source: trunk/library/tiny_mce/plugins/autolink/editor_plugin_src.js @ 4829

/**
 * editor_plugin_src.js
 *
 * Copyright 2011, Moxiecode Systems AB
 * Released under LGPL License.
 *
 * License: http://tinymce.moxiecode.com/license
 * Contributing: http://tinymce.moxiecode.com/contributing
 */

(function() {
        tinymce.create('tinymce.plugins.AutolinkPlugin', {
        /**
        * Initializes the plugin, this will be executed after the plugin has been created.
        * This call is done before the editor instance has finished it's initialization so use the onInit event
        * of the editor instance to intercept that event.
        *
        * @param {tinymce.Editor} ed Editor instance that the plugin is initialized in.
        * @param {string} url Absolute URL to where the plugin is located.
        */

        init : function(ed, url) {
                var t = this;

                // Internet Explorer has built-in automatic linking
                if (tinyMCE.isIE)
                        return;

                // Add a key down handler
                ed.onKeyDown.add(function(ed, e) {
                        if (e.keyCode == 13)
                                return t.handleEnter(ed);
                        if (e.shiftKey && e.keyCode == 48)
                                return t.handleEclipse(ed);
                        });

                // Add a key up handler
                ed.onKeyUp.add(function(ed, e) {
                        if (e.keyCode == 32)
                                return t.handleSpacebar(ed);
                        });
               },

                handleEclipse : function(ed) {
                        this.parseCurrentLine(ed, -1, '(', true);
                },

                handleSpacebar : function(ed) {
                         this.parseCurrentLine(ed, 0, '', true);
                 },

                handleEnter : function(ed) {
                        this.parseCurrentLine(ed, -1, '', false);
                },

                parseCurrentLine : function(ed, end_offset, delimiter, goback) {
                        var r, end, start, endContainer, bookmark, text, matches, prev, len;

                        // We need at least five characters to form a URL,
                        // hence, at minimum, five characters from the beginning of the line.
                        r = ed.selection.getRng().cloneRange();
                        if (r.startOffset < 5) {
                                // During testing, the caret is placed inbetween two text nodes. 
                                // The previous text node contains the URL.
                                prev = r.endContainer.previousSibling;
                                if (prev == null) {
                                        if (r.endContainer.firstChild == null || r.endContainer.firstChild.nextSibling == null)
                                                return;

                                        prev = r.endContainer.firstChild.nextSibling;
                                }
                                len = prev.length;
                                r.setStart(prev, len);
                                r.setEnd(prev, len);

                                if (r.endOffset < 5)
                                        return;

                                end = r.endOffset;
                                endContainer = prev;
                        } else {
                                endContainer = r.endContainer;

                                // Get a text node
                                if (endContainer.nodeType != 3 && endContainer.firstChild) {
                                        while (endContainer.nodeType != 3 && endContainer.firstChild)
                                                endContainer = endContainer.firstChild;

                                        r.setStart(endContainer, 0);
                                        r.setEnd(endContainer, endContainer.nodeValue.length);
                                }

                                if (r.endOffset == 1)
                                        end = 2;
                                else
                                        end = r.endOffset - 1 - end_offset;
                        }

                        start = end;

                        do
                        {
                                // Move the selection one character backwards.
                                r.setStart(endContainer, end - 2);
                                r.setEnd(endContainer, end - 1);
                                end -= 1;

                                // Loop until one of the following is found: a blank space, &nbsp;, delimeter, (end-2) >= 0
                        } while (r.toString() != ' ' && r.toString() != '' && r.toString().charCodeAt(0) != 160 && (end -2) >= 0 && r.toString() != delimiter);

                        if (r.toString() == delimiter || r.toString().charCodeAt(0) == 160) {
                                r.setStart(endContainer, end);
                                r.setEnd(endContainer, start);
                                end += 1;
                        } else if (r.startOffset == 0) {
                                r.setStart(endContainer, 0);
                                r.setEnd(endContainer, start);
                        }
                        else {
                                r.setStart(endContainer, end);
                                r.setEnd(endContainer, start);
                        }

                        text = r.toString();
                        matches = text.match(/^(https?:\/\/|ssh:\/\/|ftp:\/\/|file:\/|www\.)(.+)$/i);

                        if (matches) {
                                if (matches[1] == 'www.') {
                                        matches[1] = 'http://www.';
                                }

                                bookmark = ed.selection.getBookmark();

                                ed.selection.setRng(r);
                                tinyMCE.execCommand('mceInsertLink',false, matches[1] + matches[2]);
                                ed.selection.moveToBookmark(bookmark);

                                // TODO: Determine if this is still needed.
                                if (tinyMCE.isWebKit) {
                                        // move the caret to its original position
                                        ed.selection.collapse(false);
                                        var max = Math.min(endContainer.length, start + 1);
                                        r.setStart(endContainer, max);
                                        r.setEnd(endContainer, max);
                                        ed.selection.setRng(r);
                                }
                        }
                },

                /**
                * Returns information about the plugin as a name/value array.
                * The current keys are longname, author, authorurl, infourl and version.
                *
                * @return {Object} Name/value array containing information about the plugin.
                */
                getInfo : function() {
                        return {
                                longname : 'Autolink',
                                author : 'Moxiecode Systems AB',
                                authorurl : 'http://tinymce.moxiecode.com',
                                infourl : 'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/autolink',
                                version : tinymce.majorVersion + "." + tinymce.minorVersion
                        };
                }
        });

        // Register plugin
        tinymce.PluginManager.add('autolink', tinymce.plugins.AutolinkPlugin);
})();