getVisibleTableSize();
The getVisibleTableSize method returns the number of visible columns and rows in the table, and also their total height and width.
This method returns a JSON object with the following fields: row -number of visible rows in the table , column - number of visible columns, rowHeight - total height of all visible rows, colWidth - total width of all visible columns.
The example of use is given on the page with description of the TabSheetMeasures.getVisibleColIndexes method.
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