1 YUI.add('moodle-mod_quiz-util-slot', function (Y, NAME) {
4 * A collection of utility classes for use with slots.
6 * @module moodle-mod_quiz-util
7 * @submodule moodle-mod_quiz-util-slot
10 Y.namespace('Moodle.mod_quiz.util.slot');
13 * A collection of utility classes for use with slots.
15 * @class Moodle.mod_quiz.util.slot
18 Y.Moodle.mod_quiz.util.slot = {
21 QUESTIONTYPEDESCRIPTION : 'qtype_description',
22 CANNOT_DEPEND: 'question_dependency_cannot_depend'
25 SLOTIDPREFIX : 'slot-',
26 QUESTION : M.util.get_string('question', 'moodle')
30 INSTANCENAME: '.instancename',
31 NUMBER: 'span.slotnumber',
32 PAGECONTENT : 'div#page-content',
33 PAGEBREAK : 'span.page_split_join_wrapper',
34 ICON : 'img.smallicon',
35 QUESTIONTYPEDESCRIPTION : '.qtype_description',
36 SECTIONUL : 'ul.section',
37 DEPENDENCY_WRAPPER : '.question_dependency_wrapper',
38 DEPENDENCY_LINK : '.question_dependency_wrapper .cm-edit-action',
39 DEPENDENCY_ICON : '.question_dependency_wrapper img'
43 * Retrieve the slot item from one of it's child Nodes.
45 * @method getSlotFromComponent
46 * @param slotcomponent {Node} The component Node.
47 * @return {Node|null} The Slot Node.
49 getSlotFromComponent: function(slotcomponent) {
50 return Y.one(slotcomponent).ancestor(this.SELECTORS.SLOT, true);
54 * Determines the slot ID for the provided slot.
57 * @param slot {Node} The slot to find an ID for.
58 * @return {Number|false} The ID of the slot in question or false if no ID was found.
60 getId: function(slot) {
61 // We perform a simple substitution operation to get the ID.
62 var id = slot.get('id').replace(
63 this.CONSTANTS.SLOTIDPREFIX, '');
65 // Attempt to validate the ID.
66 id = parseInt(id, 10);
67 if (typeof id === 'number' && isFinite(id)) {
74 * Determines the slot name for the provided slot.
77 * @param slot {Node} The slot to find a name for.
78 * @return {string|false} The name of the slot in question or false if no ID was found.
80 getName: function(slot) {
81 var instance = slot.one(this.SELECTORS.INSTANCENAME);
83 return instance.get('firstChild').get('data');
89 * Determines the slot number for the provided slot.
92 * @param slot {Node} The slot to find the number for.
93 * @return {Number|false} The number of the slot in question or false if no number was found.
95 getNumber: function(slot) {
99 // We perform a simple substitution operation to get the number.
100 var number = slot.one(this.SELECTORS.NUMBER).get('text').replace(
101 this.CONSTANTS.QUESTION, '');
102 // Attempt to validate the ID.
103 number = parseInt(number, 10);
104 if (typeof number === 'number' && isFinite(number)) {
111 * Updates the slot number for the provided slot.
114 * @param slot {Node} The slot to update the number for.
117 setNumber: function(slot, number) {
118 var numbernode = slot.one(this.SELECTORS.NUMBER);
119 numbernode.setHTML('<span class="accesshide">' + this.CONSTANTS.QUESTION + '</span> ' + number);
123 * Returns a list of all slot elements on the page.
126 * @return {node[]} An array containing slot nodes.
128 getSlots: function() {
129 return Y.all(this.SELECTORS.PAGECONTENT + ' ' + this.SELECTORS.SECTIONUL + ' ' + this.SELECTORS.SLOT);
133 * Returns a list of all slot elements on the page that have numbers. Excudes description questions.
136 * @return {node[]} An array containing slot nodes.
138 getNumberedSlots: function() {
139 var selector = this.SELECTORS.PAGECONTENT + ' ' + this.SELECTORS.SECTIONUL;
140 selector += ' ' + this.SELECTORS.SLOT + ':not(' + this.SELECTORS.QUESTIONTYPEDESCRIPTION + ')';
141 return Y.all(selector);
145 * Returns the previous slot to the given slot.
