TextFieldExposedDropdownMenuDemoFragment.java

/*
 * Copyright 2019 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
 *
 *     https://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 io.material.catalog.textfield;

import io.material.catalog.R;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import androidx.annotation.LayoutRes;
import androidx.annotation.Nullable;
import com.google.android.material.textfield.TextInputLayout;

/**
 * A fragment that displays the filled text field demos with start and end icons and controls for
 * the Catalog app.
 */
public class TextFieldExposedDropdownMenuDemoFragment extends TextFieldControllableDemoFragment {

  @Override
  @LayoutRes
  public int getTextFieldContent() {
    return R.layout.cat_textfield_exposed_dropdown_menu_content;
  }

  @Override
  public View onCreateDemoView(
      LayoutInflater layoutInflater, @Nullable ViewGroup viewGroup, @Nullable Bundle bundle) {
    View view = super.onCreateDemoView(layoutInflater, viewGroup, bundle);

    // Initialize button for toggling the leading icon's visibility.
    Button toggleLeadingIconButton = view.findViewById(R.id.button_toggle_leading_icon);
    toggleLeadingIconButton.setVisibility(View.VISIBLE);
    toggleLeadingIconButton.setOnClickListener(
        v -> {
          if (!textfields.isEmpty() && textfields.get(0).getStartIconDrawable() == null) {
            for (TextInputLayout textfield : textfields) {
              textfield.setStartIconDrawable(R.drawable.ic_search_24px);
            }
            toggleLeadingIconButton.setText(
                getResources().getString(R.string.cat_textfield_hide_leading_icon));
          } else {
            for (TextInputLayout textfield : textfields) {
              textfield.setStartIconDrawable(null);
            }
            toggleLeadingIconButton.setText(
                getResources().getString(R.string.cat_textfield_show_leading_icon));
          }
        });
    return view;
  }
}