friendica/view/js/linkPreview.js
Josh Soref ab59732c09 spelling: deactivate
Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
2023-03-26 18:59:11 -04:00

878 lines
23 KiB
JavaScript
Raw Permalink Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

// @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt Expat
// @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL
/**
* Copyright (c) 2014 Leonardo Cardoso (http://leocardz.com)
* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
* and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
*
* Restructured by Rabzuarus (https://friendica.kommune4.de/profile/rabuzarus)
* to use it in the decentralized social network Friendica (https://friendi.ca).
*
* Version: 1.4.0
*/
(function ($) {
$.fn.linkPreview = function (options) {
var opts = jQuery.extend({}, $.fn.linkPreview.defaults, options);
var id = $(this).attr('id');
var previewTpl = '\
<div id="preview_' + id + '" class="preview {0}">\
{1}\
<input type="hidden" name="has_attachment" id="hasAttachment_' + id + '" value="{2}" />\
<input type="hidden" name="attachment_url" id="attachmentUrl_' + id + '" value="{3}" />\
<input type="hidden" name="attachment_type" id="attachmentType_' + id + '" value="{4}" />\
</div>';
var attachmentTpl = '\
<hr class="previewseparator">\
<div id="closePreview_' + id + '" title="Remove" class="closePreview" >\
<button type="button" class="previewActionBtn">×</button>\
</div>\
<div id="previewImages_' + id + '" class="previewImages">\
<div id="previewImgBtn_' + id + '" class="previewImgBtn">\
<button type="button" id="previewChangeImg_' + id + '" class="buttonChangeDeactivate previewActionBtn" style="display: none">\
<i class="fa fa-exchange" aria-hidden="true"></i>\
</button>\
</div>\
<div id="previewImage_' + id + '" class="previewImage">\
</div>\
<input type="hidden" id="photoNumber_' + id + '" class="photoNumber" value="0" />\
<input type="hidden" name="attachment_img_src" id="attachmentImageSrc_' + id + '" value="" />\
<input type="hidden" name="attachment_img_width" id="attachmentImageWidth_' + id + '" value="0" />\
<input type="hidden" name="attachment_img_height" id="attachmentImageHeight_' + id + '" value="0" />\
</div>\
<div id="previewContent_' + id + '" class="previewContent">\
<h4 id="previewTitle_' + id + '" class="previewTitle"></h4>\
<blockquote id="previewDescription_' + id + '" class="previewDescription"></blockquote>\
<div id="hiddenDescription_' + id + '" class="hiddenDescription"></div>\
<sup id="previewUrl_' + id + '" class="previewUrl"></sup>\
</div>\
<div class="clear"></div>\
<hr class="previewseparator">';
var text;
var binurl;
var block = false;
var blockTitle = false;
var blockDescription = false;
var cache = {};
var images = "";
var isExtern = false;
var photoNumber = 0;
var firstPosted = false;
var isActive = false;
var isCrawling = false;
var defaultTitle = opts.defaultTitle;
var defaultDescription = opts.defaultDescription;
/**
* Initialize the plugin
*
* @returns {void}
*/
var init = function() {
$('#' + id).bind({
paste: function () {
setTimeout(function () {
crawlText();
}, 100);
},
keyup: function (e) {
// on enter, space, ctrl
if ((e.which === 13 || e.which === 32 || e.which === 17)) {
crawlText();
}
}
});
// Check if we have already attachment bbcode in the textarea
// and add it to the attachment preview.
var content = $('#' + id).val();
addBBCodeToPreview(content);
};
/**
* Reset some values.
*
* @returns {void}
*/
var resetPreview = function() {
$('#hasAttachment_' + id).val(0);
photoNumber = 0;
images = "";
};
/**
* Crawl a text string if it contains an url and try
* to attach it.
*
* If no text is passed to crawlText() we take
* the previous word before the cursor of the textarea.
*
* @param {string} text (optional)
* @returns {void}
*/
var crawlText = function (text) {
block = false;
images = '';
isExtern = false;
// If no text is passed to crawlText() we
// take the previous word before the cursor.
if (typeof text === 'undefined') {
text = getPrevWord(id);
} else {
isExtern = true;
}
// Don't process the textarea input if we have already
// an attachment preview.
if (!isExtern && isActive) {
return;
}
if (trim(text) !== "" && block === false && urlRegex.test(text)) {
binurl = bin2hex(text);
block = true;
isCrawling = true;
$('#profile-rotator').show();
if (binurl in cache) {
isCrawling = false;
processContentData(cache[binurl]);
} else {
getContentData(binurl, processContentData);
}
}
};
/**
* Process the attachment data according to
* its content type (image, audio, video, attachment)
*
* @param {object} result
* @returns {void}
*/
var processContentData = function(result) {
if (result.contentType === 'image') {
insertImage(result.data);
}
if (result.contentType === 'audio') {
insertAudio(result.data);
}
if (result.contentType === 'video') {
insertVideo(result.data);
}
if (result.contentType === 'attachment') {
insertAttachment(result.data);
}
$('#profile-rotator').hide();
};
/**
* Fetch the content of link which should be attached.
