ChooserActivity.java revision 145b0cad4271a25988602b1ae24137319b10fb16 
1/*
2 * Copyright (C) 2008 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 android.animation.ObjectAnimator;
20import android.annotation.NonNull;
21import android.app.Activity;
22import android.content.ComponentName;
23import android.content.Context;
24import android.content.Intent;
25import android.content.IntentSender;
26import android.content.IntentSender.SendIntentException;
27import android.content.ServiceConnection;
28import android.content.SharedPreferences;
29import android.content.pm.ActivityInfo;
30import android.content.pm.LabeledIntent;
31import android.content.pm.PackageManager;
32import android.content.pm.PackageManager.NameNotFoundException;
33import android.content.pm.ResolveInfo;
34import android.database.DataSetObserver;
35import android.graphics.Color;
36import android.graphics.drawable.Drawable;
37import android.graphics.drawable.Icon;
38import android.os.Bundle;
39import android.os.Environment;
40import android.os.Handler;
41import android.os.IBinder;
42import android.os.Message;
43import android.os.Parcelable;
44import android.os.Process;
45import android.os.RemoteException;
46import android.os.ResultReceiver;
47import android.os.UserHandle;
48import android.os.UserManager;
49import android.os.storage.StorageManager;
50import android.service.chooser.ChooserTarget;
51import android.service.chooser.ChooserTargetService;
52import android.service.chooser.IChooserTargetResult;
53import android.service.chooser.IChooserTargetService;
54import android.text.TextUtils;
55import android.util.FloatProperty;
56import android.util.Log;
57import android.util.Slog;
58import android.view.LayoutInflater;
59import android.view.View;
60import android.view.View.MeasureSpec;
61import android.view.View.OnClickListener;
62import android.view.View.OnLongClickListener;
63import android.view.ViewGroup;
64import android.view.ViewGroup.LayoutParams;
65import android.view.animation.AnimationUtils;
66import android.view.animation.Interpolator;
67import android.widget.AbsListView;
68import android.widget.BaseAdapter;
69import android.widget.ListView;
70import com.android.internal.R;
71import com.android.internal.app.ResolverActivity.TargetInfo;
72import com.android.internal.logging.MetricsLogger;
73import com.android.internal.logging.MetricsProto.MetricsEvent;
74import com.google.android.collect.Lists;
75
76import java.io.File;
77import java.util.ArrayList;
78import java.util.Collections;
79import java.util.Comparator;
80import java.util.List;
81
82public class ChooserActivity extends ResolverActivity {
83    private static final String TAG = "ChooserActivity";
84
85    private static final boolean DEBUG = false;
86
87    private static final int QUERY_TARGET_SERVICE_LIMIT = 5;
88    private static final int WATCHDOG_TIMEOUT_MILLIS = 5000;
89
90    private Bundle mReplacementExtras;
91    private IntentSender mChosenComponentSender;
92    private IntentSender mRefinementIntentSender;
93    private RefinementResultReceiver mRefinementResultReceiver;
94    private ChooserTarget[] mCallerChooserTargets;
95
96    private Intent mReferrerFillInIntent;
97
98    private ChooserListAdapter mChooserListAdapter;
99    private ChooserRowAdapter mChooserRowAdapter;
100
101    private SharedPreferences mPinnedSharedPrefs;
102    private static final float PINNED_TARGET_SCORE_BOOST = 1000.f;
103    private static final float CALLER_TARGET_SCORE_BOOST = 900.f;
104    private static final String PINNED_SHARED_PREFS_NAME = "chooser_pin_settings";
105    private static final String TARGET_DETAILS_FRAGMENT_TAG = "targetDetailsFragment";
106
107    private final List<ChooserTargetServiceConnection> mServiceConnections = new ArrayList<>();
108
109    private static final int CHOOSER_TARGET_SERVICE_RESULT = 1;
110    private static final int CHOOSER_TARGET_SERVICE_WATCHDOG_TIMEOUT = 2;
111
112    private final Handler mChooserHandler = new Handler() {
113        @Override
114        public void handleMessage(Message msg) {
115            switch (msg.what) {
116                case CHOOSER_TARGET_SERVICE_RESULT:
117                    if (DEBUG) Log.d(TAG, "CHOOSER_TARGET_SERVICE_RESULT");
118                    if (isDestroyed()) break;
119                    final ServiceResultInfo sri = (ServiceResultInfo) msg.obj;
120                    if (!mServiceConnections.contains(sri.connection)) {
121                        Log.w(TAG, "ChooserTargetServiceConnection " + sri.connection
122                                + " returned after being removed from active connections."
123                                + " Have you considered returning results faster?");
124                        break;
125                    }
126                    if (sri.resultTargets != null) {
127                        mChooserListAdapter.addServiceResults(sri.originalTarget,
128                                sri.resultTargets);
129                    }
130                    unbindService(sri.connection);
131                    sri.connection.destroy();
132                    mServiceConnections.remove(sri.connection);
133                    if (mServiceConnections.isEmpty()) {
134                        mChooserHandler.removeMessages(CHOOSER_TARGET_SERVICE_WATCHDOG_TIMEOUT);
135                        sendVoiceChoicesIfNeeded();
136                        mChooserListAdapter.setShowServiceTargets(true);
137                    }
138                    break;
139
140                case CHOOSER_TARGET_SERVICE_WATCHDOG_TIMEOUT:
141                    if (DEBUG) {
142                        Log.d(TAG, "CHOOSER_TARGET_SERVICE_WATCHDOG_TIMEOUT; unbinding services");
143                    }
144                    unbindRemainingServices();
145                    sendVoiceChoicesIfNeeded();
146                    mChooserListAdapter.setShowServiceTargets(true);
147                    break;
148
149                default:
150                    super.handleMessage(msg);
151            }
152        }
153    };
154
155    @Override
156    protected void onCreate(Bundle savedInstanceState) {
157        Intent intent = getIntent();
158        Parcelable targetParcelable = intent.getParcelableExtra(Intent.EXTRA_INTENT);
159        if (!(targetParcelable instanceof Intent)) {
160            Log.w("ChooserActivity", "Target is not an intent: " + targetParcelable);
161            finish();
162            super.onCreate(null);
163            return;
164        }
165        Intent target = (Intent) targetParcelable;
166        if (target != null) {
167            modifyTargetIntent(target);
168        }
169        Parcelable[] targetsParcelable
170                = intent.getParcelableArrayExtra(Intent.EXTRA_ALTERNATE_INTENTS);
171        if (targetsParcelable != null) {
172            final boolean offset = target == null;
173            Intent[] additionalTargets =
174                    new Intent[offset ? targetsParcelable.length - 1 : targetsParcelable.length];
175            for (int i = 0; i < targetsParcelable.length; i++) {
176                if (!(targetsParcelable[i] instanceof Intent)) {
177                    Log.w(TAG, "EXTRA_ALTERNATE_INTENTS array entry #" + i + " is not an Intent: "
178                            + targetsParcelable[i]);
179                    finish();
180                    super.onCreate(null);
181                    return;
182                }
183                final Intent additionalTarget = (Intent) targetsParcelable[i];
184                if (i == 0 && target == null) {
185                    target = additionalTarget;
186                    modifyTargetIntent(target);
187                } else {
188                    additionalTargets[offset ? i - 1 : i] = additionalTarget;
189                    modifyTargetIntent(additionalTarget);
190                }
191            }
192            setAdditionalTargets(additionalTargets);
193        }
194
195        mReplacementExtras = intent.getBundleExtra(Intent.EXTRA_REPLACEMENT_EXTRAS);
196        CharSequence title = intent.getCharSequenceExtra(Intent.EXTRA_TITLE);
197        int defaultTitleRes = 0;
198        if (title == null) {
199            defaultTitleRes = com.android.internal.R.string.chooseActivity;
200        }
201        Parcelable[] pa = intent.getParcelableArrayExtra(Intent.EXTRA_INITIAL_INTENTS);
202        Intent[] initialIntents = null;
203        if (pa != null) {
204            initialIntents = new Intent[pa.length];
205            for (int i=0; i<pa.length; i++) {
206                if (!(pa[i] instanceof Intent)) {
207                    Log.w(TAG, "Initial intent #" + i + " not an Intent: " + pa[i]);
208                    finish();
209                    super.onCreate(null);
210                    return;
211                }
212                final Intent in = (Intent) pa[i];
213                modifyTargetIntent(in);
214                initialIntents[i] = in;
215            }
216        }
217
