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A html5 contextmenu library
このスクリプトは単体で利用できません。右のようなメタデータを含むスクリプトから、ライブラリとして読み込まれます: // @require https://update.greasyfork.org/scripts/33034/705360/GM_context.js
Firefox is going to remove contextmenu support! See https://bugzilla.mozilla.org/show_bug.cgi?id=1372276
A JavaScript library to create native HTML5 contextmenu in the browser. This library is designed for userscripts.
It uses native HTML5 <menu> and <menuitem> to build the context menu, so:
GM_context.add({
context: ["image"],
items: [{
type: "submenu",
label: "Reverse image search",
items: [{
label: "TinEye",
onclick(e) {
// ...
}
}, {
type: "separator"
}, {
label: "Google",
onclick(e) {
// ...
}
}]
}]
});
Add a menu. The menu object contains following properties:
context: array of string. A list of valid context type that the context menu should apply to. Possible values are:
page: when there is no other context type matched.image: match images.link: match links.editable: match editable target.selection: when part of the page is selected.If this property is missing, the menu is globally applied.
items: array of object. A list of items. See Define a menu item.
oncontext: function. An event handler to handle contextmenu event, which would be called after context property is matched. The function may return false to not show the menu.
Remove the menu.
Update the property of an item. If changes object contains items, it would replace all sub-items with it.
const myCheckbox = {
type: "checkbox",
label: "A checkbox"
};
GM_context.add({items: [myCheckbox]});
function toggleCheckbox() {
GM_context.update(myCheckbox, {
checked: !myCheckbox.checked
});
}
Add a sub-item to parent.
parent: Must be submenu, radiogroup, or the menu itself.item: The item to add. See Define a menu item.position: Where the item should insert to. Negative value is allowed. Default to parent.items.length.Remove a sub-item from parent.
parent: Must be submenu, radiogroup, or the menu itself.item: The item to remove.An item may have following properties:
checked: boolean. Only available to checkbox and radiogroup's items.disabled: boolean. To disable an item.icon: string. Image URL, used to provide a picture to represent the command.items: array of object. Define sub-items. Only available to submenu and radiogroup type. A submenu may contain any type of the items, but the items of radiogroup can only define label, checked, and value properties.label: string. The label of the item. The label may contain a special string %s which would be replaced with the value of window.getSelection().onclick: function. Called when the item is clicked. It would recieve a contextmenu event not a click event. Also, checkbox type items would recieve a boolean to indicate if the item is checked.onchange: function. Only available to radiogroup. The handler would recieve following params:
contextmenu event.type: string. Define different type of menuitem. Available values are:
command: A normal menuitem. (default)submenu: A submenu.separator: A separator.checkbox: An item which can be checked/unchecked.radiogroup: A group of checkbox. When an item is checked, the others are unchecked. It is suggested to separate radiogroup from other items, or display it in a submenu.value: string. Only available to radiogroup's items. The value is passed to onchange handler as the second parameter.
0.2.1 (Sep 21, 2017)
0.2.0 (Sep 21, 2017)
oncontext handler..addItem, .removeItem, update.0.1.0 (Sep 8, 2017)