add node descriptions, clean up plan-node.ts

10 files changed, 157 insertions, 75 deletions

diff --git a/app/assets/css/styles.css b/app/assets/css/styles.css
index b2922c2..8528bb8 100644
--- a/app/assets/css/styles.css
+++ b/app/assets/css/styles.css
@@ -1,4 +1,4 @@
 html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font:inherit;font-size:100%;vertical-align:baseline}html{line-height:1}ol,ul{list-style:none}table{border-collapse:collapse;border-spacing:0}caption,th,td{text-align:left;font-weight:normal;vertical-align:middle}q,blockquote{quotes:none}q:before,q:after,blockquote:before,blockquote:after{content:"";content:none}a img{border:none}article,aside,details,figcaption,figure,footer,header,hgroup,main,menu,nav,section,summary{display:block}/*!
  *  Font Awesome 4.5.0 by @davegandy - http://fontawesome.io - @fontawesome
  *  License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
- */@font-face{font-family:'FontAwesome';src:url("../fonts/fontawesome-webfont.eot?v=4.5.0");src:url("../fonts/fontawesome-webfont.eot?#iefix&v=4.5.0") format("embedded-opentype"),url("../fonts/fontawesome-webfont.woff2?v=4.5.0") format("woff2"),url("../fonts/fontawesome-webfont.woff?v=4.5.0") format("woff"),url("../fonts/fontawesome-webfont.ttf?v=4.5.0") format("truetype"),url("../fonts/fontawesome-webfont.svg?v=4.5.0#fontawesomeregular") format("svg");font-weight:normal;font-style:normal}.fa{display:inline-block;font:normal normal normal 14px/1 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1)}.fa-flip-vertical{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=2);-webkit-transform:scale(1, -1);-ms-transform:scale(1, -1);transform:scale(1, -1)}:root .fa-rotate-90,:root .fa-rotate-180,:root .fa-rotate-270,:root .fa-flip-horizontal,:root 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ul::before{content:'';position:absolute;top:0;left:50%;border-left:2px solid #c4c4c4;height:12px;width:0}.plan ul li{float:left;text-align:center;list-style-type:none;position:relative;padding:12px 3px 0 3px;transition:all 0.5s}.plan ul li:before,.plan ul li:after{content:'';position:absolute;top:0;right:50%;border-top:2px solid #c4c4c4;width:50%;height:12px}.plan ul li:after{right:auto;left:50%;border-left:2px solid #c4c4c4}.plan ul li:only-child{padding-top:0}.plan ul li:only-child:after,.plan ul li:only-child:before{display:none}.plan ul li:first-child::before,.plan ul li:last-child::after{border:0 none}.plan ul li:last-child::before{border-right:2px solid #c4c4c4;border-radius:0 6px 0 0}.plan ul li:first-child::after{border-radius:6px 0 0 0}.plan ul li .plan-node:hover+ul::before{border-color:#00B5E2}.plan ul li .plan-node:hover+ul li::after,.plan ul li .plan-node:hover+ul li::before,.plan ul li .plan-node:hover+ul 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header{margin-bottom:6px;overflow:hidden;cursor:pointer}.plan-node header:hover{background-color:#f7f7f7}.plan-node header h4{font-size:13px;float:left;font-weight:600}.plan-node header .node-duration{float:right;margin-left:10px;font-size:13px}.plan-node .prop-list{float:left;text-align:left;overflow-wrap:break-word;word-wrap:break-word;word-break:break-all;margin-top:10px;margin-bottom:6px}.plan-node .relation-name{text-align:left}.plan-node .planner-estimate{float:left;clear:both;text-align:left;margin-top:6px;width:100%}.plan-node .tags{margin-top:6px;text-align:left}.plan-node .tags span{display:inline-block;background-color:#FB4418;color:#fff;font-size:10px;font-weight:600;margin-right:3px;padding:3px;border-radius:3px;line-height:1.1}.plan-node:hover{border-color:#00B5E2}.plan-node .node-description{text-align:left;font-style:italic;padding-top:10px;word-break:normal}.plan-node .node-description .node-type{font-weight:600;background-color:#00B5E2;color:#fff;padding:0 6px}.node-bar-container{float:left;height:5px;margin-top:6px;margin-left:auto;margin-right:auto;border:1px solid #dedede;border-radius:3px;color:#fff;background-color:#454545;position:relative}.node-bar-container .node-bar{height:100%;text-align:left;position:absolute;left:0;top:0}.node-bar-label{text-align:left;display:block}.expanded{width:400px}.menu{width:190px;height:200px;position:absolute;font-size:12px;top:115px;left:0;background-color:#777;box-shadow:1px 1px 2px 1px rgba(0,0,0,0.5);color:#fff;border-top-right-radius:3px;border-bottom-right-radius:3px;z-index:1}.menu header h3{padding-top:10px;margin-bottom:20px;font-size:16px;font-weight:600;line-height:2;text-align:right;padding-right:20px}.menu ul{margin-left:10px}.menu ul li{line-height:2.5}.menu-toggle{font-size:26px;float:left;padding-left:10px;line-height:2;cursor:pointer}.menu-hidden{width:50px;height:50px;border-top-right-radius:50%;border-bottom-right-radius:50%}.menu-hidden ul,.menu-hidden h3{visibility:hidden}.menu button{border:1px solid #fff;background-color:#544D4D;color:#fff;padding:2px;border-radius:3px}.page,.page-stretch{padding-top:10px;margin:auto;width:1000px;min-height:600px}.page h2,.page-stretch h2{font-size:26px;margin-bottom:6px}.page-stretch{margin:auto;width:95%}.page-stretch h2{text-align:left;font-size:17px;max-width:1000px;margin:auto}.page-stretch h2 .sub-title{font-size:13px;font-style:italic}.table{width:100%}.table td{border-bottom:1px solid #dedede;padding:6px}.table tr:hover{background-color:#f7f7f7}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1040;background-color:#000;opacity:0.7}.modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1050}.modal .modal-dialog{position:relative;transform:translate(0);margin:30px auto;width:500px;opacity:1}.modal .modal-dialog .modal-content{padding:30px;position:relative;background-color:#fff;background-clip:padding-box;border:1px solid #999;border:1px solid rgba(0,0,0,0.2);border-radius:6px;outline:0;box-shadow:0 3px 9px rgba(0,0,0,0.5);display:block}.modal .modal-dialog .modal-content .modal-body{padding:3px}.modal .modal-dialog .modal-content .modal-footer{text-align:right}.modal .modal-dialog .modal-content .modal-footer button{margin-left:3px}footer{border-top:2px solid #dedede;margin:20px;padding:20px;color:#ababab;text-align:center;width:600px;margin:auto}footer .fa{font-size:17px;margin-left:6px}.plan-query-container{border:1px solid #dedede;padding:18px;background-color:#fff;position:absolute;box-shadow:0px 0px 10px 2px rgba(0,0,0,0.3);border-radius:3px;margin-bottom:18px;z-index:4;left:0}.plan-query-container code{font-weight:300}.plan-query-container .plan-query-text{background-color:#fff;font-family:"source code pro";text-align:left}.plan-query-container .plan-query-text .code-key-item{background-color:#F8E400;font-weight:600;padding:1px}.plan-query-container h3{font-size:17px;width:93%;text-align:left;border-bottom:1px solid #dedede;padding-bottom:6px;margin-bottom:10px}.hljs,.hljs-subst{color:#4d525a}.hljs-keyword,.hljs-attribute,.hljs-selector-tag,.hljs-meta-keyword,.hljs-doctag,.hljs-name{color:#008CAF;font-weight:bold}.hljs-built_in,.hljs-literal,.hljs-bullet,.hljs-code,.hljs-addition{color:#008CAF;font-weight:bold}.hljs-regexp,.hljs-symbol,.hljs-variable,.hljs-template-variable,.hljs-link,.hljs-selector-attr,.hljs-selector-pseudo{color:#008CAF;font-weight:bold}.hljs-type,.hljs-string,.hljs-number,.hljs-selector-id,.hljs-selector-class,.hljs-quote,.hljs-template-tag,.hljs-deletion{color:#279404;font-weight:600}.hljs-title,.hljs-section{color:#008CAF;font-weight:bold}.hljs-comment{color:#999ea7;font-style:italic}.hljs-meta{color:#999ea7}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:600}
diff --git a/app/assets/sass/_common.scss b/app/assets/sass/_common.scss
index 5d38773..647e9d9 100644
--- a/app/assets/sass/_common.scss
+++ b/app/assets/sass/_common.scss
@@ -51,3 +51,9 @@ a {
 .clickable {
    cursor: pointer;
 }
+
+
+code {
+   font-family: $font-family-mono;
+   font-weight: 600;
+}
diff --git a/app/assets/sass/_highlight.scss b/app/assets/sass/_highlight.scss
index 1ade2d7..08009db 100644
--- a/app/assets/sass/_highlight.scss
+++ b/app/assets/sass/_highlight.scss
@@ -9,6 +9,10 @@
    z-index: 4;
    left: 0;
 
