package de.pixart.messenger.ui; import android.content.Context; import android.databinding.DataBindingUtil; import android.os.Bundle; import android.support.v7.widget.Toolbar; import android.text.Editable; import android.text.TextWatcher; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.inputmethod.InputMethodManager; import android.widget.ArrayAdapter; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import java.util.ArrayList; import java.util.List; import de.pixart.messenger.R; import de.pixart.messenger.databinding.ActivityChooseContactBinding; import de.pixart.messenger.entities.ListItem; import de.pixart.messenger.ui.adapter.ListItemAdapter; public abstract class AbstractSearchableListItemActivity extends XmppActivity implements TextView.OnEditorActionListener { protected ActivityChooseContactBinding binding; private final List listItems = new ArrayList<>(); private ArrayAdapter mListItemsAdapter; private EditText mSearchEditText; private final MenuItem.OnActionExpandListener mOnActionExpandListener = new MenuItem.OnActionExpandListener() { @Override public boolean onMenuItemActionExpand(final MenuItem item) { mSearchEditText.post(() -> { mSearchEditText.requestFocus(); final InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); imm.showSoftInput(mSearchEditText, InputMethodManager.SHOW_IMPLICIT); }); return true; } @Override public boolean onMenuItemActionCollapse(final MenuItem item) { final InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(mSearchEditText.getWindowToken(), InputMethodManager.HIDE_IMPLICIT_ONLY); mSearchEditText.setText(""); filterContacts(); return true; } }; private final TextWatcher mSearchTextWatcher = new TextWatcher() { @Override public void afterTextChanged(final Editable editable) { filterContacts(editable.toString()); } @Override public void beforeTextChanged(final CharSequence s, final int start, final int count, final int after) { } @Override public void onTextChanged(final CharSequence s, final int start, final int before, final int count) { } }; public ListView getListView() { return binding.chooseContactList; } public List getListItems() { return listItems; } public EditText getSearchEditText() { return mSearchEditText; } public ArrayAdapter getListItemAdapter() { return mListItemsAdapter; } @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.binding = DataBindingUtil.setContentView(this, R.layout.activity_choose_contact); setSupportActionBar((Toolbar) binding.toolbar); configureActionBar(getSupportActionBar()); this.binding.chooseContactList.setFastScrollEnabled(true); mListItemsAdapter = new ListItemAdapter(this, listItems); this.binding.chooseContactList.setAdapter(mListItemsAdapter); } @Override public boolean onCreateOptionsMenu(final Menu menu) { getMenuInflater().inflate(R.menu.choose_contact, menu); final MenuItem menuSearchView = menu.findItem(R.id.action_search); final View mSearchView = menuSearchView.getActionView(); mSearchEditText = mSearchView.findViewById(R.id.search_field); mSearchEditText.addTextChangedListener(mSearchTextWatcher); mSearchEditText.setHint(R.string.search_contacts); mSearchEditText.setOnEditorActionListener(this); menuSearchView.setOnActionExpandListener(mOnActionExpandListener); return true; } protected void filterContacts() { final String needle = mSearchEditText != null ? mSearchEditText.getText().toString() : null; if (needle != null && !needle.isEmpty()) { filterContacts(needle); } else { filterContacts(null); } } protected abstract void filterContacts(final String needle); @Override void onBackendConnected() { filterContacts(); } @Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { return false; } }