如何在 swift 中删除查找、搜索 Web 菜单

Question

class CustomPDFView: PDFView {
    var toolMode: ToolMode = .none
    
    override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
        switch toolMode {
        case .comment, .highlight, .translate :
            return false
            
        default :
            if action == #selector(copy(_:)) || action == #selector(selectAll(_:)) {
                return true
            }
            return false
        }
    }
}

class originlaView: UIViewController {
    override func buildMenu(with builder: UIMenuBuilder) {
        super.buildMenu(with: builder)
        builder.remove(menu: .share)
        //builder.remove(menu: .lookup)
    }
}

我清除了“查找”菜单，但“翻译”、“搜索Web”菜单都被清除了。
我想保留“翻译”菜单，但它似乎包含在“查找”菜单中。

我还尝试在“canPerformAction()”中分别清除“lookup”和“searchWeb”，但这不起作用。

Answer 1

以下

buildMenu

的实现将导致“查找”和“搜索网页”菜单不再出现。代码中的注释解释了它是如何工作的。

override func buildMenu(with builder: any UIMenuBuilder) {
    // Start by updating the Lookup menu.
    // The Lookup menu actually consists of the "Find Selection", "Look Up", and "Translate" commands.
    // The "Search Web" menu gets added to the Lookup menu after this buildMenu is called.

    // The goal is to show only the "Translate" menu. "Find Selection" is not normally shown so we only need
    // to remove the "Look Up" menu and somehow prevent the "Search Web" menu from being added automatically.

    // The following code locates the "Translate" command from within the "Lookup" menu. An updated array of
    // child commands is returned consisting of just the "Translate" command. As a side effect of returning
    // the modified list of children, the "Search Web" menu is no longer added. This achieves the goal of only
    // showing the "Translate" menu.
    builder.replaceChildren(ofMenu: .lookup) { oldChildren in
        // Enumerate the original child commands of the Lookup menu. As of this writing this will include:
        // "Find Selection"
        // "Look Up"
        // "Translate"
        for menuElement in oldChildren {
            if let command = menuElement as? UICommand {
                if command.action == NSSelectorFromString("_translate:") {
                    // This is the "Translate" command. Return just this command as the updated children of
                    // the "Lookup" menu.
                    return [command]
                }
            }
        }

        // If the "Translate" command isn't found, return the original children as a fallback. This results
        // in the standard menu being shown.
        return oldChildren
    }

    // Also remove the Share menu
    builder.remove(menu: .share)
}