/*
* Copyright (C) 2008 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 android.app;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.Resources.NotFoundException;
import android.database.Cursor;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemClock;
import android.server.search.SearchableInfo;
import android.speech.RecognizerIntent;
import android.text.Editable;
import android.text.InputType;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.CursorAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.WrapperListAdapter;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import java.lang.ref.WeakReference;
import java.util.concurrent.atomic.AtomicLong;
/**
* In-application-process implementation of Search Bar. This is still controlled by the
* SearchManager, but it runs in the current activity's process to keep things lighter weight.
*
* @hide
*/
public class SearchDialog extends Dialog implements OnItemClickListener, OnItemSelectedListener {
// Debugging support
final static String LOG_TAG = "SearchDialog";
private static final int DBG_LOG_TIMING = 0;
final static int DBG_JAM_THREADING = 0;
// interaction with runtime
IntentFilter mCloseDialogsFilter;
IntentFilter mPackageFilter;
private static final String INSTANCE_KEY_COMPONENT = "comp";
private static final String INSTANCE_KEY_APPDATA = "data";
private static final String INSTANCE_KEY_GLOBALSEARCH = "glob";
private static final String INSTANCE_KEY_DISPLAY_QUERY = "dQry";
private static final String INSTANCE_KEY_DISPLAY_SEL_START = "sel1";
private static final String INSTANCE_KEY_DISPLAY_SEL_END = "sel2";
private static final String INSTANCE_KEY_USER_QUERY = "uQry";
private static final String INSTANCE_KEY_SUGGESTION_QUERY = "sQry";
private static final String INSTANCE_KEY_SELECTED_ELEMENT = "slEl";
private static final int INSTANCE_SELECTED_BUTTON = -2;
private static final int INSTANCE_SELECTED_QUERY = -1;
// views & widgets
private TextView mBadgeLabel;
private AutoCompleteTextView mSearchTextField;
private Button mGoButton;
private ImageButton mVoiceButton;
// interaction with searchable application
private ComponentName mLaunchComponent;
private Bundle mAppSearchData;
private boolean mGlobalSearchMode;
private Context mActivityContext;
// interaction with the search manager service
private SearchableInfo mSearchable;
// support for suggestions
private String mUserQuery = null;
private int mUserQuerySelStart;
private int mUserQuerySelEnd;
private boolean mLeaveJammedQueryOnRefocus = false;
private String mPreviousSuggestionQuery = null;
private int mPresetSelection = -1;
private String mSuggestionAction = null;
private Uri mSuggestionData = null;
private String mSuggestionQuery = null;
// For voice searching
private Intent mVoiceWebSearchIntent;
private Intent mVoiceAppSearchIntent;
// support for AutoCompleteTextView suggestions display
private SuggestionsAdapter mSuggestionsAdapter;
/**
* Constructor - fires it up and makes it look like the search UI.
*
* @param context Application Context we can use for system acess
*/
public SearchDialog(Context context) {
super(context, com.android.internal.R.style.Theme_SearchBar);
}
/**
* We create the search dialog just once, and it stays around (hidden)
* until activated by the user.
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Window theWindow = getWindow();
theWindow.setGravity(Gravity.TOP|Gravity.FILL_HORIZONTAL);
setContentView(com.android.internal.R.layout.search_bar);
theWindow.setLayout(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
WindowManager.LayoutParams lp = theWindow.getAttributes();
lp.setTitle("Search Dialog");
lp.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE;
theWindow.setAttributes(lp);
// get the view elements for local access
mBadgeLabel = (TextView) findViewById(com.android.internal.R.id.search_badge);
mSearchTextField = (AutoCompleteTextView)
findViewById(com.android.internal.R.id.search_src_text);
mGoButton = (Button) findViewById(com.android.internal.R.id.search_go_btn);
mVoiceButton = (ImageButton) findViewById(com.android.internal.R.id.search_voice_btn);
// attach listeners
mSearchTextField.addTextChangedListener(mTextWatcher);
mSearchTextField.setOnKeyListener(mTextKeyListener);
mGoButton.setOnClickListener(mGoButtonClickListener);
mGoButton.setOnKeyListener(mButtonsKeyListener);
mVoiceButton.setOnClickListener(mVoiceButtonClickListener);
mVoiceButton.setOnKeyListener(mButtonsKeyListener);
// pre-hide all the extraneous elements
mBadgeLabel.setVisibility(View.GONE);
// Additional adjustments to make Dialog work for Search
// Touching outside of the search dialog will dismiss it
setCanceledOnTouchOutside(true);
// Set up broadcast filters
mCloseDialogsFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
mPackageFilter = new IntentFilter();
mPackageFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
mPackageFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
mPackageFilter.addAction(Intent.ACTION_PACKAGE_CHANGED);
mPackageFilter.addDataScheme("package");
// Save voice intent for later queries/launching
mVoiceWebSearchIntent = new Intent(RecognizerIntent.ACTION_WEB_SEARCH);
mVoiceWebSearchIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
mVoiceAppSearchIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
}
/**
* Set up the search dialog
*
* @param Returns true if search dialog launched, false if not
*/
public boolean show(String initialQuery, boolean selectInitialQuery,
ComponentName componentName, Bundle appSearchData, boolean globalSearch) {
if (isShowing()) {
// race condition - already showing but not handling events yet.
