void Indenter::reindent(QTextDocument *doc, const QTextCursor &cursor, const TabSettings &tabSettings)
{
if (cursor.hasSelection()) {
QTextBlock block = doc->findBlock(cursor.selectionStart());
const QTextBlock end = doc->findBlock(cursor.selectionEnd()).next();
// skip empty blocks
while (block.isValid() && block != end) {
QString bt = block.text();
if (tabSettings.firstNonSpace(bt) < bt.size())
break;
indentBlock(doc, block, QChar::Null, tabSettings);
block = block.next();
}
int previousIndentation = tabSettings.indentationColumn(block.text());
indentBlock(doc, block, QChar::Null, tabSettings);
int currentIndentation = tabSettings.indentationColumn(block.text());
int delta = currentIndentation - previousIndentation;
block = block.next();
while (block.isValid() && block != end) {
tabSettings.reindentLine(block, delta);
block = block.next();
}
} else {
indentBlock(doc, cursor.block(), QChar::Null, tabSettings);
}
}
int AutoCompleter::paragraphSeparatorAboutToBeInserted(QTextCursor &cursor,
const TabSettings &tabSettings)
{
if (!m_autoParenthesesEnabled)
return 0;
QTextDocument *doc = cursor.document();
if (doc->characterAt(cursor.position() - 1) != QLatin1Char('{'))
return 0;
if (!contextAllowsAutoParentheses(cursor))
return 0;
// verify that we indeed do have an extra opening brace in the document
QTextBlock block = cursor.block();
const QString textFromCusror = block.text().mid(cursor.positionInBlock()).trimmed();
int braceDepth = TextDocumentLayout::braceDepth(doc->lastBlock());
if (braceDepth <= 0 && (textFromCusror.isEmpty() || textFromCusror.at(0) != QLatin1Char('}')))
return 0; // braces are all balanced or worse, no need to do anything and separator inserted not between '{' and '}'
// we have an extra brace , let's see if we should close it
/* verify that the next block is not further intended compared to the current block.
This covers the following case:
if (condition) {|
statement;
*/
int indentation = tabSettings.indentationColumn(block.text());
if (block.next().isValid()) { // not the last block
block = block.next();
//skip all empty blocks
while (block.isValid() && tabSettings.onlySpace(block.text()))
block = block.next();
if (block.isValid()
&& tabSettings.indentationColumn(block.text()) > indentation)
return 0;
}
const QString &textToInsert = insertParagraphSeparator(cursor);
int pos = cursor.position();
cursor.insertBlock();
cursor.insertText(textToInsert);
cursor.setPosition(pos);
// if we actually insert a separator, allow it to be overwritten if
// user types it
if (!textToInsert.isEmpty())
m_allowSkippingOfBlockEnd = true;
return 1;
}
QTextCursor BaseTextBlockSelection::selection(const TabSettings &ts) const
{
QTextCursor cursor = firstBlock;
if (anchor <= TopRight) {
cursor.setPosition(lastBlock.block().position() + ts.positionAtColumn(lastBlock.block().text(), lastVisualColumn));
cursor.setPosition(firstBlock.block().position() + ts.positionAtColumn(firstBlock.block().text(), firstVisualColumn),
QTextCursor::KeepAnchor);
} else {
cursor.setPosition(firstBlock.block().position() + ts.positionAtColumn(firstBlock.block().text(), firstVisualColumn));
cursor.setPosition(lastBlock.block().position() + ts.positionAtColumn(lastBlock.block().text(), lastVisualColumn),
QTextCursor::KeepAnchor);
}
return cursor;
}
void BaseTextBlockSelection::fromSelection(const TabSettings &ts, const QTextCursor &selection)
{
firstBlock = selection;
firstBlock.setPosition(selection.selectionStart());
firstVisualColumn = ts.columnAt(firstBlock.block().text(), firstBlock.positionInBlock());
lastBlock = selection;
lastBlock.setPosition(selection.selectionEnd());
lastVisualColumn = ts.columnAt(lastBlock.block().text(), lastBlock.positionInBlock());
if (selection.anchor() > selection.position())
anchor = TopLeft;
else
anchor = BottomRight;
firstBlock.movePosition(QTextCursor::StartOfBlock);
lastBlock.movePosition(QTextCursor::EndOfBlock);
}
void Indenter::indentBlock(QTextDocument *doc,
const QTextBlock &block,
const QChar &typedChar,
const TabSettings &tabSettings)
{
Q_UNUSED(doc);
Q_UNUSED(typedChar);
const int indent = indentFor(block, tabSettings);
if (indent < 0)
return;
tabSettings.indentLine(block, indent);
}
int NormalIndenter::indentFor(const QTextBlock &block, const TabSettings &tabSettings)
{
Q_UNUSED(tabSettings);
QTextBlock previous = block.previous();
if (!previous.isValid())
return 0;
const QString previousText = previous.text();
// Empty line indicates a start of a new paragraph. Leave as is.
if (previousText.isEmpty() || previousText.trimmed().isEmpty())
return 0;
return tabSettings.indentationColumn(previousText);
}
int BaseTextBlockSelection::position(const TabSettings &ts) const
{
const QTextBlock &block = anchor <= TopRight ? lastBlock.block() : firstBlock.block();
const int column = anchor % 2 ? firstVisualColumn : lastVisualColumn;
return block.position() + ts.positionAtColumn(block.text(), column);
}