thingsboard-aplcache

diff --git a/application/src/main/data/json/system/widget_bundles/control_widgets.json b/application/src/main/data/json/system/widget_bundles/control_widgets.json
index 70f8e9c..7f9c75a 100644
--- a/application/src/main/data/json/system/widget_bundles/control_widgets.json
+++ b/application/src/main/data/json/system/widget_bundles/control_widgets.json
@@ -84,6 +84,22 @@
         "dataKeySettingsSchema": "{}\n",
         "defaultConfig": "{\"targetDeviceAliases\":[],\"showTitle\":false,\"backgroundColor\":\"#fff\",\"color\":\"rgba(0, 0, 0, 0.87)\",\"padding\":\"0px\",\"settings\":{\"requestTimeout\":500,\"initialValue\":false,\"getValueMethod\":\"getValue\",\"setValueMethod\":\"setValue\",\"showOnOffLabels\":true,\"title\":\"Round switch\"},\"title\":\"Round switch\",\"dropShadow\":true,\"enableFullscreen\":false,\"widgetStyle\":{},\"titleStyle\":{\"fontSize\":\"16px\",\"fontWeight\":400},\"useDashboardTimewindow\":true,\"showLegend\":false,\"actions\":{},\"decimals\":2}"
       }
+    },
+    {
+      "alias": "led_indicator",
+      "name": "Led indicator",
+      "descriptor": {
+        "type": "rpc",
+        "sizeX": 2.5,
+        "sizeY": 2.5,
+        "resources": [],
+        "templateHtml": "<tb-led-indicator ctx='ctx'></tb-led-indicator>",
+        "templateCss": "",
+        "controllerScript": "self.onInit = function() {\n    var scope = self.ctx.$scope;\n    scope.ctx = self.ctx;\n}\n\nself.onResize = function() {\n    if (self.ctx.resize) {\n        self.ctx.resize();\n    }\n}\n\nself.onDestroy = function() {\n}\n",
+        "settingsSchema": "{\n    \"schema\": {\n        \"type\": \"object\",\n        \"title\": \"Settings\",\n        \"properties\": {\n            \"initialValue\": {\n                \"title\": \"Initial value\",\n                \"type\": \"boolean\",\n                \"default\": false\n            },\n            \"title\": {\n                \"title\": \"LED title\",\n                \"type\": \"string\",\n                \"default\": \"\"\n            },\n            \"ledColor\": {\n                \"title\": \"LED Color\",\n                \"type\": \"string\",\n                \"default\": \"green\"\n            },\n            \"getValueMethod\": {\n                \"title\": \"Get value method\",\n                \"type\": \"string\",\n                \"default\": \"getValue\"\n            },\n            \"valuePollingInterval\": {\n                \"title\": \"Value polling interval (ms)\",\n                \"type\": \"number\",\n                \"default\": 500\n            },\n            \"requestTimeout\": {\n                \"title\": \"RPC request timeout (ms)\",\n                \"type\": \"number\",\n                \"default\": 500\n            }\n        },\n        \"required\": [\"getValueMethod\", \"requestTimeout\"]\n    },\n    \"form\": [\n        \"initialValue\",\n        \"title\",\n        {\n          \"key\": \"ledColor\",\n          \"type\": \"color\"\n        },\n        \"getValueMethod\",\n        \"valuePollingInterval\",\n        \"requestTimeout\"\n    ]\n}",
+        "dataKeySettingsSchema": "{}\n",
+        "defaultConfig": "{\"targetDeviceAliases\":[],\"showTitle\":false,\"backgroundColor\":\"#fff\",\"color\":\"rgba(0, 0, 0, 0.87)\",\"padding\":\"0px\",\"settings\":{\"requestTimeout\":500,\"initialValue\":true,\"getValueMethod\":\"getValue\",\"title\":\"Led indicator\",\"ledColor\":\"#4caf50\",\"valuePollingInterval\":500},\"title\":\"Led indicator\",\"dropShadow\":true,\"enableFullscreen\":false,\"widgetStyle\":{},\"titleStyle\":{\"fontSize\":\"16px\",\"fontWeight\":400},\"useDashboardTimewindow\":true,\"showLegend\":false,\"actions\":{},\"decimals\":2}"
+      }
     }
   ]
 }
\ No newline at end of file

