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attachment preview: frontend work (works with frio)

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This commit is contained in:
rabuzarus 2019-02-01 19:18:08 +01:00
parent 0993f3e6ef
commit 07d1932efc
5 changed files with 613 additions and 28 deletions
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94
view/theme/frio/js/jot.js Normal file
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var linkPreview;
$(document).ready(function() {
linkPreview = $('#profile-jot-text').linkPreview();
});
/**
* Insert a link into friendica jot.
*
* @returns {void}
*/
function jotGetLink() {
var currentText = $("#profile-jot-text").val();
var noAttachment = '';
reply = prompt(aStr.linkurl);
if(reply && reply.length) {
// There should be only one attachment per post.
// So we need to remove the old one.
$('#jot-attachment-preview').empty();
$('#profile-rotator').show();
if (currentText.includes("[attachment") && currentText.includes("[/attachment]")) {
noAttachment = '&noAttachment=1';
}
// We use the linkPreview library to have a preview
// of the attachments.
linkPreview.crawlText(reply + noAttachment);
autosize.update($("#profile-jot-text"));
}
}
/**
* Get in a textarea the previous word before the cursor.
*
* @param {object} text Textarea elemet.
* @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 charachter is a space remove the one space
// We need this in friendica for the url preview.
if (preText.slice(-1) == " ") {
preText = preText.substring(0, preText.length -1);
}
// preText = preText.replace(/^\s+|\s+$/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 posiotion in an text element.
*
* @param {object} ctrl Textarea elemet.
* @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);
}