+   code {
+      font-weight: 300;
+   }
+   
    .plan-query-text {
       background-color: #fff;
       font-family: $font-family-mono;
diff --git a/app/assets/sass/_plan-node.scss b/app/assets/sass/_plan-node.scss
index e1ebaa9..0ac65ea 100644
--- a/app/assets/sass/_plan-node.scss
+++ b/app/assets/sass/_plan-node.scss
@@ -41,7 +41,6 @@
    .prop-list {
       float: left;
       text-align: left;
-      width: 400px;
       overflow-wrap: break-word;
       word-wrap: break-word;
       word-break: break-all;
@@ -51,7 +50,6 @@
 
    .relation-name {
      text-align: left;
-     max-width: 220px;
    }
 
    .planner-estimate {
@@ -83,6 +81,20 @@
    &:hover {
      border-color: $highlight-color;
    }
+
+   .node-description {
+      text-align: left;
+      font-style: italic;
+      padding-top: $padding-lg;
+      word-break: normal;
+
+      .node-type {
+         font-weight: 600;
+         background-color: $blue;
+         color: #fff;
+         padding: 0 $padding-base;
+      }
+   }
 }
 
 .node-bar-container {
@@ -110,3 +122,7 @@
    text-align: left;
    display: block;
 }
+
+.expanded {
+   width: 400px;
+}
diff --git a/app/assets/styles.css b/app/assets/styles.css
index b2922c2..8528bb8 100644
--- a/app/assets/styles.css
+++ b/app/assets/styles.css
@@ -1,4 +1,4 @@
 html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font:inherit;font-size:100%;vertical-align:baseline}html{line-height:1}ol,ul{list-style:none}table{border-collapse:collapse;border-spacing:0}caption,th,td{text-align:left;font-weight:normal;vertical-align:middle}q,blockquote{quotes:none}q:before,q:after,blockquote:before,blockquote:after{content:"";content:none}a img{border:none}article,aside,details,figcaption,figure,footer,header,hgroup,main,menu,nav,section,summary{display:block}/*!
  *  Font Awesome 4.5.0 by @davegandy - http://fontawesome.io - @fontawesome
  *  License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
- */@font-face{font-family:'FontAwesome';src:url("../fonts/fontawesome-webfont.eot?v=4.5.0");src:url("../fonts/fontawesome-webfont.eot?#iefix&v=4.5.0") format("embedded-opentype"),url("../fonts/fontawesome-webfont.woff2?v=4.5.0") format("woff2"),url("../fonts/fontawesome-webfont.woff?v=4.5.0") format("woff"),url("../fonts/fontawesome-webfont.ttf?v=4.5.0") format("truetype"),url("../fonts/fontawesome-webfont.svg?v=4.5.0#fontawesomeregular") format("svg");font-weight:normal;font-style:normal}.fa{display:inline-block;font:normal normal normal 14px/1 FontAwesome;font-size:inherit;text-rendering:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.fa-lg{font-size:1.33333em;line-height:0.75em;vertical-align:-15%}.fa-2x{font-size:2em}.fa-3x{font-size:3em}.fa-4x{font-size:4em}.fa-5x{font-size:5em}.fa-fw{width:1.28571em;text-align:center}.fa-ul{padding-left:0;margin-left:2.14286em;list-style-type:none}.fa-ul>li{position:relative}.fa-li{position:absolute;left:-2.14286em;width:2.14286em;top:0.14286em;text-align:center}.fa-li.fa-lg{left:-1.85714em}.fa-border{padding:.2em .25em .15em;border:solid 0.08em #eee;border-radius:.1em}.fa-pull-left{float:left}.fa-pull-right{float:right}.fa.fa-pull-left{margin-right:.3em}.fa.fa-pull-right{margin-left:.3em}.pull-right{float:right}.pull-left{float:left}.fa.pull-left{margin-right:.3em}.fa.pull-right{margin-left:.3em}.fa-spin{-webkit-animation:fa-spin 2s infinite linear;animation:fa-spin 2s infinite linear}.fa-pulse{-webkit-animation:fa-spin 1s infinite steps(8);animation:fa-spin 1s infinite steps(8)}@-webkit-keyframes fa-spin{0%{-webkit-transform:rotate(0deg);transform:rotate(0deg)}100%{-webkit-transform:rotate(359deg);transform:rotate(359deg)}}@keyframes