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);
}
/**
* Repaint the region of change covered by the given document event. Damages the line that begins
* the range to cover the case when the insert/remove is only on one line. If lines are added or
* removed, damages the whole view. The longest line is checked to see if it has changed.
*/
protected void updateDamage(DocumentEvent changes, Shape a, ViewFactory f) {
Component host = getContainer();
updateMetrics();
Element elem = getElement();
DocumentEvent.ElementChange ec = changes.getChange(elem);
Element[] added = (ec != null) ? ec.getChildrenAdded() : null;
Element[] removed = (ec != null) ? ec.getChildrenRemoved() : null;
if (((added != null) && (added.length > 0)) || ((removed != null) && (removed.length > 0))) {
// lines were added or removed...
if (added != null) {
int addedAt = ec.getIndex(); // FIXME: Is this correct?????
for (int i = 0; i < added.length; i++) possiblyUpdateLongLine(added[i], addedAt + i);
}
if (removed != null) {
for (int i = 0; i < removed.length; i++) {
if (removed[i] == longLine) {
longLineWidth = -1; // Must do this!!
calculateLongestLine();
break;
}
}
}
preferenceChanged(null, true, true);
host.repaint();
}
// This occurs when syntax highlighting only changes on lines
// (i.e. beginning a multiline comment).
else if (changes.getType() == DocumentEvent.EventType.CHANGE) {
// System.err.println("Updating the damage due to a CHANGE event...");
int startLine = changes.getOffset();
int endLine = changes.getLength();
damageLineRange(startLine, endLine, a, host);
} else {
Element map = getElement();
int line = map.getElementIndex(changes.getOffset());
damageLineRange(line, line, a, host);
if (changes.getType() == DocumentEvent.EventType.INSERT) {
// check to see if the line is longer than current
// longest line.
Element e = map.getElement(line);
if (e == longLine) {
// We must recalculate longest line's width here
// because it has gotten longer.
longLineWidth = getLineWidth(line);
preferenceChanged(null, true, false);
} else {
// If long line gets updated, update the status bars too.
if (possiblyUpdateLongLine(e, line)) preferenceChanged(null, true, false);
}
} else if (changes.getType() == DocumentEvent.EventType.REMOVE) {
if (map.getElement(line) == longLine) {
// removed from longest line... recalc
longLineWidth = -1; // Must do this!
calculateLongestLine();
preferenceChanged(null, true, false);
}
}
}
}
/** Returns the offset where the selection ends on the specified line. */
public int getSelectionEnd(int line) {
if (line == selectionEndLine) return selectionEnd;
else if (rectSelect) {
Element map = document.getDefaultRootElement();
int end = selectionEnd - map.getElement(selectionEndLine).getStartOffset();
Element lineElement = map.getElement(line);
int lineStart = lineElement.getStartOffset();
int lineEnd = lineElement.getEndOffset() - 1;
return Math.min(lineEnd, lineStart + end);
} else return getLineEndOffset(line) - 1;
}
/**
* Paints the word-wrapped text.
*
* @param g The graphics context in which to paint.
* @param a The shape (usually a rectangle) in which to paint.
*/
public void paint(Graphics g, Shape a) {
Rectangle alloc = (a instanceof Rectangle) ? (Rectangle) a : a.getBounds();
tabBase = alloc.x;
Graphics2D g2d = (Graphics2D) g;
host = (RSyntaxTextArea) getContainer();
int ascent = host.getMaxAscent();
int fontHeight = host.getLineHeight();
FoldManager fm = host.getFoldManager();
TokenPainter painter = host.getTokenPainter();
Element root = getElement();
// Whether token styles should always be painted, even in selections
int selStart = host.getSelectionStart();
int selEnd = host.getSelectionEnd();
boolean useSelectedTextColor = host.getUseSelectedTextColor();
int n = getViewCount(); // Number of lines.
