Resolves #240

[angsch]

Add two more export options, 'export selection to individual files' requested in #240 and 'export all pages to individual files'.

[Nokia808]

@angsch
Thank you for this PR !
Only one note: with "export to individual files" options, the output files should be without the outlines (TOC) that may some time already existing in original (input) PDF. For example, if I have a PDF has outlines (TOC) for it's 17 chapters & their sub-chapters, it will be meaningless if each of extracted individual files (that each of them represent a single page of original PDF) has TOC of original file.

I'm nearly sure you are already addressed this, but since I'm not programmer I give this note to avoid post implementation fix ....

Best regards.

[kbengs]

Some observations when I tested it:

• When starting this is printed to terminal: "SyntaxWarning: "is" with a literal. Did you mean "=="? if exportmode is 'ALL_TO_SINGLE':"
• Mnemonics accelerators are missing in menu.ui (Keyboard shortcuts, Alt + X) Could be for example "Export Specia_l…"
• "export selection" and "save as" are always greyed-out in hamburger menu (or am I missing something?)
• Export options are only available in right-click menu, shouldn't they be in hamburger menu also?

But overall I think it looks good.

[angsch]

@kbengs
Thanks for testing. It is really good that you point of the thing with the hamburger menu. I am gonna fix your points. Thanks, again.

[jeromerobert]

Thank you @angsch. You PR looks good. Here is what I would add to kbengs comments:

• I think "Export selection" is already something "special". So I would prefer that you rename "Export Special..." to "Export..." and move "Export Selection" to it.
• I also think that the new export submenu should be in the hamburger menu.
• Could you also rebase your branch to master and remove the merge commit ?

[angsch]

The code has been revised according to your comments. I think it is ready for being merged.

[kbengs]

Two small things I still notice:

• You probably forgot to remove the line: "attribute name="target" type="i">0</attribute" from the "save as" section in menu.ui
  because save as in hamburger menu is still always greyed-out
• Empty line in menu.ui line 320

[kbengs]

CTRL+F is usually shortcut for find, maybe something else should be used here?

[jeromerobert]

I merge it, we'll fix that kind of details.

[jeromerobert]

56b3150