product pagination

lib/core/service/pharmacy_categorise_service.dart

@@ -143,11 +143,14 @@ class PharmacyCategoriseService extends BaseService {
     );
   }
 
-  Future getParentProducts({String id}) async {
+  Future getParentProducts(
+      {String id, int pageNumber, bool isLoading = false}) async {
     hasError = false;
-    _parentProductsList.clear();
+    if (isLoading == false) {
+      _parentProductsList.clear();
+    }
     String endPoint = id != null
-        ? GET_PARENT_PRODUCTS + "$id" + '&page=1&limit=50'
+        ? GET_PARENT_PRODUCTS + "$id" + '&page=' + '$pageNumber' + '&limit=24'
         : GET_PARENT_PRODUCTS + "";
     await baseAppClient.getPharmacy(
       endPoint,
@@ -155,6 +158,7 @@ class PharmacyCategoriseService extends BaseService {
         response['products'].forEach((item) {
           _parentProductsList.add(PharmacyProduct.fromJson(item));
         });
+        //pageNumber++;
       },
       onFailure: (String error, int statusCode) {
         hasError = true;

lib/core/viewModels/pharmacy_categorise_view_model.dart

@@ -10,20 +10,36 @@ import 'base_view_model.dart';
 
 class PharmacyCategoriseViewModel extends BaseViewModel {
   bool hasError = false;
-  PharmacyCategoriseService _pharmacyCategoriseService = locator<PharmacyCategoriseService>();
 
-  List<PharmacyCategorise> get categorise => _pharmacyCategoriseService.categoriseList;
+  int firstSubsetIndex = 0;
+  int inPatientPageSize = 20;
+  int lastSubsetIndex = 20;
 
-  List<CategoriseParentModel> get categoriseParent => _pharmacyCategoriseService.parentCategoriseList;
+  List<PharmacyProduct> filteredInPatientItems = List();
+  List<PharmacyProduct> filteredMyInPatientItems = List();
 
-  List<PharmacyProduct> get parentProducts => _pharmacyCategoriseService.parentProductsList;
+  PharmacyCategoriseService _pharmacyCategoriseService =
+      locator<PharmacyCategoriseService>();
 
-  List<CategoriseParentModel> get subCategorise => _pharmacyCategoriseService.subCategoriseList;
+  List<PharmacyCategorise> get categorise =>
+      _pharmacyCategoriseService.categoriseList;
 
-  List<PharmacyProduct> get subProducts => _pharmacyCategoriseService.subProductsList;
+  List<CategoriseParentModel> get categoriseParent =>
+      _pharmacyCategoriseService.parentCategoriseList;
 
-  List<PharmacyProduct> get finalProducts => _pharmacyCategoriseService.finalProducts;
-  List<CategoriseParentModel> get brandsList => _pharmacyCategoriseService.brandsList;
+  List<PharmacyProduct> get parentProducts =>
+      _pharmacyCategoriseService.parentProductsList;
+
+  List<CategoriseParentModel> get subCategorise =>
+      _pharmacyCategoriseService.subCategoriseList;
+
+  List<PharmacyProduct> get subProducts =>
+      _pharmacyCategoriseService.subProductsList;
+
+  List<PharmacyProduct> get finalProducts =>
+      _pharmacyCategoriseService.finalProducts;
+  List<CategoriseParentModel> get brandsList =>
+      _pharmacyCategoriseService.brandsList;
 
   List<PharmacyProduct> get searchList => _pharmacyCategoriseService.searchList;
 
@@ -81,7 +97,7 @@ class PharmacyCategoriseViewModel extends BaseViewModel {
       setState(ViewState.Idle);
   }
 
-  Future getCategoriseParent({String i}) async {
+  Future getCategoriseParent({String i, int pageIndex, bool isLoading}) async {
     hasError = false;
     // _insuranceCardService.clearInsuranceCard();
     setState(ViewState.Busy);
@@ -90,15 +106,16 @@ class PharmacyCategoriseViewModel extends BaseViewModel {
       error = _pharmacyCategoriseService.error;
       setState(ViewState.ErrorLocal);
     } else
-      await getParentProducts(i: i);
-    await getBrands(id: i);
+      await getBrands(id: i);
+    await getParentProducts(i: i, pageIndex: pageIndex, isLoading: isLoading);
   }
 
