Function refreshGridModelAfterManageThumbnailsActiveChange

renderer.js:3302–3367

After reordering the default thumbnail, sync the virtual grid cell (same approach as thumbnail-deleted IPC).

(filePath)

                  await window.electron.showMessage('Warning', failedMsg);
                }, 600);
              } else {
                // Show non-blocking notification for partial failures
                console.warn(failedMsg);
              }
            }
          };
          
          // Listen for completion event
          window.electron.onHashGenerationComplete(completionListener);
          
          // Set up the listener (works in both normal and server mode)
          window.electron.onHashGenerationProgress(progressListener);
          
          // Check if hash generation is already running before starting
          const isAlreadyRunning = await window.electron.isGeneratingHashes();
          if (isAlreadyRunning) {
            console.log('Hash generation already in progress, attaching to existing process');
            // Don't start a new process, just attach to the existing one
            // The progress listener is already set up above, so it will receive updates
            // Update the dialog message to indicate we're joining an existing process
            const dialogContent = progressDialog.querySelector('p');
            if (dialogContent) {
              dialogContent.textContent = 'Hash generation is already running in the background. Progress will be shown here.';
            }
            // Don't call generateMissingHashes() - just wait for progress updates
            return; // Exit early, progress listener will handle completion
          }
          
          // Start hash generation
          try {
            const result = await window.electron.generateMissingHashes();
            
            // Check if it's already running (shouldn't happen after the check above, but handle it)
            if (result && result.alreadyRunning) {
              console.log('Hash generation was already running, attached to existing process');
              // Progress listener is already set up, just wait for updates
              return;
            }
            
            // Check if all hashes failed
            if (result && result.failed === result.total && result.total > 0) {
              // All hashes failed - error dialog will be shown by completion listener
              // Reset flags
              isHashDialogShowing = false;
              isCheckingForHashes = false;
              // Close progress dialog
              progressDialog.close();
              progressDialog.remove();
              return;
            }
            // If some or all succeeded, the completion listener will handle the dialog closing
          } catch (error) {
            console.error('Error generating hashes:', error);
            // Reset flags on error
            isHashDialogShowing = false;
            isCheckingForHashes = false;
            // Close progress dialog
            progressDialog.close();