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