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/* Copyright 2017-2021 Sean Williams
This file is part of Modern Footnotes.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
jQuery(function($) {
$(document).on('mouseenter', '.modern-footnotes-footnote.modern-footnotes-footnote--hover-on-desktop a', null, function(e) {
if ($(window).width() >= 768) {
window.modernFootnotesActivelyHovering = true;
window.modernFootnotesOpenedFootnoteViaHover = true;
modern_footnotes_show_tooltip_footnote($(this).parent(), true, 'modern-footnotes-footnote__note--opened-by-hover'); //don't transfer focus when hovering - this messes up text highlighting
}
});
$(document).on('mouseenter', '.modern-footnotes-footnote__connector,.modern-footnotes-footnote__note', null, function(e) {
window.modernFootnotesActivelyHovering = true;
});
$(document).on('mouseleave',
'.modern-footnotes-footnote.modern-footnotes-footnote--hover-on-desktop,' +
'.modern-footnotes-footnote.modern-footnotes-footnote--hover-on-desktop .modern-footnotes-footnote__connector,' +
'.modern-footnotes-footnote__note--opened-by-hover', null, function(e) {
if (window.modernFootnotesHoverCloseTimeout != null) {
clearTimeout(window.modernFootnotesHoverCloseTimeout);
}
if (window.modernFootnotesActivelyHovering) {
window.modernFootnotesHoverCloseTimeout = setTimeout(function() {
window.modernFootnotesHoverCloseTimeout = null;
if (!window.modernFootnotesActivelyHovering) {
modern_footnotes_hide_footnotes();
$(".modern-footnotes-footnote__note--opened-by-hover").removeClass("modern-footnotes-footnote__note--opened-by-hover");
}
}, 600);
}
window.modernFootnotesActivelyHovering = false;
});
$(document).on('click', '.modern-footnotes-footnote a', null, function(e) {
e.preventDefault();
e.stopPropagation();
next = '.modern-footnotes-footnote__note[data-mfn="' + $(this).parent().attr("data-mfn") + '"]';
var $footnoteContent = $(this).parent().nextAll(next).eq(0);
if ($footnoteContent.is(":hidden")) {
if ($(window).width() >= 768 && $(this).parent().is(":not(.modern-footnotes-footnote--expands-on-desktop)")) { //use same size as bootstrap for mobile
modern_footnotes_show_tooltip_footnote($(this).parent());
$(this).attr("aria-pressed","true");
} else if ($(window).width() < 768 || $(this).parent().is(":not(.modern-footnotes-footnote--hover-on-desktop)")) {
//expandable style
$(this).attr("aria-pressed","true");
$footnoteContent
.removeClass('modern-footnotes-footnote__note--tooltip')
.addClass('modern-footnotes-footnote__note--expandable')
.css('display', 'block');
$(this).data('unopenedContent', $(this).html());
$(this).html('x');
} else {
//do nothing when user is in desktop + .modern-footnotes-footnote--hover-on-desktop is present (behavior is handled by hovering, in that case
}
} else {
modern_footnotes_hide_footnotes($(this));
}
}).on('click', '.modern-footnotes-footnote__note', null, function(e) {
e.stopPropagation();
}).on('click', function() {
//when clicking the body, close tooltip-style footnotes
if ($(window).width() >= 768 && $(".modern-footnotes-footnote--expands-on-desktop").length == 0) {
modern_footnotes_hide_footnotes();
}
});
//hide all footnotes on window resize or clicking anywhere but on the footnote link
$(window).resize(function() {
modern_footnotes_hide_footnotes();
});
//some plugins, like TablePress, cause shortcodes to be rendered
//in a different order than they appear in the HTML. This can cause
//the numbering to be out of order. I couldn't find a way to deal
//with this on the PHP side (as of 1/27/18), so this JavaScript fix
//will correct the numbering if it's not sequential.
