You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
flutter_custom_calendar/lib/controller.dart

586 lines
19 KiB

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

import 'dart:collection';
import 'package:flutter/material.dart';
import 'package:flutter_custom_calendar/calendar_provider.dart';
import 'package:flutter_custom_calendar/configuration.dart';
import 'package:flutter_custom_calendar/constants/constants.dart';
import 'package:flutter_custom_calendar/model/date_model.dart';
import 'package:flutter_custom_calendar/utils/LogUtil.dart';
import 'package:flutter_custom_calendar/utils/date_util.dart';
import 'package:flutter_custom_calendar/widget/default_combine_day_view.dart';
import 'package:flutter_custom_calendar/widget/default_custom_day_view.dart';
import 'package:flutter_custom_calendar/widget/default_week_bar.dart';
/**
* 利用controller来控制视图
*/
class CalendarController {
static const Set<DateTime> EMPTY_SET = {};
static const Map<DateModel, Object> EMPTY_MAP = {};
static const Duration DEFAULT_DURATION = const Duration(milliseconds: 500);
CalendarConfiguration calendarConfiguration;
CalendarProvider calendarProvider = CalendarProvider();
/**
* 下面的信息不是配置的
*/
List<DateModel> monthList = new List(); //月份list
List<DateModel> weekList = new List(); //星期list
PageController monthController; //月份的controller
PageController weekController; //星期的controller
CalendarController(
{int selectMode = CalendarConstants.MODE_SINGLE_SELECT,
int showMode = CalendarConstants.MODE_SHOW_ONLY_MONTH,
int minYear = 1971,
int maxYear = 2055,
int minYearMonth = 1,
int maxYearMonth = 12,
int nowYear,
int nowMonth,
int minSelectYear = 1971,
int minSelectMonth = 1,
int minSelectDay = 1,
int maxSelectYear = 2055,
int maxSelectMonth = 12,
int maxSelectDay = 30,
Set<DateTime> selectedDateTimeList = EMPTY_SET, //多选模式下默认选中的item列表
DateModel selectDateModel, //单选模式下默认选中的item
int maxMultiSelectCount = 9999,
Map<DateModel, Object> extraDataMap = EMPTY_MAP}) {
LogUtil.log(TAG: this.runtimeType, message: "init CalendarConfiguration");
//如果没有指定当前月份和年份,默认是当年时间
if (nowYear == null) {
nowYear = DateTime.now().year;
}
if (nowMonth == null) {
nowMonth = DateTime.now().month;
}
calendarConfiguration = CalendarConfiguration(
selectMode: selectMode,
showMode: showMode,
minYear: minYear,
maxYear: maxYear,
maxYearMonth: maxYearMonth,
nowYear: nowYear,
nowMonth: nowMonth,
minSelectYear: minSelectYear,
minSelectMonth: minSelectMonth,
minYearMonth: minYearMonth,
minSelectDay: minSelectDay,
maxSelectYear: maxSelectYear,
maxSelectMonth: maxSelectMonth,
extraDataMap: extraDataMap,
maxSelectDay: maxSelectDay,
maxMultiSelectCount: maxMultiSelectCount,
selectDateModel: selectDateModel);
calendarConfiguration.defaultSelectedDateList = new HashSet<DateModel>();
calendarConfiguration.defaultSelectedDateList
.addAll(selectedDateTimeList.map((dateTime) {
return DateModel.fromDateTime(dateTime);
}).toSet());
//将默认选中的数据放到provider中
calendarProvider.selectDateModel = selectDateModel;
calendarProvider.selectedDateList =
calendarConfiguration.defaultSelectedDateList;
calendarConfiguration.minSelectDate = DateModel.fromDateTime(DateTime(
calendarConfiguration.minSelectYear,
calendarConfiguration.minSelectMonth,
calendarConfiguration.minSelectDay));
calendarConfiguration.maxSelectDate = DateModel.fromDateTime(DateTime(
calendarConfiguration.maxSelectYear,
calendarConfiguration.maxSelectMonth,
calendarConfiguration.maxSelectDay));
LogUtil.log(
TAG: this.runtimeType,
message: "start:${DateModel.fromDateTime(DateTime(
minYear,
minYearMonth,
))},end:${DateModel.fromDateTime(DateTime(
maxYear,
maxYearMonth,
))}");
if (showMode != CalendarConstants.MODE_SHOW_ONLY_WEEK) {
//初始化pageController,initialPage默认是当前时间对于的页面
int initialPage = 0;
int nowMonthIndex = 0;
monthList.clear();
for (int i = minYear; i <= maxYear; i++) {
for (int j = 1; j <= 12; j++) {