fa-spin{0%{-webkit-transform:rotate(0deg);transform:rotate(0deg)}100%{-webkit-transform:rotate(359deg);transform:rotate(359deg)}}.fa-rotate-90{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=1);-webkit-transform:rotate(90deg);-ms-transform:rotate(90deg);transform:rotate(90deg)}.fa-rotate-180{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=2);-webkit-transform:rotate(180deg);-ms-transform:rotate(180deg);transform:rotate(180deg)}.fa-rotate-270{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=3);-webkit-transform:rotate(270deg);-ms-transform:rotate(270deg);transform:rotate(270deg)}.fa-flip-horizontal{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=0);-webkit-transform:scale(-1, 1);-ms-transform:scale(-1, 1);transform:scale(-1, 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ul::before{content:'';position:absolute;top:0;left:50%;border-left:2px solid #c4c4c4;height:12px;width:0}.plan ul li{float:left;text-align:center;list-style-type:none;position:relative;padding:12px 3px 0 3px;transition:all 0.5s}.plan ul li:before,.plan ul li:after{content:'';position:absolute;top:0;right:50%;border-top:2px solid #c4c4c4;width:50%;height:12px}.plan ul li:after{right:auto;left:50%;border-left:2px solid #c4c4c4}.plan ul li:only-child{padding-top:0}.plan ul li:only-child:after,.plan ul li:only-child:before{display:none}.plan ul li:first-child::before,.plan ul li:last-child::after{border:0 none}.plan ul li:last-child::before{border-right:2px solid #c4c4c4;border-radius:0 6px 0 0}.plan ul li:first-child::after{border-radius:6px 0 0 0}.plan ul li .plan-node:hover+ul::before{border-color:#00B5E2}.plan ul li .plan-node:hover+ul li::after,.plan ul li .plan-node:hover+ul li::before,.plan ul li .plan-node:hover+ul ul::before{border-color:#008CAF}.plan-stats{display:flex;font-size:13px;margin:0 auto 10px auto;padding-bottom:10px;border-bottom:1px solid #dedede;border-radius:12px;width:650px;position:relative}.plan-stats div{padding-right:10px;flex-grow:1}.plan-stats .stat-value{display:block;text-align:center;font-size:17px}.plan-stats .stat-label{display:block;text-align:center;font-size:12px}.plan-stats:after{content:'';position:absolute;top:100%;left:50%;margin-left:-9px;width:0;height:0;border-top:solid 9px #dedede;border-left:solid 9px transparent;border-right:solid 9px transparent}.plan-node{text-decoration:none;color:#4d525a;display:inline-block;transition:all 0.5s;position:relative;padding:6px 10px;background-color:#fff;font-size:12px;border:1px solid #dedede;margin-bottom:4px;border-radius:3px;overflow-wrap:break-word;word-wrap:break-word;word-break:break-all;min-width:220px;box-shadow:1px 1px 3px 0px rgba(0,0,0,0.1)}.plan-node header{margin-bottom:6px;overflow:hidden;cursor:pointer}.plan-node header:hover{background-color:#f7f7f7}.plan-node header h4{font-size:13px;float:left;font-weight:600}.plan-node header .node-duration{float:right;margin-left:10px;font-size:13px}.plan-node .prop-list{float:left;text-align:left;overflow-wrap:break-word;word-wrap:break-word;word-break:break-all;margin-top:10px;margin-bottom:6px}.plan-node .relation-name{text-align:left}.plan-node .planner-estimate{float:left;clear:both;text-align:left;margin-top:6px;width:100%}.plan-node .tags{margin-top:6px;text-align:left}.plan-node .tags span{display:inline-block;background-color:#FB4418;color:#fff;font-size:10px;font-weight:600;margin-right:3px;padding:3px;border-radius:3px;line-height:1.1}.plan-node:hover{border-color:#00B5E2}.plan-node .node-description{text-align:left;font-style:italic;padding-top:10px;word-break:normal}.plan-node .node-description .node-type{font-weight:600;background-color:#00B5E2;color:#fff;padding:0 6px}.node-bar-container{float:left;height:5px;margin-top:6px;margin-left:auto;margin-right:auto;border:1px solid #dedede;border-radius:3px;color:#fff;background-color:#454545;position:relative}.node-bar-container .node-bar{height:100%;text-align:left;position:absolute;left:0;top:0}.node-bar-label{text-align:left;display:block}.expanded{width:400px}.menu{width:190px;height:200px;position:absolute;font-size:12px;top:115px;left:0;background-color:#777;box-shadow:1px 1px 2px 1px