Undo: unify selection behavior in dive-list commands

Some commands tried to retain the current selection on undo/redo,
others set the selection to the modified dives.

The latter was introduced because it was easier in some cases, but
it is probably more user-friendly because the user gets feedback
on the change.

Therefore, unify to always select the affected dives on undo()/redo().

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-06-23 11:13:41 +02:00 committed by bstoeger
parent 27944a52b1
commit e1abf9485c
7 changed files with 48 additions and 56 deletions

View file

@ -47,12 +47,13 @@ bool setSelection(const std::vector<dive *> &selection, dive *currentDive)
// To do so, generate vectors of dives to be selected and deselected.
// We send signals batched by trip, so keep track of trip/dive pairs.
QVector<dive *> divesToSelect;
QVector<dive *> divesToDeselect;
divesToSelect.reserve(selection.size());
// TODO: We might want to keep track of selected dives in a more efficient way!
int i;
dive *d;
amount_selected = 0; // We recalculate amount_selected
bool selectionChanged = false;
for_each_dive(i, d) {
// We only modify dives that are currently visible.
if (d->hidden_by_filter) {
@ -65,24 +66,21 @@ bool setSelection(const std::vector<dive *> &selection, dive *currentDive)
// TODO: By sorting the list in the same way as the backend, this could be made more efficient.
bool newState = std::find(selection.begin(), selection.end(), d) != selection.end();
if (newState) {
++amount_selected;
divesToSelect.push_back(d);
}
// TODO: Instead of using select_dive() and deselect_dive(), we set selected directly.
// The reason is that deselect() automatically sets a new current dive, which we
// don't want, as we set it later anyway.
// There is other parts of the C++ code that touches the innards directly, but
// ultimately this should be pushed down to C.
if (newState && !d->selected) {
d->selected = true;
++amount_selected;
divesToSelect.push_back(d);
} else if (!newState && d->selected) {
d->selected = false;
divesToDeselect.push_back(d);
}
selectionChanged |= d->selected != newState;
d->selected = newState;
}
// Send the select and deselect signals
emit diveListNotifier.divesSelected(divesToSelect);
emit diveListNotifier.divesDeselected(divesToDeselect);
bool currentDiveChanged = false;
if (!currentDive) {
@ -105,7 +103,7 @@ bool setSelection(const std::vector<dive *> &selection, dive *currentDive)
}
// return true if selection of current dive changed
return !divesToSelect.empty() || !divesToDeselect.empty() || currentDiveChanged;
return selectionChanged || currentDiveChanged;
}
// Turn current selection into a vector.