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<h1 id="redux-observable"><a href="#redux-observable" class="headerlink" title="redux-observable"></a>redux-observable</h1><p><a href="https://redux-observable.js.org/" target="_blank" rel="noopener">redux-observables</a> can be used to manage side effects via <code>Epics</code> (their core primitive to receive and create stream of actions). <strong>Subspace</strong> can be configured inside these epics. </p>
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<p>It’s recommended to compose these epics by using <a href="https://www.learnrxjs.io/operators/transformation/mergemap.html" target="_blank" rel="noopener">mergeMap</a> or <a href="https://www.learnrxjs.io/operators/transformation/switchmap.html" target="_blank" rel="noopener">switchMap</a> operators.</p>
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<p>Here’s an example on how to use <strong>Subspace</strong> to subscribe to an Event when the action <code>SOME_ACTION</code> is dispatched, and then it will trigger <code>myAction</code> when the observable emits a value.</p>
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<!-- Has Prism -->
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<pre class="line-numbers" style="" ><code class="language-js">// ...
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const myEpic = action$ =>
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action$.pipe(
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ofType("SOME_ACTION"), // Execute when the action type is 'INIT'
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switchMap(action =>
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subspace
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.trackEvent(MyContract, "MyEventName", { filter: {}, fromBlock: 1})
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.pipe(
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map(myAction) // Trigger redux action: MY_ACTION with the eventData
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)
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)
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);
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// ...
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</code></pre>
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<div class="c-notification">
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An example is available in <a href="https://github.com/embarklabs/subspace/tree/master/examples/redux-observable" target="_blank">Github</a>
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</div>
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<h4 id="Further-read"><a href="#Further-read" class="headerlink" title="Further read"></a>Further read</h4><ul>
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<li><a href="https://redux-observable.js.org/docs/basics/Epics.html" target="_blank" rel="noopener">Epics</a></li>
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context = args = null;
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};
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return function() {
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var now = _now();
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var remaining = wait - (now - previous);
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context = this;
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args = arguments;
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clearTimeout(timeout);
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timeout = null;
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previous = now;
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result = func.apply(context, args);
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context = args = null;
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timeout = setTimeout(later, remaining);
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}
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return result;
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};
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var _getScrollY = function() {
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var _getElemY = function(elem, side) {
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var pos = 0;
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var elemHeight = elem.offsetHeight;
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while (elem) {
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pos += elem.offsetTop;
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elem = elem.offsetParent;
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}
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if (side === "bottom") {
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pos = pos + elemHeight;
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}
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return pos;
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};
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var Headhesive = function(elem, options) {
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if (!("querySelector" in document && "addEventListener" in window)) {
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return;
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}
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this.visible = false;
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this.options = {
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offset: 300,
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offsetSide: "top",
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classes: {
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clone: "headhesive",
