private void updateTemplateFromEditor(PrintfTemplate template) {
ArrayList params = new ArrayList();
String format = null;
int text_length = editorPane.getDocument().getLength();
try {
format = editorPane.getDocument().getText(0, text_length);
} catch (BadLocationException ex1) {
}
Element section_el = editorPane.getDocument().getDefaultRootElement();
// Get number of paragraphs.
int num_para = section_el.getElementCount();
for (int p_count = 0; p_count < num_para; p_count++) {
Element para_el = section_el.getElement(p_count);
// Enumerate the content elements
int num_cont = para_el.getElementCount();
for (int c_count = 0; c_count < num_cont; c_count++) {
Element content_el = para_el.getElement(c_count);
AttributeSet attr = content_el.getAttributes();
// Get the name of the style applied to this content element; may be null
String sn = (String) attr.getAttribute(StyleConstants.NameAttribute);
// Check if style name match
if (sn != null && sn.startsWith("Parameter")) {
// we extract the label.
JLabel l = (JLabel) StyleConstants.getComponent(attr);
if (l != null) {
params.add(l.getName());
}
}
}
}
template.setFormat(format);
template.setTokens(params);
}
/*
* Determine the Y offset for the current row
*/
private int getOffsetY(int rowStartOffset, FontMetrics fontMetrics) throws BadLocationException {
// Get the bounding rectangle of the row
Rectangle r = component.modelToView(rowStartOffset);
int lineHeight = fontMetrics.getHeight();
int y = r.y + r.height;
int descent = 0;
// The text needs to be positioned above the bottom of the bounding
// rectangle based on the descent of the font(s) contained on the row.
if (r.height == lineHeight) {
// default font is being used
descent = fontMetrics.getDescent();
} else {
// We need to check all the attributes for font changes
if (fonts == null) {
fonts = new HashMap<String, FontMetrics>();
}
Element root = component.getDocument().getDefaultRootElement();
int index = root.getElementIndex(rowStartOffset);
Element line = root.getElement(index);
for (int i = 0; i < line.getElementCount(); i++) {
Element child = line.getElement(i);
AttributeSet as = child.getAttributes();
String fontFamily = (String) as.getAttribute(StyleConstants.FontFamily);
Integer fontSize = (Integer) as.getAttribute(StyleConstants.FontSize);
String key = fontFamily + fontSize;
FontMetrics fm = fonts.get(key);
if (fm == null) {
Font font = new Font(fontFamily, Font.PLAIN, fontSize);
fm = component.getFontMetrics(font);
fonts.put(key, fm);
}
descent = Math.max(descent, fm.getDescent());
}
}
return y - descent;
}
/** Calculate the width needed to display the maximum line number */
private void setPreferredWidth() {
Element root = component.getDocument().getDefaultRootElement();
int lines = root.getElementCount();
int digits = Math.max(String.valueOf(lines).length(), minimumDisplayDigits);
// Update sizes when number of digits in the line number changes
if (lastDigits != digits) {
lastDigits = digits;
FontMetrics fontMetrics = getFontMetrics(getFont());
int width = fontMetrics.charWidth('0') * digits;
Insets insets = getInsets();
int preferredWidth = insets.left + insets.right + width;
Dimension d = getPreferredSize();
d.setSize(preferredWidth, HEIGHT);
setPreferredSize(d);
setSize(d);
}
}