Configure UI help assets base url.

@@ -96,7 +96,7 @@ public class DashboardController extends BaseController {
     public static final String DASHBOARD_DEFINITION = "The Dashboard object is a heavyweight object that contains information about the dashboard (e.g. title, image, assigned customers) and also configuration JSON (e.g. layouts, widgets, entity aliases).";
     public static final String HIDDEN_FOR_MOBILE = "Exclude dashboards that are hidden for mobile";
 
-    @Value("${dashboard.max_datapoints_limit}")
+    @Value("${ui.dashboard.max_datapoints_limit}")
     private long maxDatapointsLimit;
 
     @ApiOperation(value = "Get server time (getServerTime)",

+/**
+ * Copyright © 2016-2021 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.
+ */
+package org.thingsboard.server.controller;
+
+import io.swagger.annotations.ApiOperation;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+import org.thingsboard.server.common.data.exception.ThingsboardException;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+
+@RestController
+@TbCoreComponent
+@RequestMapping("/api")
+public class UiSettingsController extends BaseController {
+
+    @Value("${ui.help.base-url}")
+    private String helpBaseUrl;
+
+    @ApiOperation(value = "Get UI help base url (getHelpBaseUrl)",
+            notes = "Get UI help base url used to fetch help assets. " +
+                    "The actual value of the base url is configurable in the system configuration file.")
+    @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/uiSettings/helpBaseUrl", method = RequestMethod.GET)
+    @ResponseBody
+    public String getHelpBaseUrl() throws ThingsboardException {
+        return helpBaseUrl;
+    }
+
+}

@@ -129,10 +129,16 @@ usage:
     check:
       cycle: "${USAGE_STATS_CHECK_CYCLE:60000}"
 
-# Dashboard parameters
-dashboard:
-  # Maximum allowed datapoints fetched by widgets
-  max_datapoints_limit: "${DASHBOARD_MAX_DATAPOINTS_LIMIT:50000}"
+# UI parameters
+ui:
+  # Dashboard parameters
+  dashboard:
+    # Maximum allowed datapoints fetched by widgets
+    max_datapoints_limit: "${DASHBOARD_MAX_DATAPOINTS_LIMIT:50000}"
+  # Help parameters
+  help:
+    # Base url for UI help assets
+    base-url: "${UI_HELP_BASE_URL:https://raw.githubusercontent.com/thingsboard/thingsboard/master/ui-ngx/src/assets}"
 
 database:
   ts_max_intervals: "${DATABASE_TS_MAX_INTERVALS:700}" # Max number of DB queries generated by single API call to fetch telemetry records

@@ -70,13 +70,12 @@ frontend http-in
  acl transport_http_acl path_beg /api/v1/
  acl letsencrypt_http_acl path_beg /.well-known/acme-challenge/
  acl tb_api_acl path_beg /api/ /swagger /webjars /v2/ /static/rulenode/ /oauth2/ /login/oauth2/ /static/widgets/
- acl tb_rulenode_assets path_reg ^/assets/help/.*/rulenode/.*$
 
  redirect scheme https if !letsencrypt_http_acl !transport_http_acl { env(FORCE_HTTPS_REDIRECT) -m str true }
 
  use_backend letsencrypt_http if letsencrypt_http_acl
  use_backend tb-http-backend if transport_http_acl
- use_backend tb-api-backend if tb_api_acl or tb_rulenode_assets
+ use_backend tb-api-backend if tb_api_acl
 
  default_backend tb-web-backend
 
@@ -89,10 +88,9 @@ frontend https_in
 
   acl transport_http_acl path_beg /api/v1/
   acl tb_api_acl path_beg /api/ /swagger /webjars /v2/ /static/rulenode/ /oauth2/ /login/oauth2/ /static/widgets/
-  acl tb_rulenode_assets path_reg ^/assets/help/.*/rulenode/.*$
 
   use_backend tb-http-backend if transport_http_acl
-  use_backend tb-api-backend if tb_api_acl or tb_rulenode_assets
+  use_backend tb-api-backend if tb_api_acl
 
   default_backend tb-web-backend
 

@@ -26,10 +26,6 @@ const PROXY_CONFIG = {
     "target": ruleNodeUiforwardUrl,
     "secure": false,
   },
-  "/assets/help/*/rulenode/**": {
-    "target": ruleNodeUiforwardUrl,
-    "secure": false,
-  },
   "/static/widgets": {
     "target": forwardUrl,
     "secure": false,

