FairEmail/app/src/main/java/eu/faircode/email/AdapterImage.java

305 lines
11 KiB
Java

package eu.faircode.email;
/*
This file is part of FairEmail.
FairEmail is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
FairEmail is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
Copyright 2018-2019 by Marcel Bokhorst (M66B)
*/
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.core.content.FileProvider;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
import androidx.lifecycle.LifecycleOwner;
import androidx.lifecycle.OnLifecycleEvent;
import androidx.recyclerview.widget.DiffUtil;
import androidx.recyclerview.widget.ListUpdateCallback;
import androidx.recyclerview.widget.RecyclerView;
import com.google.android.material.snackbar.Snackbar;
import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
public class AdapterImage extends RecyclerView.Adapter<AdapterImage.ViewHolder> {
private Fragment parentFragment;
private Context context;
private LayoutInflater inflater;
private LifecycleOwner owner;
private List<EntityAttachment> items = new ArrayList<>();
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private View view;
private ImageView ivImage;
private TextView tvCaption;
private TextView tvType;
ViewHolder(View itemView) {
super(itemView);
view = itemView.findViewById(R.id.clItem);
ivImage = itemView.findViewById(R.id.ivImage);
tvCaption = itemView.findViewById(R.id.tvCaption);
tvType = itemView.findViewById(R.id.tvType);
}
private void wire() {
view.setOnClickListener(this);
}
private void unwire() {
view.setOnClickListener(null);
}
private void bindTo(EntityAttachment attachment) {
if (attachment.available) {
Bitmap bm = Helper.decodeImage(attachment.getFile(context),
context.getResources().getDisplayMetrics().widthPixels);
if (bm == null)
ivImage.setImageResource(R.drawable.baseline_broken_image_24);
else
ivImage.setImageBitmap(bm);
} else
ivImage.setImageResource(attachment.progress == null
? R.drawable.baseline_image_24 : R.drawable.baseline_hourglass_empty_24);
tvCaption.setVisibility(TextUtils.isEmpty(attachment.name) ? View.GONE : View.VISIBLE);
tvCaption.setText(attachment.name);
tvType.setText(attachment.type);
}
@Override
public void onClick(View view) {
int pos = getAdapterPosition();
if (pos == RecyclerView.NO_POSITION)
return;
EntityAttachment attachment = items.get(pos);
if (attachment.available) {
// Build file name
File file = attachment.getFile(context);
// https://developer.android.com/reference/android/support/v4/content/FileProvider
Uri uri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID, file);
Log.i("uri=" + uri);
// Build intent
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(uri, attachment.type);
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
if (!TextUtils.isEmpty(attachment.name))
intent.putExtra(Intent.EXTRA_TITLE, attachment.name);
Log.i("Sharing " + file + " type=" + attachment.type);
Log.i("Intent=" + intent);
// Get targets
PackageManager pm = context.getPackageManager();
List<ResolveInfo> ris = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo ri : ris) {
Log.i("Target=" + ri);
context.grantUriPermission(ri.activityInfo.packageName, uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
}
// Check if viewer available
if (ris.size() == 0) {
Snackbar.make(
parentFragment.getView(),
context.getString(R.string.title_no_viewer, attachment.type),
Snackbar.LENGTH_LONG).show();
return;
}
context.startActivity(intent);
} else {
if (attachment.progress == null) {
Bundle args = new Bundle();
args.putLong("id", attachment.id);
args.putLong("message", attachment.message);
new SimpleTask<Void>() {
@Override
protected Void onExecute(Context context, Bundle args) {
long id = args.getLong("id");
long mid = args.getLong("message");
DB db = DB.getInstance(context);
try {
db.beginTransaction();
EntityMessage message = db.message().getMessage(mid);
if (message == null || message.uid == null)
return null;
EntityAttachment attachment = db.attachment().getAttachment(id);
if (attachment == null || attachment.progress != null || attachment.available)
return null;
EntityOperation.queue(context, message, EntityOperation.ATTACHMENT, id);
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
return null;
}
@Override
protected void onException(Bundle args, Throwable ex) {
Helper.unexpectedError(parentFragment.getFragmentManager(), ex);
}
}.execute(context, owner, args, "image:fetch");
}
}
}
}
AdapterImage(Fragment parentFragment) {
this.parentFragment = parentFragment;
this.context = parentFragment.getContext();
this.owner = parentFragment.getViewLifecycleOwner();
this.inflater = LayoutInflater.from(context);
setHasStableIds(true);
owner.getLifecycle().addObserver(new LifecycleObserver() {
@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
public void onDestroyed() {
Log.i(AdapterImage.this + " parent destroyed");
AdapterImage.this.parentFragment = null;
}
});
}
public void set(@NonNull List<EntityAttachment> attachments) {
Log.i("Set images=" + attachments.size());
Collections.sort(attachments, new Comparator<EntityAttachment>() {
@Override
public int compare(EntityAttachment a1, EntityAttachment a2) {
return a1.sequence.compareTo(a2.sequence);
}
});
DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new DiffCallback(items, attachments), false);
items = attachments;
diff.dispatchUpdatesTo(new ListUpdateCallback() {
@Override
public void onInserted(int position, int count) {
Log.i("Inserted @" + position + " #" + count);
}
@Override
public void onRemoved(int position, int count) {
Log.i("Removed @" + position + " #" + count);
}
@Override
public void onMoved(int fromPosition, int toPosition) {
Log.i("Moved " + fromPosition + ">" + toPosition);
}
@Override
public void onChanged(int position, int count, Object payload) {
Log.i("Changed @" + position + " #" + count);
}
});
diff.dispatchUpdatesTo(this);
}
private class DiffCallback extends DiffUtil.Callback {
private List<EntityAttachment> prev = new ArrayList<>();
private List<EntityAttachment> next = new ArrayList<>();
DiffCallback(List<EntityAttachment> prev, List<EntityAttachment> next) {
this.prev.addAll(prev);
this.next.addAll(next);
}
@Override
public int getOldListSize() {
return prev.size();
}
@Override
public int getNewListSize() {
return next.size();
}
@Override
public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
EntityAttachment a1 = prev.get(oldItemPosition);
EntityAttachment a2 = next.get(newItemPosition);
return a1.id.equals(a2.id);
}
@Override
public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
EntityAttachment a1 = prev.get(oldItemPosition);
EntityAttachment a2 = next.get(newItemPosition);
return a1.equals(a2);
}
}
@Override
public long getItemId(int position) {
return items.get(position).id;
}
@Override
public int getItemCount() {
return items.size();
}
@Override
@NonNull
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
return new ViewHolder(inflater.inflate(R.layout.item_image, parent, false));
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
holder.unwire();
EntityAttachment attachment = items.get(position);
holder.bindTo(attachment);
holder.wire();
}
}