rgba(0,0,0,0.5);color:#fff;border-top-right-radius:3px;border-bottom-right-radius:3px;z-index:1}.menu header h3{padding-top:10px;margin-bottom:20px;font-size:16px;font-weight:600;line-height:2;text-align:right;padding-right:20px}.menu ul{margin-left:10px}.menu ul li{line-height:2.5}.menu-toggle{font-size:26px;float:left;padding-left:10px;line-height:2;cursor:pointer}.menu-hidden{width:50px;height:50px;border-top-right-radius:50%;border-bottom-right-radius:50%}.menu-hidden ul,.menu-hidden h3{visibility:hidden}.menu button{border:1px solid #fff;background-color:#544D4D;color:#fff;padding:2px;border-radius:3px}.page,.page-stretch{padding-top:10px;margin:auto;width:1000px;min-height:600px}.page h2,.page-stretch h2{font-size:26px;margin-bottom:6px}.page-stretch{margin:auto;width:95%}.page-stretch h2{text-align:left;font-size:17px;max-width:1000px;margin:auto}.page-stretch h2 .sub-title{font-size:13px;font-style:italic}.table{width:100%}.table td{border-bottom:1px solid #dedede;padding:6px}.table tr:hover{background-color:#f7f7f7}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1040;background-color:#000;opacity:0.7}.modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1050}.modal .modal-dialog{position:relative;transform:translate(0);margin:30px auto;width:500px;opacity:1}.modal .modal-dialog .modal-content{padding:30px;position:relative;background-color:#fff;background-clip:padding-box;border:1px solid #999;border:1px solid rgba(0,0,0,0.2);border-radius:6px;outline:0;box-shadow:0 3px 9px rgba(0,0,0,0.5);display:block}.modal .modal-dialog .modal-content .modal-body{padding:3px}.modal .modal-dialog .modal-content .modal-footer{text-align:right}.modal .modal-dialog .modal-content .modal-footer button{margin-left:3px}footer{border-top:2px solid #dedede;margin:20px;padding:20px;color:#ababab;text-align:center;width:600px;margin:auto}footer .fa{font-size:17px;margin-left:6px}.plan-query-container{border:1px solid #dedede;padding:18px;background-color:#fff;position:absolute;box-shadow:0px 0px 10px 2px rgba(0,0,0,0.3);border-radius:3px;margin-bottom:18px;z-index:4;left:0}.plan-query-container code{font-weight:300}.plan-query-container .plan-query-text{background-color:#fff;font-family:"source code pro";text-align:left}.plan-query-container .plan-query-text .code-key-item{background-color:#F8E400;font-weight:600;padding:1px}.plan-query-container h3{font-size:17px;width:93%;text-align:left;border-bottom:1px solid #dedede;padding-bottom:6px;margin-bottom:10px}.hljs,.hljs-subst{color:#4d525a}.hljs-keyword,.hljs-attribute,.hljs-selector-tag,.hljs-meta-keyword,.hljs-doctag,.hljs-name{color:#008CAF;font-weight:bold}.hljs-built_in,.hljs-literal,.hljs-bullet,.hljs-code,.hljs-addition{color:#008CAF;font-weight:bold}.hljs-regexp,.hljs-symbol,.hljs-variable,.hljs-template-variable,.hljs-link,.hljs-selector-attr,.hljs-selector-pseudo{color:#008CAF;font-weight:bold}.hljs-type,.hljs-string,.hljs-number,.hljs-selector-id,.hljs-selector-class,.hljs-quote,.hljs-template-tag,.hljs-deletion{color:#279404;font-weight:600}.hljs-title,.hljs-section{color:#008CAF;font-weight:bold}.hljs-comment{color:#999ea7;font-style:italic}.hljs-meta{color:#999ea7}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:600}
diff --git a/app/components/plan-node/plan-node.html b/app/components/plan-node/plan-node.html
index ddf6722..08a7a96 100644
--- a/app/components/plan-node/plan-node.html
+++ b/app/components/plan-node/plan-node.html
@@ -1,26 +1,30 @@
-<div class="plan-node">
+<div class="plan-node" [class.expanded]="showDetails">
    <header (click)="showDetails = !showDetails">
-      <h4>{{node['Node Type'] | uppercase}}
+      <h4>{{node[_planService.NODE_TYPE_PROP] | uppercase}}
       </h4>
       <span class="node-duration">{{duration}}<span class="text-muted">{{durationUnit}} | </span>
       <strong>{{executionTimePercent}}</strong><span class="text-muted">%</span>
       </span>
    </header>
 
