In order to implement some functionality that customers are asking for, I’m having to switch over to using the NSOpenPanel. So far so good.
However I want it to operate much like OpenDialog does, when calling “showModalWithin”. The closet function I could find is “beginSheetModalForWindow” and using Joe’s blocks plugin I was able to get this working, except it’s not modal! The rat of code continues to execute once the panel has been displayed.
Any tips, advise or suggestions on making it modal?
I don’t think native modals stop code execution. It was super helpful with MacDust because the code could run in a thread while the sheetmodal kept the user from changing any settings (and displayed a progress bar.)
Multiple times I’ve found Xojo’s interrupt code for a modal behavior to be more or less “in my way” since I can’t use a modal to display progress, and then close it when done.
I opened up my snippet library and found beginWithCompletionHandler: which may be of help. This method calls a block after the panel has closed (where you could run whatever you wanted to happen “after” the modal.)
Thanks for the suggestions. I understand what you mean about a sheet progress window, but in this case it’s an open dialog and so I would rather not have any code executed until the user has made their choice. Basically I want to introduce this without having to change too much of my Xojo application code (which uses the modal sheet version of the OpenDialog quite a lot).
beginWithCompletionHandler fires the block at the end, the same as beginSheetModalForWindow… There has to be something I’m missing.
Life is so funny, because I’ve been struggling with the same question on the last weekend. The usual strategy of polling does NOT work. Then I gave up. So if you find a solution I would be interested, too.
What about instead of the step-by-step and pausing on the modal, moving the actions after the modal to a separate method?
// Set up the open panel like it was OpenDialog
xOpenPanel.title = ""
xOpenPanel.completionAction = WeakAddressOf takeMyFiles
and somehow pass the files to takeMyFiles? (clearly this includes your customized opendialog -> NSOpenPanel stuff)
That way there’s nothing else to execute while the user is selecting files.
[code]// — Configure the OpenPanel
declare sub beginSheetModalForWindow lib AppKit selector “beginSheetModalForWindow:completionHandler:” ( handle as Ptr, window as integer, completionHandler as Ptr )
dim myBlock as Ptr = ObjcBlocks.createBlock( AddressOf completionHandler )
Awesome! There is an option in the NSOpenPanel to resolve Aliases! This means that now when a user selects an Alias I can bookmark the file. As opposed to before, where I can bookmark the Alias, but I don’t have access to the original file
runModal does the application modal style but of course they can’t be sheets. It might be better to switch to an event based implementation instead of fighting apples design, again assuming this is correctly interpreted.