/*
* We need to know if the caret is currently positioned on the line we
* are about to paint so the line number can be highlighted.
*/
private boolean isCurrentLine(int rowStartOffset) {
int caretPosition = component.getCaretPosition();
Element root = component.getDocument().getDefaultRootElement();
if (root.getElementIndex(rowStartOffset) == root.getElementIndex(caretPosition)) return true;
else return false;
}
private static int getNSVisualPosition(EditorPane txt, int pos, int direction) {
Element root = txt.getDocument().getDefaultRootElement();
int numLines = root.getElementIndex(txt.getDocument().getLength() - 1) + 1;
int line = root.getElementIndex(pos) + 1;
int tarLine = direction == SwingConstants.NORTH ? line - 1 : line + 1;
try {
if (tarLine <= 0) {
return 0;
}
if (tarLine > numLines) {
return txt.getDocument().getLength();
}
Rectangle curRect = txt.modelToView(pos);
Rectangle tarEndRect;
if (tarLine < numLines) {
tarEndRect = txt.modelToView(txt.getLineStartOffset(tarLine) - 1);
} else {
tarEndRect = txt.modelToView(txt.getDocument().getLength() - 1);
}
Debug.log(9, "curRect: " + curRect + ", tarEnd: " + tarEndRect);
if (curRect.x > tarEndRect.x) {
pos = txt.viewToModel(new Point(tarEndRect.x, tarEndRect.y));
} else {
pos = txt.viewToModel(new Point(curRect.x, tarEndRect.y));
}
} catch (BadLocationException e) {
Debug.error(me + "Problem getting next visual position\n%s", e.getMessage());
}
return pos;
}
public Element getLineAtCaret(int caretPosition) {
Element root = getDocument().getDefaultRootElement();
if (caretPosition == -1) {
return root.getElement(root.getElementIndex(getCaretPosition()));
} else {
return root.getElement(root.getElementIndex(root.getElementIndex(caretPosition)));
}
}
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);
}
/**
* 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);
}
}
}
}
/**
* Adds the matching block end.
*
* @param offset the offset
* @return the string after adding the matching block end
* @throws BadLocationException if the offset is invalid
*/
protected String addMatchingBlockEnd(int offset) throws BadLocationException {
StringBuffer result;
StringBuffer whiteSpace = new StringBuffer();
int line = m_RootElement.getElementIndex(offset);
int i = m_RootElement.getElement(line).getStartOffset();
while (true) {
String temp = m_Self.getText(i, 1);
if (temp.equals(" ") || temp.equals("\t")) {
whiteSpace.append(temp);
i++;
} else {
break;
}
}
// assemble string
result = new StringBuffer();
result.append(m_BlockStart);
result.append("\n");
result.append(whiteSpace.toString());
if (m_UseBlanks) result.append(m_Indentation);
else result.append("\t");
result.append("\n");
result.append(whiteSpace.toString());
result.append(m_BlockEnd);
return result.toString();
}
/**
* Returns the line.
*
* @param content the content
* @param offset the offset to start at
* @return the line
*/
protected String getLine(String content, int offset) {
int line = m_RootElement.getElementIndex(offset);
Element lineElement = m_RootElement.getElement(line);
int start = lineElement.getStartOffset();
int end = lineElement.getEndOffset();
return content.substring(start, end - 1);
}
/**
* Highlight lines to start or end delimiter.
*
* @param content the content to parse
* @param line the line number
* @throws BadLocationException if offsets are wrong
*/
protected void highlightLinesAfter(String content, int line) throws BadLocationException {
int offset = m_RootElement.getElement(line).getEndOffset();
// Start/End delimiter not found, nothing to do
int startDelimiter = -1;
int endDelimiter = -1;
if (getMultiLineComment()) {
startDelimiter = indexOf(content, getMultiLineCommentStart(), offset);
endDelimiter = indexOf(content, getMultiLineCommentEnd(), offset);
}
if (startDelimiter < 0) startDelimiter = content.length();
if (endDelimiter < 0) endDelimiter = content.length();
int delimiter = Math.min(startDelimiter, endDelimiter);
if (delimiter < offset) return;
// Start/End delimiter found, reapply highlighting
int endLine = m_RootElement.getElementIndex(delimiter);
for (int i = line + 1; i < endLine; i++) {
Element branch = m_RootElement.getElement(i);
Element leaf = m_Self.getCharacterElement(branch.getStartOffset());
AttributeSet as = leaf.getAttributes();
if (as.isEqual(DEFAULT_COMMENT)) applyHighlighting(content, i);
}
}
/*
* 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 document model coordinate space to the coordinate space of the
* view mapped to it.
