void KUndo2QStack::purgeRedoState()
{
bool macro = !m_macro_stack.isEmpty();
if (macro) return;
bool redoStateChanged = false;
bool cleanStateChanged = false;
while (m_index < m_command_list.size()) {
delete m_command_list.takeLast();
redoStateChanged = true;
}
if (m_clean_index > m_index) {
m_clean_index = -1; // we've deleted the clean state
cleanStateChanged = true;
}
if (redoStateChanged) {
emit canRedoChanged(canRedo());
emit redoTextChanged(redoText());
}
if (cleanStateChanged) {
emit cleanChanged(isClean());
}
}
void QUndoStack::clear()
{
Q_D(QUndoStack);
if (d->command_list.isEmpty())
return;
bool was_clean = isClean();
d->macro_stack.clear();
qDeleteAll(d->command_list);
d->command_list.clear();
d->index = 0;
d->clean_index = 0;
emit indexChanged(0);
emit canUndoChanged(false);
emit undoTextChanged(QString());
emit canRedoChanged(false);
emit redoTextChanged(QString());
if (!was_clean)
emit cleanChanged(true);
}
void KUndo2QStack::setIndex(int idx, bool clean)
{
bool was_clean = m_index == m_clean_index;
if (m_lastMergedIndex <= idx) {
m_lastMergedSetCount = idx - m_lastMergedIndex;
} else {
m_lastMergedSetCount = 1;
m_lastMergedIndex = idx-1;
}
if(idx == 0){
m_lastMergedSetCount = 0;
m_lastMergedIndex = 0;
}
if (idx != m_index) {
m_index = idx;
emit indexChanged(m_index);
emit canUndoChanged(canUndo());
emit undoTextChanged(undoText());
emit canRedoChanged(canRedo());
emit redoTextChanged(redoText());
}
if (clean)
m_clean_index = m_index;
bool is_clean = m_index == m_clean_index;
if (is_clean != was_clean)
emit cleanChanged(is_clean);
}
void UndoStack::setClean() noexcept
{
if (isClean())
return;
mCleanIndex = mCurrentIndex;
emit cleanChanged(true);
}
void UndoStack::execCmd(UndoCommand* cmd, bool autoMerge) throw (Exception)
{
Q_CHECK_PTR(cmd);
if (mCommandActive)
{
delete cmd;
throw RuntimeError(__FILE__, __LINE__, QString(), tr("Another command is active "
"at the moment. Please finish that command to continue."));
}
if (mCleanIndex > mCurrentIndex)
mCleanIndex = -1; // the clean state will no longer exist -> make the index invalid
// first, delete all commands above the current index (make redo impossible)
// --> in reverse order (from top to bottom)!
while (mCurrentIndex < mCommands.count())
delete mCommands.takeLast();
Q_ASSERT(mCurrentIndex == mCommands.count());
try
{
cmd->redo(); // throws an exception on error
}
catch (Exception& e)
{
// delete the command because this UndoStack object will NOT take the ownership
// over the failed command! and then rethrow the exception...
delete cmd;
throw;
}
// command successfully executed, try to merge it with the last executed command
bool merged = false;
if ((autoMerge) && (mCurrentIndex > 0))
merged = mCommands[mCurrentIndex-1]->mergeWith(cmd); // try merging the commands
if (!merged)
{
// command was not merged --> add it to the command stack and emit signals
mCommands.append(cmd);
mCurrentIndex++;
// emit signals
emit undoTextChanged(QString(tr("Undo: %1")).arg(cmd->getText()));
emit redoTextChanged(tr("Redo"));
emit canUndoChanged(true);
emit canRedoChanged(false);
emit cleanChanged(false);
}
}
void UndoStack::redo() throw (Exception)
{
if (!canRedo())
return;
mCommands[mCurrentIndex]->redo(); // throws an exception on error
mCurrentIndex++;
// emit signals
emit undoTextChanged(getUndoText());
emit redoTextChanged(getRedoText());
emit canUndoChanged(canUndo());
emit canRedoChanged(canRedo());
emit cleanChanged(isClean());
}
void UndoStack::undo() throw (Exception)
{
if ((!canUndo()) || (mCommandActive)) // if a command is active, undo() is not allowed
return;
