/**
 * link editor support for kissy editor ,innovation from google doc and ckeditor
 * @author yiminghe@gmail.com
 */
KISSY.add("editor/plugin/link/index", function (S, Editor, Bubble, Utils, DialogLoader) {

    var $ = S.all,
        tipHtml = '<a ' +
            'href="" '
            + ' target="_blank" ' +
            'class="{prefixCls}editor-bubble-url">' +
            '在新窗口查看' +
            '</a>  –  '
            + ' <span ' +
            'class="{prefixCls}editor-bubble-link {prefixCls}editor-bubble-change">' +
            '编辑' +
            '</span>   |   '
            + ' <span ' +
            'class="{prefixCls}editor-bubble-link {prefixCls}editor-bubble-remove">' +
            '去除' +
            '</span>';

    function checkLink(lastElement) {
        lastElement = $(lastElement);
        return lastElement.closest('a', undefined);
    }

    function LinkPlugin(config) {
        this.config = config || {};
    }

    S.augment(LinkPlugin, {
        pluginRenderUI: function (editor) {

            var prefixCls = editor.get('prefixCls');
            editor.addButton("link", {
                tooltip: "插入链接",
                listeners: {
                    click: function () {
                        showLinkEditDialog();

                    }
                },
                mode: Editor.WYSIWYG_MODE
            });

            var self = this;

            function showLinkEditDialog(selectedEl) {
                DialogLoader.useDialog(editor, "link",
                    self.config,
                    selectedEl);
            }

            editor.addBubble("link", checkLink, {
                listeners: {
                    afterRenderUI: function () {
                        var bubble = this,
                            el = bubble.get("contentEl");

                        el.html(S.substitute(tipHtml, {
                            prefixCls: prefixCls
                        }));

                        var tipUrl = el.one("." + prefixCls + "editor-bubble-url"),
                            tipChange = el.one("." + prefixCls + "editor-bubble-change"),
                            tipRemove = el.one("." + prefixCls + "editor-bubble-remove");

                        //ie focus not lose
                        Editor.Utils.preventFocus(el);

                        tipChange.on("click", function (ev) {
                            showLinkEditDialog(bubble.get("editorSelectedEl"));
                            ev.halt();
                        });

                        tipRemove.on("click", function (ev) {
                            Utils.removeLink(editor, bubble.get("editorSelectedEl"));
                            ev.halt();
                        });

                        bubble.on("show", function () {
                            var a = bubble.get("editorSelectedEl");
                            if (!a) {
                                return;
                            }
                            var href = a.attr(Utils._ke_saved_href) ||
                                a.attr("href");
                            tipUrl.html(href);
                            tipUrl.attr("href", href);
                        });
                    }

                }
            });
        }
    });

    return LinkPlugin;
}, {
    requires: ['editor', '../bubble/',
        './utils', '../dialog-loader/', '../button/']
});