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popover.cljs
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popover.cljs
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(ns om-widgets.popover
(:require-macros [cljs.core.async.macros :refer [go go-loop]])
(:import [goog.events EventType])
(:require [om.core :as om :include-macros true]
[om.dom :as dom :include-macros true]
[cljs.core.async :refer [put! chan <! alts! timeout close!]]
[sablono.core :refer-macros [html]]
[dommy.core :as dommy :refer-macros [sel sel1]]
[goog.events :as events]
[om-widgets.utils :as u]))
(defn- get-window-scroll!
"Get js/window scroll {:scroll-x :scroll-y}
Note: fn with side-effects"
[]
(cond (not (nil? (.-pageYOffset js/window)))
{:scroll-x (.-pageXOffset js/window)
:scroll-y (.-pageYOffset js/window)}
(not (nil? (.-scrollTop js/document.body)))
{:scroll-x (.-scrollLeft js/document)
:scroll-y (.-scrollTop js/document)}
(not (nil? (.-scrollTop js/document.documentElement)))
{:scroll-x (.-scrollLeft js/document.documentElement)
:scroll-y (.-scrollTop js/document.documentElement)}))
(defn window-size []
(merge {:scroll-x 0
:scroll-y 0}
(u/get-window-boundaries!)
(get-window-scroll!)))
(defn client-rects
[el]
(let [rs (.getClientRects el)]
(if (not (nil? (.-length rs)))
(map (fn [i]
(let [r (.item rs i)]
{:top (.-top r)
:bottom (.-bottom r)
:left (.-left r)
:right (.-right r)
:width (.-width r)
:height (.-height r)})) (range (.-length rs)))
[{:top (.-top rs)
:bottom (.-bottom rs)
:left (.-left rs)
:right (.-right rs)
:width (.-width rs)
:height (.-height rs)}])))
(defn app-root []
(sel1 "div [data-reactid]"))
(defn popover-overlay
[_ owner]
(reify
om/IDidMount
(did-mount [this]
(let [node (om.core/get-node owner)
parent (dommy/remove! node)]
(dommy/append! (app-root) node)
(om/update-state! owner (fn [st]
(merge st {:node node
:parent parent})))))
om/IWillUnmount
(will-unmount [this]
(dommy/remove! (om/get-state owner :node))
(dommy/append! (om/get-state owner :parent) (om/get-state owner :node)))
om/IRenderState
(render-state [this {:keys [mouse-down]}]
(html
[:div {:class "om-widgets-popover-overlay"
:onMouseDown #(when mouse-down
(mouse-down)
nil)}]))))
(defn arrow-offset-align [vl0 vl1 align]
(+ vl0 (* align (- vl1 vl0))))
(defmulti select-side (fn [prefered-side _ _ _] prefered-side))
(defmethod select-side :top
[_ target-pos bounding-rect wz]
(cond
(>= (- (:top target-pos)
(+ (:height bounding-rect) 20))
(:scroll-y wz)) :top
(<= (+ (:bottom target-pos) (:height bounding-rect))
(+ (:scroll-y wz) (- (:height wz) 20))) :bottom
(<= (+ (:right target-pos) (:width bounding-rect))
(+ (:scroll-x wz) (- (:width wz) 20))) :right
(>= (- (:left target-pos) (+ (:width bounding-rect) 20))
(:scroll-x wz)) :left
:else :center))
(defmethod select-side :bottom
[_ target-pos bounding-rect wz]
(cond
(<= (+ (:bottom target-pos) (:height bounding-rect))
(+ (:scroll-y wz) (- (:height wz) 20))) :bottom
(>= (- (:top target-pos)
(+ (:height bounding-rect) 20))
(:scroll-y wz)) :top
(<= (+ (:right target-pos) (:width bounding-rect))
(+ (:scroll-x wz) (- (:width wz) 20))) :right
(>= (- (:left target-pos) (+ (:width bounding-rect) 20))
(:scroll-x wz)) :left
:else :center))
(defmethod select-side :right
[_ target-pos bounding-rect wz]
(cond
(<= (+ (:right target-pos) (:width bounding-rect))
(+ (:scroll-x wz) (- (:width wz) 20))) :right
(>= (- (:left target-pos) (+ (:width bounding-rect) 20))
(:scroll-x wz)) :left
(>= (- (:top target-pos)
(+ (:height bounding-rect) 20))
(:scroll-y wz)) :top
(<= (+ (:bottom target-pos) (:height bounding-rect))
(+ (:scroll-y wz) (- (:height wz) 20))) :bottom
:else :center))
(defmethod select-side :left
