bool ShadowTree::tryCommit(ShadowTreeCommitTransaction transaction) const {
SystraceSection s("ShadowTree::tryCommit");
auto telemetry = MountingTelemetry{};
telemetry.willCommit();
SharedRootShadowNode oldRootShadowNode;
{
// Reading `rootShadowNode_` in shared manner.
std::shared_lock<better::shared_mutex> lock(commitMutex_);
oldRootShadowNode = rootShadowNode_;
}
UnsharedRootShadowNode newRootShadowNode = transaction(oldRootShadowNode);
if (!newRootShadowNode) {
return false;
}
std::vector<LayoutableShadowNode const *> affectedLayoutableNodes{};
affectedLayoutableNodes.reserve(1024);
telemetry.willLayout();
newRootShadowNode->layout(&affectedLayoutableNodes);
telemetry.didLayout();
newRootShadowNode->sealRecursive();
auto revisionNumber = ShadowTreeRevision::Number{};
{
// Updating `rootShadowNode_` in unique manner if it hasn't changed.
std::unique_lock<better::shared_mutex> lock(commitMutex_);
if (rootShadowNode_ != oldRootShadowNode) {
return false;
}
rootShadowNode_ = newRootShadowNode;
{
std::lock_guard<std::mutex> dispatchLock(EventEmitter::DispatchMutex());
updateMountedFlag(
oldRootShadowNode->getChildren(), newRootShadowNode->getChildren());
}
revisionNumber_++;
revisionNumber = revisionNumber_;
}
emitLayoutEvents(affectedLayoutableNodes);
telemetry.didCommit();
mountingCoordinator_->push(
ShadowTreeRevision{newRootShadowNode, revisionNumber, telemetry});
if (delegate_) {
delegate_->shadowTreeDidCommit(*this, mountingCoordinator_);
}
return true;
}
void toMain::commandCallback ( int cmd )
{
QWidget * focus = qApp->focusWidget();
if ( focus ) {
toEditWidget * edit = findEdit ( focus );
if ( edit && edit != Edit )
setEditWidget ( edit );
else if ( focus->inherits ( "QLineEdit" ) ||
focus->isA ( "QSpinBox" ) )
editDisable ( Edit );
}
if ( Tools[cmd] )
Tools[cmd]->createWindow();
else if ( cmd >= TO_TOOL_ABOUT_ID && cmd <= TO_TOOL_ABOUT_ID_END ) {
if ( Tools[cmd-TO_ABOUT_ID_OFFSET] )
Tools[cmd-TO_ABOUT_ID_OFFSET]->about ( this );
} else if ( cmd >= TO_WINDOWS_WINDOWS && cmd <= TO_WINDOWS_END ) {
if ( cmd - TO_WINDOWS_WINDOWS < int ( workspace() ->windowList().count() ) )
workspace() ->windowList().at ( cmd - TO_WINDOWS_WINDOWS ) ->setFocus();
} else if ( cmd >= TO_STATUS_ID && cmd <= TO_STATUS_ID_END ) {
QString str = StatusMenu->text ( cmd );
new toMemoEditor ( this, str );
} else {
QWidget *currWidget = qApp->focusWidget();
toEditWidget *edit = NULL;
while ( currWidget && !edit ) {
edit = dynamic_cast<toEditWidget *> ( currWidget );
currWidget = currWidget->parentWidget();
}
if ( edit ) {
switch ( cmd ) {
case TO_EDIT_REDO:
edit->editRedo();
break;
case TO_EDIT_UNDO:
edit->editUndo();
break;
case TO_EDIT_COPY:
edit->editCopy();
break;
case TO_EDIT_PASTE:
edit->editPaste();
break;
case TO_EDIT_CUT:
edit->editCut();
break;
case TO_EDIT_SELECT_ALL:
edit->editSelectAll();;
break;
case TO_EDIT_READ_ALL:
edit->editReadAll();
break;
case TO_EDIT_SEARCH:
if ( !Search )
Search = new toSearchReplace ( this );
edit->editSearch ( Search );
break;
case TO_FILE_OPEN:
edit->editOpen();
break;
case TO_FILE_SAVE_AS:
edit->editSave ( true );
break;
case TO_FILE_SAVE:
edit->editSave ( false );
break;
case TO_FILE_PRINT:
edit->editPrint();
break;
}
}
switch ( cmd ) {
case TO_FILE_COMMIT:
try {
toConnection & conn = currentConnection();
emit willCommit ( conn, true );
conn.commit();
setNeedCommit ( conn, false );
}
TOCATCH
break;
case TO_FILE_CLEARCACHE:
try {
currentConnection().rereadCache();
}
TOCATCH
toMainWidget() ->checkCaching();
break;
case TO_FILE_ROLLBACK:
try {
toConnection &conn = currentConnection();
emit willCommit ( conn, false );
conn.rollback();
setNeedCommit ( conn, false );
}
TOCATCH
break;
case TO_FILE_CURRENT:
ConnectionSelection->setFocus();
break;
case TO_FILE_QUIT:
close ( true );
break;
case TO_EDIT_SEARCH_NEXT:
if ( Search )
Search->searchNext();
break;
case TO_WINDOWS_CASCADE:
workspace() ->cascade();
break;
case TO_WINDOWS_TILE:
workspace() ->tile();
break;
case TO_NEW_CONNECTION:
addConnection();
break;
case TO_HELP_CONTEXT:
contextHelp();
break;
case TO_HELP_CONTENTS:
toHelp::displayHelp ( "toc.htm" );
break;
case TO_HELP_ABOUT:
case TO_HELP_LICENSE:
case TO_HELP_QUOTES: {
toAbout *about = new toAbout ( cmd - TO_HELP_ABOUT, this, "About TOra", true );
about->exec();
delete about;
}
break;
case TO_HELP_REGISTER:
toCheckLicense ( true );
break;
case TO_EDIT_OPTIONS:
toPreferences::displayPreferences ( this );
break;
case TO_WINDOWS_CLOSE_ALL:
while ( workspace() ->windowList().count() > 0 && workspace() ->windowList().at ( 0 ) )
if ( workspace() ->windowList().at ( 0 ) &&
!workspace() ->windowList().at ( 0 ) ->close ( true ) )
return;
break;
case TO_WINDOWS_CLOSE:
QWidget *widget = workspace() ->activeWindow();
if ( widget )
widget->close ( true );
break;
}
}
}
