Allow the user to change between the text editor and the hex editor.
Allow the user to change between insert and overwrite mode in both
editors.
This makes it possible to enter any binary data into an empty cell.
Only show the old text edit widget when there is actually a text to be
edited. If the data is a image file show the image instead of some
random garbage. If it is some other binary data show the hex editor.
Store the data of a DB cell in a QByteArray, i.e. a binary data type,
instead of putting it in a QString, thus converting it to a UTF8 string.
Rewrite the reading and writing of DB cells to correctly handle binary
data containing 0x00 bytes.
Change the edit dialog to actually do all the data checks etc. on a
currently invisible QHexEdit widget instead of a QTextEdit.
All these changes combined make it possible to actually store binary
data without it being corrupted. You can for example import pictures
now, export them and actually open the exported file. So this is an
improvement.
There is also a "create table" ast walker which fills
info for the new sqlitetype objects.
A dependency to the antlr2 runtime was added.
The grammar most probably still contain bugs.
Why all this?
First writing grammars is fun and this is the only way
we can get all information for proper table editing + some time
in the future when the grammar is finished we can provide real
auto completion.
Fix the selection of entire columns in the browse tab table view. Even
when selecting multiple columns the data would be re-sorted instead of
selected; this is changed now.
Rewrite some code to use a QTableView widget instead of a QTableWidget
in the browse tab of the main window, or more presicely in the new
extended table widget class. This way the widget and the data model are
separated which on the one hand means a bit more work on our side but on
the other hand also gives us a bit more flexibility. And more
importantly at the moment: This means both, the browse tab and the sql
tab, use a table view now - that's going to be helpful for the next
commit...
removed uninteresting PRAGMA's for user
only set PRAGMA if value has changed
commit transaction before setting pragma with user warning
show the current PRAGMA value after setting
