show conversation media in contact/conference details

1 files changed, 226 insertions, 0 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java
new file mode 100644
index 000000000..0472c6d11
--- /dev/null
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java
@@ -0,0 +1,226 @@
+package de.pixart.messenger.ui.adapter;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.databinding.DataBindingUtil;
+import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.os.AsyncTask;
+import android.support.annotation.AttrRes;
+import android.support.annotation.DimenRes;
+import android.support.annotation.NonNull;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import java.lang.ref.WeakReference;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.RejectedExecutionException;
+
+import de.pixart.messenger.R;
+import de.pixart.messenger.databinding.MediaBinding;
+import de.pixart.messenger.ui.XmppActivity;
+import de.pixart.messenger.ui.util.Attachment;
+import de.pixart.messenger.ui.util.StyledAttributes;
+import de.pixart.messenger.ui.util.ViewUtil;
+
+public class MediaAdapter extends RecyclerView.Adapter<MediaAdapter.MediaViewHolder> {
+
+    private static final List<String> DOCUMENT_MIMES = Arrays.asList(
+            "application/pdf",
+            "application/vnd.oasis.opendocument.text",
+            "application/msword",
+            "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+            "text/x-tex",
+            "text/plain"
+    );
+
+    private final ArrayList<Attachment> attachments = new ArrayList<>();
+
+    private final XmppActivity activity;
+
+    private int mediaSize = 0;
+
+    public MediaAdapter(XmppActivity activity, @DimenRes int mediaSize) {
+        this.activity = activity;
+        this.mediaSize = Math.round(activity.getResources().getDimension(mediaSize));
+    }
+
+    public static void setMediaSize(RecyclerView recyclerView, int mediaSize) {
+        RecyclerView.Adapter adapter = recyclerView.getAdapter();
+        if (adapter instanceof MediaAdapter) {
+            ((MediaAdapter) adapter).setMediaSize(mediaSize);
+        }
+    }
+
+    private static @AttrRes
+    int getImageAttr(Attachment attachment) {
+        final @AttrRes int attr;
+        if (attachment.getType() == Attachment.Type.LOCATION) {
+            attr = R.attr.media_preview_location;
+        } else if (attachment.getType() == Attachment.Type.RECORDING) {
+            attr = R.attr.media_preview_recording;
+        } else {
+            final String mime = attachment.getMime();
+            if (mime == null) {
+                attr = R.attr.media_preview_unknown;
+            } else if (mime.startsWith("audio/")) {
+                attr = R.attr.media_preview_audio;
+            } else if (mime.equals("text/calendar") || (mime.equals("text/x-vcalendar"))) {
+                attr = R.attr.media_preview_calendar;
+            } else if (mime.equals("text/x-vcard")) {
+                attr = R.attr.media_preview_contact;
+            } else if (mime.equals("application/vnd.android.package-archive")) {
+                attr = R.attr.media_preview_app;
+            } else if (mime.equals("application/zip") || mime.equals("application/rar")) {
+                attr = R.attr.media_preview_archive;
+            } else if (DOCUMENT_MIMES.contains(mime)) {
+                attr = R.attr.media_preview_document;
+            } else {
+                attr = R.attr.media_preview_unknown;
+            }
+        }
+        return attr;
+    }
+
+    public static void renderPreview(Context context, Attachment attachment, ImageView imageView) {
+        imageView.setBackgroundColor(StyledAttributes.getColor(context, R.attr.color_background_tertiary));
+        imageView.setImageAlpha(Math.round(StyledAttributes.getFloat(context, R.attr.icon_alpha) * 255));
+        imageView.setImageDrawable(StyledAttributes.getDrawable(context, getImageAttr(attachment)));
+    }
+
+    private static boolean cancelPotentialWork(Attachment attachment, ImageView imageView) {
+        final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
+
+        if (bitmapWorkerTask != null) {
+            final Attachment oldAttachment = bitmapWorkerTask.attachment;
+            if (oldAttachment == null || !oldAttachment.equals(attachment)) {
+                bitmapWorkerTask.cancel(true);
+            } else {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
+        if (imageView != null) {
+            final Drawable drawable = imageView.getDrawable();
+            if (drawable instanceof AsyncDrawable) {
+                final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
+                return asyncDrawable.getBitmapWorkerTask();
+            }
+        }
+        return null;
+    }
+
+    @NonNull
+    @Override
+    public MediaViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
+        MediaBinding binding = DataBindingUtil.inflate(layoutInflater, R.layout.media, parent, false);
+        return new MediaViewHolder(binding);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull MediaViewHolder holder, int position) {
+        final Attachment attachment = attachments.get(position);
+        if (attachment.renderThumbnail()) {
+            holder.binding.media.setImageAlpha(255);
+            loadPreview(attachment, holder.binding.media);
+        } else {
+            cancelPotentialWork(attachment, holder.binding.media);
+            renderPreview(activity, attachment, holder.binding.media);
+        }
+        holder.binding.media.setOnClickListener(v -> ViewUtil.view(activity, attachment));
+    }
+
+    public void setAttachments(List<Attachment> attachments) {
+        this.attachments.clear();
+        this.attachments.addAll(attachments);
+        notifyDataSetChanged();
+    }
+
+    private void setMediaSize(int mediaSize) {
+        this.mediaSize = mediaSize;
+    }
+
+    private void loadPreview(Attachment attachment, ImageView imageView) {
+        if (cancelPotentialWork(attachment, imageView)) {
+            final Bitmap bm = activity.xmppConnectionService.getFileBackend().getPreviewForUri(attachment, mediaSize, true);
+            if (bm != null) {
+                cancelPotentialWork(attachment, imageView);
+                imageView.setImageBitmap(bm);
+                imageView.setBackgroundColor(0x00000000);
+            } else {
+                imageView.setBackgroundColor(0xff333333);
+                imageView.setImageDrawable(null);
+                final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
+                final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
+                imageView.setImageDrawable(asyncDrawable);
+                try {
+                    task.execute(attachment);
+                } catch (final RejectedExecutionException ignored) {
+                }
+            }
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return attachments.size();
+    }
+
+    static class AsyncDrawable extends BitmapDrawable {
+        private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
+
+        AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
+            super(res, bitmap);
+            bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
+        }
+
+        BitmapWorkerTask getBitmapWorkerTask() {
+            return bitmapWorkerTaskReference.get();
+        }
+    }
+
+    class MediaViewHolder extends RecyclerView.ViewHolder {
+
+        private final MediaBinding binding;
+
+        MediaViewHolder(MediaBinding binding) {
+            super(binding.getRoot());
+            this.binding = binding;
+        }
+    }
+
+    class BitmapWorkerTask extends AsyncTask<Attachment, Void, Bitmap> {
+        private final WeakReference<ImageView> imageViewReference;
+        private Attachment attachment = null;
+
+        BitmapWorkerTask(ImageView imageView) {
+            imageViewReference = new WeakReference<>(imageView);
+        }
+
+        @Override
+        protected Bitmap doInBackground(Attachment... params) {
+            this.attachment = params[0];
+            return activity.xmppConnectionService.getFileBackend().getPreviewForUri(this.attachment, mediaSize, false);
+        }
+
+        @Override
+        protected void onPostExecute(Bitmap bitmap) {
+            if (bitmap != null && !isCancelled()) {
+                final ImageView imageView = imageViewReference.get();
+                if (imageView != null) {
+                    imageView.setImageBitmap(bitmap);
+                    imageView.setBackgroundColor(0x00000000);
+                }
+            }
+        }
+    }
+}
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