] dissoc this#))
(when-not (nil? indexer#)
(fulcro.client.impl.protocols/drop-component! indexer# this#))))}}))
(defn reshape [dt {:keys [reshape defaults]}]
(letfn [(reshape* [x]
(if (and (sequential? x)
(contains? reshape (first x)))
(let [reshapef (get reshape (first x))]
(validate-sig x)
(reshapef x))
x))
(add-defaults-step [ret [name impl]]
(if-not (some #{name} (map first (filter seq? ret)))
(let [[before [p & after]] (split-with (complement '#{Object}) ret)]
(into (conj (vec before) p (cons name impl)) after))
ret))
(add-defaults [dt]
(reduce add-defaults-step dt defaults))
(add-object-protocol [dt]
(if-not (some '#{Object} dt)
(conj dt 'Object)
dt))]
(->> dt (map reshape*) vec add-object-protocol add-defaults)))
#?(:clj (defn extract-static-methods [protocols]
(letfn [(add-protocol-method [existing-methods method]
(let [nm (first method)
new-arity (rest method)
k (keyword nm)
existing-method (get existing-methods k)]
(if existing-method
(let [single-arity? (vector? (second existing-method))
existing-arities (if single-arity?
(list (rest existing-method))
(rest existing-method))]
(assoc existing-methods k (conj existing-arities new-arity 'fn)))
(assoc existing-methods k (list 'fn new-arity)))))]
(when-not (empty? protocols)
(let [result (->> protocols
(filter #(not (symbol? %)))
(reduce
(fn [r impl] (add-protocol-method r impl))
{}))]
(if (contains? result :params)
result
(assoc result :params '(fn [this]))))))))
#?(:clj
(defn defui*-clj [name forms]
(let [docstring (when (string? (first forms))
(first forms))
forms (cond-> forms
docstring rest)
{:keys [dt statics]} (collect-statics forms)
[other-protocols obj-dt] (split-with (complement '#{Object}) dt)
klass-name (symbol (str name "_klass"))
lifecycle-method-names (set (keys lifecycle-sigs))
{obj-dt false non-lifecycle-dt true} (group-by
(fn [x]
(and (sequential? x)
(not (lifecycle-method-names (first x)))))
obj-dt)
class-methods (extract-static-methods (:protocols statics))]
`(do
~(when-not (empty? non-lifecycle-dt)
`(defprotocol ~(symbol (str name "_proto"))
~@(map (fn [[m-name args]] (list m-name args)) non-lifecycle-dt)))
(declare ~name)
(defrecord ~klass-name [~'state ~'refs ~'props ~'children]
;; TODO: non-lifecycle methods defined in the JS prototype - António
fulcro.client.impl.protocols/IReactLifecycle
~@(rest (reshape obj-dt reshape-map-clj))
~@other-protocols
~@(:protocols statics)
~@(when-not (empty? non-lifecycle-dt)
(list* (symbol (str name "_proto"))
non-lifecycle-dt))
fulcro.client.impl.protocols/IReactComponent
(~'-render [this#]
(p/componentWillMount this#)
(p/render this#)))
(defmethod clojure.core/print-method ~(symbol (str (munge *ns*) "." klass-name))
[o# ^Writer w#]
(.write w# (str "#object[" (ns-name *ns*) "/" ~(str name) "]")))
(let [c# (fn ~name [state# refs# props# children#]
(~(symbol (str (munge *ns*) "." klass-name ".")) state# refs# props# children#))]
(def ~(with-meta name
(merge (meta name)
(when docstring
{:doc docstring})))
(with-meta c#
(merge {:component c#
:component-ns (ns-name *ns*)
:component-name ~(str name)}
~class-methods))))))))
(defn defui*
([name form] (defui* name form nil))
([name forms env]
(letfn [(field-set! [obj [field value]]
`(set! (. ^js ~obj ~(symbol (str "-" field))) ~value))]
(let [docstring (when (string? (first forms))
(first forms))
forms (cond-> forms
docstring rest)
{:keys [dt statics]} (collect-statics forms)
_ (validate-statics dt)
fqn (if env
(symbol (-> env :ns :name str) (str name))
name)
ctor `(defn ~(with-meta name
(merge {:jsdoc ["@constructor" "@nocollapse"]}
(meta name)
(when docstring
{:doc docstring})))
[]
(this-as this#
(.apply js/React.Component this# (js-arguments))
(if-not (nil? (.-initLocalState ^js this#))
(set! (.-state this#) (.initLocalState ^js this#))
(set! (.-state this#) (cljs.core/js-obj)))
this#))
set-react-proto! `(set! (.-prototype ~name)
(goog.object/clone js/React.Component.prototype))
ctor (if (-> name meta :once)
`(when-not (cljs.core/exists? ~name)
~ctor
~set-react-proto!)
