Determine if a dialog is currently open in Angular Material

I recently implemented the Angular Material dialog in my app to display warning messages.

Now, I'm facing a challenge where I need to determine if a dialog is already open:

private _openDialog() {
  // if (this.dialog.isOpen()) return; <-- NOT WORKING
  this.dialog.open(WarningComponent, {
    width: '450px',
    height: '380px',
  });

}

Inquiry: Is there a method to verify if an Angular Material Dialog box is currently open?

Answer №1

If you have a single component, simply store the reference for easy manipulation.

private _displayDialog() {
  if (!this.dialogRef) return;
  this.dialogRef = this.dialog.open(InfoComponent, {
    width: '400px',
    height: '300px',
  });

  this.dialogRef.afterClosed().pipe(
    finalize(() => this.dialogRef = undefined)
  );
}

If you are dealing with multiple components, make sure to keep track of all open dialogs:

private _displayDialog() {
  if (!this.dialog.openDialogs || !this.dialog.openDialogs.length) return;
  this.dialog.open(InfoComponent, {
    width: '400px',
    height: '300px',
  });
}

Answer №2

To determine if a MatDialog is open, utilize the getState() method from the MatDialogRef:

const dialogRef = this.dialog.open(MyDialogComponent);
if(this.dialog.getState() === MatDialogState.OPEN) {
    // The dialog is currently open.
}

Answer №3

If you're looking for a way to implement dialogs, consider using this.dialog.getDialogById:

        const checkForDialog = this.dialog.getDialogById('message-pop-up');

        if (!checkForDialog) {
          this.dialog.open(MessagePopUpComponent, {
            id: 'message-pop-up',
            data: // add your data here
          });
        }

Answer №4

In order to address the issue, I came up with a solution involving the declaration of a boolean variable.

public isLoginDialogOpen: boolean = false; // Initial value set to false

public openLoginDialog() {

if (this.isLoginDialogOpen) {
  return;
}

this.isLoginDialogOpen = true;

this.loginDialogRef = this.dialog.open(LoginDialogComponent, {
  data: null,
  panelClass: 'theme-dialog',
  autoFocus: false
});

this.loginDialogRef.afterClosed().subscribe(result => {
  this.isLoginDialogOpen = false;
  console.log('The dialog was closed');
});
}

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