Add preferences support to DougalGraphGunsPressure

lib/www/client/source/src/components/graph-guns-pressure.vue

@@ -50,7 +50,7 @@ import * as aes from '@/lib/graphs/aesthetics.js';
 export default {
   name: 'DougalGraphGunsPressure',
   
-  props: [ "data" ],
+  props: [ "data", "settings" ],
 
   data () {
     return {
@@ -80,10 +80,24 @@ export default {
       }
     },
     
+    settings () {
+      for (const key in this.settings) {
+        this[key] = this.settings[key];
+      }
+    },
+    
+    shotpoint () {
+      if (this.shotpoint) {
+        this.replot();
+      }
+      this.$emit("update:settings", {[`${this.$options.name}.shotpoint`]: this.shotpoint});
+    },
+    
     violinplot () {
       if (this.violinplot) {
         this.plotViolin();
       }
+      this.$emit("update:settings", {[`${this.$options.name}.violinplot`]: this.violinplot});
     }
     
   },