Basic logic for load more in comments fragments. Parts may be broken, still need to reload models on success

astrid/plugin-src/com/todoroo/astrid/actfm/CommentsFragment.java

@@ -15,6 +15,7 @@ import android.content.Intent;
 import android.content.res.Resources;
 import android.database.Cursor;
 import android.graphics.Bitmap;
+import android.graphics.Color;
 import android.os.Bundle;
 import android.text.Editable;
 import android.text.TextWatcher;
@@ -26,6 +27,7 @@ import android.view.View.OnClickListener;
 import android.view.View.OnTouchListener;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
+import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ImageButton;
 import android.widget.ListView;
@@ -62,6 +64,7 @@ public abstract class CommentsFragment extends SherlockListFragment {
     protected UpdateAdapter updateAdapter;
     protected EditText addCommentField;
     protected ViewGroup listHeader;
+    protected Button footerView = null;
 
     protected ImageButton pictureButton;
 
@@ -120,6 +123,10 @@ public abstract class CommentsFragment extends SherlockListFragment {
 
     protected abstract void performFetch(boolean manual, SyncMessageCallback done);
 
+    protected abstract boolean canLoadMoreHistory();
+
+    protected abstract void loadMoreHistory(int offset, SyncMessageCallback callback);
+
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
@@ -266,32 +273,47 @@ public abstract class CommentsFragment extends SherlockListFragment {
 
         if (activity instanceof CommentsActivity)
             setLastViewed();
+
+        if (footerView != null) {
+            listView.removeFooterView(footerView);
+            if (canLoadMoreHistory()) {
+                footerView = new Button(getActivity());
+                footerView.setText(R.string.TEA_load_more);
+                footerView.setBackgroundColor(Color.alpha(0));
+                footerView.setOnClickListener(new View.OnClickListener() {
+                    public void onClick(View v) {
+                        loadMoreHistory(0, doneRunnable);
+                    }
+                });
+            }
+        }
     }
 
     protected void setLastViewed() {
         //
     }
 
+    private final SyncMessageCallback doneRunnable = new SyncMessageCallback() {
+        @Override
+        public void runOnSuccess() {
+            synchronized (this) {
+                Activity activity = getActivity();
+                if (activity != null)
+                    activity.runOnUiThread(new Runnable() {
+                        @Override
+                        public void run() {
+                            refreshUpdatesList();
+                        }
+                    });
+            }
+        }
+
+        @Override
+        public void runOnErrors(List<JSONArray> errors) {/**/}
+    };
+
     protected void refreshActivity(boolean manual) {
         if (actFmPreferenceService.isLoggedIn()) {
-            SyncMessageCallback doneRunnable = new SyncMessageCallback() {
-                @Override
-                public void runOnSuccess() {
-                    synchronized (this) {
-                        Activity activity = getActivity();
-                        if (activity != null)
-                            activity.runOnUiThread(new Runnable() {
-                                @Override
-                                public void run() {
-                                    refreshUpdatesList();
-                                }
-                            });
-                    }
-                }
-
-                @Override
-                public void runOnErrors(List<JSONArray> errors) {/**/}
-            };
             if (hasModel()) {
                 performFetch(manual, doneRunnable);
             } else {

astrid/plugin-src/com/todoroo/astrid/actfm/TagCommentsFragment.java

@@ -88,6 +88,17 @@ public class TagCommentsFragment extends CommentsFragment {
         return (tagData == null) ? UpdateAdapter.FROM_RECENT_ACTIVITY_VIEW : UpdateAdapter.FROM_TAG_VIEW;
     }
 
+    @Override
+    protected boolean canLoadMoreHistory() {
+        return tagData.getValue(TagData.HISTORY_HAS_MORE) > 0;
+    }
+
+    @Override
+    protected void loadMoreHistory(int offset, SyncMessageCallback callback) {
+        new FetchHistory<TagData>(tagDataDao, TagData.HISTORY_FETCH_DATE, TagData.HISTORY_HAS_MORE, NameMaps.TABLE_ID_TAGS,
+                tagData.getUuid(), null, 0, offset, true, callback).execute();
+    }
+
     @Override
     protected void addHeaderToListView(ListView listView) {
         if (AstridPreferences.useTabletLayout(getActivity()) && tagData != null) {

astrid/plugin-src/com/todoroo/astrid/actfm/TaskCommentsFragment.java

@@ -79,6 +79,17 @@ public class TaskCommentsFragment extends CommentsFragment {
         // Do nothing
     }
 
+    @Override
+    protected boolean canLoadMoreHistory() {
+        return task.getValue(Task.HISTORY_HAS_MORE) > 0;
+    }
+
+    @Override
+    protected void loadMoreHistory(int offset, SyncMessageCallback callback) {
+        new FetchHistory<Task>(taskDao, Task.HISTORY_FETCH_DATE, Task.HISTORY_HAS_MORE, NameMaps.TABLE_ID_TASKS,
+                task.getUuid(), task.getValue(Task.TITLE), 0, offset, false, callback).execute();
+    }
+
     @Override
     protected void performFetch(boolean manual, SyncMessageCallback done) {
         if (task != null) {