| /* |
| * Copyright (C) 2010 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.widget; |
| |
| import static android.widget.SuggestionsAdapter.getColumnString; |
| |
| import com.android.internal.R; |
| |
| import android.app.PendingIntent; |
| import android.app.SearchManager; |
| import android.app.SearchableInfo; |
| import android.content.ActivityNotFoundException; |
| 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.res.Resources; |
| import android.content.res.TypedArray; |
| import android.database.Cursor; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.speech.RecognizerIntent; |
| import android.text.Editable; |
| import android.text.TextUtils; |
| import android.text.TextWatcher; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.KeyEvent; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.inputmethod.InputMethodManager; |
| import android.widget.AdapterView.OnItemClickListener; |
| import android.widget.AdapterView.OnItemSelectedListener; |
| import android.widget.TextView.OnEditorActionListener; |
| |
| import java.util.WeakHashMap; |
| |
| /** |
| * Provides the user interface elements for the user to enter a search query and submit a |
| * request to a search provider. Shows a list of query suggestions or results, if |
| * available and allows the user to pick a suggestion or result to launch into. |
| * |
| * <p> |
| * <b>XML attributes</b> |
| * <p> |
| * See {@link android.R.styleable#SearchView SearchView Attributes}, |
| * {@link android.R.styleable#View View Attributes} |
| * |
| * @attr ref android.R.styleable#SearchView_iconifiedByDefault |
| * @attr ref android.R.styleable#SearchView_maxWidth |
| */ |
| public class SearchView extends LinearLayout { |
| |
| private static final boolean DBG = false; |
| private static final String LOG_TAG = "SearchView"; |
| |
| private OnQueryChangeListener mOnQueryChangeListener; |
| private OnCloseListener mOnCloseListener; |
| private OnFocusChangeListener mOnQueryTextFocusChangeListener; |
| private OnSuggestionSelectionListener mOnSuggestionListener; |
| |
| private boolean mIconifiedByDefault; |
| private boolean mIconified; |
| private CursorAdapter mSuggestionsAdapter; |
| private View mSearchButton; |
| private View mSubmitButton; |
| private View mCloseButton; |
| private View mSearchEditFrame; |
| private View mVoiceButton; |
| private AutoCompleteTextView mQueryTextView; |
| private boolean mSubmitButtonEnabled; |
| private CharSequence mQueryHint; |
| private boolean mQueryRefinement; |
| private boolean mClearingFocus; |
| private int mMaxWidth; |
| |
| private SearchableInfo mSearchable; |
| |
| // For voice searching |
| private final Intent mVoiceWebSearchIntent; |
| private final Intent mVoiceAppSearchIntent; |
| |
| // A weak map of drawables we've gotten from other packages, so we don't load them |
| // more than once. |
| private final WeakHashMap<String, Drawable.ConstantState> mOutsideDrawablesCache = |
| new WeakHashMap<String, Drawable.ConstantState>(); |
| |
| /** |
| * Callbacks for changes to the query text. |
| */ |
| public interface OnQueryChangeListener { |
| |
| /** |
| * Called when the user submits the query. This could be due to a key press on the |
| * keyboard or due to pressing a submit button. |
| * The listener can override the standard behavior by returning true |
| * to indicate that it has handled the submit request. Otherwise return false to |
| * let the SearchView handle the submission by launching any associated intent. |
| * |
| * @param query the query text that is to be submitted |
| * |
| * @return true if the query has been handled by the listener, false to let the |
| * SearchView perform the default action. |
| */ |
| boolean onSubmitQuery(String query); |
| |
| /** |
| * Called when the query text is changed by the user. |
