mirror of https://github.com/M66B/FairEmail.git
M66B
6 years ago
parent
8994521df3
commit
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package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2019 by Marcel Bokhorst (M66B)
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*/
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import android.content.Context;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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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.ImageView;
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import android.widget.TextView;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.List;
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import androidx.annotation.NonNull;
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import androidx.lifecycle.LifecycleOwner;
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import androidx.recyclerview.widget.DiffUtil;
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import androidx.recyclerview.widget.ListUpdateCallback;
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import androidx.recyclerview.widget.RecyclerView;
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public class AdapterImage extends RecyclerView.Adapter<AdapterImage.ViewHolder> {
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private Context context;
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private LayoutInflater inflater;
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private LifecycleOwner owner;
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private List<EntityAttachment> all = new ArrayList<>();
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private List<EntityAttachment> filtered = new ArrayList<>();
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public class ViewHolder extends RecyclerView.ViewHolder {
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View itemView;
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ImageView image;
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TextView caption;
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ViewHolder(View itemView) {
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super(itemView);
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this.itemView = itemView;
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image = itemView.findViewById(R.id.image);
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caption = itemView.findViewById(R.id.caption);
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}
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private void bindTo(EntityAttachment attachment) {
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if (attachment.available) {
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Drawable d = BitmapDrawable.createFromPath(
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EntityAttachment.getFile(context, attachment.id).getAbsolutePath());
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if (d == null)
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image.setImageResource(R.drawable.baseline_broken_image_24);
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else
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image.setImageDrawable(d);
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} else
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image.setImageResource(R.drawable.baseline_image_24);
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caption.setText(attachment.name);
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}
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}
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AdapterImage(Context context, LifecycleOwner owner) {
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this.context = context;
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this.inflater = LayoutInflater.from(context);
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this.owner = owner;
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setHasStableIds(true);
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}
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public void set(@NonNull List<EntityAttachment> attachments) {
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Log.i("Set images=" + attachments.size());
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Collections.sort(attachments, new Comparator<EntityAttachment>() {
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@Override
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public int compare(EntityAttachment a1, EntityAttachment a2) {
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return a1.sequence.compareTo(a2.sequence);
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}
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});
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all = attachments;
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DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new MessageDiffCallback(filtered, all));
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filtered.clear();
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filtered.addAll(all);
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diff.dispatchUpdatesTo(new ListUpdateCallback() {
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@Override
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public void onInserted(int position, int count) {
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Log.i("Inserted @" + position + " #" + count);
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}
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@Override
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public void onRemoved(int position, int count) {
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Log.i("Removed @" + position + " #" + count);
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}
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@Override
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public void onMoved(int fromPosition, int toPosition) {
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Log.i("Moved " + fromPosition + ">" + toPosition);
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}
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@Override
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public void onChanged(int position, int count, Object payload) {
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Log.i("Changed @" + position + " #" + count);
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}
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});
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diff.dispatchUpdatesTo(this);
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}
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private class MessageDiffCallback extends DiffUtil.Callback {
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private List<EntityAttachment> prev;
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private List<EntityAttachment> next;
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MessageDiffCallback(List<EntityAttachment> prev, List<EntityAttachment> next) {
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this.prev = prev;
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this.next = next;
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}
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@Override
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public int getOldListSize() {
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return prev.size();
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}
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@Override
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public int getNewListSize() {
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return next.size();
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}
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@Override
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public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
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EntityAttachment a1 = prev.get(oldItemPosition);
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EntityAttachment a2 = next.get(newItemPosition);
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return a1.id.equals(a2.id);
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}
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@Override
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public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
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EntityAttachment a1 = prev.get(oldItemPosition);
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EntityAttachment a2 = next.get(newItemPosition);
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return a1.equals(a2);
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}
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}
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@Override
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public long getItemId(int position) {
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return filtered.get(position).id;
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}
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@Override
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public int getItemCount() {
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return filtered.size();
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}
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@Override
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@NonNull
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public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
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return new ViewHolder(inflater.inflate(R.layout.item_image, parent, false));
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}
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@Override
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public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
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EntityAttachment attachment = filtered.get(position);
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holder.bindTo(attachment);
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}
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}
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@ -0,0 +1,29 @@
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<?xml version="1.0" encoding="utf-8"?>
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<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:padding="6dp">
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<ImageView
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android:id="@+id/image"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:adjustViewBounds="true"
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android:scaleType="centerCrop"
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android:src="@mipmap/ic_launcher"
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app:layout_constraintEnd_toEndOf="parent"
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app:layout_constraintStart_toStartOf="parent"
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app:layout_constraintTop_toTopOf="parent" />
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<TextView
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android:id="@+id/caption"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:gravity="center_horizontal"
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android:text="Launcher icon"
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android:textAppearance="@style/TextAppearance.AppCompat.Small"
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app:layout_constraintEnd_toEndOf="parent"
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app:layout_constraintStart_toStartOf="parent"
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app:layout_constraintTop_toBottomOf="@id/image" />
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</androidx.constraintlayout.widget.ConstraintLayout>
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