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stick: "headhesive--stick",
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unstick: "headhesive--unstick"
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},
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throttle: 250,
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onInit: function() {},
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onStick: function() {},
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onUnstick: function() {},
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onDestroy: function() {}
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this.options = _mergeObj(this.options, options);
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this.init();
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this._setScrollOffset();
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throw new Error("Invalid offset: " + this.options.offset);
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this._throttleUpdate = _throttle(this.update.bind(this), this.options.throttle);
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this._throttleScrollOffset = _throttle(this._setScrollOffset.bind(this), this.options.throttle);
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window.addEventListener("scroll", this._throttleUpdate, false);
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window.addEventListener("resize", this._throttleScrollOffset, false);
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this.options.onInit.call(this);
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},
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_setScrollOffset: function() {
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if (typeof this.options.offset === "string") {
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this.scrollOffset = _getElemY(document.querySelector(this.options.offset), this.options.offsetSide);
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}
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},
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destroy: function() {
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document.body.removeChild(this.clonedElem);
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window.removeEventListener("scroll", this._throttleUpdate);
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window.removeEventListener("resize", this._throttleScrollOffset);
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this.options.onDestroy.call(this);
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},
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stick: function() {
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if (!this.visible) {
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this.clonedElem.className = this.clonedElem.className.replace(new RegExp("(^|\\s)*" + this.options.classes.unstick + "(\\s|$)*", "g"), "");
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this.clonedElem.className += " " + this.options.classes.stick;
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this.visible = true;
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this.options.onStick.call(this);
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this.visible = false;
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this.options.onUnstick.call(this);
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}
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update: function() {
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if (_getScrollY() > this.scrollOffset) {
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this.stick();
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||
this.unstick();
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||
}
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||
}
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||
};
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||
return Headhesive;
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||
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||
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||
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e=d.offset(),f=parseInt(d.css("padding-top"),10),g=parseInt(d.css("padding-bottom"),10);e.top-=a(window).scrollTop()-f;var h={width:d.width(),height:(u?d.innerHeight():d[0].offsetHeight)-g-f};return O()?h["-moz-transform"]=h.transform="translate("+e.left+"px,"+e.top+"px)":(h.left=e.left,h.top=e.top),h}}});var P="iframe",Q="//about:blank",R=function(a){if(b.currTemplate[P]){var c=b.currTemplate[P].find("iframe");c.length&&(a||(c[0].src=Q),b.isIE8&&c.css("display",a?"block":"none"))}};a.magnificPopup.registerModule(P,{options:{markup:'<div class="mfp-iframe-scaler"><div class="mfp-close"></div><iframe class="mfp-iframe" src="//about:blank" frameborder="0" 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d=c.arrowMarkup,e=b.arrowLeft=a(d.replace(/%title%/gi,c.tPrev).replace(/%dir%/gi,"left")).addClass(s),f=b.arrowRight=a(d.replace(/%title%/gi,c.tNext).replace(/%dir%/gi,"right")).addClass(s);e.click(function(){b.prev()}),f.click(function(){b.next()}),b.container.append(e.add(f))}}),w(n+e,function(){b._preloadTimeout&&clearTimeout(b._preloadTimeout),b._preloadTimeout=setTimeout(function(){b.preloadNearbyImages(),b._preloadTimeout=null},16)}),void w(h+e,function(){d.off(e),b.wrap.off("click"+e),b.arrowRight=b.arrowLeft=null})):!1},next:function(){b.direction=!0,b.index=S(b.index+1),b.updateItemHTML()},prev:function(){b.direction=!1,b.index=S(b.index-1),b.updateItemHTML()},goTo:function(a){b.direction=a>=b.index,b.index=a,b.updateItemHTML()},preloadNearbyImages:function(){var 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</script>