218        mReferrerFillInIntent = new Intent().putExtra(Intent.EXTRA_REFERRER, getReferrer());
219
220        mChosenComponentSender = intent.getParcelableExtra(
221                Intent.EXTRA_CHOSEN_COMPONENT_INTENT_SENDER);
222        mRefinementIntentSender = intent.getParcelableExtra(
223                Intent.EXTRA_CHOOSER_REFINEMENT_INTENT_SENDER);
224        setSafeForwardingMode(true);
225
226        pa = intent.getParcelableArrayExtra(Intent.EXTRA_EXCLUDE_COMPONENTS);
227        if (pa != null) {
228            ComponentName[] names = new ComponentName[pa.length];
229            for (int i = 0; i < pa.length; i++) {
230                if (!(pa[i] instanceof ComponentName)) {
231                    Log.w(TAG, "Filtered component #" + i + " not a ComponentName: " + pa[i]);
232                    names = null;
233                    break;
234                }
235                names[i] = (ComponentName) pa[i];
236            }
237            setFilteredComponents(names);
238        }
239
240        pa = intent.getParcelableArrayExtra(Intent.EXTRA_CHOOSER_TARGETS);
241        if (pa != null) {
242            ChooserTarget[] targets = new ChooserTarget[pa.length];
243            for (int i = 0; i < pa.length; i++) {
244                if (!(pa[i] instanceof ChooserTarget)) {
245                    Log.w(TAG, "Chooser target #" + i + " not a ChooserTarget: " + pa[i]);
246                    targets = null;
247                    break;
248                }
249                targets[i] = (ChooserTarget) pa[i];
250            }
251            mCallerChooserTargets = targets;
252        }
253
254        mPinnedSharedPrefs = getPinnedSharedPrefs(this);
255        super.onCreate(savedInstanceState, target, title, defaultTitleRes, initialIntents,
256                null, false);
257
258        MetricsLogger.action(this, MetricsEvent.ACTION_ACTIVITY_CHOOSER_SHOWN);
259    }
260
261    static SharedPreferences getPinnedSharedPrefs(Context context) {
262        // The code below is because in the android:ui process, no one can hear you scream.
263        // The package info in the context isn't initialized in the way it is for normal apps,
264        // so the standard, name-based context.getSharedPreferences doesn't work. Instead, we
265        // build the path manually below using the same policy that appears in ContextImpl.
266        // This fails silently under the hood if there's a problem, so if we find ourselves in
267        // the case where we don't have access to credential encrypted storage we just won't
268        // have our pinned target info.
269        final File prefsFile = new File(new File(
270                Environment.getDataUserCePackageDirectory(StorageManager.UUID_PRIVATE_INTERNAL,
271                        context.getUserId(), context.getPackageName()),
272                "shared_prefs"),
273                PINNED_SHARED_PREFS_NAME + ".xml");
274        return context.getSharedPreferences(prefsFile, MODE_PRIVATE);
275    }
276
277    @Override
278    protected void onDestroy() {
279        super.onDestroy();
280        if (mRefinementResultReceiver != null) {
281            mRefinementResultReceiver.destroy();
282            mRefinementResultReceiver = null;
283        }
284        unbindRemainingServices();
285        mChooserHandler.removeMessages(CHOOSER_TARGET_SERVICE_RESULT);
286    }
287
288    @Override
289    public Intent getReplacementIntent(ActivityInfo aInfo, Intent defIntent) {
290        Intent result = defIntent;
291        if (mReplacementExtras != null) {
292            final Bundle replExtras = mReplacementExtras.getBundle(aInfo.packageName);
293            if (replExtras != null) {
294                result = new Intent(defIntent);
295                result.putExtras(replExtras);
296            }
297        }
298        if (aInfo.name.equals(IntentForwarderActivity.FORWARD_INTENT_TO_PARENT)
299                || aInfo.name.equals(IntentForwarderActivity.FORWARD_INTENT_TO_MANAGED_PROFILE)) {
300            result = Intent.createChooser(result,
301                    getIntent().getCharSequenceExtra(Intent.EXTRA_TITLE));
302        }
303        return result;
304    }
305
306    @Override
307    public void onActivityStarted(TargetInfo cti) {
308        if (mChosenComponentSender != null) {
309            final ComponentName target = cti.getResolvedComponentName();
310            if (target != null) {
311                final Intent fillIn = new Intent().putExtra(Intent.EXTRA_CHOSEN_COMPONENT, target);
312                try {
313                    mChosenComponentSender.sendIntent(this, Activity.RESULT_OK, fillIn, null, null);
314                } catch (IntentSender.SendIntentException e) {
315                    Slog.e(TAG, "Unable to launch supplied IntentSender to report "
316                            + "the chosen component: " + e);
317                }
318            }
319        }
320    }
321
322    @Override
323    public void onPrepareAdapterView(AbsListView adapterView, ResolveListAdapter adapter,
324            boolean alwaysUseOption) {
325        final ListView listView = adapterView instanceof ListView ? (ListView) adapterView : null;
326        mChooserListAdapter = (ChooserListAdapter) adapter;
327        if (mCallerChooserTargets != null && mCallerChooserTargets.length > 0) {
328            mChooserListAdapter.addServiceResults(null, Lists.newArrayList(mCallerChooserTargets));
329        }
330        mChooserRowAdapter = new ChooserRowAdapter(mChooserListAdapter);
331        mChooserRowAdapter.registerDataSetObserver(new OffsetDataSetObserver(adapterView));
332        adapterView.setAdapter(mChooserRowAdapter);
333        if (listView != null) {
334            listView.setItemsCanFocus(true);
335        }
336    }
337
338    @Override
339    public int getLayoutResource() {
340        return R.layout.chooser_grid;
341    }
342
343    @Override
344    public boolean shouldGetActivityMetadata() {
345        return true;
346    }
347
348    @Override
349    public boolean shouldAutoLaunchSingleChoice(TargetInfo target) {
350        return getIntent().getBooleanExtra(Intent.EXTRA_AUTO_LAUNCH_SINGLE_CHOICE,
351                super.shouldAutoLaunchSingleChoice(target));
352    }
353
354    @Override
355    public void showTargetDetails(ResolveInfo ri) {
356        ComponentName name = ri.activityInfo.getComponentName();
357        boolean pinned = mPinnedSharedPrefs.getBoolean(name.flattenToString(), false);
358        ResolverTargetActionsDialogFragment f =
359                new ResolverTargetActionsDialogFragment(ri.loadLabel(getPackageManager()),
360                        name, pinned);
361        f.show(getFragmentManager(), TARGET_DETAILS_FRAGMENT_TAG);
362    }
363
364    private void modifyTargetIntent(Intent in) {
365        final String action = in.getAction();
366        if (Intent.ACTION_SEND.equals(action) ||
367                Intent.ACTION_SEND_MULTIPLE.equals(action)) {
368            in.addFlags(Intent.FLAG_ACTIVITY_NEW_DOCUMENT |
369                    Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
370        }
371    }
372
373    @Override
374    protected boolean onTargetSelected(TargetInfo target, boolean alwaysCheck) {
375        if (mRefinementIntentSender != null) {
376            final Intent fillIn = new Intent();
377            final List<Intent> sourceIntents = target.getAllSourceIntents();
378            if (!sourceIntents.isEmpty()) {
379                fillIn.putExtra(Intent.EXTRA_INTENT, sourceIntents.get(0));
380                if (sourceIntents.size() > 1) {
381                    final Intent[] alts = new Intent[sourceIntents.size() - 1];
382                    for (int i = 1, N = sourceIntents.size(); i < N; i++) {
383                        alts[i - 1] = sourceIntents.get(i);
384                    }
385                    fillIn.putExtra(Intent.EXTRA_ALTERNATE_INTENTS, alts);
386                }
387                if (mRefinementResultReceiver != null) {
388                    mRefinementResultReceiver.destroy();
389                }
390                mRefinementResultReceiver = new RefinementResultReceiver(this, target, null);
391                fillIn.putExtra(Intent.EXTRA_RESULT_RECEIVER,
392                        mRefinementResultReceiver);
393                try {
394                    mRefinementIntentSender.sendIntent(this, 0, fillIn, null, null);
395                    return false;
396                } catch (SendIntentException e) {
397                    Log.e(TAG, "Refinement IntentSender failed to send", e);
398                }
399            }
400        }
401        return super.onTargetSelected(target, alwaysCheck);
402    }
403
404    @Override
405    public void startSelected(int which, boolean always, boolean filtered) {
406        super.startSelected(which, always, filtered);
407
408        if (mChooserListAdapter != null) {
409            // Log the index of which type of target the user picked.
