{"id":72,"date":"2010-08-31T17:42:56","date_gmt":"2010-08-31T15:42:56","guid":{"rendered":"https:\/\/office.intu.io\/newsite\/en\/circular-list\/"},"modified":"2025-12-21T09:20:46","modified_gmt":"2025-12-21T08:20:46","slug":"circular-list","status":"publish","type":"post","link":"https:\/\/intu.io\/blog\/circular-list\/","title":{"rendered":"Circular List"},"content":{"rendered":"

Users needs overview over a data set suitable for tabular display or they want to select an option before performing a command with the selected item.<\/p>\n

Interactive Example<\/h2>\n

<\/embed><\/p>\n

Press the Up and Down buttons to scroll the list or drag the thumb.<\/p>\n

Context<\/h2>\n

The user needs browse a tabular data set. A list may also be used as a preselection of items to perform actions with.<\/p>\n

Forces<\/h2>\n

The data set may be too large so a listbox may not be sufficient to browse the data set.<\/p>\n

Solution<\/h2>\n

Provide a scrollable list capable of displaying column headers and a scroll bar. If the list loses focus the previously selected entry remains highlighted, however in a different colour. If a list contains more entries than it is capable to display a scrollbar shall be added to its right-hand side. Pressing one of the elements of the scrollbar shall select the associated list entry if there has not been a selection before. Selecting a list entry also updates the scrollbar. Pressing a list entry shall never directly cause an action, e.g. a call to be issued.<\/p>\n

As shown in the interactive example above, the list is circular regarding its scrolling behaviour: When the first element is displayed and the user presses the Up arrow key, the list jumps to display the last item \u2014\u00a0the same is true for scrolling down.<\/p>\n

Safety Impact<\/h2>\n

Lists are also a method of letting the user review an action before actually carrying it out. Therefore, lists used properly may reduce the risk of performing actions inadvertently.<\/p>\n

The list pattern for safety-relevant environment does not use inertial scrolling, i.e., by grabbing and dragging the list as seen on the iPhone\/iPad. The reason for this is that inertial scrolling hides controls \u2014\u00a0on an infrequently used device in safety-relevant environments this means that inexperienced users may forget how to use certain controls, especially if they introduce new ways of interaction.<\/p>\n

Usability Impact<\/h2>\n

Serves error prevention instead of requiring the user to recover from an error.<\/p>\n

Your opinion<\/h2>\n

Feel free to provide your comments, reports of usage of this pattern, or feedback in general!<\/p>\n","protected":false},"excerpt":{"rendered":"

<\/p>\n

This pattern provides the user with a circular list to scroll a limited data set.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[16,24,104],"class_list":["post-72","post","type-post","status-publish","format-standard","hentry","category-patterns","tag-behavioural","tag-capacitive","tag-resistive"],"yoast_head":"\nCircular List - intuio Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/intu.io\/blog\/circular-list\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Circular List - intuio Blog\" \/>\n<meta property=\"og:description\" content=\"This pattern provides the user with a circular list to scroll a limited data set.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/intu.io\/blog\/circular-list\/\" \/>\n<meta property=\"og:site_name\" content=\"intuio Blog\" \/>\n<meta property=\"article:published_time\" content=\"2010-08-31T15:42:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-21T08:20:46+00:00\" \/>\n<meta name=\"author\" content=\"intuio\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@intuio\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"intuio\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/intu.io\\\/blog\\\/circular-list\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/intu.io\\\/blog\\\/circular-list\\\/\"},\"author\":{\"name\":\"intuio\",\"@id\":\"https:\\\/\\\/intu.io\\\/blog\\\/#\\\/schema\\\/person\\\/9be7154f89eb1c979c8e224658ddd11e\"},\"headline\":\"Circular List\",\"datePublished\":\"2010-08-31T15:42:56+00:00\",\"dateModified\":\"2025-12-21T08:20:46+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/intu.io\\\/blog\\\/circular-list\\\/\"},\"wordCount\":357,\"commentCount\":0,\"keywords\":[\"Behavioural\",\"Capacitive\",\"Resistive\"],\"articleSection\":[\"patterns\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/intu.io\\\/blog\\\/circular-list\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/intu.io\\\/blog\\\/circular-list\\\/\",\"url\":\"https:\\\/\\\/intu.io\\\/blog\\\/circular-list\\\/\",\"name\":\"Circular List - 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