added media previews to timeline and media viewers

app/src/main/AndroidManifest.xml

@@ -30,6 +30,7 @@
         <activity
             android:name=".ComposeActivity"
             android:windowSoftInputMode="stateVisible|adjustResize" />
+        <activity android:name=".ViewVideoActivity" />
     </application>
 
 </manifest>

app/src/main/java/com/keylesspalace/tusky/Status.java

@@ -1,9 +1,13 @@
 package com.keylesspalace.tusky;
 
+import android.graphics.drawable.Drawable;
 import android.os.Build;
+import android.provider.MediaStore;
 import android.text.Html;
 import android.text.Spanned;
 
+import com.android.volley.toolbox.NetworkImageView;
+
 import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
@@ -38,6 +42,9 @@ public class Status {
     /** whether the authenticated user has favourited this status */
     private boolean favourited;
     private Visibility visibility;
+    private MediaAttachment[] attachments = null;
+
+    public static final int MAX_MEDIA_ATTACHMENTS = 4;
 
     public Status(String id, String accountId, String displayName, String username, Spanned content,
                   String avatar, Date createdAt, boolean reblogged, boolean favourited,
@@ -52,6 +59,7 @@ public class Status {
         this.reblogged = reblogged;
         this.favourited = favourited;
         this.visibility = Visibility.valueOf(visibility.toUpperCase());
+        this.attachments = new MediaAttachment[0];
     }
 
     public String getId() {
@@ -98,6 +106,10 @@ public class Status {
         return visibility;
     }
 
+    public MediaAttachment[] getAttachments() {
+        return attachments;
+    }
+
     public void setRebloggedByUsername(String name) {
         rebloggedByUsername = name;
     }
@@ -110,6 +122,10 @@ public class Status {
         this.favourited = favourited;
     }
 
+    public void setAttachments(MediaAttachment[] attachments) {
+        this.attachments = attachments;
+    }
+
     @Override
     public int hashCode() {
         return id.hashCode();
@@ -173,6 +189,21 @@ public class Status {
         String username = account.getString("acct");
         String avatar = account.getString("avatar");
 
+        JSONArray mediaAttachments = object.getJSONArray("media_attachments");
+        MediaAttachment[] attachments = null;
+        if (mediaAttachments != null) {
+            int n = mediaAttachments.length();
+            attachments = new MediaAttachment[n];
+            for (int i = 0; i < n; i++) {
+                JSONObject attachment = mediaAttachments.getJSONObject(i);
+                String url = attachment.getString("url");
+                String previewUrl = attachment.getString("preview_url");
+                String type = attachment.getString("type");
+                attachments[i] = new MediaAttachment(url, previewUrl,
+                        MediaAttachment.Type.valueOf(type.toUpperCase()));
+            }
+        }
+
         Status reblog = null;
         /* This case shouldn't be hit after the first recursion at all. But if this method is
          * passed unusual data this check will prevent extra recursion */
@@ -193,6 +224,9 @@ public class Status {
                     id, accountId, displayName, username, contentPlus, avatar, createdAt,
                     reblogged, favourited, visibility);
         }
+        if (attachments != null) {
+            status.setAttachments(attachments);
+        }
         return status;
     }
 
@@ -204,4 +238,33 @@ public class Status {
         }
         return statuses;
     }
+
+    public static class MediaAttachment {
+        enum Type {
+            IMAGE,
+            VIDEO,
+        }
+
+        private String url;
+        private String previewUrl;
+        private Type type;
+
+        public MediaAttachment(String url, String previewUrl, Type type) {
+            this.url = url;
+            this.previewUrl = previewUrl;
+            this.type = type;
+        }
+
+        public String getUrl() {
+            return url;
+        }
+
+        public String getPreviewUrl() {
+            return previewUrl;
+        }
+
+        public Type getType() {
+            return type;
+        }
+    }
 }

app/src/main/java/com/keylesspalace/tusky/StatusActionListener.java

@@ -6,4 +6,5 @@ public interface StatusActionListener {
     void onReblog(final boolean reblog, final int position);
     void onFavourite(final boolean favourite, final int position);
     void onMore(View view, final int position);
+    void onViewMedia(String url, Status.MediaAttachment.Type type);
 }

app/src/main/java/com/keylesspalace/tusky/TimelineAdapter.java

@@ -2,8 +2,10 @@ package com.keylesspalace.tusky;
 