if (i == minYear && j < minYearMonth) {
continue;
}
if (i == maxYear && j > maxYearMonth) {
continue;
}
DateModel dateModel = new DateModel();
dateModel.year = i;
dateModel.month = j;
if (i == nowYear && j == nowMonth) {
initialPage = nowMonthIndex;
}
monthList.add(dateModel);
nowMonthIndex++;
}
}
this.monthController =
new PageController(initialPage: initialPage, keepPage: true);
LogUtil.log(
TAG: this.runtimeType,
message:
"初始化月份视图的信息:一共有${monthList.length}个月initialPage为$nowMonthIndex");
}
if (showMode != CalendarConstants.MODE_SHOW_ONLY_MONTH) {
//计算一共多少周
//计算方法:第一天是周几,最后一天是周几,中间的天数/7后加上2就是结果了
int initialWeekPage = 0;
weekList.clear();
//如果没有配置当前时间,设置成当前的时间
if (nowYear == -1 || nowMonth == -1) {
nowYear = DateTime.now().year;
nowMonth = DateTime.now().month;
}
DateTime nowTime = new DateTime(nowYear, nowMonth, 15);
DateTime firstDayOfMonth = DateTime(minYear, minYearMonth, 1);
//计算第一个星期的第一天的日期
DateTime firstWeekDate =
firstDayOfMonth.add(Duration(days: -(firstDayOfMonth.weekday - 1)));
DateTime lastDay = DateTime(maxYear, maxYearMonth,
DateUtil.getMonthDaysCount(maxYear, maxYearMonth));
int temp = -1;
for (DateTime dateTime = firstWeekDate;
!dateTime.isAfter(lastDay);
dateTime = dateTime.add(Duration(days: 7))) {
DateModel dateModel = DateModel.fromDateTime(dateTime);
weekList.add(dateModel);
// print("nowTime.isBefore(dateTime)");
// print("$nowTime,,,,$dateTime");
if (nowTime.isAfter(dateTime)) {
temp++;
}
}
initialWeekPage = temp;
LogUtil.log(
TAG: this.runtimeType,
message:
"初始化星期视图的信息:一共有${weekList.length}个星期initialPage为$initialWeekPage");
this.weekController = new PageController(initialPage: initialWeekPage);
}
calendarConfiguration.monthList = monthList;
calendarConfiguration.weekList = weekList;
calendarConfiguration.monthController = monthController;
calendarConfiguration.weekController = weekController;
}
//周视图切换
void addWeekChangeListener(OnWeekChange listener){
this.calendarConfiguration.weekChangeListeners.add(listener);
}
//月份切换监听
void addMonthChangeListener(OnMonthChange listener) {
// this.calendarConfiguration.monthChange = listener;
this.calendarConfiguration.monthChangeListeners.add(listener);
}
//点击选择监听
void addOnCalendarSelectListener(OnCalendarSelect listener) {
this.calendarConfiguration.calendarSelect = listener;
}
//多选超出指定范围
void addOnMultiSelectOutOfRangeListener(OnMultiSelectOutOfRange listener) {
this.calendarConfiguration.multiSelectOutOfRange = listener;
}
//多选超出限制个数
void addOnMultiSelectOutOfSizeListener(OnMultiSelectOutOfSize listener) {
this.calendarConfiguration.multiSelectOutOfSize = listener;
}
//切换展开状态
void toggleExpandStatus() {
calendarProvider.expandStatus.value = !calendarProvider.expandStatus.value;
LogUtil.log(
TAG: this.runtimeType,
message: "toggleExpandStatus${calendarProvider.expandStatus.value}");
}
//监听展开变化
void addExpandChangeListener(ValueChanged<bool> expandChange) {
calendarProvider.expandStatus.addListener(() {
expandChange(calendarProvider.expandStatus.value);
});
}
//可以动态修改extraDataMap
void changeExtraData(Map<DateModel, Object> newMap) {
this.calendarConfiguration.extraDataMap = newMap;
this.calendarProvider.generation.value++;
}
//可以动态修改默认选中的item。
void changeDefaultSelectedDateList(Set<DateModel> defaultSelectedDateList) {
this.calendarConfiguration.defaultSelectedDateList =
defaultSelectedDateList;
this.calendarProvider.generation.value++;
}
//可以动态修改默认选中的item
void changeDefaultSelectedDateModel(DateModel dateModel) {
this.calendarProvider.selectDateModel = dateModel;
this.calendarProvider.generation.value++;
}
/**
* 月份或者星期的上一页
*/
Future<bool> previousPage() async {
if (calendarProvider.expandStatus.value == true) {
//月视图
int currentIndex =
calendarProvider.calendarConfiguration.monthController.page.toInt();
if (currentIndex == 0) {
return false;
} else {
calendarProvider.calendarConfiguration.monthController
