/**
* Returns whether the MLC token containing <code>offs</code> appears to have a "nested" comment
* (i.e., contains "<code>/*</code>" somewhere inside of it). This implies that it is likely a
* "new" MLC and needs to be closed. While not foolproof, this is usually good enough of a sign.
*
* @param textArea
* @param line
* @param offs
* @return Whether a comment appears to be nested inside this one.
*/
private boolean appearsNested(RSyntaxTextArea textArea, int line, int offs) {
final int firstLine = line; // Remember the line we start at.
while (line < textArea.getLineCount()) {
Token t = textArea.getTokenListForLine(line);
int i = 0;
// If examining the first line, start at offs.
if (line++ == firstLine) {
t = RSyntaxUtilities.getTokenAtOffset(t, offs);
if (t == null) { // offs was at end of the line
continue;
}
i = t.documentToToken(offs);
} else {
i = t.getTextOffset();
}
int textOffset = t.getTextOffset();
while (i < textOffset + t.length() - 1) {
if (t.charAt(i - textOffset) == '/' && t.charAt(i - textOffset + 1) == '*') {
return true;
}
i++;
}
// If tokens come after this one on this line, our MLC ended.
if (t.getNextToken() != null) {
return false;
}
}
return true; // No match - MLC goes to the end of the file
}
/**
* Determines the preferred span for this view along an axis. This is implemented to provide the
* superclass behavior after first making sure that the current font metrics are cached (for the
* nested lines which use the metrics to determine the height of the potentially wrapped lines).
*
* @param axis may be either View.X_AXIS or View.Y_AXIS
* @return the span the view would like to be rendered into. Typically the view is told to render
* into the span that is returned, although there is no guarantee. The parent may choose to
* resize or break the view.
* @see View#getPreferredSpan
*/
public float getPreferredSpan(int axis) {
updateMetrics();
float span = 0;
if (axis == View.X_AXIS) { // Add EOL marker
span = super.getPreferredSpan(axis);
span += metrics.charWidth('\u00b6'); // metrics set in updateMetrics
} else {
span = super.getPreferredSpan(axis);
host = (RSyntaxTextArea) getContainer();
if (host.isCodeFoldingEnabled()) {
// TODO: Cache y-offsets again to speed this up
// System.out.println("y-axis baby");
int lineCount = host.getLineCount();
FoldManager fm = host.getFoldManager();
for (int i = 0; i < lineCount; i++) {
if (fm.isLineHidden(i)) {
span -= getSpan(View.Y_AXIS, i);
}
}
}
}
return span;
}
