Implement default assist app setting

- Add "None" support to AppListPreference
- Add DefaultAssistPreference to manage assist;
- Add AppListPreferenceWithSettings to show a settings icon;
- Implement DefaultAssistPreference based on AppListPreferenceWithSettings;
- Move voice input settings into ManageAssist and implement it
  based on AppListPreferenceWithSettings;

Bug:20210110
Change-Id: If283b8b55a46b428ecfa6e45dc2123292b1d4302

3 files changed, 148 insertions, 483 deletions

diff --git a/src/com/android/settings/voice/VoiceInputListPreference.java b/src/com/android/settings/voice/VoiceInputListPreference.java
new file mode 100644
index 0000000..a131d21
--- /dev/null
+++ b/src/com/android/settings/voice/VoiceInputListPreference.java
@@ -0,0 +1,148 @@
+package com.android.settings.voice;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.provider.Settings;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.ListAdapter;
+
+import com.android.settings.AppListPreferenceWithSettings;
+import com.android.settings.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class VoiceInputListPreference extends AppListPreferenceWithSettings {
+
+    private VoiceInputHelper mHelper;
+
+    // The assist component name to restrict available voice inputs.
+    private ComponentName mAssistRestrict;
+
+    private final List<Integer> mAvailableIndexes = new ArrayList<>();
+
+    public VoiceInputListPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setDialogTitle(R.string.choose_voice_input_title);
+    }
+
+    @Override
+    protected ListAdapter createListAdapter() {
+        return new CustomAdapter(getContext(), getEntries());
+    }
+
+    @Override
+    protected boolean persistString(String value) {
+        for (int i = 0; i < mHelper.mAvailableInteractionInfos.size(); ++i) {
+            VoiceInputHelper.InteractionInfo info = mHelper.mAvailableInteractionInfos.get(i);
+            if (info.key.equals(value)) {
+                Settings.Secure.putString(getContext().getContentResolver(),
+                        Settings.Secure.VOICE_INTERACTION_SERVICE, value);
+                Settings.Secure.putString(getContext().getContentResolver(),
+                        Settings.Secure.VOICE_RECOGNITION_SERVICE,
+                        new ComponentName(info.service.packageName,
+                                info.serviceInfo.getRecognitionService())
+                                .flattenToShortString());
+                setSummary(getEntry());
+                setSettingsComponent(info.settings);
+                return true;
+            }
+        }
+
+        for (int i = 0; i < mHelper.mAvailableRecognizerInfos.size(); ++i) {
+            VoiceInputHelper.RecognizerInfo info = mHelper.mAvailableRecognizerInfos.get(i);
+            if (info.key.equals(value)) {
+                Settings.Secure.putString(getContext().getContentResolver(),
+                        Settings.Secure.VOICE_INTERACTION_SERVICE, "");
+                Settings.Secure.putString(getContext().getContentResolver(),
+                        Settings.Secure.VOICE_RECOGNITION_SERVICE, value);
+                setSummary(getEntry());
+                setSettingsComponent(info.settings);
+               return true;
+            }
+        }
+
+        setSettingsComponent(null);
+        return true;
+    }
+
+    @Override
+    public void setPackageNames(CharSequence[] packageNames, CharSequence defaultPackageName) {
+        // Skip since all entries are created from |mHelper|.
