Debug errors were not shown anywhere in the GUI, they were just
ignored. This commit adds new signal for those debug errors and
directs them to checking log.
Solves ticket #1898 (GUI: Handle internal errors from lib)
This commit modifies and registers ErrorItem as proper metatype so it
can be used with Qt signals. Then sending Error-signals is refactored
so that ErrorItem instances are sent instead of several different
arguments that already contained couple of lists.
Progress signal had also item count with it and then the handler determined
that check is ready when max count of progress was done. Also progressbar
was practically reset in every progress signal. This was simply fragile
code.
After this patch progress signal has only the current progress count. Total
count of items is given when initializing the checking. And there is
separate function for handling check finishing.
This also fixes the bug that progressbar was not hidden after checking
or when interrupting the checking.
One for when user tries to double click and there are now applications specified.
Another for when user tries to check something and the file list is empty.
Items are now hidden from the tree and the tree is not recreated everytime it is refreshed.
Also added test.cpp as a sample data for GUI testing.
Added Check all and uncheck all buttons to menu to show/hide all errors more easily.