+///
+/// Copyright © 2016-2021 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 { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { defaultHttpOptions, defaultHttpOptionsFromConfig, RequestConfig } from '@core/http/http-utils';
+import { Observable } from 'rxjs';
+import { publishReplay, refCount } from 'rxjs/operators';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class UiSettingsService {
+
+  private helpBaseUrlObservable: Observable<string>;
+
+  constructor(
+    private http: HttpClient
+  ) { }
+
+  public getHelpBaseUrl(): Observable<string> {
+    if (!this.helpBaseUrlObservable) {
+      this.helpBaseUrlObservable = this.http.get('/api/uiSettings/helpBaseUrl', {responseType: 'text', ...defaultHttpOptions(true)}).pipe(
+        publishReplay(1),
+        refCount()
+      );
+    }
+    return this.helpBaseUrlObservable;
+  }
+}

@@ -18,23 +18,29 @@ import { Injectable } from '@angular/core';
 import { HttpClient } from '@angular/common/http';
 import { TranslateService } from '@ngx-translate/core';
 import { Observable, of } from 'rxjs';
-import { catchError, mergeMap, tap } from 'rxjs/operators';
-import { helpBaseUrl } from '@shared/models/constants';
+import { catchError, map, mergeMap, tap } from 'rxjs/operators';
+import { helpBaseUrl as siteBaseUrl } from '@shared/models/constants';
+import { UiSettingsService } from '@core/http/ui-settings.service';
 
-const NOT_FOUND_CONTENT = '## Not found';
+const localHelpBaseUrl = '/assets';
+
+const NOT_FOUND_CONTENT: HelpData = {
+  content: '## Not found',
+  helpBaseUrl: localHelpBaseUrl
+};
 
 @Injectable({
   providedIn: 'root'
 })
 export class HelpService {
 
-  private helpBaseUrl = helpBaseUrl;
-
+  private siteBaseUrl = siteBaseUrl;
   private helpCache: {[lang: string]: {[key: string]: string}} = {};
 
   constructor(
     private translate: TranslateService,
-    private http: HttpClient
+    private http: HttpClient,
+    private uiSettingsService: UiSettingsService
   ) {}
 
   getHelpContent(key: string): Observable<string> {
@@ -70,13 +76,38 @@ export class HelpService {
     }
   }
 
-  private loadHelpContent(lang: string, key: string): Observable<string> {
-    return this.http.get(`/assets/help/${lang}/${key}.md`, {responseType: 'text'} );
+  private loadHelpContent(lang: string, key: string): Observable<HelpData> {
+    return this.uiSettingsService.getHelpBaseUrl().pipe(
+      mergeMap((helpBaseUrl) => {
+        return this.loadHelpContentFromBaseUrl(helpBaseUrl, lang, key).pipe(
+          catchError((e) => {
+            if (localHelpBaseUrl !== helpBaseUrl) {
+              return this.loadHelpContentFromBaseUrl(localHelpBaseUrl, lang, key);
+            } else {
+              throw e;
+            }
+          })
+        );
+      })
+    );
+  }
+
+  private loadHelpContentFromBaseUrl(helpBaseUrl: string, lang: string, key: string): Observable<HelpData> {
+    return this.http.get(`${helpBaseUrl}/help/${lang}/${key}.md`, {responseType: 'text'} ).pipe(
+      map((content) => {
+        return {
+          content,
+          helpBaseUrl
+        };
+      })
+    );
   }
 
-  private processVariables(content: string): string {
-    const baseUrlReg = /\${baseUrl}/g;
-    return content.replace(baseUrlReg, this.helpBaseUrl);
+  private processVariables(helpData: HelpData): string {
+    const baseUrlReg = /\${siteBaseUrl}/g;
+    helpData.content = helpData.content.replace(baseUrlReg, this.siteBaseUrl);
+    const helpBaseUrlReg = /\${helpBaseUrl}/g;
+    return helpData.content.replace(helpBaseUrlReg, helpData.helpBaseUrl);
   }
 
   private processIncludes(content: string): Observable<string> {
@@ -96,3 +127,8 @@ export class HelpService {
   }
 
 }
+
+interface HelpData {
+  content: string;
+  helpBaseUrl: string;
+}

@@ -58,11 +58,11 @@ return details;
 
 <br>
 
-More details about Alarms can be found in [this tutorial{:target="_blank"}](${baseUrl}/docs/user-guide/alarms/).
+More details about Alarms can be found in [this tutorial{:target="_blank"}](${siteBaseUrl}/docs/user-guide/alarms/).
 
