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/**
* Grader report namespace
*/
M.gradereport_grader = {
/**
* @namespace M.gradereport_grader
* @param {Object} reports A collection of classes used by the grader report module
*/
classes : {},
/**
* Instantiates a new grader report
*
* @function
* @param {YUI} Y
* @param {Object} cfg A configuration object
* @param {Array} An array of items in the report
* @param {Array} An array of users on the report
* @param {Array} An array of feedback objects
* @param {Array} An array of student grades
*/
init_report : function(Y, cfg, items, users, feedback, grades) {
// Create the actual report
new this.classes.report(Y, cfg, items, users, feedback, grades);
}
};
/**
* Initialises the JavaScript for the gradebook grader report
*
* The functions fall into 3 groups:
* M.gradereport_grader.classes.ajax Used when editing is off and fields are dynamically added and removed
* M.gradereport_grader.classes.existingfield Used when editing is on meaning all fields are already displayed
* M.gradereport_grader.classes.report Common to both of the above
*
* @class report
* @constructor
* @this {M.gradereport_grader}
* @param {YUI} Y
* @param {Object} cfg Configuration variables
* @param {Array} items An array containing grade items
* @param {Array} users An array containing user information
* @param {Array} feedback An array containing feedback information
*/
M.gradereport_grader.classes.report = function(Y, cfg, items, users, feedback, grades) {
this.Y = Y;
this.isediting = (cfg.isediting);
this.ajaxenabled = (cfg.ajaxenabled);
this.items = items;
this.users = users;
this.feedback = feedback;
this.table = Y.one('#user-grades');
this.grades = grades;
// If ajax is enabled then initialise the ajax component
if (this.ajaxenabled) {
this.ajax = new M.gradereport_grader.classes.ajax(this, cfg);
}
};
/**
* Extend the report class with the following methods and properties
*/
M.gradereport_grader.classes.report.prototype.table = null; // YUI Node for the reports main table
M.gradereport_grader.classes.report.prototype.items = []; // Array containing grade items
M.gradereport_grader.classes.report.prototype.users = []; // Array containing user information
M.gradereport_grader.classes.report.prototype.feedback = []; // Array containing feedback items
M.gradereport_grader.classes.report.prototype.ajaxenabled = false; // True is AJAX is enabled for the report
M.gradereport_grader.classes.report.prototype.ajax = null; // An instance of the ajax class or null
/**
* Builds an object containing information at the relevant cell given either
* the cell to get information for or an array containing userid and itemid
*
* @function
* @this {M.gradereport_grader}
* @param {Y.Node|Array} arg Either a YUI Node instance or an array containing
* the userid and itemid to reference
* @return {Object}
*/
M.gradereport_grader.classes.report.prototype.get_cell_info = function(arg) {
var userid= null;
var itemid = null;
var feedback = ''; // Don't default feedback to null or string comparisons become error prone
var cell = null;
var i = null;
if (arg instanceof this.Y.Node) {
if (arg.get('nodeName').toUpperCase() !== 'TD') {
arg = arg.ancestor('td.cell');
}
var regexp = /^u(\d+)i(\d+)$/;
var parts = regexp.exec(arg.getAttribute('id'));
userid = parts[1];
itemid = parts[2];
cell = arg;
} else {
userid = arg[0];
itemid = arg[1];
cell = this.Y.one('#u'+userid+'i'+itemid);
}
if (!cell) {
return null;
}
for (i in this.feedback) {
if (this.feedback[i] && this.feedback[i].user == userid && this.feedback[i].item == itemid) {
feedback = this.feedback[i].content;
break;
}
}
return {
id : cell.getAttribute('id'),
userid : userid,
username : this.users[userid],
itemid : itemid,
itemname : this.items[itemid].name,
itemtype : this.items[itemid].type,
itemscale : this.items[itemid].scale,
itemdp : this.items[itemid].decimals,
feedback : feedback,
cell : cell
};
};
/**
* Updates or creates the feedback JS structure for the given user/item
*
* @function
* @this {M.gradereport_grader}
* @param {Int} userid
* @param {Int} itemid
* @param {String} newfeedback
* @return {Bool}
*/
M.gradereport_grader.classes.report.prototype.update_feedback = function(userid, itemid, newfeedback) {
for (var i in this.feedback) {
if (this.feedback[i].user == userid && this.feedback[i].item == itemid) {
this.feedback[i].content = newfeedback;
return true;
}
}
this.feedback.push({user:userid,item:itemid,content:newfeedback});
return true;
};
/**
* Initialises the AJAX component of this report
* @class ajax
* @constructor
* @this {M.gradereport_grader.ajax}
* @param {M.gradereport_grader.classes.report} report
* @param {Object} cfg
*/
M.gradereport_grader.classes.ajax = function(report, cfg) {
this.report = report;
this.courseid = cfg.courseid || null;
this.feedbacktrunclength = cfg.feedbacktrunclength || null;
this.studentsperpage = cfg.studentsperpage || null;
this.showquickfeedback = cfg.showquickfeedback || false;
this.scales = cfg.scales || null;
this.existingfields = [];
if (!report.isediting) {
report.table.all('.clickable').on('click', this.make_editable, this);
} else {
for (var userid in report.users) {
if (!this.existingfields[userid]) {
this.existingfields[userid] = [];
}
for (var itemid in report.items) {
this.existingfields[userid][itemid] = new M.gradereport_grader.classes.existingfield(this, userid, itemid);
}
}
// Disable the Update button as we're saving using ajax.