 import android.content.Context;
 import android.support.annotation.Nullable;
+import android.support.v7.widget.PagerSnapHelper;
 import android.support.v7.widget.RecyclerView;
 import android.text.Spanned;
+import android.text.style.ImageSpan;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -53,6 +55,7 @@ public class TimelineAdapter extends RecyclerView.Adapter {
         } else {
             holder.setRebloggedByUsername(rebloggedByUsername);
         }
+        holder.setMediaPreviews(status.getAttachments(), listener);
         holder.setupButtons(listener, position);
         if (status.getVisibility() == Status.Visibility.PRIVATE) {
             holder.disableReblogging();
@@ -112,6 +115,11 @@ public class TimelineAdapter extends RecyclerView.Adapter {
         private ImageButton moreButton;
         private boolean favourited;
         private boolean reblogged;
+        private NetworkImageView mediaPreview0;
+        private NetworkImageView mediaPreview1;
+        private NetworkImageView mediaPreview2;
+        private NetworkImageView mediaPreview3;
+        private String[] mediaAttachmentUrls;
 
         public ViewHolder(View itemView) {
             super(itemView);
@@ -128,6 +136,10 @@ public class TimelineAdapter extends RecyclerView.Adapter {
             moreButton = (ImageButton) itemView.findViewById(R.id.status_more);
             reblogged = false;
             favourited = false;
+            mediaPreview0 = (NetworkImageView) itemView.findViewById(R.id.status_media_preview_0);
+            mediaPreview1 = (NetworkImageView) itemView.findViewById(R.id.status_media_preview_1);
+            mediaPreview2 = (NetworkImageView) itemView.findViewById(R.id.status_media_preview_2);
+            mediaPreview3 = (NetworkImageView) itemView.findViewById(R.id.status_media_preview_3);
         }
 
         public void setDisplayName(String name) {
@@ -234,6 +246,37 @@ public class TimelineAdapter extends RecyclerView.Adapter {
             }
         }
 
+        public void setMediaPreviews(final Status.MediaAttachment[] attachments,
+                 final StatusActionListener listener) {
+            final NetworkImageView[] previews = {
+                mediaPreview0,
+                mediaPreview1,
+                mediaPreview2,
+                mediaPreview3
+            };
+            Context context = mediaPreview0.getContext();
+            ImageLoader imageLoader = VolleySingleton.getInstance(context).getImageLoader();
+            int n = Math.min(attachments.length, Status.MAX_MEDIA_ATTACHMENTS);
+            for (int i = 0; i < n; i++) {
+                String previewUrl = attachments[i].getPreviewUrl();
+                previews[i].setImageUrl(previewUrl, imageLoader);
+                previews[i].setVisibility(View.VISIBLE);
+                final String url = attachments[i].getUrl();
+                final Status.MediaAttachment.Type type = attachments[i].getType();
+                previews[i].setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        listener.onViewMedia(url, type);
+                    }
+                });
+            }
+            // Hide any of the placeholder previews beyond the ones set.
+            for (int i = n; i < Status.MAX_MEDIA_ATTACHMENTS; i++) {
+                previews[i].setImageUrl(null, imageLoader);
+                previews[i].setVisibility(View.GONE);
+            }
+        }
+
         public void setupButtons(final StatusActionListener listener, final int position) {
             reblogButton.setOnClickListener(new View.OnClickListener() {
                 @Override

app/src/main/java/com/keylesspalace/tusky/TimelineFragment.java

@@ -1,11 +1,13 @@
 package com.keylesspalace.tusky;
 
 import android.content.Context;
+import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
 import android.support.v4.content.ContextCompat;
 import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.widget.DividerItemDecoration;
@@ -184,7 +186,8 @@ public class TimelineFragment extends Fragment implements
     }
 
     public void onFetchTimelineFailure(Exception exception) {
-        Toast.makeText(getContext(), R.string.error_fetching_timeline, Toast.LENGTH_SHORT).show();
+        Toast.makeText(getContext(), R.string.error_fetching_timeline, Toast.LENGTH_SHORT)
+                .show();
         swipeRefreshLayout.setRefreshing(false);
     }
 
@@ -312,4 +315,24 @@ public class TimelineFragment extends Fragment implements
                 });
         popup.show();
     }
+
+    public void onViewMedia(String url, Status.MediaAttachment.Type type) {
+        switch (type) {
+            case IMAGE: {
+                Fragment newFragment = ViewMediaFragment.newInstance(url);
+                FragmentManager manager = getFragmentManager();
+                manager.beginTransaction()
+                        .add(R.id.overlay_fragment_container, newFragment)
+                        .addToBackStack(null)
+                        .commit();
+                break;
+            }
+            case VIDEO: {
+                Intent intent = new Intent(getContext(), ViewVideoActivity.class);
+                intent.putExtra("url", url);
+                startActivity(intent);
+                break;
+            }
+        }
+    }
 }

