Delegate to be used with the SetURLEnableFilter method.
EnableURLDelegate(panel as EinhugurMacOSBridge.NSOpenPanel,
url as EinhugurCoreBridge.NSURL) as Boolean
Parameters
- panel
- Handle to the Open panel.
- url
- The URL to be checked.
Returns
- Boolean
- You should return true if the URL should be selectable, else false.
Remarks
The delegate will be called for each URL in the Open panel, returning false will make the URL not selectable.
Implementations of this method should be fast to avoid stalling the user interface.
Public Function Filter(panel as EinhugurMacOSBridge.NSOpenPanel, url as EinhugurCoreBridge.NSURL) As Boolean
#Pragma DisableBackgroundTasks
#Pragma DisableBoundsChecking
ListBox1.AddRow(url.Path)
return not url.Path.EndsWith("test5.png")
End Function
In a more real world example your application could maintain Dictionary of currently open URLs, and prevent those from getting selected by quick dictionary lookup.
Note that if it will actually be selectable will also depend on the allowed file types set on the panel.