// in this case, just discard the "show" request
return true;
}
// Get searchable info from search manager and use to set up other elements of UI
// Do this first so we can get out quickly if there's nothing to search
ISearchManager sms;
sms = ISearchManager.Stub.asInterface(ServiceManager.getService(Context.SEARCH_SERVICE));
try {
mSearchable = sms.getSearchableInfo(componentName, globalSearch);
} catch (RemoteException e) {
mSearchable = null;
}
if (mSearchable == null) {
// unfortunately, we can't log here. it would be logspam every time the user
// clicks the "search" key on a non-search app
return false;
}
// OK, we're going to show ourselves
super.show();
setupSearchableInfo();
mLaunchComponent = componentName;
mAppSearchData = appSearchData;
mGlobalSearchMode = globalSearch;
// receive broadcasts
getContext().registerReceiver(mBroadcastReceiver, mCloseDialogsFilter);
getContext().registerReceiver(mBroadcastReceiver, mPackageFilter);
// configure the autocomplete aspects of the input box
mSearchTextField.setOnItemClickListener(this);
mSearchTextField.setOnItemSelectedListener(this);
// This conversion is necessary to force a preload of the EditText and thus force
// suggestions to be presented (even for an empty query)
if (initialQuery == null) {
initialQuery = ""; // This forces the preload to happen, triggering suggestions
}
// attach the suggestions adapter, if suggestions are available
// The existence of a suggestions authority is the proxy for "suggestions available here"
if (mSearchable.getSuggestAuthority() == null) {
mSuggestionsAdapter = null;
mSearchTextField.setAdapter(mSuggestionsAdapter);
mSearchTextField.setText(initialQuery);
} else {
mSuggestionsAdapter = new SuggestionsAdapter(getContext(), mSearchable,
mSearchTextField);
mSearchTextField.setAdapter(mSuggestionsAdapter);
// finally, load the user's initial text (which may trigger suggestions)
mSuggestionsAdapter.setNonUserQuery(false);
mSearchTextField.setText(initialQuery);
}
if (selectInitialQuery) {
mSearchTextField.selectAll();
} else {
mSearchTextField.setSelection(initialQuery.length());
}
return true;
}
/**
* The default show() for this Dialog is not supported.
*/
@Override
public void show() {
return;
}
/**
* The search dialog is being dismissed, so handle all of the local shutdown operations.
*
* This function is designed to be idempotent so that dismiss() can be safely called at any time
* (even if already closed) and more likely to really dump any memory. No leaks!
*/
@Override
public void onStop() {
super.onStop();
setOnCancelListener(null);
setOnDismissListener(null);
// stop receiving broadcasts (throws exception if none registered)
try {
getContext().unregisterReceiver(mBroadcastReceiver);
} catch (RuntimeException e) {
// This is OK - it just means we didn't have any registered
}
// close any leftover cursor
if (mSuggestionsAdapter != null) {
mSuggestionsAdapter.changeCursor(null);
}
// dump extra memory we're hanging on to
mLaunchComponent = null;
mAppSearchData = null;
mSearchable = null;
mSuggestionAction = null;
mSuggestionData = null;
mSuggestionQuery = null;
mActivityContext = null;
mPreviousSuggestionQuery = null;
mUserQuery = null;
}
/**
* Save the minimal set of data necessary to recreate the search
*
* @return A bundle with the state of the dialog.
*/
@Override
public Bundle onSaveInstanceState() {
Bundle bundle = new Bundle();
// setup info so I can recreate this particular search
bundle.putParcelable(INSTANCE_KEY_COMPONENT, mLaunchComponent);
bundle.putBundle(INSTANCE_KEY_APPDATA, mAppSearchData);
bundle.putBoolean(INSTANCE_KEY_GLOBALSEARCH, mGlobalSearchMode);
// UI state
bundle.putString(INSTANCE_KEY_DISPLAY_QUERY, mSearchTextField.getText().toString());
bundle.putInt(INSTANCE_KEY_DISPLAY_SEL_START, mSearchTextField.getSelectionStart());
bundle.putInt(INSTANCE_KEY_DISPLAY_SEL_END, mSearchTextField.getSelectionEnd());
bundle.putString(INSTANCE_KEY_USER_QUERY, mUserQuery);
bundle.putString(INSTANCE_KEY_SUGGESTION_QUERY, mPreviousSuggestionQuery);
int selectedElement = INSTANCE_SELECTED_QUERY;
if (mGoButton.isFocused()) {
selectedElement = INSTANCE_SELECTED_BUTTON;
} else if (mSearchTextField.isPopupShowing()) {
selectedElement = 0; // TODO mSearchTextField.getListSelection() // 0..n
}
bundle.putInt(INSTANCE_KEY_SELECTED_ELEMENT, selectedElement);
return bundle;
}
/**
* Restore the state of the dialog from a previously saved bundle.
*
* @param savedInstanceState The state of the dialog previously saved by
* {@link #onSaveInstanceState()}.
*/
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
// Get the launch info
ComponentName launchComponent = savedInstanceState.getParcelable(INSTANCE_KEY_COMPONENT);
Bundle appSearchData = savedInstanceState.getBundle(INSTANCE_KEY_APPDATA);
boolean globalSearch = savedInstanceState.getBoolean(INSTANCE_KEY_GLOBALSEARCH);
// get the UI state
String displayQuery = savedInstanceState.getString(INSTANCE_KEY_DISPLAY_QUERY);
int querySelStart = savedInstanceState.getInt(INSTANCE_KEY_DISPLAY_SEL_START, -1);
int querySelEnd = savedInstanceState.getInt(INSTANCE_KEY_DISPLAY_SEL_END, -1);
String userQuery = savedInstanceState.getString(INSTANCE_KEY_USER_QUERY);
int selectedElement = savedInstanceState.getInt(INSTANCE_KEY_SELECTED_ELEMENT);
String suggestionQuery = savedInstanceState.getString(INSTANCE_KEY_SUGGESTION_QUERY);
// show the dialog. skip any show/hide animation, we want to go fast.
// send the text that actually generates the suggestions here; we'll replace the display
// text as necessary in a moment.
if (!show(suggestionQuery, false, launchComponent, appSearchData, globalSearch)) {
// for some reason, we couldn't re-instantiate
return;
}
if (mSuggestionsAdapter != null) {
mSuggestionsAdapter.setNonUserQuery(true);
}
mSearchTextField.setText(displayQuery);
// TODO because the new query is (not) processed in another thread, we can't just
// take away this flag (yet). The better solution here is going to require a new API
// in AutoCompleteTextView which allows us to change the text w/o changing the suggestions.
// mSuggestionsAdapter.setNonUserQuery(false);
// clean up the selection state
switch (selectedElement) {
case INSTANCE_SELECTED_BUTTON:
mGoButton.setEnabled(true);
mGoButton.setFocusable(true);
mGoButton.requestFocus();
break;
case INSTANCE_SELECTED_QUERY:
if (querySelStart >= 0 && querySelEnd >= 0) {
mSearchTextField.requestFocus();
mSearchTextField.setSelection(querySelStart, querySelEnd);
}
break;
default:
// defer selecting a list element until suggestion list appears
mPresetSelection = selectedElement;
// TODO mSearchTextField.setListSelection(selectedElement)
break;
}
}
/**
* Hook for updating layout on a rotation
*
*/
public void onConfigurationChanged(Configuration newConfig) {
if (isShowing()) {
// Redraw (resources may have changed)
updateSearchButton();
updateSearchBadge();
updateQueryHint();
}
}
/**
* Use SearchableInfo record (from search manager service) to preconfigure the UI in various
* ways.