.previousPage(duration: DEFAULT_DURATION, curve: Curves.ease);
calendarProvider.calendarConfiguration.monthChangeListeners
.forEach((listener) {
listener(monthList[currentIndex - 1].year,
monthList[currentIndex - 1].month);
});
DateModel temp = new DateModel();
temp.year = monthList[currentIndex].year;
temp.month = monthList[currentIndex].month;
temp.day = monthList[currentIndex].day + 14;
calendarProvider.lastClickDateModel = temp;
return true;
}
} else {
//周视图
int currentIndex =
calendarProvider.calendarConfiguration.weekController.page.toInt();
if (currentIndex == 0) {
return false;
} else {
calendarProvider.calendarConfiguration.weekController
.previousPage(duration: DEFAULT_DURATION, curve: Curves.ease);
return true;
}
}
}
/**
* 月份或者星期的下一页
* true成功
* false:是最后一页
*/
Future<bool> nextPage() async {
if (calendarProvider.expandStatus.value == true) {
//月视图
int currentIndex =
calendarProvider.calendarConfiguration.monthController.page.toInt();
if (monthList.length - 1 == currentIndex) {
return false;
} else {
calendarProvider.calendarConfiguration.monthController
.nextPage(duration: DEFAULT_DURATION, curve: Curves.ease);
calendarProvider.calendarConfiguration.monthChangeListeners
.forEach((listener) {
listener(monthList[currentIndex + 1].year,
monthList[currentIndex + 1].month);
});
DateModel temp = new DateModel();
temp.year = monthList[currentIndex].year;
temp.month = monthList[currentIndex].month;
temp.day = monthList[currentIndex].day + 14;
calendarProvider.lastClickDateModel = temp;
return true;
}
} else {
//周视图
int currentIndex =
calendarProvider.calendarConfiguration.weekController.page.toInt();
if (weekList.length - 1 == currentIndex) {
return false;
} else {
calendarProvider.calendarConfiguration.weekController
.nextPage(duration: DEFAULT_DURATION, curve: Curves.ease);
return true;
}
}
}
//跳转到指定日期
void moveToCalendar(int year, int month, int day,
{bool needAnimation = false,
Duration duration = const Duration(milliseconds: 500),
Curve curve = Curves.ease}) {
if (calendarProvider.expandStatus.value == true) {
DateModel dateModel = DateModel.fromDateTime(DateTime(year, month, 1));
//计算目标索引
int targetPage = monthList.indexOf(dateModel);
if (targetPage == -1) {
return;
}
if (calendarProvider.calendarConfiguration.monthController.hasClients ==
false) {
return;
}
if (needAnimation) {
calendarProvider.calendarConfiguration.monthController
.animateToPage(targetPage, duration: duration, curve: curve);
} else {
calendarProvider.calendarConfiguration.monthController
.jumpToPage(targetPage);
}
} else {
DateModel dateModel = DateModel.fromDateTime(DateTime(year, month, 1));
//计算目标索引
int targetPage = 0;
for (int i = 0; i < weekList.length - 1; i++) {
DateModel first = weekList[i];
DateModel next = weekList[i + 1];
if (!first.isAfter(dateModel) && next.isAfter(dateModel)) {
targetPage = i;
return;
}
}
if (calendarProvider.calendarConfiguration.weekController.hasClients ==
false) {
return;
}
if (needAnimation) {
calendarProvider.calendarConfiguration.weekController
.animateToPage(targetPage, duration: duration, curve: curve);
} else {
calendarProvider.calendarConfiguration.weekController
.jumpToPage(targetPage);
}
}
}
//切换到下一年
void moveToNextYear(
{bool needAnimation = false,
Duration duration = const Duration(milliseconds: 500),
Curve curve = Curves.ease}) {
DateTime targetDateTime = monthList[calendarProvider
.calendarConfiguration.monthController.page
.toInt() +
12]
.getDateTime();
moveToCalendar(
targetDateTime.year, targetDateTime.month, targetDateTime.day,
needAnimation: needAnimation, duration: duration, curve: curve);
}
//切换到上一年
void moveToPreviousYear(
{bool needAnimation = false,
Duration duration = const Duration(milliseconds: 500),
Curve curve = Curves.ease}) {
DateTime targetDateTime = monthList[calendarProvider
.calendarConfiguration.monthController.page
.toInt() -
12]
.getDateTime();
moveToCalendar(
