// ==UserScript==
// @name                  [DEBUG] Web Content Editing Mode (DesignMode)
// @name:zh-CN            [DEBUG] 网页内容编辑模式 (DesignMode)
// @version               1.1.3.20210925
// @namespace             laster2800
// @author                Laster2800
// @description           Quickly turn designMode on/off via the context menu, see https://developer.mozilla.org/en-US/docs/Web/API/Document/designMode
// @description:zh-CN     通过右键菜单快速切换 designMode 状态，详见 https://developer.mozilla.org/zh-CN/docs/Web/API/Document/designMode
// @homepageURL           https://greasyfork.org/zh-CN/scripts/430949
// @supportURL            https://greasyfork.org/zh-CN/scripts/430949/feedback
// @license               LGPL-3.0
// @include               *
// @grant                 none
// @run-at                context-menu
// ==/UserScript==
(function() {
'use strict'
const target = top.document.designMode === 'on' ? 'off' : 'on'
const executed = new Set()
const exec = win => {
if (executed.has(win)) return
try {
executed.add(win)
win.document.designMode = target
for (let i = 0; i < win.frames.length; i++) {
exec(win.frames[i])
}
} catch { /* cross-origin frame */ }
}
exec(top)
})()