*/
private void setupSearchableInfo() {
if (mSearchable != null) {
mActivityContext = mSearchable.getActivityContext(getContext());
updateSearchButton();
updateSearchBadge();
updateQueryHint();
updateVoiceButton();
// In order to properly configure the input method (if one is being used), we
// need to let it know if we'll be providing suggestions. Although it would be
// difficult/expensive to know if every last detail has been configured properly, we
// can at least see if a suggestions provider has been configured, and use that
// as our trigger.
int inputType = mSearchable.getInputType();
// We only touch this if the input type is set up for text (which it almost certainly
// should be, in the case of search!)
if ((inputType & InputType.TYPE_MASK_CLASS) == InputType.TYPE_CLASS_TEXT) {
// The existence of a suggestions authority is the proxy for "suggestions
// are available here"
inputType &= ~InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE;
if (mSearchable.getSuggestAuthority() != null) {
inputType |= InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE;
}
}
mSearchTextField.setInputType(inputType);
mSearchTextField.setImeOptions(mSearchable.getImeOptions());
}
}
/**
* The list of installed packages has just changed. This means that our current context
* may no longer be valid. This would only happen if a package is installed/removed exactly
* when the search bar is open. So for now we're just going to close the search
* bar.
*
* Anything fancier would require some checks to see if the user's context was still valid.
* Which would be messier.
*/
public void onPackageListChange() {
cancel();
}
/**
* Update the text in the search button. Note: This is deprecated functionality, for
* 1.0 compatibility only.
*/
private void updateSearchButton() {
String textLabel = null;
Drawable iconLabel = null;
int textId = mSearchable.getSearchButtonText();
if (textId != 0) {
textLabel = mActivityContext.getResources().getString(textId);
} else {
iconLabel = getContext().getResources().
getDrawable(com.android.internal.R.drawable.ic_btn_search);
}
mGoButton.setText(textLabel);
mGoButton.setCompoundDrawablesWithIntrinsicBounds(iconLabel, null, null, null);
}
/**
* Setup the search "Badge" if request by mode flags.
*/
private void updateSearchBadge() {
// assume both hidden
int visibility = View.GONE;
Drawable icon = null;
String text = null;
// optionally show one or the other.
if (mSearchable.mBadgeIcon) {
icon = mActivityContext.getResources().getDrawable(mSearchable.getIconId());
visibility = View.VISIBLE;
} else if (mSearchable.mBadgeLabel) {
text = mActivityContext.getResources().getText(mSearchable.getLabelId()).toString();
visibility = View.VISIBLE;
}
mBadgeLabel.setCompoundDrawablesWithIntrinsicBounds(icon, null, null, null);
mBadgeLabel.setText(text);
mBadgeLabel.setVisibility(visibility);
}
/**
* Update the hint in the query text field.
*/
private void updateQueryHint() {
if (isShowing()) {
String hint = null;
if (mSearchable != null) {
int hintId = mSearchable.getHintId();
if (hintId != 0) {
hint = mActivityContext.getString(hintId);
}
}
mSearchTextField.setHint(hint);
}
}
/**
* Update the visibility of the voice button. There are actually two voice search modes,
* either of which will activate the button.
*/
private void updateVoiceButton() {
int visibility = View.GONE;
if (mSearchable.getVoiceSearchEnabled()) {
Intent testIntent = null;
if (mSearchable.getVoiceSearchLaunchWebSearch()) {
testIntent = mVoiceWebSearchIntent;
} else if (mSearchable.getVoiceSearchLaunchRecognizer()) {
testIntent = mVoiceAppSearchIntent;
}
if (testIntent != null) {
ResolveInfo ri = getContext().getPackageManager().
resolveActivity(testIntent, PackageManager.MATCH_DEFAULT_ONLY);
if (ri != null) {
visibility = View.VISIBLE;
}
}
}
mVoiceButton.setVisibility(visibility);
}
/**
* Listeners of various types
*/
/**
* Dialog's OnKeyListener implements various search-specific functionality
*
* @param keyCode This is the keycode of the typed key, and is the same value as
* found in the KeyEvent parameter.
* @param event The complete event record for the typed key
*
* @return Return true if the event was handled here, or false if not.
*/
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
cancel();
return true;
case KeyEvent.KEYCODE_SEARCH:
if (TextUtils.getTrimmedLength(mSearchTextField.getText()) != 0) {
launchQuerySearch(KeyEvent.KEYCODE_UNKNOWN, null);
} else {
cancel();
}
return true;
default:
SearchableInfo.ActionKeyInfo actionKey = mSearchable.findActionKey(keyCode);
if ((actionKey != null) && (actionKey.mQueryActionMsg != null)) {
launchQuerySearch(keyCode, actionKey.mQueryActionMsg);
return true;
}
break;
}
return false;
}
/**
* Callback to watch the textedit field for empty/non-empty
*/
private TextWatcher mTextWatcher = new TextWatcher() {
public void beforeTextChanged(CharSequence s, int start, int
before, int after) { }
public void onTextChanged(CharSequence s, int start,
int before, int after) {
if (DBG_LOG_TIMING == 1) {
dbgLogTiming("onTextChanged()");
}
updateWidgetState();
// Only do suggestions if actually typed by user
if ((mSuggestionsAdapter != null) && !mSuggestionsAdapter.getNonUserQuery()) {
mPreviousSuggestionQuery = s.toString();
mUserQuery = mSearchTextField.getText().toString();
mUserQuerySelStart = mSearchTextField.getSelectionStart();
mUserQuerySelEnd = mSearchTextField.getSelectionEnd();
}
}
public void afterTextChanged(Editable s) { }
};
/**
* Enable/Disable the cancel button based on edit text state (any text?)
