In C++ code, `DataTransfer::GetTypes()` are used for checking whether the
`DataTransfer` instance has specific type `DataTransferItem` or not. Therefore,
it does not make sense to retrieve all item types nor compare some types
looking for with the retrieved item types.
This patch adds `DataTransfer::HasType()` and `DataTransfer::HasFile()` for
the current C++ users. They don't take `CallerType` since all C++ users use
`GetTypes()` as `CallertType::System`. And they just call a corresponding
method of `DataTransferItemList`.
Then, `DataTransferItemList` methods compares given type with every items
simply.
Note that this patch moves `DataTransfer::GetTypes()` to `DataTransferItemList`
too because new methods and `GetTypes()` should be maintained at every logic
changes.
The reason why there is no `DataTransfer::HasAnyOfTypes()` method is,
`DataTransfer.h` cannot include `DataTransferItemList.h` due to their
dependency but parameter pack requires inline methods.
Differential Revision: https://phabricator.services.mozilla.com/D60387
--HG--
extra : moz-landing-system : lando
DataTransfer should have more 2 constructors. One takes |const nsAString&| and
sets its data to the string. The other takes |nsITransferable*| and stores only
its data with DataTransferItem.
If given data is external resource like the case of `HTMLEditor::PasteTransferable()`,
we should copy its data to each DataTransferItem because nsITransferable is not
cycle-collectable, but DataTransfer may be grabbed by JS. Unfortunately, adding
new path to initialize DataTransfer with nsITransferable instance is too risky
because DataTransfer and DataTransferItem work together to initialize each of
them if DataTransfer is in external mode. Therefore, this patch makes the
new constructor temporarily sets it to in external mode, then, cache usable types
first, then, call `FillAllExternalData()` to make each DataTransferItem initializes
its data by itself, finally, make the constructor set it to internal mode and release
nsITransferable instance. This is ugly implementation but the most reasonable
way for now because:
- We don't need to change DataTransfer nor DataTransferItem a lot in this bug.
- We don't need to duplicate any code like a loop in `CacheExternalData()`.
In another bug, we should redesign DataTransfer and DataTransferItem to
make DataTransferable easier to be added new constructors.
Differential Revision: https://phabricator.services.mozilla.com/D19298
--HG--
extra : moz-landing-system : lando
This was automatically generated by the script modeline.py.
MozReview-Commit-ID: BgulzkGteAL
--HG--
extra : rebase_source : a4b9d16a4c06c4e85d7d85f485221b1e4ebdfede
The idea is to not make consumers think about whether the principal exists or
not when the caller knows for sure that it does.
The substantive changes are in dom/bindings, nsHTMLDocument::SetDesignMode, and
around the CanUseStorage bits. Everything else is pretty mechanical.
Simon Giesecke
Masayuki Nakano
Sylvestre Ledru
Andrew McCreight
Boris Zbarsky
Andrea Marchesini
Michael Layzell
Carsten "Tomcat" Book