UI: b/track*.js: use properties for track mute/solo/volume

Signed-off-by: Stefan Westerfeld <stefan@space.twc.de>

Author: swesterfeld

ui/b/trackview.js

@@ -81,8 +81,8 @@ const HTML = (t, d) => html`
         >${t.wtrack_.name}</b-editable>
     </span>
     <span class="-mute-solo">
-      <b-toggle @valuechange=${event => t.track.mute (event.target.value)} label="M"></b-toggle>
-      <b-toggle @valuechange=${event => t.track.solo (event.target.value)} label="S"></b-toggle>
+      <b-toggle @valuechange=${event => t.track.set_value ("mute", event.target.value)} label="M"></b-toggle>
+      <b-toggle @valuechange=${event => t.track.set_value ("solo", event.target.value)} label="S"></b-toggle>
       <b-trackvolume .track="${t.track}" @valuechange=${event => t.track.volume (event.target.value)}></b-trackvolume>
     </span>
     <div class="-lvm-main">

ui/b/trackvolume.js

@@ -61,6 +61,7 @@ class BTrackVolume extends LitComponent {
     this.percent = 0;
     this.last_ = 0;
     this.track = null;
+    this.prop = null;
   }
   updated (changed_props)
   {
@@ -75,7 +76,12 @@ class BTrackVolume extends LitComponent {
   }
   async update_value()
   {
-    this.value = await this.track.volume();
+    if (!this.prop)
+      {
+        let prop = await this.track.access_property ("volume");
+        this.prop = prop;
+      }
+    this.value = await this.prop.get_normalized();
     this.percent = this.value * 100;
     this.last_ = this.value;
   }
@@ -86,9 +92,10 @@ class BTrackVolume extends LitComponent {
   drag_change (distance)
   {
     this.last_ = Util.clamp (this.last_ + distance, 0, +1);
-    this.track.volume (this.last_);
     this.value = this.last_;
     this.percent = this.value * 100;
+    if (this.prop)
+      this.prop.set_normalized (this.value);
   }
 }
 customElements.define ('b-trackvolume', BTrackVolume);