| * |
| * @param newText the new content of the query text field. |
| * |
| * @return false if the SearchView should perform the default action of showing any |
| * suggestions if available, true if the action was handled by the listener. |
| */ |
| boolean onQueryTextChanged(String newText); |
| } |
| |
| public interface OnCloseListener { |
| |
| /** |
| * The user is attempting to close the SearchView. |
| * |
| * @return true if the listener wants to override the default behavior of clearing the |
| * text field and dismissing it, false otherwise. |
| */ |
| boolean onClose(); |
| } |
| |
| /** |
| * Callback interface for selection events on suggestions. These callbacks |
| * are only relevant when a SearchableInfo has been specified by {@link #setSearchableInfo}. |
| */ |
| public interface OnSuggestionSelectionListener { |
| |
| /** |
| * Called when a suggestion was selected by navigating to it. |
| * @param position the absolute position in the list of suggestions. |
| * |
| * @return true if the listener handles the event and wants to override the default |
| * behavior of possibly rewriting the query based on the selected item, false otherwise. |
| */ |
| boolean onSuggestionSelected(int position); |
| |
| /** |
| * Called when a suggestion was clicked. |
| * @param position the absolute position of the clicked item in the list of suggestions. |
| * |
| * @return true if the listener handles the event and wants to override the default |
| * behavior of launching any intent or submitting a search query specified on that item. |
| * Return false otherwise. |
| */ |
| boolean onSuggestionClicked(int position); |
| } |
| |
| public SearchView(Context context) { |
| this(context, null); |
| } |
| |
| public SearchView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| |
| LayoutInflater inflater = (LayoutInflater) context |
| .getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| inflater.inflate(R.layout.search_view, this, true); |
| |
| mSearchButton = findViewById(R.id.search_button); |
| mQueryTextView = (AutoCompleteTextView) findViewById(R.id.search_src_text); |
| mSearchEditFrame = findViewById(R.id.search_edit_frame); |
| mSubmitButton = findViewById(R.id.search_go_btn); |
| mCloseButton = findViewById(R.id.search_close_btn); |
| mVoiceButton = findViewById(R.id.search_voice_btn); |
| |
| mSearchButton.setOnClickListener(mOnClickListener); |
| mCloseButton.setOnClickListener(mOnClickListener); |
| mSubmitButton.setOnClickListener(mOnClickListener); |
| mVoiceButton.setOnClickListener(mOnClickListener); |
| |
| mQueryTextView.addTextChangedListener(mTextWatcher); |
| mQueryTextView.setOnEditorActionListener(mOnEditorActionListener); |
| mQueryTextView.setOnItemClickListener(mOnItemClickListener); |
| mQueryTextView.setOnItemSelectedListener(mOnItemSelectedListener); |
| // Inform any listener of focus changes |
| mQueryTextView.setOnFocusChangeListener(new OnFocusChangeListener() { |
| |
| public void onFocusChange(View v, boolean hasFocus) { |
| if (mOnQueryTextFocusChangeListener != null) { |
| mOnQueryTextFocusChangeListener.onFocusChange(SearchView.this, hasFocus); |
| } |
| } |
| }); |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SearchView, 0, 0); |
| setIconifiedByDefault(a.getBoolean(R.styleable.SearchView_iconifiedByDefault, true)); |
| int maxWidth = a.getDimensionPixelSize(R.styleable.SearchView_maxWidth, -1); |
| if (maxWidth != -1) { |
| setMaxWidth(maxWidth); |
| } |
| a.recycle(); |
| |
| // 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); |
| |
| updateViewsVisibility(mIconifiedByDefault); |
| } |
| |
| /** |
| * Sets the SearchableInfo for this SearchView. Properties in the SearchableInfo are used |
| * to display labels, hints, suggestions, create intents for launching search results screens |