*/
private void updateWidgetState() {
// enable the button if we have one or more non-space characters
boolean enabled =
TextUtils.getTrimmedLength(mSearchTextField.getText()) != 0;
mGoButton.setEnabled(enabled);
mGoButton.setFocusable(enabled);
}
private final static String[] ONE_LINE_FROM = {SearchManager.SUGGEST_COLUMN_TEXT_1 };
private final static String[] ONE_LINE_ICONS_FROM = {SearchManager.SUGGEST_COLUMN_TEXT_1,
SearchManager.SUGGEST_COLUMN_ICON_1,
SearchManager.SUGGEST_COLUMN_ICON_2};
private final static String[] TWO_LINE_FROM = {SearchManager.SUGGEST_COLUMN_TEXT_1,
SearchManager.SUGGEST_COLUMN_TEXT_2 };
private final static String[] TWO_LINE_ICONS_FROM = {SearchManager.SUGGEST_COLUMN_TEXT_1,
SearchManager.SUGGEST_COLUMN_TEXT_2,
SearchManager.SUGGEST_COLUMN_ICON_1,
SearchManager.SUGGEST_COLUMN_ICON_2 };
private final static int[] ONE_LINE_TO = {com.android.internal.R.id.text1};
private final static int[] ONE_LINE_ICONS_TO = {com.android.internal.R.id.text1,
com.android.internal.R.id.icon1,
com.android.internal.R.id.icon2};
private final static int[] TWO_LINE_TO = {com.android.internal.R.id.text1,
com.android.internal.R.id.text2};
private final static int[] TWO_LINE_ICONS_TO = {com.android.internal.R.id.text1,
com.android.internal.R.id.text2,
com.android.internal.R.id.icon1,
com.android.internal.R.id.icon2};
/**
* Safely retrieve the suggestions cursor adapter from the ListView
*
* @param adapterView The ListView containing our adapter
* @result The CursorAdapter that we installed, or null if not set
*/
private static CursorAdapter getSuggestionsAdapter(AdapterView<?> adapterView) {
CursorAdapter result = null;
if (adapterView != null) {
Object ad = adapterView.getAdapter();
if (ad instanceof CursorAdapter) {
result = (CursorAdapter) ad;
} else if (ad instanceof WrapperListAdapter) {
result = (CursorAdapter) ((WrapperListAdapter)ad).getWrappedAdapter();
}
}
return result;
}
/**
* React to typing in the GO search button by refocusing to EditText.
* Continue typing the query.
*/
View.OnKeyListener mButtonsKeyListener = new View.OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
// also guard against possible race conditions (late arrival after dismiss)
if (mSearchable != null) {
return refocusingKeyListener(v, keyCode, event);
}
return false;
}
};
/**
* React to a click in the GO button by launching a search.
*/
View.OnClickListener mGoButtonClickListener = new View.OnClickListener() {
public void onClick(View v) {
// also guard against possible race conditions (late arrival after dismiss)
if (mSearchable != null) {
launchQuerySearch(KeyEvent.KEYCODE_UNKNOWN, null);
}
}
};
/**
* React to a click in the voice search button.
*/
View.OnClickListener mVoiceButtonClickListener = new View.OnClickListener() {
public void onClick(View v) {
try {
if (mSearchable.getVoiceSearchLaunchWebSearch()) {
getContext().startActivity(mVoiceWebSearchIntent);
dismiss();
} else if (mSearchable.getVoiceSearchLaunchRecognizer()) {
Intent appSearchIntent = createVoiceAppSearchIntent(mVoiceAppSearchIntent);
getContext().startActivity(appSearchIntent);
dismiss();
}
} catch (ActivityNotFoundException e) {
// Should not happen, since we check the availability of
// voice search before showing the button. But just in case...
Log.w(LOG_TAG, "Could not find voice search activity");
}
}
};
/**
* Create and return an Intent that can launch the voice search activity, perform a specific
* voice transcription, and forward the results to the searchable activity.
*
* @param baseIntent The voice app search intent to start from
* @return A completely-configured intent ready to send to the voice search activity
*/
private Intent createVoiceAppSearchIntent(Intent baseIntent) {
// create the necessary intent to set up a search-and-forward operation
// in the voice search system. We have to keep the bundle separate,
// because it becomes immutable once it enters the PendingIntent
Intent queryIntent = new Intent(Intent.ACTION_SEARCH);
queryIntent.setComponent(mSearchable.mSearchActivity);
PendingIntent pending = PendingIntent.getActivity(
getContext(), 0, queryIntent, PendingIntent.FLAG_ONE_SHOT);
// Now set up the bundle that will be inserted into the pending intent
// when it's time to do the search. We always build it here (even if empty)
// because the voice search activity will always need to insert "QUERY" into
// it anyway.
Bundle queryExtras = new Bundle();
if (mAppSearchData != null) {
queryExtras.putBundle(SearchManager.APP_DATA, mAppSearchData);
}
// Now build the intent to launch the voice search. Add all necessary
// extras to launch the voice recognizer, and then all the necessary extras
// to forward the results to the searchable activity
Intent voiceIntent = new Intent(baseIntent);
// Add all of the configuration options supplied by the searchable's metadata
String languageModel = RecognizerIntent.LANGUAGE_MODEL_FREE_FORM;
String prompt = null;
String language = null;
int maxResults = 1;
Resources resources = mActivityContext.getResources();
if (mSearchable.getVoiceLanguageModeId() != 0) {
languageModel = resources.getString(mSearchable.getVoiceLanguageModeId());
}
if (mSearchable.getVoicePromptTextId() != 0) {
prompt = resources.getString(mSearchable.getVoicePromptTextId());
}
if (mSearchable.getVoiceLanguageId() != 0) {
language = resources.getString(mSearchable.getVoiceLanguageId());
}
if (mSearchable.getVoiceMaxResults() != 0) {
maxResults = mSearchable.getVoiceMaxResults();
}
voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, languageModel);
voiceIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, prompt);
voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, language);
voiceIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, maxResults);
// Add the values that configure forwarding the results
voiceIntent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT, pending);
voiceIntent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT_BUNDLE, queryExtras);
return voiceIntent;
}
/**
* React to the user typing "enter" or other hardwired keys while typing in the search box.
* This handles these special keys while the edit box has focus.
