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WorkingNote.java
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/*
* 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.model;
import android.appwidget.AppWidgetManager;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.text.TextUtils;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.CallNote;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.data.Notes.TextNote;
import net.micode.notes.tool.ResourceParser.NoteBgResources;
/**
* 工作笔记管理类：处理笔记的创建、加载、保存及状态管理
* 封装笔记的编辑状态和业务逻辑，关联Widget和提醒功能
*/
public class WorkingNote {
// 关联的基础笔记模型
private Note mNote;
// 笔记ID
private long mNoteId;
// 笔记内容
private String mContent;
// 笔记模式（普通/待办清单）
private int mMode;
// 提醒时间
private long mAlertDate;
// 最后修改时间
private long mModifiedDate;
// 背景颜色ID
private int mBgColorId;
// Widget ID
private int mWidgetId;
// Widget类型
private int mWidgetType;
// 所属文件夹ID
private long mFolderId;
// 应用上下文
private Context mContext;
// 日志标签
private static final String TAG = "WorkingNote";
// 标记是否已删除
private boolean mIsDeleted;
// 笔记设置变更监听器
private NoteSettingChangedListener mNoteSettingStatusListener;
// 数据查询投影（指定查询的列）
public static final String[] DATA_PROJECTION = new String[] {
DataColumns.ID,
DataColumns.CONTENT,
DataColumns.MIME_TYPE,
DataColumns.DATA1,
DataColumns.DATA2,
DataColumns.DATA3,
DataColumns.DATA4,
};
// 笔记查询投影
public static final String[] NOTE_PROJECTION = new String[] {
NoteColumns.PARENT_ID, // 所属文件夹ID
NoteColumns.ALERTED_DATE, // 提醒时间
NoteColumns.BG_COLOR_ID, // 背景颜色ID
NoteColumns.WIDGET_ID, // Widget ID
NoteColumns.WIDGET_TYPE, // Widget类型
NoteColumns.MODIFIED_DATE // 最后修改时间
};
// 列索引常量（提高代码可读性）
private static final int DATA_ID_COLUMN = 0;
private static final int DATA_CONTENT_COLUMN = 1;
private static final int DATA_MIME_TYPE_COLUMN = 2;
private static final int DATA_MODE_COLUMN = 3;
private static final int NOTE_PARENT_ID_COLUMN = 0;
private static final int NOTE_ALERTED_DATE_COLUMN = 1;
private static final int NOTE_BG_COLOR_ID_COLUMN = 2;
private static final int NOTE_WIDGET_ID_COLUMN = 3;
private static final int NOTE_WIDGET_TYPE_COLUMN = 4;
private static final int NOTE_MODIFIED_DATE_COLUMN = 5;
/**
* 新建笔记构造函数
* @param context 应用上下文
* @param folderId 所属文件夹ID
*/
private WorkingNote(Context context, long folderId) {
mContext = context;
mAlertDate = 0;
mModifiedDate = System.currentTimeMillis();
mFolderId = folderId;
mNote = new Note();
mNoteId = 0;
mIsDeleted = false;
mMode = 0;
mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
}
/**
* 加载现有笔记构造函数
* @param context 应用上下文
* @param noteId 笔记ID
* @param folderId 所属文件夹ID
*/
private WorkingNote(Context context, long noteId, long folderId) {
mContext = context;
mNoteId = noteId;
mFolderId = folderId;
mIsDeleted = false;
mNote = new Note();
loadNote(); // 加载笔记基础信息
}
/**
* 从数据库加载笔记基础信息
*/
private void loadNote() {
// 查询笔记基础信息
Cursor cursor = mContext.getContentResolver().query(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mNoteId), NOTE_PROJECTION, null,
null, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
// 解析查询结果并赋值给成员变量
mFolderId = cursor.getLong(NOTE_PARENT_ID_COLUMN);
mBgColorId = cursor.getInt(NOTE_BG_COLOR_ID_COLUMN);
mWidgetId = cursor.getInt(NOTE_WIDGET_ID_COLUMN);
mWidgetType = cursor.getInt(NOTE_WIDGET_TYPE_COLUMN);
mAlertDate = cursor.getLong(NOTE_ALERTED_DATE_COLUMN);
mModifiedDate = cursor.getLong(NOTE_MODIFIED_DATE_COLUMN);
}
cursor.close();
} else {
Log.e(TAG, "No note with id:" + mNoteId);
throw new IllegalArgumentException("Unable to find note with id " + mNoteId);
}
loadNoteData(); // 加载笔记详细数据
}
/**
* 加载笔记详细数据（内容、类型等）
*/
private void loadNoteData() {
// 查询笔记关联的数据
Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
DataColumns.NOTE_ID + "=?", new String[] {
String.valueOf(mNoteId)
}, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
do {
String type = cursor.getString(DATA_MIME_TYPE_COLUMN);
if (DataConstants.NOTE.equals(type)) {
// 普通文本笔记
mContent = cursor.getString(DATA_CONTENT_COLUMN);
mMode = cursor.getInt(DATA_MODE_COLUMN);
mNote.setTextDataId(cursor.getLong(DATA_ID_COLUMN));
} else if (DataConstants.CALL_NOTE.equals(type)) {
// 通话笔记
mNote.setCallDataId(cursor.getLong(DATA_ID_COLUMN));
} else {
Log.d(TAG, "Wrong note type with type:" + type);
}
} while (cursor.moveToNext());
}
cursor.close();
} else {
Log.e(TAG, "No data with id:" + mNoteId);
throw new IllegalArgumentException("Unable to find note's data with id " + mNoteId);
}
}
/**
* 创建空笔记的工厂方法
* @param context 应用上下文
* @param folderId 所属文件夹ID
