/**
 * editable_selects.js
 *
 * Copyright 2009, Moxiecode Systems AB
 * Released under LGPL License.
 *
 * License: http://tinymce.moxiecode.com/license
 * Contributing: http://tinymce.moxiecode.com/contributing
 */

var TinyMCE_EditableSelects = {
    editSelectElm : null,

    init : function() {
        var nl = document.getElementsByTagName("select"), i, d = document, o;

        for (i=0; i<nl.length; i++) {
            if (nl[i].className.indexOf('mceEditableSelect') != -1) {
                o = new Option(tinyMCEPopup.editor.translate('value'), '__mce_add_custom__');

                o.className = 'mceAddSelectValue';

                nl[i].options[nl[i].options.length] = o;
                nl[i].onchange = TinyMCE_EditableSelects.onChangeEditableSelect;
            }
        }
    },

    onChangeEditableSelect : function(e) {
        var d = document, ne, se = window.event ? window.event.srcElement : e.target;

        if (se.options[se.selectedIndex].value == '__mce_add_custom__') {
            ne = d.createElement("input");
            ne.id = se.id + "_custom";
            ne.name = se.name + "_custom";
            ne.type = "text";

            ne.style.width = se.offsetWidth + 'px';
            se.parentNode.insertBefore(ne, se);
            se.style.display = 'none';
            ne.focus();
            ne.onblur = TinyMCE_EditableSelects.onBlurEditableSelectInput;
            ne.onkeydown = TinyMCE_EditableSelects.onKeyDown;
            TinyMCE_EditableSelects.editSelectElm = se;
        }
    },

    onBlurEditableSelectInput : function() {
        var se = TinyMCE_EditableSelects.editSelectElm;

        if (se) {
            if (se.previousSibling.value != '') {
                addSelectValue(document.forms[0], se.id, se.previousSibling.value, se.previousSibling.value);
                selectByValue(document.forms[0], se.id, se.previousSibling.value);
            } else
                selectByValue(document.forms[0], se.id, '');

            se.style.display = 'inline';
            se.parentNode.removeChild(se.previousSibling);
            TinyMCE_EditableSelects.editSelectElm = null;
        }
    },

    onKeyDown : function(e) {
        e = e || window.event;

        if (e.keyCode == 13)
            TinyMCE_EditableSelects.onBlurEditableSelectInput();
    }
};
