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

302 lines
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Java
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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;
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import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.Bitmap;
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import android.net.Uri;
import android.os.Bundle;
import android.text.TextUtils;
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import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
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import androidx.core.content.FileProvider;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
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import androidx.lifecycle.LifecycleOwner;
import androidx.lifecycle.OnLifecycleEvent;
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import androidx.recyclerview.widget.DiffUtil;
import androidx.recyclerview.widget.ListUpdateCallback;
import androidx.recyclerview.widget.RecyclerView;
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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;
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public class AdapterImage extends RecyclerView.Adapter<AdapterImage.ViewHolder> {
private Fragment parentFragment;
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private Context context;
private LayoutInflater inflater;
private LifecycleOwner owner;
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private List<EntityAttachment> items = new ArrayList<>();
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public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
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private View view;
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private ImageView ivImage;
private TextView tvCaption;
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ViewHolder(View itemView) {
super(itemView);
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view = itemView.findViewById(R.id.clItem);
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ivImage = itemView.findViewById(R.id.ivImage);
tvCaption = itemView.findViewById(R.id.tvCaption);
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}
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private void wire() {
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view.setOnClickListener(this);
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}
private void unwire() {
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view.setOnClickListener(null);
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}
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private void bindTo(EntityAttachment attachment) {
if (attachment.available) {
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Bitmap bm = ImageHelper.decodeImage(attachment.getFile(context),
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context.getResources().getDisplayMetrics().widthPixels);
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if (bm == null)
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ivImage.setImageResource(R.drawable.baseline_broken_image_24);
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else
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ivImage.setImageBitmap(bm);
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} else
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ivImage.setImageResource(attachment.progress == null
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? R.drawable.baseline_image_24 : R.drawable.baseline_hourglass_empty_24);
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tvCaption.setVisibility(TextUtils.isEmpty(attachment.name) ? View.GONE : View.VISIBLE);
tvCaption.setText(attachment.name);
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}
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@Override
public void onClick(View view) {
int pos = getAdapterPosition();
if (pos == RecyclerView.NO_POSITION)
return;
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EntityAttachment attachment = items.get(pos);
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if (attachment.available) {
// Build file name
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File file = attachment.getFile(context);
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// https://developer.android.com/reference/android/support/v4/content/FileProvider
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Uri uri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID, file);
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Log.i("uri=" + uri);
// Build intent
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Intent intent = new Intent(Intent.ACTION_VIEW);
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intent.setDataAndTypeAndNormalize(uri, attachment.type);
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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) {
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Snackbar.make(
parentFragment.getView(),
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context.getString(R.string.title_no_viewer, attachment.type),
Snackbar.LENGTH_LONG).show();
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return;
}
context.startActivity(intent);
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} 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");
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long mid = args.getLong("message");
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DB db = DB.getInstance(context);
try {
db.beginTransaction();
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EntityMessage message = db.message().getMessage(mid);
if (message == null || message.uid == null)
return null;
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EntityAttachment attachment = db.attachment().getAttachment(id);
if (attachment == null || attachment.progress != null || attachment.available)
return null;
EntityOperation.queue(context, message, EntityOperation.ATTACHMENT, id);
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db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
return null;
}
@Override
protected void onException(Bundle args, Throwable ex) {
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Log.unexpectedError(parentFragment.getParentFragmentManager(), ex);
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}
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}.execute(context, owner, args, "image:fetch");
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}
}
}
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}
AdapterImage(Fragment parentFragment) {
this.parentFragment = parentFragment;
this.context = parentFragment.getContext();
this.owner = parentFragment.getViewLifecycleOwner();
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this.inflater = LayoutInflater.from(context);
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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;
}
});
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}
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);
}
});
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DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new DiffCallback(items, attachments), false);
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items = attachments;
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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);
}
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private class DiffCallback extends DiffUtil.Callback {
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private List<EntityAttachment> prev = new ArrayList<>();
private List<EntityAttachment> next = new ArrayList<>();
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DiffCallback(List<EntityAttachment> prev, List<EntityAttachment> next) {
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this.prev.addAll(prev);
this.next.addAll(next);
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}
@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) {
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return items.get(position).id;
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}
@Override
public int getItemCount() {
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return items.size();
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}
@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) {
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holder.unwire();
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EntityAttachment attachment = items.get(position);
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holder.bindTo(attachment);
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holder.wire();
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}
}