*
* @param pos the position to convert
* @param a the allocated region to render into
* @return the bounding box of the given position is returned
* @exception BadLocationException if the given position does not represent a valid location in
* the associated document.
*/
@Override
public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException {
// System.err.println("--- begin modelToView ---");
Rectangle alloc = a.getBounds();
RSyntaxTextArea textArea = (RSyntaxTextArea) getContainer();
alloc.height = textArea.getLineHeight(); // metrics.getHeight();
alloc.width = 1;
int p0 = getStartOffset();
int p1 = getEndOffset();
int testP = (b == Position.Bias.Forward) ? pos : Math.max(p0, pos - 1);
// Get the token list for this line so we don't have to keep
// recomputing it if this logical line spans multiple physical
// lines.
RSyntaxDocument doc = (RSyntaxDocument) getDocument();
Element map = doc.getDefaultRootElement();
int line = map.getElementIndex(p0);
Token tokenList = doc.getTokenListForLine(line);
float x0 = alloc.x; // 0;
while (p0 < p1) {
TokenSubList subList =
TokenUtils.getSubTokenList(
tokenList, p0, WrappedSyntaxView.this, textArea, x0, lineCountTempToken);
x0 = subList != null ? subList.x : x0;
tokenList = subList != null ? subList.tokenList : null;
int p = calculateBreakPosition(p0, tokenList, x0);
if ((pos >= p0) && (testP < p)) { // pos < p)) {
// it's in this line
alloc =
RSyntaxUtilities.getLineWidthUpTo(
textArea, s, p0, pos, WrappedSyntaxView.this, alloc, alloc.x);
// System.err.println("--- end modelToView ---");
return alloc;
}
// if (p == p1 && pos == p1) {
if (p == p1 - 1 && pos == p1 - 1) {
// Wants end.
if (pos > p0) {
alloc =
RSyntaxUtilities.getLineWidthUpTo(
textArea, s, p0, pos, WrappedSyntaxView.this, alloc, alloc.x);
}
// System.err.println("--- end modelToView ---");
return alloc;
}
p0 = (p == p0) ? p1 : p;
// System.err.println("... ... Incrementing y");
alloc.y += alloc.height;
}
throw new BadLocationException(null, pos);
}
public Element getLineAtPoint(MouseEvent me) {
Point p = me.getLocationOnScreen();
Point pp = getLocationOnScreen();
p.translate(-pp.x, -pp.y);
int pos = viewToModel(p);
Element root = getDocument().getDefaultRootElement();
int e = root.getElementIndex(pos);
if (e == -1) {
return null;
}
return root.getElement(e);
}
public void actionPerformed(JTextComponent text) {
indentationLogic = ((EditorPane) text).getIndentationLogic();
StyledDocument doc = (StyledDocument) text.getDocument();
Element map = doc.getDefaultRootElement();
Caret c = text.getCaret();
int dot = c.getDot();
int mark = c.getMark();
int line1 = map.getElementIndex(dot);
if (dot != mark) {
int line2 = map.getElementIndex(mark);
int begin = Math.min(line1, line2);
int end = Math.max(line1, line2);
Element elem;
try {
for (line1 = begin; line1 < end; line1++) {
elem = map.getElement(line1);
handleDecreaseIndent(line1, elem, doc);
}
elem = map.getElement(end);
int start = elem.getStartOffset();
if (Math.max(c.getDot(), c.getMark()) != start) {
handleDecreaseIndent(end, elem, doc);
}
} catch (BadLocationException ble) {
Debug.error(me + "Problem while de-indenting line\n%s", ble.getMessage());
UIManager.getLookAndFeel().provideErrorFeedback(text);
}
} else {
Element elem = map.getElement(line1);
try {
handleDecreaseIndent(line1, elem, doc);
} catch (BadLocationException ble) {
Debug.error(me + "Problem while de-indenting line\n%s", ble.getMessage());
UIManager.getLookAndFeel().provideErrorFeedback(text);
}
}
}
//
// Implement CaretListener interface
//
@Override
public void caretUpdate(CaretEvent e) {
// Get the line the caret is positioned on
int caretPosition = component.getCaretPosition();
Element root = component.getDocument().getDefaultRootElement();
int currentLine = root.getElementIndex(caretPosition);
// Need to repaint so the correct line number can be highlighted
if (lastLine != currentLine) {
repaint();
lastLine = currentLine;
}
}
/**
* Determine how many lines have been changed, then apply highlighting to each line.