410            // Lower values mean the ranking was better.
411            int cat = 0;
412            int value = which;
413            switch (mChooserListAdapter.getPositionTargetType(which)) {
414                case ChooserListAdapter.TARGET_CALLER:
415                    cat = MetricsEvent.ACTION_ACTIVITY_CHOOSER_PICKED_APP_TARGET;
416                    break;
417                case ChooserListAdapter.TARGET_SERVICE:
418                    cat = MetricsEvent.ACTION_ACTIVITY_CHOOSER_PICKED_SERVICE_TARGET;
419                    value -= mChooserListAdapter.getCallerTargetCount();
420                    break;
421                case ChooserListAdapter.TARGET_STANDARD:
422                    cat = MetricsEvent.ACTION_ACTIVITY_CHOOSER_PICKED_STANDARD_TARGET;
423                    value -= mChooserListAdapter.getCallerTargetCount()
424                            + mChooserListAdapter.getServiceTargetCount();
425                    break;
426            }
427
428            if (cat != 0) {
429                MetricsLogger.action(this, cat, value);
430            }
431        }
432    }
433
434    void queryTargetServices(ChooserListAdapter adapter) {
435        final PackageManager pm = getPackageManager();
436        int targetsToQuery = 0;
437        for (int i = 0, N = adapter.getDisplayResolveInfoCount(); i < N; i++) {
438            final DisplayResolveInfo dri = adapter.getDisplayResolveInfo(i);
439            if (adapter.getScore(dri) == 0) {
440                // A score of 0 means the app hasn't been used in some time;
441                // don't query it as it's not likely to be relevant.
442                continue;
443            }
444            final ActivityInfo ai = dri.getResolveInfo().activityInfo;
445            final Bundle md = ai.metaData;
446            final String serviceName = md != null ? convertServiceName(ai.packageName,
447                    md.getString(ChooserTargetService.META_DATA_NAME)) : null;
448            if (serviceName != null) {
449                final ComponentName serviceComponent = new ComponentName(
450                        ai.packageName, serviceName);
451                final Intent serviceIntent = new Intent(ChooserTargetService.SERVICE_INTERFACE)
452                        .setComponent(serviceComponent);
453
454                if (DEBUG) {
455                    Log.d(TAG, "queryTargets found target with service " + serviceComponent);
456                }
457
458                try {
459                    final String perm = pm.getServiceInfo(serviceComponent, 0).permission;
460                    if (!ChooserTargetService.BIND_PERMISSION.equals(perm)) {
461                        Log.w(TAG, "ChooserTargetService " + serviceComponent + " does not require"
462                                + " permission " + ChooserTargetService.BIND_PERMISSION
463                                + " - this service will not be queried for ChooserTargets."
464                                + " add android:permission=\""
465                                + ChooserTargetService.BIND_PERMISSION + "\""
466                                + " to the <service> tag for " + serviceComponent
467                                + " in the manifest.");
468                        continue;
469                    }
470                } catch (NameNotFoundException e) {
471                    Log.e(TAG, "Could not look up service " + serviceComponent
472                            + "; component name not found");
473                    continue;
474                }
475
476                final ChooserTargetServiceConnection conn =
477                        new ChooserTargetServiceConnection(this, dri);
478
479                // Explicitly specify Process.myUserHandle instead of calling bindService
480                // to avoid the warning from calling from the system process without an explicit
481                // user handle
482                if (bindServiceAsUser(serviceIntent, conn, BIND_AUTO_CREATE | BIND_NOT_FOREGROUND,
483                        Process.myUserHandle())) {
484                    if (DEBUG) {
485                        Log.d(TAG, "Binding service connection for target " + dri
486                                + " intent " + serviceIntent);
487                    }
488                    mServiceConnections.add(conn);
489                    targetsToQuery++;
490                }
491            }
492            if (targetsToQuery >= QUERY_TARGET_SERVICE_LIMIT) {
493                if (DEBUG) Log.d(TAG, "queryTargets hit query target limit "
494                        + QUERY_TARGET_SERVICE_LIMIT);
495                break;
496            }
497        }
498
499        if (!mServiceConnections.isEmpty()) {
500            if (DEBUG) Log.d(TAG, "queryTargets setting watchdog timer for "
501                    + WATCHDOG_TIMEOUT_MILLIS + "ms");
502            mChooserHandler.sendEmptyMessageDelayed(CHOOSER_TARGET_SERVICE_WATCHDOG_TIMEOUT,
503                    WATCHDOG_TIMEOUT_MILLIS);
504        } else {
505            sendVoiceChoicesIfNeeded();
506        }
507    }
508
509    private String convertServiceName(String packageName, String serviceName) {
510        if (TextUtils.isEmpty(serviceName)) {
511            return null;
512        }
513
514        final String fullName;
515        if (serviceName.startsWith(".")) {
516            // Relative to the app package. Prepend the app package name.
517            fullName = packageName + serviceName;
518        } else if (serviceName.indexOf('.') >= 0) {
519            // Fully qualified package name.
520            fullName = serviceName;
521        } else {
522            fullName = null;
523        }
524        return fullName;
525    }
526
527    void unbindRemainingServices() {
528        if (DEBUG) {
529            Log.d(TAG, "unbindRemainingServices, " + mServiceConnections.size() + " left");
530        }
531        for (int i = 0, N = mServiceConnections.size(); i < N; i++) {
532            final ChooserTargetServiceConnection conn = mServiceConnections.get(i);
533            if (DEBUG) Log.d(TAG, "unbinding " + conn);
534            unbindService(conn);
535            conn.destroy();
536        }
537        mServiceConnections.clear();
538        mChooserHandler.removeMessages(CHOOSER_TARGET_SERVICE_WATCHDOG_TIMEOUT);
539    }
540
541    public void onSetupVoiceInteraction() {
542        // Do nothing. We'll send the voice stuff ourselves.
