1/*
2 * Copyright (C) 2009 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.camera;
18
19import com.android.camera.ui.PopupManager;
20
21import android.app.Activity;
22import android.app.KeyguardManager;
23import android.content.Context;
24import android.content.Intent;
25import android.content.pm.ActivityInfo;
26import android.hardware.Camera;
27import android.os.Bundle;
28import android.util.Log;
29import android.view.KeyEvent;
30
31/**
32 * Superclass of Camera and VideoCamera activities.
33 */
34abstract public class ActivityBase extends Activity {
35    private static final String TAG = "ActivityBase";
36    private static boolean LOGV = false;
37    private int mResultCodeForTesting;
38    private boolean mOnResumePending;
39    private Intent mResultDataForTesting;
40    protected Camera mCameraDevice;
41
42    @Override
43    public void onCreate(Bundle icicle) {
44        if (Util.isTabletUI()) {
45            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
46        } else {
47            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
48        }
49        super.onCreate(icicle);
50    }
51
52    @Override
53    public void onWindowFocusChanged(boolean hasFocus) {
54        if (LOGV) Log.v(TAG, "onWindowFocusChanged.hasFocus=" + hasFocus
55                + ".mOnResumePending=" + mOnResumePending);
56        if (hasFocus && mOnResumePending) {
57            doOnResume();
58            mOnResumePending = false;
59        }
60    }
61
62    @Override
63    protected void onResume() {
64        super.onResume();
65        // Don't grab the camera if in use by lockscreen. For example, face
66        // unlock may be using the camera. Camera may be already opened in
67        // onCreate. doOnResume should continue if mCameraDevice != null.
68        // Suppose camera app is in the foreground. If users turn off and turn
69        // on the screen very fast, camera app can still have the focus when the
70        // lock screen shows up. The keyguard takes input focus, so the caemra
71        // app will lose focus when it is displayed.
72        if (LOGV) Log.v(TAG, "onResume. hasWindowFocus()=" + hasWindowFocus());
73        if (mCameraDevice == null && isKeyguardLocked()) {
74            if (LOGV) Log.v(TAG, "onResume. mOnResumePending=true");
75            mOnResumePending = true;
76        } else {
77            if (LOGV) Log.v(TAG, "onResume. mOnResumePending=false");
78            doOnResume();
79            mOnResumePending = false;
80        }
81    }
82
83    @Override
84    protected void onPause() {
85        if (LOGV) Log.v(TAG, "onPause");
86        super.onPause();
87        mOnResumePending = false;
88    }
89
90    // Put the code of onResume in this method.
91    abstract protected void doOnResume();
92
93    @Override
94    public boolean onSearchRequested() {
95        return false;
96    }
97
98    @Override
99    public boolean onKeyDown(int keyCode, KeyEvent event) {
100        // Prevent software keyboard or voice search from showing up.
101        if (keyCode == KeyEvent.KEYCODE_SEARCH
102                || keyCode == KeyEvent.KEYCODE_MENU) {
103            if (event.isLongPress()) return true;
104        }
105
106        return super.onKeyDown(keyCode, event);
107    }
108
109    protected void setResultEx(int resultCode) {
110        mResultCodeForTesting = resultCode;
111        setResult(resultCode);
112    }
113
114    protected void setResultEx(int resultCode, Intent data) {
115        mResultCodeForTesting = resultCode;
116        mResultDataForTesting = data;
117        setResult(resultCode, data);
118    }
119
120    public int getResultCode() {
121        return mResultCodeForTesting;
122    }
123
124    public Intent getResultData() {
125        return mResultDataForTesting;
126    }
127
128    @Override
129    protected void onDestroy() {
130        PopupManager.removeInstance(this);
131        super.onDestroy();
132    }
133
134    private boolean isKeyguardLocked() {
135        KeyguardManager kgm = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
136        if (LOGV) {
137            if (kgm != null) {
138                Log.v(TAG, "kgm.isKeyguardLocked()="+kgm.isKeyguardLocked()
139                        + ". kgm.isKeyguardSecure()="+kgm.isKeyguardSecure());
140            }
141        }
142        // isKeyguardSecure excludes the slide lock case.
143        return (kgm != null) && kgm.isKeyguardLocked() && kgm.isKeyguardSecure();
144    }
145}
146