app/src/main/java/com/keylesspalace/tusky/ViewMediaFragment.java

@@ -0,0 +1,45 @@
+package com.keylesspalace.tusky;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.android.volley.toolbox.ImageLoader;
+import com.android.volley.toolbox.NetworkImageView;
+
+public class ViewMediaFragment extends Fragment {
+    public static ViewMediaFragment newInstance(String url) {
+        Bundle arguments = new Bundle();
+        ViewMediaFragment fragment = new ViewMediaFragment();
+        arguments.putString("url", url);
+        fragment.setArguments(arguments);
+        return fragment;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, final ViewGroup container,
+                             Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_view_media, container, false);
+
+        Bundle arguments = getArguments();
+        String url = arguments.getString("url");
+        NetworkImageView image = (NetworkImageView) rootView.findViewById(R.id.view_media_image);
+        ImageLoader imageLoader = VolleySingleton.getInstance(getContext()).getImageLoader();
+        image.setImageUrl(url, imageLoader);
+
+        rootView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                dismiss();
+            }
+        });
+
+        return rootView;
+    }
+
+    private void dismiss() {
+        getFragmentManager().popBackStack();
+    }
+}

app/src/main/java/com/keylesspalace/tusky/ViewVideoActivity.java

@@ -0,0 +1,21 @@
+package com.keylesspalace.tusky;
+
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.MediaController;
+import android.widget.VideoView;
+
+public class ViewVideoActivity extends AppCompatActivity {
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_view_video);
+        String url = getIntent().getStringExtra("url");
+        VideoView videoView = (VideoView) findViewById(R.id.video_player);
+        videoView.setVideoPath(url);
+        MediaController controller = new MediaController(this);
+        videoView.setMediaController(controller);
+        controller.show();
+        videoView.start();
+    }
+}

app/src/main/res/layout/activity_main.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/activity_main"
@@ -9,7 +9,11 @@
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
-    tools:context="com.keylesspalace.tusky.MainActivity"
+    tools:context="com.keylesspalace.tusky.MainActivity">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
         android:orientation="vertical">
 
         <android.support.v7.widget.Toolbar
@@ -50,3 +54,12 @@
         </android.support.v4.view.ViewPager>
 
     </LinearLayout>
+
+    <FrameLayout
+        android:id="@+id/overlay_fragment_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+    </FrameLayout>
+
+</RelativeLayout>

app/src/main/res/layout/activity_view_video.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/view_video_background">
+
+    <VideoView
+        android:id="@+id/video_player"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_centerInParent="true" />
+
+</RelativeLayout>

app/src/main/res/layout/fragment_view_media.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#60000000">
+
+    <com.android.volley.toolbox.NetworkImageView
+        android:id="@+id/view_media_image"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_centerInParent="true"
+        android:scaleType="fitCenter" />
+
+</RelativeLayout>

app/src/main/res/layout/item_status.xml

@@ -76,11 +76,62 @@
         android:layout_toEndOf="@+id/status_avatar"
         android:layout_below="@+id/status_name_bar" />
 
+    <LinearLayout
+        android:id="@+id/status_media_preview_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:layout_below="@+id/status_content"
+        android:layout_toRightOf="@+id/status_avatar">
+
+        <LinearLayout
+            android:orientation="horizontal"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <com.android.volley.toolbox.NetworkImageView
+                android:id="@+id/status_media_preview_0"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:scaleType="centerCrop"
+                android:layout_marginTop="@dimen/status_media_preview_top_margin" />
+
+            <com.android.volley.toolbox.NetworkImageView
+                android:id="@+id/status_media_preview_1"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:scaleType="centerCrop"
+                android:layout_marginTop="@dimen/status_media_preview_top_margin" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:orientation="horizontal"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <com.android.volley.toolbox.NetworkImageView
+                android:id="@+id/status_media_preview_2"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1" />
+
+            <com.android.volley.toolbox.NetworkImageView
+                android:id="@+id/status_media_preview_3"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:scaleType="centerCrop" />
+        </LinearLayout>
+
+    </LinearLayout>
+
     <LinearLayout
         android:orientation="horizontal"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_below="@+id/status_content"
+        android:layout_below="@id/status_media_preview_container"
         android:layout_toRightOf="@+id/status_avatar"
         android:paddingBottom="8dp"
         android:paddingTop="8dp">

app/src/main/res/values/colors.xml

@@ -4,4 +4,5 @@
     <color name="colorPrimaryDark">#303F9F</color>
     <color name="colorAccent">#FF4081</color>
     <color name="gray">#4F4F4F</color>
+    <color name="view_video_background">#000000</color>
 </resources>

app/src/main/res/values/dimens.xml

@@ -5,4 +5,5 @@
     <dimen name="status_since_created_left_margin">4dp</dimen>
     <dimen name="status_avatar_padding">8dp</dimen>
     <dimen name="status_boost_icon_vertical_padding">5dp</dimen>
+    <dimen name="status_media_preview_top_margin">4dp</dimen>
 </resources>