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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*当前活动便签项
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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.model;
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//在model包中
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import android.appwidget.AppWidgetManager;//以下下为引用的一些库文件
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import android.content.ContentUris;
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import android.content.Context;
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import android.database.Cursor;//游标的使用
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import android.text.TextUtils;
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import android.util.Log;
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import net.micode.notes.data.Notes;//小米便签操作的整体属性
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import net.micode.notes.data.Notes.CallNote;
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import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.DataConstants;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.data.Notes.TextNote;
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import net.micode.notes.tool.ResourceParser.NoteBgResources;
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public class WorkingNote {
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// 申明WorkingNote类,创建小米便签的主要类，包括创建空便签，保存便签，加载小米便签内容，和设置小米便签的一些小部件之类的操作
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// Note for the working note
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// 下列定义了一系列变量用于设置便签的不同属性以及相关功能
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private Note mNote;
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// Note Id
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private long mNoteId;
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// Note content
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private String mContent;
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// Note mode
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private int mMode;
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// 是否是清单模式
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private long mAlertDate;
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// 设置闹钟时间
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private long mModifiedDate;
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// 最后修改时间
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private int mBgColorId;
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// 背景颜色ID
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private int mWidgetId;
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// 控件ID
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private int mWidgetType;
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// 控件类型，有Notes.TYPE_WIDGET_INVALIDE(-1)、TYPE_WIDGET_2X(0)、TYPE_WIDGET_4X(1)三种
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private long mFolderId;
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//// 便签文件夹ID
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private Context mContext;
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// 当前便签的上下文
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private static final String TAG = "WorkingNote";
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// .声明 DATA_PROJECTION字符串数组
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private boolean mIsDeleted;
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// 是否应该被删除
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private NoteSettingChangedListener mNoteSettingStatusListener;
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// 一个用来监听设置是否有变化的接口
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// 声明 DATA_PROJECTION字符串数组
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public static final String[] DATA_PROJECTION = new String[] {
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// 声明 NOTE_PROJECTION字符串数组
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DataColumns.ID,
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DataColumns.CONTENT,
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DataColumns.MIME_TYPE,
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DataColumns.DATA1,
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DataColumns.DATA2,
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DataColumns.DATA3,
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DataColumns.DATA4,
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};// 声明各个常量
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// 声明 NOTE_PROJECTION字符串数组
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public static final String[] NOTE_PROJECTION = new String[] {
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// 保存便签自身属性的字符串数组
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NoteColumns.PARENT_ID,
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NoteColumns.ALERTED_DATE,
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NoteColumns.BG_COLOR_ID,
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NoteColumns.WIDGET_ID,
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NoteColumns.WIDGET_TYPE,
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NoteColumns.MODIFIED_DATE
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};
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private static final int DATA_ID_COLUMN = 0;
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// 规定每一个数据类型在哪一行
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private static final int DATA_CONTENT_COLUMN = 1;
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private static final int DATA_MIME_TYPE_COLUMN = 2;
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private static final int DATA_MODE_COLUMN = 3;
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private static final int NOTE_PARENT_ID_COLUMN = 0;
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// 以下6个常量表示便签投影的0-5列
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private static final int NOTE_ALERTED_DATE_COLUMN = 1;
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private static final int NOTE_BG_COLOR_ID_COLUMN = 2;
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private static final int NOTE_WIDGET_ID_COLUMN = 3;
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private static final int NOTE_WIDGET_TYPE_COLUMN = 4;
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private static final int NOTE_MODIFIED_DATE_COLUMN = 5;
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/*
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* 作用：根据上下文和当前文件夹的ID，初始化当前编辑中的便签
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* 实现：设置便签有关属性的信息的初始值
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* 参数：@context：当前活动的上下文
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*
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* @folderId：当前文件夹的ID
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*/
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// New note construct
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public WorkingNote(Context context, long folderId) {
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mContext = context;
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mAlertDate = 0;
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mModifiedDate = System.currentTimeMillis();
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// 系统现在的时间,时间的表达格式为当前计算机时间和GMT时间(格林威治时间)1970年1月1号0时0分0秒所差的毫秒数
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mFolderId = folderId;
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// 默认最后一次修改日期为当前时间
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mNote = new Note();
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// 加载一个已存在的便签
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mNoteId = 0;
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mIsDeleted = false;
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// 没有提供id所以默认为0
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mMode = 0;
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mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
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// 默认是不可见
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}
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// WorkingNote的构造函数
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// Existing note construct
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private WorkingNote(Context context, long noteId, long folderId) {
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// 加载Note
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// 该方法初始化类里的各项变量
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mContext = context;
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// 调用query函数找到第一个条目
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mNoteId = noteId;
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mFolderId = folderId;
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mIsDeleted = false;
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mNote = new Note();
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loadNote();
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// 加载便签
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}
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// 加载Note
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// 通过数据库调用query函数找到第一个条目
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private void loadNote() {
