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/*
* Copyright (C) 2021 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.widget.picker.search;
import static android.view.View.GONE;
import static android.view.View.VISIBLE;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ImageButton;
import com.android.launcher3.ExtendedEditText;
import com.android.launcher3.search.SearchAlgorithm;
import com.android.launcher3.search.SearchCallback;
import com.android.launcher3.widget.model.WidgetsListBaseEntry;
import java.util.ArrayList;
/**
* Controller for a search bar with an edit text and a cancel button.
*/
public class WidgetsSearchBarController implements TextWatcher,
SearchCallback<WidgetsListBaseEntry>, ExtendedEditText.OnBackKeyListener,
View.OnKeyListener {
private static final String TAG = "WidgetsSearchBarController";
private static final boolean DEBUG = false;
protected SearchAlgorithm<WidgetsListBaseEntry> mSearchAlgorithm;
protected ExtendedEditText mInput;
protected ImageButton mCancelButton;
protected SearchModeListener mSearchModeListener;
protected String mQuery;
public WidgetsSearchBarController(
SearchAlgorithm<WidgetsListBaseEntry> algo, ExtendedEditText editText,
ImageButton cancelButton, SearchModeListener searchModeListener) {
mSearchAlgorithm = algo;
mInput = editText;
mInput.addTextChangedListener(this);
mInput.setOnBackKeyListener(this);
mInput.setOnKeyListener(this);
mCancelButton = cancelButton;
mCancelButton.setOnClickListener(v -> clearSearchResult());
mSearchModeListener = searchModeListener;
}
@Override
public void afterTextChanged(final Editable s) {
mQuery = s.toString();
if (mQuery.isEmpty()) {
mSearchAlgorithm.cancel(/* interruptActiveRequests= */ true);
mSearchModeListener.exitSearchMode();
mCancelButton.setVisibility(GONE);
} else {
mSearchAlgorithm.cancel(/* interruptActiveRequests= */ false);
mSearchModeListener.enterSearchMode();
mSearchAlgorithm.doSearch(mQuery, this);
mCancelButton.setVisibility(VISIBLE);
}
}
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
// Do nothing.
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
// Do nothing.
}
@Override
public void onSearchResult(String query, ArrayList<WidgetsListBaseEntry> items) {
if (DEBUG) {
Log.d(TAG, "onSearchResult query: " + query + " items: " + items);
}
mSearchModeListener.onSearchResults(items);
}
@Override
public void clearSearchResult() {
// Any existing search session will be cancelled by setting text to empty.
mInput.setText("");
}
/**
* Cleans up after search is no longer needed.
*/
public void onDestroy() {
mSearchAlgorithm.destroy();
}
@Override
public boolean onBackKey() {
clearFocus();
return true;
}
@Override
public boolean onKey(View view, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_ENTER && event.getAction() == KeyEvent.ACTION_UP) {
clearFocus();
return true;
}
return false;
}
/**
* Clears focus from edit text.
*/
public void clearFocus() {
mInput.clearFocus();
mInput.hideKeyboard();
}
}
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