/**
* Creates an overlay state from a dialog config.
* @param dialogConfig The dialog configuration.
* @returns The overlay configuration.
*/
private _getOverlayState(dialogConfig: MdDialogConfig): OverlayState {
let state = new OverlayState();
state.positionStrategy = this._overlay.position()
.global()
.centerHorizontally()
.centerVertically();
return state;
}
/**
* Creates the overlay into which the dialog will be loaded.
* @param dialogConfig The dialog configuration.
* @returns A promise resolving to the OverlayRef for the created overlay.
*/
private _createOverlay(dialogConfig: MdDialogConfig): Promise<OverlayRef> {
let overlayState = this._getOverlayState(dialogConfig);
return this._overlay.create(overlayState);
}