-  Future getParentProducts({String i}) async {
+  Future getParentProducts({String i, int pageIndex, bool isLoading}) async {
     hasError = false;
     // _insuranceCardService.clearInsuranceCard();
-    setState(ViewState.Busy);
-    await _pharmacyCategoriseService.getParentProducts(id: i);
+    setState(ViewState.BusyLocal);
+    await _pharmacyCategoriseService.getParentProducts(
+        id: i, pageNumber: pageIndex, isLoading: isLoading);
     if (_pharmacyCategoriseService.hasError) {
       error = _pharmacyCategoriseService.error;
       setState(ViewState.ErrorLocal);
@@ -142,11 +159,13 @@ class PharmacyCategoriseViewModel extends BaseViewModel {
       setState(ViewState.Idle);
   }
 
-  Future getFilteredProducts({String categoryId, String brandId, String min, String max}) async {
+  Future getFilteredProducts(
+      {String categoryId, String brandId, String min, String max}) async {
     hasError = false;
     // _insuranceCardService.clearInsuranceCard();
     setState(ViewState.Busy);
-    await _pharmacyCategoriseService.getFilteredProducts(categoryId: categoryId, brandId: brandId, max: max, min: min);
+    await _pharmacyCategoriseService.getFilteredProducts(
+        categoryId: categoryId, brandId: brandId, max: max, min: min);
     if (_pharmacyCategoriseService.hasError) {
       error = _pharmacyCategoriseService.error;
       setState(ViewState.ErrorLocal);
@@ -154,7 +173,8 @@ class PharmacyCategoriseViewModel extends BaseViewModel {
       setState(ViewState.Idle);
   }
 
-  Future getFilteredSubProducts({String categoryId, String brandId, String min, String max}) async {
+  Future getFilteredSubProducts(
+      {String categoryId, String brandId, String min, String max}) async {
     hasError = false;
     // _insuranceCardService.clearInsuranceCard();
     setState(ViewState.Busy);
@@ -221,4 +241,27 @@ class PharmacyCategoriseViewModel extends BaseViewModel {
       setState(ViewState.Idle);
     }
   }
+
+  addOnFilteredList() {
+    if (lastSubsetIndex < parentProducts.length) {
+      firstSubsetIndex = firstSubsetIndex +
+          (parentProducts.length - lastSubsetIndex < inPatientPageSize - 1
+              ? parentProducts.length - lastSubsetIndex
+              : inPatientPageSize - 1);
+      lastSubsetIndex = lastSubsetIndex +
+          (parentProducts.length - lastSubsetIndex < inPatientPageSize - 1
+              ? parentProducts.length - lastSubsetIndex
+              : inPatientPageSize - 1);
+      filteredInPatientItems
+          .addAll(parentProducts.sublist(firstSubsetIndex, lastSubsetIndex));
+      setState(ViewState.Idle);
+    }
+  }
+
+  removeOnFilteredList() {
+    if (lastSubsetIndex - inPatientPageSize - 1 > 0) {
+      filteredInPatientItems.removeAt(lastSubsetIndex - inPatientPageSize - 1);
+      setState(ViewState.Idle);
+    }
+  }
 }

lib/pages/pharmacies/screens/cart-page/cart-order-page.dart

@@ -56,7 +56,7 @@ class _CartOrderPageState extends State<CartOrderPage> {
         showHomeAppBarIcon: false,
         isShowDecPage: false,
         isMainPharmacyPages: true,
-        //isBottomBar: true,
+        isBottomBar: true,
         showPharmacyCart: true,
         baseViewModel: model,
         backgroundColor: Colors.white,

pubspec.yaml

@@ -42,6 +42,9 @@ dependencies:
   # Flutter Html View
   flutter_html: ^1.2.0
 
+  # Pagnation
+  pull_to_refresh: ^1.6.2
+
   # Native
   flutter_device_type: ^0.2.0
   local_auth: ^0.6.2+3