Make attachment viewer swipeable

1 files changed, 74 insertions, 0 deletions

diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/ui/attachments/AttachmentAdapter.java b/app/src/main/java/it/niedermann/nextcloud/deck/ui/attachments/AttachmentAdapter.java
new file mode 100644
index 000000000..1d7307ccd
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/ui/attachments/AttachmentAdapter.java
@@ -0,0 +1,74 @@
+package it.niedermann.nextcloud.deck.ui.attachments;
+
+import android.content.Context;
+import android.os.Build;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.bumptech.glide.Glide;
+
+import java.util.List;
+
+import it.niedermann.nextcloud.deck.R;
+import it.niedermann.nextcloud.deck.databinding.ItemAttachmentBinding;
+import it.niedermann.nextcloud.deck.model.Account;
+import it.niedermann.nextcloud.deck.model.Attachment;
+import it.niedermann.nextcloud.deck.util.AttachmentUtil;
+
+public class AttachmentAdapter extends RecyclerView.Adapter<AttachmentAdapter.AttachmentViewHolder> {
+
+    private final Account account;
+    private final long cardRemoteId;
+    @NonNull
+    private List<Attachment> attachments;
+    private Context context;
+
+    public AttachmentAdapter(@NonNull Account account, long cardRemoteId, @NonNull List<Attachment> attachments) {
+        super();
+        this.attachments = attachments;
+        this.account = account;
+        this.cardRemoteId = cardRemoteId;
+    }
+
+    @NonNull
+    @Override
+    public AttachmentViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        this.context = parent.getContext();
+        return new AttachmentViewHolder(ItemAttachmentBinding.inflate(LayoutInflater.from(context), parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull AttachmentViewHolder holder, int position) {
+        Attachment attachment = attachments.get(position);
+        String uri = AttachmentUtil.getUrl(account.getUrl(), cardRemoteId, attachment.getId());
+        if (attachment.getMimetype() != null) {
+            if (attachment.getMimetype().startsWith("image")) {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                    holder.binding.preview.setTransitionName(context.getString(R.string.transition_attachment_preview, String.valueOf(attachment.getLocalId())));
+                }
+                holder.binding.preview.setImageResource(R.drawable.ic_image_grey600_24dp);
+                Glide.with(context)
+                        .load(uri)
+                        .error(R.drawable.ic_image_grey600_24dp)
+                        .into(holder.binding.preview);
+            }
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return attachments.size();
+    }
+
+    static class AttachmentViewHolder extends RecyclerView.ViewHolder {
+        private ItemAttachmentBinding binding;
+
+        private AttachmentViewHolder(ItemAttachmentBinding binding) {
+            super(binding.getRoot());
+            this.binding = binding;
+        }
+    }
+}