gShowingAllComments = false ;
// indexOf method of Array is unknown by stupid IE.
if (!Array.prototype.indexOf) {
  Array.prototype.indexOf = function(obj, start) {
    for (var i = (start || 0), j = this.length; i < j; i++) {
      if (this[i] === obj) { return i; }
    }
    return -1;
  }
}
// YUI : queue, overlay
Sync = function() {
  // this queue handles both animations and io requests
  this._q = null ;
  
  this._iPreventClick = false ; // oh really ?
}

Sync.prototype = {
  init : function (iComment) {
  this._q = new CY.AsyncQueue() ;
// pr2 this._q = new CY.Queue() ;
  },
  
  setPreventClickOn : function () {
    CY.log("setPreventClickOn !") ;
    if (gLayout.isInFrame())
      parent.f_interfaceFreeze()    
    this._iPreventClick = true ;
  },

  setPreventClickOff : function () {
    CY.log("setPreventClickOff !") ;
    if (gLayout.isInFrame())
      parent.f_interfaceUnfreeze()    
    this._iPreventClick = false ;
  },

  removeCommentRet : function(args) {
    var successfull = args['successfull'] ;
    
    var iComment = (successfull) ? args['failure']['iComment'] : args['success']['iComment'] ;
    
    if (successfull) {
      var filterData = args['returned']['filterData'] ;
      if (gLayout.isInFrame()) {
        parent.f_updateFilterData(filterData) ;
      }
      
      var y = gIComments.getTopPosition()[1] ;
      
      var comment = gDb.getComment(iComment.commentId) ;
      this._q.add(
                function(){
                  
                unpaintCommentScope(comment) ;
                gIComments.close(comment.id) ;
                gIComments.remove(comment.id) ;
                if (comment.reply_to_id != null)
                  gIComments.refresh(comment.reply_to_id) ;
                
                gDb.del(comment) ;
                
                if (gLayout.isInFrame()) {
                  if (gDb.comments.length == 0 && gDb.allComments.length != 0) {
                    parent.f_enqueueMsg(gettext("no filtered comments left")) ;
                  parent.resetFilter() ;  
                  }
                  else {
                  // just counting here ...
                  var filterRes = gDb.computeFilterResults() ;
                  updateFilterResultsCount(filterRes['nbDiscussions'], filterRes['nbComments'], filterRes['nbReplies']) ;
                  }
                }
                }
      );
      
      this._animateTo(y) ;    
    }
    this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
    this.resume() ;
  },
  
  moderateCommentRet : function(args) {
    var successfull = args['successfull'] ;

    var iComment = (successfull) ? args['failure']['iComment'] : args['success']['iComment'] ;

    if (successfull) {
      var ret = args['returned'] ;
      var comment = ret['comment'] ;

      gDb.upd(comment) ;
      
      var shouldReset = gLayout.isInFrame() && !parent.f_isFrameFilterFieldsInit() ;
      if (shouldReset){
        parent.resetFilter() ;
        this._showSingleComment(comment) ;
      }
      else 
        iComment.changeModeration(comment) ;
    }

    this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
    this.resume() ;
  },
  
  saveCommentRet : function(args) {
    var successfull = args['successfull'] ;
    if (successfull) {
      var formId = args['success']['formId'] ;
      var ret = args['returned'] ;
    
      removeFormErrMsg(formId) ;
    
      if ('errors' in ret) { // validation error
        var errors = ret['errors'] ;
        for (var eltName in errors) {
          addFormErrMsg(formId, eltName, errors[eltName]) ;
        }
        this._animateToTop() ;
      }
      else {
        var isReply = function() {return (gNewReply != null) && (formId == gNewReply['ids']['formId']) ;} ;
        var isNewComment = function() {return (gICommentForm != null) && (formId == gICommentForm['formId']) ;} ;
        var isEdit = function() {return (gEdit != null) && (formId == gEdit['ids']['formId']) ;} ;
        