int x = alloc.x + getLeftInset();
tempRect.y = alloc.y + getTopInset();
Rectangle clip = g.getClipBounds();
for (int i = 0; i < n; i++) {
tempRect.x = x + getOffset(X_AXIS, i);
// tempRect.y = y + getOffset(Y_AXIS, i);
tempRect.width = getSpan(X_AXIS, i);
tempRect.height = getSpan(Y_AXIS, i);
// System.err.println("For line " + i + ": tempRect==" + tempRect);
if (tempRect.intersects(clip)) {
Element lineElement = root.getElement(i);
int startOffset = lineElement.getStartOffset();
int endOffset = lineElement.getEndOffset() - 1; // Why always "-1"?
View view = getView(i);
if (!useSelectedTextColor
|| selStart == selEnd
|| (startOffset >= selEnd || endOffset < selStart)) {
drawView(painter, g2d, alloc, view, fontHeight, tempRect.y + ascent);
} else {
// System.out.println("Drawing line with selection: " + i);
drawViewWithSelection(
painter, g2d, alloc, view, fontHeight, tempRect.y + ascent, selStart, selEnd);
}
}
tempRect.y += tempRect.height;
Fold possibleFold = fm.getFoldForLine(i);
if (possibleFold != null && possibleFold.isCollapsed()) {
i += possibleFold.getCollapsedLineCount();
// Visible indicator of collapsed lines
Color c = RSyntaxUtilities.getFoldedLineBottomColor(host);
if (c != null) {
g.setColor(c);
g.drawLine(x, tempRect.y - 1, alloc.width, tempRect.y - 1);
}
}
}
}
/*
* Get the line number to be drawn. The empty string will be returned
* when a line of text has wrapped.
*/
protected String getTextLineNumber(int rowStartOffset) {
Element root = component.getDocument().getDefaultRootElement();
int index = root.getElementIndex(rowStartOffset);
Element line = root.getElement(index);
if (line.getStartOffset() == rowStartOffset) return String.valueOf(index + 1);
else return "";
}
/**
* Provides a mapping from the view coordinate space to the logical coordinate space of the model.
*
* @param fx the X coordinate >= 0
* @param fy the Y coordinate >= 0
* @param a the allocated region to render into
* @return the location within the model that best represents the given point in the view >= 0
*/
@Override
public int viewToModel(float fx, float fy, Shape a, Position.Bias[] bias) {
bias[0] = Position.Bias.Forward;
Rectangle alloc = a.getBounds();
RSyntaxDocument doc = (RSyntaxDocument) getDocument();
int x = (int) fx;
int y = (int) fy;
// If they're asking about a view position above the area covered by
// this view, then the position is assumed to be the starting position
// of this view.
if (y < alloc.y) {
return getStartOffset();
}
// If they're asking about a position below this view, the position
// is assumed to be the ending position of this view.
else if (y > alloc.y + alloc.height) {
return host.getLastVisibleOffset();
}
// They're asking about a position within the coverage of this view
// vertically. So, we figure out which line the point corresponds to.
// If the line is greater than the number of lines contained, then
// simply use the last line as it represents the last possible place
// we can position to.
else {
Element map = doc.getDefaultRootElement();
int lineIndex = Math.abs((y - alloc.y) / lineHeight); // metrics.getHeight() );
FoldManager fm = host.getFoldManager();
// System.out.print("--- " + lineIndex);
lineIndex += fm.getHiddenLineCountAbove(lineIndex, true);
// System.out.println(" => " + lineIndex);
if (lineIndex >= map.getElementCount()) {
return host.getLastVisibleOffset();
}
Element line = map.getElement(lineIndex);
// If the point is to the left of the line...
if (x < alloc.x) {
return line.getStartOffset();
} else if (x > alloc.x + alloc.width) {
return line.getEndOffset() - 1;
} else {
// Determine the offset into the text
int p0 = line.getStartOffset();
Token tokenList = doc.getTokenListForLine(lineIndex);
tabBase = alloc.x;
int offs = tokenList.getListOffset((RSyntaxTextArea) getContainer(), this, tabBase, x);
return offs != -1 ? offs : p0;
}
} // End of else.
