# MrmCurrencyRateComponent

**Kind:** Class

**Source:** `Frontend/src/app/components/dashboard/dashboard-libary/widgets/mrm-currency-rate/mrm-currency-rate.component.ts` (line 92)

**Part of:** [Frontend](subsystem-frontend-src-app)

`MrmCurrencyRateComponent` is a dashboard widget component for loading, initializing, calculating, and saving currency-rate dashboard data. It checks feature subscription access, responds to Angular lifecycle changes, and formats price and month values for display.

**Extends:** `BaseWidgetComponent`

## Methods

| Method | Signature | Returns |
|---|---|---|
| `checkFeatureSubscription` | `checkFeatureSubscription()` | `boolean` |
| `ngOnInit` | `ngOnInit()` | `void` |
| `ngOnChanges` | `ngOnChanges()` | `void` |
| `getDashboardData` | `getDashboardData()` | `void` |
| `initalizingData` | `initalizingData(value: BranchData[])` | `void` |
| `saveDashboardData` | `saveDashboardData()` | `void` |
| `calculateSumByYear` | `calculateSumByYear()` | `void` |
| `calculateSumByMonth` | `calculateSumByMonth(monthIndex: number)` | `void` |
| `translateMonthName` | `translateMonthName(month: MonthData)` | `string` |
| `getpriceFormatted` | `getpriceFormatted(x: undefined)` | `string` |
| `onResize` | `onResize()` | `void` |
| `setChaching` | `setChaching()` | `void` |
| `getChaching` | `getChaching()` | `void` |
| `switchChartTypeHandler` | `switchChartTypeHandler()` | `void` |
| `switchBasedOnTendencyHandler` | `switchBasedOnTendencyHandler()` | `void` |
| `comparingWithPrevMonth` | `comparingWithPrevMonth(month: BranchData, bIndex: number, monthIndex: number, propertyName: string)` | `string` |
| `comparingBookingWithPrevSumm` | `comparingBookingWithPrevSumm(month: MonthsSum, index: number, propertyName: string)` | `string` |
| `isCurrentMonth` | `isCurrentMonth(month: MonthData)` | `boolean` |
| `getpriceForecastAmount` | `getpriceForecastAmount(month: MonthData)` | `number` |
| `expectedCurrencyChange` | `expectedCurrencyChange(e: undefined)` | `void` |
| `selectText` | `selectText(e: undefined)` | `void` |
| `editSelectedMonthPrepare` | `editSelectedMonthPrepare(month: MonthData, supplierId: number)` | `void` |
| `openPopup` | `openPopup(n: string, t: string, i: string, btnTxt: string)` | `void` |
| `savePopup` | `savePopup()` | `void` |
| `ClosewithDonotSave` | `ClosewithDonotSave()` | `void` |
| `OnOpenedPopup` | `OnOpenedPopup()` | `void` |
| `closePopup` | `closePopup()` | `void` |

## Properties

| Property | Type |
|---|---|
| `sharedPopup` | `SharedPopupComponent` |
| `_widget` | `Widget` |
| `_widgetType` | `string` |
| `yearId` | `number` |
| `periodId` | `number` |
| `countOfEditablePrevMonths` | `number` |
| `withoutOptionBar` | `boolean` |
| `editMode` | `boolean` |
| `bookingOrSales` | `number` |
| `withNominal` | `boolean` |
| `selectedTeam` | `number` |
| `forecastRuleId` | `number` |
| `allowedtoEdit` | `boolean` |
| `allowedtoEnableEdting` | `boolean` |
| `widgetEditRequest` | `any` |
| `widgetEditEnd` | `any` |
| `forecastRules` | `any[]` |
| `selectedYear` | `number` |
| `numYearsDatasource` | `any[]` |
| `todayWidgetsEnum` | `any` |
| `cachingWidgetData` | `CachingWidgetData` |
| `data` | `BranchData[]` |
| `originalData` | `BranchData[]` |
| `selectedData` | `BranchData[]` |
| `singleMonths` | `MonthData` |
| `monthsSummery` | `MonthsSum[]` |
| `branchCurrency` | `any` |
| `basedOnTendency` | `boolean` |
| `SeriseRange` | `any[]` |
| `echartsIntance` | `any` |
| `totalBookingMonths` | `MonthsSum[]` |
| `tempMonthSum` | `MonthsSum` |
| `totalTargets` | `number` |
| `yearBooking` | `number` |
| `totalForecasts` | `number` |
| `tempTotalTarget` | `TotalTargets` |
| `totalPercentageUsedBudget` | `number` |
| `popup` | `any` |
| `searchText` | `string` |
| `pastDiff` | `number` |
| `urrenFeature` | `number` |

