Instance Method

panel:shouldEnableURL:

For NSOpenPanel delegates, asks the delegate whether the specified URL should be enabled in the panel. This method is not called for NSSavePanel delegates; all URLs are always disabled.

Declaration

- (BOOL)panel:(id)sender shouldEnableURL:(NSURL *)url;

Parameters

sender

The panel asking whether the URL should be enabled.

url

The URL to be checked.

Return Value

YES to allow the URL to be enabled in the panel; otherwise, NO.

Discussion

Implementations of this method should be fast to avoid stalling the user interface. Use panel:validateURL:error: instead if processing will take a long time.

See Also

Running Panels

- panel:validateURL:error:

For NSSavePanel delegates, asks the delegate for file URL validation when the user chooses the Save button. For NSOpenPanel delegates, asks the delegate for file URL validation once for each selected filename (or directory) when the user chooses the Open button.

- panel:didChangeToDirectoryURL:

Informs the delegate that the user changed the selected directory to the directory located at the specified URL. The URL may be nil if the current URL can’t be represented by an NSURL object.

- panel:userEnteredFilename:confirmed:

Tells the delegate that the user confirmed a filename choice by clicking Save in a Save panel.

- panel:willExpand:

Tells the delegate that the Save panel is about to expand or collapse because the user clicked the disclosure triangle that displays or hides the file browser.

- panelSelectionDidChange:

Tells the delegate that the user changed the selection in the specified Save panel.