TaskList.java

    /*
     * 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;
        }
    }