*/
View.OnKeyListener mTextKeyListener = new View.OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
cancel();
return true;
}
// also guard against possible race conditions (late arrival after dismiss)
if (mSearchable != null &&
TextUtils.getTrimmedLength(mSearchTextField.getText()) > 0) {
if (DBG_LOG_TIMING == 1) {
dbgLogTiming("doTextKey()");
}
// dispatch "typing in the list" first
if (mSearchTextField.isPopupShowing() &&
mSearchTextField.getListSelection() != ListView.INVALID_POSITION) {
return onSuggestionsKey(v, keyCode, event);
}
// otherwise, dispatch an "edit view" key
switch (keyCode) {
case KeyEvent.KEYCODE_ENTER:
if (event.getAction() == KeyEvent.ACTION_UP) {
v.cancelLongPress();
launchQuerySearch(KeyEvent.KEYCODE_UNKNOWN, null);
return true;
}
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
// capture the EditText state, so we can restore the user entry later
mUserQuery = mSearchTextField.getText().toString();
mUserQuerySelStart = mSearchTextField.getSelectionStart();
mUserQuerySelEnd = mSearchTextField.getSelectionEnd();
// pass through - we're just watching here
break;
default:
if (event.getAction() == KeyEvent.ACTION_DOWN) {
SearchableInfo.ActionKeyInfo actionKey = mSearchable.findActionKey(keyCode);
if ((actionKey != null) && (actionKey.mQueryActionMsg != null)) {
launchQuerySearch(keyCode, actionKey.mQueryActionMsg);
return true;
}
}
break;
}
}
return false;
}
};
/**
* React to the user typing while the suggestions are focused. First, check for action
* keys. If not handled, try refocusing regular characters into the EditText. In this case,
* replace the query text (start typing fresh text).
*/
private boolean onSuggestionsKey(View v, int keyCode, KeyEvent event) {
boolean handled = false;
// also guard against possible race conditions (late arrival after dismiss)
if (mSearchable != null) {
handled = doSuggestionsKey(v, keyCode, event);
}
return handled;
}
/**
* Per UI design, we're going to "steer" any typed keystrokes back into the EditText
* box, even if the user has navigated the focus to the dropdown or to the GO button.
*
* @param v The view into which the keystroke was typed
* @param keyCode keyCode of entered key
* @param event Full KeyEvent record of entered key
*/
private boolean refocusingKeyListener(View v, int keyCode, KeyEvent event) {
boolean handled = false;
if (!event.isSystem() &&
(keyCode != KeyEvent.KEYCODE_DPAD_UP) &&
(keyCode != KeyEvent.KEYCODE_DPAD_DOWN) &&
(keyCode != KeyEvent.KEYCODE_DPAD_LEFT) &&
(keyCode != KeyEvent.KEYCODE_DPAD_RIGHT) &&
(keyCode != KeyEvent.KEYCODE_DPAD_CENTER)) {
// restore focus and give key to EditText ...
// but don't replace the user's query
mLeaveJammedQueryOnRefocus = true;
if (mSearchTextField.requestFocus()) {
handled = mSearchTextField.dispatchKeyEvent(event);
}
mLeaveJammedQueryOnRefocus = false;
}
return handled;
}
/**
* Update query text based on transitions in and out of suggestions list.
*/
/*
* TODO - figure out if this logic is required for the autocomplete text view version
OnFocusChangeListener mSuggestFocusListener = new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
// also guard against possible race conditions (late arrival after dismiss)
if (mSearchable == null) {
return;
}
// Update query text based on navigation in to/out of the suggestions list
if (hasFocus) {
// Entering the list view - record selection point from user's query
mUserQuery = mSearchTextField.getText().toString();
mUserQuerySelStart = mSearchTextField.getSelectionStart();
mUserQuerySelEnd = mSearchTextField.getSelectionEnd();
// then update the query to match the entered selection
jamSuggestionQuery(true, mSuggestionsList,
mSuggestionsList.getSelectedItemPosition());
} else {
// Exiting the list view
if (mSuggestionsList.getSelectedItemPosition() < 0) {
// Direct exit - Leave new suggestion in place (do nothing)
} else {
// Navigation exit - restore user's query text
if (!mLeaveJammedQueryOnRefocus) {
jamSuggestionQuery(false, null, -1);
}
}
}
}
};
*/
/**
* This is the listener for the ACTION_CLOSE_SYSTEM_DIALOGS intent. It's an indication that
* we should close ourselves immediately, in order to allow a higher-priority UI to take over
* (e.g. phone call received).
*/
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(action)) {
cancel();
} else if (Intent.ACTION_PACKAGE_ADDED.equals(action)
|| Intent.ACTION_PACKAGE_REMOVED.equals(action)
|| Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
onPackageListChange();
}
}
};
@Override
public void cancel() {
// We made sure the IME was displayed, so also make sure it is closed
// when we go away.
InputMethodManager imm = (InputMethodManager)getContext()
.getSystemService(Context.INPUT_METHOD_SERVICE);
if (imm != null) {
imm.hideSoftInputFromWindow(
getWindow().getDecorView().getWindowToken(), 0);
}
super.cancel();
}
/**
* Various ways to launch searches
*/
/**
* React to the user clicking the "GO" button. Hide the UI and launch a search.
*
* @param actionKey Pass a keycode if the launch was triggered by an action key. Pass
* KeyEvent.KEYCODE_UNKNOWN for no actionKey code.
* @param actionMsg Pass the suggestion-provided message if the launch was triggered by an
* action key. Pass null for no actionKey message.
*/
private void launchQuerySearch(int actionKey, final String actionMsg) {
final String query = mSearchTextField.getText().toString();
final Bundle appData = mAppSearchData;
final SearchableInfo si = mSearchable; // cache briefly (dismiss() nulls it)
dismiss();
sendLaunchIntent(Intent.ACTION_SEARCH, null, query, appData, actionKey, actionMsg, si);
}
/**
* React to the user typing an action key while in the suggestions list
*/
private boolean doSuggestionsKey(View v, int keyCode, KeyEvent event) {
// Exit early in case of race condition
if (mSuggestionsAdapter == null) {
return false;
}
if (event.getAction() == KeyEvent.ACTION_DOWN) {
if (DBG_LOG_TIMING == 1) {
dbgLogTiming("doSuggestionsKey()");
}
// First, check for enter or search (both of which we'll treat as a "click")
if (keyCode == KeyEvent.KEYCODE_ENTER || keyCode == KeyEvent.KEYCODE_SEARCH) {
int position = mSearchTextField.getListSelection();
return launchSuggestion(mSuggestionsAdapter, position);
}
// Next, check for left/right moves, which we use to "return" the user to the edit view
if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT || keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
// give "focus" to text editor, but don't restore the user's original query
int selPoint = (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) ?
