Paging support for fetchers #5507

[Ajitaganguly3]

Description

Fixes #5507
This pull request adds a next button, a previous button and pagination for the Fetchers.

Changes Made

• Added new classes WebImportEntriesDialog, and, WebImportViewModel that adds the previous button, next button and pagination.
• Added the disable feature to the Previous button. The previous button will be disabled at first.
• Implemented the logic so that the Fetcher only shows 20 data per page
• Added WebImportEntriesDialog.FXML file which shows the buttons and the pagination

[koppor]

I tried it out with "ArXiv". The "Next" button does not work:

Expected: When clicking on "Next", items 21..40 are fetched.

When searching in the web for "test", there are more than 160.000 entries.

https://arxiv.org/search/?query=test&searchtype=all&source=header

[Ajitaganguly3]

Thank you @koppor for providing insight on this. I'll try to make the necessary modifications on the code so that it works fine with all the Fetchers.

[koppor]

Take this as exercise for agile development with feedback loops. Typically, customers don't know what they exactly want at the beginning. It will come to light while presenting intermediate results.

BTW: I like the idea that Next also works with non-paged fetchers. Maybe the dialogs can be unified again so that the same dialog can be used for page based and non-page based fetchers.

[koppor]

Closing this issue due to inactivity 💤

Please ping us if you intend to resume work on this one.