+    }
+
+    public void setAssistRestrict(ComponentName assistRestrict) {
+        mAssistRestrict = assistRestrict;
+    }
+
+    public void refreshVoiceInputs() {
+        mHelper = new VoiceInputHelper(getContext());
+        mHelper.buildUi();
+
+        final String assistKey =
+                mAssistRestrict == null ? "" : mAssistRestrict.flattenToShortString();
+
+        mAvailableIndexes.clear();
+        List<CharSequence> entries = new ArrayList<>();
+        List<CharSequence> values = new ArrayList<>();
+        for (int i = 0; i < mHelper.mAvailableInteractionInfos.size(); ++i) {
+            VoiceInputHelper.InteractionInfo info = mHelper.mAvailableInteractionInfos.get(i);
+            entries.add(info.appLabel);
+            values.add(info.key);
+
+            if (info.key.contentEquals(assistKey)) {
+                mAvailableIndexes.add(i);
+            }
+        }
+
+        final boolean assitIsService = !mAvailableIndexes.isEmpty();
+        final int serviceCount = entries.size();
+
+        for (int i = 0; i < mHelper.mAvailableRecognizerInfos.size(); ++i) {
+            VoiceInputHelper.RecognizerInfo info = mHelper.mAvailableRecognizerInfos.get(i);
+            entries.add(info.label);
+            values.add(info.key);
+            if (!assitIsService) {
+                mAvailableIndexes.add(serviceCount + i);
+            }
+        }
+        setEntries(entries.toArray(new CharSequence[entries.size()]));
+        setEntryValues(values.toArray(new CharSequence[values.size()]));
+
+        if (mHelper.mCurrentVoiceInteraction != null) {
+            setValue(mHelper.mCurrentVoiceInteraction.flattenToShortString());
+        } else if (mHelper.mCurrentRecognizer != null) {
+            setValue(mHelper.mCurrentRecognizer.flattenToShortString());
+        } else {
+            setValue(null);
+        }
+    }
+
+    private class CustomAdapter extends ArrayAdapter<CharSequence> {
+
+        public CustomAdapter(Context context, CharSequence[] objects) {
+            super(context, com.android.internal.R.layout.select_dialog_singlechoice_material,
+                    android.R.id.text1, objects);
+        }
+
+        @Override
+        public boolean areAllItemsEnabled() {
+            return false;
+        }
+
+        @Override
+        public boolean isEnabled(int position) {
+            return mAvailableIndexes.contains(position);
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            View view = super.getView(position, convertView, parent);
+            view.setEnabled(isEnabled(position));
+            return view;
+        }
+    }
+}
diff --git a/src/com/android/settings/voice/VoiceInputPreference.java b/src/com/android/settings/voice/VoiceInputPreference.java
deleted file mode 100644
index 38ef0ca..0000000
--- a/src/com/android/settings/voice/VoiceInputPreference.java
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settings.voice;
-
-import android.app.AlertDialog;
-import android.content.ComponentName;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.content.Intent;
-import android.preference.Preference;
-import android.util.Log;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.Checkable;
-import android.widget.CompoundButton;
-import android.widget.RadioButton;
-
-
-import com.android.settings.R;
-import com.android.settings.Utils;
-
-public final class VoiceInputPreference extends Preference {
-
-    private static final String TAG = "VoiceInputPreference";
-
-    private final CharSequence mLabel;
-
-    private final CharSequence mAppLabel;
-
-    private final CharSequence mAlertText;
-
-    private final ComponentName mSettingsComponent;
-
-    /**
-     * The shared radio button state, which button is checked etc.
-     */
-    private final RadioButtonGroupState mSharedState;
-
-    /**
-     * When true, the change callbacks on the radio button will not
-     * fire.
-     */
-    private volatile boolean mPreventRadioButtonCallbacks;
-
-    private View mSettingsIcon;
-    private RadioButton mRadioButton;
-
-    private final CompoundButton.OnCheckedChangeListener mRadioChangeListener =
-        new CompoundButton.OnCheckedChangeListener() {
-            @Override
-            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
-                onRadioButtonClicked(buttonView, isChecked);
-            }
-        };
-
-    public VoiceInputPreference(Context context, VoiceInputHelper.BaseInfo info,
-            CharSequence summary, CharSequence alertText, RadioButtonGroupState state) {
-        super(context);
-        setLayoutResource(R.layout.preference_tts_engine);
-
-        mSharedState = state;
-        mLabel = info.label;
-        mAppLabel = info.appLabel;
-        mAlertText = alertText;
-        mSettingsComponent = info.settings;
-        mPreventRadioButtonCallbacks = false;
-
-        setKey(info.key);
-        setTitle(info.label);
-        setSummary(summary);
-    }
-
-    @Override
-    public View getView(View convertView, ViewGroup parent) {
-        if (mSharedState == null) {
-            throw new IllegalStateException("Call to getView() before a call to" +