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<script>
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? factory(require('jquery')) :
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||
typeof define === 'function' && define.amd ? define(['jquery'], factory) :
|
||
(factory(global.jQuery));
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||
}(this, (function ($) { 'use strict';
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|
||
$ = $ && $.hasOwnProperty('default') ? $['default'] : $;
|
||
|
||
/**
|
||
* @author Mudit Ameta
|
||
* @license https://github.com/zeusdeux/isInViewport/blob/master/license.md MIT
|
||
*/
|
||
|
||
// expose isInViewport as a custom pseudo-selector
|
||
$.extend($.expr.pseudos || $.expr[':'], {
|
||
// if $.expr.createPseudo is available, use it
|
||
'in-viewport': $.expr.createPseudo
|
||
? $.expr.createPseudo(function (argsString) { return function (currElement) { return isInViewport(currElement, getSelectorArgs(argsString)); }; })
|
||
: function (currObj, index, meta) { return isInViewport(currObj, getSelectorArgs(meta[3])); }
|
||
});
|
||
|
||
|
||
// expose isInViewport as a function too
|
||
// this lets folks pass around actual objects as options (like custom viewport)
|
||
// and doesn't tie 'em down to strings. It also prevents isInViewport from
|
||
// having to look up and wrap the dom element corresponding to the viewport selector
|
||
$.fn.isInViewport = function(options) {
|
||
return this.filter(function (i, el) { return isInViewport(el, options); })
|
||
};
|
||
|
||
$.fn.run = run;
|
||
|
||
// lets you chain any arbitrary function or an array of functions and returns a jquery object
|
||
function run(args) {
|
||
var this$1 = this;
|
||
|
||
if (arguments.length === 1 && typeof args === 'function') {
|
||
args = [args];
|
||
}
|
||
|
||
if (!(args instanceof Array)) {
|
||
throw new SyntaxError('isInViewport: Argument(s) passed to .do/.run should be a function or an array of functions')
|
||
}
|
||
|
||
args.forEach(function (arg) {
|
||
if (typeof arg !== 'function') {
|
||
console.warn('isInViewport: Argument(s) passed to .do/.run should be a function or an array of functions');
|
||
console.warn('isInViewport: Ignoring non-function values in array and moving on');
|
||
} else {
|
||
[].slice.call(this$1).forEach(function (t) { return arg.call($(t)); });
|
||
}
|
||
});
|
||
|
||
return this
|
||
}
|
||
|
||
|
||
// gets the width of the scrollbar
|
||
function getScrollbarWidth(viewport) {
|
||
// append a div that has 100% width to get true width of viewport
|
||
var el = $('<div></div>').css({
|
||
width: '100%'
|
||
});
|
||
viewport.append(el);
|
||
|
||
// subtract true width from the viewport width which is inclusive
|
||
// of scrollbar by default
|
||
var scrollBarWidth = viewport.width() - el.width();
|
||
|
||
// remove our element from DOM
|
||
el.remove();
|
||
return scrollBarWidth
|
||
}
|
||
|
||
|
||
// Returns true if DOM element `element` is in viewport
|
||
function isInViewport(element, options) {
|
||
var ref = element.getBoundingClientRect();
|
||
var top = ref.top;
|
||
var bottom = ref.bottom;
|
||
var left = ref.left;
|
||
var right = ref.right;
|
||
|
||
var settings = $.extend({
|
||
tolerance: 0,
|
||
viewport: window
|
||
}, options);
|
||
var isVisibleFlag = false;
|
||
var $viewport = settings.viewport.jquery ? settings.viewport : $(settings.viewport);
|
||
|
||
if (!$viewport.length) {
|
||
console.warn('isInViewport: The viewport selector you have provided matches no element on page.');
|
||
console.warn('isInViewport: Defaulting to viewport as window');
|
||
$viewport = $(window);
|
||
}
|
||
|
||
var $viewportHeight = $viewport.height();
|
||
var $viewportWidth = $viewport.width();
|
||
var typeofViewport = $viewport[0].toString();
|
||
|
||
// if the viewport is other than window recalculate the top,
|
||
// bottom,left and right wrt the new viewport
|
||
// the [object DOMWindow] check is for window object type in PhantomJS
|
||
if ($viewport[0] !== window && typeofViewport !== '[object Window]' && typeofViewport !== '[object DOMWindow]') {
|
||
// use getBoundingClientRect() instead of $.Offset()
|
||
// since the original top/bottom positions are calculated relative to browser viewport and not document
|
||
var viewportRect = $viewport[0].getBoundingClientRect();
|
||
|
||
// recalculate these relative to viewport
|
||
top = top - viewportRect.top;
|
||
bottom = bottom - viewportRect.top;
|
||
left = left - viewportRect.left;
|
||
right = right - viewportRect.left;
|
||
|
||
// get the scrollbar width from cache or calculate it
|
||
isInViewport.scrollBarWidth = isInViewport.scrollBarWidth || getScrollbarWidth($viewport);
|
||
|
||
// remove the width of the scrollbar from the viewport width
|
||
$viewportWidth -= isInViewport.scrollBarWidth;
|
||
}
|
||
|
||
// handle falsy, non-number and non-integer tolerance value
|
||
// same as checking using isNaN and then setting to 0
|
||
// bitwise operators deserve some love too you know
|
||
settings.tolerance = ~~Math.round(parseFloat(settings.tolerance));
|
||
|
||
if (settings.tolerance < 0) {
|
||
settings.tolerance = $viewportHeight + settings.tolerance; // viewport height - tol
|
||
}
|
||
|
||
// the element is NOT in viewport iff it is completely out of
|
||
// viewport laterally or if it is completely out of the tolerance
|
||
// region. Therefore, if it is partially in view then it is considered
|
||
// to be in the viewport and hence true is returned. Because we have adjusted
|
||
// the left/right positions relative to the viewport, we should check the
|
||
// element's right against the viewport's 0 (left side), and the element's
|
||
// left against the viewport's width to see if it is outside of the viewport.
