WPF popup on ListBoxItem - wpf

I have a MiniToolbar popup that shows up at Mouseover on a ListBoxItem, it needs to show just under the item.
(a MouseOver trigger also sets the IsSelected property on the items)
I tried two options :
define the popup on the items DataTemplate
define the popup on the ControlTemplate for the ListBoxItem
Both options work fine, however I was wondering if the popup was recreated each time ??
(please advise)
I think it would be better to define the popup in the ControlTemplate of the containing ListBox rather than the ListBoxItem ?
I tried this, but could not find the binding expression for placement property relative to the SelectedItem (it shows up at the bottom of the ListBox, not bottom of ListBoxItem).
Any suggestions ?
thanks in advance.
Michael.

The popup is created one time for each list box item in both cases.
I would not suggest that you use single popup for all items in the CotnrolTemplate for the list box because it significantly complicates things. But if you still want to do so, you can set Placement="Custom" on you popup and specify CustomPopupPlacementCallback. In that callback you can calculate the placement using the position of currently selected item.

Related

In the ListBoxItem template, how do I change the visual state of the item based upon IsSelected?

I'm wanting to increase the size of a selected item in a ListBox and show extra controls. I'm not sure how the ListBoxItem template knows whether the item is selected or not. In the past I would wrap all of my items in radio buttons but it is very clunky and didn't utilize the ListBox selection at all. I would really like to have a better way. Ideally, I would like the change to be in a visual state so I can animate the transition.
Thanks.
ListBoxItem already defines the visual states Selected and Unselected. See ListBox Styles and Templates for how the ControlTemplate in ListBoxItem's default style handles these states.

wpf selecting controls inside a listbox

I have a textbox and some labels inside the data template of bounded listbox.
When I click on any label the whole item is highlighted in blue, but when I click directly on a different textbox the selection does not change.
Is there a way to make the selection of the listbox change even when a textbox is clicked?
thanks
This is what I've exactly asked few days ago, see post: "WPF: Trigger SelectedIndex changed whilst clicking on any control within a ListBoxItem area"
basically there are few solutions, using code behind and XAML, but I've not verified latter approach yet
The reason is because the TextBox handles the click event in order to receive focus. There are a number of ways to handle this, including but not limited to:
stop the TextBox handling mouse events (which prevents the user from focussing it using the mouse)
use an eventhandler when the TextBox gains focus (or PreviewClick or similar), to select the parent ListItem

How to create WPF button that drops down a listBox

I'm trying to create a button in main window that would look like a globe, which would allow user to select his/her location. I want it to display a listBox when clicked on it just below the button itself.
Any hints on how to do this?
Probably the simplest way to do this is restyle a ComboBox and then restyle the ToggleButton in the ComboBox and remove the editable textbox.
This will avoid you having the implement the functions of the ComboBox for your popup.
Try using this as a starting point.
Another Approach would be to use the Expander Control with a list box in it
Link
OR
You could play with the Listbox's visibility property

Listbox styling and control template issue in silverlight

I have to change Listbox's control templated in a way that it can look like below image
alt text http://www.freeimagehosting.net/uploads/05598e4d35.png
i have added togglebutton in listboxdatatemplate...
have one stackpanel in listbox style template...
so structure is like
border - stackpanel - grid - itemcontainer[boder-togglerbutton]
now to make first and last item curved... what are the ways...
if i make stackpanel border curved... when firstitem is selected and its background is changed... it shows a square inside outer border... so i am not able to get look showed below...
any idea?? how to get design done in the way with listbox tht can be showed like image above...
in image 1,3 and 4 items are selected and others are in normal mode...
-thanks in advance
I did it with a listbox in Blend inside of the ItemTemplate by creating a leftBorder and a right Border that are in the same space. The leftBorder is defined with cornerRadius 10,0,0,10 and the right with cornerRadius 0,10,10,0. I then set them both to opacity 0 (you can use visibility if you prefer) and set a ChangePropertyAction on both of thier loaded events conditional on the first and last item in your list.
That is the bad part, I did need to do it conditional on the items in your list but you could define another property and set that to first and last or create multiple templates that you set if there are no more items in the list from the control (not in the template).
If you think this may be interesting to you, let me know and I will post on my blog as well as try to make a couple of adjustments for your situation. I am not sure how to upload a project to here.

Showing a tooltip on a combobox from the itemtemplate (WPF)

I have a ComboBox with a DataTemplate. The DataTemplate has two controls, each of which has a ToolTip attached to it. The list of items of the ComboBox has the tooltips as expected when you hover over each control. But the selected item area on top of the ComboBox does not display the tooltips, though the controls are rendered as expected. Is there a way to force the tooltips to be displayed?
If you're using Mole or something similar, make sure that your control with the attached ToolTIp has IsHitTestVisible="True". Otherwise, the control is not listening for mouse events and will not recognize that the ToolTip should be shown in the first place.
You may also want to look at binding the ToolTip of the selected item to the ContentPresenter in the ComboBox since, after selection, your SelectedItem becomes the content of the ComboBox. You may need to override the ComboBox template and make sure the ContentPresenter can accept mouse input in order to force your ToolTip's visibility.

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