}
/**
* Loads all of the children to initialize the view. This is called by the <code>setParent</code>
* method. Subclasses can re-implement this to initialize their child views in a different manner.
* The default implementation creates a child view for each child element.
*
* @param f the view factory
*/
protected void loadChildren(ViewFactory f) {
Element e = getElement();
int n = e.getElementCount();
if (n > 0) {
View[] added = new View[n];
for (int i = 0; i < n; i++) added[i] = new WrappedLine(e.getElement(i));
replace(0, 0, added);
}
}
/*
* 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;
}
/** Returns the selected text, or null if no selection is active. */
public final String getSelectedText() {
if (selectionStart == selectionEnd) return null;
if (rectSelect) {
// Return each row of the selection on a new line
Element map = document.getDefaultRootElement();
int start = selectionStart - map.getElement(selectionStartLine).getStartOffset();
int end = selectionEnd - map.getElement(selectionEndLine).getStartOffset();
// Certain rectangles satisfy this condition...
if (end < start) {
int tmp = end;
end = start;
start = tmp;
}
StringBuffer buf = new StringBuffer();
Segment seg = new Segment();
for (int i = selectionStartLine; i <= selectionEndLine; i++) {
Element lineElement = map.getElement(i);
int lineStart = lineElement.getStartOffset();
int lineEnd = lineElement.getEndOffset() - 1;
int lineLen = lineEnd - lineStart;
lineStart = Math.min(lineStart + start, lineEnd);
lineLen = Math.min(end - start, lineEnd - lineStart);
getText(lineStart, lineLen, seg);
buf.append(seg.array, seg.offset, seg.count);
if (i != selectionEndLine) buf.append('\n');
}
return buf.toString();
} else {
return getText(selectionStart, selectionEnd - selectionStart);
}
}
public void caretUpdate(CaretEvent e) {
// when the cursor moves on _textView
// this method will be called. Then, we
// must determine what the line number is
// and update the line number view
Element root = textView.getDocument().getDefaultRootElement();
int line = root.getElementIndex(e.getDot());
root = root.getElement(line);
int col = root.getElementIndex(e.getDot());
lineNumberView.setText(line + ":" + col);
// if text is selected then enable copy and cut
boolean isSelection = e.getDot() != e.getMark();
copyAction.setEnabled(isSelection);
cutAction.setEnabled(isSelection);
}
/**
* Iterate over the lines represented by the child elements of the element this view represents,
* looking for the line that is the longest. The <em>longLine</em> variable is updated to
* represent the longest line contained. The <em>font</em> variable is updated to indicate the
* font used to calculate the longest line.
*/
void calculateLongestLine() {
Component c = getContainer();
font = c.getFont();
metrics = c.getFontMetrics(font);
tabSize = getTabSize() * metrics.charWidth(' ');
Element lines = getElement();
int n = lines.getElementCount();
for (int i = 0; i < n; i++) {
Element line = lines.getElement(i);
float w = getLineWidth(i);
if (w > longLineWidth) {
longLineWidth = w;
longLine = line;
}
}
}
/**
* Loads all of the children to initialize the view. This is called by the {@link #setParent}
* method. Subclasses can reimplement this to initialize their child views in a different manner.
* The default implementation creates a child view for each child element.
*
* @param f the view factory
* @see #setParent
*/
protected void loadChildren(ViewFactory f) {
if (f == null) {
// No factory. This most likely indicates the parent view
// has changed out from under us, bail!
return;
}
Element e = getElement();
int n = e.getElementCount();
if (n > 0) {
View[] added = new View[n];
for (int i = 0; i < n; i++) {
added[i] = f.create(e.getElement(i));
}
replace(0, 0, added);
}
}
/**
* Returns a token list for the specified segment of text representing the specified line number.
