1/*
2 * Copyright (C) 2010 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.internal.app;
18
19import com.android.internal.R;
20
21import android.app.Activity;
22import android.app.ActivityManagerNative;
23import android.content.Intent;
24import android.content.IntentSender;
25import android.content.pm.ApplicationInfo;
26import android.content.pm.PackageManager;
27import android.graphics.drawable.Drawable;
28import android.os.Bundle;
29import android.os.RemoteException;
30import android.util.Log;
31import android.util.TypedValue;
32import android.view.View;
33import android.view.Window;
34import android.view.View.OnClickListener;
35import android.widget.ImageView;
36import android.widget.TextView;
37
38/**
39 * This activity is displayed when the system attempts to start an Intent for
40 * which there is more than one matching activity, allowing the user to decide
41 * which to go to.  It is not normally used directly by application developers.
42 */
43public class HeavyWeightSwitcherActivity extends Activity {
44    /** The PendingIntent of the new activity being launched. */
45    public static final String KEY_INTENT = "intent";
46    /** Set if the caller is requesting a result. */
47    public static final String KEY_HAS_RESULT = "has_result";
48    /** Package of current heavy-weight app. */
49    public static final String KEY_CUR_APP = "cur_app";
50    /** Task that current heavy-weight activity is running in. */
51    public static final String KEY_CUR_TASK = "cur_task";
52    /** Package of newly requested heavy-weight app. */
53    public static final String KEY_NEW_APP = "new_app";
54
55    IntentSender mStartIntent;
56    boolean mHasResult;
57    String mCurApp;
58    int mCurTask;
59    String mNewApp;
60
61    @Override
62    protected void onCreate(Bundle savedInstanceState) {
63        super.onCreate(savedInstanceState);
64
65        requestWindowFeature(Window.FEATURE_LEFT_ICON);
66
67        mStartIntent = (IntentSender)getIntent().getParcelableExtra(KEY_INTENT);
68        mHasResult = getIntent().getBooleanExtra(KEY_HAS_RESULT, false);
69        mCurApp = getIntent().getStringExtra(KEY_CUR_APP);
70        mCurTask = getIntent().getIntExtra(KEY_CUR_TASK, 0);
71        mNewApp = getIntent().getStringExtra(KEY_NEW_APP);
72
73        setContentView(com.android.internal.R.layout.heavy_weight_switcher);
74
75        setIconAndText(R.id.old_app_icon, R.id.old_app_action, R.id.old_app_description,
76                mCurApp, R.string.old_app_action, R.string.old_app_description);
77        setIconAndText(R.id.new_app_icon, R.id.new_app_action, R.id.new_app_description,
78                mNewApp, R.string.new_app_action, R.string.new_app_description);
79
80        View button = findViewById((R.id.switch_old));
81        button.setOnClickListener(mSwitchOldListener);
82        button = findViewById((R.id.switch_new));
83        button.setOnClickListener(mSwitchNewListener);
84        button = findViewById((R.id.cancel));
85        button.setOnClickListener(mCancelListener);
86
87        TypedValue out = new TypedValue();
88        getTheme().resolveAttribute(android.R.attr.alertDialogIcon, out, true);
89        getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,
90                out.resourceId);
91    }
92
93    void setText(int id, CharSequence text) {
94        ((TextView)findViewById(id)).setText(text);
95    }
96
97    void setDrawable(int id, Drawable dr) {
98        if (dr != null) {
99            ((ImageView)findViewById(id)).setImageDrawable(dr);
100        }
101    }
102
103    void setIconAndText(int iconId, int actionId, int descriptionId,
104            String packageName, int actionStr, int descriptionStr) {
105        CharSequence appName = "";
106        Drawable appIcon = null;
107        if (mCurApp != null) {
108            try {
109                ApplicationInfo info = getPackageManager().getApplicationInfo(
110                        packageName, 0);
111                appName = info.loadLabel(getPackageManager());
112                appIcon = info.loadIcon(getPackageManager());
113            } catch (PackageManager.NameNotFoundException e) {
114            }
115        }
116
117        setDrawable(iconId, appIcon);
118        setText(actionId, getString(actionStr, appName));
119        setText(descriptionId, getText(descriptionStr));
120    }
121
122    private OnClickListener mSwitchOldListener = new OnClickListener() {
123        public void onClick(View v) {
124            try {
125                ActivityManagerNative.getDefault().moveTaskToFront(mCurTask, 0, null);
126            } catch (RemoteException e) {
127            }
128            finish();
129        }
130    };
131
132    private OnClickListener mSwitchNewListener = new OnClickListener() {
133        public void onClick(View v) {
134            try {
135                ActivityManagerNative.getDefault().finishHeavyWeightApp();
136            } catch (RemoteException e) {
137            }
138            try {
139                if (mHasResult) {
140                    startIntentSenderForResult(mStartIntent, -1, null,
141                            Intent.FLAG_ACTIVITY_FORWARD_RESULT,
142                            Intent.FLAG_ACTIVITY_FORWARD_RESULT, 0);
143                } else {
144                    startIntentSenderForResult(mStartIntent, -1, null, 0, 0, 0);
145                }
146            } catch (IntentSender.SendIntentException ex) {
147                Log.w("HeavyWeightSwitcherActivity", "Failure starting", ex);
148            }
149            finish();
150        }
151    };
152
153    private OnClickListener mCancelListener = new OnClickListener() {
154        public void onClick(View v) {
155            finish();
156        }
157    };
158}
159