/*
* 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.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.res.Configuration;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.text.InputType;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import android.view.ActionMode;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.AutoCompleteTextView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.SearchView;
import android.widget.TextView;
/**
* Search dialog. This is controlled by the
* SearchManager and runs in the current foreground process.
*
* @hide
*/
public class SearchDialog extends Dialog {
// Debugging support
private static final boolean DBG = false;
private static final String LOG_TAG = "SearchDialog";
private static final String INSTANCE_KEY_COMPONENT = "comp";
private static final String INSTANCE_KEY_APPDATA = "data";
private static final String INSTANCE_KEY_USER_QUERY = "uQry";
// The string used for privateImeOptions to identify to the IME that it should not show
// a microphone button since one already exists in the search dialog.
private static final String IME_OPTION_NO_MICROPHONE = "nm";
private static final int SEARCH_PLATE_LEFT_PADDING_NON_GLOBAL = 7;
// views & widgets
private TextView mBadgeLabel;
private ImageView mAppIcon;
private AutoCompleteTextView mSearchAutoComplete;
private View mSearchPlate;
private SearchView mSearchView;
private Drawable mWorkingSpinner;
private View mCloseSearch;
// interaction with searchable application
private SearchableInfo mSearchable;
private ComponentName mLaunchComponent;
private Bundle mAppSearchData;
private Context mActivityContext;
// For voice searching
private final Intent mVoiceWebSearchIntent;
private final Intent mVoiceAppSearchIntent;
// The query entered by the user. This is not changed when selecting a suggestion
// that modifies the contents of the text field. But if the user then edits
// the suggestion, the resulting string is saved.
private String mUserQuery;
// Last known IME options value for the search edit text.
private int mSearchAutoCompleteImeOptions;
private BroadcastReceiver mConfChangeListener = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_CONFIGURATION_CHANGED)) {
onConfigurationChanged();
}
}
};
static int resolveDialogTheme(Context context) {
TypedValue outValue = new TypedValue();
context.getTheme().resolveAttribute(com.android.internal.R.attr.searchDialogTheme,
outValue, true);
return outValue.resourceId;
}
/**
* 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, SearchManager searchManager) {
super(context, resolveDialogTheme(context));
// Save voice intent for later queries/launching
mVoiceWebSearchIntent = new Intent(RecognizerIntent.ACTION_WEB_SEARCH);
mVoiceWebSearchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mVoiceWebSearchIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
mVoiceAppSearchIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
mVoiceAppSearchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
}
/**
* Create the search dialog and any resources that are used for the
* entire lifetime of the dialog.
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Window theWindow = getWindow();
WindowManager.LayoutParams lp = theWindow.getAttributes();
lp.width = ViewGroup.LayoutParams.MATCH_PARENT;
// taking up the whole window (even when transparent) is less than ideal,
// but necessary to show the popup window until the window manager supports
// having windows anchored by their parent but not clipped by them.
lp.height = ViewGroup.LayoutParams.MATCH_PARENT;
lp.gravity = Gravity.TOP | Gravity.FILL_HORIZONTAL;
lp.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
theWindow.setAttributes(lp);
// Touching outside of the search dialog will dismiss it
setCanceledOnTouchOutside(true);
}
/**
* We recreate the dialog view each time it becomes visible so as to limit
* the scope of any problems with the contained resources.
*/
private void createContentView() {
setContentView(com.android.internal.R.layout.search_bar);
// get the view elements for local access
SearchBar searchBar = (SearchBar) findViewById(com.android.internal.R.id.search_bar);
searchBar.setSearchDialog(this);
mSearchView = (SearchView) findViewById(com.android.internal.R.id.search_view);
mSearchView.setIconified(false);
mSearchView.setOnCloseListener(mOnCloseListener);
mSearchView.setOnQueryTextListener(mOnQueryChangeListener);
mSearchView.setOnSuggestionListener(mOnSuggestionSelectionListener);
mSearchView.onActionViewExpanded();
mCloseSearch = findViewById(com.android.internal.R.id.closeButton);
mCloseSearch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dismiss();
}
});
// TODO: Move the badge logic to SearchView or move the badge to search_bar.xml
mBadgeLabel = (TextView) mSearchView.findViewById(com.android.internal.R.id.search_badge);
mSearchAutoComplete = (AutoCompleteTextView)
mSearchView.findViewById(com.android.internal.R.id.search_src_text);
mAppIcon = (ImageView) findViewById(com.android.internal.R.id.search_app_icon);
mSearchPlate = mSearchView.findViewById(com.android.internal.R.id.search_plate);
mWorkingSpinner = getContext().getDrawable(com.android.internal.R.drawable.search_spinner);
// TODO: Restore the spinner for slow suggestion lookups
// mSearchAutoComplete.setCompoundDrawablesWithIntrinsicBounds(
// null, null, mWorkingSpinner, null);
setWorking(false);
// pre-hide all the extraneous elements
mBadgeLabel.setVisibility(View.GONE);
// Additional adjustments to make Dialog work for Search
mSearchAutoCompleteImeOptions = mSearchAutoComplete.getImeOptions();
}
/**
* Set up the search dialog
*
* @return true if search dialog launched, false if not
*/
public boolean show(String initialQuery, boolean selectInitialQuery,
ComponentName componentName, Bundle appSearchData) {
boolean success = doShow(initialQuery, selectInitialQuery, componentName, appSearchData);
if (success) {
// Display the drop down as soon as possible instead of waiting for the rest of the
// pending UI stuff to get done, so that things appear faster to the user.