0 : mSearchTextField.length();
mSearchTextField.setSelection(selPoint);
mSearchTextField.setListSelection(0);
mSearchTextField.clearListSelection();
return true;
}
// Next, check for an "up and out" move
if (keyCode == KeyEvent.KEYCODE_DPAD_UP && 0 == mSearchTextField.getListSelection()) {
jamSuggestionQuery(false, null, -1);
// let ACTV complete the move
return false;
}
// Next, check for an "action key"
SearchableInfo.ActionKeyInfo actionKey = mSearchable.findActionKey(keyCode);
if ((actionKey != null) &&
((actionKey.mSuggestActionMsg != null) ||
(actionKey.mSuggestActionMsgColumn != null))) {
// launch suggestion using action key column
int position = mSearchTextField.getListSelection();
if (position >= 0) {
Cursor c = mSuggestionsAdapter.getCursor();
if (c.moveToPosition(position)) {
final String actionMsg = getActionKeyMessage(c, actionKey);
if (actionMsg != null && (actionMsg.length() > 0)) {
// shut down search bar and launch the activity
// cache everything we need because dismiss releases mems
setupSuggestionIntent(c, mSearchable);
final String query = mSearchTextField.getText().toString();
final Bundle appData = mAppSearchData;
SearchableInfo si = mSearchable;
String suggestionAction = mSuggestionAction;
Uri suggestionData = mSuggestionData;
String suggestionQuery = mSuggestionQuery;
dismiss();
sendLaunchIntent(suggestionAction, suggestionData,
suggestionQuery, appData,
keyCode, actionMsg, si);
return true;
}
}
}
}
}
return false;
}
/**
* Set or reset the user query to follow the selections in the suggestions
*
* @param jamQuery True means to set the query, false means to reset it to the user's choice
*/
private void jamSuggestionQuery(boolean jamQuery, AdapterView<?> parent, int position) {
// quick check against race conditions
if (mSearchable == null) {
return;
}
mSuggestionsAdapter.setNonUserQuery(true); // disables any suggestions processing
if (jamQuery) {
CursorAdapter ca = getSuggestionsAdapter(parent);
Cursor c = ca.getCursor();
if (c.moveToPosition(position)) {
setupSuggestionIntent(c, mSearchable);
String jamText = null;
// Simple heuristic for selecting text with which to rewrite the query.
if (mSuggestionQuery != null) {
jamText = mSuggestionQuery;
} else if (mSearchable.mQueryRewriteFromData && (mSuggestionData != null)) {
jamText = mSuggestionData.toString();
} else if (mSearchable.mQueryRewriteFromText) {
try {
int column = c.getColumnIndexOrThrow(SearchManager.SUGGEST_COLUMN_TEXT_1);
jamText = c.getString(column);
} catch (RuntimeException e) {
// no work here, jamText is null
}
}
if (jamText != null) {
mSearchTextField.setText(jamText);
/* mSearchTextField.selectAll(); */ // this didn't work anyway in the old UI
// TODO this is only needed in the model where we have a selection in the ACTV
// and in the dropdown at the same time.
mSearchTextField.setSelection(jamText.length());
}
}
} else {
// reset user query
mSearchTextField.setText(mUserQuery);
try {
mSearchTextField.setSelection(mUserQuerySelStart, mUserQuerySelEnd);
} catch (IndexOutOfBoundsException e) {
// In case of error, just select all
Log.e(LOG_TAG, "Caught IndexOutOfBoundsException while setting selection. " +
"start=" + mUserQuerySelStart + " end=" + mUserQuerySelEnd +
" text=\"" + mUserQuery + "\"");
mSearchTextField.selectAll();
}
}
// TODO because the new query is (not) processed in another thread, we can't just
// take away this flag (yet). The better solution here is going to require a new API
// in AutoCompleteTextView which allows us to change the text w/o changing the suggestions.
// mSuggestionsAdapter.setNonUserQuery(false);
}
/**
* Assemble a search intent and send it.
*
* @param action The intent to send, typically Intent.ACTION_SEARCH
* @param data The data for the intent
* @param query The user text entered (so far)
* @param appData The app data bundle (if supplied)
* @param actionKey If the intent was triggered by an action key, e.g. KEYCODE_CALL, it will
* be sent here. Pass KeyEvent.KEYCODE_UNKNOWN for no actionKey code.
* @param actionMsg If the intent was triggered by an action key, e.g. KEYCODE_CALL, the
* corresponding tag message will be sent here. Pass null for no actionKey message.
* @param si Reference to the current SearchableInfo. Passed here so it can be used even after
* we've called dismiss(), which attempts to null mSearchable.
*/
private void sendLaunchIntent(final String action, final Uri data, final String query,
final Bundle appData, int actionKey, final String actionMsg, final SearchableInfo si) {
Intent launcher = new Intent(action);
if (query != null) {
launcher.putExtra(SearchManager.QUERY, query);
}
if (data != null) {
launcher.setData(data);
}
if (appData != null) {
launcher.putExtra(SearchManager.APP_DATA, appData);
}
// add launch info (action key, etc.)
if (actionKey != KeyEvent.KEYCODE_UNKNOWN) {
launcher.putExtra(SearchManager.ACTION_KEY, actionKey);
launcher.putExtra(SearchManager.ACTION_MSG, actionMsg);
}
// attempt to enforce security requirement (no 3rd-party intents)
launcher.setComponent(si.mSearchActivity);
getContext().startActivity(launcher);
}
/**
* Shared code for launching a query from a suggestion.
* @param ca The cursor adapter containing the suggestions
* @param position The suggestion we'll be launching from
* @return true if a successful launch, false if could not (e.g. bad position)
*/
private boolean launchSuggestion(CursorAdapter ca, int position) {
Cursor c = ca.getCursor();
if ((c != null) && c.moveToPosition(position)) {
setupSuggestionIntent(c, mSearchable);
final Bundle appData = mAppSearchData;
SearchableInfo si = mSearchable;
String suggestionAction = mSuggestionAction;
Uri suggestionData = mSuggestionData;
String suggestionQuery = mSuggestionQuery;
dismiss();
sendLaunchIntent(suggestionAction, suggestionData, suggestionQuery, appData,
KeyEvent.KEYCODE_UNKNOWN, null, si);
return true;
}
return false;
}
/**
* When a particular suggestion has been selected, perform the various lookups required
* to use the suggestion. This includes checking the cursor for suggestion-specific data,
* and/or falling back to the XML for defaults; It also creates REST style Uri data when
* the suggestion includes a data id.
*
* NOTE: Return values are in member variables mSuggestionAction & mSuggestionData.
