/**
* Returns the bounding box (in the current view) of a specified position in the model. This
* method is designed for line-wrapped views to use, as it allows you to specify a "starting
* position" in the line, from which the x-value is assumed to be zero. The idea is that you
* specify the first character in a physical line as <code>p0</code>, as this is the character
* where the x-pixel value is 0.
*
* @param textArea The text area containing the text.
* @param s A segment in which to load the line. This is passed in so we don't have to reallocate
* a new <code>Segment</code> for each call.
* @param p0 The starting position in the physical line in the document.
* @param p1 The position for which to get the bounding box in the view.
* @param e How to expand tabs.
* @param rect The rectangle whose x- and width-values are changed to represent the bounding box
* of <code>p1</code>. This is reused to keep from needlessly reallocating Rectangles.
* @param x0 The x-coordinate (pixel) marking the left-hand border of the text. This is useful if
* the text area has a border, for example.
* @return The bounding box in the view of the character <code>p1</code>.
* @throws BadLocationException If <code>p0</code> or <code>p1</code> is not a valid location in
* the specified text area's document.
* @throws IllegalArgumentException If <code>p0</code> and <code>p1</code> are not on the same
* line.
*/
public static Rectangle getLineWidthUpTo(
RSyntaxTextArea textArea, Segment s, int p0, int p1, TabExpander e, Rectangle rect, int x0)
throws BadLocationException {
RSyntaxDocument doc = (RSyntaxDocument) textArea.getDocument();
// Ensure p0 and p1 are valid document positions.
if (p0 < 0) throw new BadLocationException("Invalid document position", p0);
else if (p1 > doc.getLength()) throw new BadLocationException("Invalid document position", p1);
// Ensure p0 and p1 are in the same line, and get the start/end
// offsets for that line.
Element map = doc.getDefaultRootElement();
int lineNum = map.getElementIndex(p0);
// We do ">1" because p1 might be the first position on the next line
// or the last position on the previous one.
// if (lineNum!=map.getElementIndex(p1))
if (Math.abs(lineNum - map.getElementIndex(p1)) > 1)
throw new IllegalArgumentException(
"p0 and p1 are not on the " + "same line (" + p0 + ", " + p1 + ").");
// Get the token list.
Token t = doc.getTokenListForLine(lineNum);
// Modify the token list 't' to begin at p0 (but still have correct
// token types, etc.), and get the x-location (in pixels) of the
// beginning of this new token list.
makeTokenListStartAt(t, p0, e, textArea, 0);
rect = t.listOffsetToView(textArea, e, p1, x0, rect);
return rect;
}
/** {@inheritDoc} */
public ParseResult parse(RSyntaxDocument doc, String style) {
result.clearNotices();
Element root = doc.getDefaultRootElement();
result.setParsedLines(0, root.getElementCount() - 1);
if (spf == null || doc.getLength() == 0) {
return result;
}
try {
SAXParser sp = spf.newSAXParser();
Handler handler = new Handler(doc);
DocumentReader r = new DocumentReader(doc);
InputSource input = new InputSource(r);
sp.parse(input, handler);
r.close();
} catch (SAXParseException spe) {
// A fatal parse error - ignore; a ParserNotice was already created.
} catch (Exception e) {
// e.printStackTrace(); // Will print if DTD specified and can't be found
result.addNotice(
new DefaultParserNotice(this, "Error parsing XML: " + e.getMessage(), 0, -1, -1));
}
return result;
}
