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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.data;
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import android.net.Uri;
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/**
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* 笔记应用的数据模型核心类
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* 定义了笔记、文件夹的数据结构、类型常量及内容提供者URI
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* 提供与数据库表结构对应的列定义和数据交互接口
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*/
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public class Notes {
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// 内容提供者的权限标识,用于Android组件间数据共享
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public static final String AUTHORITY = "micode_notes";
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public static final String TAG = "Notes";
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// 笔记类型常量(用于区分数据记录的类型)
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public static final int TYPE_NOTE = 0; // 普通笔记
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public static final int TYPE_FOLDER = 1; // 文件夹
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public static final int TYPE_SYSTEM = 2; // 系统文件夹
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/**
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* 系统文件夹标识符(特殊用途的文件夹ID)
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* ID_ROOT_FOLDER:默认根文件夹
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* ID_TEMPARAY_FOLDER:临时文件夹(不属于任何文件夹的笔记)
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* ID_CALL_RECORD_FOLDER:通话记录专用文件夹
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* ID_TRASH_FOLER:回收站文件夹
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*/
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public static final int ID_ROOT_FOLDER = 0;
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public static final int ID_TEMPARAY_FOLDER = -1;
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public static final int ID_CALL_RECORD_FOLDER = -2;
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public static final int ID_TRASH_FOLER = -3;
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// 意图传递的额外数据键名(用于Activity间数据传递)
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public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date"; // 提醒日期
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public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id"; // 背景颜色ID
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public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id"; // 小部件ID
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public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type"; // 小部件类型
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public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id"; // 文件夹ID
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public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date"; // 通话日期
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// 桌面小部件类型常量
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public static final int TYPE_WIDGET_INVALIDE = -1; // 无效类型
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public static final int TYPE_WIDGET_2X = 0; // 2x尺寸小部件
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public static final int TYPE_WIDGET_4X = 1; // 4x尺寸小部件
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/**
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* 数据类型常量(用于标识笔记内容的格式)
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*/
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public static class DataConstants {
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public static final String NOTE = TextNote.CONTENT_ITEM_TYPE; // 文本笔记类型
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public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE; // 通话记录类型
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}
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/**
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* 所有笔记和文件夹的查询URI(内容提供者访问入口)
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*/
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public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
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/**
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* 笔记内容数据的查询URI(用于访问具体笔记内容)
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*/
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public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
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/**
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* 笔记表结构列定义接口
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* 对应数据库中note表的字段定义
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*/
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public interface NoteColumns {
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/** 记录唯一ID */
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public static final String ID = "_id";
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/** 父节点ID(笔记所属文件夹或父笔记ID) */
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public static final String PARENT_ID = "parent_id";
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/** 创建日期(时间戳) */
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public static final String CREATED_DATE = "created_date";
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/** 最后修改日期(时间戳) */
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public static final String MODIFIED_DATE = "modified_date";
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/** 提醒日期(时间戳) */
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public static final String ALERTED_DATE = "alert_date";
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/** 文件夹名称或笔记摘要 */
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public static final String SNIPPET = "snippet";
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/** 笔记关联的桌面小部件ID */
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public static final String WIDGET_ID = "widget_id";
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/** 桌面小部件类型(2x或4x) */
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public static final String WIDGET_TYPE = "widget_type";
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/** 笔记背景颜色ID */
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public static final String BG_COLOR_ID = "bg_color_id";
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/** 是否包含附件(1表示有附件,0表示无) */
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public static final String HAS_ATTACHMENT = "has_attachment";
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/** 文件夹中的笔记数量 */
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public static final String NOTES_COUNT = "notes_count";
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/** 记录类型(普通笔记、文件夹或系统文件夹) */
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public static final String TYPE = "type";
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/** 最后同步ID(用于数据同步版本控制) */
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public static final String SYNC_ID = "sync_id";
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/** 本地修改标记(1表示已修改,0表示未修改) */
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public static final String LOCAL_MODIFIED = "local_modified";
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/** Google Tasks任务ID(用于与Google Tasks同步) */
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public static final String GTASK_ID = "gtask_id";
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/** 版本号(用于并发更新控制) */
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public static final String VERSION = "version";
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}
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/**
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* 笔记内容表结构列定义接口
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* 对应数据库中data表的字段定义,存储笔记具体内容
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*/
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public interface DataColumns {
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/** 记录唯一ID */
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public static final String ID = "_id";
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/** 数据MIME类型(标识笔记内容格式) */
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public static final String MIME_TYPE = "mime_type";
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/** 所属笔记ID(关联到note表的ID) */
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public static final String NOTE_ID = "note_id";
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/** 创建日期(时间戳) */
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public static final String CREATED_DATE = "created_date";
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/** 最后修改日期(时间戳) */
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public static final String MODIFIED_DATE = "modified_date";
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/** 数据内容(文本笔记的正文或其他类型数据) */
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public static final String CONTENT = "content";
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/** 扩展数据字段1 */
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public static final String DATA1 = "data1";
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/** 扩展数据字段2 */
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public static final String DATA2 = "data2";
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/** 扩展数据字段3 */
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public static final String DATA3 = "data3";
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/** 扩展数据字段4 */
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public static final String DATA4 = "data4";
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/** 扩展数据字段5 */
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public static final String DATA5 = "data5";
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}
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/**
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* 文本笔记数据类
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* 继承DataColumns接口,定义文本笔记特有的字段
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*/
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public static final class TextNote implements DataColumns {
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/** 笔记模式(1表示清单模式,0表示普通模式) */
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public static final String MODE = DATA1;
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public static final int MODE_CHECK_LIST = 1; // 清单模式标识
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/** 内容集合类型(用于内容提供者) */
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public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note";
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/** 内容项类型(用于内容提供者) */
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public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";
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/** 内容URI(用于访问文本笔记数据) */
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public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
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}
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/**
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* 通话记录笔记数据类
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* 继承DataColumns接口,定义通话记录特有的字段
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*/
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public static final class CallNote implements DataColumns {
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/** 通话日期(时间戳) */
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public static final String CALL_DATE = DATA1;
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/** 电话号码 */
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public static final String PHONE_NUMBER = DATA3;
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/** 内容集合类型(用于内容提供者) */
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public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";
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/** 内容项类型(用于内容提供者) */
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public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";
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/** 内容URI(用于访问通话记录数据) */
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public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");
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}
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} |