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Undo: use QUndoStack::isClean() to determine unsaved changes

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Properly implement the unsaved-changes flag(s). Since we currently have
two kinds of changes, there are two flags:
1) dive_list_changed in divelist.c marks non-undoable changes. This flag
   is only cleared on save or load.
2) QUndoStack::isClean() is used to determine the state of undoable
   changes. Every time the user returns to the state where they saved,
   this flag is cleared.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-03-30 18:39:27 +01:00 • committed by Dirk Hohndel
parent 837ab6c90b
commit 58f2e5f77c
9 changed files with 46 additions and 31 deletions
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4
desktop-widgets/command_edit.cpp
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@ -92,8 +92,6 @@ void EditBase<T>::undo()
if (setSelection(selectedDives, current))
emit diveListNotifier.selectionChanged(); // If the selection changed -> tell the frontend
mark_divelist_changed(true);
}
// We have to manually instantiate the constructors of the EditBase class,
@ -509,8 +507,6 @@ void EditTagsBase::undo()
if (setSelection(selectedDives, current))
emit diveListNotifier.selectionChanged(); // If the selection changed -> tell the frontend
mark_divelist_changed(true);
}
// Undo and redo do the same as just the stored value is exchanged