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haste-server/static/application.js
twiclo f8c3a58b3a
Updated highlightjs to support many more languages (#6)
We updated highlight.min.js library to newer version (v9.12.0 -> 10.2.0) and added support for many languages. Updated extensionMap accordingly and also removed from it some unnecessary aliases, like 'json' since they are already natively supported by highlight.min.js library.
There also a new documentation page under docs/languages.md which lists all supported aliases.
2020-09-18 16:19:34 +02:00

384 lines
9.8 KiB
JavaScript

/* global $, hljs, window, document */
///// represents a single document
class haste_document {
constructor(app){
this.locked = false;
this.app = app;
}
// Escapes HTML tag characters
htmlEscape(s){
return s
.replace(/&/g, '&')
.replace(/>/g, '>')
.replace(/</g, '&lt;')
.replace(/"/g, '&quot;');
}
// Get this document from the server and lock it here
load(key, callback, lang){
let _this = this;
$.ajax(`${_this.app.baseUrl}documents/${key}`, {
type: 'get',
dataType: 'json',
success: function (res){
_this.locked = true;
_this.key = key;
_this.data = res.data;
let high;
try {
if (lang == 'txt'){
high = { value: _this.htmlEscape(res.data) };
}
else if (lang){
high = hljs.highlight(lang, res.data);
}
else {
high = hljs.highlightAuto(res.data);
}
}
catch (err){
// failed highlight, fall back on auto
high = hljs.highlightAuto(res.data);
}
callback({
value: high.value,
key: key,
language: high.language || lang,
lineCount: res.data.split('\n').length
});
},
error: function (){
callback(false);
}
});
}
// Save this document to the server and lock it here
save(data, callback){
if (this.locked)
return false;
this.data = data;
let _this = this;
$.ajax(`${_this.app.baseUrl}documents`, {
type: 'post',
data: data,
dataType: 'json',
contentType: 'application/json; charset=utf-8',
success: function (res){
_this.locked = true;
_this.key = res.key;
let high = hljs.highlightAuto(data);
callback(null, {
value: high.value,
key: res.key,
language: high.language,
lineCount: data.split('\n').length
});
},
error: function (res){
try {
callback($.parseJSON(res.responseText));
}
catch (e){
callback({ message: 'Something went wrong!' });
}
}
});
}
}
///// represents the paste application
class haste {
constructor(appName, options){
this.appName = appName;
this.$textarea = $('textarea');
this.$box = $('#box');
this.$code = $('#box code');
this.$linenos = $('#linenos');
this.options = options;
this.configureShortcuts();
this.configureButtons();
// If twitter is disabled, hide the button
if (!options.twitter) $('#box2 .twitter').hide();
this.baseUrl = options.baseUrl || '/';
}
// Set the page title - include the appName
setTitle(ext){
document.title = `${this.appName}${ext ? ` - ${ext}` : ''}`;
}
// Show a message box
showMessage(msg, cls){
let msgBox = $(`<li class="${cls || 'info'}">${msg}</li>`);
$('#messages').prepend(msgBox);
setTimeout(function (){
msgBox.slideUp('fast', function (){ $(this).remove(); });
}, 3000);
}
// Show the light key
lightKey(){
this.configureKey(['new', 'save']);
}
// Show the full key
fullKey(){
this.configureKey(['new', 'duplicate', 'twitter', 'raw']);
}
// Set the key up for certain things to be enabled
configureKey(enable){
let $this;
$('#box2 .function').each(function (){
$this = $(this);
for (const el of enable){
if ($this.hasClass(el)){
$this.addClass('enabled');
return true;
}
}
$this.removeClass('enabled');
});
}
// Remove the current document (if there is one)
// and set up for a new one
newDocument(hideHistory){
this.$box.hide();
this.doc = new haste_document(this);
if (!hideHistory){
window.history.pushState(null, this.appName, this.baseUrl);
}
this.setTitle();
this.lightKey();
this.$textarea.val('').show('fast', function (){
this.focus();
});
this.removeLineNumbers();
}
// Look up the extension preferred for a type
// If not found, return the type itself - which we'll place as the extension
lookupExtensionByType(type){
for (let key in haste.extensionMap){
if (haste.extensionMap[key] == type)
return key;
}
return type;
}
// Look up the type for a given extension
// If not found, return the extension - which we'll attempt to use as the type
lookupTypeByExtension(ext){
return haste.extensionMap[ext] || ext;
}
// Add line numbers to the document
// For the specified number of lines
addLineNumbers(lineCount){
let h = '';
for (let i = 0; i < lineCount; i++){
h += (i + 1).toString() + '<br/>';
}
$('#linenos').html(h);
}
// Remove the line numbers
removeLineNumbers(){
$('#linenos').html('&gt;');
}
// Load a document and show it
loadDocument(key){
// Split the key up
let parts = key.split('.', 2);
// Ask for what we want
let _this = this;
_this.doc = new haste_document(this);
_this.doc.load(parts[0], function (ret){