| * and controlling other affordances such as a voice button. |
| * |
| * @param searchable a SearchableInfo can be retrieved from the SearchManager, for a specific |
| * activity or a global search provider. |
| */ |
| public void setSearchableInfo(SearchableInfo searchable) { |
| mSearchable = searchable; |
| if (mSearchable != null) { |
| updateSearchAutoComplete(); |
| } |
| updateViewsVisibility(mIconifiedByDefault); |
| } |
| |
| /** @hide */ |
| @Override |
| public boolean requestFocus(int direction, Rect previouslyFocusedRect) { |
| if (mClearingFocus || isIconified()) return false; |
| return mQueryTextView.requestFocus(direction, previouslyFocusedRect); |
| } |
| |
| /** @hide */ |
| @Override |
| public void clearFocus() { |
| mClearingFocus = true; |
| super.clearFocus(); |
| mQueryTextView.clearFocus(); |
| setImeVisibility(false); |
| mClearingFocus = false; |
| } |
| |
| /** |
| * Sets a listener for user actions within the SearchView. |
| * |
| * @param listener the listener object that receives callbacks when the user performs |
| * actions in the SearchView such as clicking on buttons or typing a query. |
| */ |
| public void setOnQueryChangeListener(OnQueryChangeListener listener) { |
| mOnQueryChangeListener = listener; |
| } |
| |
| /** |
| * Sets a listener to inform when the user closes the SearchView. |
| * |
| * @param listener the listener to call when the user closes the SearchView. |
| */ |
| public void setOnCloseListener(OnCloseListener listener) { |
| mOnCloseListener = listener; |
| } |
| |
| /** |
| * Sets a listener to inform when the focus of the query text field changes. |
| * |
| * @param listener the listener to inform of focus changes. |
| */ |
| public void setOnQueryTextFocusChangeListener(OnFocusChangeListener listener) { |
| mOnQueryTextFocusChangeListener = listener; |
| } |
| |
| /** |
| * Sets a listener to inform when a suggestion is focused or clicked. |
| * |
| * @param listener the listener to inform of suggestion selection events. |
| */ |
| public void setOnSuggestionSelectionListener(OnSuggestionSelectionListener listener) { |
| mOnSuggestionListener = listener; |
| } |
| |
| /** |
| * Sets a query string in the text field and optionally submits the query as well. |
| * |
| * @param query the query string. This replaces any query text already present in the |
| * text field. |
| * @param submit whether to submit the query right now or only update the contents of |
| * text field. |
| */ |
| public void setQuery(CharSequence query, boolean submit) { |
| mQueryTextView.setText(query); |
| if (query != null) { |
| mQueryTextView.setSelection(query.length()); |
| } |
| |
| // If the query is not empty and submit is requested, submit the query |
| if (submit && !TextUtils.isEmpty(query)) { |
| onSubmitQuery(); |
| } |
| } |
| |
| /** |
| * Sets the hint text to display in the query text field. This overrides any hint specified |
| * in the SearchableInfo. |
| * |
| * @param hint the hint text to display |
| */ |
| public void setQueryHint(CharSequence hint) { |
| mQueryHint = hint; |
| updateQueryHint(); |
| } |
| |
| /** |
| * Sets the default or resting state of the search field. If true, a single search icon is |
| * shown by default and expands to show the text field and other buttons when pressed. Also, |
| * if the default state is iconified, then it collapses to that state when the close button |
| * is pressed. Changes to this property will take effect immediately. |
| * |
| * <p>The default value is false.</p> |
| * |
| * @param iconified whether the search field should be iconified by default |
| */ |
| public void setIconifiedByDefault(boolean iconified) { |
| if (mIconifiedByDefault == iconified) return; |
| mIconifiedByDefault = iconified; |
| updateViewsVisibility(iconified); |
| setImeVisibility(!iconified); |