submitbutton = this.report.Y.one('#gradersubmit');
submitbutton.set('disabled', true);
}
};
/**
* Extend the ajax class with the following methods and properties
*/
M.gradereport_grader.classes.ajax.prototype.report = null; // A reference to the report class this object will use
M.gradereport_grader.classes.ajax.prototype.courseid = null; // The id for the course being viewed
M.gradereport_grader.classes.ajax.prototype.feedbacktrunclength = null; // The length to truncate feedback to
M.gradereport_grader.classes.ajax.prototype.studentsperpage = null; // The number of students shown per page
M.gradereport_grader.classes.ajax.prototype.showquickfeedback = null; // True if feedback editing should be shown
M.gradereport_grader.classes.ajax.prototype.current = null; // The field being currently editing
M.gradereport_grader.classes.ajax.prototype.pendingsubmissions = []; // Array containing pending IO transactions
M.gradereport_grader.classes.ajax.prototype.scales = []; // An array of scales used in this report
/**
* Makes a cell editable
* @function
* @this {M.gradereport_grader.classes.ajax}
*/
M.gradereport_grader.classes.ajax.prototype.make_editable = function(e) {
var node = e;
if (e.halt) {
e.halt();
node = e.target;
}
if (node.get('nodeName').toUpperCase() !== 'TD') {
node = node.ancestor('td');
}
this.report.Y.detach('click', this.make_editable, node);
if (this.current) {
// Current is already set!
this.process_editable_field(node);
return;
}
// Sort out the field type
var fieldtype = 'value';
if (node.hasClass('grade_type_scale')) {
fieldtype = 'scale';
} else if (node.hasClass('grade_type_text')) {
fieldtype = 'text';
}
// Create the appropriate field widget
switch (fieldtype) {
case 'scale':
this.current = new M.gradereport_grader.classes.scalefield(this.report, node);
break;
case 'text':
this.current = new M.gradereport_grader.classes.feedbackfield(this.report, node);
break;
default:
this.current = new M.gradereport_grader.classes.textfield(this.report, node);
break;
}
this.current.replace().attach_key_events();
// Fire the global resized event for the gradereport_grader to update the table row/column sizes.
Y.Global.fire('moodle-gradereport_grader:resized');
};
/**
* Callback function for the user pressing the enter key on an editable field
*
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Event} e
*/
M.gradereport_grader.classes.ajax.prototype.keypress_enter = function(e) {
this.process_editable_field(null);
};
/**
* Callback function for the user pressing Tab or Shift+Tab
*
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Event} e
* @param {Bool} ignoreshift If true and shift is pressed then don't exec
*/
M.gradereport_grader.classes.ajax.prototype.keypress_tab = function(e, ignoreshift) {
e.preventDefault();
var next = null;
if (e.shiftKey) {
if (ignoreshift) {
return;
}
next = this.get_above_cell();
} else {
next = this.get_below_cell();
}
this.process_editable_field(next);
};
/**
* Callback function for the user pressing an CTRL + an arrow key
*
* @function
* @this {M.gradereport_grader.classes.ajax}
*/
M.gradereport_grader.classes.ajax.prototype.keypress_arrows = function(e) {
e.preventDefault();
var next = null;
switch (e.keyCode) {
case 37: // Left
next = this.get_prev_cell();
break;
case 38: // Up
next = this.get_above_cell();
break;
case 39: // Right
next = this.get_next_cell();
break;
case 40: // Down
next = this.get_below_cell();
break;
}
this.process_editable_field(next);
};
/**
* Processes an editable field an does what ever is required to update it
*
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Y.Node|null} next The next node to make editable (chaining)
*/
M.gradereport_grader.classes.ajax.prototype.process_editable_field = function(next) {
if (this.current.has_changed()) {
var properties = this.report.get_cell_info(this.current.node);
var values = this.current.commit();
this.current.revert();
this.submit(properties, values);
} else {
this.current.revert();
}
this.current = null;
if (next) {
this.make_editable(next, null);
}
// Fire the global resized event for the gradereport_grader to update the table row/column sizes.
