Difference between revisions of "Projects/Usability/HIG/ListView"

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(Created page with "__NOTOC__ == Purpose == A list view allows the user to select one or more items from a list. A list view may be used for single selection (users select one item from a list o...")
 
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== Purpose ==
 
== Purpose ==
A list view allows the user to select one or more items from a list. 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 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 multiple selection only.
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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.  
 
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<span style="color:blue">HT: Recommendation should be checked</span>
<span style="color:blue">HT:</span>  
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Todo: Add Check box feature
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== Guidelines ==
 
== Guidelines ==

Revision as of 14:37, 21 June 2013


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

Code snippets


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