-                    "setSharedState()");
-        }
-
-        View view = super.getView(convertView, parent);
-        final RadioButton rb = (RadioButton) view.findViewById(R.id.tts_engine_radiobutton);
-        rb.setOnCheckedChangeListener(mRadioChangeListener);
-
-        boolean isChecked = getKey().equals(mSharedState.getCurrentKey());
-        if (isChecked) {
-            mSharedState.setCurrentChecked(rb);
-        }
-
-        mPreventRadioButtonCallbacks = true;
-        rb.setChecked(isChecked);
-        mPreventRadioButtonCallbacks = false;
-
-        mRadioButton = rb;
-
-        View textLayout = view.findViewById(R.id.tts_engine_pref_text);
-        textLayout.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (!rb.isChecked()) {
-                    onRadioButtonClicked(rb, true);
-                }
-            }
-        });
-
-        mSettingsIcon = view.findViewById(R.id.tts_engine_settings);
-        mSettingsIcon.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                Intent intent = new Intent(Intent.ACTION_MAIN);
-                intent.setComponent(mSettingsComponent);
-                getContext().startActivity(new Intent(intent));
-            }
-        });
-        updateCheckedState(isChecked);
-
-        return view;
-    }
-
-    private boolean shouldDisplayAlert() {
-        return mAlertText != null;
-    }
-
-    private void displayAlert(
-            final DialogInterface.OnClickListener positiveOnClickListener,
-            final DialogInterface.OnClickListener negativeOnClickListener) {
-        Log.i(TAG, "Displaying data alert for :" + getKey());
-
-        AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
-        String msg = String.format(getContext().getResources().getConfiguration().locale,
-                mAlertText.toString(), mAppLabel);
-        builder.setTitle(android.R.string.dialog_alert_title)
-                .setMessage(msg)
-                .setCancelable(true)
-                .setPositiveButton(android.R.string.ok, positiveOnClickListener)
-                .setNegativeButton(android.R.string.cancel, negativeOnClickListener)
-                .setOnCancelListener(new DialogInterface.OnCancelListener() {
-                    @Override public void onCancel(DialogInterface dialog) {
-                        negativeOnClickListener.onClick(dialog, DialogInterface.BUTTON_NEGATIVE);
-                    }
-                });
-
-        AlertDialog dialog = builder.create();
-        dialog.show();
-    }
-
-    public void doClick() {
-        mRadioButton.performClick();
-    }
-
-    void updateCheckedState(boolean isChecked) {
-        if (mSettingsComponent != null) {
-            mSettingsIcon.setVisibility(View.VISIBLE);
-            if (isChecked) {
-                mSettingsIcon.setEnabled(true);
-                mSettingsIcon.setAlpha(1);
-            } else {
-                mSettingsIcon.setEnabled(false);
-                mSettingsIcon.setAlpha(Utils.DISABLED_ALPHA);
-            }
-        } else {
-            mSettingsIcon.setVisibility(View.GONE);
-        }
-    }
-
-    void onRadioButtonClicked(final CompoundButton buttonView, boolean isChecked) {
-        if (mPreventRadioButtonCallbacks) {
-            return;
-        }
-        if (mSharedState.getCurrentChecked() == buttonView) {
-            updateCheckedState(isChecked);
-            return;
-        }
-
-        if (isChecked) {
-            // Should we alert user? if that's true, delay making engine current one.
-            if (shouldDisplayAlert()) {
-                displayAlert(new DialogInterface.OnClickListener() {
-                                 @Override
-                                 public void onClick(DialogInterface dialog, int which) {
-                                     makeCurrentChecked(buttonView);
-                                 }
-                             }, new DialogInterface.OnClickListener() {
-                                 @Override
-                                 public void onClick(DialogInterface dialog, int which) {
-                                     // Undo the click.
-                                     buttonView.setChecked(false);
-                                 }
-                             }
-                );
-            } else {
-                // Privileged engine, set it current
-                makeCurrentChecked(buttonView);
-            }
-        } else {
-            updateCheckedState(isChecked);
-        }
-    }
-
-    void makeCurrentChecked(Checkable current) {
-        if (mSharedState.getCurrentChecked() != null) {
-            mSharedState.getCurrentChecked().setChecked(false);
-        }
-        mSharedState.setCurrentChecked(current);
-        mSharedState.setCurrentKey(getKey());
-        updateCheckedState(true);
-        callChangeListener(mSharedState.getCurrentKey());
-        current.setChecked(true);
-    }
-
-    /**
-     * Holds all state that is common to this group of radio buttons, such
-     * as the currently selected key and the currently checked compound button.
-     * (which corresponds to this key).