*
* @param offset the offset of the changed lines
* @param length the length of the change
* @throws BadLocationException if offset is invalid
*/
public void processChangedLines(int offset, int length) throws BadLocationException {
String content = m_Self.getText(0, m_Self.getLength());
// The lines affected by the latest document update
int startLine = m_RootElement.getElementIndex(offset);
int endLine = m_RootElement.getElementIndex(offset + length);
// Make sure all comment lines prior to the start line are commented
// and determine if the start line is still in a multi line comment
if (getMultiLineComment()) setInsideMultiLineComment(commentLinesBefore(content, startLine));
// Do the actual highlighting
for (int i = startLine; i <= endLine; i++) {
applyHighlighting(content, i);
}
// Resolve highlighting to the next end multi line delimiter
if (isMultiLineComment()) commentLinesAfter(content, endLine);
else highlightLinesAfter(content, endLine);
}
public void actionPerformed(JTextComponent text) {
indentationLogic = ((EditorPane) text).getIndentationLogic();
boolean indentError = false;
Document doc = text.getDocument();
Element map = doc.getDefaultRootElement();
String tabWhitespace = PreferencesUser.getInstance().getTabWhitespace();
Caret c = text.getCaret();
int dot = c.getDot();
int mark = c.getMark();
int dotLine = map.getElementIndex(dot);
int markLine = map.getElementIndex(mark);
if (dotLine != markLine) {
int first = Math.min(dotLine, markLine);
int last = Math.max(dotLine, markLine);
Element elem;
int start;
try {
for (int i = first; i < last; i++) {
elem = map.getElement(i);
start = elem.getStartOffset();
doc.insertString(start, tabWhitespace, null);
}
elem = map.getElement(last);
start = elem.getStartOffset();
if (Math.max(c.getDot(), c.getMark()) != start) {
doc.insertString(start, tabWhitespace, null);
}
} catch (BadLocationException ble) {
Debug.error(me + "Problem while indenting line\n%s", ble.getMessage());
UIManager.getLookAndFeel().provideErrorFeedback(text);
}
} else {
text.replaceSelection(tabWhitespace);
}
}
/** Calculate the number of lines that will be rendered by logical line when it is wrapped. */
final int calculateLineCount() {
int nlines = 0;
int startOffset = getStartOffset();
int p1 = getEndOffset();
// Get the token list for this line so we don't have to keep
// recomputing it if this logical line spans multiple physical
// lines.
RSyntaxTextArea textArea = (RSyntaxTextArea) getContainer();
RSyntaxDocument doc = (RSyntaxDocument) getDocument();
Element map = doc.getDefaultRootElement();
int line = map.getElementIndex(startOffset);
Token tokenList = doc.getTokenListForLine(line);
float x0 = 0; // FIXME: should be alloc.x!! alloc.x;//0;
// System.err.println(">>> calculateLineCount: " + startOffset + "-" + p1);
for (int p0 = startOffset; p0 < p1; ) {
// System.err.println("... ... " + p0 + ", " + p1);
nlines += 1;
TokenSubList subList =
TokenUtils.getSubTokenList(
tokenList, p0, WrappedSyntaxView.this, textArea, x0, lineCountTempToken);
x0 = subList != null ? subList.x : x0;
tokenList = subList != null ? subList.tokenList : null;
int p = calculateBreakPosition(p0, tokenList, x0);
// System.err.println("... ... ... break position p==" + p);
p0 = (p == p0) ? ++p : p; // this is the fix of #4410243
// we check on situation when
// width is too small and
// break position is calculated
// incorrectly.