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// 加载已有的便签
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Cursor cursor = mContext.getContentResolver().query(
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// 存在第一个条目
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ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mNoteId), NOTE_PROJECTION, null,
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null, null);
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// 若存在，储存相应信息
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if (cursor != null) {
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// 通过数据库调用query函数找到第一个条目
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if (cursor.moveToFirst()) {
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// moveToFirst：will return false if the cursor is empty
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mFolderId = cursor.getLong(NOTE_PARENT_ID_COLUMN);
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mBgColorId = cursor.getInt(NOTE_BG_COLOR_ID_COLUMN);// 关闭cursor游标
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mWidgetId = cursor.getInt(NOTE_WIDGET_ID_COLUMN);
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mWidgetType = cursor.getInt(NOTE_WIDGET_TYPE_COLUMN);
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mAlertDate = cursor.getLong(NOTE_ALERTED_DATE_COLUMN);
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mModifiedDate = cursor.getLong(NOTE_MODIFIED_DATE_COLUMN);
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}
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cursor.close();
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// 若不存在，报错
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} else {
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Log.e(TAG, "No note with id:" + mNoteId);
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throw new IllegalArgumentException("Unable to find note with id " + mNoteId);
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}
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loadNoteData();
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}
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// 加载NoteData
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private void loadNoteData() {
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Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
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DataColumns.NOTE_ID + "=?", new String[] {
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String.valueOf(mNoteId)
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}, null);
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if (cursor != null) {
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// 查到信息不为空
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if (cursor.moveToFirst()) { // 查看第一项是否存在
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do {
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String type = cursor.getString(DATA_MIME_TYPE_COLUMN);
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if (DataConstants.NOTE.equals(type)) {
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mContent = cursor.getString(DATA_CONTENT_COLUMN);
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mMode = cursor.getInt(DATA_MODE_COLUMN);
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mNote.setTextDataId(cursor.getLong(DATA_ID_COLUMN));
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} else if (DataConstants.CALL_NOTE.equals(type)) {
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mNote.setCallDataId(cursor.getLong(DATA_ID_COLUMN));
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} else {
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Log.d(TAG, "Wrong note type with type:" + type);
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}
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} while (cursor.moveToNext());// 查阅所有项,直到为空
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}
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cursor.close();
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} else {
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Log.e(TAG, "No data with id:" + mNoteId);
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throw new IllegalArgumentException("Unable to find note's data with id " + mNoteId);
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}
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}
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// 创建空的Note
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// 传参：context，文件夹id，widget，背景颜色
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public static WorkingNote createEmptyNote(Context context, long folderId, int widgetId,
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int widgetType, int defaultBgColorId) {
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WorkingNote note = new WorkingNote(context, folderId);
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// 设定相关属性
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note.setBgColorId(defaultBgColorId);
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note.setWidgetId(widgetId);
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note.setWidgetType(widgetType);
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return note;
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}
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public static WorkingNote load(Context context, long id) {
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return new WorkingNote(context, id, 0);
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}
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// 保存Note
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public synchronized boolean saveNote() {
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if (isWorthSaving()) { // 是否值得保存
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if (!existInDatabase()) { // 是否存在数据库中
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if ((mNoteId = Note.getNewNoteId(mContext, mFolderId)) == 0) {
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Log.e(TAG, "Create new note fail with id:" + mNoteId);
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return false;
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}
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}
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mNote.syncNote(mContext, mNoteId);
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/**
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* Update widget content if there exist any widget of this note
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*/
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if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
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&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE
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&& mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onWidgetChanged();
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}
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return true;
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} else {
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return false;
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}
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}
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// 是否在数据库中存在
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public boolean existInDatabase() {
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return mNoteId > 0;
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}
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// 是否值得保存
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private boolean isWorthSaving() {
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// 被删除，或（不在数据库中 内容为空），或 本地已保存过
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if (mIsDeleted || (!existInDatabase() && TextUtils.isEmpty(mContent))
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|| (existInDatabase() && !mNote.isLocalModified())) {
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return false;
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} else {
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return true;
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}
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}
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// 设置mNoteSettingStatusListener
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public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {
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mNoteSettingStatusListener = l;
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}
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// 设置AlertDate
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// 若 mAlertDate与data不同，则更改mAlertDate并设定NoteValue
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public void setAlertDate(long date, boolean set) {
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if (date != mAlertDate) {
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mAlertDate = date;
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mNote.setNoteValue(NoteColumns.ALERTED_DATE, String.valueOf(mAlertDate));
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}
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if (mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onClockAlertChanged(date, set);
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}
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}