 You can see the real life example, where this node is used, in the next tutorial:
 
-- [Create and Clear Alarms{:target="_blank"}](${baseUrl}/docs/user-guide/rule-engine-2-0/tutorials/create-clear-alarms/)
+- [Create and Clear Alarms{:target="_blank"}](${siteBaseUrl}/docs/user-guide/rule-engine-2-0/tutorials/create-clear-alarms/)
 
 <br>
 <br>

@@ -59,11 +59,11 @@ return details;
 
 <br>
 
-More details about Alarms can be found in [this tutorial{:target="_blank"}](${baseUrl}/docs/user-guide/alarms/).
+More details about Alarms can be found in [this tutorial{:target="_blank"}](${siteBaseUrl}/docs/user-guide/alarms/).
 
 You can see the real life example, where this node is used, in the next tutorial:
 
-- [Create and Clear Alarms{:target="_blank"}](${baseUrl}/docs/user-guide/rule-engine-2-0/tutorials/create-clear-alarms/)
+- [Create and Clear Alarms{:target="_blank"}](${siteBaseUrl}/docs/user-guide/rule-engine-2-0/tutorials/create-clear-alarms/)
 
 <br>
 <br>

@@ -61,8 +61,8 @@ return false;
 
 You can see real life example, how to use this node in those tutorials:
 
-- [Create and Clear Alarms{:target="_blank"}](${baseUrl}/docs/user-guide/rule-engine-2-0/tutorials/create-clear-alarms/#node-a-filter-script)
-- [Reply to RPC Calls{:target="_blank"}](${baseUrl}/docs/user-guide/rule-engine-2-0/tutorials/rpc-reply-tutorial#add-filter-script-node)
+- [Create and Clear Alarms{:target="_blank"}](${siteBaseUrl}/docs/user-guide/rule-engine-2-0/tutorials/create-clear-alarms/#node-a-filter-script)
+- [Reply to RPC Calls{:target="_blank"}](${siteBaseUrl}/docs/user-guide/rule-engine-2-0/tutorials/rpc-reply-tutorial#add-filter-script-node)
 
 <br>
 <br>

@@ -31,7 +31,7 @@ return 'Incoming message:\n' + JSON.stringify(msg) +
 
 You can see real life example, how to use this node in this tutorial:
 
-- [Reply to RPC Calls{:target="_blank"}](${baseUrl}/docs/user-guide/rule-engine-2-0/tutorials/rpc-reply-tutorial#log-unknown-request)
+- [Reply to RPC Calls{:target="_blank"}](${siteBaseUrl}/docs/user-guide/rule-engine-2-0/tutorials/rpc-reply-tutorial#log-unknown-request)
 
 <br>
 <br>

@@ -90,7 +90,7 @@ return [];
 
 You can see real life example, how to use this node in this tutorial:
 
-- [Data function based on telemetry from 2 devices{:target="_blank"}](${baseUrl}/docs/user-guide/rule-engine-2-0/tutorials/function-based-on-telemetry-from-two-devices#delta-temperature-rule-chain)
+- [Data function based on telemetry from 2 devices{:target="_blank"}](${siteBaseUrl}/docs/user-guide/rule-engine-2-0/tutorials/function-based-on-telemetry-from-two-devices#delta-temperature-rule-chain)
 
 <br>
 <br>

@@ -52,8 +52,8 @@ return {msg: msg, metadata: metadata, msgType: newType};
 
 You can see real life example, how to use this node in those tutorials:
 