543    }
544
545    void onRefinementResult(TargetInfo selectedTarget, Intent matchingIntent) {
546        if (mRefinementResultReceiver != null) {
547            mRefinementResultReceiver.destroy();
548            mRefinementResultReceiver = null;
549        }
550
551        if (selectedTarget == null) {
552            Log.e(TAG, "Refinement result intent did not match any known targets; canceling");
553        } else if (!checkTargetSourceIntent(selectedTarget, matchingIntent)) {
554            Log.e(TAG, "onRefinementResult: Selected target " + selectedTarget
555                    + " cannot match refined source intent " + matchingIntent);
556        } else if (super.onTargetSelected(selectedTarget.cloneFilledIn(matchingIntent, 0), false)) {
557            finish();
558            return;
559        }
560        onRefinementCanceled();
561    }
562
563    void onRefinementCanceled() {
564        if (mRefinementResultReceiver != null) {
565            mRefinementResultReceiver.destroy();
566            mRefinementResultReceiver = null;
567        }
568        finish();
569    }
570
571    boolean checkTargetSourceIntent(TargetInfo target, Intent matchingIntent) {
572        final List<Intent> targetIntents = target.getAllSourceIntents();
573        for (int i = 0, N = targetIntents.size(); i < N; i++) {
574            final Intent targetIntent = targetIntents.get(i);
575            if (targetIntent.filterEquals(matchingIntent)) {
576                return true;
577            }
578        }
579        return false;
580    }
581
582    void filterServiceTargets(String packageName, List<ChooserTarget> targets) {
583        if (targets == null) {
584            return;
585        }
586
587        final PackageManager pm = getPackageManager();
588        for (int i = targets.size() - 1; i >= 0; i--) {
589            final ChooserTarget target = targets.get(i);
590            final ComponentName targetName = target.getComponentName();
591            if (packageName != null && packageName.equals(targetName.getPackageName())) {
592                // Anything from the original target's package is fine.
593                continue;
594            }
595
596            boolean remove;
597            try {
598                final ActivityInfo ai = pm.getActivityInfo(targetName, 0);
599                remove = !ai.exported || ai.permission != null;
600            } catch (NameNotFoundException e) {
601                Log.e(TAG, "Target " + target + " returned by " + packageName
602                        + " component not found");
603                remove = true;
604            }
605
606            if (remove) {
607                targets.remove(i);
608            }
609        }
610    }
611
612    @Override
613    public ResolveListAdapter createAdapter(Context context, List<Intent> payloadIntents,
614            Intent[] initialIntents, List<ResolveInfo> rList, int launchedFromUid,
615            boolean filterLastUsed) {
616        final ChooserListAdapter adapter = new ChooserListAdapter(context, payloadIntents,
617                initialIntents, rList, launchedFromUid, filterLastUsed);
618        if (DEBUG) Log.d(TAG, "Adapter created; querying services");
619        queryTargetServices(adapter);
620        return adapter;
621    }
622
623    final class ChooserTargetInfo implements TargetInfo {
624        private final DisplayResolveInfo mSourceInfo;
625        private final ResolveInfo mBackupResolveInfo;
626        private final ChooserTarget mChooserTarget;
627        private Drawable mBadgeIcon = null;
628        private CharSequence mBadgeContentDescription;
629        private Drawable mDisplayIcon;
630        private final Intent mFillInIntent;
631        private final int mFillInFlags;
632        private final float mModifiedScore;
633
634        public ChooserTargetInfo(DisplayResolveInfo sourceInfo, ChooserTarget chooserTarget,
635                float modifiedScore) {
636            mSourceInfo = sourceInfo;
637            mChooserTarget = chooserTarget;
638            mModifiedScore = modifiedScore;
639            if (sourceInfo != null) {
640                final ResolveInfo ri = sourceInfo.getResolveInfo();
641                if (ri != null) {
642                    final ActivityInfo ai = ri.activityInfo;
643                    if (ai != null && ai.applicationInfo != null) {
644                        final PackageManager pm = getPackageManager();
645                        mBadgeIcon = pm.getApplicationIcon(ai.applicationInfo);
646                        mBadgeContentDescription = pm.getApplicationLabel(ai.applicationInfo);
647                    }
648                }
649            }
650            final Icon icon = chooserTarget.getIcon();
651            // TODO do this in the background
652            mDisplayIcon = icon != null ? icon.loadDrawable(ChooserActivity.this) : null;
653
654            if (sourceInfo != null) {
655                mBackupResolveInfo = null;
656            } else {
657                mBackupResolveInfo = getPackageManager().resolveActivity(getResolvedIntent(), 0);
658            }
659
660            mFillInIntent = null;
661            mFillInFlags = 0;
662        }
663
664        private ChooserTargetInfo(ChooserTargetInfo other, Intent fillInIntent, int flags) {
665            mSourceInfo = other.mSourceInfo;
666            mBackupResolveInfo = other.mBackupResolveInfo;
667            mChooserTarget = other.mChooserTarget;
668            mBadgeIcon = other.mBadgeIcon;
669            mBadgeContentDescription = other.mBadgeContentDescription;
670            mDisplayIcon = other.mDisplayIcon;
671            mFillInIntent = fillInIntent;
672            mFillInFlags = flags;
673            mModifiedScore = other.mModifiedScore;
674        }
675
676        public float getModifiedScore() {
677            return mModifiedScore;
678        }
679
680        @Override
681        public Intent getResolvedIntent() {
682            if (mSourceInfo != null) {
683                return mSourceInfo.getResolvedIntent();
684            }
685
686            final Intent targetIntent = new Intent(getTargetIntent());
687            targetIntent.setComponent(mChooserTarget.getComponentName());
688            targetIntent.putExtras(mChooserTarget.getIntentExtras());
689            return targetIntent;
690        }
691
692        @Override
693        public ComponentName getResolvedComponentName() {
694            if (mSourceInfo != null) {
695                return mSourceInfo.getResolvedComponentName();
696            } else if (mBackupResolveInfo != null) {
697                return new ComponentName(mBackupResolveInfo.activityInfo.packageName,
698                        mBackupResolveInfo.activityInfo.name);
699            }
700            return null;
701        }
702
703        private Intent getBaseIntentToSend() {
704            Intent result = getResolvedIntent();
705            if (result == null) {
706                Log.e(TAG, "ChooserTargetInfo: no base intent available to send");
707            } else {
708                result = new Intent(result);
709                if (mFillInIntent != null) {
710                    result.fillIn(mFillInIntent, mFillInFlags);
711                }
712                result.fillIn(mReferrerFillInIntent, 0);
713            }
714            return result;
715        }
716
717        @Override
718        public boolean start(Activity activity, Bundle options) {
719            throw new RuntimeException("ChooserTargets should be started as caller.");
720        }
721
722        @Override
723        public boolean startAsCaller(Activity activity, Bundle options, int userId) {
724            final Intent intent = getBaseIntentToSend();
725            if (intent == null) {
726                return false;
727            }
728            intent.setComponent(mChooserTarget.getComponentName());
729            intent.putExtras(mChooserTarget.getIntentExtras());
730
731            // Important: we will ignore the target security checks in ActivityManager
732            // if and only if the ChooserTarget's target package is the same package
733            // where we got the ChooserTargetService that provided it. This lets a
734            // ChooserTargetService provide a non-exported or permission-guarded target
735            // to the chooser for the user to pick.