`(do
~ctor
~set-react-proto!))
display-name (if env
(str (-> env :ns :name) "/" name)
'js/undefined)]
`(do
~ctor
(specify! (.-prototype ~name) ~@(reshape dt reshape-map))
(set! (.. ~name -prototype -constructor) ~name)
(set! (.. ~name -prototype -constructor -displayName) ~display-name)
(set! (.-fulcro$isComponent ^js (.-prototype ^js ~name)) true)
~@(map #(field-set! name %) (:fields statics))
(specify! ~name
~@(mapv #(cond-> %
(symbol? %) (vary-meta assoc :static true)) (:protocols statics)))
(specify! (. ~name ~'-prototype) ~@(:protocols statics))
(set! (.-cljs$lang$type ~name) true)
(set! (.-cljs$lang$ctorStr ~name) ~(str fqn))
(set! (.-cljs$lang$ctorPrWriter ~name)
(fn [this# writer# opt#]
(cljs.core/-write writer# ~(str fqn)))))))))
(defmacro defui [name & forms]
(if (boolean (:ns &env))
(defui* name forms &env)
#?(:clj (defui*-clj name forms))))
(defmacro ui
"Declare an anonymous UI component. If the first argument is a keyword, then it is treated
as the React version (defaults to :v15)."
[& forms]
(let [t (with-meta (gensym "ui_") {:anonymous true})]
`(do (defui ~t ~@forms) ~t)))
;; =============================================================================
;; Globals & Dynamics
(def roots (atom {}))
(def ^{:dynamic true} *raf* nil)
(def ^{:dynamic true} *reconciler* nil)
(def ^{:dynamic true} *parent* nil)
(def ^{:dynamic true} *blindly-render* false) ; when true: shouldComponentUpdate will return true even if their data/state hasn't changed
(def ^{:dynamic true} *shared* nil)
(def ^{:dynamic true} *instrument* nil)
(def ^{:dynamic true} *depth* 0)
#?(:clj
(defn- munge-component-name [x]
(let [ns-name (-> x meta :component-ns)
cl-name (-> x meta :component-name)]
(munge
(str (str/replace (str ns-name) "." "$") "$" cl-name)))))
#?(:clj
(defn- compute-react-key [cl props]
(when-let [idx (-> props meta ::parser/data-path)]
(str (munge-component-name cl) "_" idx))))
#?(:cljs
(defn- compute-react-key [cl props]
(if-let [rk (:react-key props)]
rk
(if-let [idx (-> props meta ::parser/data-path)]
(str (. cl -name) "_" idx)
js/undefined))))
(defn component?
"Returns true if the argument is a component."
#?(:cljs {:tag boolean})
[x]
(if-not (nil? x)
#?(:clj (or (instance? fulcro.client.impl.protocols.IReactComponent x)
(satisfies? p/IReactComponent x))
:cljs (true? (.-fulcro$isComponent ^js x)))
false))
#?(:clj
(defn react-type
"Returns the component type, regardless of whether the component has been
mounted"
[component]
{:pre [(component? component)]}
(let [[klass-name] (str/split (reflect/typename (type component)) #"_klass")
last-idx-dot (.lastIndexOf klass-name ".")
ns (clojure.main/demunge (subs klass-name 0 last-idx-dot))
c (subs klass-name (inc last-idx-dot))]
@(or (find-var (symbol ns c))
(find-var (symbol ns (clojure.main/demunge c)))))))
#?(:cljs
(defn react-type
"Returns the component type, regardless of whether the component has been
mounted"
[x]
(or (gobj/get x "type") (type x))))
(defn- state [c]
{:pre [(component? c)]}
(.-state c))
(defn- get-raw-react-prop
"PRIVATE: Do not use. GET a RAW react prop"
[c k]
#?(:clj (get (:props c) k)
:cljs (gobj/get (.-props c) k)))
(defn reconciler?