// System.err.println("... ... ... new p0==" + p0);
}
/*
int numLines = 0;
try {
numLines = textArea.getLineCount();
} catch (BadLocationException ble) {
ble.printStackTrace();
}
System.err.println(">>> >>> calculated number of lines for this view (line " + line + "/" + numLines + ": " + nlines);
*/
return nlines;
}
private void checkCompletion(java.awt.event.KeyEvent ke) throws BadLocationException {
Document doc = getDocument();
Element root = doc.getDefaultRootElement();
int pos = getCaretPosition();
int lineIdx = root.getElementIndex(pos);
Element line = root.getElement(lineIdx);
int start = line.getStartOffset(), len = line.getEndOffset() - start;
String strLine = doc.getText(start, len - 1);
Debug.log(9, "[" + strLine + "]");
if (strLine.endsWith("find") && ke.getKeyChar() == '(') {
ke.consume();
doc.insertString(pos, "(", null);
ButtonCapture btnCapture = new ButtonCapture(this, line);
insertComponent(btnCapture);
doc.insertString(pos + 2, ")", null);
}
}
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();
}
/*
* 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 a token list for the <i>physical</i> line above the physical line containing the
* specified offset into the document. Note that for this plain (non-wrapped) view, this is simply
* the token list for the logical line above the line containing <code>offset</code>, since lines
* are not wrapped.
*
* @param offset The offset in question.
* @return A token list for the physical (and in this view, logical) line before this one. If
* <code>offset</code> is in the first line in the document, <code>null</code> is returned.
*/
public Token getTokenListForPhysicalLineAbove(int offset) {
RSyntaxDocument document = (RSyntaxDocument) getDocument();
Element map = document.getDefaultRootElement();
int line = map.getElementIndex(offset);
FoldManager fm = host.getFoldManager();
if (fm == null) {
line--;
if (line >= 0) {
return document.getTokenListForLine(line);
}
} else {
line = fm.getVisibleLineAbove(line);
if (line >= 0) {
return document.getTokenListForLine(line);
}
}
// int line = map.getElementIndex(offset) - 1;
// if (line>=0)
// return document.getTokenListForLine(line);
return null;
}
/**
* Provides a mapping from the document model coordinate space to the coordinate space of the view
* mapped to it.
*
* @param pos the position to convert >= 0
* @param a the allocated region to render into
* @return the bounding box of the given position
* @exception BadLocationException if the given position does not represent a valid location in
* the associated document
* @see View#modelToView
*/
@Override
public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException {
// line coordinates
Element map = getElement();
RSyntaxDocument doc = (RSyntaxDocument) getDocument();
int lineIndex = map.getElementIndex(pos);
Token tokenList = doc.getTokenListForLine(lineIndex);
Rectangle lineArea = lineToRect(a, lineIndex);
tabBase = lineArea.x; // Used by listOffsetToView().
// int x = (int)RSyntaxUtilities.getTokenListWidthUpTo(tokenList,
// (RSyntaxTextArea)getContainer(),
// this, 0, pos);
// We use this method instead as it returns the actual bounding box,
// not just the x-coordinate.
lineArea =
tokenList.listOffsetToView((RSyntaxTextArea) getContainer(), this, pos, tabBase, lineArea);
return lineArea;
}
/**
* Returns a token list for the <i>physical</i> line below the physical line containing the
* specified offset into the document. Note that for this plain (non-wrapped) view, this is simply
* the token list for the logical line below the line containing <code>offset</code>, since lines
* are not wrapped.
*
* @param offset The offset in question.
* @return A token list for the physical (and in this view, logical) line after this one. If
* <code>offset</code> is in the last physical line in the document, <code>null</code> is
* returned.
