Added lamp

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/trunk@1870 b32b6428-25c9-4566-ad07-03861ab6144f

apps/dashboard/xaal/dashboard/static/tags/lamp.tag

+<lamp>
+
+<div class="lamp">
+<div class="{stateClass}">{ light }</div>
+  <button class="button ripple" name="btn_on" onclick={ btn }>ON</button>
+  <button class="button ripple" name="btn_off" onclick={ btn }>OFF</button>
+</div>
+
+<script>
+  this.addr = opts.xaal_addr
+  this.light = '__';
+  this.stateClass = 'state-unknow';
+
+  receive(data) {
+  state = data['attributes']['light']
+    if (state == true) {
+      this.light = 'ON'
+      this.stateClass = 'state-on'
+    }
+    else {
+      this.light = 'OFF'
+      this.stateClass = 'state-off'
+    }
+    this.update()
+ }
+
+  btn(e) {
+    if (e.target.name =='btn_on')
+      sio_send_request(this.addr,'on',{})
+    if (e.target.name =='btn_off')
+      sio_send_request(this.addr,'off',{})
+  }
+</script>
+
+<style>
+ .state-on {
+     color:  var(--color3);
+     font-weight: bold;
+     padding: 8px;
+ }
+
+ .state-unknow, .state-off {
+     color:  var(--color1);
+     font-weight: bold;
+     padding: 8px;
+ }
+</style>
+</lamp>