void CloudTableView::selectChanged(QModelIndexList lst)
{
m_selectedtems.clear();
foreach (QModelIndex idx, lst) {
if (idx.column()!=0) lst.removeOne(idx);
}
foreach (QModelIndex idx, lst) {
QString tmp = cs->fullPath + myProxyModel->
data(myProxyModel->index(idx.row(),0),Qt::DisplayRole).toString();
if (!tmp.contains("/.."))
m_selectedtems << cs->fullPath + CTModel->
data(ConvertIndexToRealModel(myProxyModel->index(idx.row(),0))
,Qt::DisplayRole).toString();
}
QItemSelectionModel::SelectionFlags AMActionHistoryTreeView3::selectionCommand(const QModelIndex &index, const QEvent *selectionEvent) const{
// Initialize by calling the parent version
QItemSelectionModel::SelectionFlags retFlags = QTreeView::selectionCommand(index, selectionEvent);
bool hasShiftModifier, hasControlModifier;
// If we have a valid index we have a lot of work to do (also make sure this thing is actually an AMActionHistoryModel viewing tree)
if(index.isValid()){
AMActionHistoryModel3 *historyModel = qobject_cast<AMActionHistoryModel3*>(model());
// We only care about the mouse button press events otherwise return the parent class call
if( !historyModel || (selectionEvent->type() != QEvent::MouseButtonPress) )
return QTreeView::selectionCommand(index, selectionEvent);
QMouseEvent *mouseEvent = (QMouseEvent*)selectionEvent;
// Ignore clicks on non-selectable indices
// We can ignore: not enabled indexes, and not selectable indexes
if(!index.flags().testFlag(Qt::ItemIsEnabled) || !index.flags().testFlag(Qt::ItemIsSelectable))
return QTreeView::selectionCommand(index, selectionEvent);
// Grab keyboard shift and control modifiers
Qt::KeyboardModifiers currentModifiers = mouseEvent->modifiers();
hasControlModifier = currentModifiers&Qt::ControlModifier;
hasShiftModifier = currentModifiers&Qt::ShiftModifier;
ParentSelectMap selectMap = model()->data(index, AMActionHistoryModel3::ParentSelectRole).value<ParentSelectMap>();
// This is pretty bad, you can tell too much is in here that doesn't belong when I need to do a const cast
AMActionHistoryTreeView3 *checkViewer = const_cast<AMActionHistoryTreeView3*>(this);
bool parentIsSelected = false;
// Figure out if the parent is selected via the mapping or the selection model
if(index.parent().isValid()){
ParentSelectMap parentsSelectMap = model()->data(index.parent(), AMActionHistoryModel3::ParentSelectRole).value<ParentSelectMap>();
if(parentsSelectMap.contains(checkViewer))
parentIsSelected |= parentsSelectMap.value(checkViewer);
parentIsSelected |= selectionModel()->isSelected(index.parent());
}
// On control clicks where the parent is selected and this index is as well, do the group deselect and return noUpdate in the selection flags
if(hasControlModifier && index.parent().isValid() && parentIsSelected && selectMap.contains(checkViewer) && selectMap.value(checkViewer)){
historyModel->markIndexGroupAsDeselected(index, checkViewer);
return QItemSelectionModel::NoUpdate;
}
// On control clicks where the parent is selected and this index is not, do the group select and return noUpdate in the selection flags
else if(hasControlModifier && index.parent().isValid() && parentIsSelected && selectMap.contains(checkViewer) && !selectMap.value(checkViewer)){
historyModel->markIndexGroupAsSelected(index, checkViewer);
return QItemSelectionModel::NoUpdate;
}
// Ignore regular clicks on the an index that is already actually selected if it's the only one selected
if( !hasControlModifier && (actuallySelectedByClickingCount_ == 1) && (selectionModel()->selectedIndexes().contains(index)) ){
return QItemSelectionModel::NoUpdate;
}
}
// Log some flags ... might be an easier way now that I know how to use QFlag::testFlag()
bool clearFlag = (retFlags&QItemSelectionModel::Clear);
bool selectFlag = (retFlags&QItemSelectionModel::Select);
bool deselectFlag = (retFlags&QItemSelectionModel::Deselect);
bool toggleFlag = (retFlags&QItemSelectionModel::Toggle);
bool indexAlreadyOn = selectionModel()->selectedIndexes().contains(index);
bool noUpdateFlag = (retFlags&QItemSelectionModel::NoUpdate);
// An actual selection! Selected OR (Toggled AND NOT Currently On) OR (noUpdate AND Currently On)
bool selectedTrue = selectFlag || (toggleFlag && !indexAlreadyOn) || (noUpdateFlag && indexAlreadyOn);
