CKEDITOR.plugins.add("kityformula", {
    icons: 'kityformula', requires: ["dialog"],
    init: function(editor) {
        editor.addCommand("kityformula", new CKEDITOR.dialogCommand("kityformula"));
        editor.ui.addButton("kityformula", {
            label: "数学公式",//调用dialog时显示的名称
            command: "kityformula",
            icon: this.path + "/icons/kityformula.png"//在toolbar中的图标
        });

        if ( editor.contextMenu ) {
            editor.addMenuGroup( 'kityMathGroup' );
            editor.addMenuItem( 'mathEditorItem', {
                label: '编辑数学公式',
                icon: this.path + "/icons/kityformula.png",//在toolbar中的图标
                command: 'kityformula',
                group: 'kityMathGroup'
            });

            editor.contextMenu.addListener( function( element ) {
                if ( element.getAscendant( 'img', true ) ) {
                    return { mathEditorItem: CKEDITOR.TRISTATE_OFF };
                }
            });
        }

        CKEDITOR.dialog.add("kityformula", this.path + "dialogs/kityformula.js")

    }

});