mSearchAutoComplete.showDropDownAfterLayout();
}
return success;
}
/**
* Does the rest of the work required to show the search dialog. Called by
* {@link #show(String, boolean, ComponentName, Bundle)} and
*
* @return true if search dialog showed, false if not
*/
private boolean doShow(String initialQuery, boolean selectInitialQuery,
ComponentName componentName, Bundle appSearchData) {
// set up the searchable and show the dialog
if (!show(componentName, appSearchData)) {
return false;
}
// finally, load the user's initial text (which may trigger suggestions)
setUserQuery(initialQuery);
if (selectInitialQuery) {
mSearchAutoComplete.selectAll();
}
return true;
}
/**
* Sets up the search dialog and shows it.
*
* @return <code>true</code> if search dialog launched
*/
private boolean show(ComponentName componentName, Bundle appSearchData) {
if (DBG) {
Log.d(LOG_TAG, "show(" + componentName + ", "
+ appSearchData + ")");
}
SearchManager searchManager = (SearchManager)
mContext.getSystemService(Context.SEARCH_SERVICE);
// Try to get the searchable info for the provided component.
mSearchable = searchManager.getSearchableInfo(componentName);
if (mSearchable == null) {
return false;
}
mLaunchComponent = componentName;
mAppSearchData = appSearchData;
mActivityContext = mSearchable.getActivityContext(getContext());
// show the dialog. this will call onStart().
if (!isShowing()) {
// Recreate the search bar view every time the dialog is shown, to get rid
// of any bad state in the AutoCompleteTextView etc
createContentView();
mSearchView.setSearchableInfo(mSearchable);
mSearchView.setAppSearchData(mAppSearchData);
show();
}
updateUI();
return true;
}
@Override
public void onStart() {
super.onStart();
// Register a listener for configuration change events.
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
getContext().registerReceiver(mConfChangeListener, filter);
}
/**
* 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();
getContext().unregisterReceiver(mConfChangeListener);
// dump extra memory we're hanging on to
mLaunchComponent = null;
mAppSearchData = null;
mSearchable = null;
mUserQuery = null;
}
/**
* Sets the search dialog to the 'working' state, which shows a working spinner in the
* right hand size of the text field.
*
* @param working true to show spinner, false to hide spinner
*/
public void setWorking(boolean working) {
mWorkingSpinner.setAlpha(working ? 255 : 0);
mWorkingSpinner.setVisible(working, false);
mWorkingSpinner.invalidateSelf();
}
/**
* Save the minimal set of data necessary to recreate the search
*
* @return A bundle with the state of the dialog, or {@code null} if the search
* dialog is not showing.
*/
@Override
public Bundle onSaveInstanceState() {
if (!isShowing()) return null;
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.putString(INSTANCE_KEY_USER_QUERY, mUserQuery);
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) {
if (savedInstanceState == null) return;
ComponentName launchComponent = savedInstanceState.getParcelable(INSTANCE_KEY_COMPONENT);
Bundle appSearchData = savedInstanceState.getBundle(INSTANCE_KEY_APPDATA);
String userQuery = savedInstanceState.getString(INSTANCE_KEY_USER_QUERY);
// show the dialog.
if (!doShow(userQuery, false, launchComponent, appSearchData)) {
// for some reason, we couldn't re-instantiate
return;
}
}
/**
* Called after resources have changed, e.g. after screen rotation or locale change.
*/
public void onConfigurationChanged() {
if (mSearchable != null && isShowing()) {
// Redraw (resources may have changed)
updateSearchAppIcon();
updateSearchBadge();
if (isLandscapeMode(getContext())) {
mSearchAutoComplete.ensureImeVisible(true);
}
}
}
static boolean isLandscapeMode(Context context) {
return context.getResources().getConfiguration().orientation
== Configuration.ORIENTATION_LANDSCAPE;
}
/**
* Update the UI according to the info in the current value of {@link #mSearchable}.