-- [Transform incoming telemetry{:target="_blank"}](${baseUrl}/docs/user-guide/rule-engine-2-0/tutorials/transform-incoming-telemetry/)
-- [Reply to RPC Calls{:target="_blank"}](${baseUrl}/docs/user-guide/rule-engine-2-0/tutorials/rpc-reply-tutorial#add-transform-script-node)
+- [Transform incoming telemetry{:target="_blank"}](${siteBaseUrl}/docs/user-guide/rule-engine-2-0/tutorials/transform-incoming-telemetry/)
+- [Reply to RPC Calls{:target="_blank"}](${siteBaseUrl}/docs/user-guide/rule-engine-2-0/tutorials/rpc-reply-tutorial#add-transform-script-node)
 
 <br>
 <br>

@@ -20,6 +20,7 @@ A JavaScript function performing custom action.
 * Display alert dialog with entity information:
 
 ```javascript
+{:code-style="max-height: 300px;"}
 var title;
 var content;
 if (entityName) {
@@ -52,6 +53,7 @@ function showAlertDialog(title, content) {
 * Delete device after confirmation:
 
 ```javascript
+{:code-style="max-height: 300px;"}
 var $injector = widgetContext.$scope.$injector;
 var dialogs = $injector.get(widgetContext.servicesMap.get('dialogs'));
 var deviceService = $injector.get(widgetContext.servicesMap.get('deviceService'));

 #### HTML template of dialog to create a device or an asset
 
 ```html
+{:code-style="max-height: 400px;"}
 <form #addEntityForm="ngForm" [formGroup]="addEntityFormGroup"
       (ngSubmit)="save()" class="add-entity-form">
   <mat-toolbar fxLayout="row" color="primary">
@@ -158,3 +159,6 @@
 </form>
 {:copy-code}
 ```
+
+<br>
+<br>

 #### Function displaying dialog to create a device or an asset
 
 ```javascript
+{:code-style="max-height: 400px;"}
 let $injector = widgetContext.$scope.$injector;
 let customDialog = $injector.get(widgetContext.servicesMap.get('customDialog'));
 let assetService = $injector.get(widgetContext.servicesMap.get('assetService'));
@@ -130,3 +131,6 @@ function AddEntityDialogController(instance) {
 }
 {:copy-code}
 ```
+
+<br>
+<br>

 #### HTML template of dialog to edit a device or an asset
 
 ```html
+{:code-style="max-height: 400px;"}
 <form #editEntityForm="ngForm" [formGroup]="editEntityFormGroup"
       (ngSubmit)="save()"  class="edit-entity-form">
   <mat-toolbar fxLayout="row" color="primary">
@@ -190,3 +191,6 @@
 </form>
 {:copy-code}
 ```
+
+<br>
+<br>

 #### Function displaying dialog to edit a device or an asset
 
 ```javascript
+{:code-style="max-height: 400px;"}
 let $injector = widgetContext.$scope.$injector;
 let customDialog = $injector.get(widgetContext.servicesMap.get('customDialog'));
 let entityService = $injector.get(widgetContext.servicesMap.get('entityService'));
@@ -218,3 +219,6 @@ function EditEntityDialogController(instance) {
 }
 {:copy-code}
 ```
+
+<br>
+<br>

@@ -34,7 +34,7 @@ function showQrCodeDialog(title, code, format) {
 {:copy-code}
 ```
 
-* Parse code as a device claiming info (in this case ```{deviceName: string, secretKey: string}```)<br>and then claim device (see [Claiming devices{:target="_blank"}](${baseUrl}/docs/user-guide/claiming-devices/) for details):
+* Parse code as a device claiming info (in this case ```{deviceName: string, secretKey: string}```)<br>and then claim device (see [Claiming devices{:target="_blank"}](${siteBaseUrl}/docs/user-guide/claiming-devices/) for details):
 
 ```javascript
 var $scope = widgetContext.$scope;

@@ -127,7 +127,7 @@ self.onDataUpdated = function() {
 
  - Click the **Run** button on the **Widget Editor Toolbar** in order to see the result in **Widget preview** section.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/alarm-widget-sample.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/alarm-widget-sample.png)
 
 In this example, the **alarmSource** and **alarms** properties of <span trigger-style="fontSize: 16px;" trigger-text="<b>subscription</b>" tb-help-popup="widget/editor/widget_js_subscription_object"></span> are assigned to **$scope** and become accessible within HTML template.
 

