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haste-server/static/application.js
2011-11-18 15:44:28 -05:00

152 lines
3.6 KiB
JavaScript

///// represents a single document
var heist_document = function() {
this.locked = false;
};
heist_document.prototype.save = function(data, callback) {
if (this.locked) {
return false;
}
this.data = data;
var _this = this;
$.ajax('/documents', {
type: 'post',
data: data,
dataType: 'json',
success: function(res) {
_this.locked = true;
var high = hljs.highlightAuto(data);
callback({
value: high.value,
uuid: res.uuid,
language: high.language
});
}
});
};
///// represents the paste application
var heist = function(appName) {
this.appName = appName;
this.$textarea = $('textarea');
this.$box = $('#box');
this.$code = $('#box code');
this.configureShortcuts();
};
// Set the page title - include the appName
heist.prototype.setTitle = function(ext) {
var title = ext ? this.appName + ' - ' + ext : this.appName;
document.title = title;
};
// Remove the current document (if there is one)
// and set up for a new one
heist.prototype.newDocument = function(ext) {
this.doc = new heist_document();
this.$box.hide();
this.setTitle();
this.$textarea.val('').show().focus();
}
// Duplicate the current document - only if locked
heist.prototype.duplicateDocument = function() {
if (this.doc.locked) {
var currentData = this.doc.data;
this.newDocument();
this.$textarea.val(currentData);
}
};
// 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);
_this.setTitle(ret.language + '-' + ret.uuid);
// TODO add to push state
_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) {
// ^L or ^S for lock
if (evt.ctrlKey && (evt.keyCode === 76 || evt.keyCode === 83)) {
evt.preventDefault();
_this.lockDocument();
}
// ^N for new document
else if (evt.ctrlKey && evt.keyCode === 78) {
evt.preventDefault();
_this.newDocument();
}
// ^D for duplicate - only when locked
else if (_this.doc.locked && evt.ctrlKey && evt.keyCode === 68) {
evt.preventDefault();
_this.duplicateDocument();
}
});
};
// TODO handle not found gracefully
// TODO refuse to lock empty documents
// TODO support for browsers without pushstate
// TODO support for push state navigation
///// Tab behavior in the textarea - 2 spaces per tab
$(function() {
$('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();
}
}
});
});