// An actual deselection! Deselected OR (Toggled AND Currently On) OR (noUpdate AND NOT Currently On) OR (Actually selected an invalid index)
bool selectedFalse = deselectFlag || (toggleFlag && indexAlreadyOn) || (noUpdateFlag && !indexAlreadyOn) || (selectedTrue && !index.isValid());
// If we actually selected and the column is 0 (we only care about that one) log the state and emit actuallySelectedByClicking
if(selectedTrue && (index.column() == 0) ){
lastClickWasDeselect_ = false;
lastClickedIndex_ = index;
emit actuallySelectedByClicking(index, clearFlag);
}
// If we actually deselected and the column is 0 (we only care about that one) log the state (particularily lastClickWasDeselect) and emit actuallyDeselectedByClicking
else if(selectedFalse && (index.column() == 0) ){
QModelIndexList currentSelections = selectionModel()->selection().indexes();
if(currentSelections.count() == 2){
currentSelections.removeOne(index);
lastClickedIndex_ = currentSelections.at(0);
lastClickWasDeselect_ = false;
}
else
lastClickWasDeselect_ = true;
emit actuallyDeselectedByClicking(index, clearFlag);
}
// If neither selected nor deselected but clear flag is on then emit clearedByClicking
else if(clearFlag){
lastClickWasDeselect_ = false;
emit clearedByClicking();
}
// Return the flags we have
return retFlags;
}
void AMActionHistoryTreeView3::mousePressEvent(QMouseEvent *event){
// Ignore mouse clicks if the cursor shows forbidden
if(shiftKeyDown_ && hasOverriddenShiftCursor_){
event->ignore();
}
// Actually handling valid shift-clicks
else if(shiftKeyDown_){
AMActionHistoryModel3 *historyModel = qobject_cast<AMActionHistoryModel3*>(model());
QModelIndex index = indexAt(event->pos());
// We can ignore: bad models, invalid indexes, not enabled indexes, and not selectable indexes
if(!historyModel || !index.isValid() || !index.flags().testFlag(Qt::ItemIsEnabled) || !index.flags().testFlag(Qt::ItemIsSelectable))
event->ignore();
// Grab current selection from model and the indices between the shift click
QItemSelection currentSelection = selectionModel()->selection();
QItemSelection newSelection = historyModel->indicesBetween(index, lastClickedIndex_);
// Call the selectionCommand function and merge the current and new selections
QItemSelectionModel::SelectionFlags command = selectionCommand(index, event);
currentSelection.merge(newSelection, command);
// Clear the selection and select the combined list
selectionModel()->clearSelection();
selectionModel()->select(currentSelection, command);
// Grab the list indices between the shift click so we can apply the right parentSelected states to them
QModelIndexList interiorIndices = newSelection.indexes();
// We only care about lists that have interior elements, the indicesBetween call returns the ends as well
if(interiorIndices.count() >= 2){
// Grab the clear flag for the signal emitted below
bool clearFlag = command.testFlag(QItemSelectionModel::Clear);
// Not sure if the indices are ordered correctly, so figure out the min and max to remove them (they should be the ends we don't care about)
QModelIndex minRowIndex = interiorIndices.at(0);
int minRowValue = minRowIndex.row();
QModelIndex maxRowIndex = interiorIndices.at(1);
int maxRowValue = maxRowIndex.row();
for(int x = 0; x < interiorIndices.count(); x++){
if(interiorIndices.at(x).row() < minRowValue){
minRowIndex = interiorIndices.at(x);
minRowValue = minRowIndex.row();
}
if(interiorIndices.at(x).row() > maxRowValue){
maxRowIndex = interiorIndices.at(x);
maxRowValue = maxRowIndex.row();
}
}
// Remove both ends
interiorIndices.removeOne(maxRowIndex);
interiorIndices.removeOne(minRowIndex);
// For all interior indices emulate a click by emitting the actuallySelectedByClicking signal ... then the regular chain of events can happen to parentSelect the children
for(int x = 0; x < interiorIndices.count(); x++)
emit actuallySelectedByClicking(interiorIndices.at(x), clearFlag);
}
// Accept the event
event->accept();
}
// Ignore mouse clicks if the cursor shows forbidden
else if(controlKeyDown_ && hasOverriddenControlCursor_){
event->ignore();
}
// Falls through, call the parent class
else
QTreeView::mousePressEvent(event);
}