mCommands[mCurrentIndex-1]->undo(); // throws an exception on error
mCurrentIndex--;
// emit signals
emit undoTextChanged(getUndoText());
emit redoTextChanged(getRedoText());
emit canUndoChanged(canUndo());
emit canRedoChanged(canRedo());
emit cleanChanged(isClean());
}
void KUndo2QStack::setIndex(int idx, bool clean)
{
bool was_clean = m_index == m_clean_index;
if (idx != m_index) {
m_index = idx;
emit indexChanged(m_index);
emit canUndoChanged(canUndo());
emit undoTextChanged(undoText());
emit canRedoChanged(canRedo());
emit redoTextChanged(redoText());
}
if (clean)
m_clean_index = m_index;
bool is_clean = m_index == m_clean_index;
if (is_clean != was_clean)
emit cleanChanged(is_clean);
}
void UndoStack::abortCommand() throw (Exception)
{
Q_ASSERT(mCurrentIndex == mCommands.count());
if (!mCommandActive)
throw LogicError(__FILE__, __LINE__, QString(), tr("No command active!"));
mCommands.last()->undo(); // throws an exception on error
mCurrentIndex--;
mCommandActive = false;
delete mCommands.takeLast(); // delete and remove the aborted command from the stack
// emit signals
emit undoTextChanged(getUndoText());
emit redoTextChanged(tr("Redo"));
emit canUndoChanged(canUndo());
emit canRedoChanged(false);
emit cleanChanged(isClean());
emit commandAborted(); // this is important!
}
void Editor::on_proxyMessageReceived(QString msg, QVariant data)
{
emit messageReceived(msg, data);
if(msg == "J_EVT_READY") {
m_loaded = true;
emit editorReady();
} else if(msg == "J_EVT_CONTENT_CHANGED")
emit contentChanged();
else if(msg == "J_EVT_CLEAN_CHANGED")
emit cleanChanged(data.toBool());
else if(msg == "J_EVT_CURSOR_ACTIVITY")
emit cursorActivity();
else if(msg == "J_EVT_GOT_FOCUS")
emit gotFocus();
else if(msg == "J_EVT_CURRENT_LANGUAGE_CHANGED") {
QVariantMap map = data.toMap();
emit currentLanguageChanged(map.value("id").toString(),
map.value("name").toString());
}
}
void KUndo2QStack::clear()
{
if (m_command_list.isEmpty())
return;
bool was_clean = isClean();
m_macro_stack.clear();
qDeleteAll(m_command_list);
m_command_list.clear();
m_index = 0;
m_clean_index = 0;
emit indexChanged(0);
emit canUndoChanged(false);
emit undoTextChanged(QString());
emit canRedoChanged(false);
emit redoTextChanged(QString());
if (!was_clean)
emit cleanChanged(true);
}
int QUndoGroup::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
_id = QObject::qt_metacall(_c, _id, _a);
if (_id < 0)
return _id;
if (_c == QMetaObject::InvokeMetaMethod) {
switch (_id) {
case 0: activeStackChanged((*reinterpret_cast< QUndoStack*(*)>(_a[1]))); break;
case 1: indexChanged((*reinterpret_cast< int(*)>(_a[1]))); break;
case 2: cleanChanged((*reinterpret_cast< bool(*)>(_a[1]))); break;
case 3: canUndoChanged((*reinterpret_cast< bool(*)>(_a[1]))); break;
case 4: canRedoChanged((*reinterpret_cast< bool(*)>(_a[1]))); break;
case 5: undoTextChanged((*reinterpret_cast< const QString(*)>(_a[1]))); break;
case 6: redoTextChanged((*reinterpret_cast< const QString(*)>(_a[1]))); break;
case 7: undo(); break;
case 8: redo(); break;
case 9: setActiveStack((*reinterpret_cast< QUndoStack*(*)>(_a[1]))); break;
default: ;
}
_id -= 10;
}
return _id;
}
void UndoStack::clear() noexcept
{
if (mCommands.isEmpty())
return;
if (mCommandActive)
try {abortCommand();} catch (...) {}
// delete all commands in the stack from top to bottom (newest first, oldest last)!
while (!mCommands.isEmpty())
delete mCommands.takeLast();
mCurrentIndex = 0;
mCleanIndex = 0;
mCommandActive = false;
// emit signals
emit undoTextChanged(tr("Undo"));
emit redoTextChanged(tr("Redo"));
emit canUndoChanged(false);
emit canRedoChanged(false);
emit cleanChanged(true);
}
