haste-server/static/application.js

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///// represents a single document
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var haste_document = function() {
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this.locked = false;
};
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// Get this document from the server and lock it here
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haste_document.prototype.load = function(key, callback, lang) {
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var _this = this;
$.ajax('/documents/' + key, {
type: 'get',
dataType: 'json',
success: function(res) {
_this.locked = true;
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_this.key = key;
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_this.data = res.data;
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var high = lang ? hljs.highlight(lang, res.data) : hljs.highlightAuto(res.data);
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callback({
value: high.value,
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key: key,
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language: lang || high.language
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});
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},
error: function(err) {
callback(false);
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}
});
};
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// Save this document to the server and lock it here
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haste_document.prototype.save = function(data, callback) {
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if (this.locked) {
return false;
}
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this.data = data;
var _this = this;
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$.ajax('/documents', {
type: 'post',
data: data,
dataType: 'json',
success: function(res) {
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_this.locked = true;
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_this.key = res.key;
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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 haste = function(appName, options) {
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this.appName = appName;
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this.baseUrl = window.location.href; // since this is loaded first
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this.$textarea = $('textarea');
this.$box = $('#box');
this.$code = $('#box code');
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this.options = options;
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this.configureShortcuts();
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};
// Set the page title - include the appName
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haste.prototype.setTitle = function(ext) {
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var title = ext ? this.appName + ' - ' + ext : this.appName;
document.title = title;
};
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// Show the light key
haste.prototype.lightKey = function() {
var text = '';
text += '<em>' + this.appName + '</em>';
text += '^s - save<br>';
text += '^n - new';
$('#key').html(text);
};
// Show the full key
haste.prototype.fullKey = function() {
var text = '';
text += '<em>' + this.appName + '</em>';
text += '^n - new<br>';
text += '^d - duplicate<br>';
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if (this.options.twitter) {
text += '^t - twitter';
}
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$('#key').html(text);
};
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// Remove the current document (if there is one)
// and set up for a new one
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haste.prototype.newDocument = function(hideHistory) {
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this.$box.hide();
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this.doc = new haste_document();
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if (!hideHistory) {
window.history.pushState(null, this.appName, '/');
}
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this.setTitle();
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this.lightKey();
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this.$textarea.val('').show('fast', function() {
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this.focus();
});
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};
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// Map of common extensions
haste.extensionMap = {
'rb': 'ruby',
'py': 'python'
};
// Map an extension to a language
haste.prototype.lookupExtension = function(ext) {
var match = haste.extensionMap[ext];
return match; // if not found, will auto-detect
};
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// Load a document and show it
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haste.prototype.loadDocument = function(key) {
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// Split the key up
var parts = key.split('.', 2);
// Ask for what we want
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var _this = this;
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_this.doc = new haste_document();
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_this.doc.load(parts[0], function(ret) {
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if (ret) {
_this.$code.html(ret.value);
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var title = ret.key;
if (ret.language) {
title += ' - ' + ret.language;
}
_this.setTitle(title);
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_this.fullKey();
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_this.$textarea.val('').hide();
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_this.$box.show().focus();
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}
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else {
_this.newDocument();
}
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}, this.lookupExtension(parts[1]));
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};
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// Duplicate the current document - only if locked
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haste.prototype.duplicateDocument = function() {
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if (this.doc.locked) {
var currentData = this.doc.data;
this.newDocument();
this.$textarea.val(currentData);
}
};
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// Lock the current document
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haste.prototype.lockDocument = function() {
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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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_this.fullKey();
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window.history.pushState(null, _this.appName + '-' + ret.key, '/' + ret.key);
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_this.$textarea.val('').hide();
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_this.$box.show().focus();
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}
});
};
// Configure keyboard shortcuts for the textarea
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haste.prototype.configureShortcuts = function() {
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var _this = this;
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$(document.body).keydown(function(evt) {
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// ^L or ^S for lock
if (evt.ctrlKey && (evt.keyCode === 76 || evt.keyCode === 83)) {
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if (_this.$textarea.val().replace(/^\s+|\s+$/g, '') !== '') {
evt.preventDefault();
_this.lockDocument();
}
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}
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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(!_this.doc.key);
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}
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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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// ^T for redirecting to twitter
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else if (_this.options.twitter && _this.doc.locked && evt.ctrlKey && evt.keyCode == 84) {
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evt.preventDefault();
window.open('https://twitter.com/share?url=' + encodeURI(_this.baseUrl + _this.doc.key));
}
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});
};
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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();
}
}
});
});