From 8e7340b171d0e801398511eee499d71d1734e2a6 Mon Sep 17 00:00:00 2001
From: Laura Fuentes Grau <laurafuentesgrau@gmail.com>
Date: Sun, 29 Mar 2020 15:10:02 +0200
Subject: [PATCH] fix for PlotTable: PlotLegend now only created if signals are
 selected

---
 src/dashboard/dashboard.js       |  7 +------
 src/widget/widgets/plot-table.js | 21 +++++++++++++--------
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/src/dashboard/dashboard.js b/src/dashboard/dashboard.js
index df42e37..98c3d40 100644
--- a/src/dashboard/dashboard.js
+++ b/src/dashboard/dashboard.js
@@ -264,12 +264,7 @@ class Dashboard extends Component {
 
 
   deleteWidget(widget, index) {
-    /*const widgets = this.state.dashboard.get('widgets');
-    delete widgets[index];
-
-    const dashboard = this.state.dashboard.set('widgets');
-
-    this.setState({ dashboard });*/
+    
     AppDispatcher.dispatch({
       type: 'widgets/start-remove',
       data: widget,
diff --git a/src/widget/widgets/plot-table.js b/src/widget/widgets/plot-table.js
index 3e8e8f1..e16b7b1 100644
--- a/src/widget/widgets/plot-table.js
+++ b/src/widget/widgets/plot-table.js
@@ -92,14 +92,12 @@ class WidgetPlotTable extends Component {
 
   render() {
     let checkBoxes = [];
-
+    let icData = [];
+    let legendSignals = [];
     // Data passed to plot
-    if (this.props.config == null) {
-      return <div />;
-    }
+    if (this.props.config) {
 
     const ic = this.props.config.icID;
-    let icData = [];
 
     if (this.props.data[ic] != null && this.props.data[ic].output != null && this.props.data[ic].output.values != null) {
       icData = this.props.data[ic].output.values.filter((values, index) => (
@@ -121,7 +119,7 @@ class WidgetPlotTable extends Component {
     }
 
     // Prepare an array with the signals to show in the legend
-    var legendSignals = this.state.preselectedSignals.reduce( (accum, signal, i) => {
+    legendSignals = this.state.preselectedSignals.reduce( (accum, signal, i) => {
       if (this.state.signals.includes(signal.index)) {
         accum.push({
           index: signal.index,
@@ -130,7 +128,12 @@ class WidgetPlotTable extends Component {
         });
       }
       return accum;
-    }, []);
+    }, []);}
+
+    let showLegend = false;
+    if(legendSignals !== []){
+      showLegend = true;
+    }
 
     return (
       <div className="plot-table-widget" ref="wrapper">
@@ -159,7 +162,9 @@ class WidgetPlotTable extends Component {
               />
             </div>
           </div>
-          <PlotLegend signals={legendSignals} />
+          {showLegend? (
+          <PlotLegend signals={legendSignals} /> ) : (<div></div>)
+          }
         </div>
       </div>
     );