CPTableColumn Header Menu

[david.ri...@enquora.com]

We have tableview columns that need menus (for sort, filtering and copying/fill options).

I've found no useful examples in objective-j or objective-c but it looks necessary to subclass CPTableHeaderView and provide a custom delegate. 

The mouse click delegate method for headers doesn't expose the specific column clicked and it would be necessary to manually position and manage a menu at the cursor co-ordinates.

Providing the menu on a simple mouse click feels most natural to me, but these columns are also draggable and I suspect some users would assume dragging isn't possible if they are immediately presented with a menu on clicking. A right-click menu seems to avoid this.

I would like to implement this functionality either in IB or code - which again suggests a subclass with custom delegate.

Does anyone have experience with this situation? Thoughts?

Am I missing anything that doesn't require subclassing?

[Martin Carlberg]

Hi David,

There is a ’mouseDownInHeaderOfTableColumn:’ delegate method that you might use. You will get which column header that is clicked. If that is not sufficient I guess you have to subclass the table view header view itself.

I also think that providing the menu on a simple click feel most natural but you might need to test this in real life to get a feeling if it will work. You could maybe open the menu on mouse up or after a small delay (with no mouse movement) on mouse down.

- Martin

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[david.ri...@enquora.com]

There is a ’mouseDownInHeaderOfTableColumn:’ delegate method that you might use. You will get which column header that is clicked. If that is not sufficient I guess you have to subclass the table view header view itself.

 

Thanks Martin - I completely overlooked that somehow. What is the best way to locate the mouse position so the menu can be launched with origin matching the normal offset as used by a context-menu? Add a tracking area using the headerView's frame rectangle?

 

[david.ri...@enquora.com]

On Thursday, July 7, 2016 at 6:19:36 AM UTC-6, mrcarlberg wrote:

I also think that providing the menu on a simple click feel most natural but you might need to test this in real life to get a feeling if it will work. You could maybe open the menu on mouse up or after a small delay (with no mouse movement) on mouse down.

I will try adding a Help/Instructional view as the first item in the menu. I'd like to dismiss the menu immediately if a drag operation begins.

I expected to see a delegate method for the start of the drag operation but I don't see anything that will help.

Looks as though it will require some effort to create a polished effect. 

[david.ri...@enquora.com]

The correct way to implement this is by adding a menu to the headerView of a tableColumn. 

It isn't now clear to me what the usage case is for a menu attached to CPTableHeaderView, but this isn't it.