736            //
737            // If mSourceInfo is null, we got this ChooserTarget from the caller or elsewhere
738            // so we'll obey the caller's normal security checks.
739            final boolean ignoreTargetSecurity = mSourceInfo != null
740                    && mSourceInfo.getResolvedComponentName().getPackageName()
741                    .equals(mChooserTarget.getComponentName().getPackageName());
742            activity.startActivityAsCaller(intent, options, ignoreTargetSecurity, userId);
743            return true;
744        }
745
746        @Override
747        public boolean startAsUser(Activity activity, Bundle options, UserHandle user) {
748            throw new RuntimeException("ChooserTargets should be started as caller.");
749        }
750
751        @Override
752        public ResolveInfo getResolveInfo() {
753            return mSourceInfo != null ? mSourceInfo.getResolveInfo() : mBackupResolveInfo;
754        }
755
756        @Override
757        public CharSequence getDisplayLabel() {
758            return mChooserTarget.getTitle();
759        }
760
761        @Override
762        public CharSequence getExtendedInfo() {
763            // ChooserTargets have badge icons, so we won't show the extended info to disambiguate.
764            return null;
765        }
766
767        @Override
768        public Drawable getDisplayIcon() {
769            return mDisplayIcon;
770        }
771
772        @Override
773        public Drawable getBadgeIcon() {
774            return mBadgeIcon;
775        }
776
777        @Override
778        public CharSequence getBadgeContentDescription() {
779            return mBadgeContentDescription;
780        }
781
782        @Override
783        public TargetInfo cloneFilledIn(Intent fillInIntent, int flags) {
784            return new ChooserTargetInfo(this, fillInIntent, flags);
785        }
786
787        @Override
788        public List<Intent> getAllSourceIntents() {
789            final List<Intent> results = new ArrayList<>();
790            if (mSourceInfo != null) {
791                // We only queried the service for the first one in our sourceinfo.
792                results.add(mSourceInfo.getAllSourceIntents().get(0));
793            }
794            return results;
795        }
796
797        @Override
798        public boolean isPinned() {
799            return mSourceInfo != null ? mSourceInfo.isPinned() : false;
800        }
801    }
802
803    public class ChooserListAdapter extends ResolveListAdapter {
804        public static final int TARGET_BAD = -1;
805        public static final int TARGET_CALLER = 0;
806        public static final int TARGET_SERVICE = 1;
807        public static final int TARGET_STANDARD = 2;
808
809        private static final int MAX_SERVICE_TARGETS = 8;
810        private static final int MAX_TARGETS_PER_SERVICE = 4;
811
812        private final List<ChooserTargetInfo> mServiceTargets = new ArrayList<>();
813        private final List<TargetInfo> mCallerTargets = new ArrayList<>();
814        private boolean mShowServiceTargets;
815
816        private float mLateFee = 1.f;
817
818        private final BaseChooserTargetComparator mBaseTargetComparator
819                = new BaseChooserTargetComparator();
820
821        public ChooserListAdapter(Context context, List<Intent> payloadIntents,
822                Intent[] initialIntents, List<ResolveInfo> rList, int launchedFromUid,
823                boolean filterLastUsed) {
824            // Don't send the initial intents through the shared ResolverActivity path,
825            // we want to separate them into a different section.
826            super(context, payloadIntents, null, rList, launchedFromUid, filterLastUsed);
827
828            if (initialIntents != null) {
829                final PackageManager pm = getPackageManager();
830                for (int i = 0; i < initialIntents.length; i++) {
831                    final Intent ii = initialIntents[i];
832                    if (ii == null) {
833                        continue;
834                    }
835
836                    // We reimplement Intent#resolveActivityInfo here because if we have an
837                    // implicit intent, we want the ResolveInfo returned by PackageManager
838                    // instead of one we reconstruct ourselves. The ResolveInfo returned might
839                    // have extra metadata and resolvePackageName set and we want to respect that.
840                    ResolveInfo ri = null;
841                    ActivityInfo ai = null;
842                    final ComponentName cn = ii.getComponent();
843                    if (cn != null) {
844                        try {
845                            ai = pm.getActivityInfo(ii.getComponent(), 0);
846                            ri = new ResolveInfo();
847                            ri.activityInfo = ai;
848                        } catch (PackageManager.NameNotFoundException ignored) {
849                            // ai will == null below
850                        }
851                    }
852                    if (ai == null) {
853                        ri = pm.resolveActivity(ii, PackageManager.MATCH_DEFAULT_ONLY);
854                        ai = ri != null ? ri.activityInfo : null;
855                    }
856                    if (ai == null) {
857                        Log.w(TAG, "No activity found for " + ii);
858                        continue;
859                    }
860                    UserManager userManager =
861                            (UserManager) getSystemService(Context.USER_SERVICE);
862                    if (ii instanceof LabeledIntent) {
863                        LabeledIntent li = (LabeledIntent)ii;
864                        ri.resolvePackageName = li.getSourcePackage();
865                        ri.labelRes = li.getLabelResource();
866                        ri.nonLocalizedLabel = li.getNonLocalizedLabel();
867                        ri.icon = li.getIconResource();
868                        ri.iconResourceId = ri.icon;
869                    }
870                    if (userManager.isManagedProfile()) {
871                        ri.noResourceId = true;
872                        ri.icon = 0;
873                    }
874                    mCallerTargets.add(new DisplayResolveInfo(ii, ri,
875                            ri.loadLabel(pm), null, ii));
876                }
877            }
878        }
879
880        @Override
881        public boolean showsExtendedInfo(TargetInfo info) {
882            // We have badges so we don't need this text shown.