*
* @param {string} binurl Link which should be attached as hexadecimal string.
* @param {type} callback
* @returns {void}
*/
var getContentData = function(binurl, callback) {
$.get('parseurl?binurl='+ binurl + '&format=json', function (answer) {
obj = sanitizeInputData(answer);
// Put the data into a cache
cache[binurl] = obj;
callback(obj);
isCrawling = false;
});
};
/*
* Add a [img] bbtag with the image url to the jot editor.
*
* @param {type} data
* @returns {void}
*/
var insertImage = function(data) {
if (!isExtern) {
return;
}
var bbcode = '\n[img]' + data.url + '[/img]\n';
addeditortext(bbcode);
};
/*
* Add a [audio] bbtag with the audio url to the jot editor.
*
* @param {type} data
* @returns {void}
*/
var insertAudio = function(data) {
if (!isExtern) {
return;
}
var bbcode = '\n[audio]' + data.url + '[/audio]\n';
addeditortext(bbcode);
};
/*
* Add a [video] bbtag with the video url to the jot editor.
*
* @param {type} data
* @returns {void}
*/
var insertVideo = function(data) {
if (!isExtern) {
return;
}
var bbcode = '\n[video]' + data.url + '[/video]\n';
addeditortext(bbcode);
};
/**
* Process all attachment data and show up a html
* attachment preview.
*
* @param {obj} data Attachment data.
* @returns {void}
*/
var insertAttachment = function(data) {
// If we have already a preview, leaver here.
// Note: if we finish the Preview of other media content type,
// we can move this condition to the beginning of crawlText();
if (isActive) {
$('#profile-rotator').hide();
return;
}
if (data.type !== 'link' && data.type !== 'video' && data.type !== 'photo' || data.url === data.title) {
$('#profile-rotator').hide();
return;
}
$('#photoNumber_' + id).val(0);
resetPreview();
processAttachmentTpl(data, 'type-' + data.type);
addTitleDescription(data);
addHostToAttachment(data.url);
addImagesToAttachment(data.images);
processEventListener();
$('#profile-rotator').hide();
};
/**
* Construct the attachment html from the attachment template and
* add it to the DOM.
*
* @param {object} data Attachment data.
* @returns {void}
*/
var processAttachmentTpl = function(data) {
// Load and add the template if it isn't already loaded.
if ($('#preview_' + id).length === 0) {
var tpl = previewTpl.format(
'type-' + data.type,
attachmentTpl,
1,
bin2hex(data.url),
data.type
);
$('#' + id).after(tpl);
}
isActive = true;
};
/**
* Add the attachment title and the description
* to the attachment preview.
*
* @param {object} data Attachment data.
* @returns {void}
*/
var addTitleDescription = function(data) {
var description = data.text;
if (description === '') {
description = defaultDescription;
}
$('#previewTitle_' + id).html("\
<span id='previewSpanTitle_" + id + "' class='previewSpanTitle' >" + escapeHTML(data.title) + "</span>\
<input type='text' name='attachment_title' value='" + escapeHTML(data.title) + "' id='previewInputTitle_" + id + "' class='previewInputTitle inputPreview' style='display: none;'/>"
);
$('#previewDescription_' + id).html("\
<span id='previewSpanDescription_" + id + "' class='previewSpanDescription' >" + escapeHTML(description) + "</span>\n\
<textarea id='previewInputDescription_" + id + "' name='attachment_text' class='previewInputDescription' style='display: none;' class='inputPreview' >" + escapeHTML(data.text) + "</textarea>"
);
};
/**
* Add the host to the attachment preview.
*
* @param {string} url The url of the link attachment.
* @returns {void}
*/
var addHostToAttachment = function(url) {
if (url) {
var regexpr = "(https?://)([^:^/]*)(:\\d*)?(.*)?";
var regResult = url.match(regexpr);
var urlHost = regResult[1] + regResult[2];
$('#previewUrl_' + id).html("<a href='" + url + "'>" + urlHost + "</a>");
}
};
/**
* Add preview images to the attachment.
