diff --git a/TaskList.java b/TaskList.java
deleted file mode 100644
index 4ea21c5..0000000
--- a/TaskList.java
+++ /dev/null
@@ -1,343 +0,0 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * 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 net.micode.notes.gtask.data;
-
-import android.database.Cursor;
-import android.util.Log;
-
-import net.micode.notes.data.Notes;
-import net.micode.notes.data.Notes.NoteColumns;
-import net.micode.notes.gtask.exception.ActionFailureException;
-import net.micode.notes.tool.GTaskStringUtils;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-import java.util.ArrayList;
-
-
-public class TaskList extends Node {
-    private static final String TAG = TaskList.class.getSimpleName();
-
-    private int mIndex;
-
-    private ArrayList<Task> mChildren;
-
-    public TaskList() {
-        super();
-        mChildren = new ArrayList<Task>();
-        mIndex = 1;
-    }
-
-    public JSONObject getCreateAction(int actionId) {
-        JSONObject js = new JSONObject();
-
-        try {
-            // action_type
-            js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
-                    GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
-
-            // action_id
-            js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
-
-            // index
-            js.put(GTaskStringUtils.GTASK_JSON_INDEX, mIndex);
-
-            // entity_delta
-            JSONObject entity = new JSONObject();
-            entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
-            entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
-            entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
-                    GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
-            js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
-
-        } catch (JSONException e) {
-            Log.e(TAG, e.toString());
-            e.printStackTrace();
-            throw new ActionFailureException("fail to generate tasklist-create jsonobject");
-        }
-
-        return js;
-    }
-
-    public JSONObject getUpdateAction(int actionId) {
-        JSONObject js = new JSONObject();
-
-        try {
-            // action_type
-            js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
-                    GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
-
-            // action_id
-            js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
-
-            // id
-            js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
-
-            // entity_delta
-            JSONObject entity = new JSONObject();
-            entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
-            entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
-            js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
-
-        } catch (JSONException e) {
-            Log.e(TAG, e.toString());
-            e.printStackTrace();
-            throw new ActionFailureException("fail to generate tasklist-update jsonobject");
-        }
-
-        return js;
-    }
-
-    public void setContentByRemoteJSON(JSONObject js) {
-        if (js != null) {
-            try {
-                // id
-                if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
-                    setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
-                }
-
-                // last_modified
-                if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
-                    setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
-                }
-
-                // name
-                if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
-                    setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
-                }
-
-            } catch (JSONException e) {
-                Log.e(TAG, e.toString());
-                e.printStackTrace();
-                throw new ActionFailureException("fail to get tasklist content from jsonobject");
-            }
-        }
-    }
-
-    public void setContentByLocalJSON(JSONObject js) {
-        if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)) {
-            Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
-        }
-
-        try {
-            JSONObject folder = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
-
-            if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
-                String name = folder.getString(NoteColumns.SNIPPET);
-                setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + name);
-            } else if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
-                if (folder.getLong(NoteColumns.ID) == Notes.ID_ROOT_FOLDER)
-                    setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT);
-                else if (folder.getLong(NoteColumns.ID) == Notes.ID_CALL_RECORD_FOLDER)
-                    setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
-                            + GTaskStringUtils.FOLDER_CALL_NOTE);
-                else
-                    Log.e(TAG, "invalid system folder");
-            } else {
-                Log.e(TAG, "error type");
-            }
-        } catch (JSONException e) {
-            Log.e(TAG, e.toString());
-            e.printStackTrace();
-        }
-    }
-
-    public JSONObject getLocalJSONFromContent() {
-        try {
-            JSONObject js = new JSONObject();
-            JSONObject folder = new JSONObject();
-
-            String folderName = getName();
-            if (getName().startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX))