if (ret){
_this.$code.html(ret.value);
_this.setTitle(ret.key);
_this.fullKey();
_this.$textarea.val('').hide();
_this.$box.show().focus();
_this.addLineNumbers(ret.lineCount);
}
else {
_this.newDocument();
}
}, this.lookupTypeByExtension(parts[1]));
}
// Duplicate the current document - only if locked
duplicateDocument(){
if (this.doc.locked){
let currentData = this.doc.data;
this.newDocument();
this.$textarea.val(currentData);
}
}
// Lock the current document
lockDocument(){
let _this = this;
this.doc.save(this.$textarea.val(), function (err, ret){
if (err){
_this.showMessage(err.message, 'error');
}
else if (ret){
_this.$code.html(ret.value);
_this.setTitle(ret.key);
let file = _this.baseUrl + ret.key;
if (ret.language){
file += `.${_this.lookupExtensionByType(ret.language)}`;
}
window.history.pushState(null, `${_this.appName}-${ret.key}`, file);
_this.fullKey();
_this.$textarea.val('').hide();
_this.$box.show().focus();
_this.addLineNumbers(ret.lineCount);
}
});
}
configureButtons(){
let _this = this;
this.buttons = [
{
$where: $('#box2 .save'),
label: 'Save',
shortcutDescription: 'control + s',
shortcut: function (evt){
return evt.ctrlKey && (evt.keyCode == 83);
},
action: function (){
if (_this.$textarea.val().replace(/^\s+|\s+$/g, '') != ''){
_this.lockDocument();
}
}
},
{
$where: $('#box2 .new'),
label: 'New',
shortcut: function (evt){
return evt.ctrlKey && evt.keyCode == 78;
},
shortcutDescription: 'control + n',
action: function (){
_this.newDocument(!_this.doc.key);
}
},
{
$where: $('#box2 .duplicate'),
label: 'Duplicate & Edit',
shortcut: function (evt){
return _this.doc.locked && evt.ctrlKey && evt.keyCode == 68;
},
shortcutDescription: 'control + d',
action: function (){
_this.duplicateDocument();
}
},
{
$where: $('#box2 .raw'),
label: 'Just Text',
shortcut: function (evt){
return evt.ctrlKey && evt.shiftKey && evt.keyCode == 82;
},
shortcutDescription: 'control + shift + r',
action: function (){
window.location.href = `${_this.baseUrl}raw/${_this.doc.key}`;
}
},
{
$where: $('#box2 .twitter'),
label: 'Twitter',
shortcut: function (evt){
return _this.options.twitter && _this.doc.locked && evt.shiftKey && evt.ctrlKey && evt.keyCode == 84;
},
shortcutDescription: 'control + shift + t',
action: function (){
window.open(`https://twitter.com/share?url=${encodeURI(window.location.href)}`);
}
}
];
for (const button of this.buttons){
this.configureButton(button);
}
}
configureButton(options){
// Handle the click action
options.$where.click(function (evt){
evt.preventDefault();
if (!options.clickDisabled && $(this).hasClass('enabled')){
options.action();
}
});
// Show the label
options.$where.mouseenter(function (){
$('#box3 .label').text(options.label);
$('#box3 .shortcut').text(options.shortcutDescription || '');
$('#box3').show();
$(this).append($('#pointer').remove().show());
});
// Hide the label
options.$where.mouseleave(function (){
$('#box3').hide();
$('#pointer').hide();
});
}
// Configure keyboard shortcuts for the textarea
configureShortcuts(){
let _this = this;
$(document.body).keydown(function (evt){
for (const button of _this.buttons){
if (button.shortcut && button.shortcut(evt)){
evt.preventDefault();
button.action();
return;
}
}
});
}
}
// Map of common extensions
// Note: this list does not need to include anything that IS its extension,
// due to the behavior of lookupTypeByExtension and lookupExtensionByType
// Note: optimized for lookupTypeByExtension
haste.extensionMap = {
sh: 'bash', clike: 'c-like', coffee: 'coffeescript', cs: 'csharp', dpr: 'delphi',
erl: 'erlang', hs: 'haskell', js: 'javascript', kt: 'kotlin', tex: 'latex',
lsp: 'lisp', mk: 'makefile', md: 'markdown', mm: 'objectivec', phptemp: 'php-template',
pl: 'perl', txt: 'plaintext', py: 'python', pyrepl: 'python-repl', rb: 'ruby', rs: 'rust',
sc: 'scala', sm: 'smalltalk', ts: 'typscript', vbs: 'vbscript', html: 'xml', htm: 'xml',
};
///// Tab behavior in the textarea - 2 spaces per tab
$(function(){
$('textarea').keydown(function(evt){
if (evt.keyCode == 9){
evt.preventDefault();
let myValue = ' ';
// http://stackoverflow.com/questions/946534/insert-text-into-textarea-with-jquery
// For browsers like Internet Explorer
if (document.selection){
this.focus();
let sel = document.selection.createRange();
sel.text = myValue;
this.focus();
}
// Mozilla and Webkit
else if (this.selectionStart || this.selectionStart == '0'){
let startPos = this.selectionStart;
let endPos = this.selectionEnd;
let scrollTop = this.scrollTop;
this.value = this.value.substring(0, startPos) + myValue +
this.value.substring(endPos,this.value.length);
this.focus();
this.selectionStart = startPos + myValue.length;
this.selectionEnd = startPos + myValue.length;
this.scrollTop = scrollTop;
}
else {
this.value += myValue;
this.focus();
}
}
});
});