111 lines
3.7 KiB
Java
111 lines
3.7 KiB
Java
package org.mercury_im.messenger.ui.chat;
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import android.util.SparseBooleanArray;
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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 android.widget.TextView;
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import androidx.annotation.NonNull;
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import androidx.recyclerview.widget.RecyclerView;
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import org.mercury_im.messenger.R;
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import org.mercury_im.messenger.entity.message.Message;
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import org.mercury_im.messenger.entity.message.content.TextPayload;
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import org.mercury_im.messenger.ui.util.MessageBackgroundDrawable;
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import java.util.ArrayList;
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import java.util.List;
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public class MessagesRecyclerViewAdapter extends RecyclerView.Adapter<MessagesRecyclerViewAdapter.MessageViewHolder> {
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private List<Message> messages = new ArrayList<>();
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private SparseBooleanArray checkedItems = new SparseBooleanArray();
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public MessagesRecyclerViewAdapter() {
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}
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public void updateMessages(List<Message> messages) {
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this.messages.clear();
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this.messages.addAll(messages);
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notifyDataSetChanged();
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}
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public void setItemChecked(int position, boolean checked) {
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checkedItems.put(position, checked);
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}
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public boolean isItemChecked(int position) {
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return checkedItems.get(position, false);
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}
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@NonNull
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@Override
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public MessageViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
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return new MessageViewHolder(LayoutInflater.from(parent.getContext()).inflate(viewType, parent, false));
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}
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@Override
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public void onBindViewHolder(@NonNull MessageViewHolder holder, int position) {
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Message message = messages.get(position);
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MessageBackgroundDrawable background = getBackgroundDrawable(position);
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if (message.isIncoming()) {
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holder.body.setBackgroundResource(background.getIncomingDrawable());
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} else {
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holder.body.setBackgroundResource(background.getOutgoingDrawable());
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}
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holder.body.setText(((TextPayload) message.getMessagePayloads().get(0).getMessageContents().get(0)).getBody());
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holder.body.requestLayout();
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}
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@Override
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public int getItemViewType(int position) {
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if (messages.get(position).isIncoming()) {
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return R.layout.view_message_text_in;
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} else {
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return R.layout.view_message_text_out;
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}
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}
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@Override
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public int getItemCount() {
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return messages.size();
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}
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public class MessageViewHolder extends RecyclerView.ViewHolder {
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private TextView body;
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public MessageViewHolder(@NonNull View itemView) {
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super(itemView);
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body = itemView.findViewById(R.id.msg_body);
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}
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}
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public MessageBackgroundDrawable getBackgroundDrawable(int pos) {
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Message subject = messages.get(pos);
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Message predecessor = pos != 0 ? messages.get(pos - 1) : null;
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Message successor = pos != messages.size() - 1 ? messages.get(pos + 1) : null;
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if (predecessor == null || predecessor.isIncoming() != subject.isIncoming()) {
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if (successor == null || successor.isIncoming() != subject.isIncoming()) {
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// This is a single message
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return MessageBackgroundDrawable.SINGLE;
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} else {
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// This is the first message of a group
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return MessageBackgroundDrawable.FIRST;
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}
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} else {
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if (successor == null || successor.isIncoming() != subject.isIncoming()) {
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// This is the last message of a group
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return MessageBackgroundDrawable.LAST;
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} else {
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// This message is in the middle of a group
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return MessageBackgroundDrawable.MID;
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}
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}
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}
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}
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