@@ -57,7 +57,7 @@ self.onDataUpdated = function() {
 
  - Click the **Run** button on the **Widget Editor Toolbar** in order to see the result in **Widget preview** section.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/external-js-widget-sample.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/external-js-widget-sample.png)
 
 In this example, the external JS library API was used that becomes available after injecting the corresponding URL in **Resources** section.
 

@@ -98,7 +98,7 @@ self.onDataUpdated = function() {
 
  - Click the **Run** button on the **Widget Editor Toolbar** in order to see the result in **Widget preview** section.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/external-js-timeseries-widget-sample.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/external-js-timeseries-widget-sample.png)
 
 In this example, the external JS library API was used that becomes available after injecting the corresponding URL in **Resources** section.
 

@@ -37,7 +37,7 @@ The **Widget Editor** will open, pre-populated with the content of the default *
 
  - Click the **Run** button on the **Widget Editor Toolbar** in order to see the result in **Widget preview** section.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/latest-values-widget-sample.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/latest-values-widget-sample.png)
 
 In this example, the **data** property of <span trigger-style="fontSize: 16px;" trigger-text="<b>subscription</b>" tb-help-popup="widget/editor/widget_js_subscription_object"></span> is assigned to the **$scope** and becomes accessible within the HTML template.
 

@@ -114,7 +114,7 @@ self.onInit = function() {
  - Click the **Run** button on the **Widget Editor Toolbar** in order to see the result in **Widget preview** section.
  - Click dashboard edit button on the preview section to change the size of the resulting widget. Then click dashboard apply button. The final widget should look like the image below.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/control-widget-sample.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/control-widget-sample.png)
 
 - Click the **Save** button on the **Widget Editor Toolbar** to save widget type.
 
@@ -123,13 +123,13 @@ To test how this widget performs RPC commands, we will need to place it in a das
 - Login as Tenant administrator.
 - Navigate to **Devices** and create new device with some name, for ex. "My RPC Device".
 - Open device details and click "Copy Access Token" button to copy device access token to clipboard.
-- Download [mqtt-js-rpc-from-server.sh{:target="_blank"}](${baseUrl}/docs/reference/resources/mqtt-js-rpc-from-server.sh) and [mqtt-js-rpc-from-server.js{:target="_blank"}](${baseUrl}/docs/reference/resources/mqtt-js-rpc-from-server.js). Place these files in a folder.
+- Download [mqtt-js-rpc-from-server.sh{:target="_blank"}](${siteBaseUrl}/docs/reference/resources/mqtt-js-rpc-from-server.sh) and [mqtt-js-rpc-from-server.js{:target="_blank"}](${siteBaseUrl}/docs/reference/resources/mqtt-js-rpc-from-server.js). Place these files in a folder.
   Edit **mqtt-js-rpc-from-server.sh** - replace **$ACCESS_TOKEN** with your device access token from the clipboard. And install mqtt client library.
 - Run **mqtt-js-rpc-from-server.sh** script. You should see a "connected" message in the console.
 - Navigate to **Dashboards** and create a new dashboard with some name, for ex. "My first control dashboard". Open this dashboard.
 - Click dashboard "edit" button. In the dashboard edit mode, click the "Entity aliases" button located on the dashboard toolbar.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/dashboard-toolbar-entity-aliases.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/dashboard-toolbar-entity-aliases.png)
 
 - Inside **Entity aliases** popup click "Add alias".
 - Fill "Alias name" field, for ex. "My RPC Device Alias".
@@ -137,12 +137,12 @@ To test how this widget performs RPC commands, we will need to place it in a das
 - Choose "Device" in "Type" field.
 - Select your device in "Entity list" field. In this example "My RPC Device".
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/add-rpc-device-alias.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/add-rpc-device-alias.png)
 
 - Click "Add" and then "Save" in **Entity aliases**.
 - Click dashboard "+" button then click "Create new widget" button.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/dashboard-create-new-widget-button.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/dashboard-create-new-widget-button.png)
 