        // doing this here for the a priori moderation case
        if (isNewComment())
          this.hideICommentForm(cleanICommentForm()) ;
        else if (isEdit())
          this._hideEditForm() ;
        else if (isReply())
          this._hideNewReplyForm() ;
        
        if ("ask_for_notification" in ret) {  
          if (ret['ask_for_notification']) {
            // TODO ask for notification ...or use AUTO_CONTRIB ?
            parent.f_yesNoDialog(gettext("Do you want to be notified of all replies in all discussions you participated in?"), gettext("Reply notification"), 
              function() { // special case : no waiting for the return, no error check, nothing !
                  var cfg = {
                  method: "POST", 
                  data: urlEncode({'fun':'ownNotify', 'key':sv_key, 'version_key':sv_version_key, 'email':ret['email'], 'active':false}) 
                } ; 
                CY.io(sv_client_url, cfg);
              }, this, null,
              function() { // special case : no waiting for the return, no error check, nothing !
                  var cfg = {
                  method: "POST", 
                  data: urlEncode({'fun':'ownNotify', 'key':sv_key, 'version_key':sv_version_key, 'email':ret['email'], 'active':true}) 
                } ; 
                CY.io(sv_client_url, cfg);
              }, this, null) ;
          }
        }
          
        
        if ("comment" in ret) { // won't be when add with a priori moderation
          var comment = ret['comment'] ;
  
          gDb.upd(comment) ;
  
          var shouldReset = gLayout.isInFrame() && parent.f_isFrameFilterFieldsInit() ;
          if (shouldReset)
            parent.resetFilter() ;
          else { // ASSUMING filter is in init state ! (because when not // TODO $$$$$$$$$$$ this isn't true anymore .... when passing filter arguments in url !!
              // in frame for now data can't be filtered)
            if (comment.reply_to_id == null) { // not a reply
              unpaintCommentScope(comment) ; // for the edit case
              paintCommentScope(comment) ;
            }
          }
  
          // UPDATE FILTER DATA // TODO move ????
          var filterData = ret['filterData'] ;
          if (gLayout.isInFrame()) {
            parent.f_updateFilterData(filterData) ;
            updateResetFilterResultsCount() ;       
          }

          if (isReply()) { // add reply case
            if (!shouldReset) {
              this._insertReply(comment) ;
            }
          }
          else { // edit (reply or comment) or add (comment) case
              this._showSingleComment(comment) ;
          }
        }
        else 
          this._animateToTop() ;
      }

    }
    else { // TODO ? ALL ret-FUNCTIONS ?
      this._q.add({id:"expl", fn:function () {CY.log('in example .........') ;}}) ;
      this._q.promote("expl") ;
    }

    this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
    this.resume() ;
  },
  
  example : function () {
    CY.log('in example .........') ;
  },

  moderateComment : function(iComment, state) {
    var comment = gDb.getComment(iComment['commentId']) ;
        this._q.add(
              {fn:CY.bind(this.setPreventClickOn, this)},
              {autoContinue:false, fn:CY.bind(doExchange, null, "editComment", {'comment_key':comment.key, 'state':state}, null, this.moderateCommentRet, this, {'iComment':iComment}, gettext("could not save comment"))}
              ).run();
  },
  
  _saveComment : function(serverFun, formId) {
        this._q.add(
              {fn:CY.bind(this.setPreventClickOn, this)},
              {autoContinue:false, fn:CY.bind(doExchange, null, serverFun, {}, formId, this.saveCommentRet, this, {'formId':formId}, gettext("could not save comment"))}
              ).run();
  },
  
  editComment : function() {
    this._saveComment("editComment", gEdit['ids']['formId']) ;
  },
  
  saveComment : function(formId) {
    this._saveComment("addComment", formId) ;
  },
  
  removeComment : function(iComment) {
    checkForOpenedDialog(iComment, function() {
      if (gLayout.isInFrame()) {
        parent.f_yesNoDialog(gettext("Are you sure you want to delete this comment?"), gettext("Warning"), function() { this.animateToTop() ;}, this, null, function() {
          var comment = gDb.getComment(iComment.commentId) ;
              this._q.add(
                    {fn:CY.bind(this.setPreventClickOn, this)},
                    {autoContinue:false, fn:CY.bind(doExchange, null, "removeComment", {'comment_key':comment.key}, null, this.removeCommentRet, this, {'iComment':iComment}, gettext("could not remove comment"))}
                    ).run();
        }, this, null) ;
            
