private void computePreferredSize() {
Model model = getModel();
Selection sel = model.getSelection();
int columns = sel.size();
if (columns == 0) {
setPreferredSize(new Dimension(0, 0));
return;
}
Graphics g = getGraphics();
if (g == null) {
cellHeight = 16;
cellWidth = 24;
} else {
FontMetrics fm = g.getFontMetrics(HEAD_FONT);
cellHeight = fm.getHeight();
cellWidth = 24;
for (int i = 0; i < columns; i++) {
String header = sel.get(i).toShortString();
cellWidth = Math.max(cellWidth, fm.stringWidth(header));
}
}
tableWidth = (cellWidth + COLUMN_SEP) * columns - COLUMN_SEP;
tableHeight = cellHeight * (1 + rowCount) + HEADER_SEP;
setPreferredSize(new Dimension(tableWidth, tableHeight));
revalidate();
repaint();
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
Dimension sz = getSize();
int top = Math.max(0, (sz.height - tableHeight) / 2);
int left = Math.max(0, (sz.width - tableWidth) / 2);
Model model = getModel();
if (model == null) return;
Selection sel = model.getSelection();
int columns = sel.size();
if (columns == 0) {
g.setFont(BODY_FONT);
GraphicsUtil.drawCenteredText(
g, Strings.get("tableEmptyMessage"), sz.width / 2, sz.height / 2);
return;
}
g.setColor(Color.GRAY);
int lineY = top + cellHeight + HEADER_SEP / 2;
g.drawLine(left, lineY, left + tableWidth, lineY);
g.setColor(Color.BLACK);
g.setFont(HEAD_FONT);
FontMetrics headerMetric = g.getFontMetrics();
int x = left;
int y = top + headerMetric.getAscent() + 1;
for (int i = 0; i < columns; i++) {
x = paintHeader(sel.get(i).toShortString(), x, y, g, headerMetric);
}
g.setFont(BODY_FONT);
FontMetrics bodyMetric = g.getFontMetrics();
Rectangle clip = g.getClipBounds();
int firstRow = Math.max(0, (clip.y - y) / cellHeight - 1);
int lastRow = Math.min(rowCount, 2 + (clip.y + clip.height - y) / cellHeight);
int y0 = top + cellHeight + HEADER_SEP;
x = left;
for (int col = 0; col < columns; col++) {
SelectionItem item = sel.get(col);
ValueLog log = model.getValueLog(item);
int radix = item.getRadix();
int offs = rowCount - log.size();
y = y0 + Math.max(offs, firstRow) * cellHeight;
for (int row = Math.max(offs, firstRow); row < lastRow; row++) {
Value val = log.get(row - offs);
String label = val.toDisplayString(radix);
int width = bodyMetric.stringWidth(label);
g.drawString(label, x + (cellWidth - width) / 2, y + bodyMetric.getAscent());
y += cellHeight;
}
x += cellWidth + COLUMN_SEP;
}
}
private void computeRowCount() {
Model model = getModel();
Selection sel = model.getSelection();
int rows = 0;
for (int i = sel.size() - 1; i >= 0; i--) {
int x = model.getValueLog(sel.get(i)).size();
if (x > rows) rows = x;
}
if (rowCount != rows) {
rowCount = rows;
computePreferredSize();
}
}