var $footnotesAnchorLinks = $("body .modern-footnotes-footnote a");
var usedReferenceNumbers = {};
if ($footnotesAnchorLinks.length > 1) {
$footnotesAnchorLinks.each(function() {
var postScope = $(this).parent().attr("data-mfn-post-scope");
if (typeof usedReferenceNumbers[postScope] === 'undefined') {
usedReferenceNumbers[postScope] = [0];
}
if ($(this).is("a[data-mfn-reset]")) {
usedReferenceNumbers[postScope] = [0];
}
if ($(this).is("a[refnum]")) {
var manualRefNum = $(this).attr("refnum");
if ($(this).html() != manualRefNum) {
$(this).html(manualRefNum);
}
if (!isNaN(parseFloat(manualRefNum)) && isFinite(manualRefNum)) { //prevent words from being added to this array
usedReferenceNumbers[postScope].push(manualRefNum);
}
}
else {
var refNum = Math.max.apply(null, usedReferenceNumbers[postScope]) + 1;
if ($(this).html() != refNum) {
$(this).html(refNum);
}
usedReferenceNumbers[postScope].push(refNum);
}
});
}
});
/* if $footnoteAnchor provided, closes that footnote. Otherwise, closes all footnotes */
function modern_footnotes_hide_footnotes($footnoteAnchor) {
window.modernFootnotesOpenedFootnoteViaHover = false;
if ($footnoteAnchor != null) {
if ($footnoteAnchor.data('unopenedContent')) {
$footnoteAnchor.html($footnoteAnchor.data('unopenedContent'));
}
let next = '.modern-footnotes-footnote__note[data-mfn="' + $footnoteAnchor.parent().attr("data-mfn") + '"]';
let $note = $footnoteAnchor.parent().nextAll(next).eq(0); //use nextAll insetad of next in case people are adding HTML between the footnote elements, which some folks use as a customization: https://wordpress.org/support/topic/expandable-footnote-does-not-disappear/
$note.hide().css({'left': '', 'top': ''}); //remove left and top property to prevent improper calculations per the bug report at https://wordpress.org/support/topic/footnotes-resizing-on-subsequent-clicks/
$note.next(".modern-footnotes-footnote__connector").remove();
$footnoteAnchor.removeClass("modern-footnotes-footnote--selected");
$footnoteAnchor.attr("aria-pressed","false");
$footnoteAnchor.focus();
} else {
jQuery(".modern-footnotes-footnote a").each(function() {
var $this = jQuery(this);
if ($this.data('unopenedContent')) {
$this.html($this.data('unopenedContent'));
}
});
jQuery(".modern-footnotes-footnote > a").attr("aria-pressed", "false");
jQuery(".modern-footnotes-footnote__note").hide().css({'left': '', 'top': ''}); //remove left and top property to prevent improper calculations per the bug report at https://wordpress.org/support/topic/footnotes-resizing-on-subsequent-clicks/
jQuery(".modern-footnotes-footnote__connector").remove();
jQuery(".modern-footnotes-footnote--selected").removeClass("modern-footnotes-footnote--selected");
}
}
function modern_footnotes_show_tooltip_footnote($footnoteElement, doNotTransferFocus, additionalClass) {
//tooltip style
modern_footnotes_hide_footnotes(); //only allow one footnote to be open at a time on desktop
$footnoteElement.toggleClass('modern-footnotes-footnote--selected');
let next = '.modern-footnotes-footnote__note[data-mfn="' + $footnoteElement.attr("data-mfn") + '"]';
var $footnoteContent = $footnoteElement.nextAll(next).eq(0);
$footnoteContent
.show()
.addClass('modern-footnotes-footnote__note--tooltip')
.removeClass('modern-footnotes-footnote__note--expandable');
if (additionalClass) {
$footnoteContent.addClass(additionalClass);
}
if (!doNotTransferFocus) {
$footnoteContent.focus();
}
//accessibility - close footnote on escape key
$footnoteContent
.unbind('keydown')
.bind('keydown', function(event) {
if (event.key == 'Escape') {
modern_footnotes_hide_footnotes($footnoteElement.children('a'));
}
});
//calculate the position for the footnote
var position = $footnoteElement.position();
var fontHeight = Math.floor(parseInt($footnoteElement.parent().css('font-size').replace(/px/, '')) * 1.5);
var footnoteWidth = $footnoteContent.outerWidth();
var windowWidth = jQuery(window).width();
var left = position.left - footnoteWidth / 2
if (left < 0) left = 8 // leave some margin on left side of screen
if (left + footnoteWidth > jQuery(window).width()) left = jQuery(window).width() - footnoteWidth;
var top = (parseInt(position.top) + parseInt(fontHeight));
$footnoteContent.css({
top: top + 'px',
left: left + 'px'
});
//add a connector between the footnote and the tooltip
$footnoteContent.after('<div class="modern-footnotes-footnote__connector"></div>');
var superscriptPosition = $footnoteElement.position();
var superscriptHeight = $footnoteElement.outerHeight();
var superscriptWidth = $footnoteElement.outerWidth();
var connectorHeight = top - superscriptPosition.top - superscriptHeight;
jQuery(".modern-footnotes-footnote__connector").css({
top: (superscriptPosition.top + superscriptHeight) + 'px',
height: connectorHeight,
left: (superscriptPosition.left + superscriptWidth / 2) + 'px'
});
}