* @param widgetId Widget ID
* @param widgetType Widget类型
* @param defaultBgColorId 默认背景颜色ID
* @return 新创建的WorkingNote实例
*/
public static WorkingNote createEmptyNote(Context context, long folderId, int widgetId,
int widgetType, int defaultBgColorId) {
WorkingNote note = new WorkingNote(context, folderId);
note.setBgColorId(defaultBgColorId);
note.setWidgetId(widgetId);
note.setWidgetType(widgetType);
return note;
}
/**
* 加载现有笔记的工厂方法
* @param context 应用上下文
* @param id 笔记ID
* @return 加载的WorkingNote实例
*/
public static WorkingNote load(Context context, long id) {
return new WorkingNote(context, id, 0);
}
/**
* 保存笔记到数据库
* @return 保存结果
*/
public synchronized boolean saveNote() {
if (isWorthSaving()) { // 判断是否需要保存
if (!existInDatabase()) { // 新建笔记场景
if ((mNoteId = Note.getNewNoteId(mContext, mFolderId)) == 0) {
Log.e(TAG, "Create new note fail with id:" + mNoteId);
return false;
}
}
mNote.syncNote(mContext, mNoteId); // 同步笔记数据
/**
* 如果存在关联的Widget，则通知更新
*/
if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE
&& mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onWidgetChanged();
}
return true;
} else {
return false;
}
}
/**
* 判断笔记是否已存在于数据库
*/
public boolean existInDatabase() {
return mNoteId > 0;
}
/**
* 判断是否值得保存（避免无效保存）
*/
private boolean isWorthSaving() {
if (mIsDeleted || (!existInDatabase() && TextUtils.isEmpty(mContent))
|| (existInDatabase() && !mNote.isLocalModified())) {
return false;
} else {
return true;
}
}
/**
* 设置笔记设置变更监听器
*/
public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {
mNoteSettingStatusListener = l;
}
/**
* 设置提醒时间
* @param date 提醒时间戳
* @param set 是否设置提醒
*/
public void setAlertDate(long date, boolean set) {
if (date != mAlertDate) {
mAlertDate = date;
mNote.setNoteValue(NoteColumns.ALERTED_DATE, String.valueOf(mAlertDate));
}
// 通知监听器提醒时间已变更
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onClockAlertChanged(date, set);
}
}
// 以下为各种属性的设置方法（带变更检测和通知）
public void markDeleted(boolean mark) {
mIsDeleted = mark;
if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE && mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onWidgetChanged();
}
}
public void setBgColorId(int id) {
if (id != mBgColorId) {
mBgColorId = id;
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onBackgroundColorChanged();
}
mNote.setNoteValue(NoteColumns.BG_COLOR_ID, String.valueOf(id));
}
}
public void setCheckListMode(int mode) {
if (mMode != mode) {
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onCheckListModeChanged(mMode, mode);
}
mMode = mode;
mNote.setTextData(TextNote.MODE, String.valueOf(mMode));
}
}
public void setWidgetType(int type) {
if (type != mWidgetType) {
mWidgetType = type;
mNote.setNoteValue(NoteColumns.WIDGET_TYPE, String.valueOf(mWidgetType));
}
}
public void setWidgetId(int id) {
if (id != mWidgetId) {
mWidgetId = id;
mNote.setNoteValue(NoteColumns.WIDGET_ID, String.valueOf(mWidgetId));
}
}
public void setWorkingText(String text) {
if (!TextUtils.equals(mContent, text)) {
mContent = text;
mNote.setTextData(DataColumns.CONTENT, mContent);
}
}
/**
* 将文本笔记转换为通话笔记
* @param phoneNumber 电话号码
* @param callDate 通话时间
*/
public void convertToCallNote(String phoneNumber, long callDate) {
mNote.setCallData(CallNote.CALL_DATE, String.valueOf(callDate));
mNote.setCallData(CallNote.PHONE_NUMBER, phoneNumber);
// 更改所属文件夹为通话记录文件夹
mNote.setNoteValue(NoteColumns.PARENT_ID, String.valueOf(Notes.ID_CALL_RECORD_FOLDER));
}
// 以下为各种属性的获取方法
public boolean hasClockAlert() {
return (mAlertDate > 0 ? true : false);
}
public String getContent() {
return mContent;
}
public long getAlertDate() {
return mAlertDate;
}
public long getModifiedDate() {
return mModifiedDate;
}
public int getBgColorResId() {
return NoteBgResources.getNoteBgResource(mBgColorId);
}
public int getBgColorId() {
return mBgColorId;
}
public int getTitleBgResId() {
return NoteBgResources.getNoteTitleBgResource(mBgColorId);
}
public int getCheckListMode() {
return mMode;
}
public long getNoteId() {
return mNoteId;
}
public long getFolderId() {
return mFolderId;
}
public int getWidgetId() {
return mWidgetId;
}
public int getWidgetType() {
return mWidgetType;
}
/**
* 笔记设置变更监听器接口
* 定义笔记属性变更时的回调方法
*/
public interface NoteSettingChangedListener {
/**
* 背景颜色变更时回调
*/
void onBackgroundColorChanged();
/**
* 提醒时间变更时回调
*/
void onClockAlertChanged(long date, boolean set);
/**
* Widget状态变更时回调
*/
void onWidgetChanged();
/**
* 待办清单模式变更时回调
*/
void onCheckListModeChanged(int oldMode, int newMode);
}
}
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