SettingsActivity.java revision 76cffec78834a2db525608587eae1a5a7ef998dd 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.inputmethod.latin.settings;
18
19import com.android.inputmethod.latin.utils.FragmentUtils;
20
21import android.app.ActionBar;
22import android.content.Intent;
23import android.os.Bundle;
24import android.preference.PreferenceActivity;
25import android.view.MenuItem;
26
27public final class SettingsActivity extends PreferenceActivity {
28    public static final String EXTRA_SHOW_HOME_AS_UP = "show_home_as_up";
29    private static final String DEFAULT_FRAGMENT = SettingsFragment.class.getName();
30    private boolean mShowHomeAsUp;
31
32    @Override
33    protected void onCreate(final Bundle savedState) {
34        super.onCreate(savedState);
35        final ActionBar actionBar = getActionBar();
36        if (actionBar != null) {
37            mShowHomeAsUp = getIntent().getBooleanExtra(EXTRA_SHOW_HOME_AS_UP, true);
38            actionBar.setDisplayHomeAsUpEnabled(mShowHomeAsUp);
39            actionBar.setHomeButtonEnabled(mShowHomeAsUp);
40        }
41    }
42
43    @Override
44    public boolean onOptionsItemSelected(final MenuItem item) {
45        if (mShowHomeAsUp && item.getItemId() == android.R.id.home) {
46            finish();
47            return true;
48        }
49        return super.onOptionsItemSelected(item);
50    }
51
52    @Override
53    public Intent getIntent() {
54        final Intent intent = super.getIntent();
55        final String fragment = intent.getStringExtra(EXTRA_SHOW_FRAGMENT);
56        if (fragment == null) {
57            intent.putExtra(EXTRA_SHOW_FRAGMENT, DEFAULT_FRAGMENT);
58        }
59        intent.putExtra(EXTRA_NO_HEADERS, true);
60        return intent;
61    }
62
63    @Override
64    public boolean isValidFragment(final String fragmentName) {
65        return FragmentUtils.isValidFragment(fragmentName);
66    }
67}
68