Kohei Yoshida schrieb:
Hi all,
So, <worksheet> element has a child element called <sheetViews>, which
contains a group of <sheetView> elements. It contains view data such as
the cursor position, active sheet etc.
Here is a problem with importing these view settings. For us to set such
view data, we have to gain access to the current controller, which is
not available at time of file import. It appears to be set after the
import is complete. This may be reasonable since a file typically gets
loaded before the corresponding application frame gets shown.
I have also looked into getting a XViewDataSupplier instance from the
model since there is a model instance during import, but so far no luck.
I have not looked far enough into this, but my gut feeling is that, the
view data needs to be set before we can query for its instance, which it
is not during import (correctly me if I'm wrong).
Now, since we need to keep our design of the oox::xls code reasonably
close to the design of the existing Excel binary filter, it's probably
logical to do something similar to what the binary filter currently does
for the view settings.
I've discovered that the binary filter creates an instance of
ScExtTabSettings for each sheet to temporarily store view settings of
their respective sheet during import, and use ScExtTabSettingsCont as a
container and ScExtDocOptions to control the life cycle of those
ScExtTabSettings instances. Once the import is complete, the filter
calls PostDocLoad() to commit the view settings collected during import.
I could see us doing something similar for SpreadsheetML import. We
would still need to work out a way to do equivalent of PostDocLoad(),
but at least for now, we could create view setting container classes to
start collecting view data during import.
Yes, these container structs can be designed very similar to the
existing structs in the core. Don't know if we want to stick to the
existing approach of creating a sequence property values and passing it
to the view settings interface.
Btw, an existing equivalent of PostDocLoad() is
WorkbookFragment::endDocument().
Daniel
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