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/*
* Copyright 2016, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.architecture.blueprints.todoapp.addedittask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.ActionBar;
import android.support.v7.widget.Toolbar;
import com.example.android.architecture.blueprints.todoapp.R;
import com.example.android.architecture.blueprints.todoapp.util.ActivityUtils;
import javax.inject.Inject;
import dagger.android.support.DaggerAppCompatActivity;
/**
* Displays an add or edit task screen.
*/
public class AddEditTaskActivity extends DaggerAppCompatActivity {
public static final int REQUEST_ADD_TASK = 1;
public static final String SHOULD_LOAD_DATA_FROM_REPO_KEY = "SHOULD_LOAD_DATA_FROM_REPO_KEY";
@Inject
AddEditTaskContract.Presenter mAddEditTasksPresenter;
@Inject
AddEditTaskFragment mFragment;
@Inject
@Nullable
String mTaskId;
private ActionBar mActionBar;
// In a rotation it's important to know if we want to let the framework restore view state or
// need to load data from the repository. This is saved into the state bundle.
private boolean mIsDataMissing = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.addtask_act);
// Set up the toolbar.
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mActionBar = getSupportActionBar();
mActionBar.setDisplayHomeAsUpEnabled(true);
mActionBar.setDisplayShowHomeEnabled(true);
setToolbarTitle(mTaskId);
AddEditTaskFragment addEditTaskFragment =
(AddEditTaskFragment) getSupportFragmentManager().findFragmentById(R.id.contentFrame);
if (addEditTaskFragment == null) {
addEditTaskFragment = mFragment;
ActivityUtils.addFragmentToActivity(getSupportFragmentManager(),
addEditTaskFragment, R.id.contentFrame);
}
restoreState(savedInstanceState);
}
private void restoreState(Bundle savedInstanceState) {
// Prevent the presenter from loading data from the repository if this is a config change.
if (savedInstanceState != null) {
// Data might not have loaded when the config change happen, so we saved the state.
mIsDataMissing = savedInstanceState.getBoolean(SHOULD_LOAD_DATA_FROM_REPO_KEY);
}
}
private void setToolbarTitle(@Nullable String taskId) {
if(taskId == null) {
mActionBar.setTitle(R.string.add_task);
} else {
mActionBar.setTitle(R.string.edit_task);
}
}
@Override
protected void onSaveInstanceState(Bundle outState) {
// Save the state so that next time we know if we need to refresh data.
outState.putBoolean(SHOULD_LOAD_DATA_FROM_REPO_KEY, mAddEditTasksPresenter.isDataMissing());
super.onSaveInstanceState(outState);
}
@Override
public boolean onSupportNavigateUp() {
onBackPressed();
return true;
}
boolean isDataMissing() {
return mIsDataMissing;
}
}