883            return false;
884        }
885
886        @Override
887        public boolean isComponentPinned(ComponentName name) {
888            return mPinnedSharedPrefs.getBoolean(name.flattenToString(), false);
889        }
890
891        @Override
892        public float getScore(DisplayResolveInfo target) {
893            if (target == null) {
894                return CALLER_TARGET_SCORE_BOOST;
895            }
896            float score = super.getScore(target);
897            if (target.isPinned()) {
898                score += PINNED_TARGET_SCORE_BOOST;
899            }
900            return score;
901        }
902
903        @Override
904        public View onCreateView(ViewGroup parent) {
905            return mInflater.inflate(
906                    com.android.internal.R.layout.resolve_grid_item, parent, false);
907        }
908
909        @Override
910        public void onListRebuilt() {
911            if (mServiceTargets != null) {
912                pruneServiceTargets();
913            }
914        }
915
916        @Override
917        public boolean shouldGetResolvedFilter() {
918            return true;
919        }
920
921        @Override
922        public int getCount() {
923            return super.getCount() + getServiceTargetCount() + getCallerTargetCount();
924        }
925
926        @Override
927        public int getUnfilteredCount() {
928            return super.getUnfilteredCount() + getServiceTargetCount() + getCallerTargetCount();
929        }
930
931        public int getCallerTargetCount() {
932            return mCallerTargets.size();
933        }
934
935        public int getServiceTargetCount() {
936            if (!mShowServiceTargets) {
937                return 0;
938            }
939            return Math.min(mServiceTargets.size(), MAX_SERVICE_TARGETS);
940        }
941
942        public int getStandardTargetCount() {
943            return super.getCount();
944        }
945
946        public int getPositionTargetType(int position) {
947            int offset = 0;
948
949            final int callerTargetCount = getCallerTargetCount();
950            if (position < callerTargetCount) {
951                return TARGET_CALLER;
952            }
953            offset += callerTargetCount;
954
955            final int serviceTargetCount = getServiceTargetCount();
956            if (position - offset < serviceTargetCount) {
957                return TARGET_SERVICE;
958            }
959            offset += serviceTargetCount;
960
961            final int standardTargetCount = super.getCount();
962            if (position - offset < standardTargetCount) {
963                return TARGET_STANDARD;
964            }
965
966            return TARGET_BAD;
967        }
968
969        @Override
970        public TargetInfo getItem(int position) {
971            return targetInfoForPosition(position, true);
972        }
973
974        @Override
975        public TargetInfo targetInfoForPosition(int position, boolean filtered) {
976            int offset = 0;
977
978            final int callerTargetCount = getCallerTargetCount();
979            if (position < callerTargetCount) {
980                return mCallerTargets.get(position);
981            }
982            offset += callerTargetCount;
983
984            final int serviceTargetCount = getServiceTargetCount();
985            if (position - offset < serviceTargetCount) {
986                return mServiceTargets.get(position - offset);
987            }
988            offset += serviceTargetCount;
989
990            return filtered ? super.getItem(position - offset)
991                    : getDisplayInfoAt(position - offset);
992        }
993
994        public void addServiceResults(DisplayResolveInfo origTarget, List<ChooserTarget> targets) {
995            if (DEBUG) Log.d(TAG, "addServiceResults " + origTarget + ", " + targets.size()
996                    + " targets");
997            final float parentScore = getScore(origTarget);
998            Collections.sort(targets, mBaseTargetComparator);
999            float lastScore = 0;
1000            for (int i = 0, N = Math.min(targets.size(), MAX_TARGETS_PER_SERVICE); i < N; i++) {
1001                final ChooserTarget target = targets.get(i);
1002                float targetScore = target.getScore();
1003                targetScore *= parentScore;
1004                targetScore *= mLateFee;
1005                if (i > 0 && targetScore >= lastScore) {
1006                    // Apply a decay so that the top app can't crowd out everything else.
1007                    // This incents ChooserTargetServices to define what's truly better.
1008                    targetScore = lastScore * 0.95f;
1009                }
1010                insertServiceTarget(new ChooserTargetInfo(origTarget, target, targetScore));
1011
1012                if (DEBUG) {
1013                    Log.d(TAG, " => " + target.toString() + " score=" + targetScore
1014                            + " base=" + target.getScore()
1015                            + " lastScore=" + lastScore
1016                            + " parentScore=" + parentScore
1017                            + " lateFee=" + mLateFee);
1018                }
1019
1020                lastScore = targetScore;
1021            }
1022
1023            mLateFee *= 0.95f;
1024
1025            notifyDataSetChanged();
1026        }
1027
1028        /**
1029         * Set to true to reveal all service targets at once.
1030         */
1031        public void setShowServiceTargets(boolean show) {
1032            mShowServiceTargets = show;
1033            notifyDataSetChanged();
1034        }
1035
1036        private void insertServiceTarget(ChooserTargetInfo chooserTargetInfo) {
1037            final float newScore = chooserTargetInfo.getModifiedScore();
1038            for (int i = 0, N = mServiceTargets.size(); i < N; i++) {
1039                final ChooserTargetInfo serviceTarget = mServiceTargets.get(i);
1040                if (newScore > serviceTarget.getModifiedScore()) {
1041                    mServiceTargets.add(i, chooserTargetInfo);
1042                    return;
1043                }
1044            }
1045            mServiceTargets.add(chooserTargetInfo);
1046        }
1047
1048        private void pruneServiceTargets() {
1049            if (DEBUG) Log.d(TAG, "pruneServiceTargets");
1050            for (int i = mServiceTargets.size() - 1; i >= 0; i--) {
1051                final ChooserTargetInfo cti = mServiceTargets.get(i);
1052                if (!hasResolvedTarget(cti.getResolveInfo())) {
1053                    if (DEBUG) Log.d(TAG, " => " + i + " " + cti);
1054                    mServiceTargets.remove(i);
1055                }
1056            }
1057        }
1058    }
1059
1060    static class BaseChooserTargetComparator implements Comparator<ChooserTarget> {
1061        @Override
1062        public int compare(ChooserTarget lhs, ChooserTarget rhs) {
1063            // Descending order
1064            return (int) Math.signum(rhs.getScore() - lhs.getScore());
1065        }
1066    }
1067
1068    static class RowScale {
1069        private static final int DURATION = 400;
1070
1071        float mScale;
1072        ChooserRowAdapter mAdapter;
1073        private final ObjectAnimator mAnimator;
1074
1075        public static final FloatProperty<RowScale> PROPERTY =
1076                new FloatProperty<RowScale>("scale") {
1077            @Override
1078            public void setValue(RowScale object, float value) {
1079                object.mScale = value;
1080                object.mAdapter.notifyDataSetChanged();
1081            }
1082
1083            @Override
1084            public Float get(RowScale object) {
1085                return object.mScale;
1086            }
1087        };
1088
1089        public RowScale(@NonNull ChooserRowAdapter adapter, float from, float to) {
1090            mAdapter = adapter;
1091            mScale = from;
1092            if (from == to) {
1093                mAnimator = null;
1094                return;
1095            }
1096
1097            mAnimator = ObjectAnimator.ofFloat(this, PROPERTY, from, to).setDuration(DURATION);
1098        }
1099
1100        public RowScale setInterpolator(Interpolator interpolator) {
1101            if (mAnimator != null) {
1102                mAnimator.setInterpolator(interpolator);
1103            }
1104            return this;
1105        }
1106
1107        public float get() {
1108            return mScale;
1109        }
1110
1111        public void startAnimation() {
1112            if (mAnimator != null) {
1113                mAnimator.start();
1114            }
1115        }
1116
1117        public void cancelAnimation() {
1118            if (mAnimator != null) {
1119                mAnimator.cancel();
1120            }
1121        }
1122    }
1123
1124    class ChooserRowAdapter extends BaseAdapter {
1125        private ChooserListAdapter mChooserListAdapter;
1126        private final LayoutInflater mLayoutInflater;
1127        private final int mColumnCount = 4;
1128        private RowScale[] mServiceTargetScale;
1129        private final Interpolator mInterpolator;
1130
1131        public ChooserRowAdapter(ChooserListAdapter wrappedAdapter) {
1132            mChooserListAdapter = wrappedAdapter;
1133            mLayoutInflater = LayoutInflater.from(ChooserActivity.this);
1134
1135            mInterpolator = AnimationUtils.loadInterpolator(ChooserActivity.this,
1136                    android.R.interpolator.decelerate_quint);
1137
1138            wrappedAdapter.registerDataSetObserver(new DataSetObserver() {
1139                @Override
1140                public void onChanged() {
1141                    super.onChanged();
1142                    final int rcount = getServiceTargetRowCount();
1143                    if (mServiceTargetScale == null
1144                            || mServiceTargetScale.length != rcount) {
1145                        RowScale[] old = mServiceTargetScale;
1146                        int oldRCount = old != null ? old.length : 0;
1147                        mServiceTargetScale = new RowScale[rcount];
1148                        if (old != null && rcount > 0) {
1149                            System.arraycopy(old, 0, mServiceTargetScale, 0,
1150                                    Math.min(old.length, rcount));
1151                        }
1152
1153                        for (int i = rcount; i < oldRCount; i++) {
1154                            old[i].cancelAnimation();
1155                        }
1156
1157                        for (int i = oldRCount; i < rcount; i++) {
1158                            final RowScale rs = new RowScale(ChooserRowAdapter.this, 0.f, 1.f)
1159                                    .setInterpolator(mInterpolator);
1160                            mServiceTargetScale[i] = rs;
1161                        }
1162
1163                        // Start the animations in a separate loop.
