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Motif and CDE 2.1 Style Guide Certification Checklist

Data Transfer

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Allow any selectable element to be transferred.

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A copy operation should transfer the source elements to the target without affecting the original source element in any way.

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A move operation should transfer the source elements to the target and then remove them from the source.

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A link transfer operation should do one of the following:

  1. Transfer the source element to the target, keeping it linked (in an application-specific manner) to the original source element.

  2. Place a link to the source element (made and displayed in an application-specific manner) in the target without copying the source element.

    3. [ ]
    The insertion point for an operation that transfers data into a selection scope is determined as follows:

    1. For a mouse-based TRANSFER button primary transfer or drag-and-drop transfer, the insertion point is the pointer position when the TRANSFER button is released.

    2. For a transfer invoked via a menu (popped up via the MENU button) on a selection or object, the insertion point is the pointer position when the MENU button is pressed.

    3. If neither of the previous applies, the pointer position is the cursor position.

      If the insertion position is not on an object, then do one of the following:

      1. If insertions can happen only at a fixed place in the selection scope, the insertion point should be placed at that point (for example, append-only text).

      2. If the elements in the selection scope are ordered in some way, the insertion point should be moved (for each element inserted) so that the element may be inserted at the proper position.

        3. [ ]
        If the insertion point is on a selection, but not on an object, a transfer operation into the scope should have one of the following effects:

        1. If a link operation, link the selection to the source elements, if such links are supported by your application.

        2. If pending delete behavior is enabled, replace the contents of the selection by the transferred data or link (except possibly for a primary copy at the edge of the primary selection).

        3. Insert the transferred data or link at the insertion point.

          4. [ ]
          If the insertion point is neither on a selection nor on an object, a transfer operation should insert the transferred data or link at the insertion point.

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          If the elements are laid out in a linear manner, insert elements immediately prior to the insertion point.

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          If the target insertion point is within the region of the source elements, do not perform the transfer; instead, issue a warning signal.

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          If an operation that transfers data into a scope is selected from a menu popped up (via the MENU button) on neither an object nor a selection, issue a warning message if the insertion point is on an object.

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          When an object is moved or copied, transfer the contents of the object along with the object itself.

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          When a move operation is performed, remove the source elements only if the data transfer has completed successfully. If the data transfer operation has been canceled or it has failed, do not remove the source elements.

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          Do not select data transferred to a target as a result of a link or copy operation.

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          If the source elements used in a data transfer operation are selected, do not deselect them as a result of the operation.

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          Do not change the source elements used as the source of a copy or link operation.

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          When transferred data is inserted into a selection scope (not into objects within the scope) by using normal mode at a position disjoint from a selection, deselect the selected elements.

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          Inserting or pasting elements at a location disjoint from the selection should have no effect on the selection in add mode.

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          If a transfer operation uses an insertion point based on the position of the pointer (rather than the cursor), place the cursor at the pointer position used.

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          During a transfer operation, allow the data transferred to change its appearance or representation to suit the requirements of the target.

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          Allow the user to override the default operation of a TRANSFER button-based data transfer operation by using a modifier key. Table 4 lists these operations and overrides.

          Table 4. TRANSFER Button Overrides

          Operation Modifier Override
          Move Shift
          Copy Ctrl
          Link Ctrl Shift

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