Y.Global.fire('moodle-gradereport_grader:resized');
};
/**
* Gets the next cell that is editable (right)
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Y.Node} cell
* @return {Y.Node}
*/
M.gradereport_grader.classes.ajax.prototype.get_next_cell = function(cell) {
var n = cell || this.current.node;
var next = n.next('td');
var tr = null;
if (!next && (tr = n.ancestor('tr').next('tr'))) {
next = tr.all('.grade').item(0);
}
if (!next) {
return this.current.node;
}
// Continue on until we find a navigable cell
if (!next.hasClass('gbnavigable')) {
return this.get_next_cell(next);
}
return next;
};
/**
* Gets the previous cell that is editable (left)
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Y.Node} cell
* @return {Y.Node}
*/
M.gradereport_grader.classes.ajax.prototype.get_prev_cell = function(cell) {
var n = cell || this.current.node;
var next = n.previous('.grade');
var tr = null;
if (!next && (tr = n.ancestor('tr').previous('tr'))) {
var cells = tr.all('.grade');
next = cells.item(cells.size()-1);
}
if (!next) {
return this.current.node;
}
// Continue on until we find a navigable cell
if (!next.hasClass('gbnavigable')) {
return this.get_prev_cell(next);
}
return next;
};
/**
* Gets the cell above if it is editable (up)
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Y.Node} cell
* @return {Y.Node}
*/
M.gradereport_grader.classes.ajax.prototype.get_above_cell = function(cell) {
var n = cell || this.current.node;
var tr = n.ancestor('tr').previous('tr');
var next = null;
if (tr) {
var column = 0;
var ntemp = n;
while (ntemp = ntemp.previous('td.cell')) {
column++;
}
next = tr.all('td.cell').item(column);
}
if (!next) {
return this.current.node;
}
// Continue on until we find a navigable cell
if (!next.hasClass('gbnavigable')) {
return this.get_above_cell(next);
}
return next;
};
/**
* Gets the cell below if it is editable (down)
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Y.Node} cell
* @return {Y.Node}
*/
M.gradereport_grader.classes.ajax.prototype.get_below_cell = function(cell) {
var n = cell || this.current.node;
var tr = n.ancestor('tr').next('tr');
var next = null;
if (tr && !tr.hasClass('avg')) {
var column = 0;
var ntemp = n;
while (ntemp = ntemp.previous('td.cell')) {
column++;
}
next = tr.all('td.cell').item(column);
}
if (!next) {
return this.current.node;
}
// Continue on until we find a navigable cell
if (!next.hasClass('gbnavigable')) {
return this.get_below_cell(next);
}
return next;
};
/**
* Submits changes for update
*
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Object} properties Properties of the cell being edited
* @param {Object} values Object containing old + new values
*/
M.gradereport_grader.classes.ajax.prototype.submit = function(properties, values) {
// Stop the IO queue so we can add to it
this.report.Y.io.queue.stop();
// If the grade has changed add an IO transaction to update it to the queue
if (values.grade !== values.oldgrade) {
this.pendingsubmissions.push({transaction:this.report.Y.io.queue(M.cfg.wwwroot+'/grade/report/grader/ajax_callbacks.php', {
method : 'POST',
data : 'id='+this.courseid+'&userid='+properties.userid+'&itemid='+properties.itemid+'&action=update&newvalue='+values.grade+'&type='+properties.itemtype+'&sesskey='+M.cfg.sesskey,
on : {
complete : this.submission_outcome
},
context : this,
arguments : {
properties : properties,
values : values,
type : 'grade'
}
}),complete:false,outcome:null});
}
// If feedback is editable and has changed add to the IO queue for it
if (values.editablefeedback && values.feedback !== values.oldfeedback) {
values.feedback = encodeURIComponent(values.feedback);
this.pendingsubmissions.push({transaction:this.report.Y.io.queue(M.cfg.wwwroot+'/grade/report/grader/ajax_callbacks.php', {
method : 'POST',
data : 'id='+this.courseid+'&userid='+properties.userid+'&itemid='+properties.itemid+'&action=update&newvalue='+values.feedback+'&type=feedback&sesskey='+M.cfg.sesskey,
on : {
complete : this.submission_outcome
},
context : this,
arguments : {
properties : properties,
values : values,
type : 'feedback'
}
}),complete:false,outcome:null});
}
// Process the IO queue
this.report.Y.io.queue.start();
};
/**
* Callback function for IO transaction completions
*
* Uses a synchronous queue to ensure we maintain some sort of order
*
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {Int} tid Transaction ID
* @param {Object} outcome
* @param {Mixed} args
*/
M.gradereport_grader.classes.ajax.prototype.submission_outcome = function(tid, outcome, args) {
// Parse the response as JSON
try {
outcome = this.report.Y.JSON.parse(outcome.responseText);
} catch(e) {
var message = M.util.get_string('ajaxfailedupdate', 'gradereport_grader');
message = message.replace(/\[1\]/, args.type);
message = message.replace(/\[2\]/, this.report.users[args.properties.userid]);
this.display_submission_error(message, args.properties.cell);
return;
}
// Quick reference for the grader report
var i = null;
// Check the outcome
if (outcome.result == 'success') {
// Iterate through each row in the result object
for (i in outcome.row) {
if (outcome.row[i] && outcome.row[i].userid && outcome.row[i].itemid) {
// alias it, we use it quite a bit
var r = outcome.row[i];
// Get the cell referred to by this result object
var info = this.report.get_cell_info([r.userid, r.itemid]);
if (!info) {
continue;
}
// Calculate the final grade for the cell
var finalgrade = '';
var scalegrade = -1;
if (!r.finalgrade) {
if (this.report.isediting) {
// In edit mode don't put hyphens in the grade text boxes
finalgrade = '';
} else {
// In non-edit mode put a hyphen in the grade cell
finalgrade = '-';
}
} else {
if (r.scale) {
scalegrade = parseFloat(r.finalgrade);
finalgrade = this.scales[r.scale][scalegrade-1];
} else {
finalgrade = parseFloat(r.finalgrade).toFixed(info.itemdp);
}
}
if (this.report.isediting) {
var grade = info.cell.one('#grade_'+r.userid+'_'+r.itemid);
if (grade) {
// This means the item has a input element to update.
