Adapters

Adapters Doc 1.0

Summary

Contains adapters for all our scrollable views, for dynamic population of data models. These classes also contain view holders for their associated UI elements, but will probably separate this out in the future for more clarity.

Here are some standard adapters and how they are implemented.

FoodAdapter.java

Used in MenuFragment as the adapter of FoodItems for each Cafe or Dining Hall's (FoodPlace) menu items. Number of FoodAdapters is equal to the number of menus a FoodPlace.

Switches on if Cafe or Dining Hall, based on constructor arguments. Then sets proper UI elements:

• Dining Hall food items have food types
• Cafe food items have prices

Also includes favorite button, which resorts list of food items on click.

imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (listOfFavorites != null && listOfFavorites.contains(foodItem.getName())) {
                    listOfFavorites.remove(foodItem.getName());
                    SerializableUtilities.saveObject(context, listOfFavorites);
                    imageView.setImageResource(R.drawable.pre_favorite);

                } else if (listOfFavorites != null) {
                    listOfFavorites.add(foodItem.getName());
                    SerializableUtilities.saveObject(context, listOfFavorites);
                    imageView.setImageResource(R.drawable.post_favorite);

                    mFirebaseAnalytics = FirebaseAnalytics.getInstance(FoodAdapter.this.context);
                    Bundle bundle = new Bundle();
                    bundle.putString("food_item", foodItem.getName());
                    mFirebaseAnalytics.logEvent("favorited_food_item", bundle);
                }

                if (foodType == FoodPlaceAdapter.FoodType.Cafe) {
                    Collections.sort(foodItems, CustomComparators.FacilityComparators.getFoodSortByFavorite(OpenCafeActivity.selfReference));
                } else if (foodType == FoodPlaceAdapter.FoodType.DiningHall) {
                    Collections.sort(foodItems, CustomComparators.FacilityComparators.getFoodSortByFavorite(OpenDiningHallActivity.selfReference));
                }

                MenuFragment.refreshLists();
            }
        });

FoodPlaceAdapter.java

Defines FoodType enum that serves as switch for later UI stuff. Defines view holder for FoodPlaces for Dining Halls and Cafes cards to display on the FoodFragment screen. Clicking on cards launches the respective Open*Activity.java for Dining Hall of Cafe.

 public ViewHolder(View itemView) {
            super(itemView);
            nameTextView = (TextView) itemView.findViewById(R.id.name);
            imageView = (ImageView) itemView.findViewById(R.id.image);
            openStatusTextView = (TextView) itemView.findViewById(R.id.open_status);

            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent intent;

                    // set the current cafe/dining hall and start the right intent
                    if (foodType == FoodType.Cafe) {
                        Cafe cafe = (Cafe) mFoodPlaceList.get(getAdapterPosition());
                        OpenCafeActivity.setCafe(cafe);
                        intent = new Intent(mContext, OpenCafeActivity.class);
                        mContext.startActivity(intent);
                    } else if (foodType == FoodType.DiningHall) {
                        DiningHall diningHall = (DiningHall) mFoodPlaceList.get(getAdapterPosition());
                        OpenDiningHallActivity.setDiningHall(diningHall);
                        intent = new Intent(mContext, OpenDiningHallActivity.class);
                        mContext.startActivity(intent);
                    }

                }
            });
        }

Similar to GymAdapter.java in the card view design. Possibly modularize this in the future.

Above references view and sets onClickListener for the entire card. On click, switches on food tpe and creates the appropriate intent for launching Open*Activity.java

LibraryAdapter.java

Important feature is the filter, that returns a list of Librarys given a search string. Searches all Library objects fetched, depending on name of library. Possibly to search for other fields as well, including location or description, but might be confusing to users.

Also features favorite button, as with some other list adapters, and auto sorts based on favorites and AZ. This style of adapter is pretty standard, and a variant is used for ResourceAdapter.java as well. Possible to standardize this and make it more modular.

MainMenuAdapter.java

Defines adapter for Categorys in the main menu (navigation drawer really). The name is misleading imo, and probably need a better main menu splash screen instead of having the user see an open nav drawer as the first screen on launch.