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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher3.allapps;
import android.content.Context;
import android.content.Intent;
import android.graphics.Rect;
import android.net.Uri;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;
import com.android.launcher3.ExtendedEditText;
import com.android.launcher3.Launcher;
import com.android.launcher3.Utilities;
import com.android.launcher3.util.ComponentKey;
import java.util.ArrayList;
/**
* An interface to a search box that AllApps can command.
*/
public abstract class AllAppsSearchBarController
implements TextWatcher, OnEditorActionListener, ExtendedEditText.OnBackKeyListener {
protected Launcher mLauncher;
protected AlphabeticalAppsList mApps;
protected Callbacks mCb;
protected ExtendedEditText mInput;
private String mQuery;
protected DefaultAppSearchAlgorithm mSearchAlgorithm;
protected InputMethodManager mInputMethodManager;
public void setVisibility(int visibility) {
mInput.setVisibility(visibility);
}
/**
* Sets the references to the apps model and the search result callback.
*/
public final void initialize(
AlphabeticalAppsList apps, ExtendedEditText input,
Launcher launcher, Callbacks cb) {
mApps = apps;
mCb = cb;
mLauncher = launcher;
mInput = input;
mInput.addTextChangedListener(this);
mInput.setOnEditorActionListener(this);
mInput.setOnBackKeyListener(this);
mInputMethodManager = (InputMethodManager)
mInput.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
mSearchAlgorithm = onInitializeSearch();
}
/**
* To be implemented by subclasses. This method will get called when the controller is set.
*/
protected abstract DefaultAppSearchAlgorithm onInitializeSearch();
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
// Do nothing
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Do nothing
}
@Override
public void afterTextChanged(final Editable s) {
mQuery = s.toString();
if (mQuery.isEmpty()) {
mSearchAlgorithm.cancel(true);
mCb.clearSearchResult();
} else {
mSearchAlgorithm.cancel(false);
mSearchAlgorithm.doSearch(mQuery, mCb);
}
}
protected void refreshSearchResult() {
if (TextUtils.isEmpty(mQuery)) {
return;
}
// If play store continues auto updating an app, we want to show partial result.
mSearchAlgorithm.cancel(false);
mSearchAlgorithm.doSearch(mQuery, mCb);
}
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
// Skip if it's not the right action
if (actionId != EditorInfo.IME_ACTION_SEARCH) {
return false;
}
// Skip if the query is empty
String query = v.getText().toString();
if (query.isEmpty()) {
return false;
}
return mLauncher.startActivitySafely(v, createMarketSearchIntent(query), null);
}
@Override
public boolean onBackKey() {
// Only hide the search field if there is no query, or if there
// are no filtered results
String query = Utilities.trim(mInput.getEditableText().toString());
if (query.isEmpty() || mApps.hasNoFilteredResults()) {
reset();
return true;
}
return false;
}
/**
* Resets the search bar state.
*/
public void reset() {
unfocusSearchField();
mCb.clearSearchResult();
mInput.setText("");
mQuery = null;
hideKeyboard();
}
protected void hideKeyboard() {
mInputMethodManager.hideSoftInputFromWindow(mInput.getWindowToken(), 0);
}
protected void unfocusSearchField() {
View nextFocus = mInput.focusSearch(View.FOCUS_DOWN);
if (nextFocus != null) {
nextFocus.requestFocus();
}
}
/**
* Focuses the search field to handle key events.
*/
public void focusSearchField() {
mInput.showKeyboard();
}
/**
* Returns whether the search field is focused.
*/
public boolean isSearchFieldFocused() {
return mInput.isFocused();
}
/**
* Creates a new market search intent.
*/
public Intent createMarketSearchIntent(String query) {
Uri marketSearchUri = Uri.parse("market://search")
.buildUpon()
.appendQueryParameter("c", "apps")
.appendQueryParameter("q", query)
.build();
return new Intent(Intent.ACTION_VIEW).setData(marketSearchUri);
}
/**
* Callback for getting search results.
*/
public interface Callbacks {
/**
* Called when the bounds of the search bar has changed.
*/
@Deprecated
void onBoundsChanged(Rect newBounds);
/**
* Called when the search is complete.
*
* @param apps sorted list of matching components or null if in case of failure.
*/
void onSearchResult(String query, ArrayList<ComponentKey> apps);
/**
* Called when the search results should be cleared.
*/
void clearSearchResult();
}
}
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