diff --git a/ui/src/app/widget/lib/rpc/index.js b/ui/src/app/widget/lib/rpc/index.js
index 0536fac..d57878d 100644
--- a/ui/src/app/widget/lib/rpc/index.js
+++ b/ui/src/app/widget/lib/rpc/index.js
@@ -17,9 +17,11 @@
 import tbKnob from './knob.directive';
 import tbSwitch from './switch.directive';
 import tbRoundSwitch from './round-switch.directive';
+import tbLedIndicator from './led-indicator.directive';
 
 export default angular.module('thingsboard.widgets.rpc', [
     tbKnob,
     tbSwitch,
-    tbRoundSwitch
+    tbRoundSwitch,
+    tbLedIndicator
 ]).name;

diff --git a/ui/src/app/widget/lib/rpc/led-indicator.directive.js b/ui/src/app/widget/lib/rpc/led-indicator.directive.js
new file mode 100644
index 0000000..58a7c4b
--- /dev/null
+++ b/ui/src/app/widget/lib/rpc/led-indicator.directive.js
@@ -0,0 +1,201 @@
+/*
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import './led-indicator.scss';
+
+import tinycolor from 'tinycolor2';
+
+/* eslint-disable import/no-unresolved, import/default */
+
+import ledIndicatorTemplate from './led-indicator.tpl.html';
+
+/* eslint-enable import/no-unresolved, import/default */
+
+export default angular.module('thingsboard.widgets.rpc.ledIndicator', [])
+    .directive('tbLedIndicator', LedIndicator)
+    .name;
+
+/*@ngInject*/
+function LedIndicator() {
+    return {
+        restrict: "E",
+        scope: true,
+        bindToController: {
+            ctx: '='
+        },
+        controller: LedIndicatorController,
+        controllerAs: 'vm',
+        templateUrl: ledIndicatorTemplate
+    };
+}
+
+/*@ngInject*/
+function LedIndicatorController($element, $scope, $timeout) {
+    let vm = this;
+
+    vm.showTitle = false;
+    vm.value = false;
+    vm.error = '';
+
+    var led = angular.element('.led', $element),
+        ledContainer = angular.element('#led-container', $element),
+        textMeasure = angular.element('#text-measure', $element),
+        ledTitleContainer = angular.element('.title-container', $element),
+        ledTitle = angular.element('.led-title', $element),
+        ledErrorContainer = angular.element('.error-container', $element),
+        ledError = angular.element('.led-error', $element);
+
+    $scope.$watch('vm.ctx', () => {
+        if (vm.ctx) {
+            init();
+        }
+    });
+
+    $scope.$on('$destroy', () => {
+        vm.destroyed = true;
+        if (vm.requestValueTimeoutHandle) {
+            $timeout.cancel(vm.requestValueTimeoutHandle);
+        }
+    });
+
+    resize();
+
+    function init() {
+
+        vm.title = angular.isDefined(vm.ctx.settings.title) ? vm.ctx.settings.title : '';
+        vm.showTitle = vm.title && vm.title.length ? true : false;
+
+        var origColor = angular.isDefined(vm.ctx.settings.ledColor) ? vm.ctx.settings.ledColor : 'green';
+
+        vm.ledColor = tinycolor(origColor).brighten(30).toHexString();
+        vm.ledMiddleColor = tinycolor(origColor).toHexString();
+        vm.disabledColor = tinycolor(origColor).darken(40).toHexString();
+        vm.disabledMiddleColor = tinycolor(origColor).darken(60).toHexString();
+
+        vm.ctx.resize = resize;
+        $scope.$applyAsync(() => {
+            resize();
+        });
+        var initialValue = angular.isDefined(vm.ctx.settings.initialValue) ? vm.ctx.settings.initialValue : false;
+        setValue(initialValue, true);
+
+        var subscription = vm.ctx.defaultSubscription;
+        var rpcEnabled = subscription.rpcEnabled;
+
+        vm.isSimulated = $scope.widgetEditMode;
+
+        vm.requestTimeout = 500;
+        if (vm.ctx.settings.requestTimeout) {
