/* global WPCOM_sharing_counts */

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// NOTE: This file intentionally does not make use of polyfills or libraries,

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// including jQuery. Please keep all code as IE11-compatible vanilla ES5, and

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// ensure everything is inside an IIFE to avoid global namespace pollution.

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// Code follows WordPress browser support guidelines. For an up to date list,

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// see https://make.wordpress.org/core/handbook/best-practices/browser-support/

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( function () {

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var currentScript = document.currentScript;

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// -------------------------- UTILITY FUNCTIONS -------------------------- //

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// Helper function to load an external script.

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function loadScript( url ) {

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var script = document.createElement( 'script' );

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var prev = currentScript || document.getElementsByTagName( 'script' )[ 0 ];

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script.setAttribute( 'async', true );

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script.setAttribute( 'src', url );

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prev.parentNode.insertBefore( script, prev );

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}

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// Helper matches function (not a polyfill), compatible with IE 11.

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function matches( el, sel ) {

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if ( Element.prototype.matches ) {

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return el.matches( sel );

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}

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if ( Element.prototype.msMatchesSelector ) {

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return el.msMatchesSelector( sel );

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}

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}

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// Helper closest parent node function (not a polyfill) based on

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// https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill

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function closest( el, sel ) {

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if ( el.closest ) {

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return el.closest( sel );

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}

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var current = el;

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do {

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if ( matches( current, sel ) ) {

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return current;

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}

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current = current.parentElement || current.parentNode;

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} while ( current !== null && current.nodeType === 1 );

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return null;

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}

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// Helper function to iterate over a NodeList

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// (since IE 11 doesn't have NodeList.prototype.forEach)

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function forEachNode( list, fn ) {

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for ( var i = 0; i < list.length; i++ ) {

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var node = list[ i ];

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fn( node, i, list );

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}

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}

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// Helper function to remove a node from the DOM.

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function removeNode( node ) {

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if ( node && node.parentNode ) {

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node.parentNode.removeChild( node );

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}

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}

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// Helper functions to show/hide a node, and check its status.

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function hideNode( node ) {

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if ( node ) {

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node.style.display = 'none';

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}

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}

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function showNode( node ) {

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if ( node ) {

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node.style.removeProperty( 'display' );

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}

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}

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function isNodeHidden( node ) {

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return ! node || node.style.display === 'none';

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}

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// ------------------------------- CLASSES ------------------------------- //

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var PANE_SELECTOR = '.sharing-hidden .inner';

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var PANE_DATA_ATTR = 'data-sharing-more-button-id';

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// Implements a MoreButton class, which controls the lifecycle and behavior

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// of a "more" button and its dialog.

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function MoreButton( buttonEl ) {

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this.button = buttonEl;

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this.pane = closest( buttonEl, 'div' ).querySelector( PANE_SELECTOR );

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this.openedBy = null;

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this.recentlyOpenedByHover = false;

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MoreButton.instances.push( this );

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this.pane.setAttribute( PANE_DATA_ATTR, MoreButton.instances.length - 1 );

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this.attachHandlers();

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}

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// Keep a reference to each instance, so we can get back to it from the DOM.

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MoreButton.instances = [];

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// Delay time configs.

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MoreButton.hoverOpenDelay = 200;

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MoreButton.recentOpenDelay = 400;

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MoreButton.hoverCloseDelay = 300;

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// Use this to avoid creating new instances for buttons which already have one.

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MoreButton.instantiateOrReuse = function ( buttonEl ) {

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var pane = closest( buttonEl, 'div' ).querySelector( PANE_SELECTOR );

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var paneId = pane && pane.getAttribute( PANE_DATA_ATTR );

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var existingInstance = MoreButton.instances[ paneId ];

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if ( existingInstance ) {

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return existingInstance;

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}

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return new MoreButton( buttonEl );

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};

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// Retrieve a button instance from the pane DOM element.

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MoreButton.getButtonInstanceFromPane = function ( paneEl ) {

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var paneId = paneEl && paneEl.getAttribute( PANE_DATA_ATTR );

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return MoreButton.instances[ paneId ];

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};

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// Close all open More Button dialogs.

