我正在尝试向 Firefox 开发工具添加“编辑 html”按钮。在 chrome://browser/content/devtools/inspector/inspector.xul 我们有：
<popupset id="inspectorPopupSet">
<!-- Used by the Markup Panel, the Highlighter and the Breadcrumbs -->
<menupopup id="inspector-node-popup">
<menuitem id="node-menu-copyinner"
label="&inspectorHTMLCopyInner.label;"
accesskey="&inspectorHTMLCopyInner.accesskey;"
oncommand="inspector.copyInnerHTML()"/>
<menuitem id="node-menu-copyouter"
label="&inspectorHTMLCopyOuter.label;"
accesskey="&inspectorHTMLCopyOuter.accesskey;"
oncommand="inspector.copyOuterHTML()"/>
<menuitem id="node-menu-copyuniqueselector"
label="&inspectorCopyUniqueSelector.label;"
accesskey="&inspectorCopyUniqueSelector.accesskey;"
oncommand="inspector.copyUniqueSelector()"/>
<menuseparator/>
<menuitem id="node-menu-delete"
label="&inspectorHTMLDelete.label;"
accesskey="&inspectorHTMLDelete.accesskey;"
oncommand="inspector.deleteNode()"/>
<menuseparator/>
<menuitem id="node-menu-pseudo-hover"
label=":hover" type="checkbox"
oncommand="inspector.togglePseudoClass(':hover')"/>
<menuitem id="node-menu-pseudo-active"
label=":active" type="checkbox"
oncommand="inspector.togglePseudoClass(':active')"/>
<menuitem id="node-menu-pseudo-focus"
label=":focus" type="checkbox"
oncommand="inspector.togglePseudoClass(':focus')"/>
</menupopup>
</popupset>
我正在尝试使用此 chrome.manifest 添加叠加层：
content devtooltweaks content/
style chrome://browser/content/devtools/framework/toolbox.xul chrome://devtooltweaks/content/devToolStyle.css
content chrome://browser/content/devtools/inspector/inspector.xul chrome://devtooltweaks/content/inspectorOverlay.xul
我的检查员Overlay.xul：
<?xml version="1.0" encoding="utf-8"?>
<overlay id="helloworldOverlay" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<popupset id="inspectorPopupSet">
<menupopup id="inspector-node-popup">
<menuitem id="node-menu-edititem"
label="Edit HTML"
accesskey="E"
oncommand="alert('hi');"/>
</menupopup>
</popupset>
</overlay>
样式 css 正在工作，这个覆盖 应该向内置的检查器面板添加一个菜单项，但看起来它没有做任何事情。这个覆盖有什么问题吗，或者改变检查员有什么限制吗？