*/
private void updateUI() {
if (mSearchable != null) {
mDecor.setVisibility(View.VISIBLE);
updateSearchAutoComplete();
updateSearchAppIcon();
updateSearchBadge();
// 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;
}
}
mSearchAutoComplete.setInputType(inputType);
mSearchAutoCompleteImeOptions = mSearchable.getImeOptions();
mSearchAutoComplete.setImeOptions(mSearchAutoCompleteImeOptions);
// If the search dialog is going to show a voice search button, then don't let
// the soft keyboard display a microphone button if it would have otherwise.
if (mSearchable.getVoiceSearchEnabled()) {
mSearchAutoComplete.setPrivateImeOptions(IME_OPTION_NO_MICROPHONE);
} else {
mSearchAutoComplete.setPrivateImeOptions(null);
}
}
}
/**
* Updates the auto-complete text view.
*/
private void updateSearchAutoComplete() {
// we dismiss the entire dialog instead
mSearchAutoComplete.setDropDownDismissedOnCompletion(false);
mSearchAutoComplete.setForceIgnoreOutsideTouch(false);
}
private void updateSearchAppIcon() {
PackageManager pm = getContext().getPackageManager();
Drawable icon;
try {
ActivityInfo info = pm.getActivityInfo(mLaunchComponent, 0);
icon = pm.getApplicationIcon(info.applicationInfo);
if (DBG)
Log.d(LOG_TAG, "Using app-specific icon");
} catch (NameNotFoundException e) {
icon = pm.getDefaultActivityIcon();
Log.w(LOG_TAG, mLaunchComponent + " not found, using generic app icon");
}
mAppIcon.setImageDrawable(icon);
mAppIcon.setVisibility(View.VISIBLE);
mSearchPlate.setPadding(SEARCH_PLATE_LEFT_PADDING_NON_GLOBAL, mSearchPlate.getPaddingTop(), mSearchPlate.getPaddingRight(), mSearchPlate.getPaddingBottom());
}
/**
* Setup the search "Badge" if requested by mode flags.
*/
private void updateSearchBadge() {
// assume both hidden
int visibility = View.GONE;
Drawable icon = null;
CharSequence text = null;
// optionally show one or the other.
if (mSearchable.useBadgeIcon()) {
icon = mActivityContext.getDrawable(mSearchable.getIconId());
visibility = View.VISIBLE;
if (DBG) Log.d(LOG_TAG, "Using badge icon: " + mSearchable.getIconId());
} else if (mSearchable.useBadgeLabel()) {
text = mActivityContext.getResources().getText(mSearchable.getLabelId()).toString();
visibility = View.VISIBLE;
if (DBG) Log.d(LOG_TAG, "Using badge label: " + mSearchable.getLabelId());
}
mBadgeLabel.setCompoundDrawablesWithIntrinsicBounds(icon, null, null, null);
mBadgeLabel.setText(text);
mBadgeLabel.setVisibility(visibility);
}
/*
* Listeners of various types
*/
/**
* {@link Dialog#onTouchEvent(MotionEvent)} will cancel the dialog only when the
* touch is outside the window. But the window includes space for the drop-down,
* so we also cancel on taps outside the search bar when the drop-down is not showing.
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
// cancel if the drop-down is not showing and the touch event was outside the search plate
if (!mSearchAutoComplete.isPopupShowing() && isOutOfBounds(mSearchPlate, event)) {
if (DBG) Log.d(LOG_TAG, "Pop-up not showing and outside of search plate.");
cancel();
return true;
}
// Let Dialog handle events outside the window while the pop-up is showing.
return super.onTouchEvent(event);
}
private boolean isOutOfBounds(View v, MotionEvent event) {
final int x = (int) event.getX();
final int y = (int) event.getY();
final int slop = ViewConfiguration.get(mContext).getScaledWindowTouchSlop();
return (x < -slop) || (y < -slop)
|| (x > (v.getWidth()+slop))
|| (y > (v.getHeight()+slop));
}
@Override
public void hide() {
if (!isShowing()) return;
// 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.hide();
}
/**
* Launch a search for the text in the query text field.
*/
public void launchQuerySearch() {
launchQuerySearch(KeyEvent.KEYCODE_UNKNOWN, null);
}
/**
* Launch a search for the text in the query text field.
*
* @param actionKey The key code of the action key that was pressed,
* or {@link KeyEvent#KEYCODE_UNKNOWN} if none.
* @param actionMsg The message for the action key that was pressed,
* or <code>null</code> if none.
*/
protected void launchQuerySearch(int actionKey, String actionMsg) {
String query = mSearchAutoComplete.getText().toString();
String action = Intent.ACTION_SEARCH;
Intent intent = createIntent(action, null, null, query, actionKey, actionMsg);
launchIntent(intent);
}
/**
* Launches an intent, including any special intent handling.
