Merged PR 154398: [Embedded] Support Zoom Programmatically

Added zoomLevel as an attribute of ISettings.

Related Work Item: #527743
Related PRs:
-  JS SDK : https://powerbi.visualstudio.com/Embedded/_git/powerbi-javascript/pullrequest/154397
- PBIClients :  https://powerbi.visualstudio.com/PowerBIClients/_git/PowerBIClients/pullrequest/154396

Related work items: #527743

src/models.ts

@@ -1087,6 +1087,7 @@ export interface ISettings {
     visualRenderedEvents?: boolean;
     visualSettings?: IVisualSettings;
     localeSettings?: ILocaleSettings;
+    zoomLevel?: number;
 }
 
 export interface IReportBars {
@@ -1769,3 +1770,8 @@ export function validateCustomTheme(input: any): IError[] {
     const errors: any[] = Validators.customThemeValidator.validate(input);
     return errors ? errors.map(normalizeError) : undefined;
 }
+
+export function validateZoomLevel(input: any): IError[] {
+    const errors: any[] = Validators.zoomLevelValidator.validate(input);
+    return errors ? errors.map(normalizeError) : undefined;
+}

src/validators/core/typeValidator.ts

@@ -189,3 +189,29 @@ export class NumberArrayValidator extends ArrayValidator {
         return null;
     }
 }
+
+export class RangeValidator extends NumberValidator {
+
+    constructor(private minValue: number, private maxValue: number) {
+        super();
+    }
+
+    public validate(input: any, path?: string, field?: string): IValidationError[] {
+        if (input == null) {
+            return null;
+        }
+        const errors = super.validate(input, path, field);
+        if (errors) {
+            return errors;
+        }
+        // input is a number, now check if it's in the given range
+        if(input > this.maxValue || input < this.minValue) {
+            return [{
+                message: field + " must be a number between " + this.minValue + " and " + this.maxValue,
+                path: (path ? path + "." : "") + field,
+                keyword: "range"
+            }];
+        }
+        return null;
+    }
+}

src/validators/core/validator.ts

@@ -58,7 +58,7 @@ import { AnyOfValidator } from './anyOfValidator';
 import { FieldForbiddenValidator } from './fieldForbiddenValidator';
 import { FieldRequiredValidator } from './fieldRequiredValidator';
 import { MapValidator } from './mapValidator';
-import { ArrayValidator, BooleanArrayValidator, BooleanValidator, EnumValidator, NumberArrayValidator, NumberValidator, StringArrayValidator, StringValidator } from './typeValidator';
+import { ArrayValidator, BooleanArrayValidator, BooleanValidator, EnumValidator, NumberArrayValidator, NumberValidator, RangeValidator, StringArrayValidator, StringValidator } from './typeValidator';
 import { ParametersPanelValidator } from '../models/parameterPanelValidator';
 
 export interface IValidationError {
@@ -198,4 +198,5 @@ export const Validators = {
     visualSelectorValidator: new VisualSelectorValidator(),
     visualSettingsValidator: new VisualSettingsValidator(),
     visualTypeSelectorValidator: new VisualTypeSelectorValidator(),
+    zoomLevelValidator: new RangeValidator(0.25, 4),
 };