| } |
| |
| /** |
| * Returns the default iconified state of the search field. |
| * @return |
| */ |
| public boolean isIconfiedByDefault() { |
| return mIconifiedByDefault; |
| } |
| |
| /** |
| * Iconifies or expands the SearchView. Any query text is cleared when iconified. This is |
| * a temporary state and does not override the default iconified state set by |
| * {@link #setIconifiedByDefault(boolean)}. If the default state is iconified, then |
| * a false here will only be valid until the user closes the field. And if the default |
| * state is expanded, then a true here will only clear the text field and not close it. |
| * |
| * @param iconify a true value will collapse the SearchView to an icon, while a false will |
| * expand it. |
| */ |
| public void setIconified(boolean iconify) { |
| if (iconify) { |
| onCloseClicked(); |
| } else { |
| onSearchClicked(); |
| } |
| } |
| |
| /** |
| * Returns the current iconified state of the SearchView. |
| * |
| * @return true if the SearchView is currently iconified, false if the search field is |
| * fully visible. |
| */ |
| public boolean isIconified() { |
| return mIconified; |
| } |
| |
| /** |
| * Enables showing a submit button when the query is non-empty. In cases where the SearchView |
| * is being used to filter the contents of the current activity and doesn't launch a separate |
| * results activity, then the submit button should be disabled. |
| * |
| * @param enabled true to show a submit button for submitting queries, false if a submit |
| * button is not required. |
| */ |
| public void setSubmitButtonEnabled(boolean enabled) { |
| mSubmitButtonEnabled = enabled; |
| updateViewsVisibility(isIconified()); |
| } |
| |
| /** |
| * Returns whether the submit button is enabled when necessary or never displayed. |
| * |
| * @return whether the submit button is enabled automatically when necessary |
| */ |
| public boolean isSubmitButtonEnabled() { |
| return mSubmitButtonEnabled; |
| } |
| |
| /** |
| * Specifies if a query refinement button should be displayed alongside each suggestion |
| * or if it should depend on the flags set in the individual items retrieved from the |
| * suggestions provider. Clicking on the query refinement button will replace the text |
| * in the query text field with the text from the suggestion. This flag only takes effect |
| * if a SearchableInfo has been specified with {@link #setSearchableInfo(SearchableInfo)} |
| * and not when using a custom adapter. |
| * |
| * @param enable true if all items should have a query refinement button, false if only |
| * those items that have a query refinement flag set should have the button. |
| * |
| * @see SearchManager#SUGGEST_COLUMN_FLAGS |
| * @see SearchManager#FLAG_QUERY_REFINEMENT |
| */ |
| public void setQueryRefinementEnabled(boolean enable) { |
| mQueryRefinement = enable; |
| if (mSuggestionsAdapter instanceof SuggestionsAdapter) { |
| ((SuggestionsAdapter) mSuggestionsAdapter).setQueryRefinement( |
| enable ? SuggestionsAdapter.REFINE_ALL : SuggestionsAdapter.REFINE_BY_ENTRY); |
| } |
| } |
| |
| /** |
| * Returns whether query refinement is enabled for all items or only specific ones. |
| * @return true if enabled for all items, false otherwise. |
| */ |
| public boolean isQueryRefinementEnabled() { |
| return mQueryRefinement; |
| } |
| |
| /** |
| * You can set a custom adapter if you wish. Otherwise the default adapter is used to |
| * display the suggestions from the suggestions provider associated with the SearchableInfo. |
| * |
| * @see #setSearchableInfo(SearchableInfo) |
| */ |
| public void setSuggestionsAdapter(CursorAdapter adapter) { |
| mSuggestionsAdapter = adapter; |
| |
| mQueryTextView.setAdapter(mSuggestionsAdapter); |
| } |
| |
| /** |
| * Returns the adapter used for suggestions, if any. |
