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

(function() {
    tinymce.create('tinymce.plugins.Directionality', {
        init : function(ed, url) {
            var t = this;

            t.editor = ed;

            function setDir(dir) {
                var dom = ed.dom, curDir, blocks = ed.selection.getSelectedBlocks();

                if (blocks.length) {
                    curDir = dom.getAttrib(blocks[0], "dir");

                    tinymce.each(blocks, function(block) {
                        // Add dir to block if the parent block doesn't already have that dir
                        if (!dom.getParent(block.parentNode, "*[dir='" + dir + "']", dom.getRoot())) {
                            if (curDir != dir) {
                                dom.setAttrib(block, "dir", dir);
                            } else {
                                dom.setAttrib(block, "dir", null);
                            }
                        }
                    });

                    ed.nodeChanged();
                }
            }

            ed.addCommand('mceDirectionLTR', function() {
                setDir("ltr");
            });

            ed.addCommand('mceDirectionRTL', function() {
                setDir("rtl");
            });

            ed.addButton('ltr', {title : 'directionality.ltr_desc', cmd : 'mceDirectionLTR'});
            ed.addButton('rtl', {title : 'directionality.rtl_desc', cmd : 'mceDirectionRTL'});

            ed.onNodeChange.add(t._nodeChange, t);
        },

        getInfo : function() {
            return {
                longname : 'Directionality',
                author : 'Moxiecode Systems AB',
                authorurl : 'http://tinymce.moxiecode.com',
                infourl : 'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/directionality',
                version : tinymce.majorVersion + "." + tinymce.minorVersion
            };
        },

        // Private methods

        _nodeChange : function(ed, cm, n) {
            var dom = ed.dom, dir;

            n = dom.getParent(n, dom.isBlock);
            if (!n) {
                cm.setDisabled('ltr', 1);
                cm.setDisabled('rtl', 1);
                return;
            }

            dir = dom.getAttrib(n, 'dir');
            cm.setActive('ltr', dir == "ltr");
            cm.setDisabled('ltr', 0);
            cm.setActive('rtl', dir == "rtl");
            cm.setDisabled('rtl', 0);
        }
    });

    // Register plugin
    tinymce.PluginManager.add('directionality', tinymce.plugins.Directionality);
})();