print: show feedback for multipage entries

lib/model/source/media_store_source.dart

@@ -111,7 +111,9 @@ class MediaStoreSource extends CollectionSource {
     final uriByContentId = Map.fromEntries(changedUris.map((uri) {
       if (uri == null) return null;
       final idString = Uri.parse(uri).pathSegments.last;
-      return MapEntry(int.tryParse(idString), uri);
+      final contentId = int.tryParse(idString);
+      if (contentId == null) return null;
+      return MapEntry(contentId, uri);
     }).where((kv) => kv != null));
 
     // clean up obsolete entries

lib/widgets/collection/entry_set_action_delegate.dart

@@ -79,14 +79,14 @@ class EntrySetActionDelegate with FeedbackMixin, PermissionAwareMixin, SizeAware
     if (!await checkFreeSpaceForMove(context, selection, destinationAlbum, moveType)) return;
 
     final copy = moveType == MoveType.copy;
+    final selectionCount = selection.length;
     showOpReport<MoveOpEvent>(
       context: context,
-      selection: selection,
       opStream: ImageFileService.move(selection, copy: copy, destinationAlbum: destinationAlbum),
+      itemCount: selectionCount,
       onDone: (processed) async {
         final movedOps = processed.where((e) => e.success);
         final movedCount = movedOps.length;
-        final selectionCount = selection.length;
         if (movedCount < selectionCount) {
           final count = selectionCount - movedCount;
           showFeedback(context, 'Failed to ${copy ? 'copy' : 'move'} ${Intl.plural(count, one: '$count item', other: '$count items')}');
@@ -132,14 +132,14 @@ class EntrySetActionDelegate with FeedbackMixin, PermissionAwareMixin, SizeAware
 
     if (!await checkStoragePermission(context, selection)) return;
 
+    final selectionCount = selection.length;
     showOpReport<ImageOpEvent>(
       context: context,
-      selection: selection,
       opStream: ImageFileService.delete(selection),
+      itemCount: selectionCount,
       onDone: (processed) {
         final deletedUris = processed.where((e) => e.success).map((e) => e.uri).toList();
         final deletedCount = deletedUris.length;
-        final selectionCount = selection.length;
         if (deletedCount < selectionCount) {
           final count = selectionCount - deletedCount;
           showFeedback(context, 'Failed to delete ${Intl.plural(count, one: '$count item', other: '$count items')}');

lib/widgets/common/action_mixins/feedback.dart

@@ -1,5 +1,3 @@
-import 'package:aves/model/entry.dart';
-import 'package:aves/services/image_op_events.dart';
 import 'package:aves/theme/durations.dart';
 import 'package:flushbar/flushbar.dart';
 import 'package:flutter/material.dart';
@@ -27,22 +25,20 @@ mixin FeedbackMixin {
 
   // report overlay for multiple operations
 
-  OverlayEntry _opReportOverlayEntry;
-
-  void showOpReport<T extends ImageOpEvent>({
+  void showOpReport<T>({
     @required BuildContext context,
-    @required Set<AvesEntry> selection,
     @required Stream<T> opStream,
-    @required void Function(Set<T> processed) onDone,
+    @required int itemCount,
+    void Function(Set<T> processed) onDone,
   }) {
+    OverlayEntry _opReportOverlayEntry;
     _opReportOverlayEntry = OverlayEntry(
       builder: (context) => ReportOverlay<T>(
         opStream: opStream,
-        itemCount: selection.length,
+        itemCount: itemCount,
         onDone: (processed) {
-          _opReportOverlayEntry?.remove();
-          _opReportOverlayEntry = null;
-          onDone(processed);
+          _opReportOverlayEntry.remove();
+          onDone?.call(processed);
         },
       ),
     );

lib/widgets/filter_grids/common/chip_action_delegate.dart

@@ -79,14 +79,14 @@ class AlbumChipActionDelegate extends ChipActionDelegate with FeedbackMixin, Per
 
     if (!await checkStoragePermission(context, selection)) return;
 
+    final selectionCount = selection.length;
     showOpReport<ImageOpEvent>(
       context: context,
-      selection: selection,
       opStream: ImageFileService.delete(selection),
+      itemCount: selectionCount,
       onDone: (processed) {
         final deletedUris = processed.where((e) => e.success).map((e) => e.uri).toList();
         final deletedCount = deletedUris.length;
-        final selectionCount = selection.length;
         if (deletedCount < selectionCount) {
           final count = selectionCount - deletedCount;
           showFeedback(context, 'Failed to delete ${Intl.plural(count, one: '$count item', other: '$count items')}');
@@ -113,14 +113,14 @@ class AlbumChipActionDelegate extends ChipActionDelegate with FeedbackMixin, Per
 
     if (!await checkFreeSpaceForMove(context, selection, destinationAlbum, MoveType.move)) return;
 