"Returns true if x is a reconciler."
#?(:cljs {:tag boolean})
[x]
#?(:cljs (implements? p/IReconciler x)
:clj (or (instance? p/IReconciler x)
(satisfies? p/IReconciler x))))
(defn get-indexer
"PRIVATE: Get the indexer associated with the reconciler."
[reconciler]
{:pre [(reconciler? reconciler)]}
(-> reconciler :config :indexer))
(defn- sift-idents [res]
(let [{idents true rest false} (group-by #(vector? (first %)) res)]
[(into {} idents) (into {} rest)]))
(defn get-reconciler
[c]
{:pre [(component? c)]}
(get-raw-react-prop c #?(:clj :fulcro$reconciler
:cljs "fulcro$reconciler")))
(defn- parent
"Returns the parent component."
[component]
(get-raw-react-prop component #?(:clj :fulcro$parent
:cljs "fulcro$parent")))
(defn depth
"PRIVATE: Returns the render depth (a integer) of the component relative to
the mount root."
[component]
(when (component? component)
(get-raw-react-prop component #?(:clj :fulcro$depth
:cljs "fulcro$depth"))))
(defn react-key
"Returns the components React key."
[component]
(get-raw-react-prop component #?(:clj :fulcro$reactKey
:cljs "fulcro$reactKey")))
#?(:clj
(defn props [component]
{:pre [(component? component)]}
(:fulcro$value (:props component))))
#?(:cljs
(defn props
"Return a components props."
[component]
{:pre [(component? component)]}
(gobj/get (.-props component) "fulcro$value")))
#?(:clj
(defn init-local-state [component]
(reset! (:state component) (.initLocalState component))))
(defn get-state
"Get a component's local state. May provide a single key or a sequential
collection of keys for indexed access into the component's local state."
([component]
(get-state component []))
([component k-or-ks]
{:pre [(component? component)]}
(let [cst #?(:clj @(:state component)
:cljs (when-let [state (. component -state)] (gobj/get state "fulcro$state")))]
(get-in cst (if (sequential? k-or-ks) k-or-ks [k-or-ks])))))
(defn- get-static-query
"Get the statically-declared query of IQuery from a given class."
[c]
{:pre (has-query? c)}
#?(:clj ((-> c meta :query) c) :cljs (query c)))
(defn some-hasquery?
"Returns true if the given component or one of its parents has a query."
[c]
(loop [c c]
(cond
(nil? c) false
(has-query? c) true
:else (recur (parent c)))))
(defn get-ident
"Get the ident for a mounted component OR using a component class.
That arity-2 will return the ident using the supplied props map.
The single-arity version should only be used with a mounted component (e.g. `this` from `render`), and will derive the
props that were sent to it most recently."
([x]
{:pre [(component? x)]}
(if-let [m (props x)]
(ident x m)
(log/warn "get-ident was invoked on component with nil props (this could mean it wasn't yet mounted): " x)))
([class props]
#?(:clj (if-let [ident (if (component? class)
ident
(-> class meta :ident))]
(let [id (ident class props)]
(if-not (util/ident? id)
(log/warn "get-ident returned an invalid ident for class:" class))
(if (= ::not-found (second id)) [(first id) nil] id))
(log/warn "get-ident called with something that is either not a class or does not implement ident: " class))
:cljs (if (implements? Ident class)
(let [id (ident class props)]
(if-not (util/ident? id)
(log/warn "get-ident returned an invalid ident for class:" class))
(if (= ::not-found (second id)) [(first id) nil] id))
(log/warn "get-ident called with something that is either not a class or does not implement ident: " class)))))
(defn component-name
"Returns a string version of the given react component's name."