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MoreButton.closeAll = function () {

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for ( var i = 0; i < MoreButton.instances.length; i++ ) {

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MoreButton.instances[ i ].close();

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}

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};

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MoreButton.prototype.open = function () {

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var offset;

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var offsetParent;

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var parentOffset = [ 0, 0 ];

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function getOffsets( el ) {

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var rect = el.getBoundingClientRect();

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return [

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rect.left + ( window.scrollX || window.pageXOffset || 0 ),

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rect.top + ( window.scrollY || window.pageYOffset || 0 ),

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];

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}

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function getStyleValue( el, prop ) {

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return parseInt( getComputedStyle( el ).getPropertyValue( prop ) || 0 );

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}

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offset = getOffsets( this.button );

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offsetParent = this.button.offsetParent || document.documentElement;

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while (

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offsetParent &&

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( offsetParent === document.body || offsetParent === document.documentElement ) &&

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getComputedStyle( offsetParent ).getPropertyValue( 'position' ) === 'static'

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) {

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offsetParent = offsetParent.parentNode;

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}

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if ( offsetParent && offsetParent !== this.button && offsetParent.nodeType === 1 ) {

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parentOffset = getOffsets( offsetParent );

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parentOffset = [

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parentOffset[ 0 ] + getStyleValue( offsetParent, 'border-left-width' ),

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parentOffset[ 1 ] + getStyleValue( offsetParent, 'border-top-width' ),

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];

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}

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var positionLeft =

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offset[ 0 ] - parentOffset[ 0 ] - getStyleValue( this.button, 'margin-left' );

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var positionTop = offset[ 1 ] - parentOffset[ 1 ] - getStyleValue( this.button, 'margin-top' );

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this.pane.style.left = positionLeft + 'px';

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this.pane.style.top = positionTop + this.button.offsetHeight + 3 + 'px';

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showNode( this.pane );

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};

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MoreButton.prototype.close = function () {

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hideNode( this.pane );

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this.openedBy = null;

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};

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MoreButton.prototype.toggle = function () {

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if ( isNodeHidden( this.pane ) ) {

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this.open();

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} else {

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this.close();

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}

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};

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MoreButton.prototype.nonHoverOpen = function () {

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clearTimeout( this.openTimer );

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clearTimeout( this.closeTimer );

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if ( this.recentlyOpenedByHover ) {

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this.recentlyOpenedByHover = false;

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clearTimeout( this.hoverOpenTimer );

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this.open();

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} else {

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this.toggle();

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}

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};

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MoreButton.prototype.resetCloseTimer = function () {

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clearTimeout( this.closeTimer );

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this.closeTimer = setTimeout( this.close.bind( this ), MoreButton.hoverCloseDelay );

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};

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MoreButton.prototype.attachHandlers = function () {

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this.buttonClick = function ( event ) {

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event.preventDefault();

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event.stopPropagation();

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this.openedBy = 'click';

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this.nonHoverOpen();

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}.bind( this );

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this.buttonKeydown = function ( event ) {

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if ( event.keyCode === 13 || event.keyCode === 32 ) {

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event.preventDefault();

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event.stopPropagation();

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this.openedBy = 'keydown';

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this.nonHoverOpen();

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}

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}.bind( this );

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this.buttonEnter = function () {

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if ( ! this.openedBy ) {

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this.openTimer = setTimeout(

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function () {

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this.open();

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this.openedBy = 'hover';

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this.recentlyOpenedByHover = true;

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this.hoverOpenTimer = setTimeout(

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function () {

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this.recentlyOpenedByHover = false;

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}.bind( this ),

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MoreButton.recentOpenDelay

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);

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}.bind( this ),

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MoreButton.hoverOpenDelay

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);

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}

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clearTimeout( this.closeTimer );

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}.bind( this );

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this.buttonLeave = function () {

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if ( this.openedBy === 'hover' ) {

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this.resetCloseTimer();

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}

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clearTimeout( this.openTimer );

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}.bind( this );

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this.paneEnter = function () {

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clearTimeout( this.closeTimer );

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}.bind( this );

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this.paneLeave = function () {

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if ( this.openedBy === 'hover' ) {

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this.resetCloseTimer();

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}

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}.bind( this );

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this.documentClick = function () {

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this.close();

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}.bind( this );

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this.button.addEventListener( 'click', this.buttonClick );