-     */
-    public interface RadioButtonGroupState {
-        String getCurrentKey();
-        Checkable getCurrentChecked();
-
-        void setCurrentKey(String key);
-        void setCurrentChecked(Checkable current);
-    }
-}
diff --git a/src/com/android/settings/voice/VoiceInputSettings.java b/src/com/android/settings/voice/VoiceInputSettings.java
deleted file mode 100644
index bac297e..0000000
--- a/src/com/android/settings/voice/VoiceInputSettings.java
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settings.voice;
-
-import android.content.ComponentName;
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
-import android.content.pm.ServiceInfo;
-import android.preference.Preference;
-import android.provider.Settings;
-import android.service.voice.VoiceInteractionService;
-import android.service.voice.VoiceInteractionServiceInfo;
-import android.speech.RecognitionService;
-import com.android.internal.logging.MetricsLogger;
-import com.android.settings.R;
-import com.android.settings.SettingsPreferenceFragment;
-import com.android.settings.search.BaseSearchIndexProvider;
-import com.android.settings.search.Indexable;
-import com.android.settings.search.SearchIndexableRaw;
-import com.android.settings.voice.VoiceInputPreference.RadioButtonGroupState;
-
-import android.os.Bundle;
-import android.preference.PreferenceCategory;
-import android.widget.Checkable;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class VoiceInputSettings extends SettingsPreferenceFragment implements
-        Preference.OnPreferenceClickListener, RadioButtonGroupState, Indexable {
-
-    private static final String TAG = "VoiceInputSettings";
-    private static final boolean DBG = false;
-
-    /**
-     * Preference key for the engine selection preference.
-     */
-    private static final String KEY_SERVICE_PREFERENCE_SECTION =
-            "voice_service_preference_section";
-
-    private PreferenceCategory mServicePreferenceCategory;
-
-    private CharSequence mInteractorSummary;
-    private CharSequence mRecognizerSummary;
-    private CharSequence mInteractorWarning;
-
-    /**
-     * The currently selected engine.
-     */
-    private String mCurrentKey;
-
-    /**
-     * The engine checkbox that is currently checked. Saves us a bit of effort
-     * in deducing the right one from the currently selected engine.
-     */
-    private Checkable mCurrentChecked;
-
-    private VoiceInputHelper mHelper;
-
-    @Override
-    protected int getMetricsCategory() {
-        return MetricsLogger.VOICE_INPUT;
-    }
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        addPreferencesFromResource(R.xml.voice_input_settings);
-
-        mServicePreferenceCategory = (PreferenceCategory) findPreference(
-                KEY_SERVICE_PREFERENCE_SECTION);
-
-        mInteractorSummary = getActivity().getText(
-                R.string.voice_interactor_preference_summary);
-        mRecognizerSummary = getActivity().getText(
-                R.string.voice_recognizer_preference_summary);
-        mInteractorWarning = getActivity().getText(R.string.voice_interaction_security_warning);
-    }
-
-    @Override
-    public void onStart() {
-        super.onStart();
-        initSettings();
-    }
-
-    private void initSettings() {
-        mHelper = new VoiceInputHelper(getActivity());
-        mHelper.buildUi();
-
-        mServicePreferenceCategory.removeAll();
-
-        if (mHelper.mCurrentVoiceInteraction != null) {
-            mCurrentKey = mHelper.mCurrentVoiceInteraction.flattenToShortString();
-        } else if (mHelper.mCurrentRecognizer != null) {
-            mCurrentKey = mHelper.mCurrentRecognizer.flattenToShortString();
-        } else {
-            mCurrentKey = null;
-        }
-
-        for (int i=0; i<mHelper.mAvailableInteractionInfos.size(); i++) {
-            VoiceInputHelper.InteractionInfo info = mHelper.mAvailableInteractionInfos.get(i);
-            VoiceInputPreference pref = new VoiceInputPreference(getActivity(), info,
-                    mInteractorSummary, mInteractorWarning, this);
-            mServicePreferenceCategory.addPreference(pref);
-        }
-
-        for (int i=0; i<mHelper.mAvailableRecognizerInfos.size(); i++) {
-            VoiceInputHelper.RecognizerInfo info = mHelper.mAvailableRecognizerInfos.get(i);
-            VoiceInputPreference pref = new VoiceInputPreference(getActivity(), info,
-                    mRecognizerSummary, null, this);
-            mServicePreferenceCategory.addPreference(pref);
-        }
-    }
-
-    @Override
-    public Checkable getCurrentChecked() {
-        return mCurrentChecked;
-    }
-
-    @Override
-    public String getCurrentKey() {
-        return mCurrentKey;
-    }
-
-    @Override
-    public void setCurrentChecked(Checkable current) {
-        mCurrentChecked = current;
-    }
-
-    @Override
-    public void setCurrentKey(String key) {
-        mCurrentKey = key;
-        for (int i=0; i<mHelper.mAvailableInteractionInfos.size(); i++) {
-            VoiceInputHelper.InteractionInfo info = mHelper.mAvailableInteractionInfos.get(i);
-            if (info.key.equals(key)) {
-                // Put the new value back into secure settings.