-   <div class="relation-name" *ngIf="node['Relation Name']">
+   <div class="relation-name" *ngIf="node[_planService.RELATION_NAME_PROP]">
       <button *ngIf="plan.formattedQuery" class="btn btn-sm btn-default btn-slim pull-right" (click)="showQuery = !showQuery">
          <i class="fa fa-database"></i>
       </button>
 
       <span class="text-muted">on </span>
-      <span *ngIf="node['Schema']">{{node['Schema']}}.</span>{{node['Relation Name']}}
-      <span *ngIf="node['Alias']"> ({{node['Alias']}})</span>
+      <span *ngIf="node[_planService.SCHEMA_PROP]">{{node[_planService.SCHEMA_PROP]}}.</span>{{node[_planService.RELATION_NAME_PROP]}}
+      <span *ngIf="node[_planService.ALIAS_PROP]"> ({{node[_planService.ALIAS_PROP]}})</span>
    </div>
 
-   <div class="relation-name" *ngIf="node['Group Key']"><span class="text-muted">by</span> {{node['Group Key']}}</div>
-   <div class="relation-name" *ngIf="node['Sort Key']"><span class="text-muted">by</span> {{node['Sort Key']}}</div>
-   <div class="relation-name" *ngIf="node['Join Type']">{{node['Join Type']}} <span class="text-muted">join</span></div>
-   <div class="relation-name" *ngIf="node['Index Name']"><span class="text-muted">using</span> {{node['Index Name']}}</div>
+   <div class="relation-name" *ngIf="node[_planService.GROUP_KEY_PROP]">
+      <span class="text-muted">by</span> {{node[_planService.GROUP_KEY_PROP]}}</div>
+   <div class="relation-name" *ngIf="node[_planService.SORT_KEY_PROP]">
+      <span class="text-muted">by</span> {{node[_planService.SORT_KEY_PROP]}}</div>
+   <div class="relation-name" *ngIf="node[_planService.JOIN_TYPE_PROP]">{{node[_planService.JOIN_TYPE_PROP]}}
+      <span class="text-muted">join</span></div>
+   <div class="relation-name" *ngIf="node[_planService.INDEX_NAME_PROP]"><span class="text-muted">
+      using</span> {{node[_planService.INDEX_NAME_PROP]}}</div>
 
    <div class="tags" *ngIf="viewOptions.showTags && tags.length > 0">
       <span *ngFor="#tag of tags">{{tag}}</span>
@@ -41,12 +45,18 @@
       <span> by <strong>{{plannerRowEstimateValue}}</strong>x</span>
    </div>
 
-   <table  *ngIf="showDetails" class="table prop-list">
-      <tr *ngFor="#prop of props">
-         <td width="40%">{{prop.key}}</td>
-         <td>{{prop.value}}</td>
-      <tr>
-   </table>
+   <div *ngIf="showDetails">
+      <div *ngIf="getNodeTypeDescription()" class="node-description">
+         <span class="node-type">{{node[_planService.NODE_TYPE_PROP]}} Node</span> <span [innerHtml]="getNodeTypeDescription()"></span>
+      </div>
+
+      <table class="table prop-list">
+         <tr *ngFor="#prop of props">
+            <td width="40%">{{prop.key}}</td>
+            <td>{{prop.value}}</td>
+         <tr>
+      </table>
+   </div>
 
    <div *ngIf="showQuery" class="plan-query-container">
       <button class="btn btn-close pull-right" (click)="showQuery = false">
diff --git a/app/components/plan-node/plan-node.ts b/app/components/plan-node/plan-node.ts
index 8aaab2c..fc865b8 100644
--- a/app/components/plan-node/plan-node.ts
+++ b/app/components/plan-node/plan-node.ts
@@ -1,8 +1,12 @@
 import {IPlan} from '../../interfaces/iplan';
 import {Component, OnInit} from 'angular2/core';
 import {HighlightType, EstimateDirection} from '../../enums';
+
 import {PlanService} from '../../services/plan-service';
 import {SyntaxHighlightService} from '../../services/syntax-highlight-service';
+import {HelpService} from '../../services/help-service';
+import {ColorService} from '../../services/color-service';
+
 /// <reference path="lodash.d.ts" />
 
 @Component({
@@ -10,7 +14,7 @@ import {SyntaxHighlightService} from '../../services/syntax-highlight-service';
     inputs: ['plan', 'node', 'viewOptions'],
     templateUrl: './components/plan-node/plan-node.html',
     directives: [PlanNode],
-    providers: [PlanService, SyntaxHighlightService]
+    providers: [PlanService, SyntaxHighlightService, HelpService, ColorService]
 })
 
 export class PlanNode {
@@ -44,7 +48,11 @@ export class PlanNode {
     estimateDirections = EstimateDirection;
     highlightTypes = HighlightType;
 
