private void updateChildCollapsedLineCount(int count) {
childCollapsedLineCount += count;
// if (childCollapsedLineCount>getLineCount()) {
// Thread.dumpStack();
// }
if (!collapsed && parent != null) {
parent.updateChildCollapsedLineCount(count);
}
}
/**
* Sets whether this <code>Fold</code> is collapsed. Calling this method will update both the text
* area and all <code>Gutter</code> components.
*
* @param collapsed Whether this fold should be collapsed.
* @see #isCollapsed()
* @see #toggleCollapsedState()
*/
public void setCollapsed(boolean collapsed) {
if (collapsed != this.collapsed) {
// Change our fold state and cached info about folded line count.
int lineCount = getLineCount();
int linesToCollapse = lineCount - childCollapsedLineCount;
if (!collapsed) { // If we're expanding
linesToCollapse = -linesToCollapse;
}
// System.out.println("Hiding lines: " + linesToCollapse +
// " (" + lineCount + ", " + linesToCollapse + ")");
this.collapsed = collapsed;
if (parent != null) {
parent.updateChildCollapsedLineCount(linesToCollapse);
}
// If an end point of the selection is being hidden, move the caret
// "out" of the fold.
if (collapsed) {
int dot = textArea.getSelectionStart(); // Forgive variable name
Element root = textArea.getDocument().getDefaultRootElement();
int dotLine = root.getElementIndex(dot);
boolean updateCaret = containsLine(dotLine);
if (!updateCaret) {
int mark = textArea.getSelectionEnd();
if (mark != dot) {
int markLine = root.getElementIndex(mark);
updateCaret = containsLine(markLine);
}
}
if (updateCaret) {
dot = root.getElement(getStartLine()).getEndOffset() - 1;
textArea.setCaretPosition(dot);
}
}
textArea.foldToggled(this);
}
}