*/
public Token getTokenListForPhysicalLineBelow(int offset) {
RSyntaxDocument document = (RSyntaxDocument) getDocument();
Element map = document.getDefaultRootElement();
int lineCount = map.getElementCount();
int line = map.getElementIndex(offset);
if (!host.isCodeFoldingEnabled()) {
if (line < lineCount - 1) {
return document.getTokenListForLine(line + 1);
}
} else {
FoldManager fm = host.getFoldManager();
line = fm.getVisibleLineBelow(line);
if (line >= 0 && line < lineCount) {
return document.getTokenListForLine(line);
}
}
// int line = map.getElementIndex(offset);
// int lineCount = map.getElementCount();
// if (line<lineCount-1)
// return document.getTokenListForLine(line+1);
return null;
}
/**
* Fetches the child view index representing the given position in the model. This is implemented
* to fetch the view in the case where there is a child view for each child element.
*
* @param pos the position >= 0
* @return index of the view representing the given position, or -1 if no view represents that
* position
*/
protected int getViewIndexAtPosition(int pos) {
Element elem = getElement();
return elem.getElementIndex(pos);
}
/**
* Draws a single view (i.e., a line of text for a wrapped view), wrapping the text onto multiple
* lines if necessary. Any selected text is rendered with the editor's "selected text" color.
*
* @param painter The painter to use to render tokens.
* @param g The graphics context in which to paint.
* @param r The rectangle in which to paint.
* @param view The <code>View</code> to paint.
* @param fontHeight The height of the font being used.
* @param y The y-coordinate at which to begin painting.
* @param selStart The start of the selection.
* @param selEnd The end of the selection.
*/
protected void drawViewWithSelection(
TokenPainter painter,
Graphics2D g,
Rectangle r,
View view,
int fontHeight,
int y,
int selStart,
int selEnd) {
float x = r.x;
LayeredHighlighter h = (LayeredHighlighter) host.getHighlighter();
RSyntaxDocument document = (RSyntaxDocument) getDocument();
Element map = getElement();
int p0 = view.getStartOffset();
int lineNumber = map.getElementIndex(p0);
int p1 = view.getEndOffset(); // - 1;
setSegment(p0, p1 - 1, document, drawSeg);
// System.err.println("drawSeg=='" + drawSeg + "' (p0/p1==" + p0 + "/" + p1 + ")");
int start = p0 - drawSeg.offset;
Token token = document.getTokenListForLine(lineNumber);
// If this line is an empty line, then the token list is simply a
// null token. In this case, the line highlight will be skipped in
// the loop below, so unfortunately we must manually do it here.
if (token != null && token.getType() == Token.NULL) {
h.paintLayeredHighlights(g, p0, p1, r, host, this);
return;
}
// Loop through all tokens in this view and paint them!
while (token != null && token.isPaintable()) {
int p = calculateBreakPosition(p0, token, x);
x = r.x;
h.paintLayeredHighlights(g, p0, p, r, host, this);
while (token != null && token.isPaintable() && token.getEndOffset() - 1 < p) { // <=p) {
// Selection starts in this token
if (token.containsPosition(selStart)) {
if (selStart > token.getOffset()) {
tempToken.copyFrom(token);
tempToken.textCount = selStart - tempToken.getOffset();
x = painter.paint(tempToken, g, x, y, host, this);
tempToken.textCount = token.length();
tempToken.makeStartAt(selStart);
// Clone required since token and tempToken must be
// different tokens for else statement below
token = new TokenImpl(tempToken);
}
int selCount = Math.min(token.length(), selEnd - token.getOffset());
if (selCount == token.length()) {
x = painter.paintSelected(token, g, x, y, host, this);
} else {
tempToken.copyFrom(token);
tempToken.textCount = selCount;
x = painter.paintSelected(tempToken, g, x, y, host, this);
tempToken.textCount = token.length();
tempToken.makeStartAt(token.getOffset() + selCount);
token = tempToken;
x = painter.paint(token, g, x, y, host, this);
}
}
// Selection ends in this token
else if (token.containsPosition(selEnd)) {
tempToken.copyFrom(token);
tempToken.textCount = selEnd - tempToken.getOffset();