var parent = grade.ancestor('td');
if (parent.hasClass('grade_type_scale')) {
grade.all('option').each(function(option) {
if (option.get('value') == scalegrade) {
option.setAttribute('selected', 'selected');
} else {
option.removeAttribute('selected');
}
});
} else {
grade.set('value', finalgrade);
}
} else if (info.cell.one('.gradevalue')) {
// This means we are updating a value for something without editing boxed (locked, etc).
info.cell.one('.gradevalue').set('innerHTML', finalgrade);
}
} else {
// If there is no currently editing field or if this cell is not being currently edited
if (!this.current || info.cell.get('id') != this.current.node.get('id')) {
// Update the value
var node = info.cell.one('.gradevalue');
var td = node.ancestor('td');
// Only scale and value type grades should have their content updated in this way.
if (td.hasClass('grade_type_value') || td.hasClass('grade_type_scale')) {
node.set('innerHTML', finalgrade);
}
} else if (this.current && info.cell.get('id') == this.current.node.get('id')) {
// If we are here the grade value of the cell currently being edited has changed !!!!!!!!!
// If the user has not actually changed the old value yet we will automatically correct it
// otherwise we will prompt the user to choose to use their value or the new value!
if (!this.current.has_changed() || confirm(M.util.get_string('ajaxfieldchanged', 'gradereport_grader'))) {
this.current.set_grade(finalgrade);
if (this.current.grade) {
this.current.grade.set('value', finalgrade);
}
}
}
}
}
}
// Flag the changed cell as overridden by ajax
args.properties.cell.addClass('ajaxoverridden');
} else {
var p = args.properties;
if (args.type == 'grade') {
var oldgrade = args.values.oldgrade;
p.cell.one('.gradevalue').set('innerHTML',oldgrade);
} else if (args.type == 'feedback') {
this.report.update_feedback(p.userid, p.itemid, args.values.oldfeedback);
}
this.display_submission_error(outcome.message, p.cell);
}
// Check if all IO transactions in the queue are complete yet
var allcomplete = true;
for (i in this.pendingsubmissions) {
if (this.pendingsubmissions[i]) {
if (this.pendingsubmissions[i].transaction.id == tid) {
this.pendingsubmissions[i].complete = true;
this.pendingsubmissions[i].outcome = outcome;
this.report.Y.io.queue.remove(this.pendingsubmissions[i].transaction);
}
if (!this.pendingsubmissions[i].complete) {
allcomplete = false;
}
}
}
if (allcomplete) {
this.pendingsubmissions = [];
}
};
/**
* Displays a submission error within a overlay on the cell that failed update
*
* @function
* @this {M.gradereport_grader.classes.ajax}
* @param {String} message
* @param {Y.Node} cell
*/
M.gradereport_grader.classes.ajax.prototype.display_submission_error = function(message, cell) {
var erroroverlay = new this.report.Y.Overlay({
headerContent : '<div><strong class="error">'+M.util.get_string('ajaxerror', 'gradereport_grader')+'</strong> <em>'+M.util.get_string('ajaxclicktoclose', 'gradereport_grader')+'</em></div>',
bodyContent : message,
visible : false,
zIndex : 3
});
erroroverlay.set('xy', [cell.getX()+10,cell.getY()+10]);
erroroverlay.render(this.report.table.ancestor('div'));
erroroverlay.show();
erroroverlay.get('boundingBox').on('click', function(){
this.get('boundingBox').setStyle('visibility', 'hidden');
this.hide();
this.destroy();
}, erroroverlay);
erroroverlay.get('boundingBox').setStyle('visibility', 'visible');
};
/**
* A class for existing fields
* This class is used only when the user is in editing mode
*
* @class existingfield
* @constructor
* @param {M.gradereport_grader.classes.report} report
* @param {Int} userid
* @param {Int} itemid
*/
M.gradereport_grader.classes.existingfield = function(ajax, userid, itemid) {
this.report = ajax.report;
this.userid = userid;
this.itemid = itemid;
this.editfeedback = ajax.showquickfeedback;
this.grade = this.report.Y.one('#grade_'+userid+'_'+itemid);
var i = 0;
if (this.grade) {
for (i = 0; i < this.report.grades.length; i++) {
if (this.report.grades[i]['user'] == this.userid && this.report.grades[i]['item'] == this.itemid) {
this.oldgrade = this.report.grades[i]['grade'];
}
}
if (!this.oldgrade) {
// Assigning an empty string makes determining whether the grade has been changed easier
// This value is never sent to the server
this.oldgrade = '';
}
// On blur save any changes in the grade field
this.grade.on('blur', this.submit, this);
}
// Check if feedback is enabled
if (this.editfeedback) {
// Get the feedback fields
this.feedback = this.report.Y.one('#feedback_'+userid+'_'+itemid);
if (this.feedback) {
for(i = 0; i < this.report.feedback.length; i++) {
if (this.report.feedback[i]['user'] == this.userid && this.report.feedback[i]['item'] == this.itemid) {
this.oldfeedback = this.report.feedback[i]['content'];
}
}
if(!this.oldfeedback) {
// Assigning an empty string makes determining whether the feedback has been changed easier
// This value is never sent to the server
this.oldfeedback = '';
}
// On blur save any changes in the feedback field
this.feedback.on('blur', this.submit, this);
// Override the default tab movements when moving between cells
// Handle Tab.
