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   1  M.gradingform_rubriceditor = {'templates' : {}, 'eventhandler' : null, 'name' : null, 'Y' : null};
   2  
   3  /**
   4   * This function is called for each rubriceditor on page.
   5   */
   6  M.gradingform_rubriceditor.init = function(Y, options) {
   7      M.gradingform_rubriceditor.name = options.name
   8      M.gradingform_rubriceditor.Y = Y
   9      M.gradingform_rubriceditor.templates[options.name] = {
  10          'criterion' : options.criteriontemplate,
  11          'level' : options.leveltemplate
  12      }
  13      M.gradingform_rubriceditor.disablealleditors()
  14      Y.on('click', M.gradingform_rubriceditor.clickanywhere, 'body', null)
  15      YUI().use('event-touch', function (Y) {
  16          Y.one('body').on('touchstart', M.gradingform_rubriceditor.clickanywhere);
  17          Y.one('body').on('touchend', M.gradingform_rubriceditor.clickanywhere);
  18      })
  19      M.gradingform_rubriceditor.addhandlers()
  20  };
  21  
  22  // Adds handlers for clicking submit button. This function must be called each time JS adds new elements to html
  23  M.gradingform_rubriceditor.addhandlers = function() {
  24      var Y = M.gradingform_rubriceditor.Y
  25      var name = M.gradingform_rubriceditor.name
  26      if (M.gradingform_rubriceditor.eventhandler) M.gradingform_rubriceditor.eventhandler.detach()
  27      M.gradingform_rubriceditor.eventhandler = Y.on('click', M.gradingform_rubriceditor.buttonclick, '#rubric-'+name+' input[type=submit]', null);
  28  }
  29  
  30  // switches all input text elements to non-edit mode
  31  M.gradingform_rubriceditor.disablealleditors = function() {
  32      var Y = M.gradingform_rubriceditor.Y
  33      var name = M.gradingform_rubriceditor.name
  34      Y.all('#rubric-'+name+' .level').each( function(node) {M.gradingform_rubriceditor.editmode(node, false)} );
  35      Y.all('#rubric-'+name+' .description').each( function(node) {M.gradingform_rubriceditor.editmode(node, false)} );
  36  }
  37  
  38  // function invoked on each click on the page. If level and/or criterion description is clicked
  39  // it switches this element to edit mode. If rubric button is clicked it does nothing so the 'buttonclick'
  40  // function is invoked
  41  M.gradingform_rubriceditor.clickanywhere = function(e) {
  42      if (e.type == 'touchstart') return
  43      var el = e.target
  44      // if clicked on button - disablecurrenteditor, continue
  45      if (el.get('tagName') == 'INPUT' && el.get('type') == 'submit') {
  46          return
  47      }
  48      // else if clicked on level and this level is not enabled - enable it
  49      // or if clicked on description and this description is not enabled - enable it
  50      var focustb = false
  51      while (el && !(el.hasClass('level') || el.hasClass('description'))) {
  52          if (el.hasClass('score')) focustb = true
  53          el = el.get('parentNode')
  54      }
  55      if (el) {
  56          if (el.one('textarea').hasClass('hiddenelement')) {
  57              M.gradingform_rubriceditor.disablealleditors()
  58              M.gradingform_rubriceditor.editmode(el, true, focustb)
  59          }
  60          return
  61      }
  62      // else disablecurrenteditor
  63      M.gradingform_rubriceditor.disablealleditors()
  64  }
  65  
  66  // switch the criterion description or level to edit mode or switch back
  67  M.gradingform_rubriceditor.editmode = function(el, editmode, focustb) {
  68      var ta = el.one('textarea')
  69      if (!editmode && ta.hasClass('hiddenelement')) return;
  70      if (editmode && !ta.hasClass('hiddenelement')) return;
  71      var pseudotablink = '<input type="text" size="1" class="pseudotablink"/>',
  72          taplain = ta.get('parentNode').one('.plainvalue'),
  73          tbplain = null,
  74          tb = el.one('.score input[type=text]')
  75      // add 'plainvalue' next to textarea for description/definition and next to input text field for score (if applicable)
  76      if (!taplain) {
  77          ta.get('parentNode').append('<div class="plainvalue">'+pseudotablink+'<span class="textvalue">&nbsp;</span></div>')
  78          taplain = ta.get('parentNode').one('.plainvalue')
  79          taplain.one('.pseudotablink').on('focus', M.gradingform_rubriceditor.clickanywhere)
  80          if (tb) {
  81              tb.get('parentNode').append('<span class="plainvalue">'+pseudotablink+'<span class="textvalue">&nbsp;</span></span>')
  82              tbplain = tb.get('parentNode').one('.plainvalue')
  83              tbplain.one('.pseudotablink').on('focus', M.gradingform_rubriceditor.clickanywhere)
  84          }
  85      }
  86      if (tb && !tbplain) tbplain = tb.get('parentNode').one('.plainvalue')
  87      if (!editmode) {
  88          // if we need to hide the input fields, copy their contents to plainvalue(s). If description/definition
  89          // is empty, display the default text ('Click to edit ...') and add/remove 'empty' CSS class to element
  90          var value = ta.get('value')
  91          if (value.length) taplain.removeClass('empty')
  92          else {
  93              value = (el.hasClass('level')) ? M.str.gradingform_rubric.levelempty : M.str.gradingform_rubric.criterionempty
