haste-server/static/application.js

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JavaScript
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///// represents a single document
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var heist_document = function() {
this.locked = false;
};
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heist_document.prototype.load = function(key, callback) {
var _this = this;
$.ajax('/documents/' + key, {
type: 'get',
dataType: 'json',
success: function(res) {
_this.locked = true;
_this.data = res.data;
var high = hljs.highlightAuto(res.data);
callback({
value: high.value,
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key: key,
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language: high.language
});
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},
error: function(err) {
callback(false);
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}
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});
};
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heist_document.prototype.save = function(data, callback) {
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if (this.locked) {
return false;
}
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this.data = data;
var _this = this;
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$.ajax('/documents', {
type: 'post',
data: data,
dataType: 'json',
success: function(res) {
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_this.locked = true;
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var high = hljs.highlightAuto(data);
callback({
value: high.value,
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key: res.key,
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language: high.language
});
}
});
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};
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///// represents the paste application
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var heist = function(appName) {
this.appName = appName;
this.$textarea = $('textarea');
this.$box = $('#box');
this.$code = $('#box code');
this.configureShortcuts();
};
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// TODO add key of commands
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// Set the page title - include the appName
heist.prototype.setTitle = function(ext) {
var title = ext ? this.appName + ' - ' + ext : this.appName;
document.title = title;
};
// Remove the current document (if there is one)
// and set up for a new one
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heist.prototype.newDocument = function(hideHistory) {
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this.doc = new heist_document();
this.$box.hide();
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if (!hideHistory) {
window.history.pushState(null, this.appName, '/');
}
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this.setTitle();
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this.$textarea.val('').show().focus();
}
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// Load a document and show it
heist.prototype.loadDocument = function(key) {
var _this = this;
_this.doc = new heist_document();
_this.doc.load(key, function(ret) {
if (ret) {
_this.$code.html(ret.value);
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var title = ret.key;
if (ret.language) {
title += ' - ' + ret.language;
}
_this.setTitle(title);
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_this.$textarea.val('').hide();
_this.$box.show();
}
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else {
_this.newDocument();
}
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});
};
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// Duplicate the current document - only if locked
heist.prototype.duplicateDocument = function() {
if (this.doc.locked) {
var currentData = this.doc.data;
this.newDocument();
this.$textarea.val(currentData);
}
};
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// Lock the current document
heist.prototype.lockDocument = function() {
var _this = this;
this.doc.save(this.$textarea.val(), function(ret) {
if (ret) {
_this.$code.html(ret.value);
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var title = ret.key;
if (ret.language) {
title += ' - ' + ret.language;
}
_this.setTitle(title);
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window.history.pushState(null, _this.appName + '-' + ret.key, '/' + ret.key);
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_this.$textarea.val('').hide();
_this.$box.show();
}
});
};
// Configure keyboard shortcuts for the textarea
heist.prototype.configureShortcuts = function() {
var _this = this;
this.$textarea.keyup(function(evt) {
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// ^L or ^S for lock
if (evt.ctrlKey && (evt.keyCode === 76 || evt.keyCode === 83)) {
evt.preventDefault();
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_this.lockDocument();
}
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// ^N for new document
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else if (evt.ctrlKey && evt.keyCode === 78) {
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evt.preventDefault();
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_this.newDocument();
}
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// ^D for duplicate - only when locked
else if (_this.doc.locked && evt.ctrlKey && evt.keyCode === 68) {
evt.preventDefault();
_this.duplicateDocument();
}
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});
};
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// TODO handle not found gracefully
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// TODO refuse to lock empty documents
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///// Tab behavior in the textarea - 2 spaces per tab
$(function() {
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$('textarea').keydown(function(evt) {
if (evt.keyCode === 9) {
evt.preventDefault();
var myValue = ' ';
// http://stackoverflow.com/questions/946534/insert-text-into-textarea-with-jquery
// For browsers like Internet Explorer
if (document.selection) {
this.focus();
sel = document.selection.createRange();
sel.text = myValue;
this.focus();
}
// Mozilla and Webkit
else if (this.selectionStart || this.selectionStart == '0') {
var startPos = this.selectionStart;
var endPos = this.selectionEnd;
var 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();
}
}
});
});