this.keyevents.push(this.report.Y.on('key', this.keypress_tab, this.feedback, 'press:9', this, true));
// Handle the Enter key being pressed.
this.keyevents.push(this.report.Y.on('key', this.keypress_enter, this.feedback, 'press:13', this));
// Handle CTRL + arrow keys.
this.keyevents.push(this.report.Y.on('key', this.keypress_arrows, this.feedback, 'press:37,38,39,40+ctrl', this));
if (this.grade) {
// Override the default tab movements when moving between cells
// Handle Shift+Tab.
this.keyevents.push(this.report.Y.on('key', this.keypress_tab, this.grade, 'press:9+shift', this));
// Override the default tab movements for fields in the same cell
this.keyevents.push(this.report.Y.on('key',
function(e){e.preventDefault();this.grade.focus();},
this.feedback,
'press:9+shift',
this));
this.keyevents.push(this.report.Y.on('key',
function(e){if (e.shiftKey) {return;}e.preventDefault();this.feedback.focus();},
this.grade,
'press:9',
this));
}
}
} else if (this.grade) {
// Handle Tab and Shift+Tab.
this.keyevents.push(this.report.Y.on('key', this.keypress_tab, this.grade, 'down:9', this));
}
if (this.grade) {
// Handle the Enter key being pressed.
this.keyevents.push(this.report.Y.on('key', this.keypress_enter, this.grade, 'up:13', this));
// Handle CTRL + arrow keys.
this.keyevents.push(this.report.Y.on('key', this.keypress_arrows, this.grade, 'down:37,38,39,40+ctrl', this));
}
};
/**
* Attach the required properties and methods to the existing field class
* via prototyping
*/
M.gradereport_grader.classes.existingfield.prototype.userid = null;
M.gradereport_grader.classes.existingfield.prototype.itemid = null;
M.gradereport_grader.classes.existingfield.prototype.editfeedback = false;
M.gradereport_grader.classes.existingfield.prototype.grade = null;
M.gradereport_grader.classes.existingfield.prototype.oldgrade = null;
M.gradereport_grader.classes.existingfield.prototype.keyevents = [];
/**
* Handles saving of changed on keypress
*
* @function
* @this {M.gradereport_grader.classes.existingfield}
* @param {Event} e
*/
M.gradereport_grader.classes.existingfield.prototype.keypress_enter = function(e) {
e.preventDefault();
this.submit();
};
/**
* Handles setting the correct focus if the user presses tab
*
* @function
* @this {M.gradereport_grader.classes.existingfield}
* @param {Event} e
* @param {Bool} ignoreshift
*/
M.gradereport_grader.classes.existingfield.prototype.keypress_tab = function(e, ignoreshift) {
e.preventDefault();
var next = null;
if (e.shiftKey) {
if (ignoreshift) {
return;
}
next = this.report.ajax.get_above_cell(this.grade.ancestor('td'));
} else {
next = this.report.ajax.get_below_cell(this.grade.ancestor('td'));
}
this.move_focus(next);
};
/**
* Handles setting the correct focus when the user presses CTRL+arrow keys
*
* @function
* @this {M.gradereport_grader.classes.existingfield}
* @param {Event} e
*/
M.gradereport_grader.classes.existingfield.prototype.keypress_arrows = function(e) {
e.preventDefault();
var next = null;
switch (e.keyCode) {
case 37: // Left
next = this.report.ajax.get_prev_cell(this.grade.ancestor('td'));
break;
case 38: // Up
next = this.report.ajax.get_above_cell(this.grade.ancestor('td'));
break;
case 39: // Right
next = this.report.ajax.get_next_cell(this.grade.ancestor('td'));
break;
case 40: // Down
next = this.report.ajax.get_below_cell(this.grade.ancestor('td'));
break;
}
this.move_focus(next);
};
/**
* Move the focus to the node
* @function
* @this {M.gradereport_grader.classes.existingfield}
* @param {Y.Node} node
*/
M.gradereport_grader.classes.existingfield.prototype.move_focus = function(node) {
if (node) {
var properties = this.report.get_cell_info(node);
this.report.ajax.current = node;
switch(properties.itemtype) {
case 'scale':
properties.cell.one('select.select').focus();
break;
case 'value':
default:
properties.cell.one('input.text').focus();
break;
}
}
};
/**
* Checks if the values for the field have changed
*
* @function
* @this {M.gradereport_grader.classes.existingfield}
* @return {Bool}
*/
M.gradereport_grader.classes.existingfield.prototype.has_changed = function() {