-    constructor(private _planService: PlanService, private _syntaxHighlightService: SyntaxHighlightService) { }
+    constructor(private _planService: PlanService,
+      private _syntaxHighlightService: SyntaxHighlightService,
+      private _helpService: HelpService,
+      private _colorService: ColorService)
+      {}
 
     ngOnInit() {
         this.currentHighlightType = this.viewOptions.highlightType;
@@ -67,9 +75,9 @@ export class PlanNode {
 
     getFormattedQuery() {
       var keyItems: Array<string> = [];
-      keyItems.push(this.node['Schema'] + '.' + this.node['Relation Name']);
-      keyItems.push(' ' + this.node['Relation Name'] + ' ');
-      keyItems.push(' ' + this.node['Alias'] + ' ');
+      keyItems.push(this.node[this._planService.SCHEMA_PROP] + '.' + this.node[this._planService.RELATION_NAME_PROP]);
+      keyItems.push(' ' + this.node[this._planService.RELATION_NAME_PROP] + ' ');
+      keyItems.push(' ' + this.node[this._planService.ALIAS_PROP] + ' ');
       return this._syntaxHighlightService.highlightKeyItems(this.plan.formattedQuery, keyItems);
     }
 
@@ -90,7 +98,7 @@ export class PlanNode {
         }
 
         if (this.width < 1) { this.width = 1 }
-        this.backgroundColor = this.numberToColorHsl(1 - this.width / this.MAX_WIDTH);
+        this.backgroundColor = this._colorService.numberToColorHsl(1 - this.width / this.MAX_WIDTH);
     }
 
     calculateDuration() {
@@ -112,7 +120,7 @@ export class PlanNode {
     // create an array of node propeties so that they can be displayed in the view
     calculateProps() {
         this.props = _.chain(this.node)
-            .omit('Plans')
+            .omit(this._planService.PLANS_PROP)
             .map((value, key) => {
                 return { key: key, value: value };
             })
@@ -135,52 +143,7 @@ export class PlanNode {
         }
     }
 
