In situations where multiple processes need to be completed sequentially, multiple progressbars can be used together. This can be displayed either as an animated bar with diagonal movement (O4) or a AJAX-style circular spinner (O5-6, O8). Indeterminate indicators are used to provide feedback that a process is underway but that the current status cannot be tracked accurately enough to provide specific feedback on the current level of completeness. A determinate progressbar should never cycle from empty to full to empty again on a timer - if the status of a process cannot be accurately tracked, an indeterminate progress indicator should be used. A small circle that fills with a color can also be used as a determinate indicator (O7). Variations of this indicator can range from a simple bar with or without labels (O1) to a bar with embedded text with the value complete (O2) or a segmented bar (O3) if the feedback is not continuous. These are usually shown as a horizontal bar that fills from left to right as the process heads towards completion and should fill completely when the process is complete. There are two basic types of progress indicators: determinate and indeterminate.ĭeterminate indicators provide specific feedback on where in the process the system is at any given time. Progress indicators can be placed in a wide range of UI contexts - dialog box, page, menu or even within a form element. Progress indicators are meant to give a user feedback about the status of an operation that may not be instantaneous (completed in less than 500ms).
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