Although the text must be empty for the mode to change to plain text
mode, there still may be a non-default style for the temporary insert
style and style for the end of text run.
ME_SplitRun is only called by wrapping code. In all but one call the
returned second half of the split run will be returned, get passed back
to ME_WrapHandleRun, then ME_CalcRunExtent will be called at the start of
ME_WrapHandleRun through ME_WrapSizeRun.
There are unsupported flags documented on MSDN which would cause problems
for the equality checks used in EM_SETCHARFORMAT. Also, to handle a
combined set of flags they must be checked for in the right order.
The first paragraph was being handled just by ME_StreamOutParaProps,
but subsequent paragraphs would check if the paragraph was starting or
ending a table. So I moved the code to check for tables into
ME_StreamOutParaProps.
This is a regression caused by commit
54b53b6018 which change the code to use
if statements instead of a switch, so the break statement should have
been changed to a continue statement.
ME_InsertTextFromCursor could previously follow the ME_CommitUndo call
leaving uncommitted changes which would cause improper grouping of commits,
or an assertion failure.
The call to ME_SendSelChange cannot be done in ME_CommitUndo like it was
before, because it must be done after wrapping. Native richedit controls
send EN_CHANGE first, which is sent in ME_UpdateRepaint, so
ME_SendSelChange must be before this notification in ME_UpdateRepaint.
Revert commit 049cf5aca0
richedit: Avoid notifying parent window in improper state.
The commit was meant to fix a problem caused by ME_SendSelChange being
called in ME_SendSelChange, but moving the calls to ME_CommitUndo caused
a regression. So this patch reverts the previous commit, and my
following patch will instead fix the bug by moving the call to
ME_SendSelChange out of ME_CommitUndo.
ME_CommitUndo and ME_CommitCoalescingUndo call ME_SendSelChange, which
may notify the parent window that the selection has changed, therefore
should generally be called after wrapping the text. Otherwise, the parent
window may send a message to the editor and cause an assertion failure.
Michael Stefaniuc