  94              taplain.addClass('empty')
  95          }
  96          taplain.one('.textvalue').set('innerHTML', Y.Escape.html(value));
  97          if (tb) tbplain.one('.textvalue').set('innerHTML', Y.Escape.html(tb.get('value')));
  98          // hide/display textarea, textbox and plaintexts
  99          taplain.removeClass('hiddenelement')
 100          ta.addClass('hiddenelement')
 101          if (tb) {
 102              tbplain.removeClass('hiddenelement')
 103              tb.addClass('hiddenelement')
 104          }
 105      } else {
 106          // if we need to show the input fields, set the width/height for textarea so it fills the cell
 107          try {
 108              var width = parseFloat(ta.get('parentNode').getComputedStyle('width')),
 109                  height
 110              if (el.hasClass('level')) height = parseFloat(el.getComputedStyle('height')) - parseFloat(el.one('.score').getComputedStyle('height'))
 111              else height = parseFloat(ta.get('parentNode').getComputedStyle('height'))
 112              ta.setStyle('width', Math.max(width-16,50)+'px')
 113              ta.setStyle('height', Math.max(height,20)+'px')
 114          }
 115          catch (err) {
 116              // this browser do not support 'computedStyle', leave the default size of the textbox
 117          }
 118          // hide/display textarea, textbox and plaintexts
 119          taplain.addClass('hiddenelement')
 120          ta.removeClass('hiddenelement')
 121          if (tb) {
 122              tbplain.addClass('hiddenelement')
 123              tb.removeClass('hiddenelement')
 124          }
 125      }
 126      // focus the proper input field in edit mode
 127      if (editmode) { if (tb && focustb) tb.focus(); else ta.focus() }
 128  }
 129  
 130  // handler for clicking on submit buttons within rubriceditor element. Adds/deletes/rearranges criteria and/or levels on client side
 131  M.gradingform_rubriceditor.buttonclick = function(e, confirmed) {
 132      var Y = M.gradingform_rubriceditor.Y
 133      var name = M.gradingform_rubriceditor.name
 134      if (e.target.get('type') != 'submit') return;
 135      M.gradingform_rubriceditor.disablealleditors()
 136      var chunks = e.target.get('id').split('-'),
 137          action = chunks[chunks.length-1]
 138      if (chunks[0] != name || chunks[1] != 'criteria') return;
 139      var elements_str
 140      if (chunks.length>4 || action == 'addlevel') {
 141          elements_str = '#rubric-'+name+' #'+name+'-criteria-'+chunks[2]+'-levels .level'
 142      } else {
 143          elements_str = '#rubric-'+name+' .criterion'
 144      }
 145      // prepare the id of the next inserted level or criterion
 146      if (action == 'addcriterion' || action == 'addlevel') {
 147          var newid = M.gradingform_rubriceditor.calculatenewid('#rubric-'+name+' .criterion')
 148          var newlevid = M.gradingform_rubriceditor.calculatenewid('#rubric-'+name+' .level')
 149      }
 150      var dialog_options = {
 151          'scope' : this,
 152          'callbackargs' : [e, true],
 153          'callback' : M.gradingform_rubriceditor.buttonclick
 154      };
 155      if (chunks.length == 3 && action == 'addcriterion') {
 156          // ADD NEW CRITERION
 157          var levelsscores = [0], levidx = 1
 158          var parentel = Y.one('#'+name+'-criteria')
 159          if (parentel.one('>tbody')) parentel = parentel.one('>tbody')
 160          if (parentel.all('.criterion').size()) {
 161              var lastcriterion = parentel.all('.criterion').item(parentel.all('.criterion').size()-1).all('.level')
 162              for (levidx=0;levidx<lastcriterion.size();levidx++) levelsscores[levidx] = lastcriterion.item(levidx).one('.score input[type=text]').get('value')
 163          }
 164          for (levidx;levidx<3;levidx++) levelsscores[levidx] = parseFloat(levelsscores[levidx-1])+1
 165          var levelsstr = '';
 166          for (levidx=0;levidx<levelsscores.length;levidx++) {
 167              levelsstr += M.gradingform_rubriceditor.templates[name]['level'].replace(/\{LEVEL-id\}/g, 'NEWID'+(newlevid+levidx)).replace(/\{LEVEL-score\}/g, levelsscores[levidx])
 168          }
 169          var newcriterion = M.gradingform_rubriceditor.templates[name]['criterion'].replace(/\{LEVELS\}/, levelsstr)
 170          parentel.append(newcriterion.replace(/\{CRITERION-id\}/g, 'NEWID'+newid).replace(/\{.+?\}/g, ''))
 171          M.gradingform_rubriceditor.assignclasses('#rubric-'+name+' #'+name+'-criteria-NEWID'+newid+'-levels .level')
 172          M.gradingform_rubriceditor.addhandlers();
 173          M.gradingform_rubriceditor.disablealleditors()
 174          M.gradingform_rubriceditor.assignclasses(elements_str)
 175          M.gradingform_rubriceditor.editmode(Y.one('#rubric-'+name+' #'+name+'-criteria-NEWID'+newid+'-description'),true)
 176      } else if (chunks.length == 5 && action == 'addlevel') {
 177          // ADD NEW LEVEL
 178          var newscore = 0;
 179          parent = Y.one('#'+name+'-criteria-'+chunks[2]+'-levels')
 180          parent.all('.level').each(function (node) { newscore = Math.max(newscore, parseFloat(node.one('.score input[type=text]').get('value'))+1) })
 181          var newlevel = M.gradingform_rubriceditor.templates[name]['level'].