x = painter.paintSelected(tempToken, g, x, y, host, this);
tempToken.textCount = token.length();
tempToken.makeStartAt(selEnd);
token = tempToken;
x = painter.paint(token, g, x, y, host, this);
}
// This token is entirely selected
else if (token.getOffset() >= selStart && token.getEndOffset() <= selEnd) {
x = painter.paintSelected(token, g, x, y, host, this);
}
// This token is entirely unselected
else {
x = painter.paint(token, g, x, y, host, this);
}
token = token.getNextToken();
}
// If there's a token that's going to be split onto the next line
if (token != null && token.isPaintable() && token.getOffset() < p) {
int tokenOffset = token.getOffset();
Token orig = token;
token =
new TokenImpl(
drawSeg, tokenOffset - start, p - 1 - start, tokenOffset, token.getType());
// Selection starts in this token
if (token.containsPosition(selStart)) {
if (selStart > token.getOffset()) {
tempToken.copyFrom(token);
tempToken.textCount = selStart - tempToken.getOffset();
x = painter.paint(tempToken, g, x, y, host, this);
tempToken.textCount = token.length();
tempToken.makeStartAt(selStart);
// Clone required since token and tempToken must be
// different tokens for else statement below
token = new TokenImpl(tempToken);
}
int selCount = Math.min(token.length(), selEnd - token.getOffset());
if (selCount == token.length()) {
x = painter.paintSelected(token, g, x, y, host, this);
} else {
tempToken.copyFrom(token);
tempToken.textCount = selCount;
x = painter.paintSelected(tempToken, g, x, y, host, this);
tempToken.textCount = token.length();
tempToken.makeStartAt(token.getOffset() + selCount);
token = tempToken;
x = painter.paint(token, g, x, y, host, this);
}
}
// Selection ends in this token
else if (token.containsPosition(selEnd)) {
tempToken.copyFrom(token);
tempToken.textCount = selEnd - tempToken.getOffset();
x = painter.paintSelected(tempToken, g, x, y, host, this);
tempToken.textCount = token.length();
tempToken.makeStartAt(selEnd);
token = tempToken;
x = painter.paint(token, g, x, y, host, this);
}
// This token is entirely selected
else if (token.getOffset() >= selStart && token.getEndOffset() <= selEnd) {
x = painter.paintSelected(token, g, x, y, host, this);
}
// This token is entirely unselected
else {
x = painter.paint(token, g, x, y, host, this);
}
token = new TokenImpl(orig);
((TokenImpl) token).makeStartAt(p);
}
p0 = (p == p0) ? p1 : p;
y += fontHeight;
} // End of while (token!=null && token.isPaintable()).
// NOTE: We should re-use code from Token (paintBackground()) here,
// but don't because I'm just too lazy.
if (host.getEOLMarkersVisible()) {
g.setColor(host.getForegroundForTokenType(Token.WHITESPACE));
g.setFont(host.getFontForTokenType(Token.WHITESPACE));
g.drawString("\u00B6", x, y - fontHeight);
}
}
/**
* Draws a single view (i.e., a line of text for a wrapped view), wrapping the text onto multiple
* lines if necessary.
*
* @param painter The painter to use to render tokens.
* @param g The graphics context in which to paint.
* @param r The rectangle in which to paint.
* @param view The <code>View</code> to paint.
* @param fontHeight The height of the font being used.
* @param y The y-coordinate at which to begin painting.
*/
protected void drawView(
TokenPainter painter, Graphics2D g, Rectangle r, View view, int fontHeight, int y) {
float x = r.x;
LayeredHighlighter h = (LayeredHighlighter) host.getHighlighter();
RSyntaxDocument document = (RSyntaxDocument) getDocument();
Element map = getElement();
int p0 = view.getStartOffset();
int lineNumber = map.getElementIndex(p0);
int p1 = view.getEndOffset(); // - 1;
setSegment(p0, p1 - 1, document, drawSeg);
// System.err.println("drawSeg=='" + drawSeg + "' (p0/p1==" + p0 + "/" + p1 + ")");
int start = p0 - drawSeg.offset;
Token token = document.getTokenListForLine(lineNumber);
// If this line is an empty line, then the token list is simply a
// null token. In this case, the line highlight will be skipped in
// the loop below, so unfortunately we must manually do it here.
