129 lines
4.3 KiB
Java
129 lines
4.3 KiB
Java
package org.thoughtcrime.securesms.conversation.ui.mentions;
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import android.os.Bundle;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.lifecycle.ViewModelProviders;
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import androidx.recyclerview.widget.LinearLayoutManager;
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import androidx.recyclerview.widget.RecyclerView;
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import com.google.android.material.bottomsheet.BottomSheetBehavior;
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import org.thoughtcrime.securesms.LoggingFragment;
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import org.thoughtcrime.securesms.R;
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import org.thoughtcrime.securesms.recipients.Recipient;
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import org.thoughtcrime.securesms.util.MappingModel;
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import org.thoughtcrime.securesms.util.VibrateUtil;
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import java.util.Collections;
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import java.util.List;
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public class MentionsPickerFragment extends LoggingFragment {
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private MentionsPickerAdapter adapter;
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private RecyclerView list;
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private View topDivider;
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private View bottomDivider;
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private BottomSheetBehavior<View> behavior;
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private MentionsPickerViewModel viewModel;
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private Runnable lockSheetAfterListUpdate = () -> behavior.setHideable(false);
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@Override
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public @Nullable View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
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View view = inflater.inflate(R.layout.mentions_picker_fragment, container, false);
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list = view.findViewById(R.id.mentions_picker_list);
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topDivider = view.findViewById(R.id.mentions_picker_top_divider);
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bottomDivider = view.findViewById(R.id.mentions_picker_bottom_divider);
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behavior = BottomSheetBehavior.from(view.findViewById(R.id.mentions_picker_bottom_sheet));
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initializeBehavior();
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return view;
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}
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@Override
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public void onActivityCreated(@Nullable Bundle savedInstanceState) {
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super.onActivityCreated(savedInstanceState);
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viewModel = ViewModelProviders.of(requireActivity()).get(MentionsPickerViewModel.class);
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initializeList();
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viewModel.getMentionList().observe(getViewLifecycleOwner(), this::updateList);
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viewModel.isShowing().observe(getViewLifecycleOwner(), isShowing -> {
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if (isShowing) {
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VibrateUtil.vibrateTick(requireContext());
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}
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});
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}
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private void initializeBehavior() {
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behavior.setHideable(true);
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behavior.setState(BottomSheetBehavior.STATE_HIDDEN);
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behavior.addBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
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@Override
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public void onStateChanged(@NonNull View bottomSheet, int newState) {
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if (newState == BottomSheetBehavior.STATE_HIDDEN) {
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adapter.submitList(Collections.emptyList());
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showDividers(false);
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} else {
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showDividers(true);
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}
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}
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@Override
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public void onSlide(@NonNull View bottomSheet, float slideOffset) {
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showDividers(Float.isNaN(slideOffset) || slideOffset > -0.8f);
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}
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});
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}
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private void initializeList() {
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adapter = new MentionsPickerAdapter(this::handleMentionClicked, () -> updateBottomSheetBehavior(adapter.getItemCount()));
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list.setLayoutManager(new LinearLayoutManager(requireContext()));
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list.setAdapter(adapter);
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list.setItemAnimator(null);
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}
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private void handleMentionClicked(@NonNull Recipient recipient) {
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viewModel.onSelectionChange(recipient);
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}
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private void updateList(@NonNull List<MappingModel<?>> mappingModels) {
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if (adapter.getItemCount() > 0 && mappingModels.isEmpty()) {
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updateBottomSheetBehavior(0);
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} else {
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adapter.submitList(mappingModels);
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}
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}
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private void updateBottomSheetBehavior(int count) {
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boolean isShowing = count > 0;
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viewModel.setIsShowing(isShowing);
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if (isShowing) {
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list.scrollToPosition(0);
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behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
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list.post(lockSheetAfterListUpdate);
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showDividers(true);
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} else {
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list.getHandler().removeCallbacks(lockSheetAfterListUpdate);
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behavior.setHideable(true);
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behavior.setState(BottomSheetBehavior.STATE_HIDDEN);
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}
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}
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private void showDividers(boolean showDividers) {
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topDivider.setVisibility(showDividers ? View.VISIBLE : View.GONE);
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bottomDivider.setVisibility(showDividers ? View.VISIBLE : View.GONE);
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}
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}
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