-    /**
-     * http://stackoverflow.com/questions/2353211/hsl-to-rgb-color-conversion
-     *
-     * Converts an HSL color value to RGB. Conversion formula
-     * adapted from http://en.wikipedia.org/wiki/HSL_color_space.
-     * Assumes h, s, and l are contained in the set [0, 1] and
-     * returns r, g, and b in the set [0, 255].
-     *
-     * @param   Number  h       The hue
-     * @param   Number  s       The saturation
-     * @param   Number  l       The lightness
-     * @return  Array           The RGB representation
-     */
-    hslToRgb(h, s, l) {
-        var r, g, b;
-
-        if (s == 0) {
-            r = g = b = l; // achromatic
-        } else {
-            function hue2rgb(p, q, t) {
-                if (t < 0) t += 1;
-                if (t > 1) t -= 1;
-                if (t < 1 / 6) return p + (q - p) * 6 * t;
-                if (t < 1 / 2) return q;
-                if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
-                return p;
-            }
-
-            var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
-            var p = 2 * l - q;
-            r = hue2rgb(p, q, h + 1 / 3);
-            g = hue2rgb(p, q, h);
-            b = hue2rgb(p, q, h - 1 / 3);
-        }
-
-        return [Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)];
-    }
-
-    // convert a number to a color using hsl
-    numberToColorHsl(i) {
-        // as the function expects a value between 0 and 1, and red = 0° and green = 120°
-        // we convert the input to the appropriate hue value
-        var hue = i * 100 * 1.2 / 360;
-        // we convert hsl to rgb (saturation 100%, lightness 50%)
-        var rgb = this.hslToRgb(hue, .9, .4);
-        // we format to css value and return
-        return 'rgb(' + rgb[0] + ',' + rgb[1] + ',' + rgb[2] + ')';
-    }
+    getNodeTypeDescription() {
+      return this._helpService.getNodeTypeDescription(this.node[this._planService.NODE_TYPE_PROP]);
+   }
 }
diff --git a/app/services/color-service.ts b/app/services/color-service.ts
new file mode 100644
index 0000000..37183c0
--- /dev/null
+++ b/app/services/color-service.ts
@@ -0,0 +1,50 @@
+export class ColorService {
+       /**
+        * http://stackoverflow.com/questions/2353211/hsl-to-rgb-color-conversion
+        *
+        * Converts an HSL color value to RGB. Conversion formula
+        * adapted from http://en.wikipedia.org/wiki/HSL_color_space.
+        * Assumes h, s, and l are contained in the set [0, 1] and
+        * returns r, g, and b in the set [0, 255].
+        *
+        * @param   Number  h       The hue
+        * @param   Number  s       The saturation
+        * @param   Number  l       The lightness
+        * @return  Array           The RGB representation
+        */
+       hslToRgb(h, s, l) {
+           var r, g, b;
+
+           if (s == 0) {
+               r = g = b = l; // achromatic
+           } else {
+               function hue2rgb(p, q, t) {
+                   if (t < 0) t += 1;
+                   if (t > 1) t -= 1;
+                   if (t < 1 / 6) return p + (q - p) * 6 * t;
+                   if (t < 1 / 2) return q;
+                   if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
+                   return p;
+               }
+
+               var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+               var p = 2 * l - q;
+               r = hue2rgb(p, q, h + 1 / 3);
+               g = hue2rgb(p, q, h);
+               b = hue2rgb(p, q, h - 1 / 3);
+           }
+
+           return [Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)];
+       }
+
+       // convert a number to a color using hsl
+       numberToColorHsl(i) {
+           // as the function expects a value between 0 and 1, and red = 0° and green = 120°
+           // we convert the input to the appropriate hue value
+           var hue = i * 100 * 1.2 / 360;
+           // we convert hsl to rgb (saturation 100%, lightness 50%)
+           var rgb = this.hslToRgb(hue, .9, .4);
+           // we format to css value and return
+           return 'rgb(' + rgb[0] + ',' + rgb[1] + ',' + rgb[2] + ')';
+       }
+}
diff --git a/app/services/help-service.ts b/app/services/help-service.ts
new file mode 100644
index 0000000..11bb4c0
--- /dev/null
+++ b/app/services/help-service.ts
@@ -0,0 +1,27 @@
+/// <reference path="lodash.d.ts" />
+
+export class HelpService {
+   getNodeTypeDescription(nodeType: string) {
+      return NODE_DESCRIPTIONS[nodeType.toUpperCase()];
+   }
+}
+
+export var NODE_DESCRIPTIONS = {
+   "LIMIT":"returns a specified number of rows from a record set.",
+   "SORT": "sorts a record set based on the specified sort key.",
+   "NESTED LOOP": `merges two record sets by looping through every record in the first set and
+   tries to find a match in the second set. All matching records are returned.`,
+   "MERGE JOIN": `merges two record sets by first sorting them on a <strong>join key</strong>.`,
+   "AGGREGATE": `groups records together based on a GROUP BY or aggregate function (like <code>sum()</code>).`,
+   "HASHAGGREGATE": `groups records together based on a GROUP BY or aggregate function (like sum()). Hash Aggregate uses
+   a hash to first organize the records by a key.`,
+   "SEQ SCAN": `finds relevant records by sequentially scanning the table. Seq Scans perform a single read operation
+   (only the table is read).`,
+   "INDEX SCAN": `finds relevant records based on an <strong>Index</strong>. Index Scans perform 2 read operations: one to
+   read the index and another to read the actual value from the table.`,
+   "INDEX ONLY SCAN": `finds relevant records based on an <strong>Index</strong>. Index Only Scans perform a single read operation
+   from the index and do not read from the corresponding table.`,
+   "BITMAP HEAP SCAN": "scans all pages returned by the <strong>Bitmap Index Scan</strong> for relevant rows.",
+   "BITMAP INDEX SCAN": `uses a <strong>Bitmap Index</strong> (index which uses 1 bit per page) to find all relevant pages.
+   Results of this node are fed to the <strong>Bitmap Heap Scan</strong>.`
+}
diff --git a/app/services/plan-service.ts b/app/services/plan-service.ts
index 5d7dc3c..2e56bac 100644
--- a/app/services/plan-service.ts
+++ b/app/services/plan-service.ts
@@ -12,7 +12,13 @@ export class PlanService {
     ACTUAL_LOOPS_PROP: string = 'Actual Loops';
     TOTAL_COST_PROP: string = 'Total Cost';
     PLANS_PROP: string = 'Plans';
-
+    RELATION_NAME_PROP: string = 'Relation Name';
+    SCHEMA_PROP: string = 'Schema';
+    ALIAS_PROP: string = 'Alias';
+    GROUP_KEY_PROP: string = 'Group Key';
+    SORT_KEY_PROP: string = 'Sort Key';
+    JOIN_TYPE_PROP: string = 'Join Type';
+    INDEX_NAME_PROP: string = 'Index Name';
 
     // computed by pev
     COMPUTED_TAGS_PROP: string = "*Tags";