fix setting cursor when clicked

cursor should not be set when dragging (pan)

client/jsFiles/SEAWebClientGraphics.js

@@ -395,9 +395,11 @@ function loadCurvesSettingsPopup(){
 let graphs = (function (){
     let dataset_to_graph_map = {}; // a dictionnary mapping a variable name to a two values array, containing its graph index and its position inside the graph
     let blocks, liveMode=true, top_vars=[], bottom_vars=[];
-    let legendFlag = false, currentZoomMode = isTouchDevice ? 'xy' : 'x';
+    let legendFlag = false;
+    let currentZoomMode = isTouchDevice ? 'xy' : 'x';
     let prevTime = null, prevMin = null, prevMax = null, prevGraph = null; // zoom speed limitation
     let cursorLinePos = null; // the position of the cursor line (given by its x value)
+    let clickMode = 0;  // 1: mouse is down, 2: pan is active, 0: after mouse down
 
     let type = 'linear'; // type of graphs axis to display
 
@@ -701,9 +703,13 @@ let graphs = (function (){
             legendFlag = true;
             let trect = evt.target.getBoundingClientRect();
             let X = evt.clientX - trect.x, Y = evt.clientY - trect.y;
+            if (X == cursorLinePos) {
+               cursorLine(null);
+            } else {
                menuGraphicsPopup.hide();
                showLegends(true, false);
                cursorLine(X);
+            }
             setLiveMode();
             update();
             for (let gr of graph_array.slice(0, ngraphs)) {
@@ -714,7 +720,18 @@ let graphs = (function (){
             }
         }
     }
-    container.addEventListener('click', clickHandler)
+    function mouseDown(evt) {
+        clickMode = 1;
+    }
+    function mouseUp(evt) {
+        if (clickMode == 1) {  // mouse was down, but no pan happend
+            clickHandler(evt);
+        }
+        clickMode = 0;
+    }
+    // container.addEventListener('click', clickHandler)
+    container.addEventListener('mousedown', mouseDown);
+    container.addEventListener('mouseup', mouseUp);
 
     /**
      * Sets (overwrite) the data (curve) of the given variable
@@ -926,6 +943,7 @@ let graphs = (function (){
     function panCallback(graph){
         let ax = graph.chart.options.scales.x;
         let xmin = ax.min, xmax = ax.max;
+        clickMode = 2; // mouse pan mode
         if (liveMode && xmax < lastTime) setLiveMode(false);
         setMinMax(xmin,xmax);
         update();