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/question/behaviour/ -> behaviourbase.php (source)
Defines the question behaviour base class
| Copyright: | 2009 The Open University |
| License: | http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| File Size: | 838 lines (35 kb) |
| Included or required: | 1 time |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
Defines 4 classes
question_behaviour:: (29 methods):
__construct()
get_name()
can_finish_during_attempt()
render()
check_file_access()
get_renderer()
adjust_display_options()
get_applicable_hint()
get_min_fraction()
get_max_fraction()
get_expected_data()
get_expected_qt_data()
get_correct_response()
get_question_summary()
get_right_answer_summary()
get_resume_data()
get_our_resume_data()
classify_response()
get_state_string()
init_first_step()
apply_attempt_state()
is_same_comment()
process_autosave()
process_comment()
format_comment()
summarise_manual_comment()
summarise_start()
summarise_finish()
step_has_a_submitted_response()
question_behaviour_with_save:: (9 methods):
required_question_definition_type()
apply_attempt_state()
is_same_response()
is_complete_response()
process_autosave()
process_save()
summarise_submit()
summarise_save()
summarise_finish()
question_behaviour_with_multiple_tries:: (1 method):
step_has_a_submitted_response()
question_cbm:: (7 methods):
default_certainty()
adjust_fraction()
get_string()
get_short_string()
summary_with_certainty()
optimal_probablility_low()
optimal_probablility_high()
Class: question_behaviour - X-Ref
The base class for question behaviours.A question behaviour is used by the question engine, specifically by
a {@link question_attempt} to manage the flow of actions a student can take
as they work through a question, and later, as a teacher manually grades it.
In turn, the behaviour will delegate certain processing to the
relevant {@link question_definition}.
| __construct(question_attempt $qa, $preferredbehaviour) X-Ref |
| Normally you should not call this constuctor directly. The appropriate behaviour object is created automatically as part of {@link question_attempt::start()}. param: question_attempt $qa the question attempt we will be managing. param: string $preferredbehaviour the type of behaviour that was actually |
| get_name() X-Ref |
return: string the name of this behaviour. For example the name of |
| can_finish_during_attempt() X-Ref |
| Whether the current attempt at this question could be completed just by the student interacting with the question, before $qa->finish() is called. return: boolean whether the attempt can finish naturally. |
| render(question_display_options $options, $number,core_question_renderer $qoutput, qtype_renderer $qtoutput) X-Ref |
| Cause the question to be renderered. This gets the appropriate behaviour renderer using {@link get_renderer()}, and adjusts the display options using {@link adjust_display_options()} and then calls {@link core_question_renderer::question()} to do the work. param: question_display_options $options controls what should and should not be displayed. param: string|null $number the question number to display. param: core_question_renderer $qoutput the question renderer that will coordinate everything. param: qtype_renderer $qtoutput the question type renderer that will be helping. return: string HTML fragment. |
| check_file_access($options, $component, $filearea, $args, $forcedownload) X-Ref |
| Checks whether the users is allow to be served a particular file. param: question_display_options $options the options that control display of the question. param: string $component the name of the component we are serving files for. param: string $filearea the name of the file area. param: array $args the remaining bits of the file path. param: bool $forcedownload whether the user must be forced to download the file. return: bool true if the user can access this file. |
| get_renderer(moodle_page $page) X-Ref |
param: moodle_page $page the page to render for. return: qbehaviour_renderer get the appropriate renderer to use for this model. |
| adjust_display_options(question_display_options $options) X-Ref |
| Make any changes to the display options before a question is rendered, so that it can be displayed in a way that is appropriate for the statue it is currently in. For example, by default, if the question is finished, we ensure that it is only ever displayed read-only. param: question_display_options $options the options to adjust. Just change |
| get_applicable_hint() X-Ref |
| Get the most applicable hint for the question in its current state. return: question_hint the most applicable hint, or null, if none. |
| get_min_fraction() X-Ref |
