Name: sdC67446 Date: 02/10/99


The initial value of getRowHeight() is 0. The call of setRowHeight(0) throws
IllegalArgumentException - "FixedHeightLayoutCache only supports row
heights greater than 0". Also the call of getPathClosestTo(int x, int
y) causes ArithmeticException (dividing by zero).

The doc says:
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public void setRowHeight(int rowHeight)

       Sets the height of each cell. If rowHeight is less than or
       equal to 0 this will throw an IllegalArgumentException.
       Parameters:
              rowHeight - the height of each cell, in pixels
       Overrides:
              setRowHeight in class AbstractLayoutCache


// from AbstractLayoutCache class //
public int getRowHeight()

       Returns the height of each row. If the returned value is less
       than or equal to 0 the height for each row is determined by the
       renderer.
       Parameters:
              the - height of each cell, in pixels. Zero or negative
       if the height of each row is determined by the tree cell
       renderer


The test demonstrating the bug:
-----------------Test.java------------------------
import javax.swing.tree.*;

public class Test {
    public static void main(String[] args) {
FixedHeightLayoutCache fhlc = new FixedHeightLayoutCache();

try {
System.out.println("fhlc.getRowHeight() = "+ fhlc.getRowHeight());
fhlc.setRowHeight(10);
System.out.println("fhlc.getRowHeight() = "+ fhlc.getRowHeight());
fhlc.setRowHeight(0);
System.out.println("fhlc.getRowHeight() = "+ fhlc.getRowHeight());
} catch (Exception e) {
System.out.println(e);
}
    }
}
---------Output from the test---------------------
fhlc.getRowHeight() = 0
fhlc.getRowHeight() = 10
java.lang.IllegalArgumentException: FixedHeightLayoutCache only
supports row heights greater than 0
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