Simple but powerful Calendar Week View for iOS With dragable events, infinte scroll and pinchable hours size

Following the work from MSCollectionView

I created this library simplifing its usage and adding some interesting features

Installation

pod RVCalendarWeekView

or just copy the files inside the lib folder by now

Usage

you can now use storyboard to create a simple UIView extending the MSWeekView and then just do this:

    -(void)viewDidLoad{
        MSEvent* event1 = [MSEvent make:NSDate.now
        title:@"Title"
        location:@"Central perk"];

        MSEvent* event2 = [MSEvent make:[NSDate.now addMinutes:10]  //AddMinutes comes from EasyDate pod
        duration:60*3
        title:@"Title 2"
        location:@"Central perk"];

        _weekView.events = @[event1,event2];        
    }

Easy right?

Features

To add features to the WeekView I'm using a decorator pattern, this way we can extend the weekView with diferent features without the need of multiple inhertance and to have a expressive modular design However, this adds the need to have a strong reference to the decorator that will hold the features.

So we can add features to the weekView with the following code:

    self.decoratedWeekView = [MSWeekViewDecoratorFactory make:self.weekView
                                                     features:(MSDragableEventFeature|MSNewEventFeature|MSInfiniteFeature|MSChangeDurationFeature)
                                                  andDelegate:self];

This is the fast way where the delegate should have all the methods for each feature delegate (see below).

The long way is something more like the standard decorator pattern in case you need more flexibility.

    MSWeekView* decoratedView = baseView;
    decoratedView = [MSWeekViewDecoratorInfinite makeWith:decoratedView andDelegate:infiniteDelegate];
    decoratedView = [MSWeekViewDecoratorNewEvent makeWith:decoratedView andDelegate:newEventDelegate];
    decoratedView = [MSWeekViewDecoratorDragable makeWith:decoratedView andDelegate:dragableDelegate];
    decoratedView = [MSWeekViewDecoratorChangeDuration makeWith:decoratedView andDelegate:durationDelegate];

There is a function to easily set the minutes precision to all decorators in case you need something diferent than the default 5 minutes.

    [MSWeekViewDecoratorFactory setMinutesPrecisionToAllDecorators:decoratedView minutesPrecision:15];

Drag and drop

You can get the feature to change the event duration with MSDragableEventFeature

It will fire the following functions on your dragDelegate

    -(BOOL)weekView:(MSWeekView*)weekView canMoveEvent:(MSEvent*)event to:(NSDate*)date;

    -(void)weekView:(MSWeekView*)weekView event:(MSEvent*)event moved:(NSDate*)date;

Change duration

You can get the feature to change the event duration with MSChangeDurationFeature

    -(BOOL)weekView:(MSWeekView*)weekView canChangeDuration:(MSEvent*)event startDate:(NSDate*)startDate endDate:(NSDate*)endDate;

    -(void)weekView:(MSWeekView*)weekView event:(MSEvent*)event durationChanged:(NSDate*)startDate endDate:(NSDate*)endDate;

Create new event on long press

it will fire the following functions on your createEventDelegate

    -(void)weekView:(MSWeekView*)weekView onLongPressAt:(NSDate*)date

Infinite scroll

It will fire the following functions on your infiniteDelegate

    -(BOOL)weekView:(MSWeekView*)weekView newDaysLoaded:(NSDate*)startDate to:(NSDate*)endDate;

Unavailable Hours

The standard weekView comes with an optional delegate function to display unavailable hours in gray (customizable class of course)

just do something like this:

//This one is optional
    -(NSArray*)weekView:(id)sender unavailableHoursPeriods:(NSDate*)date{
        if(!unavailableHours){
            unavailableHours = @[
                [MSHourPerdiod make:@"00:00" end:@"09:00"],
                [MSHourPerdiod make:@"18:30" end:@"21:00"],
            ];
        }
        return unavailableHours;
    }

Pinchable

This doesn't work really well yet
You just need to add the MSPinchableFeature in the [MSWeekViewDecoratorFactory make:...]

Options

You can even customize some options (they all have defaults values so you just need to modify them if you want to work differently)

_weekView.weekFlowLayout.show24Hours    = YES; //Show All hours or just the min to cover all events
_weekView.weekFlowLayout.hourHeight     = 50;  //Define the hour height
_weekView.daysToShowOnScreen            = 7;   //How many days visible at the same time
_weekView.daysToShow                    = 31;  //How many days to display (Ininite scroll feature pending)
_weekView.weekFlowLayout.hourGridDivisionValue  = MSHourGridDivision_15_Minutes; // Show hour division lines (at lower alpha) each X minutes, by default its NONE so they are not shown.

This is a complex example on how you can customize it.

• In this one we are displaying just one day, with each employee as worker.
  
• Unavailable hours class with pattern image background.
  
• Custom Event Cell.
• Custom header section view
  
• Custom header background

Contributors

· Jordi Puigdellívol - https://github.com/badchoice
· Eric Horacek - https://github.com/erichoracek
· Kyle Fleming - https://github.com/kylefleming