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Project Fission/BrowsingContext: Difference between revisions
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Add a note about DidSet.
(Add notes on SetWithoutSyncing and Transaction::Commit) |
(Add a note about DidSet.) |
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| Line 48: | Line 48: | ||
field. <syntaxhighlight lang="C++" inline>CanSet</syntaxhighlight> takes three arguments: | field. <syntaxhighlight lang="C++" inline>CanSet</syntaxhighlight> takes three arguments: | ||
# The | # The field index that names it (for overloading) | ||
# The value being set | # The value being set | ||
# the <syntaxhighlight lang="C++" inline>ContentParent</syntaxhighlight> that changed the value | # the <syntaxhighlight lang="C++" inline>ContentParent</syntaxhighlight> that changed the value | ||
Finally, there will also be field setter callbacks available as <syntaxhighlight lang="C++" inline>DidSet</syntaxhighlight> methods. <syntaxhighlight lang="C++" inline>DidSet</syntaxhighlight> is supposed to be overridden, and can either take only the field index that names it, or the field index and the previous value. | |||
Here, 3 will only be non-null if in the parent process, and if the field | Here, 3 will only be non-null if in the parent process, and if the field | ||