/*
* Copyright 2014 Artem Chikin
* Copyright 2014 Artem Herasymchuk
* Copyright 2014 Tom Krywitsky
* Copyright 2014 Henry Pabst
* Copyright 2014 Bradley Simons
*
* 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 ca.ualberta.cmput301w14t08.geochan.fragments;
import android.app.ActionBar;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentManager.OnBackStackChangedListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import ca.ualberta.cmput301w14t08.geochan.R;
/**
* Displays user's favourited threads/comments, provides navigation to each via
* a spinner.
*
* @author Artem Chikin
*
*/
public class FavouritesFragment extends Fragment implements ActionBar.OnNavigationListener,
OnBackStackChangedListener {
private static ActionBar actionBar;
private static final String STATE_SELECTED_NAVIGATION_ITEM = "selected_navigation_item";
/**
* Set up the fragment, action bar and the spinner.
*
* @param inflater The LayoutInflater used to inflate the fragment's UI.
* @param container The parent View that the fragment's UI is attached to.
* @param savedInstanceState The previously saved state of the fragment.
* @return The View for the fragment's UI.
*
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
// Get which counter requested this activity
// Intent intent = getIntent();
// Set up the action bar to show a dropdown list.
actionBar = getActivity().getActionBar();
enableSpinner();
// Show the Up button in the action bar.
actionBar.setDisplayHomeAsUpEnabled(true);
// Set up the dropdown list navigation in the action bar.
actionBar.setListNavigationCallbacks(
// Specify a SpinnerAdapter to populate the dropdown list.
new ArrayAdapter<String>(actionBar.getThemedContext(),
android.R.layout.simple_list_item_1, android.R.id.text1,
new String[] { getString(R.string.threads_fav),
getString(R.string.comments_fav), }), this);
return inflater.inflate(R.layout.fragment_favourites, container, false);
}
/**
* Restore spinner state from savedInstanceState.
* @param savedInstanceState The previously saved state of the fragment.
*
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Restore the previously serialized current dropdown position.
if (savedInstanceState != null) {
if (savedInstanceState.containsKey(STATE_SELECTED_NAVIGATION_ITEM)) {
actionBar.setSelectedNavigationItem(savedInstanceState
.getInt(STATE_SELECTED_NAVIGATION_ITEM));
}
}
getChildFragmentManager().addOnBackStackChangedListener(this);
}
/**
* Save spinner selection.
*
* @param outState The Bundle for data to be saved to.
*
*/
@Override
public void onSaveInstanceState(Bundle outState) {
// Serialize the current dropdown position.
outState.putInt(STATE_SELECTED_NAVIGATION_ITEM, actionBar.getSelectedNavigationIndex());
super.onSaveInstanceState(outState);
}
/**
* Disables the spinner.
*/
@Override
public void onPause() {
super.onPause();
disableSpinner();
}
/**
* Calls onActivityResult on the PostFragment previously being used by the user. A
* workaround for onActivityResult not being called on child fragments, so instead when
* favourites are involved we call it on the parent fragment then delegate back to
* the child fragment.
*
* @param requestCode The requestCode given in startActivityForResult.
* @param resultCode The code returned by the activity.
* @param data Data returned by the activity.
*/
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
FragmentManager childManager = getChildFragmentManager();
PostFragment postFrag = (PostFragment) childManager.findFragmentByTag("postFrag");
postFrag.onActivityResult(requestCode, resultCode, data);
}
/**
* On spinner selection, inflate correct favourites fragment.
* @param position The position of the navigation item.
* @param id The ID of the navigation item.
*/
@Override
public boolean onNavigationItemSelected(int position, long id) {
switch (position) {
case 0:
Fragment thrFragment = new FavouriteThreadsFragment();
getChildFragmentManager().beginTransaction()
.replace(R.id.container, thrFragment, "favThrFragment").commit();
break;
case 1:
Fragment cmtFragment = new FavouriteCommentsFragment();
getChildFragmentManager().beginTransaction()
.replace(R.id.container, cmtFragment, "favComFragment").commit();
break;
}
return true;
}
/**
* Enable/disable spinner if in fragment.
*/
@Override
public void onBackStackChanged() {
Fragment f = getChildFragmentManager().findFragmentByTag("thread_view_fragment");
if (f != null) {
disableSpinner();
} else {
enableSpinner();
}
}
/**
* Enable the spinner.
*/
private void enableSpinner() {
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
}
/**
* Disable the spinner.
*/
private void disableSpinner() {
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(true);
}
}