| * @return the suggestions adapter |
| */ |
| public CursorAdapter getSuggestionsAdapter() { |
| return mSuggestionsAdapter; |
| } |
| |
| /** |
| * Makes the view at most this many pixels wide |
| * |
| * @attr ref android.R.styleable#SearchView_maxWidth |
| */ |
| public void setMaxWidth(int maxpixels) { |
| mMaxWidth = maxpixels; |
| |
| requestLayout(); |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| int widthMode = MeasureSpec.getMode(widthMeasureSpec); |
| int width = MeasureSpec.getSize(widthMeasureSpec); |
| |
| if ((widthMode == MeasureSpec.AT_MOST || widthMode == MeasureSpec.EXACTLY) && mMaxWidth > 0 |
| && width > mMaxWidth) { |
| super.onMeasure(MeasureSpec.makeMeasureSpec(mMaxWidth, widthMode), heightMeasureSpec); |
| } else { |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| } |
| } |
| |
| private void updateViewsVisibility(final boolean collapsed) { |
| mIconified = collapsed; |
| // Visibility of views that are visible when collapsed |
| final int visCollapsed = collapsed ? VISIBLE : GONE; |
| // Visibility of views that are visible when expanded |
| final int visExpanded = collapsed ? GONE : VISIBLE; |
| // Is there text in the query |
| final boolean hasText = !TextUtils.isEmpty(mQueryTextView.getText()); |
| |
| mSearchButton.setVisibility(visCollapsed); |
| mSubmitButton.setVisibility(mSubmitButtonEnabled && hasText ? visExpanded : GONE); |
| mSearchEditFrame.setVisibility(visExpanded); |
| updateVoiceButton(!hasText); |
| requestLayout(); |
| invalidate(); |
| } |
| |
| private void setImeVisibility(boolean visible) { |
| InputMethodManager imm = (InputMethodManager) |
| getContext().getSystemService(Context.INPUT_METHOD_SERVICE); |
| |
| // We made sure the IME was displayed, so also make sure it is closed |
| // when we go away. |
| if (imm != null) { |
| if (visible) { |
| imm.showSoftInputUnchecked(0, null); |
| } else { |
| imm.hideSoftInputFromWindow(getWindowToken(), 0); |
| } |
| } |
| } |
| |
| /** |
| * Called by the SuggestionsAdapter |
| * @hide |
| */ |
| /* package */void onQueryRefine(CharSequence queryText) { |
| setQuery(queryText); |
| } |
| |
| private final OnClickListener mOnClickListener = new OnClickListener() { |
| |
| public void onClick(View v) { |
| if (v == mSearchButton) { |
| onSearchClicked(); |
| } else if (v == mCloseButton) { |
| onCloseClicked(); |
| } else if (v == mSubmitButton) { |
| onSubmitQuery(); |
| } else if (v == mVoiceButton) { |
| onVoiceClicked(); |
| } |
| } |
| }; |
| |
| /** |
| * Handles the key down event for dealing with action keys. |
| * |
| * @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 true if the event was handled here, or false if not. |
| */ |
| @Override |
| public boolean onKeyDown(int keyCode, KeyEvent event) { |
| if (mSearchable == null) { |
| return false; |
| } |
| |
| // if it's an action specified by the searchable activity, launch the |
| // entered query with the action key |
| SearchableInfo.ActionKeyInfo actionKey = mSearchable.findActionKey(keyCode); |
| if ((actionKey != null) && (actionKey.getQueryActionMsg() != null)) { |
| launchQuerySearch(keyCode, actionKey.getQueryActionMsg(), mQueryTextView.getText() |
| .toString()); |
| return true; |
| } |
| |
| return super.onKeyDown(keyCode, event); |
| } |
| |
| private void updateQueryHint() { |
| if (mQueryHint != null) { |
| mQueryTextView.setHint(mQueryHint); |
| } else if (mSearchable != null) { |
| CharSequence hint = null; |
| int hintId = mSearchable.getHintId(); |
| if (hintId != 0) { |
| hint = getContext().getString(hintId); |
| } |
| if (hint != null) { |
| mQueryTextView.setHint(hint); |
| } |
| } |
| } |
| |
| /** |
| * Updates the auto-complete text view. |
| */ |
| private void updateSearchAutoComplete() { |
| // close any existing suggestions adapter |
