Salt and multiple molecules

[lpatiny]

Currently there is no way to draw a salt and this is quite annoying. People should take care to draw many molecules if needed.

We have different scenario:

• we draw a molecule.
• we paste a smiles or a molfile
• we paste a list containing smiles
• we drag / drop one or many molfile(s)
• we drag / drop one or many sdf file(s)

When drawing a molecule

[lpatiny]

1. We draw a molecule such as

After validation we should have only one molecule compose of 2 parts.

2. We paste a smiles like CCC.CC

We should have only one molecule composed of 2 parts

3. We paste or drag / drop a file like 'test.smiles'

CCC.O
CCCC.S
CCCCC.N

The should obtain 3 molecules containing each 2 aprts

3. We paste a molfile or drag / drop 'test.mol' containing 2 parts

first line
second line
third line
  2  0  0  0  0  0  0  0  0  0999 V2000
   -2.5208   -0.1432    0.0000 Na  0  3  0  0  0  0  0  0  0  0  0  0
    2.5208    0.1432    0.0000 Cl  0  5  0  0  0  0  0  0  0  0  0  0
M  CHG  2   1   1   2  -1
M  END

We should have only one molecule compose of 2 parts

5. We paste a SDF file or drag / drop a file like test.sdf

first line
second line
third line
  2  0  0  0  0  0  0  0  0  0999 V2000
   -2.5208   -0.1432    0.0000 Na  0  3  0  0  0  0  0  0  0  0  0  0
    2.5208    0.1432    0.0000 Cl  0  5  0  0  0  0  0  0  0  0  0  0
M  CHG  2   1   1   2  -1
M  END
$$$$
first line
second line
third line
  2  0  0  0  0  0  0  0  0  0999 V2000
   -2.5208   -0.1432    0.0000 K   0  3  0  0  0  0  0  0  0  0  0  0
    2.5208    0.1432    0.0000 Br  0  5  0  0  0  0  0  0  0  0  0  0
M  CHG  2   1   1   2  -1
M  END
$$$$

We should only have 2 molecules each composed of 2 parts.

Ideally we should have Playwright in order to test those different scenario.