* This method is basically a wrapper for <code>tokenMaker.getTokenList</code> that takes into
* account the last token on the previous line to assure token accuracy.
*
* @param line The line number of <code>text</code> in the document, >= 0.
* @return A token list representing the specified line.
*/
public final Token getTokenListForLine(int line) {
Element map = getDefaultRootElement();
Element elem = map.getElement(line);
int startOffset = elem.getStartOffset();
// int endOffset = (line==map.getElementCount()-1 ? elem.getEndOffset() - 1:
// elem.getEndOffset() - 1);
int endOffset = elem.getEndOffset() - 1; // Why always "-1"?
try {
getText(startOffset, endOffset - startOffset, s);
} catch (BadLocationException ble) {
ble.printStackTrace();
return null;
}
int initialTokenType = line == 0 ? Token.NULL : getLastTokenTypeOnLine(line - 1);
return tokenMaker.getTokenList(s, initialTokenType, startOffset);
}
private String addWhiteSpace(Document doc, int offset) throws BadLocationException {
StringBuilder whiteSpace = new StringBuilder("\n");
Element rootElement = doc.getDefaultRootElement();
int line = rootElement.getElementIndex(offset);
int i = rootElement.getElement(line).getStartOffset();
while (true) {
String temp = doc.getText(i, 1);
if (temp.equals(" ") || temp.equals("\t")) {
whiteSpace.append(temp);
i++;
} else break;
}
return whiteSpace.toString();
}
/**
* Makes our private <code>Segment s</code> point to the text in our document referenced by the
* specified element. Note that <code>line</code> MUST be a valid line number in the document.
*
* @param line The line number you want to get.
*/
private final void setSharedSegment(int line) {
Element map = getDefaultRootElement();
// int numLines = map.getElementCount();
Element element = map.getElement(line);
if (element == null) throw new InternalError("Invalid line number: " + line);
int startOffset = element.getStartOffset();
// int endOffset = (line==numLines-1 ?
// element.getEndOffset()-1 : element.getEndOffset() - 1);
int endOffset = element.getEndOffset() - 1; // Why always "-1"?
try {
getText(startOffset, endOffset - startOffset, s);
} catch (BadLocationException ble) {
throw new InternalError("Text range not in document: " + startOffset + "-" + endOffset);
}
}
/**
* Actually paints the text area. Only lines that have been damaged are repainted.
*
* @param g The graphics context with which to paint.
* @param a The allocated region in which to render.
*/
@Override
public void paint(Graphics g, Shape a) {
RSyntaxDocument document = (RSyntaxDocument) getDocument();
Rectangle alloc = a.getBounds();
tabBase = alloc.x;
host = (RSyntaxTextArea) getContainer();
Rectangle clip = g.getClipBounds();
// An attempt to speed things up for files with long lines. Note that
// this will actually slow things down a bit for the common case of
// regular-length lines, but it doesn't make a perceivable difference.
clipStart = clip.x;
clipEnd = clipStart + clip.width;
lineHeight = host.getLineHeight();
ascent = host.getMaxAscent(); // metrics.getAscent();
int heightAbove = clip.y - alloc.y;
int linesAbove = Math.max(0, heightAbove / lineHeight);
FoldManager fm = host.getFoldManager();
linesAbove += fm.getHiddenLineCountAbove(linesAbove, true);
Rectangle lineArea = lineToRect(a, linesAbove);
int y = lineArea.y + ascent;
int x = lineArea.x;
Element map = getElement();
int lineCount = map.getElementCount();
// Whether token styles should always be painted, even in selections
int selStart = host.getSelectionStart();
int selEnd = host.getSelectionEnd();
RSyntaxTextAreaHighlighter h = (RSyntaxTextAreaHighlighter) host.getHighlighter();
Graphics2D g2d = (Graphics2D) g;
Token token;
// System.err.println("Painting lines: " + linesAbove + " to " + (endLine-1));
TokenPainter painter = host.getTokenPainter();
int line = linesAbove;
// int count = 0;
while (y < clip.y + clip.height + ascent && line < lineCount) {
Fold fold = fm.getFoldForLine(line);
Element lineElement = map.getElement(line);
int startOffset = lineElement.getStartOffset();
// int endOffset = (line==lineCount ? lineElement.getEndOffset()-1 :
// lineElement.getEndOffset()-1);
int endOffset = lineElement.getEndOffset() - 1; // Why always "-1"?