 182              replace(/\{CRITERION-id\}/g, chunks[2]).replace(/\{LEVEL-id\}/g, 'NEWID'+newlevid).replace(/\{LEVEL-score\}/g, newscore).replace(/\{.+?\}/g, '')
 183          parent.append(newlevel)
 184          M.gradingform_rubriceditor.addhandlers();
 185          M.gradingform_rubriceditor.disablealleditors()
 186          M.gradingform_rubriceditor.assignclasses(elements_str)
 187          M.gradingform_rubriceditor.editmode(parent.all('.level').item(parent.all('.level').size()-1), true)
 188      } else if (chunks.length == 4 && action == 'moveup') {
 189          // MOVE CRITERION UP
 190          el = Y.one('#'+name+'-criteria-'+chunks[2])
 191          if (el.previous()) el.get('parentNode').insertBefore(el, el.previous())
 192          M.gradingform_rubriceditor.assignclasses(elements_str)
 193      } else if (chunks.length == 4 && action == 'movedown') {
 194          // MOVE CRITERION DOWN
 195          el = Y.one('#'+name+'-criteria-'+chunks[2])
 196          if (el.next()) el.get('parentNode').insertBefore(el.next(), el)
 197          M.gradingform_rubriceditor.assignclasses(elements_str)
 198      } else if (chunks.length == 4 && action == 'delete') {
 199          // DELETE CRITERION
 200          if (confirmed) {
 201              Y.one('#'+name+'-criteria-'+chunks[2]).remove()
 202              M.gradingform_rubriceditor.assignclasses(elements_str)
 203          } else {
 204              dialog_options['message'] = M.str.gradingform_rubric.confirmdeletecriterion
 205              M.util.show_confirm_dialog(e, dialog_options);
 206          }
 207      } else if (chunks.length == 6 && action == 'delete') {
 208          // DELETE LEVEL
 209          if (confirmed) {
 210              Y.one('#'+name+'-criteria-'+chunks[2]+'-'+chunks[3]+'-'+chunks[4]).remove()
 211              M.gradingform_rubriceditor.assignclasses(elements_str)
 212          } else {
 213              dialog_options['message'] = M.str.gradingform_rubric.confirmdeletelevel
 214              M.util.show_confirm_dialog(e, dialog_options);
 215          }
 216      } else {
 217          // unknown action
 218          return;
 219      }
 220      e.preventDefault();
 221  }
 222  
 223  // properly set classes (first/last/odd/even), level width and/or criterion sortorder for elements Y.all(elements_str)
 224  M.gradingform_rubriceditor.assignclasses = function (elements_str) {
 225      var elements = M.gradingform_rubriceditor.Y.all(elements_str)
 226      for (var i=0;i<elements.size();i++) {
 227          elements.item(i).removeClass('first').removeClass('last').removeClass('even').removeClass('odd').
 228              addClass(((i%2)?'odd':'even') + ((i==0)?' first':'') + ((i==elements.size()-1)?' last':''))
 229          elements.item(i).all('input[type=hidden]').each(
 230              function(node) {if (node.get('name').match(/sortorder/)) node.set('value', i)}
 231          );
 232          if (elements.item(i).hasClass('level')) elements.item(i).set('width', Math.round(100/elements.size())+'%')
 233      }
 234  }
 235  
 236  // returns unique id for the next added element, it should not be equal to any of Y.all(elements_str) ids
 237  M.gradingform_rubriceditor.calculatenewid = function (elements_str) {
 238      var newid = 1
 239      M.gradingform_rubriceditor.Y.all(elements_str).each( function(node) {
 240          var idchunks = node.get('id').split('-'), id = idchunks.pop();
 241          if (id.match(/^NEWID(\d+)$/)) newid = Math.max(newid, parseInt(id.substring(5))+1);
 242      } );
 243      return newid
 244  }