| //closeSuggestionsAdapter(); |
| |
| mQueryTextView.setDropDownAnimationStyle(0); // no animation |
| mQueryTextView.setThreshold(mSearchable.getSuggestThreshold()); |
| |
| // 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 = new SuggestionsAdapter(getContext(), |
| this, mSearchable, mOutsideDrawablesCache); |
| mQueryTextView.setAdapter(mSuggestionsAdapter); |
| ((SuggestionsAdapter) mSuggestionsAdapter).setQueryRefinement( |
| mQueryRefinement ? SuggestionsAdapter.REFINE_ALL |
| : SuggestionsAdapter.REFINE_BY_ENTRY); |
| } |
| } |
| |
| /** |
| * Update the visibility of the voice button. There are actually two voice search modes, |
| * either of which will activate the button. |
| * @param empty whether the search query text field is empty. If it is, then the other |
| * criteria apply to make the voice button visible. Otherwise the voice button will not |
| * be visible - i.e., if the user has typed a query, remove the voice button. |
| */ |
| private void updateVoiceButton(boolean empty) { |
| int visibility = View.GONE; |
| if (mSearchable != null && mSearchable.getVoiceSearchEnabled() && empty |
| && !isIconified()) { |
| 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); |
| } |
| |
| private final OnEditorActionListener mOnEditorActionListener = new OnEditorActionListener() { |
| |
| /** |
| * Called when the input method default action key is pressed. |
| */ |
| public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { |
| onSubmitQuery(); |
| return true; |
| } |
| }; |
| |
| private void onTextChanged(CharSequence newText) { |
| CharSequence text = mQueryTextView.getText(); |
| boolean hasText = !TextUtils.isEmpty(text); |
| if (isSubmitButtonEnabled()) { |
| mSubmitButton.setVisibility(hasText ? VISIBLE : GONE); |
| requestLayout(); |
| invalidate(); |
| } |
| updateVoiceButton(!hasText); |
| if (mOnQueryChangeListener != null) { |
| mOnQueryChangeListener.onQueryTextChanged(newText.toString()); |
| } |
| } |
| |
| private void onSubmitQuery() { |
| CharSequence query = mQueryTextView.getText(); |
| if (!TextUtils.isEmpty(query)) { |
| if (mOnQueryChangeListener == null |
| || !mOnQueryChangeListener.onSubmitQuery(query.toString())) { |
| if (mSearchable != null) { |
| launchQuerySearch(KeyEvent.KEYCODE_UNKNOWN, null, query.toString()); |
| setImeVisibility(false); |
| } |
| dismissSuggestions(); |
| } |
| } |
| } |
| |
| private void dismissSuggestions() { |
| mQueryTextView.dismissDropDown(); |
| } |
| |
| private void onCloseClicked() { |
| if (mOnCloseListener == null || !mOnCloseListener.onClose()) { |
| CharSequence text = mQueryTextView.getText(); |
| if (TextUtils.isEmpty(text)) { |
| // query field already empty, hide the keyboard and remove focus |
| clearFocus(); |
| setImeVisibility(false); |
| } else { |
| mQueryTextView.setText(""); |
| } |
| updateViewsVisibility(mIconifiedByDefault); |
| if (mIconifiedByDefault) setImeVisibility(false); |
| } |
| } |
| |
| private void onSearchClicked() { |
| mQueryTextView.requestFocus(); |
| updateViewsVisibility(false); |
| setImeVisibility(true); |
| } |
| |
| private void onVoiceClicked() { |
| // guard against possible race conditions |
| if (mSearchable == null) { |
| return; |
| } |
| SearchableInfo searchable = mSearchable; |
| try { |
| if (searchable.getVoiceSearchLaunchWebSearch()) { |
| Intent webSearchIntent = createVoiceWebSearchIntent(mVoiceWebSearchIntent, |
| searchable); |
| getContext().startActivity(webSearchIntent); |
| } else if (searchable.getVoiceSearchLaunchRecognizer()) { |
| Intent appSearchIntent = createVoiceAppSearchIntent(mVoiceAppSearchIntent, |
| searchable); |
| getContext().startActivity(appSearchIntent); |
| } |
| } 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"); |
| } |
| } |
| |