-                folderName = folderName.substring(GTaskStringUtils.MIUI_FOLDER_PREFFIX.length(),
-                        folderName.length());
-            folder.put(NoteColumns.SNIPPET, folderName);
-            if (folderName.equals(GTaskStringUtils.FOLDER_DEFAULT)
-                    || folderName.equals(GTaskStringUtils.FOLDER_CALL_NOTE))
-                folder.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
-            else
-                folder.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
-
-            js.put(GTaskStringUtils.META_HEAD_NOTE, folder);
-
-            return js;
-        } catch (JSONException e) {
-            Log.e(TAG, e.toString());
-            e.printStackTrace();
-            return null;
-        }
-    }
-
-    public int getSyncAction(Cursor c) {
-        try {
-            if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
-                // there is no local update
-                if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
-                    // no update both side
-                    return SYNC_ACTION_NONE;
-                } else {
-                    // apply remote to local
-                    return SYNC_ACTION_UPDATE_LOCAL;
-                }
-            } else {
-                // validate gtask id
-                if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
-                    Log.e(TAG, "gtask id doesn't match");
-                    return SYNC_ACTION_ERROR;
-                }
-                if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
-                    // local modification only
-                    return SYNC_ACTION_UPDATE_REMOTE;
-                } else {
-                    // for folder conflicts, just apply local modification
-                    return SYNC_ACTION_UPDATE_REMOTE;
-                }
-            }
-        } catch (Exception e) {
-            Log.e(TAG, e.toString());
-            e.printStackTrace();
-        }
-
-        return SYNC_ACTION_ERROR;
-    }
-
-    public int getChildTaskCount() {
-        return mChildren.size();
-    }
-
-    public boolean addChildTask(Task task) {
-        boolean ret = false;
-        if (task != null && !mChildren.contains(task)) {
-            ret = mChildren.add(task);
-            if (ret) {
-                // need to set prior sibling and parent
-                task.setPriorSibling(mChildren.isEmpty() ? null : mChildren
-                        .get(mChildren.size() - 1));
-                task.setParent(this);
-            }
-        }
-        return ret;
-    }
-
-    public boolean addChildTask(Task task, int index) {
-        if (index < 0 || index > mChildren.size()) {
-            Log.e(TAG, "add child task: invalid index");
-            return false;
-        }
-
-        int pos = mChildren.indexOf(task);
-        if (task != null && pos == -1) {
-            mChildren.add(index, task);
-
-            // update the task list
-            Task preTask = null;
-            Task afterTask = null;
-            if (index != 0)
-                preTask = mChildren.get(index - 1);
-            if (index != mChildren.size() - 1)
-                afterTask = mChildren.get(index + 1);
-
-            task.setPriorSibling(preTask);
-            if (afterTask != null)
-                afterTask.setPriorSibling(task);
-        }
-
-        return true;
-    }
-
-    public boolean removeChildTask(Task task) {
-        boolean ret = false;
-        int index = mChildren.indexOf(task);
-        if (index != -1) {
-            ret = mChildren.remove(task);
-
-            if (ret) {
-                // reset prior sibling and parent
-                task.setPriorSibling(null);
-                task.setParent(null);
-
-                // update the task list
-                if (index != mChildren.size()) {
-                    mChildren.get(index).setPriorSibling(
-                            index == 0 ? null : mChildren.get(index - 1));
-                }
-            }
-        }
-        return ret;
-    }
-
-    public boolean moveChildTask(Task task, int index) {
-
-        if (index < 0 || index >= mChildren.size()) {
-            Log.e(TAG, "move child task: invalid index");
-            return false;
-        }
-
-        int pos = mChildren.indexOf(task);
-        if (pos == -1) {
-            Log.e(TAG, "move child task: the task should in the list");
-            return false;
-        }
-
-        if (pos == index)
-            return true;
-        return (removeChildTask(task) && addChildTask(task, index));
-    }
-
-    public Task findChildTaskByGid(String gid) {
-        for (int i = 0; i < mChildren.size(); i++) {
-            Task t = mChildren.get(i);
-            if (t.getGid().equals(gid)) {
-                return t;
-            }
-        }
-        return null;
-    }
-
-    public int getChildTaskIndex(Task task) {
-        return mChildren.indexOf(task);
-    }
-
-    public Task getChildTaskByIndex(int index) {
-        if (index < 0 || index >= mChildren.size()) {
-            Log.e(TAG, "getTaskByIndex: invalid index");
-            return null;
-        }
-        return mChildren.get(index);
-    }
-
-    public Task getChilTaskByGid(String gid) {
-        for (Task task : mChildren) {
-            if (task.getGid().equals(gid))
-                return task;
-        }
-        return null;
-    }
-
-    public ArrayList<Task> getChildTaskList() {
-        return this.mChildren;
-    }
-
-    public void setIndex(int index) {
-        this.mIndex = index;
-    }
-
-    public int getIndex() {
-        return this.mIndex;
-    }
-}