if (this.grade) {
if (this.grade.get('value') !== this.oldgrade) {
return true;
}
}
if (this.editfeedback && this.feedback) {
if (this.feedback.get('value') !== this.oldfeedback) {
return true;
}
}
return false;
};
/**
* Submits any changes and then updates the fields accordingly
*
* @function
* @this {M.gradereport_grader.classes.existingfield}
*/
M.gradereport_grader.classes.existingfield.prototype.submit = function() {
if (!this.has_changed()) {
return;
}
var properties = this.report.get_cell_info([this.userid,this.itemid]);
var values = (function(f){
var feedback, oldfeedback, grade, oldgrade = null;
if (f.editfeedback && f.feedback) {
feedback = f.feedback.get('value');
oldfeedback = f.oldfeedback;
}
if (f.grade) {
grade = f.grade.get('value');
oldgrade = f.oldgrade;
}
return {
editablefeedback : f.editfeedback,
grade : grade,
oldgrade : oldgrade,
feedback : feedback,
oldfeedback : oldfeedback
};
})(this);
this.oldgrade = values.grade;
if (values.editablefeedback && values.feedback != values.oldfeedback) {
this.report.update_feedback(this.userid, this.itemid, values.feedback);
this.oldfeedback = values.feedback;
}
this.report.ajax.submit(properties, values);
};
/**
* Textfield class
* This classes gets used in conjunction with the report running with AJAX enabled
* and is used to manage a cell that has a grade requiring a textfield for input
*
* @class textfield
* @constructor
* @this {M.gradereport_grader.classes.textfield}
* @param {M.gradereport_grader.classes.report} report
* @param {Y.Node} node
*/
M.gradereport_grader.classes.textfield = function(report, node) {
this.report = report;
this.node = node;
this.gradespan = node.one('.gradevalue');
this.inputdiv = this.report.Y.Node.create('<div></div>');
this.editfeedback = this.report.ajax.showquickfeedback;
this.grade = this.report.Y.Node.create('<input type="text" class="text" value="" name="ajaxgrade" />');
this.gradetype = 'value';
this.inputdiv.append(this.grade);
if (this.report.ajax.showquickfeedback) {
this.feedback = this.report.Y.Node.create('<input type="text" class="quickfeedback" value="" name="ajaxfeedback" />');
this.inputdiv.append(this.feedback);
}
};
/**
* Extend the textfield class with the following methods and properties
*/
M.gradereport_grader.classes.textfield.prototype.keyevents = [];
M.gradereport_grader.classes.textfield.prototype.editable = false;
M.gradereport_grader.classes.textfield.prototype.gradetype = null;
M.gradereport_grader.classes.textfield.prototype.grade = null;
M.gradereport_grader.classes.textfield.prototype.report = null;
M.gradereport_grader.classes.textfield.prototype.node = null;
M.gradereport_grader.classes.textfield.prototype.gradespam = null;
M.gradereport_grader.classes.textfield.prototype.inputdiv = null;
M.gradereport_grader.classes.textfield.prototype.editfeedback = false;
/**
* Replaces the cell contents with the controls to enable editing
*
* @function
* @this {M.gradereport_grader.classes.textfield}
* @return {M.gradereport_grader.classes.textfield}
*/
M.gradereport_grader.classes.textfield.prototype.replace = function() {
this.set_grade(this.get_grade());
if (this.editfeedback) {
this.set_feedback(this.get_feedback());
}
this.node.replaceChild(this.inputdiv, this.gradespan);
if (this.grade) {
this.grade.focus();
} else if (this.feedback) {
this.feedback.focus();
}
this.editable = true;
return this;
};
/**
* Commits the changes within a cell and returns a result object of new + old values
* @function
* @this {M.gradereport_grader.classes.textfield}
* @return {Object}
*/
M.gradereport_grader.classes.textfield.prototype.commit = function() {
// Produce an anonymous result object contianing all values
var result = (function(field){
// Editable false lets us get the pre-update values.
field.editable = false;
var oldgrade = field.get_grade();
if (oldgrade == '-') {
oldgrade = '';
}
var feedback = null;
var oldfeedback = null;
if (field.editfeedback) {
oldfeedback = field.get_feedback();
}
// Now back to editable gives us the values in the edit areas.
