Current File : /home/tradevaly/www/fresh/lib/view/base/custom_app_bar.dart

import 'package:flutter/material.dart';
import 'package:flutter_grocery/provider/category_provider.dart';
import 'package:flutter_grocery/provider/product_provider.dart';
import 'package:flutter_grocery/utill/color_resources.dart';
import 'package:flutter_grocery/utill/dimensions.dart';
import 'package:flutter_grocery/utill/styles.dart';
import 'package:provider/provider.dart';

class CustomAppBar extends StatelessWidget implements PreferredSizeWidget {
  final String title;
  final bool isBackButtonExist;
  final Function onBackPressed;
  final bool isCenter;
  final bool isElevation;
  final bool fromCategoryScreen;
  CustomAppBar({@required this.title, this.isBackButtonExist = true, this.onBackPressed,this.isCenter=true,this.isElevation=false,this.fromCategoryScreen = false});

  @override
  Widget build(BuildContext context) {
    return AppBar(
      title: Text(title, style: poppinsMedium.copyWith(fontSize: Dimensions.FONT_SIZE_LARGE, color: Theme.of(context).textTheme.bodyText1.color)),
      centerTitle: isCenter?true:false,
      leading: isBackButtonExist ? IconButton(
        icon: Icon(Icons.arrow_back_ios),
        color: Theme.of(context).textTheme.bodyText1.color,
        onPressed: () => onBackPressed != null ? onBackPressed() : Navigator.pop(context),
      ) : SizedBox(),
      backgroundColor: Theme.of(context).cardColor,
      elevation: isElevation?2:0,
      actions: [
        fromCategoryScreen ? PopupMenuButton(
            color: ColorResources.getWhiteColor(context),
            elevation: 20,
            enabled: true,
            icon: Icon(Icons.more_vert,color: Colors.black,),
            onSelected: (value) {
              int _index = Provider.of<ProductProvider>(context,listen: false).allSortBy.indexOf(value);
              Provider.of<CategoryProvider>(context,listen: false).setFilterIndex(_index);
              Provider.of<ProductProvider>(context,listen: false).sortCategoryProduct(_index);
            },

            itemBuilder:(context) {
              return Provider.of<ProductProvider>(context,listen: false).allSortBy.map((choice) {
                return PopupMenuItem(
                  value: choice,
                  child: Text("$choice"),
                );
              }).toList();
            }
        ) : SizedBox(),
      ],
    );
  }

  @override
  Size get preferredSize => Size(double.maxFinite, 50);
}