/** Cleanup when the activity is destroyed. */
@Override
public void onDestroy() {
super.onDestroy();
mActiveListItemAdapter.cleanup();
mCurrentListRef.removeEventListener(mCurrentListRefListener);
mCurrentUserRef.removeEventListener(mCurrentUserRefListener);
mSharedWithRef.removeEventListener(mSharedWithListener);
}
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_active_list_details);
/* Get the push ID from the extra passed by ShoppingListFragment */
Intent intent = this.getIntent();
mListId = intent.getStringExtra(Constants.KEY_LIST_ID);
if (mListId == null) {
/* No point in continuing without a valid ID. */
finish();
return;
}
/** Create Firebase references */
mCurrentListRef =
new Firebase(Constants.FIREBASE_URL_USER_LISTS).child(mEncodedEmail).child(mListId);
mCurrentUserRef = new Firebase(Constants.FIREBASE_URL_USERS).child(mEncodedEmail);
mSharedWithRef = new Firebase(Constants.FIREBASE_URL_LISTS_SHARED_WITH).child(mListId);
Firebase listItemsRef = new Firebase(Constants.FIREBASE_URL_SHOPPING_LIST_ITEMS).child(mListId);
/** Link layout elements from XML and setup the toolbar */
initializeScreen();
/** Setup the adapter */
mActiveListItemAdapter =
new ActiveListItemAdapter(
this,
ShoppingListItem.class,
R.layout.single_active_list_item,
listItemsRef.orderByChild(Constants.FIREBASE_PROPERTY_BOUGHT_BY),
mListId,
mEncodedEmail);
/* Create ActiveListItemAdapter and set to listView */
mListView.setAdapter(mActiveListItemAdapter);
/**
* Add ValueEventListeners to Firebase references to control get data and control behavior and
* visibility of elements
*/
/* Save the most up-to-date version of current user in mCurrentUser */
mCurrentUserRefListener =
mCurrentUserRef.addValueEventListener(
new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
User currentUser = dataSnapshot.getValue(User.class);
if (currentUser != null) mCurrentUser = currentUser;
else finish();
}
@Override
public void onCancelled(FirebaseError firebaseError) {
Log.e(
LOG_TAG,
getString(R.string.log_error_the_read_failed) + firebaseError.getMessage());
}
});
final Activity thisActivity = this;
/**
* Save the most recent version of current shopping list into mShoppingList instance variable an
* update the UI to match the current list.
*/
mCurrentListRefListener =
mCurrentListRef.addValueEventListener(
new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot snapshot) {
/**
* Saving the most recent version of current shopping list into mShoppingList if
* present finish() the activity if the list is null (list was removed or unshared
* by it's owner while current user is in the list details activity)
*/
ShoppingList shoppingList = snapshot.getValue(ShoppingList.class);
if (shoppingList == null) {
finish();
/**
* Make sure to call return, otherwise the rest of the method will execute, even
* after calling finish.
*/
return;
}
mShoppingList = shoppingList;
/**
* Pass the shopping list to the adapter if it is not null. We do this here because
* mShoppingList is null when first created.
*/
mActiveListItemAdapter.setShoppingList(mShoppingList);
/* Check if the current user is owner */
mCurrentUserIsOwner = Utils.checkIfOwner(shoppingList, mEncodedEmail);
/* Calling invalidateOptionsMenu causes onCreateOptionsMenu to be called */
invalidateOptionsMenu();
/* Set title appropriately. */
setTitle(shoppingList.getListName());
HashMap<String, User> usersShopping = mShoppingList.getUsersShopping();
if (usersShopping != null
&& usersShopping.size() != 0
&& usersShopping.containsKey(mEncodedEmail)) {
mShopping = true;
mButtonShopping.setText(getString(R.string.button_stop_shopping));
mButtonShopping.setBackgroundColor(
ContextCompat.getColor(ActiveListDetailsActivity.this, R.color.dark_grey));
} else {
mButtonShopping.setText(getString(R.string.button_start_shopping));
mButtonShopping.setBackgroundColor(
ContextCompat.getColor(ActiveListDetailsActivity.this, R.color.primary_dark));
mShopping = false;
}
setWhosShoppingText(mShoppingList.getUsersShopping());
}
@Override
public void onCancelled(FirebaseError firebaseError) {
Log.e(
LOG_TAG,
getString(R.string.log_error_the_read_failed) + firebaseError.getMessage());
}
});
mSharedWithListener =
mSharedWithRef.addValueEventListener(
new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
mSharedWithUsers = new HashMap<String, User>();
for (DataSnapshot currentUser : dataSnapshot.getChildren()) {
mSharedWithUsers.put(currentUser.getKey(), currentUser.getValue(User.class));
}
mActiveListItemAdapter.setSharedWithUsers(mSharedWithUsers);
}
@Override
public void onCancelled(FirebaseError firebaseError) {
Log.e(
LOG_TAG,
getString(R.string.log_error_the_read_failed) + firebaseError.getMessage());
}
});
/** Set up click listeners for interaction. */
/* Show edit list item name dialog on listView item long click event */
mListView.setOnItemLongClickListener(
new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
/* Check that the view is not the empty footer item */
if (view.getId() != R.id.list_view_footer_empty) {
ShoppingListItem shoppingListItem = mActiveListItemAdapter.getItem(position);
if (shoppingListItem != null) {
/*
If the person is the owner and not shopping and the item is not bought, then
they can edit it.
*/
if (shoppingListItem.getOwner().equals(mEncodedEmail)
&& !mShopping
&& !shoppingListItem.isBought()) {
String itemName = shoppingListItem.getItemName();
String itemId = mActiveListItemAdapter.getRef(position).getKey();
showEditListItemNameDialog(itemName, itemId);
return true;
}
}
}
return false;
}
});
/* Perform buy/return action on listView item click event if current user is shopping. */
mListView.setOnItemClickListener(
new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
/* Check that the view is not the empty footer item */
if (view.getId() != R.id.list_view_footer_empty) {
final ShoppingListItem selectedListItem = mActiveListItemAdapter.getItem(position);
String itemId = mActiveListItemAdapter.getRef(position).getKey();
if (selectedListItem != null) {
/* If current user is shopping */
if (mShopping) {
/* Create map and fill it in with deep path multi write operations list */
HashMap<String, Object> updatedItemBoughtData = new HashMap<String, Object>();
/* Buy selected item if it is NOT already bought */
if (!selectedListItem.isBought()) {
updatedItemBoughtData.put(Constants.FIREBASE_PROPERTY_BOUGHT, true);
updatedItemBoughtData.put(Constants.FIREBASE_PROPERTY_BOUGHT_BY, mEncodedEmail);
} else {
/* Return selected item only if it was bought by current user */
if (selectedListItem.getBoughtBy().equals(mEncodedEmail)) {
updatedItemBoughtData.put(Constants.FIREBASE_PROPERTY_BOUGHT, false);
updatedItemBoughtData.put(Constants.FIREBASE_PROPERTY_BOUGHT_BY, null);
}
}
/* Do update */
Firebase firebaseItemLocation =
new Firebase(Constants.FIREBASE_URL_SHOPPING_LIST_ITEMS)
.child(mListId)
.child(itemId);
firebaseItemLocation.updateChildren(
updatedItemBoughtData,
new Firebase.CompletionListener() {
@Override
public void onComplete(FirebaseError firebaseError, Firebase firebase) {
if (firebaseError != null) {
Log.d(
LOG_TAG,
getString(R.string.log_error_updating_data)
+ firebaseError.getMessage());
}
}
});
}
}
}
}
});
}