| private final OnItemClickListener mOnItemClickListener = new OnItemClickListener() { |
| |
| /** |
| * Implements OnItemClickListener |
| */ |
| public void onItemClick(AdapterView<?> parent, View view, int position, long id) { |
| if (DBG) |
| Log.d(LOG_TAG, "onItemClick() position " + position); |
| if (mOnSuggestionListener == null |
| || !mOnSuggestionListener.onSuggestionClicked(position)) { |
| launchSuggestion(position, KeyEvent.KEYCODE_UNKNOWN, null); |
| setImeVisibility(false); |
| dismissSuggestions(); |
| } |
| } |
| }; |
| |
| private final OnItemSelectedListener mOnItemSelectedListener = new OnItemSelectedListener() { |
| |
| /** |
| * Implements OnItemSelectedListener |
| */ |
| public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { |
| if (DBG) |
| Log.d(LOG_TAG, "onItemSelected() position " + position); |
| // A suggestion has been selected, rewrite the query if possible, |
| // otherwise the restore the original query. |
| if (mOnSuggestionListener == null |
| || !mOnSuggestionListener.onSuggestionSelected(position)) { |
| rewriteQueryFromSuggestion(position); |
| } |
| } |
| |
| /** |
| * Implements OnItemSelectedListener |
| */ |
| public void onNothingSelected(AdapterView<?> parent) { |
| if (DBG) |
| Log.d(LOG_TAG, "onNothingSelected()"); |
| } |
| }; |
| |
| /** |
| * Query rewriting. |
| */ |
| private void rewriteQueryFromSuggestion(int position) { |
| CharSequence oldQuery = mQueryTextView.getText(); |
| Cursor c = mSuggestionsAdapter.getCursor(); |
| if (c == null) { |
| return; |
| } |
| if (c.moveToPosition(position)) { |
| // Get the new query from the suggestion. |
| CharSequence newQuery = mSuggestionsAdapter.convertToString(c); |
| if (newQuery != null) { |
| // The suggestion rewrites the query. |
| // Update the text field, without getting new suggestions. |
| setQuery(newQuery); |
| } else { |
| // The suggestion does not rewrite the query, restore the user's query. |
| setQuery(oldQuery); |
| } |
| } else { |
| // We got a bad position, restore the user's query. |
| setQuery(oldQuery); |
| } |
| } |
| |
| /** |
| * Launches an intent based on a suggestion. |
| * |
| * @param position The index of the suggestion to create the intent from. |
| * @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. |
| * @return true if a successful launch, false if could not (e.g. bad position). |
| */ |
| private boolean launchSuggestion(int position, int actionKey, String actionMsg) { |
| Cursor c = mSuggestionsAdapter.getCursor(); |
| if ((c != null) && c.moveToPosition(position)) { |
| |
| Intent intent = createIntentFromSuggestion(c, actionKey, actionMsg); |
| |
| // launch the intent |
| launchIntent(intent); |
| |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Launches an intent, including any special intent handling. |
| */ |
| private void launchIntent(Intent intent) { |
| if (intent == null) { |
| return; |
| } |
| try { |
| // If the intent was created from a suggestion, it will always have an explicit |
| // component here. |
| getContext().startActivity(intent); |
| } catch (RuntimeException ex) { |
| Log.e(LOG_TAG, "Failed launch activity: " + intent, ex); |
| } |
| } |
| |
| /** |
| * Sets the text in the query box, without updating the suggestions. |
| */ |
| private void setQuery(CharSequence query) { |
| mQueryTextView.setText(query, true); |
| // Move the cursor to the end |
| mQueryTextView.setSelection(TextUtils.isEmpty(query) ? 0 : query.length()); |
| } |
| |
| private void launchQuerySearch(int actionKey, String actionMsg, String query) { |
| String action = Intent.ACTION_SEARCH; |
| Intent intent = createIntent(action, null, null, query, actionKey, actionMsg); |
| getContext().startActivity(intent); |
| } |
| |
| /** |
| * 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, query); |
| if (query != null) { |