targetDateTime.year, targetDateTime.month, targetDateTime.day,
needAnimation: needAnimation, duration: duration, curve: curve);
}
//切换到下一个月份,
void moveToNextMonth(
{bool needAnimation = false,
Duration duration = const Duration(milliseconds: 500),
Curve curve = Curves.ease}) {
// 如果当前显示的是周视图的话需要计算出第一个月的index后调用weekController
if (calendarProvider.expandStatus.value == false) {
int currentMonth = weekList[calendarProvider
.calendarConfiguration.weekController.page
.toInt()]
.month;
for (int i = calendarProvider.calendarConfiguration.weekController.page
.toInt();
i < weekList.length;
i++) {
if (weekList[i].month != currentMonth) {
calendarProvider.calendarConfiguration.weekController.jumpToPage(i);
break;
}
}
return;
}
if ((calendarProvider.calendarConfiguration.monthController.page.toInt() +
1) >=
monthList.length) {
LogUtil.log(TAG: this.runtimeType, message: "moveToNextMonth当前是最后一个月份");
return;
}
DateTime targetDateTime = monthList[calendarProvider
.calendarConfiguration.monthController.page
.toInt() +
1]
.getDateTime();
moveToCalendar(
targetDateTime.year, targetDateTime.month, targetDateTime.day,
needAnimation: needAnimation, duration: duration, curve: curve);
}
//切换到上一个月份
void moveToPreviousMonth(
{bool needAnimation = false,
Duration duration = const Duration(milliseconds: 500),
Curve curve = Curves.ease}) {
// 如果当前显示的是周视图的话需要计算出第一个月的index后调用weekController
if (calendarProvider.expandStatus.value == false) {
int currentMonth = weekList[weekController.page.toInt()].month;
for (int i = calendarProvider.calendarConfiguration.weekController.page
.toInt();
i >= 0;
i--) {
if (weekList[i].month != currentMonth &&
weekList[i].isAfter(DateModel.fromDateTime(DateTime(
calendarConfiguration.minYear,
calendarConfiguration.minYearMonth)))) {
calendarProvider.calendarConfiguration.weekController.jumpToPage(i);
break;
}
}
return;
}
if ((calendarProvider.calendarConfiguration.monthController.page.toInt()) ==
0) {
LogUtil.log(
TAG: this.runtimeType, message: "moveToPreviousMonth当前是第一个月份");
return;
}
DateTime targetDateTime = monthList[calendarProvider
.calendarConfiguration.monthController.page
.toInt() -
1]
.getDateTime();
moveToCalendar(
targetDateTime.year, targetDateTime.month, targetDateTime.day,
needAnimation: needAnimation, duration: duration, curve: curve);
}
// 获取当前的月份
DateModel getCurrentMonth() {
return monthList[monthController.page.toInt()];
}
//获取被选中的日期,多选
Set<DateModel> getMultiSelectCalendar() {
return calendarProvider.selectedDateList;
}
//获取被选中的日期,单选
DateModel getSingleSelectCalendar() {
return calendarProvider.selectDateModel;
}
//清除数据
void clearData() {
monthList.clear();
weekList.clear();
calendarProvider.clearData();
calendarConfiguration.weekChangeListeners=null;
calendarConfiguration.monthChangeListeners=null;
}
}
/**
* 默认的weekBar
*/
Widget defaultWeekBarWidget() {
return const DefaultWeekBar();
}
/**
* 使用canvas绘制item
*/
Widget defaultCustomDayWidget(DateModel dateModel) {
return DefaultCustomDayWidget(
dateModel,
);
}
/**
* 使用组合widget的方式构造item
*/
Widget defaultCombineDayWidget(DateModel dateModel) {
return new DefaultCombineDayWidget(
dateModel,
);
}
/**
* 判断是否在范围内,不在范围内的话,可以置灰
*/
bool defaultInRange(DateModel dateModel) {
return true;
}
/**
* 周视图切换
*/
typedef void OnWeekChange(int year, int month);
/**
* 月份切换事件
*/
typedef void OnMonthChange(int year, int month);
/**
* 日期选择事件
*/
typedef void OnCalendarSelect(DateModel dateModel);
/**
* 多选超出指定范围
*/
typedef void OnMultiSelectOutOfRange();
/**
* 多选超出限制个数
*/
typedef void OnMultiSelectOutOfSize();
/**
* 可以创建自定义样式的item
*/
typedef Widget DayWidgetBuilder(DateModel dateModel);
/**
* 是否可以点击,外部来进行判断,默认都可以点击
*/
typedef bool CanClick(DateModel dateModel);
/**
* 可以自定义绘制每个Item这种扩展性好一点以后可以提供给外部进行自定义绘制
*/
typedef void DrawDayWidget(DateModel dateModel, Canvas canvas, Size size);
/**
* 自定义顶部weekBar
*/
typedef Widget WeekBarItemWidgetBuilder();