147 * @method getPrevious
148 * @param slot Slot node
149 * @return {node|false} The previous slot node or false.
151 getPrevious: function(slot) {
152 return slot.previous(this.SELECTORS.SLOT);
156 * Returns the previous numbered slot to the given slot.
158 * Ignores slots containing description question types.
160 * @method getPrevious
161 * @param slot Slot node
162 * @return {node|false} The previous slot node or false.
164 getPreviousNumbered: function(slot) {
165 var previous = slot.previous(this.SELECTORS.SLOT + ':not(' + this.SELECTORS.QUESTIONTYPEDESCRIPTION + ')');
170 var section = slot.ancestor('li.section').previous('li.section');
172 var questions = section.all(this.SELECTORS.SLOT + ':not(' + this.SELECTORS.QUESTIONTYPEDESCRIPTION + ')');
173 if (questions.size() > 0) {
174 return questions.item(questions.size() - 1);
176 section = section.previous('li.section');
182 * Reset the order of the numbers given to each slot.
184 * @method reorderSlots
187 reorderSlots: function() {
188 // Get list of slot nodes.
189 var slots = this.getSlots();
190 // Loop through slots incrementing the number each time.
191 slots.each(function(slot) {
193 if (!Y.Moodle.mod_quiz.util.page.getPageFromSlot(slot)) {
194 // Move the next page to the front.
195 var nextpage = slot.next(Y.Moodle.mod_quiz.util.page.SELECTORS.PAGE);
199 var previousSlot = this.getPreviousNumbered(slot),
200 previousslotnumber = 0;
201 if (slot.hasClass(this.CSS.QUESTIONTYPEDESCRIPTION)) {
206 previousslotnumber = this.getNumber(previousSlot);
210 this.setNumber(slot, previousslotnumber + 1);
215 * Add class only-has-one-slot to those sections that need it.
217 * @method updateOneSlotSections
220 updateOneSlotSections: function() {
221 Y.all('.mod-quiz-edit-content ul.slots li.section').each(function(section) {
222 if (section.all(this.SELECTORS.SLOT).size() > 1) {
223 section.removeClass('only-has-one-slot');
225 section.addClass('only-has-one-slot');
231 * Remove a slot and related elements from the list of slots.
234 * @param slot Slot node
237 remove: function(slot) {
238 var page = Y.Moodle.mod_quiz.util.page.getPageFromSlot(slot);
240 // Is the page empty.
241 if (!Y.Moodle.mod_quiz.util.page.isEmpty(page)) {
244 // If so remove it. Including add menu and page break.
245 Y.Moodle.mod_quiz.util.page.remove(page);
249 * Returns a list of all page break elements on the page.
251 * @method getPageBreaks
252 * @return {node[]} An array containing page break nodes.
254 getPageBreaks: function() {
255 var selector = this.SELECTORS.PAGECONTENT + ' ' + this.SELECTORS.SECTIONUL;
256 selector += ' ' + this.SELECTORS.SLOT + this.SELECTORS.PAGEBREAK;
257 return Y.all(selector);
261 * Retrieve the page break element item from the given slot.
263 * @method getPageBreak
264 * @param slot Slot node
265 * @return {Node|null} The Page Break Node.
267 getPageBreak: function(slot) {
268 return Y.one(slot).one(this.SELECTORS.PAGEBREAK);
272 * Add a page break and related elements to the list of slots.
274 * @method addPageBreak
275 * @param beforenode Int | Node | HTMLElement | String to add
276 * @return pagebreak PageBreak node
278 addPageBreak: function(slot) {
279 var nodetext = M.mod_quiz.resource_toolbox.get('config').addpageiconhtml;
280 nodetext = nodetext.replace('%%SLOT%%', this.getNumber(slot));
281 var pagebreak = Y.Node.create(nodetext);
282 slot.one('div').insert(pagebreak, 'after');
287 * Remove a pagebreak from the given slot.