h.paintLayeredHighlights(g2d, startOffset, endOffset, a, host, this);
// Paint a line of text.
token = document.getTokenListForLine(line);
if (selStart == selEnd || startOffset >= selEnd || endOffset < selStart) {
drawLine(painter, token, g2d, x, y, line);
} else {
// System.out.println("Drawing line with selection: " + line);
drawLineWithSelection(painter, token, g2d, x, y, selStart, selEnd);
}
if (fold != null && fold.isCollapsed()) {
// Visible indicator of collapsed lines
Color c = RSyntaxUtilities.getFoldedLineBottomColor(host);
if (c != null) {
g.setColor(c);
g.drawLine(x, y + lineHeight - ascent - 1, host.getWidth(), y + lineHeight - ascent - 1);
}
// Skip to next line to paint, taking extra care for lines with
// block ends and begins together, e.g. "} else {"
do {
int hiddenLineCount = fold.getLineCount();
if (hiddenLineCount == 0) {
// Fold parser identified a zero-line fold region.
// This is really a bug, but we'll be graceful here
// and avoid an infinite loop.
break;
}
line += hiddenLineCount;
fold = fm.getFoldForLine(line);
} while (fold != null && fold.isCollapsed());
}
y += lineHeight;
line++;
// count++;
}
// System.out.println("SyntaxView: lines painted=" + count);
}
/**
* Replaces the selection with the specified text.
*
* @param selectedText The replacement text for the selection
*/
public void setSelectedText(String selectedText) {
if (!editable) {
throw new InternalError("Text component" + " read only");
}
document.beginCompoundEdit();
try {
if (rectSelect) {
Element map = document.getDefaultRootElement();
int start = selectionStart - map.getElement(selectionStartLine).getStartOffset();
int end = selectionEnd - map.getElement(selectionEndLine).getStartOffset();
// Certain rectangles satisfy this condition...
if (end < start) {
int tmp = end;
end = start;
start = tmp;
}
int lastNewline = 0;
int currNewline = 0;
for (int i = selectionStartLine; i <= selectionEndLine; i++) {
Element lineElement = map.getElement(i);
int lineStart = lineElement.getStartOffset();
int lineEnd = lineElement.getEndOffset() - 1;
int rectStart = Math.min(lineEnd, lineStart + start);
document.remove(rectStart, Math.min(lineEnd - rectStart, end - start));
if (selectedText == null) continue;
currNewline = selectedText.indexOf('\n', lastNewline);
if (currNewline == -1) currNewline = selectedText.length();
document.insertString(rectStart, selectedText.substring(lastNewline, currNewline), null);
lastNewline = Math.min(selectedText.length(), currNewline + 1);
}
if (selectedText != null && currNewline != selectedText.length()) {
int offset = map.getElement(selectionEndLine).getEndOffset() - 1;
document.insertString(offset, "\n", null);
document.insertString(offset + 1, selectedText.substring(currNewline + 1), null);
}
} else {
document.remove(selectionStart, selectionEnd - selectionStart);
if (selectedText != null) {
document.insertString(selectionStart, selectedText, null);
}
}
} catch (BadLocationException bl) {
bl.printStackTrace();
throw new InternalError("Cannot replace" + " selection");
}
// No matter what happends... stops us from leaving document
// in a bad state
finally {
document.endCompoundEdit();
}
setCaretPosition(selectionEnd);
}