oh-colorpicker: Fix command not sent when state null & style not acce…

…pted & cosmetic error on missing defaultColor (#1989)

Fixes #1713.

- Fix command not sent when current Item state is null.
- Fix style can not be set.
- Fix a (cosmetic) error thrown when defaultColor has no value.

---------

Signed-off-by: Florian Hotze <[email protected]>

bundles/org.openhab.ui/web/src/components/widgets/system/oh-colorpicker.vue

@@ -1,11 +1,13 @@
 <template>
-  <div v-if="!config.openIn" ref="container" style="width: 100%" />
-  <div v-else ref="swatch" :class="config.swatchClasses || ['elevation-4', 'elevation-hover-8', 'elevation-pressed-1', 'elevation-transition']" :style="{
-    width: (config.swatchSize) ? config.swatchSize + 'px' : '32px',
-    height: (config.swatchSize) ? config.swatchSize + 'px' : '32px',
-    borderRadius: (config.swatchBorderRadius) ? config.swatchBorderRadius + 'px' : '6px',
-    cursor: 'pointer'
-  }" />
+  <div :style="config.style">
+    <div v-if="!config.openIn" ref="container" style="width: 100%" />
+    <div v-else ref="swatch" :class="config.swatchClasses || ['elevation-4', 'elevation-hover-8', 'elevation-pressed-1', 'elevation-transition']" :style="{
+      width: (config.swatchSize) ? config.swatchSize + 'px' : '32px',
+      height: (config.swatchSize) ? config.swatchSize + 'px' : '32px',
+      borderRadius: (config.swatchBorderRadius) ? config.swatchBorderRadius + 'px' : '6px',
+      cursor: 'pointer'
+    }" />
+  </div>
 </template>
 
 <script>
@@ -46,7 +48,14 @@ export default {
         color[2] = color[2] / 100
         return color
       }
-      return JSON.parse(this.config.defaultColor) || null
+      if (this.config.defaultColor) {
+        try {
+          return JSON.parse(this.config.defaultColor)
+        } catch {
+          return null
+        }
+      }
+      return null
     }
   },
   watch: {
@@ -119,8 +128,8 @@ export default {
     },
     areHSBEqual (hsb1, hsb2) {
       // for the purposes of NOT entering an endless loop, we consider transient non-HSB values to be equal
-      if (hsb1.length !== hsb2.length) return true
-      if (hsb1.length !== 3 || hsb2.length !== 3) return true
+      if (hsb1.length !== hsb2.length) return false
+      if (hsb1.length !== 3 || hsb2.length !== 3) return false
       return (hsb1[0] === hsb2[0] && hsb1[1] === hsb2[1] && hsb1[2] === hsb2[2])
     },
     roundedHSB (state) {