-                Settings.Secure.putString(getActivity().getContentResolver(),
-                        Settings.Secure.VOICE_INTERACTION_SERVICE, key);
-                Settings.Secure.putString(getActivity().getContentResolver(),
-                        Settings.Secure.VOICE_RECOGNITION_SERVICE,
-                        new ComponentName(info.service.packageName,
-                                info.serviceInfo.getRecognitionService())
-                                .flattenToShortString());
-                return;
-            }
-        }
-
-        for (int i=0; i<mHelper.mAvailableRecognizerInfos.size(); i++) {
-            VoiceInputHelper.RecognizerInfo info = mHelper.mAvailableRecognizerInfos.get(i);
-            if (info.key.equals(key)) {
-                Settings.Secure.putString(getActivity().getContentResolver(),
-                        Settings.Secure.VOICE_INTERACTION_SERVICE, "");
-                Settings.Secure.putString(getActivity().getContentResolver(),
-                        Settings.Secure.VOICE_RECOGNITION_SERVICE, key);
-                return;
-            }
-        }
-    }
-
-    @Override
-    public boolean onPreferenceClick(Preference preference) {
-        if (preference instanceof VoiceInputPreference) {
-            ((VoiceInputPreference)preference).doClick();
-        }
-        return true;
-    }
-
-    // For Search
-    public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
-        new BaseSearchIndexProvider() {
-
-            @Override
-            public List<SearchIndexableRaw> getRawDataToIndex(Context context,
-                    boolean enabled) {
-
-                List<SearchIndexableRaw> indexables = new ArrayList<>();
-
-                final String screenTitle = context.getString(R.string.voice_input_settings_title);
-
-                SearchIndexableRaw indexable = new SearchIndexableRaw(context);
-                indexable.key = "voice_service_preference_section_title";
-                indexable.title = context.getString(R.string.voice_service_preference_section_title);
-                indexable.screenTitle = screenTitle;
-                indexables.add(indexable);
-
-                final List<ResolveInfo> voiceInteractions =
-                        context.getPackageManager().queryIntentServices(
-                                new Intent(VoiceInteractionService.SERVICE_INTERFACE),
-                                PackageManager.GET_META_DATA);
-
-                final int countInteractions = voiceInteractions.size();
-                for (int i = 0; i < countInteractions; i++) {
-                    ResolveInfo info = voiceInteractions.get(i);
-                    VoiceInteractionServiceInfo visInfo = new VoiceInteractionServiceInfo(
-                            context.getPackageManager(), info.serviceInfo);
-                    if (visInfo.getParseError() != null) {
-                        continue;
-                    }
-                    indexables.add(getSearchIndexableRaw(context, info, screenTitle));
-                }
-
-                final List<ResolveInfo> recognitions =
-                        context.getPackageManager().queryIntentServices(
-                                new Intent(RecognitionService.SERVICE_INTERFACE),
-                                PackageManager.GET_META_DATA);
-
-                final int countRecognitions = recognitions.size();
-                for (int i = 0; i < countRecognitions; i++) {
-                    ResolveInfo info = recognitions.get(i);
-                    indexables.add(getSearchIndexableRaw(context, info, screenTitle));
-                }
-
-                return indexables;
-            }
-
-            private SearchIndexableRaw getSearchIndexableRaw(Context context,
-                    ResolveInfo info, String screenTitle) {
-
-                ServiceInfo serviceInfo = info.serviceInfo;
-                ComponentName componentName = new ComponentName(serviceInfo.packageName,
-                        serviceInfo.name);
-
-                SearchIndexableRaw indexable = new SearchIndexableRaw(context);
-                indexable.key = componentName.flattenToString();
-                indexable.title = info.loadLabel(context.getPackageManager()).toString();
-                indexable.screenTitle = screenTitle;
-
-                return indexable;
-            }
-        };
-}