if (token != null && token.getType() == Token.NULL) {
h.paintLayeredHighlights(g, p0, p1, r, host, this);
return;
}
// Loop through all tokens in this view and paint them!
while (token != null && token.isPaintable()) {
int p = calculateBreakPosition(p0, token, x);
x = r.x;
h.paintLayeredHighlights(g, p0, p, r, host, this);
while (token != null && token.isPaintable() && token.getEndOffset() - 1 < p) { // <=p) {
x = painter.paint(token, g, x, y, host, this);
token = token.getNextToken();
}
if (token != null && token.isPaintable() && token.getOffset() < p) {
int tokenOffset = token.getOffset();
tempToken.set(
drawSeg.array, tokenOffset - start, p - 1 - start, tokenOffset, token.getType());
painter.paint(tempToken, g, x, y, host, this);
tempToken.copyFrom(token);
tempToken.makeStartAt(p);
token = new TokenImpl(tempToken);
}
p0 = (p == p0) ? p1 : p;
y += fontHeight;
} // End of while (token!=null && token.isPaintable()).
// NOTE: We should re-use code from Token (paintBackground()) here,
// but don't because I'm just too lazy.
if (host.getEOLMarkersVisible()) {
g.setColor(host.getForegroundForTokenType(Token.WHITESPACE));
g.setFont(host.getFontForTokenType(Token.WHITESPACE));
g.drawString("\u00B6", x, y - fontHeight);
}
}
/**
* Provides a mapping from the view coordinate space to the logical coordinate space of the
* model.
*
* @param fx the X coordinate
* @param fy the Y coordinate
* @param a the allocated region to render into
* @return the location within the model that best represents the given point in the view
* @see View#viewToModel
*/
@Override
public int viewToModel(float fx, float fy, Shape a, Position.Bias[] bias) {
// PENDING(prinz) implement bias properly
bias[0] = Position.Bias.Forward;
Rectangle alloc = (Rectangle) a;
RSyntaxDocument doc = (RSyntaxDocument) getDocument();
int x = (int) fx;
int y = (int) fy;
if (y < alloc.y) {
// above the area covered by this icon, so the the position
// is assumed to be the start of the coverage for this view.
return getStartOffset();
} else if (y > alloc.y + alloc.height) {
// below the area covered by this icon, so the the position
// is assumed to be the end of the coverage for this view.
return getEndOffset() - 1;
} else {
// positioned 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.
RSyntaxTextArea textArea = (RSyntaxTextArea) getContainer();
alloc.height = textArea.getLineHeight();
int p1 = getEndOffset();
// Get the token list for this line so we don't have to keep
// recomputing it if this logical line spans multiple
// physical lines.
Element map = doc.getDefaultRootElement();
int p0 = getStartOffset();
int line = map.getElementIndex(p0);
Token tlist = doc.getTokenListForLine(line);
// Look at each physical line-chunk of this logical line.
while (p0 < p1) {
// We can always use alloc.x since we always break
// lines so they start at the beginning of a physical
// line.
TokenSubList subList =
TokenUtils.getSubTokenList(
tlist, p0, WrappedSyntaxView.this, textArea, alloc.x, lineCountTempToken);
tlist = subList != null ? subList.tokenList : null;
int p = calculateBreakPosition(p0, tlist, alloc.x);
// If desired view position is in this physical chunk.
if ((y >= alloc.y) && (y < (alloc.y + alloc.height))) {
// Point is to the left of the line
if (x < alloc.x) {
return p0;
}
// Point is to the right of the line
else if (x > alloc.x + alloc.width) {
return p - 1;
}
// Point is in this physical line!
else {
// Start at alloc.x since this chunk starts
// at the beginning of a physical line.
int n = tlist.getListOffset(textArea, WrappedSyntaxView.this, alloc.x, x);
// NOTE: We needed to add the max() with
// p0 as getTokenListForLine returns -1
// for empty lines (just a null token).
