fix focus effect on up-tree

[DennyDai]

Hi, I found another problem like the problem before.
the same problem still exists in the up-tree row.

before

after

[softvar]

This will throw error if uptree is not defined, which is a valid case

[DennyDai]

Changed already, is that work?

[softvar]

Now the issue is:

This code will remove all the elements having download class, right?
But, as per the above written code, which makes an AJAX call and then do something, which will always be called after this piece of code as it is fetching data from server, async task.

So, what will happen is: once data is fetched, the code will internally executes utils.removePrevInstancesOf('.download'); which in turn will remove the newly added td for uptree.

So, this code breaks up.

Solution is:

Add the below code:

if (uptree && uptree[3]) {
   uptree[3].insertAdjacentHTML('afterend', '<td class="download"></td>');
}

after these lines:

...
data = utils.sortFileStructureAsOnSite(data);

        if (!data) { return; }

        utils.removePrevInstancesOf('.download'); // remove before adding new ones

which will handle it.

Also, please check once before pushing. The procedure is simple and is documented in the README.md.

1. create a branch and then work, don't commit to master directly
2. run npm install once and then gulp watch
3. do your changes, update the extension by clicking on refresh button, after loading it as unpacked - chrome://extensions
4. Verify the changes
5. Push them, happy coding!

[softvar]

Thanks for the patch!