[_ target-pos bounding-rect wz]
(cond (>= (- (:left target-pos) (+ (:width bounding-rect) 20))
(:scroll-x wz)) :left
(<= (+ (:right target-pos) (:width bounding-rect))
(+ (:scroll-x wz) (- (:width wz) 20))) :right
(>= (- (:top target-pos)
(+ (:height bounding-rect) 20))
(:scroll-y wz)) :top
(<= (+ (:bottom target-pos) (:height bounding-rect))
(+ (:scroll-y wz) (- (:height wz) 20))) :bottom
:else :center))
(defn popover-container
[_ owner opts]
(let [update-position #(put! (om/get-state owner :channel) :update)]
(reify
om/IInitState
(init-state [this]
{:channel (chan)
:side :bottom
:has-arrow (:has-arrow opts)})
om/IDidMount
(did-mount [this]
(let [node (om.core/get-node owner)
align (or (:align opts) 0.5)
coordinates (om/get-state owner :coordinates)
parent (dommy/remove! node)
target (if (:for opts)
(or (sel1 (keyword (str "#" (:for opts)))) parent)
parent)
arrow (sel1 node ".arrow")]
(dommy/append! (app-root) node)
(om/update-state! owner (fn [st]
(merge st {:node node
:parent parent})))
(go-loop []
(let [message (<! (om/get-state owner :channel))]
(when-not (= message :quit)
(let [ofs-max (fn [o m]
(if (< o 0)
(max o (- m))
(min o m)))
wz (window-size)
trect (if coordinates
{:top (:y coordinates)
:bottom (+ (:y coordinates) 1)
:left (:x coordinates)
:right (+ (:x coordinates) 1)
:width 1
:height 1}
(first (client-rects target)))
target-pos (merge trect
{:top (+ (:top trect) (:scroll-y wz))
:bottom (+ (:bottom trect) (:scroll-y wz))
:left (+ (:left trect) (:scroll-x wz))
:right (+ (:right trect) (:scroll-x wz))})
bounding-rect (dommy/bounding-client-rect node)
side (select-side (om/get-state owner :prefered-side) target-pos bounding-rect wz)
y (condp = side
:top (- (:top target-pos)
(:height bounding-rect))
:bottom (:bottom target-pos)
:right (- (+ (:top target-pos) (* (:height target-pos) align))
(* (:height bounding-rect) align))
:left (- (+ (:top target-pos) (* (:height target-pos) align))
(* (:height bounding-rect) align))
:center (- (+ (/ (:height wz) 2)
(:scroll-y wz))
(/ (:height bounding-rect) 2)))
x (condp = side
:top (- (+ (:left target-pos) (* (:width target-pos) align))
(* (:width bounding-rect) align))
:bottom (- (+ (:left target-pos) (* (:width target-pos) align))
(* (:width bounding-rect) align))
:right (:right target-pos)
:left (- (:left target-pos) (:width bounding-rect))
:center (- (+ (/ (:width wz) 2)
(:scroll-x wz))
(/ (:width bounding-rect) 2)))
offset-left (ofs-max (if (contains? #{:top :bottom} side)
(cond (< x (:scroll-x wz)) (- (:scroll-x wz) x)
(> (+ x (:width bounding-rect)) (+ (:width wz) (:scroll-x wz))) (- (+ (:width wz) (:scroll-x wz)) (+ x (:width bounding-rect)))
:else 0)
0)
(- (/ (:width bounding-rect) 2) 20))
arrow-left (* 100 (- align (/ (- offset-left (arrow-offset-align 14 -14 align)) (:width bounding-rect))))
offset-top (ofs-max (if (contains? #{:left :right} side)
(cond (< y (:scroll-y wz)) (- (:scroll-y wz) y)
(> (+ y (:height bounding-rect)) (+ (:height wz) (:scroll-y wz))) (- (+ (:height wz) (:scroll-y wz)) (+ y (:height bounding-rect)))
:else 0)
0)
(- (/ (:height bounding-rect) 2) 20))
has-arrow (if-not (= side :center)
(:has-arrow opts)
false)
arrow-top (* 100 (- align (/ (- offset-top (arrow-offset-align 14 -14 align))(:height bounding-rect))))]
(om/set-state! owner :has-arrow has-arrow)
(when-not (= (om/get-state owner :side) side)
(om/set-state! owner :side side))
(dommy/set-px! node :top (+ y offset-top) :left (+ x offset-left))
(when arrow
(if (contains? #{:top :bottom} side)
(dommy/set-style! arrow :left (str arrow-left "%"))
(dommy/set-style! arrow :top (str arrow-top "%"))))
(recur)))))
(events/listen js/window EventType.RESIZE update-position)