// How did this work before?
// FIXME: Have null tokens have their
// offset but a -1 length.
return Math.max(Math.min(n, p1 - 1), p0);
} // End of else.
} // End of if ((y>=alloc.y) && ...
p0 = (p == p0) ? p1 : p;
alloc.y += alloc.height;
} // End of while (p0<p1).
return getEndOffset() - 1;
} // End of else.
}
public int getLineNumberAtCaret(int caretPosition) {
Element root = getDocument().getDefaultRootElement();
return root.getElementIndex(caretPosition) + 1;
}
/** {@inheritDoc} */
@Override
public int yForLineContaining(Rectangle alloc, int offs) throws BadLocationException {
Element map = getElement();
int line = map.getElementIndex(offs);
return yForLine(alloc, line);
}
private void insertNewlineWithAutoIndent(JTextComponent text) {
try {
int caretPos = text.getCaretPosition();
StyledDocument doc = (StyledDocument) text.getDocument();
Element map = doc.getDefaultRootElement();
int lineNum = map.getElementIndex(caretPos);
Element line = map.getElement(lineNum);
int start = line.getStartOffset();
int end = line.getEndOffset() - 1;
int len = end - start;
String s = doc.getText(start, len);
String leadingWS = PythonIndentation.getLeadingWhitespace(doc, start, caretPos - start);
StringBuffer sb = new StringBuffer("\n");
sb.append(leadingWS);
// TODO better control over automatic indentation
indentationLogic.checkIndent(leadingWS, lineNum + 1);
// If there is only whitespace between the caret and
// the EOL, pressing Enter auto-indents the new line to
// the same place as the previous line.
int nonWhitespacePos = PythonIndentation.atEndOfLine(doc, caretPos, start, s, len);
if (nonWhitespacePos == -1) {
if (leadingWS.length() == len) {
// If the line was nothing but whitespace, select it
// so its contents get removed.
text.setSelectionStart(start);
} else {
// Select the whitespace between the caret and the EOL
// to remove it
text.setSelectionStart(caretPos);
}
text.setSelectionEnd(end);
text.replaceSelection(sb.toString());
// auto-indentation for python statements like if, while, for, try,
// except, def, class and auto-deindentation for break, continue,
// pass, return
analyseDocument(doc, lineNum, indentationLogic);
// auto-completion: add colon if it is obvious
if (indentationLogic.shouldAddColon()) {
doc.insertString(caretPos, ":", null);
indentationLogic.setLastLineEndsWithColon();
}
int lastLineChange = indentationLogic.shouldChangeLastLineIndentation();
int nextLineChange = indentationLogic.shouldChangeNextLineIndentation();
if (lastLineChange != 0) {
Debug.log(5, "change line %d indentation by %d columns", lineNum + 1, lastLineChange);
changeIndentation((DefaultStyledDocument) doc, lineNum, lastLineChange);
// nextLineChange was determined based on indentation of last line before
// the change
nextLineChange += lastLineChange;
}
if (nextLineChange != 0) {
Debug.log(5, "change line %d indentation by %d columns", lineNum + 2, nextLineChange);
changeIndentation((DefaultStyledDocument) doc, lineNum + 1, nextLineChange);
}
} // If there is non-whitespace between the caret and the
// EOL, pressing Enter takes that text to the next line
// and auto-indents it to the same place as the last
// line. Additional auto-indentation or dedentation for
// specific python statements is only done for the next line.
else {
text.setCaretPosition(nonWhitespacePos);
doc.insertString(nonWhitespacePos, sb.toString(), null);
analyseDocument(doc, lineNum, indentationLogic);
int nextLineChange = indentationLogic.shouldChangeNextLineIndentation();
if (nextLineChange != 0) {
Debug.log(5, "change line %d indentation by %d columns", lineNum + 2, nextLineChange);
changeIndentation((DefaultStyledDocument) doc, lineNum + 1, nextLineChange);
}
}
} catch (BadLocationException ble) {
text.replaceSelection("\n");
Debug.error(me + "Problem while inserting new line with auto-indent\n%s", ble.getMessage());
}
}