|
||
|
||
if (right <= 0 || left >= $viewportWidth) {
|
||
return isVisibleFlag
|
||
}
|
||
|
||
// if the element is bound to some tolerance
|
||
isVisibleFlag = settings.tolerance ? top <= settings.tolerance && bottom >= settings.tolerance : bottom > 0 && top <= $viewportHeight;
|
||
|
||
return isVisibleFlag
|
||
}
|
||
|
||
|
||
// get the selector args from the args string proved by Sizzle
|
||
function getSelectorArgs(argsString) {
|
||
if (argsString) {
|
||
var args = argsString.split(',');
|
||
|
||
// when user only gives viewport and no tolerance
|
||
if (args.length === 1 && isNaN(args[0])) {
|
||
args[1] = args[0];
|
||
args[0] = void 0;
|
||
}
|
||
|
||
return {
|
||
tolerance: args[0] ? args[0].trim() : void 0,
|
||
viewport: args[1] ? $(args[1].trim()) : void 0
|
||
}
|
||
}
|
||
return {}
|
||
}
|
||
|
||
})));
|
||
|
||
//# sourceMappingURL=isInViewport.js.map
|
||
</script>
|
||
|
||
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.19.0/prism.min.js"></script>
|
||
<script>
|
||
$(document).ready(function() {
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||
$(document).on('scroll',function(e)
|
||
{
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||
$('h2[id]').each(function()
|
||
{
|
||
if ( $(this).offset().top < window.pageYOffset + 100
|
||
&& $(this).offset().top +
|
||
$(this).height() > window.pageYOffset + 100
|
||
)
|
||
{
|
||
|
||
$(this).addClass('is-active');
|
||
|
||
var data = $(this).attr('id');
|
||
|
||
window.location.hash = '#!' + data;
|
||
|
||
var $location = window.location.hash.replace(/^#!/, '');
|
||
|
||
$('.js-docs-sidebar a').each(function() {
|
||
if($(this).attr('href').indexOf($location) > -1) {
|
||
$(this).addClass('is-active');
|
||
} else {
|
||
$(this).removeClass('is-active');
|
||
}
|
||
});
|
||
}
|
||
|
||
});
|
||
});
|
||
|
||
|
||
$(window).scroll(function() {
|
||
$('.js-inviewport-item').isInViewport({
|
||
tolerance: 0
|
||
})
|
||
.addClass('is-active');
|
||
});
|
||
|
||
var options = {
|
||
classes: {
|
||
clone: 'o-header__top--clone',
|
||
stick: 'is-sticky',
|
||
unstick: 'is-unsticky'
|
||
}
|
||
};
|
||
if($(window).width() >= 767) {
|
||
var header = new Headhesive('.js-header', options);
|
||
}
|
||
$('.js-navigation-open').on('click', function(event) {
|
||
event.preventDefault();
|
||
|
||
$('.js-navigation-list').addClass('is-active');
|
||
});
|
||
|
||
$('.js-navigation-close').on('click', function(event) {
|
||
event.preventDefault();
|
||
|
||
$('.js-navigation-list').removeClass('is-active');
|
||
});
|
||
|
||
$('.js-header-keyvisual').addClass('is-active');
|
||
|
||
// Popup
|
||
$('.js-popup').magnificPopup({
|
||
type: 'inline',
|
||
preloader: false,
|
||
focus: '#name',
|
||
|
||
// When elemened is focused, some mobile browsers in some cases zoom in
|
||
// It looks not nice, so we disable it:
|
||
callbacks: {
|
||
beforeOpen: function() {
|
||
if($(window).width() < 700) {
|
||
this.st.focus = false;
|
||
} else {
|
||
this.st.focus = '#name';
|
||
}
|
||
}
|
||
}
|
||
});
|
||
|
||
// Scroll
|
||
$('.js-anchor-scroll').anchorScroll({
|
||
scrollSpeed: 800, // scroll speed
|
||
offsetTop: 100, // offset for fixed top bars (defaults to 0)
|
||
onScroll: function () {
|
||
// callback on scroll start
|
||
},
|
||
scrollEnd: function () {
|
||
// callback on scroll end
|
||
}
|
||
});
|
||
});
|
||
|
||
$('.js-docs-trigger').on('click', function(event) {
|
||
event.preventDefault();
|
||
|
||
$('.js-docs-sidebar').addClass('is-active');
|
||
});
|
||
|
||
$('.js-docs-trigger-close').on('click', function(event) {
|
||
event.preventDefault();
|
||
|
||
$('.js-docs-sidebar').removeClass('is-active');
|
||
});
|
||
</script>
|
||
</body>
|
||
|
||
|
||
</body>
|
||
</html>
|
||
|