I've got a ListView with nested items - some have buttons on them.
When I tap on a button, the button callback fires but also the list-item action - which expands and shows the children.
How can I prevent that?
If a button is tapped, I just want the button callback.
If non button area of the list-item is tapped, I want the default children items expansion.
Related
I need the ability for a user to press and set an ListView item's checkbox independently of clicking on the item. If they press on the checkbox I will add/remove the checkmark and take some action. If they press on the item text I can take another action.
I can do this with a ListBox no problem with built in functionality. I can't figure out how to do it with a ListView. How is it done?
I can put the following code in the ListView1ItemClickEx to know when the user is clicking on the image. Maybe I can just change the image to a checkmark?
if (ItemObject->Name == "I") {
ShowMessage("Item Image clicked");
}
But I don't know how to change that particular items image (e.g. I could just toggle between a checkmark image and an unchecked image) at runtime.
The picture below is for clarity. Clicking anywhere in the red box will change the items checkbox. For the ListBox clicking anywhere in the blue box will fire the OnClick event and not change the checkbox. I want that same behavior in the ListView.
Ok, Remy answered this related question and it helped me solve this issue. Now I can make the ListView have a checkbox that functions like that of the ListBox. I do it by toggling the item image whenever the user presses (or clicks on) the image area of an item.
When the user clicks an items image I trap it (per Remy's code in the ListView1ItemClickEx event) and toggle it from 0->1 or 1->0 in a vector at reference ItemIndex (e.g. myVector[ItemIndex] = 0) and then I completely rebuild the ListView (clear it and build from scratch).
I thought I'd have to remember where in the list I had scrolled down to and after refreshing the ListView I'd have to scroll to that point in code - but, that isn't the case. I don't know why but after the refresh I'm still at the point in the list where I clicked an item image. It makes it work and feel exactly like a check box.
It works great in iOS, Android, and Windows.
p.s. I forgot to mention that you need to treat any Header's like they are items in your vector that keeps up with each items' image (0 or 1). Otherwise adding headers gets you out of sync and clicking an item's image will toggle some other item's image.
I've been trying to change the text for my back button. I've changed everything from the previous view's back button text, to the visible view's back button text, to setting the back button equal to a new button and changing its text. Alas, all I get is the text of the previous views title.
You cannot set the title of the back button item, but you can replace the back button directly.
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "Back", style: .Plain, target: nil, action: nil)
The trick is to set it on the pushing view controller, not on the one displaying the back button item.
You can set it in viewDidLoad of your pushing view controller. If you want to custom the back button according to the pushed view controllers, set it in prepareForSegue.
I have created a custom (themed) NSWindow, by creating a borderless window and then recreating all elements of the window border/background inside the content view. I've created the window widgets (close box, zoom box, minimize box) on top of my own fake title bar using -standardWindowButton:forStyleMask:.
Trouble is, when a sheet is presented on top of my custom window (e.g. "save changes...", those buttons do not receive the clicks.
Does anybody know how I can tell NSWindow not to intercept the clicks in my minimize box? It works with a standard NSWindow. When a sheet is up, I can still send both of them to the dock, or zoom the window out.
I thought maybe there's special code in the content view that ignores clicks in subviews while a sheet is up. But it seems as if -hitTest: is called on the content view and returns the minimize widget, but the widget's action never gets triggered.
I guess I could just replace the content view and perform the action in the content view's hitTest if it is the minimize widget ... but that seems a bit ugly.
I have a XAML ListBox, a TextBox inside the ItemTemplate. A user edits text inside the TextBox, and then presses a button in the application bar. How do I keep the focus on the TextBox after the button in the application bar was pushed?
You don't. You set it back afterwards.
You can use Focus() method to do this.
You can also use the SelectionStart and SelectionLength to highlight a specific part of the text.
I have a page with a couple of widgets on it, each of which, when clicked, brings up a yui popup menu: If I click on widget 1, its menu comes up. If I now click on widget 2, widget 1's menu gets a hide event, and widget 2's menu gets a show event and comes up. I'd like to change this so that, when widget 1's menu is up, it must be explicitly dismissed by a click on the page background (and/or, perhaps, another click on the widget or the escape key) before the menu attached to widget 2 is allowed to appear.
I've set up some beforeShowEvent and beforeHideEvent handlers on the menus, hoping to be able to use some method (a global variable? ick) of keeping track of when a menu is present and showing or hiding accordingly, but it's not working -- these handlers can't tell the difference between a click on the page background and a click on widget 2 (at least, not as I've done it so far). Is there any way to do what I'm trying to do? Thanks!
I think that a combination of clicktohide: false
Boolean indicating if the Menu will automatically be hidden if the user clicks outside of it. This property is only applied when the "position" configuration property is set to dynamic and is automatically applied to all submenus.
and keepopen: true
Boolean indicating if the menu should remain open when clicked.
will take care of this.
http://developer.yahoo.com/yui/menu/#configref