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//==============================================================================
// Markdown tags to replace
//==============================================================================
var markdownTags = {
"bold": ["**", "**"],
"italic": ["*", "*"],
"header": ["## ", "\n"],
"link": ["[", "](href)"],
"image": [""],
"code": ["\n~~~\n", "\n~~~\n"],
"quote": ["\n> ", ""],
"list_ul": ["* ", ""],
"list_ol": ["1. ", ""]
};
//==============================================================================
// Set caret position in editor
//==============================================================================
function setCaretPosition(position) {
window.setTimeout(function() {
document.getElementById("content-editor").focus();
document.getElementById("content-editor").setSelectionRange(position, position);
}, 50);
}
//==============================================================================
// Insert markdown around text in editor
//==============================================================================
function markdownReplace(tagname) {
var element = document.activeElement;
if(element.nodeName === 'TEXTAREA') {
var selectionStart = element.selectionStart;
var selectionEnd = element.selectionEnd;
var selectedText = element.value.substring(selectionStart, selectionEnd);
var content = element.value;
element.value = content.slice(0, selectionStart) + markdownTags[tagname][0] + selectedText + markdownTags[tagname][1] + content.slice(selectionEnd);
setCaretPosition(selectionStart + markdownTags[tagname][0].length + selectedText.length + markdownTags[tagname][1].length);
}
}
//==============================================================================
// Insert emoticon after cursor in editor
//==============================================================================
function emoticonReplace(emoticon) {
var element = document.activeElement;
if(element.nodeName === 'TEXTAREA') {
var selectionStart = element.selectionStart;
var selectionEnd = element.selectionEnd;
var content = element.value;
element.value = content.slice(0, selectionStart) + emoticon + content.slice(selectionEnd);
setCaretPosition(selectionStart + emoticon.length);
}
}
//==============================================================================
// Keep server-side session active if the user is writing a long text
//==============================================================================
addEventListener("DOMContentLoaded", function() {
setInterval(function() {
var Request = new XMLHttpRequest();
Request.open("HEAD", "", true);
Request.send();
}, 300000);
}, false);
//==============================================================================
// Insert tab indent into editor if <tab> is pressed
//==============================================================================
addEventListener("DOMContentLoaded", function() {
if(document.getElementById("content-editor")) {
var element = document.getElementById("content-editor");
element.addEventListener('keydown', function(e) {
if(e.keyCode === 9 && !e.ctrlKey && !e.shiftKey) {
var selectionStart = element.selectionStart;
var selectionEnd = element.selectionEnd;
var content = element.value;
element.value = content.substring(0, selectionStart) + "\t" + content.substring(selectionEnd);
setCaretPosition(selectionStart + 1);
e.preventDefault();
}
}, false);
}
}, false);
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