| What is the minimum fraction that can be scored for this question. Normally this will be based on $this->question->get_min_fraction(), but may be modified in some way by the behaviour. return: number the minimum fraction when this question is attempted under |
| get_max_fraction() X-Ref |
| Return the maximum possible fraction that can be scored for this question. Normally this will be based on $this->question->get_max_fraction(), but may be modified in some way by the behaviour. return: number the maximum fraction when this question is attempted under |
| get_expected_data() X-Ref |
| Return an array of the behaviour variables that could be submitted as part of a question of this type, with their types, so they can be properly cleaned. return: array variable name => PARAM_... constant. |
| get_expected_qt_data() X-Ref |
| Return an array of question type variables for the question in its current state. Normally, if {@link adjust_display_options()} would set {@link question_display_options::$readonly} to true, then this method should return an empty array, otherwise it should return $this->question->get_expected_data(). Thus, there should be little need to override this method. return: array|string variable name => PARAM_... constant, or, as a special case |
| get_correct_response() X-Ref |
| Return an array of any im variables, and the value required to get full marks. return: array variable name => value. |
| get_question_summary() X-Ref |
| Generate a brief, plain-text, summary of this question. This is used by various reports. This should show the particular variant of the question as presented to students. For example, the calculated quetsion type would fill in the particular numbers that were presented to the student. This method will return null if such a summary is not possible, or inappropriate. Normally, this method delegates to {question_definition::get_question_summary()}. return: string|null a plain text summary of this question. |
| get_right_answer_summary() X-Ref |
| Generate a brief, plain-text, summary of the correct answer to this question. This is used by various reports, and can also be useful when testing. This method will return null if such a summary is not possible, or inappropriate. return: string|null a plain text summary of the right answer to this question. |
| get_resume_data() X-Ref |
| Used by {@link start_based_on()} to get the data needed to start a new attempt from the point this attempt has go to. return: array name => value pairs. |
| get_our_resume_data() X-Ref |
| Used by {@link start_based_on()} to get the data needed to start a new attempt from the point this attempt has go to. return: unknown_type |
| classify_response($whichtries = question_attempt::LAST_TRY) X-Ref |
| Classify responses for this question into a number of sub parts and response classes as defined by {@link \question_type::get_possible_responses} for this question type. param: string $whichtries which tries to analyse for response analysis. Will be one of return: (question_classified_response|array)[] If $whichtries is question_attempt::FIRST_TRY or LAST_TRY index is subpartid |
| get_state_string($showcorrectness) X-Ref |
| Generate a brief textual description of the current state of the question, normally displayed under the question number. param: bool $showcorrectness Whether right/partial/wrong states should return: string a brief summary of the current state of the qestion attempt. |
| init_first_step(question_attempt_step $step, $variant) X-Ref |
| Initialise the first step in a question attempt when a new {@link question_attempt} is being started. This method must call $this->question->start_attempt($step, $variant), and may perform additional processing if the behaviour requries it. param: question_attempt_step $step the first step of the param: int $variant which variant of the question to use. |
| apply_attempt_state(question_attempt_step $step) X-Ref |
| When an attempt is started based on a previous attempt (see {@link question_attempt::start_based_on}) this method is called to setup the new attempt. This method must call $this->question->apply_attempt_state($step), and may perform additional processing if the behaviour requries it. param: question_attempt_step The first step of the {@link question_attempt} |
| is_same_comment($pendingstep) X-Ref |
| Checks whether two manual grading actions are the same. That is, whether the comment, and the mark (if given) is the same. param: question_attempt_step $pendingstep contains the new responses. return: bool whether the new response is the same as we already have. |
| process_autosave(question_attempt_pending_step $pendingstep) X-Ref |
| Auto-saved data. By default this does nothing. interesting processing is done in {@link question_behaviour_with_save}. param: question_attempt_pending_step $pendingstep a partially initialised step return: bool either {@link question_attempt::KEEP} or {@link question_attempt::DISCARD} |