 - Then select **Widget Bundle** where your RPC widget was saved. Select "Control widget" tab.
 - Click your widget. In this example, "My first control widget".
@@ -152,7 +152,7 @@ To test how this widget performs RPC commands, we will need to place it in a das
 - Fill **RPC params** field with RPC params. For ex. "{ param1: "value1" }".
 - Click **Send RPC command** button. You should see the following response in the widget.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/control-widget-sample-response-one-way.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/control-widget-sample-response-one-way.png)
 
 The following output should be printed in the device console:
 
@@ -166,18 +166,18 @@ In order to test "Two way" RPC command mode, we need to change the corresponding
 - Click dashboard "edit" button. In dashboard edit mode, click **Edit widget** button located in the header of Control widget.
 - In the widget details, view select "Advanced" tab and uncheck "Is One Way Command" checkbox.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/control-widget-sample-settings.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/control-widget-sample-settings.png)
 
 - Click **Apply changes** button on the widget details header. Close details and click dashboard **Apply changes** button.
 - Fill widget fields with RPC method name and params like in previous steps.
   Click **Send RPC command** button. You should see the following response in the widget.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/control-widget-sample-response-two-way.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/control-widget-sample-response-two-way.png)
 
 - stop **mqtt-js-rpc-from-server.sh** script.
   Click **Send RPC command** button. You should see the following response in the widget.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/control-widget-sample-response-timeout.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/control-widget-sample-response-timeout.png)
 
 In this example, **controlApi** is used to send RPC commands. Additionally, custom widget settings were introduced in order to configure RPC command mode and RPC request timeout.
 

@@ -58,7 +58,7 @@ self.onInit = function() {
 
  - Click the **Run** button on the **Widget Editor Toolbar** to see the resulting **Widget preview** section.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/static-widget-sample.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/static-widget-sample.png)
 
 This is just a static HTML widget.  There is no subscription data and no special widget API was used.
 

@@ -75,7 +75,7 @@ self.onDataUpdated = function() {
 
  - Click the **Run** button on the **Widget Editor Toolbar** in order to see the result in **Widget preview** section.
 
-![image](${baseUrl}/images/user-guide/contribution/widgets/timeseries-widget-sample.png)
+![image](${helpBaseUrl}/help/images/widget/editor/examples/timeseries-widget-sample.png)
 
 In this example, the <span trigger-style="fontSize: 16px;" trigger-text="<b>subscription</b>" tb-help-popup="widget/editor/widget_js_subscription_object"></span> **datasources** and **data** properties are assigned to **$scope** and become accessible within the HTML template.
 

@@ -3,7 +3,7 @@
 <div class="divider"></div>
 <br/>
 
-All widget related JavaScript code according to the [Widget API{:target="_blank"}](${baseUrl}/docs/user-guide/contribution/widgets-development/#basic-widget-api).
+All widget related JavaScript code according to the [Widget API{:target="_blank"}](${siteBaseUrl}/docs/user-guide/contribution/widgets-development/#basic-widget-api).
 The built-in variable **self** is a reference to the widget instance.<br>
 Each widget function should be defined as a property of the **self** variable.
 **self** variable has property **ctx** of type [WidgetContext{:target="_blank"}](https://github.com/thingsboard/thingsboard/blob/5bb6403407aa4898084832d6698aa9ea6d484889/ui-ngx/src/app/modules/home/models/widget-component.models.ts#L107) - a reference to widget context that has all necessary API and data used by widget instance.
@@ -129,7 +129,7 @@ Browser debugger (if enabled) will automatically pause code execution at the deb
 
 ##### Further reading
 
-For more information read  [Widgets Development Guide{:target="_blank"}](${baseUrl}/docs/user-guide/contribution/widgets-development).
+For more information read  [Widgets Development Guide{:target="_blank"}](${siteBaseUrl}/docs/user-guide/contribution/widgets-development).
 
 <br>
 <br>

@@ -3,10 +3,10 @@
 <div class="divider"></div>
 <br/>
 
-The widget subscription object is instance of [IWidgetSubscription{:target="_blank"}](https://github.com/thingsboard/thingsboard/blob/2627fe51d491055d4140f16617ed543f7f5bd8f6/ui-ngx/src/app/core/api/widget-api.models.ts#L264") and contains all subscription information, including current data, according to the [widget type{:target="_blank"}](${baseUrl}/docs/user-guide/ui/widget-library/#widget-types).
+The widget subscription object is instance of [IWidgetSubscription{:target="_blank"}](https://github.com/thingsboard/thingsboard/blob/2627fe51d491055d4140f16617ed543f7f5bd8f6/ui-ngx/src/app/core/api/widget-api.models.ts#L264") and contains all subscription information, including current data, according to the [widget type{:target="_blank"}](${siteBaseUrl}/docs/user-guide/ui/widget-library/#widget-types).
 