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this.button.addEventListener( 'keydown', this.buttonKeydown );

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document.addEventListener( 'click', this.documentClick );

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if ( document.ontouchstart === undefined ) {

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// Non-touchscreen device: use hover/mouseout with delay

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this.button.addEventListener( 'mouseenter', this.buttonEnter );

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this.button.addEventListener( 'mouseleave', this.buttonLeave );

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this.pane.addEventListener( 'mouseenter', this.paneEnter );

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this.pane.addEventListener( 'mouseleave', this.paneLeave );

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}

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};

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// ---------------------------- SHARE COUNTS ---------------------------- //

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if ( window.sharing_js_options && window.sharing_js_options.counts ) {

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var WPCOMSharing = {

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done_urls: [],

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get_counts: function () {

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var url, requests, id, service, service_request;

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if ( 'undefined' === typeof WPCOM_sharing_counts ) {

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return;

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}

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for ( url in WPCOM_sharing_counts ) {

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id = WPCOM_sharing_counts[ url ];

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if ( 'undefined' !== typeof WPCOMSharing.done_urls[ id ] ) {

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continue;

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}

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requests = {

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// Pinterest handles share counts for both http and https

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pinterest: [

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window.location.protocol +

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'//api.pinterest.com/v1/urls/count.json?callback=WPCOMSharing.update_pinterest_count&url=' +

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encodeURIComponent( url ),

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],

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};

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for ( service in requests ) {

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if ( ! document.querySelector( 'a[data-shared=sharing-' + service + '-' + id + ']' ) ) {

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continue;

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}

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while ( ( service_request = requests[ service ].pop() ) ) {

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loadScript( service_request );

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}

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if ( window.sharing_js_options.is_stats_active ) {

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WPCOMSharing.bump_sharing_count_stat( service );

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}

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}

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WPCOMSharing.done_urls[ id ] = true;

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}

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},

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update_pinterest_count: function ( data ) {

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if ( 'undefined' !== typeof data.count && data.count * 1 > 0 ) {

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WPCOMSharing.inject_share_count(

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'sharing-pinterest-' + WPCOM_sharing_counts[ data.url ],

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data.count

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);

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}

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},

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inject_share_count: function ( id, count ) {

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forEachNode(

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document.querySelectorAll( 'a[data-shared=' + id + '] > span' ),

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function ( span ) {

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var countNode = span.querySelector( '.share-count' );

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removeNode( countNode );

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var newNode = document.createElement( 'span' );

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newNode.className = 'share-count';

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newNode.textContent = WPCOMSharing.format_count( count );

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span.appendChild( newNode );

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}

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);

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},

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format_count: function ( count ) {

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if ( count < 1000 ) {

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return count;

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}

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if ( count >= 1000 && count < 10000 ) {

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return String( count ).substring( 0, 1 ) + 'K+';

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}

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return '10K+';

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},

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bump_sharing_count_stat: function ( service ) {

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new Image().src =

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document.location.protocol +

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'//pixel.wp.com/g.gif?v=wpcom-no-pv&x_sharing-count-request=' +

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service +

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'&r=' +

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Math.random();

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},

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};

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window.WPCOMSharing = WPCOMSharing;

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}

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// ------------------------ BUTTON FUNCTIONALITY ------------------------ //

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function isUrlForCurrentHost( url ) {

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var currentDomain = window.location.protocol + '//' + window.location.hostname + '/';

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return String( url ).indexOf( currentDomain ) === 0;

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}

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function getEncodedFormFieldForSubmit( name, value ) {

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// Encode the key and value into a URI-compatible string.

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var encoded = encodeURIComponent( name ) + '=' + encodeURIComponent( value );

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// In x-www-form-urlencoded, spaces should be `+`, not `%20`.