289 * @method removePageBreak
290 * @param slot Slot node
293 removePageBreak: function(slot) {
294 var pagebreak = this.getPageBreak(slot);
303 * Reorder each pagebreak by iterating through each related slot.
305 * @method reorderPageBreaks
308 reorderPageBreaks: function() {
309 // Get list of slot nodes.
310 var slots = this.getSlots(), slotnumber = 0;
311 // Loop through slots incrementing the number each time.
312 slots.each(function(slot, key) {
314 var pagebreak = this.getPageBreak(slot);
315 var nextitem = slot.next('li.activity');
317 // Last slot in a section. Should not have an icon.
321 // No pagebreak and not last slot. Add one.
323 pagebreak = this.addPageBreak(slot);
326 // Remove last page break if there is one.
327 if (pagebreak && key === slots.size() - 1) {
328 this.removePageBreak(slot);
331 // Get page break anchor element.
332 var pagebreaklink = pagebreak.get('childNodes').item(0);
334 // Get the correct title.
335 var action = '', iconname = '';
336 if (Y.Moodle.mod_quiz.util.page.isPage(nextitem)) {
337 action = 'removepagebreak';
338 iconname = 'e/remove_page_break';
340 action = 'addpagebreak';
341 iconname = 'e/insert_page_break';
344 // Update the link and image titles
345 pagebreaklink.set('title', M.util.get_string(action, 'quiz'));
346 pagebreaklink.setData('action', action);
347 // Update the image title.
348 var icon = pagebreaklink.one(this.SELECTORS.ICON);
349 icon.set('title', M.util.get_string(action, 'quiz'));
350 icon.set('alt', M.util.get_string(action, 'quiz'));
352 // Update the image src.
353 icon.set('src', M.util.image_url(iconname));
355 // Get anchor url parameters as an associative array.
356 var params = Y.QueryString.parse(pagebreaklink.get('href'));
357 // Update slot number.
358 params.slot = slotnumber;
359 // Create the new url.
361 for (var index in params) {
365 newurl += index + "=" + params[index];
367 // Update the anchor.
368 pagebreaklink.set('href', newurl);
373 * Update the dependency icons.
375 * @method updateAllDependencyIcons
378 updateAllDependencyIcons: function() {
379 // Get list of slot nodes.
380 var slots = this.getSlots(),
383 // Loop through slots incrementing the number each time.
384 slots.each (function(slot) {
387 if (slotnumber == 1 || previousslot.getData('canfinish') === '0') {
388 slot.one(this.SELECTORS.DEPENDENCY_WRAPPER).addClass(this.CSS.CANNOT_DEPEND);
390 slot.one(this.SELECTORS.DEPENDENCY_WRAPPER).removeClass(this.CSS.CANNOT_DEPEND);
392 this.updateDependencyIcon(slot, null);
399 * Update the slot icon to indicate the new requiresprevious state.
401 * @method slot Slot node
402 * @method requiresprevious Whether this node now requires the previous one.
405 updateDependencyIcon: function(slot, requiresprevious) {
406 var link = slot.one(this.SELECTORS.DEPENDENCY_LINK);
407 var icon = slot.one(this.SELECTORS.DEPENDENCY_ICON);
408 var previousSlot = this.getPrevious(slot);
409 var a = {thisq: this.getNumber(slot)};
411 a.previousq = this.getNumber(previousSlot);
414 if (requiresprevious === null) {
415 requiresprevious = link.getData('action') === 'removedependency';
418 if (requiresprevious) {
419 link.set('title', M.util.get_string('questiondependencyremove', 'quiz', a));
420 link.setData('action', 'removedependency');
421 icon.set('alt', M.util.get_string('questiondependsonprevious', 'quiz'));
422 icon.set('src', M.util.image_url('t/locked', 'moodle'));
424 link.set('title', M.util.get_string('questiondependencyadd', 'quiz', a));
425 link.setData('action', 'adddependency');
426 icon.set('alt', M.util.get_string('questiondependencyfree', 'quiz'));
427 icon.set('src', M.util.image_url('t/unlocked', 'moodle'));
433 }, '@VERSION@', {"requires": ["node", "moodle-mod_quiz-util-base"]});