[class]
#?(:clj (str (-> class meta :component-ns) "/" (-> class meta :component-name))
:cljs (.-displayName class)))
(defn query-id
"Returns a string ID for the query of the given class with qualifier"
[class qualifier]
(if (nil? class)
(log/error "Query ID received no class (if you see this warning, it probably means metadata was lost on your query)" (ex-info "" {}))
(when-let [classname (component-name class)]
(str classname (when qualifier (str "$" qualifier))))))
#?(:clj
(defn- is-element? [e]
(or
(instance? fulcro.client.impl.protocols.IReactComponent e)
(instance? fulcro.client.impl.protocols.IReactDOMElement e)
(satisfies? p/IReactComponent e)
(satisfies? p/IReactDOMElement e))))
#?(:clj
(defn fragment [& args]
(let [children (if (is-element? (first args)) args (rest args))]
(vec children))))
#?(:cljs
(defn fragment
"Wraps children in a React.Fragment. Props are optional, like normal DOM elements."
[& args]
(let [[props children] (if (map? (first args))
[(first args) (rest args)]
[#js {} args])]
(apply js/React.createElement js/React.Fragment (clj->js props) children))))
#?(:clj
(defn factory
"Create a factory constructor from a component class created with
fulcro.client.primitives/defui."
([class]
(factory class nil))
([class {:keys [validator keyfn instrument? qualifier]
:or {instrument? true} :as opts}]
{:pre [(fn? class)]}
(with-meta
(fn element-factory
([] (element-factory nil))
([props & children]
(when-not (nil? validator)
(assert (validator props)))
(if (and *instrument* (var-get *instrument*) instrument?)
(*instrument*
{:props props
:children children
:class class
:factory (factory class (assoc opts :instrument? false))})
(let [react-key (cond
(some? keyfn) (keyfn props)
(some? (:react-key props)) (:react-key props)
:else (compute-react-key class props))
ctor class
ref (:ref props)
props {:fulcro$reactRef ref
:fulcro$reactKey react-key
:fulcro$value (cond-> props
(map? props) (dissoc :ref))
:fulcro$queryid (query-id class qualifier)
:fulcro$mounted? (atom false)
:fulcro$reconciler *reconciler*
:fulcro$parent *parent*
:fulcro$shared *shared*
:fulcro$instrument *instrument*
:fulcro$depth *depth*}
component (ctor (atom nil) (atom nil) props children)]
(when ref
(assert (some? *parent*))
(swap! (:refs *parent*) assoc ref component))
(init-local-state component)
component))))
{:class class
:queryid (query-id class qualifier)
:qualifier qualifier}))))
#?(:cljs
(defn create-element [class props children]
(apply js/React.createElement class props children)))
#?(:cljs
(defn factory
"Create a factory constructor from a component class created with
defui."
([class] (factory class nil))
([class {:keys [validator keyfn instrument? qualifier]
:or {instrument? true} :as opts}]
{:pre [(fn? class)]}
(with-meta
(fn element-factory [props & children]
(when-not (nil? validator)
(assert (validator props)))
(if (and *instrument* instrument?)
(*instrument*
{:props props
:children children
:class class
:factory (factory class (assoc opts :instrument? false))})
(let [key (if-not (nil? keyfn)
(keyfn props)
(compute-react-key class props))
ref (:ref props)
ref (cond-> ref (keyword? ref) str)]
(create-element class
#js {:key key
:ref ref
:fulcro$reactKey key
:fulcro$value props
:fulcro$queryid (query-id class qualifier)
:fulcro$reconciler *reconciler*
:fulcro$parent *parent*
:fulcro$shared *shared*
:fulcro$instrument *instrument*
:fulcro$depth *depth*}
(or (util/force-children children) [])))))
{:class class
:queryid (query-id class qualifier)
:qualifier qualifier}))))
(defn computed-factory
"Similar to factory, but returns a function with the signature
[props computed] instead of default [props & children]. This makes easier to send
computed but will not accept children params."
([class] (computed-factory class {}))
([class options]
(let [factory (factory class options)]
(fn real-factory
([props] (real-factory props {}))
([props computed]
(factory (computed props computed)))))))
(defn denormalize-query
"Takes a state map that may contain normalized queries and a query ID. Returns the stored query or nil."
