#45: Android: Show comments

docs-android/app/src/main/java/com/sismics/docs/activity/DocumentViewActivity.java

@@ -31,6 +31,7 @@ import android.widget.Toast;
 
 import com.sismics.docs.R;
 import com.sismics.docs.adapter.AclListAdapter;
+import com.sismics.docs.adapter.CommentListAdapter;
 import com.sismics.docs.adapter.FilePagerAdapter;
 import com.sismics.docs.event.DocumentDeleteEvent;
 import com.sismics.docs.event.DocumentEditEvent;
@@ -40,6 +41,7 @@ import com.sismics.docs.event.FileDeleteEvent;
 import com.sismics.docs.fragment.DocShareFragment;
 import com.sismics.docs.listener.JsonHttpResponseHandler;
 import com.sismics.docs.model.application.ApplicationContext;
+import com.sismics.docs.resource.CommentResource;
 import com.sismics.docs.resource.DocumentResource;
 import com.sismics.docs.resource.FileResource;
 import com.sismics.docs.service.FileUploadService;
@@ -241,6 +243,9 @@ public class DocumentViewActivity extends AppCompatActivity {
             }
         });
 
+        // Grab the comments
+        updateComments();
+
         // Grab the attached files
         updateFiles();
 
@@ -268,6 +273,15 @@ public class DocumentViewActivity extends AppCompatActivity {
                 }
                 return true;
 
+            case R.id.comments:
+                drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
+                if (drawerLayout.isDrawerVisible(GravityCompat.START)) {
+                    drawerLayout.closeDrawer(GravityCompat.START);
+                } else {
+                    drawerLayout.openDrawer(GravityCompat.START);
+                }
+                return true;
+
             case R.id.download_file:
                 downloadCurrentFile();
                 return true;
@@ -572,6 +586,42 @@ public class DocumentViewActivity extends AppCompatActivity {
         });
     }
 
+    /**
+     * Refresh comments list.
+     */
+    private void updateComments() {
+        if (document == null) return;
+
+        final View progressBar = findViewById(R.id.commentProgressView);
+        final TextView emptyView = (TextView) findViewById(R.id.commentEmptyView);
+        final ListView listView = (ListView) findViewById(R.id.commentListView);
+        progressBar.setVisibility(View.VISIBLE);
+        emptyView.setVisibility(View.GONE);
+        listView.setVisibility(View.GONE);
+
+        CommentResource.list(this, document.optString("id"), new JsonHttpResponseHandler() {
+            @Override
+            public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
+                JSONArray comments = response.optJSONArray("comments");
+                listView.setAdapter(new CommentListAdapter(comments));
+                listView.setVisibility(View.VISIBLE);
+                progressBar.setVisibility(View.GONE);
+                if (comments.length() == 0) {
+                    listView.setVisibility(View.GONE);
+                    emptyView.setVisibility(View.VISIBLE);
+                }
+            }
+
+            @Override
+            public void onAllFailure(int statusCode, Header[] headers, byte[] responseBytes, Throwable throwable) {
+                emptyView.setText(R.string.error_loading_comments);
+                progressBar.setVisibility(View.GONE);
+                listView.setVisibility(View.GONE);
+                emptyView.setVisibility(View.VISIBLE);
+            }
+        });
+    }
+
     /**
      * Refresh files list.
      */

docs-android/app/src/main/java/com/sismics/docs/adapter/CommentListAdapter.java

@@ -0,0 +1,102 @@
+package com.sismics.docs.adapter;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.text.format.DateFormat;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.androidquery.AQuery;
+import com.androidquery.callback.BitmapAjaxCallback;
+import com.sismics.docs.R;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * Comment list adapter.
+ *
+ * @author bgamard.
+ */
+public class CommentListAdapter extends BaseAdapter {
+    /**
+     * AQuery.
+     */
+    private AQuery aq;
+
+    /**
+     * Tags.
+     */
+    private List<JSONObject> commentList = new ArrayList<>();
+
+    /**
+     * Comment list adapter.
+     *
+     * @param commentsArray Comments
+     */
+    public CommentListAdapter(JSONArray commentsArray) {
+        for (int i = 0; i < commentsArray.length(); i++) {
+            commentList.add(commentsArray.optJSONObject(i));
+        }
+    }
+
+    @Override
+    public int getCount() {
+        return commentList.size();
+    }
+
+    @Override
+    public JSONObject getItem(int position) {
+        return commentList.get(position);
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return getItem(position).optString("id").hashCode();
+    }
+
+    @Override
+    public View getView(int position, View view, ViewGroup parent) {
+        if (view == null) {
+            LayoutInflater vi = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+            view = vi.inflate(R.layout.comment_list_item, parent, false);
+        }
+
+        if (aq == null) {
+            aq = new AQuery(view);
+        } else {
+            aq.recycle(view);
+        }
+
+        // Fill the view
+        JSONObject comment = getItem(position);
+        TextView creatorTextView = (TextView) view.findViewById(R.id.creatorTextView);
+        TextView dateTextView = (TextView) view.findViewById(R.id.dateTextView);
+        TextView contentTextView = (TextView) view.findViewById(R.id.contentTextView);
+        ImageView gravatarImageView = (ImageView) view.findViewById(R.id.gravatarImageView);
+        creatorTextView.setText(comment.optString("creator"));
+        dateTextView.setText(DateFormat.getDateFormat(dateTextView.getContext()).format(new Date(comment.optLong("create_date"))));
+        contentTextView.setText(comment.optString("content"));
+
+        // Gravatar image
+        String gravatarUrl = "http://www.gravatar.com/avatar/" + comment.optString("creator_gravatar") + "?s=128d=identicon";
+        if (aq.shouldDelay(position, view, parent, gravatarUrl)) {
+            aq.id(gravatarImageView).image((Bitmap) null);
+        } else {
+            aq.id(gravatarImageView).image(new BitmapAjaxCallback()
+                            .url(gravatarUrl)
+                            .animation(AQuery.FADE_IN_NETWORK)
+            );
+        }
+
+        return view;
+    }
+}

docs-android/app/src/main/java/com/sismics/docs/resource/CommentResource.java

@@ -0,0 +1,35 @@
+package com.sismics.docs.resource;
+
+import android.content.Context;
+
+import com.sismics.docs.listener.JsonHttpResponseHandler;
+
+
+/**
+ * Access to /comment API.
+ * 
+ * @author bgamard
+ */
+public class CommentResource extends BaseResource {
+    /**
+     * GET /comment/id.
+     *
+     * @param context Context
+     * @param documentId Document ID
+     * @param responseHandler Callback
+     */
+    public static void list(Context context, String documentId, JsonHttpResponseHandler responseHandler) {
+        init(context);
+
+        client.get(getApiUrl(context) + "/comment/" + documentId, responseHandler);
+    }
+
+    /**
+     * Cancel pending requests.
+     *
+     * @param context Context
+     */
+    public static void cancel(Context context) {
+        client.cancelRequests(context, true);
+    }
+}