*/
private void launchIntent(Intent intent) {
if (intent == null) {
return;
}
Log.d(LOG_TAG, "launching " + intent);
try {
// If the intent was created from a suggestion, it will always have an explicit
// component here.
getContext().startActivity(intent);
// If the search switches to a different activity,
// SearchDialogWrapper#performActivityResuming
// will handle hiding the dialog when the next activity starts, but for
// real in-app search, we still need to dismiss the dialog.
dismiss();
} catch (RuntimeException ex) {
Log.e(LOG_TAG, "Failed launch activity: " + intent, ex);
}
}
/**
* Sets the list item selection in the AutoCompleteTextView's ListView.
*/
public void setListSelection(int index) {
mSearchAutoComplete.setListSelection(index);
}
/**
* Constructs an intent from the given information and the search dialog state.
*
* @param action Intent action.
* @param data Intent data, or <code>null</code>.
* @param extraData Data for {@link SearchManager#EXTRA_DATA_KEY} or <code>null</code>.
* @param query Intent query, or <code>null</code>.
* @param actionKey The key code of the action key that was pressed,
* or {@link KeyEvent#KEYCODE_UNKNOWN} if none.
* @param actionMsg The message for the action key that was pressed,
* or <code>null</code> if none.
* @param mode The search mode, one of the acceptable values for
* {@link SearchManager#SEARCH_MODE}, or {@code null}.
* @return The intent.
*/
private Intent createIntent(String action, Uri data, String extraData, String query,
int actionKey, String actionMsg) {
// Now build the Intent
Intent intent = new Intent(action);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// We need CLEAR_TOP to avoid reusing an old task that has other activities
// on top of the one we want. We don't want to do this in in-app search though,
// as it can be destructive to the activity stack.
if (data != null) {
intent.setData(data);
}
intent.putExtra(SearchManager.USER_QUERY, mUserQuery);
if (query != null) {
intent.putExtra(SearchManager.QUERY, query);
}
if (extraData != null) {
intent.putExtra(SearchManager.EXTRA_DATA_KEY, extraData);
}
if (mAppSearchData != null) {
intent.putExtra(SearchManager.APP_DATA, mAppSearchData);
}
if (actionKey != KeyEvent.KEYCODE_UNKNOWN) {
intent.putExtra(SearchManager.ACTION_KEY, actionKey);
intent.putExtra(SearchManager.ACTION_MSG, actionMsg);
}
intent.setComponent(mSearchable.getSearchActivity());
return intent;
}
/**
* The root element in the search bar layout. This is a custom view just to override
* the handling of the back button.
*/
public static class SearchBar extends LinearLayout {
private SearchDialog mSearchDialog;
public SearchBar(Context context, AttributeSet attrs) {
super(context, attrs);
}
public SearchBar(Context context) {
super(context);
}
public void setSearchDialog(SearchDialog searchDialog) {
mSearchDialog = searchDialog;
}
/**
* Don't allow action modes in a SearchBar, it looks silly.
*/
@Override
public ActionMode startActionModeForChild(View child, ActionMode.Callback callback) {
return null;
}
}
private boolean isEmpty(AutoCompleteTextView actv) {
return TextUtils.getTrimmedLength(actv.getText()) == 0;
}
@Override
public void onBackPressed() {
// If the input method is covering the search dialog completely,
// e.g. in landscape mode with no hard keyboard, dismiss just the input method
InputMethodManager imm = (InputMethodManager)getContext()
.getSystemService(Context.INPUT_METHOD_SERVICE);
if (imm != null && imm.isFullscreenMode() &&
imm.hideSoftInputFromWindow(getWindow().getDecorView().getWindowToken(), 0)) {
return;
}
// Close search dialog
cancel();
}
private boolean onClosePressed() {
// Dismiss the dialog if close button is pressed when there's no query text
if (isEmpty(mSearchAutoComplete)) {
dismiss();
return true;
}
return false;
}
private final SearchView.OnCloseListener mOnCloseListener = new SearchView.OnCloseListener() {
public boolean onClose() {
return onClosePressed();
}
};
private final SearchView.OnQueryTextListener mOnQueryChangeListener =
new SearchView.OnQueryTextListener() {
public boolean onQueryTextSubmit(String query) {
dismiss();
return false;
}
public boolean onQueryTextChange(String newText) {
return false;
}
};
private final SearchView.OnSuggestionListener mOnSuggestionSelectionListener =
new SearchView.OnSuggestionListener() {
public boolean onSuggestionSelect(int position) {
return false;
}
public boolean onSuggestionClick(int position) {
dismiss();
return false;
}
};
/**
* Sets the text in the query box, updating the suggestions.
*/
private void setUserQuery(String query) {
if (query == null) {
query = "";
}
mUserQuery = query;
mSearchAutoComplete.setText(query);
mSearchAutoComplete.setSelection(query.length());
}
}
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