 Depending on widget type, subscription object provides different data structures.
-For [Latest values{:target="_blank"}](${baseUrl}/docs/user-guide/ui/widget-library/#latest-values) and [Time-series{:target="_blank"}](${baseUrl}/docs/user-guide/ui/widget-library/#time-series) widget types, it provides the following properties:
+For [Latest values{:target="_blank"}](${siteBaseUrl}/docs/user-guide/ui/widget-library/#latest-values) and [Time-series{:target="_blank"}](${siteBaseUrl}/docs/user-guide/ui/widget-library/#time-series) widget types, it provides the following properties:
 
 - **datasources** - array of datasources (Array<[Datasource{:target="_blank"}](https://github.com/thingsboard/thingsboard/blob/2627fe51d491055d4140f16617ed543f7f5bd8f6/ui-ngx/src/app/shared/models/widget.models.ts#L279)>) used by this subscription, using the following structure:
 
@@ -54,7 +54,7 @@ For [Latest values{:target="_blank"}](${baseUrl}/docs/user-guide/ui/widget-libra
     ]     
 ```
 
-For [Alarm widget{:target="_blank"}](${baseUrl}/docs/user-guide/ui/widget-library/#alarm-widget) type it provides the following properties:
+For [Alarm widget{:target="_blank"}](${siteBaseUrl}/docs/user-guide/ui/widget-library/#alarm-widget) type it provides the following properties:
 
 - **alarmSource** - ([Datasource{:target="_blank"}](https://github.com/thingsboard/thingsboard/blob/2627fe51d491055d4140f16617ed543f7f5bd8f6/ui-ngx/src/app/shared/models/widget.models.ts#L279)) information about entity for which alarms are fetched, using the following structure:
 
@@ -110,4 +110,4 @@ For [Alarm widget{:target="_blank"}](${baseUrl}/docs/user-guide/ui/widget-librar
     ]               
 ```
 
-For [RPC{:target="_blank"}](${baseUrl}/docs/user-guide/ui/widget-library/#rpc-control-widget) or [Static{:target="_blank"}](${baseUrl}/docs/user-guide/ui/widget-library/#static) widget types, subscription object is optional and does not contain necessary information.
+For [RPC{:target="_blank"}](${siteBaseUrl}/docs/user-guide/ui/widget-library/#rpc-control-widget) or [Static{:target="_blank"}](${siteBaseUrl}/docs/user-guide/ui/widget-library/#static) widget types, subscription object is optional and does not contain necessary information.

@@ -33,7 +33,7 @@ return '# Some title\n - Entity name: ' + data[0]['entityName'];
 <ul>
 <li>
 Display greetings for currently logged-in user.<br>
-Let's assume widget has first datasource configured using <code>Current User</code> <a target="_blank" href="${baseUrl}/docs/user-guide/ui/aliases/#single-entity">Single entity</a> alias<br>
+Let's assume widget has first datasource configured using <code>Current User</code> <a target="_blank" href="${siteBaseUrl}/docs/user-guide/ui/aliases/#single-entity">Single entity</a> alias<br>
 and has data keys for <code>firstName</code>, <code>lastName</code> and <code>name</code> entity fields:
 </li>
 </ul>

@@ -34,7 +34,7 @@ return data[0] ? data[0]['entityName'] : '';
 <li>
 Prepare QR code text to use as device claiming info (in this case <code>{deviceName: string, secretKey: string}</code>).<br>
 Let's assume device has <code>claimingData</code> attribute with string JSON value containing <code>secretKey</code> field<br>
-(see <a target="_blank" href="${baseUrl}/docs/user-guide/claiming-devices/">Claiming devices</a>):
+(see <a target="_blank" href="${siteBaseUrl}/docs/user-guide/claiming-devices/">Claiming devices</a>):
 </li>
 </ul>