[state-map ID]
(let [get-stored-query (fn [id] (get-in state-map [::queries id :query]))]
(when-let [normalized-query (get-stored-query ID)]
(prewalk (fn [ele]
(if-let [q (and (string? ele) (get-stored-query ele))]
q
ele)) normalized-query))))
(defn get-query-by-id [state-map class queryid]
(let [query (or (denormalize-query state-map queryid) (get-static-query class))]
(with-meta query {:component class
:queryid queryid})))
(defn is-factory?
[class-or-factory]
(and (fn? class-or-factory)
(-> class-or-factory meta (contains? :qualifier))))
(def ^{:dynamic true :private true} *query-state* {})
(defn- get-query-id
"Get the query id that is cached in the component's props."
[component]
{:pre [(component? component)]}
(get-raw-react-prop component #?(:clj :fulcro$queryid
:cljs "fulcro$queryid")))
(defn get-query
"Get the query for the given class or factory. If called without a state map, then you'll get the declared static
query of the class. If a state map is supplied, then the dynamically set queries in that state will result in
the current dynamically-set query according to that state."
([class-or-factory] (get-query class-or-factory *query-state*))
([class-or-factory state-map]
(binding [*query-state* state-map]
(let [class (cond
(is-factory? class-or-factory) (-> class-or-factory meta :class)
(component? class-or-factory) (react-type class-or-factory)
:else class-or-factory)
qualifier (if (is-factory? class-or-factory)
(-> class-or-factory meta :qualifier)
nil)
queryid (if (component? class-or-factory)
(get-query-id class-or-factory)
(query-id class qualifier))]
(when (and class (has-query? class))
(get-query-by-id state-map class queryid))))))
(defn link-element [element]
(prewalk (fn link-element-helper [ele]
(let [{:keys [queryid]} (meta ele)]
(if queryid queryid ele))) element))
(defn deep-merge [& xs]
"Merges nested maps without overwriting existing keys."
(if (every? map? xs)
(apply merge-with deep-merge xs)
(last xs)))
(defn normalize-query-elements
"Determines if there are query elements in the present query that need to be normalized as well. If so, it does so.
Returns the new state map."
[state-map query]
(reduce (fn normalize-query-elements-reducer [state ele]
(let [parameterized? (seq? ele) ; not using list? because it could show up as a lazyseq
raw-element (if parameterized? (first ele) ele)]
(cond
(util/union? raw-element) (let [union-alternates (first (vals raw-element))
normalized-union-alternates (into {} (map link-element union-alternates))
union-query-id (-> union-alternates meta :queryid)]
(assert union-query-id "Union query has an ID. Did you use extended get-query?")
(deep-merge
{::queries {union-query-id {:query normalized-union-alternates
:id union-query-id}}}
(reduce (fn normalize-union-reducer [s [_ subquery]]
(normalize-query s subquery)) state union-alternates)))
(util/join? raw-element) (normalize-query state (util/join-value raw-element))
:else state)))
state-map query))
(defn link-query
"Find all of the elements (only at the top level) of the given query and replace them
with their query ID"
[query]
(mapv link-element query))
(defn normalize-query
"Given a state map and a query, returns a state map with the query normalized into the database. Query fragments
that already appear in the state will not be added. "
[state-map query]
(let [new-state (normalize-query-elements state-map query)
new-state (if (nil? (::queries new-state))
(assoc new-state ::queries {})
new-state)
top-query (link-query query)]
(if-let [queryid (some-> query meta :queryid)]
(deep-merge {::queries {queryid {:query top-query :id queryid}}} new-state)
new-state)))
(defn set-query*
"Put a query in app state.
NOTE: Indexes must be rebuilt after setting a query, so this function should primarily be used to build
up an initial app state."
[state-map ui-factory-class-or-queryid {:keys [query] :as args}]
(let [queryid (cond
(nil? ui-factory-class-or-queryid) nil
(string? ui-factory-class-or-queryid) ui-factory-class-or-queryid
(some-> ui-factory-class-or-queryid meta (contains? :queryid)) (some-> ui-factory-class-or-queryid meta :queryid)