Export Historic Database table as Excel Sheet

[marl0rd]

There is a table called Historic inside the Eru Database. This table has status of the tag in a sampling time configured in the Preferences. It is something like this:

Tag1----------Tag2----------Tag3----------Tag4----------Timestamp
1-----------------1---------------2---------------4---------------now-3
1-----------------1---------------2---------------4---------------now-2
1-----------------1---------------2---------------4---------------now-1
1-----------------1---------------2---------------4---------------now

So, the user can obtain tag values saved in the database. It is something like the transaction historic in the account bank.

Before Eru, the App fetch all these data and create a PDF and save it, and that was good; but the experience has shown that exporting an Excel sheet is more handle to the user because he can manipulate it and create trends or whatever.... Like the transactions bank historic.

So, in the process could be:

1. Add a MenuItem in File > Export >
2. When this MenuItem is pressed a new window is shown and could contain preferences to get the historical information.
3. Add a button to save in the user location.

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This is assigned to Mr. Madmartigan. Good luck

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