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| __NOTOC__
| | {{ Moved To Community | KDE_Visual_Design_Group/HIG/ListView }} |
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| == Purpose ==
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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>
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| == Guidelines ==
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| <span style="color:blue">Add subsections</span>
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| === Subsection 1 ===
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| * Prefer a list view to show items that belong together and in case of sufficient space.
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| * Alternate row color (use theme settings). Use different keys (e.g. page up/down) when more lists should be accessible.
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| * Enable browsing through list by cursor up/down.
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| * Do not have blank list items; use meta-options, e.g. (None) instead.
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| * Place options that represent general options (e.g. All, None) at the beginning of the list.
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| * Sort list items in a logical order. Make sure sorting fits translation.
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| * For lists with more than one column view headers and enable sorting by clicking the header. Show sort order in header.
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| * Always give list controls a label, positioned above or to the left of the list, in sentence capitalization. Provide an accelerator key in the label that allows the user to give focus directly to the list.
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| * Make the list control large enough that it can show at least four items at a time without scrolling.
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| * If the list appears in a dialog or utility window, consider making the window and the list within it resizable so that the user can choose how many list items are visible at a time without scrolling. Each time the user opens this dialog, set its dimensions to those that the user last resized it to.
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| === Selection ===
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| <span style="color:blue">Check the following against recommendation</span>
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| * Use the list view for selection if it is easy for users to know which items are checked at any given time, for one or more of these reasons:
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| ** There are no more than twice the number of options then are visible at a time
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| ** The options are well-known (for example months of a year or days of a week)
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| ** Usually the selected options are close to each other in the list
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| <span style="color:blue">Choose a) or b)</span>
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| * a) 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
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| * b) Use a list box for multiple selections with more than five options.
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| * Provide extended multiple selection with Shift+Click or Ctrl+Click to select groups of contiguous or non-adjacent values, respectively.
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| <span style="color:blue">Make sure that KCB is feasonable</span>
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| * Add 'KCheckBoxes' to list items.
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| ** KCB are flat (no frame, no shadow, no bevel) for clear differentiation from normal check boxes.
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| ** KCB are hidden by default, that means when no list item is selected.
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| ** KCB have a fade-in effect on mouse over to introduce themselves to users.
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| ** KCB are transparent and therby clearly part of the list item.
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| ** Legacy keyboard use applies to KCB as well. Thus, the whole item can be clicked to toggle option.
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| == Code snippets ==
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