      }
//      else {
//        alert("TODO : can't yet delete comments when not embed in text_view_frame because can't 'dialog' confirmation") ;
//      }
    
    }, this, null) ;
  },
  
  resume : function(commentDbIds, mouseXY) {
    this._q.run() ;
  },
  
  resetAutoContinue : function(callbackId) {
    this._q.getCallback(callbackId).autoContinue = true;
  },
  
  hideICommentForm : function(funObj) {
//    this._q.add({fn:function() {persistICommentFormValues();}}) ;
    this._q.add({autoContinue:false, fn:CY.bind(gICommentForm['animationHide'].run, gICommentForm['animationHide'])}) ;
//    this._q.add({fn:function() {cleanICommentForm();}}) ;
    if (funObj)
      this._q.add(funObj) ;
  },
  
  /* ANIMATION DRIVEN INTERFACE CHANGES */
  
  showCommentForm : function(iComment) {
    checkForOpenedDialog(null, function() {
          this._q.add({fn:CY.bind(this.setPreventClickOn, this)});
      this._q.add({fn:function() {
                if (iComment == null) {
                  var selection = getSelectionInfo() ;
                  updateICommentFormSelection(selection) ;
                }
                showICommentForm(iComment);
              }}) ;
      this._q.add({autoContinue:false, fn:CY.bind(gICommentForm['animationShow'].run, gICommentForm['animationShow'])},
          {fn:CY.bind(this.setPreventClickOff, this)}
          ).run();
    }, this, null) ;
  },
  
  showEditForm : function(iComment) {
    checkForOpenedDialog(null, function() {
          this._q.add({fn:CY.bind(this.setPreventClickOn, this)});

          this._q.add({fn:function() {
                  showEditForm(iComment) ;
                }});
      this._animateToTop() ;
      
          this._q.add({fn:CY.bind(this.setPreventClickOff, this)});
          this._q.run() ;
    }, this, null) ;
  },
  
  showReplyForm : function(iComment) {
    checkForOpenedDialog(null, function() {
          this._q.add({fn:CY.bind(this.setPreventClickOn, this)});

          this._q.add({fn:function() {
                    instanciateNewReplyForm(iComment) ;
                    }});
      this._animateToTop() ;
      
          this._q.add({fn:CY.bind(this.setPreventClickOff, this)});
          this._q.run() ;
    }, this, null) ;
  },
  
  cancelICommentForm : function() {
        this._q.add({fn:CY.bind(this.setPreventClickOn, this)});
        
//    this._q.add({fn:function() {cleanICommentForm();}}) ;
      this.hideICommentForm() ;
      
        this._q.add({fn:CY.bind(this.setPreventClickOff, this)});
        this._q.run() ;
  },
  cancelEdit : function() {
        this._q.add({fn:CY.bind(this.setPreventClickOn, this)});
        
      this._q.add({fn:function() {cancelEditForm();}}) ;
      this._animateToTop() ;
      
        this._q.add({fn:CY.bind(this.setPreventClickOff, this)});
        this._q.run() ;
  },
  cancelReply : function() {
        this._q.add({fn:CY.bind(this.setPreventClickOn, this)});
        
      this._q.add({fn:function() {cancelNewReplyForm();}}) ;
      this._animateToTop() ;
      
        this._q.add({fn:CY.bind(this.setPreventClickOff, this)});
        this._q.run() ;
  },
  changeScopeFormClick : function() {
        this._q.add({fn:CY.bind(this.setPreventClickOn, this)});
        
      this._q.add({fn:function() {changeScopeFormClick();}}) ;
      this._animateToTop() ;
      
        this._q.add({fn:CY.bind(this.setPreventClickOff, this)});
        this._q.run() ;
  },
  // this is invoked during queue execution
  _hideNewReplyForm : function() {
    this._q.add({fn:function() {
          cleanNewReplyForm() ; 
          cancelNewReplyForm() ;}}) ;
  },
  // this is invoked during queue execution
  _hideEditForm : function() {
    this._q.add({fn:function() {
          cancelEditForm() ;}}) ;
  },
  // this is invoked during queue execution
  _insertReply : function(comment) {
    this._q.add({fn:function() {
          var parentComment = gDb.getComment(comment.reply_to_id) ;
          var parentThread = gDb.getThreads([parentComment]) ;
          var previousComment = parentThread[parentThread.length - 2] ; // - 2 because now that comment has been added comment is parentThread[parentThread.length - 1]

          var iComment = gIComments.insertAfter(previousComment, comment) ;
          // iComment CAN'T BE NULL ! (TODO check that there is a
          // check server side that parent exists when adding a reply
          // !)
          