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return encoded.replace( /%20/g, '+' );

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}

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function trackButtonClick( button ) {

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var clickCount = getClickCountForButton( button );

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setClickCountForButton( button, clickCount + 1 );

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}

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function setClickCountForButton( button, clickCount ) {

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button.setAttribute( 'jetpack-share-click-count', clickCount );

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}

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function getClickCountForButton( button ) {

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var currentClickCount = button.getAttribute( 'jetpack-share-click-count' );

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if ( currentClickCount === null ) {

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return 0;

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}

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return parseInt( currentClickCount, 10 );

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}

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function showEmailShareError( emailShareButton, sdUlGroup ) {

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var sdContent = sdUlGroup.parentElement;

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if ( ! sdContent.classList.contains( 'sd-content' ) ) {

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return;

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}

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forEachNode( sdContent.querySelectorAll( '.share-email-error' ), function ( shareEmailError ) {

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shareEmailError.parentElement.removeChild( shareEmailError );

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} );

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var newShareEmailError = document.createElement( 'div' );

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newShareEmailError.className = 'share-email-error';

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var newShareEmailErrorTitle = document.createElement( 'h6' );

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newShareEmailErrorTitle.className = 'share-email-error-title';

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newShareEmailErrorTitle.innerText = emailShareButton.getAttribute(

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'data-email-share-error-title'

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);

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newShareEmailError.appendChild( newShareEmailErrorTitle );

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var newShareEmailErrorText = document.createElement( 'p' );

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newShareEmailErrorText.className = 'share-email-error-text';

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newShareEmailErrorText.innerText = emailShareButton.getAttribute(

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'data-email-share-error-text'

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);

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newShareEmailError.appendChild( newShareEmailErrorText );

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sdContent.appendChild( newShareEmailError );

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}

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function recordEmailShareClick( emailShareTrackerUrl, emailShareNonce ) {

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var request = new XMLHttpRequest();

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request.open( 'POST', emailShareTrackerUrl, true );

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request.setRequestHeader( 'Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8' );

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request.setRequestHeader( 'x-requested-with', 'XMLHttpRequest' );

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request.send( getEncodedFormFieldForSubmit( 'email-share-nonce', emailShareNonce ) );

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}

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// Sharing initialization.

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// Will run immediately or on `DOMContentLoaded`, depending on current page status.

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function init() {

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WPCOMSharing_do();

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}

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if ( document.readyState !== 'loading' ) {

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init();

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} else {

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document.addEventListener( 'DOMContentLoaded', init );

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}

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// Set up sharing again whenever a new post loads, to pick up any new buttons.

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document.body.addEventListener( 'is.post-load', WPCOMSharing_do );

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// Set up sharing, updating counts and adding all button functionality.

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function WPCOMSharing_do() {

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if ( window.WPCOMSharing ) {

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window.WPCOMSharing.get_counts();

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}

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forEachNode( document.querySelectorAll( '.sharedaddy a' ), function ( anchor ) {

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var href = anchor.getAttribute( 'href' );

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if ( href && href.indexOf( 'share=' ) !== -1 && href.indexOf( '&nb=1' ) === -1 ) {

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anchor.setAttribute( 'href', href + '&nb=1' );

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}

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} );

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// Show hidden buttons

[475] Fix | Delete

[476] Fix | Delete

// Touchscreen device: use click.

[477] Fix | Delete

// Non-touchscreen device: use click if not already appearing due to a hover event

[478] Fix | Delete

[479] Fix | Delete

forEachNode(

[480] Fix | Delete

document.querySelectorAll( '.sharedaddy a.sharing-anchor' ),

[481] Fix | Delete

function ( buttonEl ) {

[482] Fix | Delete

MoreButton.instantiateOrReuse( buttonEl );

[483] Fix | Delete

}

[484] Fix | Delete

);

[485] Fix | Delete

[486] Fix | Delete

if ( document.ontouchstart !== undefined ) {

[487] Fix | Delete

document.body.classList.add( 'jp-sharing-input-touch' );

[488] Fix | Delete

}

[489] Fix | Delete

[490] Fix | Delete

// Add click functionality

[491] Fix | Delete

forEachNode( document.querySelectorAll( '.sharedaddy ul' ), function ( group ) {

[492] Fix | Delete

if ( group.getAttribute( 'data-sharing-events-added' ) === 'true' ) {

[493] Fix | Delete

return;

[494] Fix | Delete

}

[495] Fix | Delete

group.setAttribute( 'data-sharing-events-added', 'true' );

[496] Fix | Delete

[497] Fix | Delete

var printUrl = function ( uniqueId, urlToPrint ) {

[498] Fix | Delete

var iframe = document.createElement( 'iframe' );

[499] Fix | Delete