This PR will adds a placeholder when downloading LCP or OPDS book, and display a progress bar based on the feedback from server.
For OPDS, it's using smooth partial reload when download finished or failed. For LCP, it's full reload due to the execution order or promise chain and download callback.
This PR will adds a placeholder when downloading LCP or OPDS book, and display a progress bar based on the feedback from server.
For OPDS, it's using smooth partial reload when download finished or failed. For LCP, it's full reload due to the execution order or promise chain and download callback.
fix #40