Add a getSelectionBarColor options to dynamically change the selection bar color.

Author: Valentin Hervieu

README.md

@@ -34,7 +34,7 @@ Make sure the report is accompanied by a reproducible demo. The ideal demo is cr
 
 ## Common issues
 ### My slider is not rendered correctly on load
-If the slider's parent element is not visible during slider initialization, the slider can't know when its parent becomes visible. 
+If the slider's parent element is not visible during slider initialization, the slider can't know when its parent becomes visible.
 For instance, when displaying a slider inside an element which visibility is toggled using ng-show, you need to send an event to force it to redraw when you set your ng-show to true.
 
 Here's an example of `refreshSlider` method that you should call whenever the slider becomes visible.
@@ -209,6 +209,8 @@ $scope.slider = {
 
 **showSelectionBar** - _Boolean (defaults to false)_: Set to true to always show the selection bar.
 
+**getSelectionBarColor** - _Function (defaults to null)_: Function that returns the current color of the selection bar.
+
 **hideLimitLabels** - _Boolean (defaults to false)_: Set to true to hide min / max labels
 
 **readOnly** - _Boolean (defaults to false)_: Set to true to make the slider read-only.

demo/demo.js

@@ -25,6 +25,25 @@ app.controller('MainCtrl', function($scope, $rootScope, $timeout, $modal) {
     }
   };
 
+
+  //Slider with selection bar
+  $scope.color_slider_bar = {
+    value: 12,
+    options: {
+      showSelectionBar: true,
+      getSelectionBarColor: function() {
+        var currentValue = $scope.color_slider_bar.value;
+        if (currentValue <= 3)
+          return 'red';
+        if (currentValue <= 6)
+          return 'orange';
+        if (currentValue <= 9)
+          return 'yellow';
+        return '#2AE02A';
+      }
+    }
+  };
+
   //Slider config with floor, ceil and step
   $scope.slider_floor_ceil = {
     value: 12,

demo/index.html

@@ -44,6 +44,14 @@ <h2>Slider with visible selection bar</h2>
     ></rzslider>
   </article>
 
+  <article>
+    <h2>Slider with dynamic selection bar colors</h2>
+    <rzslider
+      rz-slider-model="color_slider_bar.value"
+      rz-slider-options="color_slider_bar.options"
+    ></rzslider>
+  </article>
+
   <article>
     <h2>Slider with custom floor/ceil/step</h2>
     <rzslider

dist/rzslider.js

@@ -50,6 +50,7 @@
       showTicksValues: false,
       ticksValuesTooltip: null,
       vertical: false,
+      selectionBarColor: null,
       scale: 1,
       onStart: null,
       onChange: null,
@@ -432,6 +433,7 @@
               break;
             case 1:
               this.selBar = jElem;
+              this.selBarChild = this.selBar.children('rz-selection');
               break;
             case 2:
               this.minH = jElem;
@@ -863,6 +865,10 @@
       updateSelectionBar: function() {
         this.setDimension(this.selBar, Math.abs(this.maxH.rzsp - this.minH.rzsp) + this.handleHalfDim);
         this.setPosition(this.selBar, this.range ? this.minH.rzsp + this.handleHalfDim : 0);
+        if(this.options.getSelectionBarColor) {
+          var color = this.options.getSelectionBarColor();
+          this.selBarChild.css({backgroundColor: color});
+        }
       },
 
       /**

dist/rzslider.min.css

@@ -50,6 +50,7 @@
       showTicksValues: false,
       ticksValuesTooltip: null,
       vertical: false,
+      selectionBarColor: null,
       scale: 1,
       onStart: null,
       onChange: null,
@@ -432,6 +433,7 @@
               break;
             case 1:
               this.selBar = jElem;
+              this.selBarChild = this.selBar.children('rz-selection');
               break;
             case 2:
               this.minH = jElem;
@@ -863,6 +865,10 @@
       updateSelectionBar: function() {
         this.setDimension(this.selBar, Math.abs(this.maxH.rzsp - this.minH.rzsp) + this.handleHalfDim);
         this.setPosition(this.selBar, this.range ? this.minH.rzsp + this.handleHalfDim : 0);
+        if(this.options.getSelectionBarColor) {
+          var color = this.options.getSelectionBarColor();
+          this.selBarChild.css({backgroundColor: color});
+        }
       },
 
       /**