field.editable = true;
if (field.editfeedback) {
feedback = field.get_feedback();
}
return {
gradetype : field.gradetype,
editablefeedback : field.editfeedback,
grade : field.get_grade(),
oldgrade : oldgrade,
feedback : feedback,
oldfeedback : oldfeedback
};
})(this);
// Set the changes in stone
this.set_grade(result.grade);
if (this.editfeedback) {
this.set_feedback(result.feedback);
}
// Return the result object
return result;
};
/**
* Reverts a cell back to its static contents
* @function
* @this {M.gradereport_grader.classes.textfield}
*/
M.gradereport_grader.classes.textfield.prototype.revert = function() {
this.node.replaceChild(this.gradespan, this.inputdiv);
for (var i in this.keyevents) {
if (this.keyevents[i]) {
this.keyevents[i].detach();
}
}
this.keyevents = [];
this.node.on('click', this.report.ajax.make_editable, this.report.ajax);
};
/**
* Gets the grade for current cell
*
* @function
* @this {M.gradereport_grader.classes.textfield}
* @return {Mixed}
*/
M.gradereport_grader.classes.textfield.prototype.get_grade = function() {
if (this.editable) {
return this.grade.get('value');
}
return this.gradespan.get('innerHTML');
};
/**
* Sets the grade for the current cell
* @function
* @this {M.gradereport_grader.classes.textfield}
* @param {Mixed} value
*/
M.gradereport_grader.classes.textfield.prototype.set_grade = function(value) {
if (!this.editable) {
if (value == '-') {
value = '';
}
this.grade.set('value', value);
} else {
if (value == '') {
value = '-';
}
this.gradespan.set('innerHTML', value);
}
};
/**
* Gets the feedback for the current cell
* @function
* @this {M.gradereport_grader.classes.textfield}
* @return {String}
*/
M.gradereport_grader.classes.textfield.prototype.get_feedback = function() {
if (this.editable) {
if (this.feedback) {
return this.feedback.get('value');
} else {
return null;
}
}
var properties = this.report.get_cell_info(this.node);
if (properties) {
return properties.feedback;
}
return '';
};
/**
* Sets the feedback for the current cell
* @function
* @this {M.gradereport_grader.classes.textfield}
* @param {Mixed} value
*/
M.gradereport_grader.classes.textfield.prototype.set_feedback = function(value) {
if (!this.editable) {
if (this.feedback) {
this.feedback.set('value', value);
}
} else {
var properties = this.report.get_cell_info(this.node);
this.report.update_feedback(properties.userid, properties.itemid, value);
}
};
/**
* Checks if the current cell has changed at all
* @function
* @this {M.gradereport_grader.classes.textfield}
* @return {Bool}
*/
M.gradereport_grader.classes.textfield.prototype.has_changed = function() {
// If its not editable it has not changed
if (!this.editable) {
return false;
}
// If feedback is being edited then it has changed if either grade or feedback have changed
if (this.editfeedback) {
var properties = this.report.get_cell_info(this.node);
if (this.get_feedback() != properties.feedback) {
return true;
}
}
if (this.grade) {
return (this.get_grade() != this.gradespan.get('innerHTML'));
} else {
return false;
}
};
/**
* Attaches the key listeners for the editable fields and stored the event references
* against the textfield
*
* @function
* @this {M.gradereport_grader.classes.textfield}
*/
M.gradereport_grader.classes.textfield.prototype.attach_key_events = function() {
var a = this.report.ajax;
// Setup the default key events for tab and enter
if (this.editfeedback) {
if (this.grade) {
// Handle Shift+Tab.
this.keyevents.push(this.report.Y.on('key', a.keypress_tab, this.grade, 'down:9+shift', a));
}
// Handle Tab.
this.keyevents.push(this.report.Y.on('key', a.keypress_tab, this.feedback, 'down:9', a, true));
// Handle the Enter key being pressed.
this.keyevents.push(this.report.Y.on('key', a.keypress_enter, this.feedback, 'up:13', a));
} else {
if (this.grade) {
// Handle Tab and Shift+Tab.
this.keyevents.push(this.report.Y.on('key', a.keypress_tab, this.grade, 'down:9', a));
}
}
// Setup the arrow key events.
// Handle CTRL + arrow keys.
this.keyevents.push(this.report.Y.on('key', a.keypress_arrows, this.inputdiv.ancestor('td'), 'down:37,38,39,40+ctrl', a));
if (this.grade) {
// Handle the Enter key being pressed.
this.keyevents.push(this.report.Y.on('key', a.keypress_enter, this.grade, 'up:13', a));
// Prevent the default key action on all fields for arrow keys on all key events!
// Note: this still does not work in FF!!!!!
