dashboard-image-dialog.component.ts
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///
/// 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 { Component, Inject } from '@angular/core';
import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
import { Store } from '@ngrx/store';
import { AppState } from '@core/core.state';
import { FormBuilder, FormGroup } from '@angular/forms';
import { Router } from '@angular/router';
import { DialogComponent } from '@app/shared/components/dialog.component';
import { DashboardId } from '@shared/models/id/dashboard-id';
import { DashboardService } from '@core/http/dashboard.service';
import { DomSanitizer, SafeUrl } from '@angular/platform-browser';
import html2canvas from 'html2canvas';
import { map, share } from 'rxjs/operators';
import { BehaviorSubject, from } from 'rxjs';
export interface DashboardImageDialogData {
dashboardId: DashboardId;
currentImage?: string;
dashboardElement: HTMLElement;
}
export interface DashboardImageDialogResult {
image?: string;
}
@Component({
selector: 'tb-dashboard-image-dialog',
templateUrl: './dashboard-image-dialog.component.html',
styleUrls: ['./dashboard-image-dialog.component.scss']
})
export class DashboardImageDialogComponent extends DialogComponent<DashboardImageDialogComponent, DashboardImageDialogResult> {
takingScreenshotSubject = new BehaviorSubject(false);
takingScreenshot$ = this.takingScreenshotSubject.asObservable().pipe(
share()
);
dashboardId: DashboardId;
safeImageUrl?: SafeUrl;
dashboardElement: HTMLElement;
dashboardImageFormGroup: FormGroup;
constructor(protected store: Store<AppState>,
protected router: Router,
@Inject(MAT_DIALOG_DATA) public data: DashboardImageDialogData,
public dialogRef: MatDialogRef<DashboardImageDialogComponent, DashboardImageDialogResult>,
private dashboardService: DashboardService,
private sanitizer: DomSanitizer,
private fb: FormBuilder) {
super(store, router, dialogRef);
this.dashboardId = this.data.dashboardId;
this.updateImage(this.data.currentImage);
this.dashboardElement = this.data.dashboardElement;
this.dashboardImageFormGroup = this.fb.group({
dashboardImage: [this.data.currentImage]
});
this.dashboardImageFormGroup.get('dashboardImage').valueChanges.subscribe(
(newImage) => {
this.updateImage(newImage);
}
);
}
takeScreenShot() {
this.takingScreenshotSubject.next(true);
from(html2canvas(this.dashboardElement, {
logging: false,
useCORS: true,
foreignObjectRendering: false,
scale: 512 / this.dashboardElement.clientWidth
})).pipe(
map(canvas => canvas.toDataURL())).subscribe(
(image) => {
this.updateImage(image);
this.dashboardImageFormGroup.patchValue({dashboardImage: image}, {emitEvent: false});
this.dashboardImageFormGroup.markAsDirty();
this.takingScreenshotSubject.next(false);
},
(e) => {
this.takingScreenshotSubject.next(false);
}
);
}
cancel(): void {
this.dialogRef.close(null);
}
save(): void {
this.dashboardService.getDashboard(this.dashboardId.id).subscribe(
(dashboard) => {
const newImage: string = this.dashboardImageFormGroup.get('dashboardImage').value;
dashboard.image = newImage;
this.dashboardService.saveDashboard(dashboard).subscribe(
() => {
this.dialogRef.close({
image: newImage
});
}
);
}
);
}
private updateImage(imageUrl: string) {
if (imageUrl) {
this.safeImageUrl = this.sanitizer.bypassSecurityTrustUrl(imageUrl);
} else {
this.safeImageUrl = null;
}
}
}