1164                        // The process of starting animations will result in
1165                        // binding views to set up initial values, and we must
1166                        // have ALL of the new RowScale objects created above before
1167                        // we get started.
1168                        for (int i = oldRCount; i < rcount; i++) {
1169                            mServiceTargetScale[i].startAnimation();
1170                        }
1171                    }
1172
1173                    notifyDataSetChanged();
1174                }
1175
1176                @Override
1177                public void onInvalidated() {
1178                    super.onInvalidated();
1179                    notifyDataSetInvalidated();
1180                    if (mServiceTargetScale != null) {
1181                        for (RowScale rs : mServiceTargetScale) {
1182                            rs.cancelAnimation();
1183                        }
1184                    }
1185                }
1186            });
1187        }
1188
1189        private float getRowScale(int rowPosition) {
1190            final int start = getCallerTargetRowCount();
1191            final int end = start + getServiceTargetRowCount();
1192            if (rowPosition >= start && rowPosition < end) {
1193                return mServiceTargetScale[rowPosition - start].get();
1194            }
1195            return 1.f;
1196        }
1197
1198        @Override
1199        public int getCount() {
1200            return (int) (
1201                    getCallerTargetRowCount()
1202                    + getServiceTargetRowCount()
1203                    + Math.ceil((float) mChooserListAdapter.getStandardTargetCount() / mColumnCount)
1204            );
1205        }
1206
1207        public int getCallerTargetRowCount() {
1208            return (int) Math.ceil(
1209                    (float) mChooserListAdapter.getCallerTargetCount() / mColumnCount);
1210        }
1211
1212        public int getServiceTargetRowCount() {
1213            return (int) Math.ceil(
1214                    (float) mChooserListAdapter.getServiceTargetCount() / mColumnCount);
1215        }
1216
1217        @Override
1218        public Object getItem(int position) {
1219            // We have nothing useful to return here.
1220            return position;
1221        }
1222
1223        @Override
1224        public long getItemId(int position) {
1225            return position;
1226        }
1227
1228        @Override
1229        public View getView(int position, View convertView, ViewGroup parent) {
1230            final RowViewHolder holder;
1231            if (convertView == null) {
1232                holder = createViewHolder(parent);
1233            } else {
1234                holder = (RowViewHolder) convertView.getTag();
1235            }
1236            bindViewHolder(position, holder);
1237
1238            return holder.row;
1239        }
1240
1241        RowViewHolder createViewHolder(ViewGroup parent) {
1242            final ViewGroup row = (ViewGroup) mLayoutInflater.inflate(R.layout.chooser_row,
1243                    parent, false);
1244            final RowViewHolder holder = new RowViewHolder(row, mColumnCount);
1245            final int spec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
1246
1247            for (int i = 0; i < mColumnCount; i++) {
1248                final View v = mChooserListAdapter.createView(row);
1249                final int column = i;
1250                v.setOnClickListener(new OnClickListener() {
1251                    @Override
1252                    public void onClick(View v) {
1253                        startSelected(holder.itemIndices[column], false, true);
1254                    }
1255                });
1256                v.setOnLongClickListener(new OnLongClickListener() {
1257                    @Override
1258                    public boolean onLongClick(View v) {
1259                        showTargetDetails(
1260                                mChooserListAdapter.resolveInfoForPosition(
1261                                        holder.itemIndices[column], true));
1262                        return true;
1263                    }
1264                });
1265                row.addView(v);
1266                holder.cells[i] = v;
1267
1268                // Force height to be a given so we don't have visual disruption during scaling.
1269                LayoutParams lp = v.getLayoutParams();
1270                v.measure(spec, spec);
1271                if (lp == null) {
1272                    lp = new LayoutParams(LayoutParams.MATCH_PARENT, v.getMeasuredHeight());
1273                    row.setLayoutParams(lp);
1274                } else {
1275                    lp.height = v.getMeasuredHeight();
1276                }
1277            }
1278
1279            // Pre-measure so we can scale later.
1280            holder.measure();
1281            LayoutParams lp = row.getLayoutParams();
1282            if (lp == null) {
1283                lp = new LayoutParams(LayoutParams.MATCH_PARENT, holder.measuredRowHeight);
1284                row.setLayoutParams(lp);
1285            } else {
1286                lp.height = holder.measuredRowHeight;
1287            }
1288            row.setTag(holder);
1289            return holder;
1290        }
1291
1292        void bindViewHolder(int rowPosition, RowViewHolder holder) {
1293            final int start = getFirstRowPosition(rowPosition);
1294            final int startType = mChooserListAdapter.getPositionTargetType(start);
1295
1296            int end = start + mColumnCount - 1;
1297            while (mChooserListAdapter.getPositionTargetType(end) != startType && end >= start) {
1298                end--;
1299            }
1300
1301            if (startType == ChooserListAdapter.TARGET_SERVICE) {
1302                holder.row.setBackgroundColor(
1303                        getColor(R.color.chooser_service_row_background_color));
1304            } else {
1305                holder.row.setBackgroundColor(Color.TRANSPARENT);
1306            }
1307
1308            final int oldHeight = holder.row.getLayoutParams().height;
1309            holder.row.getLayoutParams().height = Math.max(1,
1310                    (int) (holder.measuredRowHeight * getRowScale(rowPosition)));
1311            if (holder.row.getLayoutParams().height != oldHeight) {
1312                holder.row.requestLayout();
1313            }
1314
1315            for (int i = 0; i < mColumnCount; i++) {
1316                final View v = holder.cells[i];
1317                if (start + i <= end) {
1318                    v.setVisibility(View.VISIBLE);
1319                    holder.itemIndices[i] = start + i;
1320                    mChooserListAdapter.bindView(holder.itemIndices[i], v);
1321                } else {
1322                    v.setVisibility(View.GONE);
1323                }
1324            }
1325        }
1326
1327        int getFirstRowPosition(int row) {
1328            final int callerCount = mChooserListAdapter.getCallerTargetCount();
1329            final int callerRows = (int) Math.ceil((float) callerCount / mColumnCount);
1330
1331            if (row < callerRows) {
1332                return row * mColumnCount;
1333            }
1334
1335            final int serviceCount = mChooserListAdapter.getServiceTargetCount();
1336            final int serviceRows = (int) Math.ceil((float) serviceCount / mColumnCount);
1337
1338            if (row < callerRows + serviceRows) {
1339                return callerCount + (row - callerRows) * mColumnCount;
1340            }
1341
1342            return callerCount + serviceCount
1343                    + (row - callerRows - serviceRows) * mColumnCount;
1344        }
1345    }
1346
1347    static class RowViewHolder {
1348        final View[] cells;
1349        final ViewGroup row;
1350        int measuredRowHeight;
1351        int[] itemIndices;
1352
1353        public RowViewHolder(ViewGroup row, int cellCount) {
1354            this.row = row;
1355            this.cells = new View[cellCount];
1356            this.itemIndices = new int[cellCount];
1357        }
1358
1359        public void measure() {
1360            final int spec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
1361            row.measure(spec, spec);
1362            measuredRowHeight = row.getMeasuredHeight();
1363        }
1364    }
1365
1366    static class ChooserTargetServiceConnection implements ServiceConnection {
