Nyan Cat emoticon bindings for Conkeror.

nyan.js

/*
  Google now uses "~=[,,_,,]:3" as an emoticon for Nyan Cat animation
  on Google Plus. It's handy to have this character sequence bound to
  a key. Thanks to Benjamin Slade for the idea.

  Nyan Cat is bound by default to "N". As it is to be used when
  editing a text field, you'll need to use "C-z" first, so the
  sequence is: "C-z N".

  Quick hack based on Conkeror source code; namely,
  edit_field_in_external_editor from econtent-buffer-input.js.

  Copyleft (<C) 2011-Eternity, Jacek "TeMPOraL" Zlydach.

  (Technically, this code is on either Mozilla Public License v. 1.1,
  GPL v. 2 or LGPL v. 2.1; see COPYING from Conkeror's source code for
  details.)

*/

function insert_nyancat_into_field (buffer, elem, doc) {
    if (! doc) {
        if (elem instanceof Ci.nsIDOMHTMLInputElement) {
            var type = (elem.getAttribute("type") || "").toLowerCase();
            if (type == "hidden" || type == "checkbox" || type == "radio")
                throw interactive_error("Element is not a text field.");
        } else if (!(elem instanceof Ci.nsIDOMHTMLTextAreaElement))
            throw interactive_error("Element is not a text field.");
    }

    if (elem instanceof Ci.nsIDOMHTMLInputElement ||
        elem instanceof Ci.nsIDOMHTMLTextAreaElement)
    {
        elem.value = elem.value + "~=[,,_,,]:3"; //insert Nyan Cat here...
    } else {
        elem.innerHTML = elem.innerHTML + "~=[,,_,,]:3"; //...and here.
    }

}

interactive("insert-nyan-cat",
            "Inserts Nyan Cat into currently focused textfield. Nyanyanyanyanyanyan!",
            function (I) {
                var b = I.buffer;
                var e = b.focused_element;
                var frame = b.focused_frame;
                var doc = null;
                if (e) {
                    if (e.contentEditable == 'true')
                        doc = e.ownerDocument;
                } else if (frame && frame.document.designMode &&
                           frame.document.designMode == "on") {
                    doc = frame.document;
                    e = frame.document.body;
                }
                yield insert_nyancat_into_field(b, e, doc);
            });

define_key(default_global_keymap, "N", "insert-nyan-cat"); //change your binding here.