AccountSelectorActivity.java

/*
 * 				Firetweet - Twitter client for Android
 * 
 *  Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.getlantern.firetweet.activity.support;

import android.app.LoaderManager.LoaderCallbacks;
import android.content.CursorLoader;
import android.content.Intent;
import android.content.Loader;
import android.content.SharedPreferences;
import android.database.ContentObserver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;

import org.apache.commons.lang3.ArrayUtils;
import org.getlantern.firetweet.R;
import org.getlantern.firetweet.adapter.AccountsAdapter;
import org.getlantern.firetweet.provider.FiretweetDataStore.Accounts;

public class AccountSelectorActivity extends BaseSupportDialogActivity implements LoaderCallbacks<Cursor>,
        OnClickListener, OnItemClickListener {

    private final ContentObserver mContentObserver = new ContentObserver(null) {

        @Override
        public void onChange(final boolean selfChange) {
            onChange(selfChange, null);
        }

        @Override
        public void onChange(final boolean selfChange, final Uri uri) {
            // Handle change.
            if (!isFinishing()) {
                getLoaderManager().restartLoader(0, null, AccountSelectorActivity.this);
            }
        }
    };

    private SharedPreferences mPreferences;

    private ListView mListView;
    private AccountsAdapter mAdapter;

    private boolean mFirstCreated;

    private View mSelectAccountButtons;

    @Override
    public void onClick(final View view) {
        switch (view.getId()) {
            case R.id.save: {
                final long[] checkedIds = mListView.getCheckedItemIds();
                if (checkedIds.length == 0 && !isSelectNoneAllowed()) {
                    Toast.makeText(this, R.string.no_account_selected, Toast.LENGTH_SHORT).show();
                    return;
                }
                final Intent data = new Intent();
                data.putExtra(EXTRA_IDS, checkedIds);
                setResult(RESULT_OK, data);
                finish();
                break;
            }
        }
    }

    @Override
    public void onContentChanged() {
        super.onContentChanged();
        mListView = (ListView) findViewById(android.R.id.list);
        mSelectAccountButtons = findViewById(R.id.select_account_buttons);
    }

    @Override
    public Loader<Cursor> onCreateLoader(final int id, final Bundle args) {
        final String where = isOAuthOnly() ? Accounts.AUTH_TYPE + " = " + Accounts.AUTH_TYPE_OAUTH : null;
        return new CursorLoader(this, Accounts.CONTENT_URI, Accounts.COLUMNS, where, null, null);
    }

    @Override
    public void onLoadFinished(final Loader<Cursor> loader, final Cursor cursor) {
        mAdapter.swapCursor(cursor);
        if (cursor != null && mFirstCreated) {
            final long[] activatedIds = getIntentExtraIds();
            for (int i = 0, j = mAdapter.getCount(); i < j; i++) {
                mListView.setItemChecked(i, ArrayUtils.contains(activatedIds, mAdapter.getItemId(i)));
            }
        }
    }

    @Override
    public void onLoaderReset(final Loader<Cursor> loader) {
        mAdapter.swapCursor(null);
    }

    @Override
    public void onItemClick(final AdapterView<?> parent, final View view, final int position, final long id) {
        final Intent data = new Intent();
        data.putExtra(EXTRA_ID, mAdapter.getAccount(position).account_id);
        setResult(RESULT_OK, data);
        finish();
    }

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mFirstCreated = savedInstanceState == null;
        mPreferences = getSharedPreferences(SHARED_PREFERENCES_NAME, MODE_PRIVATE);
        setContentView(R.layout.activity_account_selector);
        mAdapter = new AccountsAdapter(this);
        final boolean isSingleSelection = isSingleSelection();
        mListView.setChoiceMode(isSingleSelection ? ListView.CHOICE_MODE_NONE : ListView.CHOICE_MODE_MULTIPLE);
        mAdapter.setChoiceMode(mListView.getChoiceMode());
        mAdapter.setSortEnabled(false);
        if (isSingleSelection) {
            mListView.setOnItemClickListener(this);
        }
        mSelectAccountButtons.setVisibility(isSingleSelection ? View.GONE : View.VISIBLE);
        mListView.setAdapter(mAdapter);
        getLoaderManager().initLoader(0, null, this);

    }

    @Override
    protected void onStart() {
        super.onStart();
        getContentResolver().registerContentObserver(Accounts.CONTENT_URI, true, mContentObserver);
    }

    @Override
    protected void onResume() {
        super.onResume();
        final boolean displayProfileImage = mPreferences.getBoolean(KEY_DISPLAY_PROFILE_IMAGE, true);
        mAdapter.setDisplayProfileImage(displayProfileImage);
    }

    @Override
    protected void onStop() {
        getContentResolver().unregisterContentObserver(mContentObserver);
        super.onStop();
    }

    private long[] getIntentExtraIds() {
        final Intent intent = getIntent();
        return intent.getLongArrayExtra(EXTRA_IDS);
    }

    private boolean isOAuthOnly() {
        final Intent intent = getIntent();
        return intent.getBooleanExtra(EXTRA_OAUTH_ONLY, false);
    }

    private boolean isSelectNoneAllowed() {
        final Intent intent = getIntent();
        return intent.getBooleanExtra(EXTRA_ALLOW_SELECT_NONE, false);
    }

    private boolean isSingleSelection() {
        final Intent intent = getIntent();
        return intent.getBooleanExtra(EXTRA_SINGLE_SELECTION, false);
    }

}