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add minutes string to exam protocol

add support for multi-line entries in short_text answers

minor refactoring to general handling of printing minutes per question

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inclass-quizz: support as well participants, which are not logged-in

improve internationalization

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more polishing of message keys and code

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improve responsiveness

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make URL hacking less enjoyable

remove dead code

fix typo in comment

fix typo

verworked test-item procs:

- new teacher-paced inclass quiz

- support for different shuffling options (never, always, per-user)

- support for subsections (single and multiple choice, short text questsion)

- support for answer hints for short text questions (single word, multiple words, ...)

- new API for question and answers for student-paced and

teacher-paced scenarios using on the following objects

* renaming_form_loader

- answer_attributes

- answer_for_form

- answers_for_form

- form_name_based_attribute_stem

- get_form_object

- rename_attributes

* question_manager

- goto_page

- more_ahead

- current_question_form

- current_question_obj

- current_question_name

- current_question_title

- nth_question_obj

- nth_question_form

- combined_question_form

- question_objs

- question_names

- question_property

* answer_manager

- create_workflow

- delete_all_answer_data

- get_answer_wf

- get_wf_instances

- get_answers

- marked_results

- answers_panel

- special policies for workflows, defined as per-workflow policies.

- improved i18n

- improved styling

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file inclass-quiz-answer.wf was initially added on branch oacs-5-10.

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file inclass-quiz.wf was initially added on branch oacs-5-10.

add fingerprinting to results

- form-generator.css: based on former myform.css, substantially revamped

(to be used together with form field classes in test-item-procs)

- test-item classes:

* feedback_level extended to "full", "single", or "none"

middle is new for a single feedback per item

* shuffling support with 3 modes ("none", "peruser", "always").

can be used for shuffling MC questions and text_entry questions (short-text),

and in future for all "enumeration" based question types.

* new question type "mc2", shuffling multiple choice question,

fully stylable via CSS (old question type "mc" can still be used for the

time being)

* ease styling for all test-item types by added explicit wrappers

* factor out "renaming_form_loader" from online-exam*.wf (including

support methods)

- online-exam*.wf:

* fix broken behavior with shared workflow definitions when closing/opening

exams and student tried interactions. Previous code did dynamic changes in

the shared definition (probably more to come).

* used factored out renaming_form_loader

* cleanup of old code

- removed low-level rewriting of <textarea>, <input> fields, etc.

- removed dead code

- removed hard-coded stylings

- bumb version number to 5.10.0d10

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factor out CSS for test-items:

new file: /resources/xowf/test-item.css

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deactivate html hacking (replace textarea by "p") since rendering is

broken due to bootstrap's "form-control" class

ensure that every formfield is disabled in the disabled_fc list (e.g. mc-interaction)

fix workflow such these work as well with shared workflow definitons

- overhaul of online-exam:

- support for new question types

* text_interaction

* text_entry_interaction

* mc interacotpm

- support for autocorrection feedback in print-out (first version)

based on "correct_when" (this is per tield-type, also extensible)

currently 9 types of predicates, "btwn" (heißt "zwischen"),

eq, ne, gt, ge, lt, le, match, in

- fully internationlaized

- todo:

* better support for mc,

* submission certificates for students (comtaining a digest)

* percentage grading

* export for potential post-processing of results

* improved styling

improve spelling

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modernize code: use resolver variables rather than method calls

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update default value of ip address for each instance individually

fix item_ref for backward compatibility

improve spelling

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added print-answers to the externally callable methods

Fix typo

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rework online-exam.wf and online-exam-answer.wf to support shared workflow definition

Add Feature: Shared Workflow Definitions

Background: so far, xowf stored workflow definitions in the workflow

context, which is generated for every instantiated workflow instance

due to the needs of the State Pattern. While the old approach works

perfectly fine, when pre request only one or a few workflow instances

are created, but is inefficient, when e.g. 100 or more instances of

the workflow definition are created.

Now, the instances can share the definition, which is shared based on

the revision_id of the workflow FormPage.

OLD: obj <-> obj::wf_ctx

NEW: obj <-> obj::wf_ctx <(n)----> wf_definition

OLD scenario:

- the wf_definition was part of the context (no distinction)

- navigation from wf_ctx (and wf_definition) to object was possible

via "info parent"

NEW scenario:

- the wf_definition is separate

- one wf_definition can be used for multiple wf_ctx

- new methods are required instead of "info parent"

to navigate between these cooperating objects

* xowf::WorkflowPage.wf_context

* xowf::WorkflowConstruct.wf_context

* xowf::Context.wf_container

The navigation from a WorkflowConstruct (e.g. State) to the wf_ctx

is slow and fragile if not following usual programming conventions

and should e avoided (the methods of these constructs have the obj

passed in, so this path should not be necessary in most situations)

- as long the contents of the wf_container is constant, it can be

shared in the per-thread cache.

For now, the new feature is turned off by default via variable

::xowf::sharedWorkflowDefinition, but this will change in the future.

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- improve safety of HTML

- whitespace changes

initial check-in

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  1. … 16 more files in changeset.