Fire back to acitivity when Gist loads

Ensures the avatar is updated when the Gist is initially
opened with just an id and then a full load begins

Author: kevinsawicki

app/src/main/java/com/github/mobile/core/OnLoadListener.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2012 GitHub Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.mobile.core;
+
+/**
+ * Load listener callback
+ *
+ * @param <V>
+ */
+public interface OnLoadListener<V> {
+
+  /**
+   * Loaded callback
+   *
+   * @param data
+   */
+  void loaded(V data);
+}

app/src/main/java/com/github/mobile/ui/gist/GistFragment.java

@@ -25,6 +25,7 @@
 import android.content.Intent;
 import android.graphics.Typeface;
 import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -44,6 +45,7 @@
 import com.github.mobile.R.menu;
 import com.github.mobile.R.string;
 import com.github.mobile.accounts.AccountUtils;
+import com.github.mobile.core.OnLoadListener;
 import com.github.mobile.core.gist.FullGist;
 import com.github.mobile.core.gist.GistStore;
 import com.github.mobile.core.gist.RefreshGistTask;
@@ -387,13 +389,19 @@ protected void onException(Exception e) throws RuntimeException {
                 ToastUtils.show(getActivity(), e, string.error_gist_load);
             }
 
+            @SuppressWarnings("unchecked")
             @Override
             protected void onSuccess(FullGist fullGist) throws Exception {
                 super.onSuccess(fullGist);
 
                 if (!isUsable())
                     return;
 
+                FragmentActivity activity = getActivity();
+                if (activity instanceof OnLoadListener)
+                    ((OnLoadListener<Gist>) activity)
+                            .loaded(fullGist.getGist());
+
                 starred = fullGist.isStarred();
                 loadFinished = true;
                 gist = fullGist.getGist();

app/src/main/java/com/github/mobile/ui/gist/GistsViewActivity.java

@@ -31,6 +31,7 @@
 import com.github.mobile.R.id;
 import com.github.mobile.R.layout;
 import com.github.mobile.R.string;
+import com.github.mobile.core.OnLoadListener;
 import com.github.mobile.core.gist.GistStore;
 import com.github.mobile.ui.ConfirmDialogFragment;
 import com.github.mobile.ui.FragmentProvider;
@@ -48,7 +49,8 @@
 /**
  * Activity to display a collection of Gists in a pager
  */
-public class GistsViewActivity extends PagerActivity {
+public class GistsViewActivity extends PagerActivity implements
+        OnLoadListener<Gist> {
 
     private static final int REQUEST_CONFIRM_DELETE = 1;
 
@@ -166,9 +168,27 @@ public void onDialogResult(int requestCode, int resultCode, Bundle arguments) {
     public void onPageSelected(int position) {
         super.onPageSelected(position);
 
-        ActionBar actionBar = getSupportActionBar();
         String gistId = gists[position];
         Gist gist = store.getGist(gistId);
+        updateActionBar(gist, gistId);
+    }
+
+    @Override
+    public void startActivity(Intent intent) {
+        Intent converted = urlLauncher.convert(intent);
+        if (converted != null)
+            super.startActivity(converted);
+        else
+            super.startActivity(intent);
+    }
+
+    @Override
+    protected FragmentProvider getProvider() {
+        return adapter;
+    }
+
+    private void updateActionBar(Gist gist, String gistId) {
+        ActionBar actionBar = getSupportActionBar();
         if (gist == null) {
             actionBar.setSubtitle(null);
             actionBar.setLogo(null);
@@ -185,16 +205,8 @@ public void onPageSelected(int position) {
     }
 
     @Override
-    public void startActivity(Intent intent) {
-        Intent converted = urlLauncher.convert(intent);
-        if (converted != null)
-            super.startActivity(converted);
-        else
-            super.startActivity(intent);
-    }
-
-    @Override
-    protected FragmentProvider getProvider() {
-        return adapter;
+    public void loaded(Gist gist) {
+        if (gists[pager.getCurrentItem()].equals(gist.getId()))
+            updateActionBar(gist, gist.getId());
     }
 }