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Motif and CDE 2.1 Style Guide Reference

Range Adjust Click Technique

Reference

Description

The range adjust click technique is an adjustment selection technique in which a range of elements already identified as the current selection region can be adjusted by identifying an adjustment point. The following describes the steps for mouse-based and keyboard-based techniques:

Mouse-based range adjust click technique
Click the ADJUST button at the adjustment point.

Keyboard-based range adjust click technique
With the cursor at the adjustment point, press Shift Select, Shift Space (unless in text), or Ctrl Shift Space.

Guidelines

Required
When the user is using the range adjust click technique, and the adjustment policy is to reselect:

  1. Determine the new selection region to be the range identified by the new anchor point and the adjustment point.

  2. Enlarge the new selection region to include the anchor region, if indicated by the anchor inclusion policy.

    3. Required
    When the user is using the range adjust click technique, and the adjustment policy is to enlarge, make the new selection region the larger of the following:

    1. The current selection region

    2. The region determined by the reselect adjustment policy

      3. Required
      When the user is using the range adjust click technique, and the adjustment policy is to balance:

      1. Move (if necessary) the anchor point so that it is at the end of the current selection region farthest from the adjustment point.

      2. Determine the new selection region to be the range identified by the new anchor point and the adjustment point.

      3. Enlarge the new selection region to include the anchor region, if the anchor point is unchanged and if indicated by the anchor inclusion policy.

        4. Required
        If the current selection region did not include an anchor element or if the anchor element is no longer in the selection region, identify the anchor element to be the element, if any, at the end of the range nearest the anchor point.

        Required
        After the user uses a mouse-based range adjust click technique, place the active cursor at one of the following:

        1. If it is a text cursor, at the point at which the ADJUST button is released

        2. If it is an element cursor, on the element at that end of the range

          3. Essential Related Topics

          For more information, see the Adjustment Techniques, Selection Policies, and Selection Techniques reference pages.

          Supplemental Related Topics

          For more information, see the Area Adjust Click Technique, Range Adjust Swipe Technique, Range Click Technique, Range Swipe Technique, Selection Models, Selection Modes, and Touch Adjust Click Technique reference pages.

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