          var parentPosition = gIComments.getPosition(comment.reply_to_id) ;
          iComment.setPosition(parentPosition) ;
          
          // check if activation is necessary (will always be ?)
          var comment_path = gDb.getPath(comment) ;
          var topComment = comment_path[comment_path.length - 1] ;
          if (gIComments.isTopActive(topComment.id))
            iComment.activate() ;

          iComment.show() ;}}) ;
      this._animateToTop() ;
  },
  _showSingleComment : function(comment) {
    if (comment != null) {
      var path = gDb.getPath(comment) ;
      var topAncestorComment = path[path.length - 1] ;
      var topY = 0 ;
      if (comment['start_wrapper'] != -1) 
        topY = CY.get(".c-id-"+topAncestorComment.id).getY() ;
      else 
        topY = CY.get('document').get('scrollTop') ;
      
      this._showComments([topAncestorComment.id], topY, false) ;
      // optim when browsing comments with no reply     
      if (topAncestorComment.replies.length > 0)
        this._animateTo(topY) ;
    }
  },
  _showFocusSingleComment : function(topComment, focusComment, reply) {
    if (topComment != null) {
      var topY = 0 ;
      if (topComment['start_wrapper'] != -1) 
        topY = CY.get(".c-id-"+topComment.id).getY() ;
      else 
        topY = CY.get('document').get('scrollTop') ;
      
      this._showComments([topComment.id], topY, false) ;
      // optim when browsing comments with no reply     
      if (topComment.replies.length > 0 || reply)
        this._animateToAndFocus(topY, focusComment.id, reply) ;
    }
  },

  showSingleComment : function(comment) {
    this._q.add({fn:CY.bind(this.setPreventClickOn, this)}) ;
    this._showSingleComment(comment) ;
    this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
    this._q.run();
  },
  
  showFocusSingleComment : function(topComment, focusComment, reply) {
    this._q.add({fn:CY.bind(this.setPreventClickOn, this)}) ;
    this._showFocusSingleComment(topComment, focusComment, reply) ;
    this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
    this._q.run();
  },
  
  browse : function(order, whereto) { 
    var comment = gIComments.browse(order, whereto) ;
    if (comment != null) 
      this.showSingleComment(comment) ;
  },
  
  _showComments : function(commentDbIds, topY, atDocumentTop) {
    this._q.add(
      {fn:function() {
        gShowingAllComments = atDocumentTop ;     
        gIComments.hide() ; 
        hideToc();
        var cs = CY.Array.map(commentDbIds, function(id) { return gDb.getComment(id) ; }) ;
        var comments = gDb.getThreads(cs) ;
        gIComments.fetch(comments) ;
  
        if (commentDbIds.length > 0) {
          if (atDocumentTop) {
            CY.get('document').set('scrollTop', 0) ; 
          }
          else {
            gIComments.activate(commentDbIds[0]) ;
            var scopeStart = CY.get(".c-id-"+commentDbIds[0]) ;
            if (scopeStart && !scopeStart.inViewportRegion()) { // scopeStart could be null when comment has no scope
              scopeStart.scrollIntoView(true) ;
              // Since scrollIntoView scroll the embed ifram *and* the parent window
              // restore the position of the toolbar
              if (parent)
                parent.document.getElementById('outer-north').scrollIntoView(true) ;
            }
          }
        }
        
        gIComments.setPosition([gConf['iCommentLeftPadding'], topY]) ;
  
        gIComments.show() ;
      }}) ;
  },
  
  _animateTo : function(topY) {
    this._q.add({fn:function() {
            gIComments.setAnimationToPositions(topY) ;
            }},
          {id:"animationRun", autoContinue:false, fn:CY.bind(gIComments.runAnimations, gIComments)}
              ) ;
  },
  