(put! (om/get-state owner :channel) :update)))
om/IWillUnmount
(will-unmount [this]
(dommy/remove! (om/get-state owner :node))
(dommy/append! (om/get-state owner :parent) (om/get-state owner :node))
(events/unlisten js/window EventType.RESIZE update-position)
(put! (om/get-state owner :channel) :quit))
om/IRenderState
(render-state [this {:keys [label side has-arrow content-fn mouse-down] :as state}]
(html
[:div {:class (str "om-widgets-popover " (name side) " " (:popover-class opts))}
(when (:mouse-down opts)
(om/build popover-overlay nil {:state {:mouse-down (:mouse-down opts)}}))
[:span {:class (when has-arrow "arrow")}]
[:div {:class "popover-container"}
(content-fn (:close-fn opts))]])))))
(defn popover-component
[_ owner opts]
(reify
om/IRenderState
(render-state [this {:keys [visible-content-fn popup-content-fn visible prefered-side channel coordinates] :as state}]
(html
[:div {:class (:launcher-class-name opts)}
(when visible
(dom/div #js {:style #js {:position "absolute" :display "inline"}}
(om/build popover-container nil {:init-state {:channel channel}
:state {:content-fn popup-content-fn
:prefered-side prefered-side
:coordinates coordinates}
:opts {:for (:for opts)
:align (:align opts)
:has-arrow (:has-arrow opts)
:mouse-down #(om/set-state! owner :visible false)
:popover-class (:popover-class opts)
:close-fn #(go
(<! (timeout 10))
(om/set-state! owner :visible false))}})))
(visible-content-fn (fn []
(om/update-state! owner (fn [st]
(merge st {:visible true})))))]))))
(defn- labeled-popover-component
[_ owner opts]
(reify
om/IInitState
(init-state [this]
{:visible false})
om/IRenderState
(render-state [this {:keys [label id disabled class-name visible body prefered-side channel coordinates]}]
(html
[:div {:class (:launcher-class-name opts)}
[:a {:class class-name
:id id
:disabled disabled
:onClick #(do
(om/set-state! owner :visible true)
nil)}
label]
(when visible
(om/build popover-container nil {:state {:content-fn body
:prefered-side prefered-side
:coordinates coordinates
:channel channel}
:opts {:align (:align opts)
:has-arrow (:has-arrow opts)
:mouse-down #(om/set-state! owner :visible false)
:popover-class (:popover-class opts)
:close-fn #(go
(<! (timeout 10))
(om/set-state! owner :visible false))}}))]))))
;; ---------------------------------------------------------------------
;; Public
(defn popover
"Display a pop over screen window
When front-face is a string build a <a tag
When front-face is a function must return a om dom/ component.
class-name id and disabled works only when front-face is a string
prefered-side :top, :bottom, :right, :left default = :bottom
"
[front-face popup-body {:keys [class-name
id
disabled
for
prefered-side
has-arrow
popover-class
launcher-class-name
channel
align
visible
coordinates]
:or {class-name "om-widgets-popover-button"
prefered-side :bottom
popover-class ""
launcher-class-name "om-widgets-popover-launcher"
has-arrow true
visible false
channel (chan)
align 0.5}}]
(cond
(fn? front-face)
(om/build popover-component nil {:init-state {:visible visible}
:state {:visible-content-fn front-face
:popup-content-fn popup-body
:prefered-side prefered-side
:channel channel
:coordinates coordinates}
:opts {:for for
:has-arrow has-arrow
:popover-class popover-class
:launcher-class-name launcher-class-name
:align align}})
:else
(om/build labeled-popover-component nil {:init-state {:visible visible}
:state {:label front-face
:id (or id front-face)
:disabled disabled
:class-name class-name
:prefered-side prefered-side
:body popup-body
:channel channel
:coordinates coordinates}
:opts {:align align
:popover-class popover-class
:launcher-class-name launcher-class-name
:has-arrow has-arrow}})))