this.keyevents.push(this.report.Y.on('key', function(e){e.preventDefault();}, this.grade, 'down:37,38,39,40+ctrl'));
this.keyevents.push(this.report.Y.on('key', function(e){e.preventDefault();}, this.grade, 'press:37,38,39,40+ctrl'));
this.keyevents.push(this.report.Y.on('key', function(e){e.preventDefault();}, this.grade, 'up:37,38,39,40+ctrl'));
}
};
/**
* Feedback field class
* This classes gets used in conjunction with the report running with AJAX enabled
* and is used to manage a cell that no editable grade, only possibly feedback
*
* @class feedbackfield
* @constructor
* @this {M.gradereport_grader.classes.feedbackfield}
* @param {M.gradereport_grader.classes.report} report
* @param {Y.Node} node
*/
M.gradereport_grader.classes.feedbackfield = function(report, node) {
this.report = report;
this.node = node;
this.gradespan = node.one('.gradevalue');
this.inputdiv = this.report.Y.Node.create('<div></div>');
this.editfeedback = this.report.ajax.showquickfeedback;
this.gradetype = 'text';
if (this.report.ajax.showquickfeedback) {
this.feedback = this.report.Y.Node.create('<input type="text" class="quickfeedback" value="" name="ajaxfeedback" />');
this.inputdiv.append(this.feedback);
}
};
/**
* Gets the grade for current cell (which will always be null)
*
* @function
* @this {M.gradereport_grader.classes.feedbackfield}
* @return {Mixed}
*/
M.gradereport_grader.classes.feedbackfield.prototype.get_grade = function() {
return null;
};
/**
* Overrides the set_grade function of textfield so that it can ignore the set-grade
* for grade cells without grades
*
* @function
* @this {M.gradereport_grader.classes.feedbackfield}
* @param {String} value
*/
M.gradereport_grader.classes.feedbackfield.prototype.set_grade = function() {
return;
};
/**
* Manually extend the feedbackfield class with the properties and methods of the
* textfield class that have not been defined
*/
for (var i in M.gradereport_grader.classes.textfield.prototype) {
if (!M.gradereport_grader.classes.feedbackfield.prototype[i]) {
M.gradereport_grader.classes.feedbackfield.prototype[i] = M.gradereport_grader.classes.textfield.prototype[i];
}
}
/**
* An editable scale field
*
* @class scalefield
* @constructor
* @inherits M.gradereport_grader.classes.textfield
* @base M.gradereport_grader.classes.textfield
* @this {M.gradereport_grader.classes.scalefield}
* @param {M.gradereport_grader.classes.report} report
* @param {Y.Node} node
*/
M.gradereport_grader.classes.scalefield = function(report, node) {
this.report = report;
this.node = node;
this.gradespan = node.one('.gradevalue');
this.inputdiv = this.report.Y.Node.create('<div></div>');
this.editfeedback = this.report.ajax.showquickfeedback;
this.grade = this.report.Y.Node.create('<select type="text" class="text" name="ajaxgrade" /><option value="-1">'+
M.util.get_string('ajaxchoosescale', 'gradereport_grader')+'</option></select>');
this.gradetype = 'scale';
this.inputdiv.append(this.grade);
if (this.editfeedback) {
this.feedback = this.report.Y.Node.create('<input type="text" class="quickfeedback" value="" name="ajaxfeedback"/>');
this.inputdiv.append(this.feedback);
}
var properties = this.report.get_cell_info(node);
this.scale = this.report.ajax.scales[properties.itemscale];
for (var i in this.scale) {
if (this.scale[i]) {
this.grade.append(this.report.Y.Node.create('<option value="'+(parseFloat(i)+1)+'">'+this.scale[i]+'</option>'));
}
}
};
/**
* Override + extend the scalefield class with the following properties
* and methods
*/
/**
* @property {Array} scale
*/
M.gradereport_grader.classes.scalefield.prototype.scale = [];
/**
* Extend the scalefield with the functions from the textfield
*/
/**
* Overrides the get_grade function so that it can pick up the value from the
* scales select box
*
* @function
* @this {M.gradereport_grader.classes.scalefield}
* @return {Int} the scale id
*/
M.gradereport_grader.classes.scalefield.prototype.get_grade = function(){
if (this.editable) {
// Return the scale value
return this.grade.all('option').item(this.grade.get('selectedIndex')).get('value');
} else {
// Return the scale values id
var value = this.gradespan.get('innerHTML');
for (var i in this.scale) {
if (this.scale[i] == value) {
return parseFloat(i)+1;
}
}
return -1;
}
};
/**
* Overrides the set_grade function of textfield so that it can set the scale
* within the scale select box
*
* @function
* @this {M.gradereport_grader.classes.scalefield}
* @param {String} value
*/
M.gradereport_grader.classes.scalefield.prototype.set_grade = function(value) {
if (!this.editable) {
if (value == '-') {
value = '-1';
}
this.grade.all('option').each(function(node){
if (node.get('value') == value) {
node.set('selected', true);
}
});
} else {
if (value == '' || value == '-1') {
value = '-';
} else {
value = this.scale[parseFloat(value)-1];
}
this.gradespan.set('innerHTML', value);
}
};
/**
* Checks if the current cell has changed at all
* @function
* @this {M.gradereport_grader.classes.scalefield}
* @return {Bool}
*/
M.gradereport_grader.classes.scalefield.prototype.has_changed = function() {
if (!this.editable) {
return false;
}
var gradef = this.get_grade();
this.editable = false;
var gradec = this.get_grade();
this.editable = true;
if (this.editfeedback) {
var properties = this.report.get_cell_info(this.node);
var feedback = properties.feedback;
return (gradef != gradec || this.get_feedback() != feedback);
}
return (gradef != gradec);
};
/**
* Manually extend the scalefield class with the properties and methods of the
* textfield class that have not been defined
*/
for (var i in M.gradereport_grader.classes.textfield.prototype) {
if (!M.gradereport_grader.classes.scalefield.prototype[i]) {
M.gradereport_grader.classes.scalefield.prototype[i] = M.gradereport_grader.classes.textfield.prototype[i];
}
}