## Where it refuses work

- `MrmCurrencyRateComponent` stops the work with an early return when `this.dashboardLibraryService.checkFeatureSubscription(this.widget.chartEnumId)`.
- `MrmCurrencyRateComponent` stops the work with an early return when `month.MonthId == 12`.
- `MrmCurrencyRateComponent` stops the work with an early return when `month[propertyName] < this.data[bIndex].Details[monthIndex - 1][propertyName]`.
- `MrmCurrencyRateComponent` stops the work with an early return when `month[propertyName] < this.totalBookingMonths[index - 1][propertyName]`.
- `MrmCurrencyRateComponent` stops the work with an early return when `AppSettings.calculateMonthsBeforeToday(month.YearId, month.MonthId -1) == 0 || AppSetting…`.

## Diagram

```mermaid
graph LR
  A[Angular lifecycle] --> B[ngOnInit]
  A --> C[ngOnChanges]
  B --> D[checkFeatureSubscription]
  D --> E[initalizingData]
  E --> F[getDashboardData]
  F --> G[calculateSumByYear]
  F --> H[calculateSumByMonth]
  G --> I[translateMonthName]
  H --> J[getpriceFormatted]
  E --> K[saveDashboardData]
```

## Usage

```ts
import { Component, ViewChild } from '@angular/core';
import { MrmCurrencyRateComponent } from './mrm-currency-rate/mrm-currency-rate.component';

@Component({
  selector: 'app-dashboard-page',
  template: `
    <app-mrm-currency-rate></app-mrm-currency-rate>

    <button (click)="refreshCurrencyRates()">
      Refresh currency rates
    </button>
  `,
})
export class DashboardPageComponent {
  @ViewChild(MrmCurrencyRateComponent)
  currencyRateComponent?: MrmCurrencyRateComponent;

  refreshCurrencyRates(): void {
    const widget = this.currencyRateComponent;

    if (!widget?.checkFeatureSubscription()) {
      return;
    }

    widget.getDashboardData();

    const formattedPrice = widget.getpriceFormatted();
    console.log('Formatted currency rate:', formattedPrice);
  }
}
```

## AI Coding Instructions

- Check `checkFeatureSubscription()` before loading or updating currency-rate dashboard data.
- Keep initialization work in `ngOnInit()` and react to Angular input updates through `ngOnChanges()`.
- Use `initalizingData()` as the setup path before calculations or persistence when the component state requires initialization.
- Keep year and month aggregation logic in `calculateSumByYear()` and `calculateSumByMonth()` rather than duplicating calculations in parent dashboard components.
- Use `translateMonthName()` and `getpriceFormatted()` for display values so formatting remains consistent with the widget.

## Used by

3 references from 3 files. Each is a place in this repository where the symbol is actually used — go read one rather than trusting an example.

### Imported by (3)

- `DashboardTabComponent` — `Frontend/src/app/components/dashboard/dashboard-libary/dashboard-tab/dashboard-tab.component.ts`:1
- `DashboardWidgetsModule` — `Frontend/src/app/components/dashboard/dashboard-widgets.module.ts`:1
- `ReportsTabComponent` — `Frontend/src/app/components/reports/reports-library/reports-tab/reports-tab.component.ts`:1