Projects/Usability/HIG/ListView

Purpose

A list view is basically used to show some items. It offers orientation thereby and allows navigation without the need of other controls. Additionally, a list view may be used for single selection (users select one item from a list of mutually exclusive values) or multiple selection (selections in combination with the Shift key or Control key). However, because there is no common visual clue whether a list box’ mode is single or multiple and since other controls are more efficient for single selection, a list box should be used for single selection only. HT: Recommendation should be checked

Guidelines

• Use a list box for multiple selections with more than five options.
• Do not have blank list items; use meta-options, e.g. (None) instead.
• Place options that represent general options (e.g. All, None) at the beginning of the list.
• Provide extended multiple selection with Shift+Click or Ctrl+Click to select groups of contiguous or non-adjacent values, respectively.
• Sort list items in a logical order. Make sure sorting fits translation.

DE:

 QListView / QListWidget
 http://static.davidedmundson.co.uk/hig/widgets/QListView.png
 This can be single selection or multiple item selection
 This can be checkable or based on selected items.
 http://static.davidedmundson.co.uk/hig/widgets/QListView2.png
 This can also be in a tree with a QTreeView
 These can be more fancy (i.e Dolphin)
 QComboBox
 http://static.davidedmundson.co.uk/hig/widgets/QComboBox.png
 KComboBox is exactly the same but with optional auto-completion
 KEditListWidget
 http://static.davidedmundson.co.uk/hig/widgets/KEditListWidget.png
 KActionSelector
 http://static.davidedmundson.co.uk/hig/widgets/KActionSelector.png

HT: Todo: Add Check box feature

TP:

• Use the check box list if it is easy for users to know which items are checked at any given time, for one or more of these reasons:
  • There are no more than twice the number of options then are visible at a time
  • The options are well-known (for example months of a year or days of a week)
  • Usually the selected options are close to each other in the list
• In any other case, use the dual-list pattern because it allows users to easily see which items are selected at any point, without having to scroll through the available options