Hi Anthony
May I suggest that an existing menu is extended instead of (potentially)
replaced by GM_registerMenuCommand() in greasemonkey4-polyfill.js? There
could be an existing menu created by the page or another (user)script
having an id different from 'gm-registered-menu'! An updated
GM_registerMenuCommand() extending such menus could look something like
below...
Below code will also create a sub-menu for each userscript [
GMC.getScriptName() is scriptname and GMC.getScriptIdentifier() is an
unique identifier based on script namespace and name ]. That is how I would
prefer it, but of course opinions on that part probably varies :-)
function GM_registerMenuCommand(caption, commandFunc, accessKey) {
if (!document.body) {
console.error('GM_registerMenuCommand got no body.');
return;
}
let menuContainer = null;
if (document.body.getAttribute('contextmenu')) {
// If existing context menu on body, don't replace but use it...
menuContainer =
document.querySelector('menu#'+document.body.getAttribute('contextmenu'));
}
if (!menuContainer) {
// if not already exist, create the "top menu container"
menuContainer = document.createElement("menu");
menuContainer.setAttribute('type', 'context');
menuContainer.id = 'gm-registered-menu';
document.body.appendChild(menuContainer);
}
document.body.setAttribute('contextmenu', menuContainer.id);
let scriptMenu =
document.querySelector('menu#menu'+GMC.getScriptIdentifier());
if (!scriptMenu) {
// if not already exist, create "sub-menu" for current userscript
scriptMenu = document.createElement("menu");
scriptMenu.setAttribute('label', GMC.getScriptName());
scriptMenu.id = 'menu'+GMC.getScriptIdentifier();
menuContainer.appendChild(scriptMenu);
}
// create menu item
let menuItem = document.createElement("menuitem");
menuItem.setAttribute('label', caption);
scriptMenu.appendChild(menuItem);
menuItem.addEventListener('click',commandFunc, false);
}
/Stig
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