| process_comment(question_attempt_pending_step $pendingstep) X-Ref |
| Implementation of processing a manual comment/grade action that should be suitable for most subclasses. param: question_attempt_pending_step $pendingstep a partially initialised step return: bool either {@link question_attempt::KEEP} |
| format_comment($comment = null, $commentformat = null, $context = null) X-Ref |
param: $comment the comment text to format. If omitted, param: $commentformat the format of the comment, one of the FORMAT_... constants. param: $context the quiz context. return: string the comment, ready to be output. |
| summarise_manual_comment($step) X-Ref |
param: question_attempt_step $step return: string a summary of a manual comment action. |
| summarise_start($step) X-Ref |
| No description |
| summarise_finish($step) X-Ref |
| No description |
| step_has_a_submitted_response($step) X-Ref |
| Does this step include a response submitted by a student? This method should return true for any attempt explicitly submitted by a student. The question engine itself will also automatically recognise any last saved response before the attempt is finished, you don't need to return true here for these steps with responses which are not explicitly submitted by the student. param: question_attempt_step $step return: bool is this a step within a question attempt that includes a submitted response by a student. |
Class: question_behaviour_with_save - X-Ref
A subclass of {@link question_behaviour} that implements a saveaction that is suitable for most questions that implement the
{@link question_manually_gradable} interface.
| required_question_definition_type() X-Ref |
| No description |
| apply_attempt_state(question_attempt_step $step) X-Ref |
| No description |
| is_same_response(question_attempt_step $pendingstep) X-Ref |
| Work out whether the response in $pendingstep are significantly different from the last set of responses we have stored. param: question_attempt_step $pendingstep contains the new responses. return: bool whether the new response is the same as we already have. |
| is_complete_response(question_attempt_step $pendingstep) X-Ref |
| Work out whether the response in $pendingstep represent a complete answer to the question. Normally this will call {@link question_manually_gradable::is_complete_response}, but some behaviours, for example the CBM ones, have their own parts to the response. param: question_attempt_step $pendingstep contains the new responses. return: bool whether the new response is complete. |
| process_autosave(question_attempt_pending_step $pendingstep) X-Ref |
| No description |
| process_save(question_attempt_pending_step $pendingstep) X-Ref |
| Implementation of processing a save action that should be suitable for most subclasses. param: question_attempt_pending_step $pendingstep a partially initialised step return: bool either {@link question_attempt::KEEP} or {@link question_attempt::DISCARD} |
| summarise_submit(question_attempt_step $step) X-Ref |
| No description |
| summarise_save(question_attempt_step $step) X-Ref |
| No description |
| summarise_finish($step) X-Ref |
| No description |
Class: question_behaviour_with_multiple_tries - X-Ref
| step_has_a_submitted_response($step) X-Ref |
| No description |
Class: question_cbm - X-Ref
This helper class contains the constants and methods required formanipulating scores for certainty based marking.
| default_certainty() X-Ref |
return: int the default certaintly level that should be assuemd if |
| adjust_fraction($fraction, $certainty) X-Ref |
| Given a fraction, and a certainty, compute the adjusted fraction. param: number $fraction the raw fraction for this question. param: int $certainty one of the certainty level constants. return: number the adjusted fraction taking the certainty into account. |
| get_string($certainty) X-Ref |
param: int $certainty one of the LOW/MED/HIGH constants. return: string a textual description of this certainty. |
| get_short_string($certainty) X-Ref |
param: int $certainty one of the LOW/MED/HIGH constants. return: string a short textual description of this certainty. |
| summary_with_certainty($summary, $certainty) X-Ref |
| Add information about certainty to a response summary. param: string $summary the response summary. param: int $certainty the level of certainty to add. return: string the summary with information about the certainty added. |
| optimal_probablility_low($certainty) X-Ref |
param: int $certainty one of the LOW/MED/HIGH constants. return: float the lower limit of the optimal probability range for this certainty. |
| optimal_probablility_high($certainty) X-Ref |
param: int $certainty one of the LOW/MED/HIGH constants. return: float the upper limit of the optimal probability range for this certainty. |