*
* @param {array} images
*
* @returns {void}
*/
var addImagesToAttachment = function(images) {
var imageClass = 'attachment-preview';
if (Array.isArray(images)) {
$('#previewImages_' + id).show();
$('#attachmentImageSrc_' + id).val(bin2hex(images[photoNumber].src));
$('#attachmentImageWidth_' + id).val(images[photoNumber].width);
$('#attachmentImageHeight_' + id).val(images[photoNumber].height);
} else {
$('#previewImages_' + id).hide();
}
images.length = parseInt(images.length);
var appendImage = "";
for (i = 0; i < images.length; i++) {
// For small preview images we use a smaller attachment format.
///@todo here we need to add a check for !DI::config()->get('system', 'always_show_preview').
if (images[i].width >= 500 && images[i].width >= images[i].height) {
imageClass = 'attachment-image';
}
if (i === 0) {
appendImage += "<img id='imagePreview_" + id + "_" + i + "' src='" + images[i].src + "' class='" + imageClass + "' ></img>";
} else {
appendImage += "<img id='imagePreview_" + id + "_" + i + "' src='" + images[i].src + "' class='" + imageClass + "' style='display: none;'></img>";
}
}
$('#previewImage_' + id).html(appendImage + "<div id='whiteImage' style='color: transparent; display:none;'>...</div>");
// More than just one image.
if (images.length > 1) {
// Enable the button to change the preview pictures.
$('#previewChangeImg_' + id).show();
if (firstPosted === false) {
firstPosted = true;
$('#previewChangeImg_' + id).unbind('click').click(function (e) {
e.stopPropagation();
if (images.length > 1) {
$('#imagePreview_' + id + '_' + photoNumber).css({
'display': 'none'
});
photoNumber += 1;
// If have reached the last image, begin with the first image.
if (photoNumber === images.length) {
photoNumber = 0;
}
$('#imagePreview_' + id + '_' + photoNumber).css({
'display': 'block'
});
$('#photoNumber_' + id).val(photoNumber);
$('#attachmentImageSrc_' + id).val(bin2hex(images[photoNumber].src));
$('#attachmentImageWidth_' + id).val(images[photoNumber].width);
$('#attachmentImageHeight_' + id).val(images[photoNumber].height);
}
});
}
}
};
/**
* Add event listener to control the attachment preview.
*
* @returns {void}
*/
var processEventListener = function() {
$('#previewSpanTitle_' + id).unbind('click').click(function (e) {
e.stopPropagation();
if (blockTitle === false) {
blockTitle = true;
$('#previewSpanTitle_' + id).hide();
$('#previewInputTitle_' + id).show();
$('#previewInputTitle_' + id).val($('#previewInputTitle_' + id).val());
$('#previewInputTitle_' + id).focus().select();
}
});
$('#previewInputTitle_' + id).blur(function () {
blockTitle = false;
$('#previewSpanTitle_' + id).html($('#previewInputTitle_' + id).val());
$('#previewSpanTitle_' + id).show();
$('#previewInputTitle_' + id).hide();
});
$('#previewInputTitle_' + id).keypress(function (e) {
if (e.which === 13) {
blockTitle = false;
$('#previewSpanTitle_' + id).html($('#previewInputTitle_' + id).val());
$('#previewSpanTitle_' + id).show();
$('#previewInputTitle_' + id).hide();
}
});
$('#previewSpanDescription_' + id).unbind('click').click(function (e) {
e.stopPropagation();
if (blockDescription === false) {
blockDescription = true;
$('#previewSpanDescription_' + id).hide();
$('#previewInputDescription_' + id).show();
$('#previewInputDescription_' + id).val($('#previewInputDescription_' + id).val());
$('#previewInputDescription_' + id).focus().select();
}
});
$('#previewInputDescription_' + id).blur(function () {
blockDescription = false;
$('#previewSpanDescription_' + id).html($('#previewInputDescription_' + id).val());
$('#previewSpanDescription_' + id).show();
$('#previewInputDescription_' + id).hide();
});
$('#previewInputDescription_' + id).keypress(function (e) {
if (e.which === 13) {
blockDescription = false;
$('#previewSpanDescription_' + id).html($('#previewInputDescription_' + id).val());
$('#previewSpanDescription_' + id).show();
$('#previewInputDescription_' + id).hide();
}
});
$('#previewSpanTitle_' + id).mouseover(function () {
$('#previewSpanTitle_' + id).css({
"background-color": "#ff9"
});
});
$('#previewSpanTitle_' + id).mouseout(function () {
$('#previewSpanTitle_' + id).css({
"background-color": "transparent"
});
});
$('#previewSpanDescription_' + id).mouseover(function () {
$('#previewSpanDescription_' + id).css({
"background-color": "#ff9"
});
});
$('#previewSpanDescription_' + id).mouseout(function () {
$('#previewSpanDescription_' + id).css({
"background-color": "transparent"
});
});
$('#closePreview_' + id).unbind('click').click(function (e) {
e.stopPropagation();
block = false;
images = '';
isActive = false;
firstPosted = false;
$('#preview_' + id).fadeOut("fast", function () {
$('#preview_' + id).remove();
$('#profile-rotator').hide();
$('#' + id).focus();
});
});
};
/**
* Convert attachment bbcode into an array.