  _animateToAndFocus : function(topY, focusCommentId, reply) {
    this._q.add({fn:function() {
            gIComments.setAnimationToPositionsAndFocus(topY, focusCommentId, reply) ;
            }},
          {id:"animationRun", autoContinue:false, fn:CY.bind(gIComments.runAnimations, gIComments)}
              ) ;
  },
  
  _animateToTop : function() {
    var topPos = gIComments.getTopPosition() ;
    if (topPos != null)
      this._animateTo(topPos[1]) ;
  },
  
  animateToTop : function() {
    this._q.add({fn:CY.bind(this.setPreventClickOn, this)}) ;
    this._animateToTop() ;
    this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
    this._q.run();
  },
  
  showAllComments : function() {
    checkForOpenedDialog(null, function() {
      gShowingAllComments = true ;
      var allTopComments = CY.Array.map(gDb.comments, function(c){return c.id;}) ;
      // Reorder if by scope.
      if (parent.$("#browse_by").val() == 'scope') {
        allTopComments.sort(function (a,b) {
          if (gDb.ordered_comment_ids['scope'].indexOf(a) < gDb.ordered_comment_ids['scope'].indexOf(b))
            return -1;
          if (gDb.ordered_comment_ids['scope'].indexOf(a) > gDb.ordered_comment_ids['scope'].indexOf(b))
            return 1
          return 0
		    });
      }
      // GIB: go down the 'add comment' icon
      this.showComments(allTopComments, [0,30], true) ;
    }, this, null) ;
  },

  showScopeRemovedComments : function() {
    checkForOpenedDialog(null, function() {
      gShowingAllComments = true ;
      var scopeRemovedComments = CY.Array.filter(gDb.comments, function(comment) { return (comment.start_wrapper == -1) ; }) ;
      var scopeRemovedCommentIds = CY.Array.map(scopeRemovedComments, function(c){return c.id;}) ;
      // Reorder if by scope.
      if (parent.$("#browse_by").val() == 'scope') {
        scopeRemovedCommentIds.sort(function (a,b) {
          if (gDb.ordered_comment_ids['scope'].indexOf(a) < gDb.ordered_comment_ids['scope'].indexOf(b))
            return -1;
          if (gDb.ordered_comment_ids['scope'].indexOf(a) > gDb.ordered_comment_ids['scope'].indexOf(b))
            return 1
          return 0
		    });
      }
      // GIB: go down the 'add comment' icon
      this.showComments(scopeRemovedCommentIds, [0,30], true) ;
      
    }, this, null) ;
  },

  showComments : function(commentDbIds, mouseXY, atDocumentTop) {
    checkForOpenedDialog(null, function() {
      this._q.add({fn:CY.bind(this.setPreventClickOn, this)}) ;
      this._showComments(commentDbIds, mouseXY[1], atDocumentTop) ;
      this._animateTo(mouseXY[1]) ;
      this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
      this._q.run();
    }, this, null) ;
  },

  openComment : function(iComment) { 
    this._q.add({fn:CY.bind(this.setPreventClickOn, this)}) ;

    var y = gIComments.getTopPosition()[1] ;
    this._q.add({fn:function() {
      gIComments.open(iComment.commentId) ;
        gIComments.refresh(iComment.commentId) ;
    }}) ;
    this._animateTo(y) ;
    
    this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
    this._q.run();
  },
  
  closeComment : function(iComment) { 
    checkForOpenedDialog(iComment, function() {
      this._q.add({fn:CY.bind(this.setPreventClickOn, this)}) ;
  
      var y = gIComments.getTopPosition()[1] ;
      this._q.add({fn:function() {
        var comment = gDb.getComment(iComment.commentId) ;
        gIComments.close(iComment.commentId) ;
          if (comment.reply_to_id != null)
            gIComments.refresh(comment.reply_to_id) ;
      }}) ;
      this._animateTo(y) ;
  
      this._q.add({fn:CY.bind(this.setPreventClickOff, this)}) ;
      this._q.run() ;
    }, this, null) ;
  },
  
  activate : function(iComment) {
    gIComments.activate(iComment.commentId) ;
  }
}
      
readyForAction = function () {
  return !gSync._iPreventClick ;
};
