macos - 将复选框添加到 NSOpenPanel

Question

我想向NSOpenPanel添加一个复选框，然后在接收所选文件时查询其状态。我怎样才能做到这一点？

此外，希望能够根据当前文件选择启用或禁用该复选框。

Answer 1

基于 Joshua Nozzi 和 Mark Alldrit 答案的完整解决方案:

NSOpenPanel* openDlg = [NSOpenPanel openPanel];
NSButton *button = [[NSButton alloc] init];
[button setButtonType:NSSwitchButton];
button.title = NSLocalizedString(@"I am a checkbox", @"");
[button sizeToFit];
[openDlg setAccessoryView:button];
openDlg.delegate = self;
[openDlg beginSheetModalForWindow:self.window completionHandler:^(NSInteger result) 
{
    openDlg.delegate = nil; // TODO: Check if this is necessary
    if (result != NSFileHandlingPanelOKButton) return;
    BOOL checkboxOn = (((NSButton*)openDlg.accessoryView).state == NSOnState); 
    // Do something
}];

NSOpenSavePanelDelegate:

- (void)panelSelectionDidChange:(id)sender {
    NSOpenPanel *panel = sender;
    NSButton *button = (NSButton*)panel.accessoryView;
    // Update button based on panel selection
}