+            vm.requestTimeout = vm.ctx.settings.requestTimeout;
+        }
+        vm.valuePollingInterval = 500;
+        if (vm.ctx.settings.valuePollingInterval) {
+            vm.valuePollingInterval = vm.ctx.settings.valuePollingInterval;
+        }
+        vm.getValueMethod = 'getValue';
+        if (vm.ctx.settings.getValueMethod && vm.ctx.settings.getValueMethod.length) {
+            vm.getValueMethod = vm.ctx.settings.getValueMethod;
+        }
+        if (!rpcEnabled) {
+            onError('Target device is not set!');
+        } else {
+            if (!vm.isSimulated) {
+                rpcRequestValue();
+            }
+        }
+    }
+
+    function resize() {
+        var width = ledContainer.width();
+        var height = ledContainer.height();
+        var size = Math.min(width, height);
+
+        led.css({width: size, height: size});
+
+        if (vm.showTitle) {
+            setFontSize(ledTitle, vm.title, ledTitleContainer.height() * 2 / 3, ledTitleContainer.width());
+        }
+        setFontSize(ledError, vm.error, ledErrorContainer.height(), ledErrorContainer.width());
+    }
+
+    function setValue(value, forceUpdate) {
+        if (vm.value != value || forceUpdate) {
+            vm.value = value;
+            updateColor();
+        }
+    }
+
+    function updateColor() {
+        var color = vm.value ? vm.ledColor : vm.disabledColor;
+        var middleColor = vm.value ? vm.ledMiddleColor : vm.disabledMiddleColor;
+        var boxShadow = `#000 0 -1px 6px 1px, inset ${middleColor} 0 -1px 8px, ${color} 0 3px 11px`;
+        led.css({'backgroundColor': color});
+        led.css({'boxShadow': boxShadow});
+        if (vm.value) {
+            led.removeClass( 'disabled' );
+        } else {
+            led.addClass( 'disabled' );
+        }
+    }
+
+    function onError(error) {
+        $scope.$applyAsync(() => {
+            vm.error = error;
+            setFontSize(ledError, vm.error, ledErrorContainer.height(), ledErrorContainer.width());
+        });
+    }
+
+    function setFontSize(element, text, fontSize, maxWidth) {
+        var textWidth = measureTextWidth(text, fontSize);
+        while (textWidth > maxWidth) {
+            fontSize--;
+            textWidth = measureTextWidth(text, fontSize);
+        }
+        element.css({'fontSize': fontSize+'px', 'lineHeight': fontSize+'px'});
+    }
+
+    function measureTextWidth(text, fontSize) {
+        textMeasure.css({'fontSize': fontSize+'px', 'lineHeight': fontSize+'px'});
+        textMeasure.text(text);
+        return textMeasure.width();
+    }
+
+    function rpcRequestValue() {
+        if (vm.destroyed) {
+            return;
+        }
+        vm.error = '';
+        vm.ctx.controlApi.sendTwoWayCommand(vm.getValueMethod, null, vm.requestTimeout).then(
+            (responseBody) => {
+                var newValue = responseBody ? true : false;
+                setValue(newValue);
+                if (vm.requestValueTimeoutHandle) {
+                    $timeout.cancel(vm.requestValueTimeoutHandle);
+                }
+                vm.requestValueTimeoutHandle = $timeout(rpcRequestValue, vm.valuePollingInterval);
+            },
+            () => {
+                var errorText = vm.ctx.defaultSubscription.rpcErrorText;
+                onError(errorText);
+                if (vm.requestValueTimeoutHandle) {
+                    $timeout.cancel(vm.requestValueTimeoutHandle);
+                }
+                vm.requestValueTimeoutHandle = $timeout(rpcRequestValue, vm.valuePollingInterval);
+            }
+        );
+    }
+
+}