*
* @param {string} content Text content with the attachment bbcode.
* @returns {object || null}
*/
var getAttachmentData = function(content) {
var data = {};
var match = content.match(/([\s\S]*)\[attachment([\s\S]*?)\]([\s\S]*?)\[\/attachment\]([\s\S]*)/im);
if (match === null || match.length < 5) {
return null;
}
var attributes = match[2];
data.text = trim(match[1]);
var type = '';
var matches = attributes.match(/type='([\s\S]*?)'/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
type = matches[1].toLowerCase();
}
matches = attributes.match(/type="([\s\S]*?)"/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
type = matches[1].toLowerCase();
}
if (type === '') {
return null;
}
if (
type !== 'link'
&& type !== 'audio'
&& type !== 'photo'
&& type !== 'video')
{
return null;
}
if (type !== '') {
data.type = type;
}
var url = '';
matches = attributes.match(/url='([\s\S]*?)'/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
url = matches[1];
}
matches = attributes.match(/url="([\s\S]*?)"/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
url = matches[1];
}
if(url !== '') {
data.url = escapeHTML(url);
}
var title = '';
matches = attributes.match(/title='([\s\S]*?)'/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
title = trim(matches[1]);
}
matches = attributes.match(/title="([\s\S]*?)"/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
title = trim(matches[1]);
}
if (title !== '') {
data.title = escapeHTML(title);
}
var image = '';
matches = attributes.match(/image='([\s\S]*?)'/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
image = trim(matches[1]);
}
matches = attributes.match(/image="([\s\S]*?)"/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
image = trim(matches[1]);
}
if (image !== '') {
data.image = escapeHTML(image);
}
var preview = '';
matches = attributes.match(/preview='([\s\S]*?)'/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
preview = trim(matches[1]);
}
matches = attributes.match(/preview="([\s\S]*?)"/im);
if (matches !== null && typeof matches[1] !== 'undefined') {
preview = trim(matches[1]);
}
if (preview !== '') {
data.preview = escapeHTML(preview);
}
data.text = trim(match[3]);
data.after = trim(match[4]);
return data;
};
/**
* Process txt content and if it contains attachment bbcode
* add it to the attachment preview .
*
* @param {string} content
* @returns {void}
*/
var addBBCodeToPreview =function(content) {
var attachmentData = getAttachmentData(content);
if (attachmentData) {
reAddAttachment(attachmentData);
// Remove the attachment bbcode from the textarea.
var content = content.replace(/\[attachment[\s\S]*\[\/attachment]/im, '');
$('#' + id).val(content);
$('#' + id).focus();
}
};
/**
* Add an Attachment with data from an old bbcode
* generated attachment.
*
* @param {object} json The attachment data.
* @returns {void}
*/
var reAddAttachment = function(json) {
if (isActive) {
$('#profile-rotator').hide();
return;
}
if (json.type !== 'link' && json.type !== 'video' && json.type !== 'photo' || json.url === json.title) {
$('#profile-rotator').hide();
return;
}
var obj = {data: json};
obj = sanitizeInputData(obj);
var data = obj.data;
resetPreview();
processAttachmentTpl(data);
addTitleDescription(data);
addHostToAttachment(data.url);
// Since we don't have an array of image data,
// we need to add the preview images in a different way
// than in function addImagesToAttachment().
var imageClass = 'attachment-preview';
var image = '';
if (data.image !== '') {
imageClass = 'attachment-image';
image = data.image;
} else {
image = data.preview;
}
if (image !== '') {
var appendImage = "<img id='imagePreview_" + id + "' src='" + image + "' class='" + imageClass + "' ></img>"
$('#previewImage_' + id).html(appendImage);
$('#attachmentImageSrc_' + id).val(bin2hex(image));
// We need to add the image width and height when it is
// loaded.