+    final selectionCount = selection.length;
     showOpReport<MoveOpEvent>(
       context: context,
-      selection: selection,
       opStream: ImageFileService.move(selection, copy: false, destinationAlbum: destinationAlbum),
+      itemCount: selectionCount,
       onDone: (processed) async {
         final movedOps = processed.where((e) => e.success);
         final movedCount = movedOps.length;
-        final selectionCount = selection.length;
         if (movedCount < selectionCount) {
           final count = selectionCount - movedCount;
           showFeedback(context, 'Failed to move ${Intl.plural(count, one: '$count item', other: '$count items')}');

lib/widgets/viewer/entry_action_delegate.dart

@@ -54,7 +54,7 @@ class EntryActionDelegate with FeedbackMixin, PermissionAwareMixin, SizeAwareMix
         _showRenameDialog(context, entry);
         break;
       case EntryAction.print:
-        EntryPrinter(entry).print();
+        EntryPrinter(entry).print(context);
         break;
       case EntryAction.rotateCCW:
         _rotate(context, entry, clockwise: false);
@@ -181,14 +181,14 @@ class EntryActionDelegate with FeedbackMixin, PermissionAwareMixin, SizeAwareMix
       selection.add(entry);
     }
 
+    final selectionCount = selection.length;
     showOpReport<ExportOpEvent>(
       context: context,
-      selection: selection,
       opStream: ImageFileService.export(selection, destinationAlbum: destinationAlbum),
+      itemCount: selectionCount,
       onDone: (processed) {
         final movedOps = processed.where((e) => e.success);
         final movedCount = movedOps.length;
-        final selectionCount = selection.length;
         if (movedCount < selectionCount) {
           final count = selectionCount - movedCount;
           showFeedback(context, 'Failed to export ${Intl.plural(count, one: '$count page', other: '$count pages')}');

lib/widgets/viewer/printer.dart

@@ -1,23 +1,26 @@
+import 'dart:async';
 import 'dart:convert';
 
 import 'package:aves/model/entry.dart';
 import 'package:aves/model/entry_images.dart';
 import 'package:aves/services/image_file_service.dart';
 import 'package:aves/services/metadata_service.dart';
+import 'package:aves/widgets/common/action_mixins/feedback.dart';
+import 'package:flutter/widgets.dart';
 import 'package:pdf/widgets.dart' as pdf;
 import 'package:pedantic/pedantic.dart';
 import 'package:printing/printing.dart';
 
-class EntryPrinter {
+class EntryPrinter with FeedbackMixin {
   final AvesEntry entry;
 
-  const EntryPrinter(this.entry);
+  EntryPrinter(this.entry);
 
-  Future<void> print() async {
+  Future<void> print(BuildContext context) async {
     final documentName = entry.bestTitle ?? 'Aves';
     final doc = pdf.Document(title: documentName);
 
-    final pages = await _buildPages();
+    final pages = await _buildPages(context);
     if (pages.isNotEmpty) {
       pages.forEach(doc.addPage); // Page
       unawaited(Printing.layoutPdf(
@@ -27,7 +30,7 @@ class EntryPrinter {
     }
   }
 
-  Future<List<pdf.Page>> _buildPages() async {
+  Future<List<pdf.Page>> _buildPages(BuildContext context) async {
     final pages = <pdf.Page>[];
 
     void _addPdfPage(pdf.Widget pdfChild) {
@@ -47,10 +50,18 @@ class EntryPrinter {
     if (entry.isMultipage) {
       final multiPageInfo = await MetadataService.getMultiPageInfo(entry);
       if (multiPageInfo.pageCount > 1) {
+        final streamController = StreamController<AvesEntry>.broadcast();
+        showOpReport<AvesEntry>(
+          context: context,
+          opStream: streamController.stream,
+          itemCount: multiPageInfo.pageCount,
+        );
         for (final page in multiPageInfo.pages) {
           final pageEntry = entry.getPageEntry(page);
           _addPdfPage(await _buildPageImage(pageEntry));
+          streamController.sink.add(pageEntry);
         }
+        await streamController.close();
       }
     }
     if (pages.isEmpty) {