*
* @param c The suggestions cursor, moved to the row of the user's selection
* @param si The searchable activity's info record
*/
void setupSuggestionIntent(Cursor c, SearchableInfo si) {
try {
// use specific action if supplied, or default action if supplied, or fixed default
mSuggestionAction = null;
int mColumn = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_INTENT_ACTION);
if (mColumn >= 0) {
final String action = c.getString(mColumn);
if (action != null) {
mSuggestionAction = action;
}
}
if (mSuggestionAction == null) {
mSuggestionAction = si.getSuggestIntentAction();
}
if (mSuggestionAction == null) {
mSuggestionAction = Intent.ACTION_SEARCH;
}
// use specific data if supplied, or default data if supplied
String data = null;
mColumn = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_INTENT_DATA);
if (mColumn >= 0) {
final String rowData = c.getString(mColumn);
if (rowData != null) {
data = rowData;
}
}
if (data == null) {
data = si.getSuggestIntentData();
}
// then, if an ID was provided, append it.
if (data != null) {
mColumn = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID);
if (mColumn >= 0) {
final String id = c.getString(mColumn);
if (id != null) {
data = data + "/" + Uri.encode(id);
}
}
}
mSuggestionData = (data == null) ? null : Uri.parse(data);
mSuggestionQuery = null;
mColumn = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_QUERY);
if (mColumn >= 0) {
final String query = c.getString(mColumn);
if (query != null) {
mSuggestionQuery = query;
}
}
} catch (RuntimeException e ) {
int rowNum;
try { // be really paranoid now
rowNum = c.getPosition();
} catch (RuntimeException e2 ) {
rowNum = -1;
}
Log.w(LOG_TAG, "Search Suggestions cursor at row " + rowNum +
" returned exception" + e.toString());
}
}
/**
* For a given suggestion and a given cursor row, get the action message. If not provided
* by the specific row/column, also check for a single definition (for the action key).
*
* @param c The cursor providing suggestions
* @param actionKey The actionkey record being examined
*
* @return Returns a string, or null if no action key message for this suggestion
*/
private String getActionKeyMessage(Cursor c, final SearchableInfo.ActionKeyInfo actionKey) {
String result = null;
// check first in the cursor data, for a suggestion-specific message
final String column = actionKey.mSuggestActionMsgColumn;
if (column != null) {
try {
int colId = c.getColumnIndexOrThrow(column);
result = c.getString(colId);
} catch (RuntimeException e) {
// OK - result is already null
}
}
// If the cursor didn't give us a message, see if there's a single message defined
// for the actionkey (for all suggestions)
if (result == null) {
result = actionKey.mSuggestActionMsg;
}
return result;
}
/**
* Local subclass for AutoCompleteTextView
*
* This exists entirely to override the threshold method. Otherwise we just use the class
* as-is.
*/
public static class SearchAutoComplete extends AutoCompleteTextView {
public SearchAutoComplete(Context context) {
super(null);
}
public SearchAutoComplete(Context context, AttributeSet attrs) {
super(context, attrs);
}
public SearchAutoComplete(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
/**
* We never allow ACTV to automatically replace the text, since we use "jamSuggestionQuery"
* to do that. There's no point in letting ACTV do this here, because in the search UI,
* as soon as we click a suggestion, we're going to start shutting things down.
*/
@Override
public void replaceText(CharSequence text) {
}
/**
* We always return true, so that the effective threshold is "zero". This allows us
* to provide "null" suggestions such as "just show me some recent entries".
*/
@Override
public boolean enoughToFilter() {
return true;
}
}
/**
* Support for AutoCompleteTextView-based suggestions
*/
/**
* This class provides the filtering-based interface to suggestions providers.
* It is hardwired in a couple of places to support GoogleSearch - for example, it supports
* two-line suggestions, but it does not support icons.
*/
private static class SuggestionsAdapter extends SimpleCursorAdapter {
private final String TAG = "SuggestionsAdapter";
SearchableInfo mSearchable;
private Resources mProviderResources;
// These private variables are shared by the filter thread and must be protected
private WeakReference<Cursor> mRecentCursor = new WeakReference<Cursor>(null);
private boolean mNonUserQuery = false;
private AutoCompleteTextView mParentView;
public SuggestionsAdapter(Context context, SearchableInfo searchable,
AutoCompleteTextView actv) {
super(context, -1, null, null, null);
mSearchable = searchable;
mParentView = actv;
// set up provider resources (gives us icons, etc.)
Context activityContext = mSearchable.getActivityContext(mContext);
Context providerContext = mSearchable.getProviderContext(mContext, activityContext);
mProviderResources = providerContext.getResources();
}
/**
* Set this field (temporarily!) to disable suggestions updating. This allows us
* to change the string in the text view without changing the suggestions list.
*/
public void setNonUserQuery(boolean nonUserQuery) {
synchronized (this) {
mNonUserQuery = nonUserQuery;
}
}
public boolean getNonUserQuery() {
synchronized (this) {
return mNonUserQuery;
}
}
/**
* Use the search suggestions provider to obtain a live cursor. This will be called
* in a worker thread, so it's OK if the query is slow (e.g. round trip for suggestions).
* The results will be processed in the UI thread and changeCursor() will be called.
*
* In order to provide the Search Mgr functionality of seeing your query change as you
* scroll through the list, we have to be able to jam new text into the string without
* retriggering the suggestions. We do that here via the "nonUserQuery" flag. In that
* case we simply return the existing cursor.
*
* TODO: Dianne suggests that this should simply be promoted into an AutoCompleteTextView
* behavior (perhaps optionally).
*
* TODO: The "nonuserquery" logic has a race condition because it happens in another thread.
* This also needs to be fixed.
*/
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
String query = (constraint == null) ? "" : constraint.toString();
Cursor c = null;
synchronized (this) {
if (mNonUserQuery) {
c = mRecentCursor.get();
mNonUserQuery = false;
}
}
if (c == null) {
c = getSuggestions(mSearchable, query);
synchronized (this) {
mRecentCursor = new WeakReference<Cursor>(c);
}
}
return c;
}
/**
* Overriding changeCursor() allows us to change not only the cursor, but by sampling
* the cursor's columns, the actual display characteristics of the list.
