Can anyone offer assistance with adding a delete button to a tableview in xcode? I can create the button but cannot get it to delete anything in the table. I'm using the default code that comes with the Master Detail Application but have changed the content of the table using an NSObject.
This should be the default behaviour of the edit button.
self.navigationItem.leftBarButtonItem = self.editButtonItem;
This will allow you to click and delete any item in the list after it is pressed.
Unless I am misunderstanding how you are using the table item list.
Related
I need an idea, please. I have a Details form which shows the fields of a model (about 10 fields in all). There are three modes in which I could show this view - in mode "Edit", in mode "New" (which, of course, is like an edit but without values), and in mode "View" (no changes allowed, just labels).
I could of course create three Details pages, one for each mode, and call them selectively, but I would like to have just one and pass the "DocumentMode" parameter to it. That View should bind to that mode and selectively show/hide controls, probably like "DocumentMode = VIEW => Show labels" or "DocumentMode = EDIT => Show Entry or Editor, show DatePicker, TimePicker, etc".
My question is this: How do I show/hide these groups of controls depending on the DocumentMode parameter ? Which would be the best way to do this ? I could probably bind the "IsVisible" property to my documentMode parameter, but I think that is a really ugly solution (and I assume that regardless of whether the controls are used or not in a specific mode, they will all be loaded anyway).
Thank you.
Alex
I think you can use a Listview or Collectionview to represent your data because you mentioned that you have 10 fields.
In addition, you said you need a "new" button, so you can set it at the top of the app as a button, when you click the button then you jump to another page which is blank and you can add the data.
This must refer to the shell you may need to set a navigation.
Then the "view" and the "edit" you can use the property SelectionChanged to control the item, I mean when you click the item in collectionview, the SelectionChanged method can be triggered and turn to another page which can show the detail about the item you clicked. In the page you can view and edit the data.
Here are some articles you might be able to use: Listview, Collectionview, Shell
If you have more information to add, please kindly share with me.
When right clicking on a cell view in a view based table view with an assigned menu the cell's row gets a blue outline and the context menu appears. How do I get the index of that row? The property clickedRow only works for cell based table views.
Note: my question is significantly different in that I need a solution for menu updates es explained previously:
I need the clicked row in the menuNeedsUpdate function when creating the new menu.
It appears that clickedRow indeed also works for view based table views, but it's not yet set in menuNeedsUpdate. So it cannot be used to adjust the items in the menu (e.g. show specific items only that apply to the clicked row). However, you can use the menu validation to enable/disable entries (there the clicked row value is set finally).
I'm using jqgrid inline edit in my application which is also accessed in mobile. Since the user access space in the mobile is small i dont want the pop-up's throwing in the middle.
So, basically when the user did not select the row and click the edit/delete button the warning dialog is thrown "Please, select a row". Now i did not want the alert. Just when the user click on the edit/delete button without selecting the row it should stand still. Nothing happens.
Is this possible? How can i achieve this?
I would suggest you another way. One can disable or hide Delete/Edit buttons until a row will be selected. Inside of loadComplete one should test whether any row is selected (it could be selected if you use reloadGrid with {current:true} option for example). In the case you can disable or hide Delete/Edit buttons once more.
The demo created for the old answer shows how to disable navigator buttons by adding ui-state-disabled class. Another demo created for the answer demonstrates in interactive form how to show/hide navigator buttons.
I have a NSPopupButton that displays a drop down menu when clicked. This menu is populated from an NSArray. Now if I click on one of the items in the drop down Menu, I can select it and determine what is selected etc.
What I want to do is when the user clicks on the NSpopupbutton, update the drop down menu and then have the user pick one of the items.
I am having trouble finding how to call a IBAction method when I simply select the drop down menu ( not clicking any one item in it). The clicking of an item in the menu results in an IBAction, but I want just the clicking of the down arrow in the NSPopupButton to trigger an action. Any ideas ? Thanks.
The NSPopupButton sends an NSPopUpButtonWillPopUpNotification when clicked. Have your controller object listen for that notification and respond by updating the dropdown menu.
The accepted answer worked, though now it's called NSPopUpButton.willPopUpNotification
In Swift 4.x, my code looked like:
NotificationCenter.default.addObserver(self,
selector: #selector(dropdownMenuOpened),
name: NSPopUpButton.willPopUpNotification,
object: nil)
This seems like it would be an easy thing to do but I am having a lot of trouble getting a button to respond to events while in a CPTableView. Here is the initialization code:
//deleteColumn is hooked up to CIB table column.
[deleteColumn setEditable:YES];
[deleteColumn setWidth:24];
var deleteButton = [[CPButton alloc] initWithFrame:CGRectMakeZero()];
[deleteButton setTarget:self];
[deleteButton setAction:#selector(deleteClicked:)];
[deleteColumn setDataView:deleteButton];
I then have this selector code in the same view controller:
- (void)deleteClicked:(id)sender
{
console.log(sender);
}
It seems the table view is squashing any mouse clicks inside it because I don't get the console log when I click the button.
Is there an easy way to do this? All I want is a button that deletes corresponding row in the table.
The CPTableView takes over the action of the button for its own purposes. Try listening for the regular edit delegate message CPTableViewDataSource:tableView:setObjectValue:forTableColumn:row: in your table delegate.