| // Copyright 2016 The Vanadium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package io.v.todos; |
| |
| import android.content.Intent; |
| import android.os.Bundle; |
| import android.support.annotation.VisibleForTesting; |
| import android.support.v7.widget.RecyclerView; |
| import android.support.v7.widget.helper.ItemTouchHelper; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.View; |
| |
| import java.util.List; |
| |
| import io.v.todos.model.DataList; |
| import io.v.todos.model.ListMetadata; |
| import io.v.todos.model.ListSpec; |
| import io.v.todos.persistence.ListEventListener; |
| import io.v.todos.persistence.MainPersistence; |
| import io.v.todos.persistence.PersistenceFactory; |
| |
| /** |
| * MainActivity for Vanadium TODOs |
| * |
| * This activity shows a list of todo lists. |
| * - Tap on a Todo List to launch its corresponding TodoListActivity. |
| * - Swipe Left on a Todo List to delete it. |
| * - Swipe Right in order to mark all of its Tasks as done. |
| * |
| * @author alexfandrianto |
| */ |
| public class MainActivity extends TodosAppActivity<MainPersistence, TodoListRecyclerAdapter> { |
| // Snackoos are the code name for the list of todos. |
| // These todos are backed up at the SNACKOOS child of the Firebase URL. |
| // We use mMainList to track a custom sorted list of the stored values. |
| static final String INTENT_SNACKOO_KEY = "snackoo key"; |
| private DataList<ListMetadata> mMainList = new DataList<>(); |
| |
| private RecyclerView mRecyclerView; |
| |
| @Override |
| protected void onCreate(final Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| getActionBar().setTitle(R.string.app_name); |
| mEmptyView.setText(R.string.no_lists); |
| |
| // Set up the todo list adapter |
| mAdapter = new TodoListRecyclerAdapter(mMainList, new View.OnClickListener() { |
| @Override |
| public void onClick(View view) { |
| String fbKey = (String)view.getTag(); |
| |
| Intent intent = new Intent(MainActivity.this, TodoListActivity.class); |
| intent.putExtra(INTENT_SNACKOO_KEY, fbKey); |
| startActivity(intent); |
| } |
| }); |
| |
| mRecyclerView = (RecyclerView)findViewById(R.id.recycler); |
| mRecyclerView.setAdapter(mAdapter); |
| mRecyclerView.setHasFixedSize(true); |
| |
| new ItemTouchHelper(new SwipeableTouchHelperCallback() { |
| @Override |
| public void onSwiped(final RecyclerView.ViewHolder viewHolder, final int direction) { |
| String todoListKey = (String)viewHolder.itemView.getTag(); |
| if (direction == ItemTouchHelper.RIGHT) { |
| int position = mMainList.findIndexByKey(todoListKey); |
| if (position == -1) { |
| return; |
| } |
| ListMetadata l = mMainList.get(position); |
| if (l.canCompleteAll()) { |
| mPersistence.setCompletion(l, true); |
| } else if (l.numTasks > 0) { |
| mPersistence.setCompletion(l, false); |
| } else { |
| mAdapter.notifyItemChanged(position); |
| } |
| } else if (direction == ItemTouchHelper.LEFT) { |
| mPersistence.deleteTodoList(todoListKey); |
| } |
| } |
| }).attachToRecyclerView(mRecyclerView); |
| |
| new PersistenceInitializer<MainPersistence>(this) { |
| @Override |
| protected MainPersistence initPersistence() throws Exception { |
| return PersistenceFactory.getMainPersistence(mActivity, savedInstanceState, |
| createMainListener()); |
| } |
| |
| @Override |
| protected void onSuccess(MainPersistence persistence) { |
| mPersistence = persistence; |
| setEmptyVisiblity(); |
| } |
| }.execute(PersistenceFactory.mightGetMainPersistenceBlock()); |
| } |
| |
| // Creates a listener for this activity. Visible to tests to allow them to invoke the listener |
| // methods directly. |
| @VisibleForTesting |
| ListEventListener<ListMetadata> createMainListener() { |
| return new ListEventListener<ListMetadata>() { |
| @Override |
| public void onItemAdd(ListMetadata item) { |
| int position = mMainList.insertInOrder(item); |
| |
| mAdapter.notifyItemInserted(position); |
| setEmptyVisiblity(); |
| } |
| |
| @Override |
| public void onItemUpdate(final ListMetadata item) { |
| int start = mMainList.findIndexByKey(item.key); |
| int end = mMainList.updateInOrder(item); |
| |
| if (start != end) { |
| mAdapter.notifyItemMoved(start, end); |
| } |
| |
| // The change animation involves a cross-fade that, if interrupted |
| // while another for the same item is already in progress, interacts |
| // badly with ItemTouchHelper's swipe animator. The effect would be |
| // a flicker of the intermediate ListMetadata view, then it fading |
| // out to the latest view but X-translated off the screen due to the |
| // swipe animator. |
| // |
| // We could queue up the next change after the current one, but it's |
| // probably better just to rebind. |
| TodoListViewHolder vh = (TodoListViewHolder) mRecyclerView |
| .findViewHolderForAdapterPosition(end); |
| if (vh.itemView.getAlpha() < 1) { |
| mAdapter.bindViewHolder(vh, end); |
| } else { |
| mAdapter.notifyItemChanged(end); |
| } |
| } |
| |
| @Override |
| public void onItemDelete(String key) { |
| int position = mMainList.removeByKey(key); |
| |
| mAdapter.notifyItemRemoved(position); |
| setEmptyVisiblity(); |
| } |
| }; |
| } |
| |
| public void initiateItemAdd(View view) { |
| UIUtil.showAddDialog(this, "New Todo List", new UIUtil.DialogResponseListener() { |
| @Override |
| public void handleResponse(String response) { |
| mPersistence.addTodoList(new ListSpec(response)); |
| } |
| }); |
| } |
| |
| // The following methods are boilerplate for handling the Menu in the top right corner. |
| @Override |
| public boolean onCreateOptionsMenu(Menu menu) { |
| // Inflate the menu; this adds items to the action bar if it is present. |
| getMenuInflater().inflate(R.menu.menu_main, menu); |
| return true; |
| } |
| |
| @Override |
| public boolean onOptionsItemSelected(MenuItem item) { |
| // Handle action bar item clicks here. The action bar will |
| // automatically handle clicks on the Home/Up button, so long |
| // as you specify a parent activity in AndroidManifest.xml. |
| int id = item.getItemId(); |
| |
| //noinspection SimplifiableIfStatement |
| if (id == R.id.action_settings) { |
| return true; |
| } |
| |
| return super.onOptionsItemSelected(item); |
| } |
| } |