1367        private DisplayResolveInfo mOriginalTarget;
1368        private ComponentName mConnectedComponent;
1369        private ChooserActivity mChooserActivity;
1370        private final Object mLock = new Object();
1371
1372        private final IChooserTargetResult mChooserTargetResult = new IChooserTargetResult.Stub() {
1373            @Override
1374            public void sendResult(List<ChooserTarget> targets) throws RemoteException {
1375                synchronized (mLock) {
1376                    if (mChooserActivity == null) {
1377                        Log.e(TAG, "destroyed ChooserTargetServiceConnection received result from "
1378                                + mConnectedComponent + "; ignoring...");
1379                        return;
1380                    }
1381                    mChooserActivity.filterServiceTargets(
1382                            mOriginalTarget.getResolveInfo().activityInfo.packageName, targets);
1383                    final Message msg = Message.obtain();
1384                    msg.what = CHOOSER_TARGET_SERVICE_RESULT;
1385                    msg.obj = new ServiceResultInfo(mOriginalTarget, targets,
1386                            ChooserTargetServiceConnection.this);
1387                    mChooserActivity.mChooserHandler.sendMessage(msg);
1388                }
1389            }
1390        };
1391
1392        public ChooserTargetServiceConnection(ChooserActivity chooserActivity,
1393                DisplayResolveInfo dri) {
1394            mChooserActivity = chooserActivity;
1395            mOriginalTarget = dri;
1396        }
1397
1398        @Override
1399        public void onServiceConnected(ComponentName name, IBinder service) {
1400            if (DEBUG) Log.d(TAG, "onServiceConnected: " + name);
1401            synchronized (mLock) {
1402                if (mChooserActivity == null) {
1403                    Log.e(TAG, "destroyed ChooserTargetServiceConnection got onServiceConnected");
1404                    return;
1405                }
1406
1407                final IChooserTargetService icts = IChooserTargetService.Stub.asInterface(service);
1408                try {
1409                    icts.getChooserTargets(mOriginalTarget.getResolvedComponentName(),
1410                            mOriginalTarget.getResolveInfo().filter, mChooserTargetResult);
1411                } catch (RemoteException e) {
1412                    Log.e(TAG, "Querying ChooserTargetService " + name + " failed.", e);
1413                    mChooserActivity.unbindService(this);
1414                    destroy();
1415                    mChooserActivity.mServiceConnections.remove(this);
1416                }
1417            }
1418        }
1419
1420        @Override
1421        public void onServiceDisconnected(ComponentName name) {
1422            if (DEBUG) Log.d(TAG, "onServiceDisconnected: " + name);
1423            synchronized (mLock) {
1424                if (mChooserActivity == null) {
1425                    Log.e(TAG,
1426                            "destroyed ChooserTargetServiceConnection got onServiceDisconnected");
1427                    return;
1428                }
1429
1430                mChooserActivity.unbindService(this);
1431                destroy();
1432                mChooserActivity.mServiceConnections.remove(this);
1433                if (mChooserActivity.mServiceConnections.isEmpty()) {
1434                    mChooserActivity.mChooserHandler.removeMessages(
1435                            CHOOSER_TARGET_SERVICE_WATCHDOG_TIMEOUT);
1436                    mChooserActivity.sendVoiceChoicesIfNeeded();
1437                }
1438                mConnectedComponent = null;
1439            }
1440        }
1441
1442        public void destroy() {
1443            synchronized (mLock) {
1444                mChooserActivity = null;
1445                mOriginalTarget = null;
1446            }
1447        }
1448
1449        @Override
1450        public String toString() {
1451            return "ChooserTargetServiceConnection{service="
1452                    + mConnectedComponent + ", activity="
1453                    + (mOriginalTarget != null
1454                    ? mOriginalTarget.getResolveInfo().activityInfo.toString()
1455                    : "<connection destroyed>") + "}";
1456        }
1457    }
1458
1459    static class ServiceResultInfo {
1460        public final DisplayResolveInfo originalTarget;
1461        public final List<ChooserTarget> resultTargets;
1462        public final ChooserTargetServiceConnection connection;
1463
1464        public ServiceResultInfo(DisplayResolveInfo ot, List<ChooserTarget> rt,
1465                ChooserTargetServiceConnection c) {
1466            originalTarget = ot;
1467            resultTargets = rt;
1468            connection = c;
1469        }
1470    }
1471
1472    static class RefinementResultReceiver extends ResultReceiver {
1473        private ChooserActivity mChooserActivity;
1474        private TargetInfo mSelectedTarget;
1475
1476        public RefinementResultReceiver(ChooserActivity host, TargetInfo target,
1477                Handler handler) {
1478            super(handler);
1479            mChooserActivity = host;
1480            mSelectedTarget = target;
1481        }
1482
1483        @Override
1484        protected void onReceiveResult(int resultCode, Bundle resultData) {
1485            if (mChooserActivity == null) {
1486                Log.e(TAG, "Destroyed RefinementResultReceiver received a result");
1487                return;
1488            }
1489            if (resultData == null) {
1490                Log.e(TAG, "RefinementResultReceiver received null resultData");
1491                return;
1492            }
1493
1494            switch (resultCode) {
1495                case RESULT_CANCELED:
1496                    mChooserActivity.onRefinementCanceled();
1497                    break;
1498                case RESULT_OK:
1499                    Parcelable intentParcelable = resultData.getParcelable(Intent.EXTRA_INTENT);
1500                    if (intentParcelable instanceof Intent) {
1501                        mChooserActivity.onRefinementResult(mSelectedTarget,
1502                                (Intent) intentParcelable);
1503                    } else {
1504                        Log.e(TAG, "RefinementResultReceiver received RESULT_OK but no Intent"
1505                                + " in resultData with key Intent.EXTRA_INTENT");
1506                    }
1507                    break;
1508                default:
1509                    Log.w(TAG, "Unknown result code " + resultCode
1510                            + " sent to RefinementResultReceiver");
1511                    break;
1512            }
1513        }
1514
1515        public void destroy() {
1516            mChooserActivity = null;
1517            mSelectedTarget = null;
1518        }
1519    }
1520
1521    class OffsetDataSetObserver extends DataSetObserver {
1522        private final AbsListView mListView;
1523        private int mCachedViewType = -1;
1524        private View mCachedView;
1525
1526        public OffsetDataSetObserver(AbsListView listView) {
1527            mListView = listView;
1528        }
1529
1530        @Override
1531        public void onChanged() {
1532            if (mResolverDrawerLayout == null) {
1533                return;
1534            }
1535
1536            final int chooserTargetRows = mChooserRowAdapter.getServiceTargetRowCount();
1537            int offset = 0;
1538            for (int i = 0; i < chooserTargetRows; i++)  {
1539                final int pos = mChooserRowAdapter.getCallerTargetRowCount() + i;
1540                final int vt = mChooserRowAdapter.getItemViewType(pos);
1541                if (vt != mCachedViewType) {
1542                    mCachedView = null;
1543                }
1544                final View v = mChooserRowAdapter.getView(pos, mCachedView, mListView);
1545                int height = ((RowViewHolder) (v.getTag())).measuredRowHeight;
1546
1547                offset += (int) (height * mChooserRowAdapter.getRowScale(pos));
1548
1549                if (vt >= 0) {
1550                    mCachedViewType = vt;
1551                    mCachedView = v;
1552                } else {
1553                    mCachedViewType = -1;
1554                }
1555            }
1556
1557            mResolverDrawerLayout.setCollapsibleHeightReserved(offset);
1558        }
1559    }
1560}
1561