diff --git a/ui/src/app/widget/lib/rpc/led-indicator.scss b/ui/src/app/widget/lib/rpc/led-indicator.scss
new file mode 100644
index 0000000..d086a10
--- /dev/null
+++ b/ui/src/app/widget/lib/rpc/led-indicator.scss
@@ -0,0 +1,78 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+@import "~compass-sass-mixins/lib/compass";
+
+$error-height: 14px;
+
+$background-color: #e6e7e8;
+
+.tb-led-indicator {
+  width:100%;
+  height:100%;
+  background: $background-color;
+
+  .title-container {
+    .led-title {
+      color: #757575;
+      font-weight: 500;
+      white-space: nowrap;
+    }
+  }
+
+  .error-container {
+    position:absolute;
+    top: 1%;
+    left: 0;
+    right: 0;
+    z-index:4;
+    height: $error-height;
+    .led-error {
+      color: #ff3315;
+      white-space: nowrap;
+    }
+  }
+  #text-measure {
+    position: absolute;
+    visibility: hidden;
+    height: auto;
+    width: auto;
+    white-space: nowrap;
+  }
+
+  #led-container {
+    padding: 10px;
+    .led {
+      cursor: pointer;
+      position: relative;
+      border-radius: 50%;
+      background-image: -owg-radial-gradient(50% 50%, circle closest-corner, transparent, rgba(0, 0, 0, 0.25));
+      background-image: -webkit-radial-gradient(50% 50%, circle closest-corner, transparent, rgba(0, 0, 0, 0.25));
+      background-image: -moz-radial-gradient(50% 50%, circle closest-corner, transparent, rgba(0, 0, 0, 0.25));
+      background-image: -o-radial-gradient(50% 50%, circle closest-corner, transparent, rgba(0, 0, 0, 0.25));
+      background-image: radial-gradient(50% 50%, circle closest-corner, transparent, rgba(0, 0, 0, 0.25));
+      transition: background-color 0.5s, box-shadow 0.5s;
+      &.disabled {
+        background-image: -owg-radial-gradient(50% 50%, circle closest-corner, rgba(255, 255, 255, 0.5), rgba(0, 0, 0, 0.1));
+        background-image: -webkit-radial-gradient(50% 50%, circle closest-corner, rgba(255, 255, 255, 0.5), rgba(0, 0, 0, 0.1));
+        background-image: -moz-radial-gradient(50% 50%, circle closest-corner, rgba(255, 255, 255, 0.5), rgba(0, 0, 0, 0.1));
+        background-image: -o-radial-gradient(50% 50%, circle closest-corner, rgba(255, 255, 255, 0.5), rgba(0, 0, 0, 0.1));
+        background-image: radial-gradient(50% 50%, circle closest-corner, rgba(255, 255, 255, 0.5), rgba(0, 0, 0, 0.1));
+      }
+    }
+  }
+}
+

diff --git a/ui/src/app/widget/lib/rpc/led-indicator.tpl.html b/ui/src/app/widget/lib/rpc/led-indicator.tpl.html
new file mode 100644
index 0000000..a092f42
--- /dev/null
+++ b/ui/src/app/widget/lib/rpc/led-indicator.tpl.html
@@ -0,0 +1,32 @@
+<!--
+
+    Copyright © 2016-2017 The Thingsboard Authors
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+-->
+<div class="tb-led-indicator" layout="column">
+    <div flex="20" class="title-container" layout="row" layout-align="center center" ng-show="vm.showTitle">
+        <span class="led-title">{{vm.title}}</span>
+    </div>
+    <div flex="{{vm.showTitle ? 80 : 100}}"
+         ng-style="{paddingTop: vm.showTitle ? '5px': '10px'}" id="led-container" layout="column" layout-align="center center">
+        <div class="led">
+        </div>
+    </div>
+    <div class="error-container" ng-style="{'background': vm.error.length ? 'rgba(255,255,255,0.25)' : 'none'}"
+         layout="row" layout-align="center center">
+        <span class="led-error">{{ vm.error }}</span>
+    </div>
+    <div id="text-measure"></div>
+</div>

diff --git a/ui/src/app/widget/lib/rpc/round-switch.directive.js b/ui/src/app/widget/lib/rpc/round-switch.directive.js
index e930b70..edb8c7b 100644
--- a/ui/src/app/widget/lib/rpc/round-switch.directive.js
+++ b/ui/src/app/widget/lib/rpc/round-switch.directive.js
@@ -76,7 +76,6 @@ function RoundSwitchController($element, $scope, utils) {
 
         vm.title = angular.isDefined(vm.ctx.settings.title) ? vm.ctx.settings.title : '';
         vm.showTitle = vm.title && vm.title.length ? true : false;
-        vm.showOnOffLabels = angular.isDefined(vm.ctx.settings.showOnOffLabels) ? vm.ctx.settings.showOnOffLabels : true;
         vm.ctx.resize = resize;
         $scope.$applyAsync(() => {
             resize();