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set return_url via ::xo::cc to avoid "connection socket is detached" error

Do not abort after the redirect, or the rest of the workflow logic after this action won't fire

Fixes xowf.create_test_items automated test

use message key

Added improved support for viewing and downloading of exam results

When results are available, "Points and Grades" can be used.

Results are available,

- for autocorrected questions, when the exam protocol was rendered, or

- for all types of questions, when lecturers have added manual gradings/comments.

Depending on whether a grading scheme was defined for the exam,

it is possible to view/download grades and grade statistics, or to these

just with points. It is also possible to get the total results per student

(including grades) or results per question.

The results are available

- in tabular form, with the ability to sort on the columns,

- as charts, and

- as csv-files (for loading into spreadsheets).

The version number was bumped to 5.10.1d50

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fix escaped line

logout action of inclass-exam-answer: perform a redirect to a return_url when provided

Fix for updating the time window via configuration dialog

In cases, where no student submissions exists, updating the time

window via the configuration dialog was ignored.

Many thanks to Thomas Renner for finding the cause and providing a fix.

Handling of cases where exercises with 0 minutes (or empty minutes fields) are used,

or when the full exam has no minutes specifed

- Provide a hint on lecturers dashboard for questions with 0 minutes

- Don't provide timer on the lecturers dashboard

- Don't provide timer for the students

- Don't show timer for very short exams/quizzes (below 1 minute)

- Provide a hint on lecturers dashboard when no timer is displayed

- When the countdown timer has expired more than a minute, display the text

that the timer has expired, rather than counting to negative values.

Hints:

* It is recommended to set the end-time of the exam manually,

when a time window is specified and the total exam time is provided as 0.

* When there is no timer, the special autosaving semantics for the end of the exam

will not work (trying to get a snapshort short before the exam end).

* When there is no time-budget, the time budget control ("be able" exams) won't work

- bumping version to 5.10.1d47

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avoid UTF-8 middot that apprarently does not work everywhere

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fix potential loss of statistics for autograded exams

when filtering by form objects (i.e. single question)

omit the grading table and therefore as well overwriting

of the statistics with partial values. Previously, only

the values of the show questions were displayed, until

the full exam protocol was rendered again

replace ASCII middot by proper UTF8 middot, since the ASCII middot is no valid UTF-8

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Styling improvements for exam answering workflows (many thanks to Monika Andergassen)

- provide explicit text to "next" and "previous" buttons in pagination menu

- align appearance of "next" and "previous" buttons in pagination menu with GitHub

- removed class "input-group" for compound fields to improve appearance

- bumped version number of xowf to 5.10.1d48

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Give admins the possibility to deactivate pagination actions in the answer workflow of the inclass exam.

As default the pagination actions are shown in the answer workflow.

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fix links of last commit

improve support of inclass exam for bootstrap 5

add missing curly brackets

Provide localization for hardcoded text

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use csv icon, revert deterioration of appearance

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Port of downstream visual behavior: prefer a 3-columns layout when space is available

adaoption for bootstrap5

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Perform stricter checking of parent_ids

bump version number of xowf to 5.10.1d34

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Support for extra extra hints texts (feedback, correction hints)

The updated version of the inclass-exam supports now extra hint texts for lecturers and students. These extra information is displayed after the question, and is used either for feedback to the student (e.g. Einsicht) or as information for the grader (evaluation guidelines, esp. useful when multiple graders are involved). It can be controlled via setup what kind of information the question author can provide. The providable feedback is controlled via the feedback level:

Feedback level

- The feedback level can be

* "full": two input fields for feedback for correct and incorrect answers

* "single": single input fields for feedback

* "none": no input field for feedback.

- The feedback level is specified in the forms used in the

pull down menus for creating "New" test items.

- The feedback level is applicable to all test item types

(SC, MC, Text, ShortText, Ordering, Upload, Composite, Pool)

- The predefined setup is as follows:

"single" is used for all item type, except for "Pool" questions (since the feedback

is taken from the replacement question from the Pool)

- Nothing has change here

Correction notes:

- optionally, correction notes can be specified.

Since in the past, the general feedback was not shown to the students,

it was sometimes abused for correction hints for the lecturer.

Therefore, we have now a separate field

- Correction notes can be added to all item types

(SC, MC, Text, ShortText, Ordering, Upload, Composite, Pool) and are

turned on by default (except for Pool).

Visibility of general feedback and correction notes

- general feedback is shown (when provided)

* full exam-protocol is shown

* filtering single question

* filtering single submission (view with revision selection)

* exam-review for students (Einsicht)

- corrections notes are shown (when provided)

* full exam-protocol is shown

* filtering single question

* filtering single submission (view with revision selection)

- when general feedback is not provided, the exam protocol etc. looks as before

- when correction notes are not provided, the exam protocol etc. looks as before

- Negative feedback is provided,

* when percentage is known, and

* percentage is < 50%

- when negative feedback is displayed, the positive feedback is not displayed and vice versa

For composite questions, the system supports hint texts for the full composite question and additional ones for every single part.

Version number bumped to 5.10.1d32

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Added support for restricting access to exams based on IP addresses.

In order to avoid the problem that students might participate on exams

intended to be held e.g. on campus from at home, one can now restrict

the access based on IP ranges. It is possible to restrict the access

via multiple range blocks that can be predefined by the sysadmins. One

could predefine e.g. IP range blocks for "Campus LAN", "On Site",

"VPN", etc., which can be selected by lecturers for individual exams.

Every IP range block can be defined via multiple entries of disallowed

and allowed IP ranges, where the addresses can be specified via IPv4

or IPv6 CIDR blocks (e.g. 127.208.0.0/16), or with wild cards or

individual IP addresses. The usage of CIDR blocks requires an update

to the updated version of NaviServer.

The IP restriction is used in the current implementation for

restricting the regular start of the exam (proctored or

non-proctored). Lecturers can still perform test runs for exams with

restricted access.

Bump version number to 5.10.1d31

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Added support for www-toggle-publish-status

This is needed to avoid a bad interaction with [ad_return_url] as it

is used in www-toggle-publish-status in xowiki, since the workflow

definition unsets the actual return_url, which causes ad_return_url to

use the URL leading to this call (m=toggle-publish-status), causing a

redirection loop.

Version number bumped to 5.10.1d28

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make parameter name more self-expanatory to avoid misinterpretations

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user forwarder for answer manager AM similar to the question manager QM

Store statistics in a separate page instead of the workflow itself

- advantages:

* smaller workflow instance

- no danger that page is too large for caching, even for large exams.

- smaller objects mean also better performance

* modification date in exam is not modified when statistics

are updated

* easier extensible

- New function WorkflowPage->childpage

easy to use interface for creating child pages

- render_submission=exam_protocol: changed name of

parameter "-form_objs" to "-filter_form_ids", since

form_objs are used typically to keep objects, not ids

- Still to do: policy for inclass-exam-statistics.wf

- Bumped version number to 5.10.1d25

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do not allow to edit unresolve links during the exam, but allow this in the preview mode

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streamline substitution handling

Perform same substitutions as in other test-item workflows.

use the forwarder as a forwarder...