public String getValueAt(final Point point) {
final int line = ((point.y - m_paddingTop) + m_rowHeight) / m_rowHeight;
final long elementSize = getElementSize();
final long startAddress = m_model.getStartAddress() + (m_firstRow * elementSize);
final long elementAddress = startAddress + (line * elementSize);
return m_model.hasData(elementAddress, elementSize) ? m_model.getElement(elementAddress) : null;
}
/**
* Draws the stack values onto the screen.
*
* @param g The graphics context to paint on.
*/
private void drawElements(final Graphics g) {
if (isEnabled()) {
// Choose the right color for the offset text
g.setColor(m_fontColorValues);
} else {
g.setColor(m_disabledColor != m_bgColorOffset ? m_disabledColor : Color.WHITE);
}
final int x = (10 + m_offsetViewWidth) - (m_charWidth * m_firstColumn);
int linesToDraw = getNumberOfVisibleRows();
if ((m_firstRow + linesToDraw) >= m_model.getNumberOfEntries()) {
linesToDraw = m_model.getNumberOfEntries() - m_firstRow; // TODO: This can make linesToDraw
// negative
if (linesToDraw < 0) {
// FIXME: This is a workaround for case 2337. The issue is real
// but reproducing it can take hours. For this reason I am now
// implementing this workaround, but in the future the underlying
// cause of this behavior should be determined and fixed.
return;
}
}
if (m_model.getStartAddress() == -1) {
return;
}
final long elementSize = getElementSize();
if (m_status == DefinitionStatus.DEFINED) {
final long startAddress = m_model.getStartAddress() + (m_firstRow * elementSize);
final long numberOfBytes = linesToDraw * elementSize;
if (!m_model.hasData(startAddress, numberOfBytes)) {
setDefinitionStatus(DefinitionStatus.UNDEFINED);
setEnabled(false);
if (m_updateTimer != null) {
m_updateTimer.setRepeats(false);
m_updateTimer.stop();
}
m_updateTimer = new Timer(1000, new WaitingForDataAction(startAddress, numberOfBytes));
m_updateTimer.setRepeats(true);
m_updateTimer.start();
return;
}
// Iterate over the data and print the offsets
for (int i = 0; i < linesToDraw; i++) {
final long elementAddress = startAddress + (i * elementSize);
g.drawString(m_model.getElement(elementAddress), x, m_paddingTop + (i * m_rowHeight));
}
} else {
// Iterate over the data and print the offsets
for (int i = 0; i < linesToDraw; i++) {
g.drawString(
Strings.repeat("?", 2 * getElementSize()), x, m_paddingTop + (i * m_rowHeight));
}
}
}