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import * as service from './service';

import * as embed from './embed';

import * as models from 'powerbi-models';

import * as wpmp from 'window-post-message-proxy';

import * as hpm from 'http-post-message';

import * as utils from './util';

import { Defaults } from './defaults';

/**

* A Dashboard node within a dashboard hierarchy

*

* @export

* @interface IDashboardNode

*/

export interface IDashboardNode {

iframe: HTMLIFrameElement;

service: service.IService;

config: embed.IEmbedConfigurationBase

}

/**

* A Power BI Dashboard embed component

*

* @export

* @class Dashboard

* @extends {embed.Embed}

* @implements {IDashboardNode}

* @implements {IFilterable}

*/

export class Dashboard extends embed.Embed implements IDashboardNode {

static allowedEvents = ["tileClicked", "error"];

static dashboardIdAttribute = 'powerbi-dashboard-id';

static typeAttribute = 'powerbi-type';

static type = "Dashboard";

/**

* Creates an instance of a Power BI Dashboard.

*

* @param {service.Service} service

* @param {HTMLElement} element

*/

constructor(service: service.Service, element: HTMLElement, config: embed.IEmbedConfigurationBase) {

super(service, element, config);

this.loadPath = "/dashboard/load";

Array.prototype.push.apply(this.allowedEvents, Dashboard.allowedEvents);

}

/**

* This adds backwards compatibility for older config which used the dashboardId query param to specify dashboard id.

* E.g. https://powerbi-df.analysis-df.windows.net/dashboardEmbedHost?dashboardId=e9363c62-edb6-4eac-92d3-2199c5ca2a9e

*

* By extracting the id we can ensure id is always explicitly provided as part of the load configuration.

*

* @static

* @param {string} url

* @returns {string}

*/

static findIdFromEmbedUrl(url: string): string {

const dashboardIdRegEx = /dashboardId="?([^&]+)"?/

const dashboardIdMatch = url.match(dashboardIdRegEx);

let dashboardId;

if (dashboardIdMatch) {

dashboardId = dashboardIdMatch[1];

}

return dashboardId;

}

/**

* Get dashboard id from first available location: options, attribute, embed url.

*

* @returns {string}

*/

getId(): string {

let config = <embed.IEmbedConfiguration>this.config;

const dashboardId = config.id || this.element.getAttribute(Dashboard.dashboardIdAttribute) || Dashboard.findIdFromEmbedUrl(config.embedUrl);

if (typeof dashboardId !== 'string' || dashboardId.length === 0) {

throw new Error(`Dashboard id is required, but it was not found. You must provide an id either as part of embed configuration or as attribute '${Dashboard.dashboardIdAttribute}'.`);

}

return dashboardId;

}

/**

* Validate load configuration.

*/

validate(baseConfig: embed.IEmbedConfigurationBase): models.IError[] {

const config = baseConfig as embed.IEmbedConfiguration;

let error = models.validateDashboardLoad(config);

return error ? error : this.ValidatePageView(config.pageView);

}

/**

* Populate config for load config

*

* @param {IEmbedConfigurationBase}

* @returns {void}

*/

populateConfig(baseConfig: embed.IEmbedConfigurationBase): void {

let config = <embed.IEmbedConfiguration>baseConfig;

super.populateConfig(config);

// TODO: Change when Object.assign is available.

const settings = utils.assign({}, Defaults.defaultSettings, config.settings);

config = utils.assign({ settings }, config);

config.id = this.getId();

this.config = config;

}

/**

* Validate that pageView has a legal value: if page view is defined it must have one of the values defined in models.PageView

*/

private ValidatePageView(pageView: models.PageView): models.IError[] {

if (pageView && pageView !== "fitToWidth" && pageView !== "oneColumn" && pageView !== "actualSize") {

return [{message: "pageView must be one of the followings: fitToWidth, oneColumn, actualSize"}];

}

}

}