Try this, open up jscripts/editor.js, find:
this.fonts["Arial"] = "Arial";
this.fonts["Courier"] = "Courier";
this.fonts["Impact"] = "Impact";
this.fonts["Tahoma"] = "Tahoma";
this.fonts["Times New Roman"] = "Times New Roman";
this.fonts["Trebuchet MS"] = "Trebuchet MS";
this.fonts["Verdana"] = "Verdana";
And add the fonts you want in a similar fashion.
Make sure you clear your browser cache after you've made the changes.
thank you very much, I'm searching for add fonts to 1.2.14 editor
it's very easy
Remember to stick to fonts that most of your visitors will have installed.