/**
  * Get gap analysis html
  *
  * @param
  * @return
  */
 function getGapAnalysisHTML($a_user_id = 0, $a_skills = null)
 {
     global $ilUser, $lng;
     //		$this->setTabs("list_skills");
     if ($a_user_id == 0) {
         $user_id = $ilUser->getId();
     } else {
         $user_id = $a_user_id;
     }
     $skills = array();
     if ($this->getProfileId() > 0) {
         $profile = new ilSkillProfile($this->getProfileId());
         $this->profile_levels = $profile->getSkillLevels();
         foreach ($this->profile_levels as $l) {
             $skills[] = array("base_skill_id" => $l["base_skill_id"], "tref_id" => $l["tref_id"], "level_id" => $l["level_id"]);
         }
     } else {
         if (is_array($a_skills)) {
             $skills = $a_skills;
         }
     }
     // get actual levels for gap analysis
     $this->actual_levels = array();
     include_once "./Services/Skill/classes/class.ilBasicSkill.php";
     foreach ($skills as $sk) {
         $bs = new ilBasicSkill($sk["base_skill_id"]);
         if ($this->gap_mode == "max_per_type") {
             $max = $bs->getMaxLevelPerType($sk["tref_id"], $this->gap_mode_type, $user_id);
             $this->actual_levels[$sk["base_skill_id"]][$sk["tref_id"]] = $max;
         } else {
             if ($this->gap_mode == "max_per_object") {
                 $max = $bs->getMaxLevelPerObject($sk["tref_id"], $this->gap_mode_obj_id, $user_id);
                 $this->actual_levels[$sk["base_skill_id"]][$sk["tref_id"]] = $max;
             }
         }
     }
     $incl_self_eval = false;
     if (count($this->getGapAnalysisSelfEvalLevels() > 0)) {
         $incl_self_eval = true;
         $self_vals = $this->getGapAnalysisSelfEvalLevels();
     }
     // output spider stuff
     if (count($skills) >= 3) {
         $max_cnt = 0;
         $leg_labels = array();
         //var_dump($this->profile_levels);
         //foreach ($this->profile_levels as $k => $l)
         // write target, actual and self counter to skill array
         foreach ($skills as $k => $l) {
             //$bs = new ilBasicSkill($l["base_skill_id"]);
             $bs = new ilBasicSkill($l["base_skill_id"]);
             $leg_labels[] = $bs->getTitle();
             $levels = $bs->getLevelData();
             $cnt = 0;
             foreach ($levels as $lv) {
                 $cnt++;
                 if ($l["level_id"] == $lv["id"]) {
                     $skills[$k]["target_cnt"] = $cnt;
                 }
                 if ($this->actual_levels[$l["base_skill_id"]][$l["tref_id"]] == $lv["id"]) {
                     $skills[$k]["actual_cnt"] = $cnt;
                 }
                 if ($incl_self_eval) {
                     if ($self_vals[$l["base_skill_id"]][$l["tref_id"]] == $lv["id"]) {
                         $skills[$k]["self_cnt"] = $cnt;
                     }
                 }
                 $max_cnt = max($max_cnt, $cnt);
             }
         }
         //			$leg_labels = array("AAAAA", "BBBBB", "CCCCC");
         //var_dump($this->profile_levels);
         //var_dump($this->actual_levels);
         include_once "./Services/Chart/classes/class.ilChart.php";
         $chart = new ilChart("gap_chart", 600, 300);
         $chart->setYAxisMax($max_cnt);
         $chart->setLegLabels($leg_labels);
         // target level
         $cd = new ilChartData("spider");
         $cd->setLabel($lng->txt("skmg_target_level"));
         $cd->setFill("true", "#A0A0A0");
         // other users
         $cd2 = new ilChartData("spider");
         if ($this->gap_cat_title != "") {
             $cd2->setLabel($this->gap_cat_title);
         } else {
             if ($this->gap_mode == "max_per_type") {
                 $cd2->setLabel($lng->txt("objs_" . $this->gap_mode_type));
             } else {
                 if ($this->gap_mode == "max_per_object") {
                     $cd2->setLabel(ilObject::_lookupTitle($this->gap_mode_obj_id));
                 }
             }
         }
         $cd2->setFill("true", "#8080FF");
         // self evaluation
         if ($incl_self_eval) {
             $cd3 = new ilChartData("spider");
             $cd3->setLabel($lng->txt("skmg_self_evaluation"));
             $cd3->setFill("true", "#FF8080");
         }
         // fill in data
         $cnt = 0;
         foreach ($skills as $pl) {
             $cd->addPoint($cnt, (int) $pl["target_cnt"]);
             $cd2->addPoint($cnt, (int) $pl["actual_cnt"]);
             if ($incl_self_eval) {
                 $cd3->addPoint($cnt, (int) $pl["self_cnt"]);
             }
             $cnt++;
         }
         // add data to chart
         if ($this->getProfileId() > 0) {
             $chart->addData($cd);
         }
         $chart->addData($cd2);
         if ($incl_self_eval && count($this->getGapAnalysisSelfEvalLevels()) > 0) {
             $chart->addData($cd3);
         }
         $lg = new ilChartLegend();
         $chart->setLegend($lg);
         $chart_html = $chart->getHTML();
     }
     $stree = new ilSkillTree();
     $html = "";
     foreach ($skills as $s) {
         $path = $stree->getSkillTreePath($s["base_skill_id"]);
         // check draft
         foreach ($path as $p) {
             if ($p["draft"]) {
                 continue 2;
             }
         }
         $html .= $this->getSkillHTML($s["base_skill_id"], $user_id, false, $s["tref_id"]);
     }
     // list skills
     //		include_once("./Services/Skill/classes/class.ilPersonalSkillTableGUI.php");
     //		$sktab = new ilPersonalSkillTableGUI($this, "listSkills");
     return $chart_html . $html;
 }