Servis-Rhino 4211B Betriebsanweisung PDF herunterladen (Seite 275)

Now, let us concentrate on just one column:

Again, so far so good. Now let us remind ourselves that a table is a window onto the data and that

it is very common for a table to show only a subset of that data. What we have is a window into

that data.

If we think of just one column, we see that at any given time, the table shows a set of cells where

each cell corresponds to a column cell in the data. As the user slides the slider, some cells come

into view while others now fall outside the window.

The TableCell object represents a visible cell in a column. As a new entry in the table becomes

visible, the updateItem() method of the TableCell is called which contains the value to be

shown in that cell in the table. When called, the TableCell updates itself to reflect the new data

to be shown.

Editing a table cell

So far we have spoken exclusively about using a table to show the data to the end user without

considering the notion that the user may wish to edit the data. The TableView provides the

capability to edit the data as well as view it. To get started, one of the first things we have to do is

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Servis-Rhino 4211B Betriebsanweisung Seite 275