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// 设定删除标记
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public void markDeleted(boolean mark) {
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// 设定标记
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mIsDeleted = mark;
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if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
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&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE && mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onWidgetChanged();
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// 调用mNoteSettingStatusListener的 onWidgetChanged方法
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}
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}
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// 设定背景颜色
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public void setBgColorId(int id) {
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if (id != mBgColorId) { // 设定条件 id != mBgColorId
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mBgColorId = id;
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if (mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onBackgroundColorChanged();
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}
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mNote.setNoteValue(NoteColumns.BG_COLOR_ID, String.valueOf(id));
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}
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}
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// 设定检查列表模式
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// 参数：mode
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public void setCheckListMode(int mode) {
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if (mMode != mode) { // 设定条件 mMode != mode
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if (mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onCheckListModeChanged(mMode, mode);
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}
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mMode = mode;
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mNote.setTextData(TextNote.MODE, String.valueOf(mMode));
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}
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}
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// 设定WidgetType
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// 参数：type
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public void setWidgetType(int type) {
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if (type != mWidgetType) {// 设定条件 type != mWidgetType
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mWidgetType = type;
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mNote.setNoteValue(NoteColumns.WIDGET_TYPE, String.valueOf(mWidgetType));
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// 调用Note的setNoteValue方法更改WidgetType
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}
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}
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// 设定WidgetId
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// 参数：id
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public void setWidgetId(int id) {
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if (id != mWidgetId) {// 设定条件 id != mWidgetId
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mWidgetId = id;
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mNote.setNoteValue(NoteColumns.WIDGET_ID, String.valueOf(mWidgetId));
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// 调用Note的setNoteValue方法更改WidgetId
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}
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}
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// 设定WorkingTex
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// 参数：更改的text
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public void setWorkingText(String text) {
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if (!TextUtils.equals(mContent, text)) {// 设定条件 mContent, text内容不同
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mContent = text;
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mNote.setTextData(DataColumns.CONTENT, mContent);
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// 调用Note的setTextData方法更改WorkingText
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}
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}
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// 转变mNote的CallData及CallNote信息
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// 参数：String phoneNumber, long callDate
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public void convertToCallNote(String phoneNumber, long callDate) {
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mNote.setCallData(CallNote.CALL_DATE, String.valueOf(callDate));
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mNote.setCallData(CallNote.PHONE_NUMBER, phoneNumber);
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mNote.setNoteValue(NoteColumns.PARENT_ID, String.valueOf(Notes.ID_CALL_RECORD_FOLDER));
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}
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// 判断是否有时钟题型
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public boolean hasClockAlert() {
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return (mAlertDate > 0 ? true : false);
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}
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// 获取Content
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public String getContent() {
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return mContent;
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}
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// 获取AlertDate
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public long getAlertDate() {
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return mAlertDate;
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}
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// 获取ModifiedDate
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public long getModifiedDate() {
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return mModifiedDate;
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}
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// 获取背景颜色来源id
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public int getBgColorResId() {
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return NoteBgResources.getNoteBgResource(mBgColorId);
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}
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// 获取背景颜色id
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public int getBgColorId() {
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return mBgColorId;
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}
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// 获取标题背景颜色id
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public int getTitleBgResId() {
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return NoteBgResources.getNoteTitleBgResource(mBgColorId);
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}
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// 获取CheckListMode
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public int getCheckListMode() {
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return mMode;
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}
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// 获取便签id
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public long getNoteId() {
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return mNoteId;
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}
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// 获取文件夹id
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public long getFolderId() {
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return mFolderId;
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}
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// 获取WidgetId
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public int getWidgetId() {
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return mWidgetId;
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}
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|
|
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// 获取WidgetType
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|
public int getWidgetType() {
|
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|
return mWidgetType;
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|
}
|
|
|
|
|
|
// 创建接口 NoteSettingChangedListener,便签更新监视
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|
|
// 为NoteEditActivity提供接口
|
|
|
// 提供函数有
|
|
|
public interface NoteSettingChangedListener {
|
|
|
/**
|
|
|
* Called when the background color of current note has just changed
|
|
|
*/
|
|
|
void onBackgroundColorChanged();
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|
|
|
|
|
/**
|
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|
* Called when user set clock
|
|
|
*/
|
|
|
void onClockAlertChanged(long date, boolean set);
|
|
|
|
|
|
/**
|
|
|
* Call when user create note from widget
|
|
|
*/
|
|
|
void onWidgetChanged();
|
|
|
|
|
|
/**
|
|
|
* Call when switch between check list mode and normal mode
|
|
|
*
|
|
|
* @param oldMode is previous mode before change
|
|
|
* @param newMode is new mode
|
|
|
*/
|
|
|
void onCheckListModeChanged(int oldMode, int newMode);
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|
|
}
|
|
|
}
|