| intent.putExtra(SearchManager.QUERY, query); |
| } |
| if (extraData != null) { |
| intent.putExtra(SearchManager.EXTRA_DATA_KEY, extraData); |
| } |
| if (actionKey != KeyEvent.KEYCODE_UNKNOWN) { |
| intent.putExtra(SearchManager.ACTION_KEY, actionKey); |
| intent.putExtra(SearchManager.ACTION_MSG, actionMsg); |
| } |
| intent.setComponent(mSearchable.getSearchActivity()); |
| return intent; |
| } |
| |
| /** |
| * Create and return an Intent that can launch the voice search activity for web search. |
| */ |
| private Intent createVoiceWebSearchIntent(Intent baseIntent, SearchableInfo searchable) { |
| Intent voiceIntent = new Intent(baseIntent); |
| ComponentName searchActivity = searchable.getSearchActivity(); |
| voiceIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, searchActivity == null ? null |
| : searchActivity.flattenToShortString()); |
| return voiceIntent; |
| } |
| |
| /** |
| * 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, SearchableInfo searchable) { |
| ComponentName searchActivity = searchable.getSearchActivity(); |
| |
| // 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(searchActivity); |
| 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(); |
| |
| // 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 = getResources(); |
| if (searchable.getVoiceLanguageModeId() != 0) { |
| languageModel = resources.getString(searchable.getVoiceLanguageModeId()); |
| } |
| if (searchable.getVoicePromptTextId() != 0) { |
| prompt = resources.getString(searchable.getVoicePromptTextId()); |
| } |
| if (searchable.getVoiceLanguageId() != 0) { |
| language = resources.getString(searchable.getVoiceLanguageId()); |
| } |
| if (searchable.getVoiceMaxResults() != 0) { |
| maxResults = searchable.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); |
| voiceIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, searchActivity == null ? null |
| : searchActivity.flattenToShortString()); |
| |
| // 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; |
| } |
| |
| /** |
| * 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. |
| * |
| * @param c The suggestions cursor, moved to the row of the user's selection |
| * @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. |
| * @return An intent for the suggestion at the cursor's position. |
| */ |
| private Intent createIntentFromSuggestion(Cursor c, int actionKey, String actionMsg) { |
| try { |
| // use specific action if supplied, or default action if supplied, or fixed default |
| String action = getColumnString(c, SearchManager.SUGGEST_COLUMN_INTENT_ACTION); |
| |
| if (action == null) { |
| action = mSearchable.getSuggestIntentAction(); |
| } |
| if (action == null) { |
| action = Intent.ACTION_SEARCH; |
| } |
| |
| // use specific data if supplied, or default data if supplied |
| String data = getColumnString(c, SearchManager.SUGGEST_COLUMN_INTENT_DATA); |
| if (data == null) { |
| data = mSearchable.getSuggestIntentData(); |
| } |
| // then, if an ID was provided, append it. |
| if (data != null) { |
| String id = getColumnString(c, SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID); |
| if (id != null) { |
| data = data + "/" + Uri.encode(id); |
| } |
| } |
| Uri dataUri = (data == null) ? null : Uri.parse(data); |
| |
| String query = getColumnString(c, SearchManager.SUGGEST_COLUMN_QUERY); |
| String extraData = getColumnString(c, SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA); |
| |
| return createIntent(action, dataUri, extraData, query, actionKey, actionMsg); |
| } 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()); |
| return null; |
| } |
| } |
| |
| /** |
| * Callback to watch the text 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) { |
| SearchView.this.onTextChanged(s); |
| } |
| |
| public void afterTextChanged(Editable s) { |
| } |
| }; |
| } |