*/
@Override
public void changeCursor(Cursor c) {
// first, check for various conditions that disqualify this cursor
if ((c == null) || (c.getCount() == 0)) {
// no cursor, or cursor with no data
changeCursorAndColumns(null, null, null);
if (c != null) {
c.close();
}
return;
}
// check cursor before trying to create list views from it
int colId = c.getColumnIndex("_id");
int col1 = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_1);
int col2 = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_2);
int colIc1 = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_ICON_1);
int colIc2 = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_ICON_2);
boolean minimal = (colId >= 0) && (col1 >= 0);
boolean hasIcons = (colIc1 >= 0) && (colIc2 >= 0);
boolean has2Lines = col2 >= 0;
if (minimal) {
int layout;
String[] from;
int[] to;
if (hasIcons) {
if (has2Lines) {
layout = com.android.internal.R.layout.search_dropdown_item_icons_2line;
from = TWO_LINE_ICONS_FROM;
to = TWO_LINE_ICONS_TO;
} else {
layout = com.android.internal.R.layout.search_dropdown_item_icons_1line;
from = ONE_LINE_ICONS_FROM;
to = ONE_LINE_ICONS_TO;
}
} else {
if (has2Lines) {
layout = com.android.internal.R.layout.search_dropdown_item_2line;
from = TWO_LINE_FROM;
to = TWO_LINE_TO;
} else {
layout = com.android.internal.R.layout.search_dropdown_item_1line;
from = ONE_LINE_FROM;
to = ONE_LINE_TO;
}
}
// Force the underlying ListView to discard and reload all layouts
// (Note, this should be optimized for cases where layout/cursor remain same)
mParentView.resetListAndClearViews();
// Now actually set up the cursor, columns, and the list view
changeCursorAndColumns(c, from, to);
setViewResource(layout);
} else {
// Provide some help for developers instead of just silently discarding
Log.w(LOG_TAG, "Suggestions cursor discarded due to missing required columns.");
changeCursorAndColumns(null, null, null);
c.close();
}
if ((colIc1 >= 0) != (colIc2 >= 0)) {
Log.w(LOG_TAG, "Suggestion icon column(s) discarded, must be 0 or 2 columns.");
}
}
/**
* Overriding this allows us to write the selected query back into the box.
* NOTE: This is a vastly simplified version of SearchDialog.jamQuery() and does
* not universally support the search API. But it is sufficient for Google Search.
*/
@Override
public CharSequence convertToString(Cursor cursor) {
CharSequence result = null;
if (cursor != null) {
int column = cursor.getColumnIndex(SearchManager.SUGGEST_COLUMN_QUERY);
if (column >= 0) {
final String query = cursor.getString(column);
if (query != null) {
result = query;
}
}
}
return result;
}
/**
* Get the query cursor for the search suggestions.
*
* TODO this is functionally identical to the version in SearchDialog.java. Perhaps it
* could be hoisted into SearchableInfo or some other shared spot.
*
* @param query The search text entered (so far)
* @return Returns a cursor with suggestions, or null if no suggestions
*/
private Cursor getSuggestions(final SearchableInfo searchable, final String query) {
Cursor cursor = null;
if (searchable.getSuggestAuthority() != null) {
try {
StringBuilder uriStr = new StringBuilder("content://");
uriStr.append(searchable.getSuggestAuthority());
// if content path provided, insert it now
final String contentPath = searchable.getSuggestPath();
if (contentPath != null) {
uriStr.append('/');
uriStr.append(contentPath);
}
// append standard suggestion query path
uriStr.append('/' + SearchManager.SUGGEST_URI_PATH_QUERY);
// inject query, either as selection args or inline
String[] selArgs = null;
if (searchable.getSuggestSelection() != null) { // use selection if provided
selArgs = new String[] {query};
} else {
uriStr.append('/'); // no sel, use REST pattern
uriStr.append(Uri.encode(query));
}
// finally, make the query
cursor = mContext.getContentResolver().query(
Uri.parse(uriStr.toString()), null,
searchable.getSuggestSelection(), selArgs,
null);
} catch (RuntimeException e) {
Log.w(TAG, "Search Suggestions query returned exception " + e.toString());
cursor = null;
}
}
return cursor;
}
/**
* Overriding this allows us to affect the way that an icon is loaded. Specifically,
* we can be more controlling about the resource path (and allow icons to come from other
* packages).
*
* TODO: This is 100% identical to the version in SearchDialog.java
*
* @param v ImageView to receive an image
* @param value the value retrieved from the cursor
*/
@Override
public void setViewImage(ImageView v, String value) {
int resID;
Drawable img = null;
try {
resID = Integer.parseInt(value);
if (resID != 0) {
img = mProviderResources.getDrawable(resID);
}
} catch (NumberFormatException nfe) {
// img = null;
} catch (NotFoundException e2) {
// img = null;
}
// finally, set the image to whatever we've gotten
v.setImageDrawable(img);
}
/**
* This method is overridden purely to provide a bit of protection against
* flaky content providers.
*
* TODO: This is 100% identical to the version in SearchDialog.java
*
* @see android.widget.ListAdapter#getView(int, View, ViewGroup)
*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
try {
return super.getView(position, convertView, parent);
} catch (RuntimeException e) {
Log.w(TAG, "Search Suggestions cursor returned exception " + e.toString());
// what can I return here?
View v = newView(mContext, mCursor, parent);
if (v != null) {
TextView tv = (TextView) v.findViewById(com.android.internal.R.id.text1);
tv.setText(e.toString());
}
return v;
}
}
}
/**
* Implements OnItemClickListener
*/
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Log.d(LOG_TAG, "onItemClick() position " + position);
launchSuggestion(mSuggestionsAdapter, position);
}
/**
* Implements OnItemSelectedListener
*/
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// Log.d(LOG_TAG, "onItemSelected() position " + position);
jamSuggestionQuery(true, parent, position);
}
/**
* Implements OnItemSelectedListener
*/
public void onNothingSelected(AdapterView<?> parent) {
// Log.d(LOG_TAG, "onNothingSelected()");
}
/**
* Debugging Support
*/
/**
* For debugging only, sample the millisecond clock and log it.
* Uses AtomicLong so we can use in multiple threads
*/
private AtomicLong mLastLogTime = new AtomicLong(SystemClock.uptimeMillis());
private void dbgLogTiming(final String caller) {
long millis = SystemClock.uptimeMillis();
long oldTime = mLastLogTime.getAndSet(millis);
long delta = millis - oldTime;
final String report = millis + " (+" + delta + ") ticks for Search keystroke in " + caller;
Log.d(LOG_TAG,report);
}
}
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