$('<img/>' ,{
load : function(){
$('#attachmentImageWidth_' + id).val(this.width);
$('#attachmentImageHeight_' + id).val(this.height);
},
src : image
});
}
processEventListener();
$('#profile-rotator').hide();
};
/**
* Add missing default properties to the input data object.
*
* @param {object} obj Input data.
* @returns {object}
*/
var sanitizeInputData = function(obj) {
if (typeof obj.contentType === 'undefined'
|| obj.contentType === null)
{
obj.contentType = "";
}
if (typeof obj.data.url === 'undefined'
|| obj.data.url === null)
{
obj.data.url = "";
}
if (typeof obj.data.title === 'undefined'
|| obj.data.title === null
|| obj.data.title === "")
{
obj.data.title = defaultTitle;
}
if (typeof obj.data.text === 'undefined'
|| obj.data.text === null
|| obj.data.text === "")
{
obj.data.text = "";
}
if (typeof obj.data.images === 'undefined'
|| obj.data.images === null)
{
obj.data.images = "";
}
if (typeof obj.data.image === 'undefined'
|| obj.data.image === null)
{
obj.data.image = "";
}
if (typeof obj.data.preview === 'undefined'
|| obj.data.preview === null)
{
obj.data.preview = "";
}
return obj;
};
/**
* Destroy the plugin.
*
* @returns {void}
*/
var destroy = function() {
$('#' + id).unbind();
$('#preview_' + id).remove();
binurl;
block = false;
blockTitle = false;
blockDescription = false;
cache = {};
images = "";
isExtern = false;
photoNumber = 0;
firstPosted = false;
isActive = false;
isCrawling = false;
id = "";
};
var trim = function(str) {
return str.replace(/^\s+|\s+$/g, "");
};
var escapeHTML = function(unsafe_str) {
return unsafe_str
.replace(/&/g, '&amp;')
.replace(/</g, '&lt;')
.replace(/>/g, '&gt;')
.replace(/\"/g, '&quot;')
.replace(/\[/g, '&#91;')
.replace(/\]/g, '&#93;')
.replace(/\'/g, '&#39;'); // '&apos;' is not valid HTML 4
};
// Initialize LinkPreview
init();
return {
// make crawlText() accessable from the outside.
crawlText: function(text) {
crawlText(text);
},
addBBCodeToPreview: function(content) {
addBBCodeToPreview(content);
},
destroy: function() {
destroy();
}
};
};
$.fn.linkPreview.defaults = {
defaultDescription: "Enter a description",
defaultTitle: "Enter a title"
};
/**
* Get in a textarea the previous word before the cursor.
*
* @param {object} text Textarea element.
* @param {integer} caretPos Cursor position.
*
* @returns {string} Previous word.
*/
function returnWord(text, caretPos) {
var index = text.indexOf(caretPos);
var preText = text.substring(0, caretPos);
// If the last character is a space or enter remove it
// We need this in friendica for the url preview.
var lastChar = preText.slice(-1)
if ( lastChar === " "
|| lastChar === "\n"
|| lastChar === "\r"
)
{
preText = preText.substring(0, preText.length -1);
}
// Replace new line with space.
preText = preText.replace(/\n/g, " ");
if (preText.indexOf(" ") > 0) {
var words = preText.split(" ");
return words[words.length - 1]; //return last word
}
else {
return preText;
}
}
/**
* Get in a textarea the previous word before the cursor.
*
* @param {string} id The ID of a textarea element.
* @returns {sting|null} Previous word or null if no word is available.
*/
function getPrevWord(id) {
var text = document.getElementById(id);
var caretPos = getCaretPosition(text);
var word = returnWord(text.value, caretPos);
if (word != null) {
return word
}
}
/**
* Get the cursor position in an text element.
*
* @param {object} ctrl Textarea element.
* @returns {integer} Position of the cursor.
*/
function getCaretPosition(ctrl) {
var CaretPos = 0; // IE Support
if (document.selection) {
ctrl.focus();
var Sel = document.selection.createRange();
Sel.moveStart('character', -ctrl.value.length);
CaretPos = Sel.text.length;
}
// Firefox support
else if (ctrl.selectionStart || ctrl.selectionStart == '0') {
CaretPos = ctrl.selectionStart;
}
return (CaretPos);
}
})(jQuery);
// @license-end