Databases
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Postsdbo
PO
 

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    <p>There are two parts of the problem (as I see it :-)</p> <p>Usability: inventing UI-interaction/elements is prone to confusing users. In no particular order:</p> <ul> <li>the column header title is meant to describe the content of the column, that content description is lost when in replacing it with an action description</li> <li>it's not immediately (for me, the dumbest <em>user</em> on earth :-) clear that the header cell has the function of a toggle button. Accidentally clicking it will loose all earlier content state in that column</li> </ul> <p>So even if interaction analysis comes out with a clear we-do-need/want-it, </p> <ul> <li>action only in-addition to the content</li> <li>use a widget that's clearer (e.g. a tri-state checkbox all-de-/selected, mixed content). Also, de-/selecting must both be possible from mixed content. On second thought, a checkbox probably isn't the best choice either, didn't dig further</li> <li>minimize the possibility to accidentally (just for me :-) change bulk state, (e.g. by a clear visual separation of an active area - the checkbox icon) from the "normal header" region.</li> </ul> <p>Technical aspects</p> <ul> <li>TableHeader is not designed for "live" components. Whatever is wanted has to be controlled by ourselves</li> <li>examples are around (e.g. JIDE grid supports adding components)</li> <li>fiddling with header tends to look unattractive because it's not trivial to change the renderer and at the same time keep the LAF provided appearance</li> </ul>
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    1. POHow can I put a control in the JTableHeader of a JTable?
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    1. CO+1 and the check for putting the whole approach in context.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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