friendica_2021-01/view/theme/frio/js/hovercard.js

188 lines
6.1 KiB
JavaScript

// @license magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt AGPLv3-or-later
/*
* The javascript for friendicas hovercard. Bootstraps popover is needed.
*
* Much parts of the code are from Hannes Mannerheims <h@nnesmannerhe.im>
* qvitter code (https://github.com/hannesmannerheim/qvitter)
*
* It is licensed under the GNU Affero General Public License <http://www.gnu.org/licenses/>
*
*/
$(document).ready(function () {
let $body = $('body');
// Prevents normal click action on click hovercard elements
$body.on('click', '.userinfo.click-card', function (e) {
e.preventDefault();
});
// This event listener needs to be declared before the one that removes
// all cards so that we can stop the immediate propagation of the event
// Since the manual popover appears instantly and the hovercard removal is
// on a 100ms delay, leaving event propagation immediately hides any click hovercard
$body.on('mousedown', '.userinfo.click-card', function (e) {
e.stopImmediatePropagation();
let timeNow = new Date().getTime();
let contactUrl = false;
let targetElement = $(this);
// get href-attribute
if (targetElement.is('[href]')) {
contactUrl = targetElement.attr('href');
} else {
return true;
}
// no hovercard for anchor links
if (contactUrl.substring(0, 1) === '#') {
return true;
}
openHovercard(targetElement, contactUrl, timeNow);
});
// hover cards should be removed very easily, e.g. when any of these events happens
$body.on('mouseleave touchstart scroll mousedown submit keydown', function (e) {
// remove hover card only for desktiop user, since on mobile we open the hovercards
// by click event insteadof hover
removeAllHovercards(e, new Date().getTime());
});
$body.on('mouseover', '.userinfo.hover-card, .wall-item-responses a, .wall-item-bottom .mention a', function (e) {
let timeNow = new Date().getTime();
removeAllHovercards(e, timeNow);
let contactUrl = false;
let targetElement = $(this);
// get href-attribute
if (targetElement.is('[href]')) {
contactUrl = targetElement.attr('href');
} else {
return true;
}
// no hover card if the element has the no-hover-card class
if (targetElement.hasClass('no-hover-card')) {
return true;
}
// no hovercard for anchor links
if (contactUrl.substring(0, 1) === '#') {
return true;
}
targetElement.attr('data-awaiting-hover-card', timeNow);
// Delay until the hover-card does appear
setTimeout(function () {
if (
targetElement.is(':hover')
&& parseInt(targetElement.attr('data-awaiting-hover-card'), 10) === timeNow
&& $('.hovercard').length === 0
) {
openHovercard(targetElement, contactUrl, timeNow);
}
}, 500);
}).on('mouseleave', '.userinfo.hover-card, .wall-item-responses a, .wall-item-bottom .mention a', function (e) { // action when mouse leaves the hover-card
removeAllHovercards(e, new Date().getTime());
});
// if we're hovering a hover card, give it a class, so we don't remove it
$body.on('mouseover', '.hovercard', function (e) {
$(this).addClass('dont-remove-card');
});
$body.on('mouseleave', '.hovercard', function (e) {
$(this).removeClass('dont-remove-card');
$(this).popover('hide');
});
}); // End of $(document).ready
// removes all hover cards
function removeAllHovercards(event, priorTo) {
// don't remove hovercards until after 100ms, so user have time to move the cursor to it (which gives it the dont-remove-card class)
setTimeout(function () {
$.each($('.hovercard'), function () {
let title = $(this).attr('data-orig-title');
// don't remove card if it was created after removeAllhoverCards() was called
if ($(this).data('card-created') < priorTo) {
// don't remove it if we're hovering it right now!
if (!$(this).hasClass('dont-remove-card')) {
let $handle = $('[data-hover-card-active="' + $(this).data('card-created') + '"]');
$handle.removeAttr('data-hover-card-active');
// Restoring the popover handle title
let title = $handle.attr('data-orig-title');
$handle.attr({'data-orig-title': '', title: title});
$(this).popover('hide');
}
}
});
}, 100);
}
function openHovercard(targetElement, contactUrl, timeNow) {
// store the title in a data attribute because Bootstrap
// popover destroys the title attribute.
let title = targetElement.attr('title');
targetElement.attr({'data-orig-title': title, title: ''});
// get an additional data atribute if the card is active
targetElement.attr('data-hover-card-active', timeNow);
// get the whole html content of the hover card and
// push it to the bootstrap popover
getHoverCardContent(contactUrl, function (data) {
if (data) {
targetElement.popover({
html: true,
placement: function () {
// Calculate the placement of the the hovercard (if top or bottom)
// The placement depence on the distance between window top and the element
// which triggers the hover-card
let get_position = $(targetElement).offset().top - $(window).scrollTop();
if (get_position < 270) {
return 'bottom';
}
return 'top';
},
trigger: 'manual',
template: '<div class="popover hovercard" data-card-created="' + timeNow + '"><div class="arrow"></div><div class="popover-content hovercard-content"></div></div>',
content: data,
container: 'body',
sanitizeFn: function (content) {
return DOMPurify.sanitize(content)
},
}).popover('show');
}
});
}
getHoverCardContent.cache = {};
function getHoverCardContent(contact_url, callback) {
let postdata = {
url: contact_url,
};
// Normalize and clean the profile so we can use a standardized url
// as key for the cache
let nurl = cleanContactUrl(contact_url).normalizeLink();
// If the contact is already in the cache use the cached result instead
// of doing a new ajax request
if (nurl in getHoverCardContent.cache) {
callback(getHoverCardContent.cache[nurl]);
return;
}
$.ajax({
url: baseurl + '/contact/hovercard',
data: postdata,
success: function (data, textStatus, request) {
getHoverCardContent.cache[nurl] = data;
callback(data);
},
});
}
// @license-end