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datepicker.cljs
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datepicker.cljs
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(ns ez-form.field.datepicker
"Field for picking dates. Depends on goog.ui.DatePicker and subclasses"
(:require [ez-form.common :as ez.common]
[ez-form.field :as ez.field]
[ez-form.i18n :refer [*t* *locale*]]
[goog.events]
[goog.events.EventType]
[goog.dom]
[goog.i18n.DateTimeFormat]
[goog.i18n.DateTimeParse]
[goog.ui.DatePicker]
[goog.ui.DatePicker.Events]
[goog.ui.InputDatePicker]
[goog.ui.PopupDatePicker]
[goog.ui.PopupBase.EventType]
[reagent.core :as r]))
(defmulti goog<-date type)
(defmethod goog<-date :default [date]
(if (some? date)
;; javascript... why oh why?!
(goog.date.Date. (.getFullYear date) (.getMonth date) (.getDate date))
nil))
(defn anchor-datepicker [{:keys [id c formatter]}]
[:div.date-picker
[:div
(if-let [value @c]
(.format formatter (js/Date. (+ (.getTime value) (* 1000 60 (.getTimezoneOffset value)))))
(*t* *locale* ::pick-a-date))]
[:div {:id (str "anchor-" id)}]])
(defn anchor-popup [{:keys [id c formatter]}]
[:div.popup-date-picker
[:div.date {:id (str "date-" id)}
(if-let [value @c]
(.format formatter (js/Date. (+ (.getTime value) (* 1000 60 (.getTimezoneOffset value)))))
(*t* *locale* ::pick-a-date))]
[:div {:id (str "anchor-" id)}]])
(defn anchor-input [{:keys [id]}]
[:div.input-date-picker {:id (str "anchor-" id)}])
(defn- handle-dp-event [goog->date dp c]
(goog.events/listen
dp
goog.ui.DatePicker.Events/CHANGE
(fn [e]
(if (.-date e)
(reset! c (goog->date (.-date e)))
(reset! c nil)))))
(defn- get-props [field form-options]
(let [id (ez.common/get-first field :id :name)
opts (ez.field/get-opts field [:class :name] form-options)
c (:cursor field)
goog->date (or (:goog->date field)
(fn [date]
(if (some? date)
(let [;; get the javascript date
d (.-date date)
;; get the offset
offset (-> date .-date .getTimezoneOffset)]
;; add the offset after its been reversed
(.setMinutes d (+ (.getMinutes d) (* -1 offset)))
d))))
{:keys [dp parser formatter]}
(let [pattern (or (:pattern field)
"yyyy'-'MM'-'dd")
formatter (goog.i18n.DateTimeFormat. pattern)
parser (goog.i18n.DateTimeParse. pattern)]
(cond (= :input (:mode field))
{:dp (goog.ui.InputDatePicker. formatter parser)
:formatter formatter
:parser parser}
(= :popup (:mode field))
{:dp (goog.ui.PopupDatePicker.)
:formatter formatter
:parser parser}
:else
{:dp (goog.ui.DatePicker.)
:formatter formatter
:parser parser}))
_ (when-let [b (get-in field [:props :date :show-fixed-num-weeks?])] (.setShowFixedNumWeeks dp b))
_ (when-let [b (get-in field [:props :date :show-other-months?])] (.setShowOtherMonths dp b))
_ (when-let [b (get-in field [:props :date :show-today?])] (.setShowToday dp b))
_ (when-let [b (get-in field [:props :date :show-weekday-num?])] (.setShowWeekdayNum dp b))
_ (when-let [b (get-in field [:props :date :show-weekday-names?])] (.setShowWeekdayNames dp b))
_ (when-let [b (get-in field [:props :date :allow-none?])] (.setAllowNone dp b))
_ (when-let [b (get-in field [:props :date :use-narrow-weekday-names?])] (.setUseNarrowWeekdayNames dp b))
_ (when-let [b (get-in field [:props :date :use-allow-simple-navigation-menu?])] (.setUseAllowSimpleNavigationMenu dp b))
_ (when-let [b (get-in field [:props :date :long-date-format?])] (.setLongDateFormat dp b))
f (cond (= :input (:mode field))
(with-meta anchor-input
{:component-did-mount
#(do ;; set up event for updating the ratom
(let [e (goog.dom/getElement (str "anchor-" id))]
;; set up event for updating the ratom
(handle-dp-event goog->date dp c)
;; render the datepicker
(.render dp e)
;; set the date, do this after the date picker has been rendered
;; if done before the rendering the date picked will not be set
;; in the rendered widget
(if-let [d @c]
(.setDate dp (goog<-date d) true)
(.setDate dp (goog<-date (js/Date.)) true))
;; set up feedback loop from the input
;; NOTE: problem 1) setting the date closes the widget
;; problem 2) the strict parse can parse dates shorter
;; than the input you would expect
#_(when-let [input (.getContentElement dp)]
(goog.events/listen input
goog.events.EventType/KEYUP
(fn [e]
(let [v (-> e .-target .-value)]
(try
(let [d (goog.date.Date.)
r (.strictParse parser v d)]
(println r)
(when (not= r 0)
(.setDate dp d false)))
(catch js/Error e
(println e)
;; silently drop
))))))))})
(= :popup (:mode field))
(with-meta anchor-popup
{:component-did-mount
#(do
;; set up event for updating the ratom
(let [e (goog.dom/getElement (str "date-" id))]
;; set up event for updating the ratom
(handle-dp-event goog->date dp c)
;; render the datepicker
(.render dp)
;; attach to the element
(.attach dp e)
;; set the date if set
(goog.events/listen
dp
goog.ui.PopupBase.EventType/SHOW
(fn [e]
(if-let [d @c]
(.setDate dp (goog<-date d) true)
(.setDate dp (goog<-date (js/Date.)) true))))))})
:else
(with-meta anchor-datepicker
{:component-did-mount
#(do
;; set up event for updating the ratom
(handle-dp-event goog->date dp c)
;; render the datepicker
(.render dp (goog.dom/getElement (str "anchor-" id)))
;; set the date, either today or what was sent in
(if-let [d @c]
(.setDate dp (goog<-date d) true)
(.setDate dp (goog<-date (js/Date.)) true)))}))]
{:id id
:opts opts
:c c
:dp dp
:parser parser
:formatter formatter
:f f
:goog->date goog->date}))
(defmethod ez.field/field :datepicker [field form-options]
(let [{:keys [id opts c dp f formatter]} (get-props field form-options)]
[:div.datepicker (merge {:id id :key (str "key-" id)} opts)
[f {:id id :formatter formatter :c c}]]))