feat(datepicker): allow users to specify the default calendar view

[crisbeto]

• Allows users to set the default open view of the calendar via the md-current-view attribute.
• Removes a few unused dependencies from the datepicker.

Fixes #9111.

[devversion]

Can you not make this optional and do in the controller?

this.currentView = this.currentView || 'month';

This would drop the unnecessary variable

I read the comment below, but I can't really see the point here.

[crisbeto]

I tried it out, but for some reason the datepicker kept resetting it after the calendar was opened. E.g. here's what I tried:

var self = this;

console.log(self.currentView); // logs properly

setTimeout(function() {
  console.log(self.currentView); // logs an empty string 
});

It's weird, because it doesn't happen if I switch it to a two-way binding or I also add this.currentView = this.currentView || 'month'; to the datepicker's controller. I went with the underscored property in order to keep all the currentView logic within the calendar.

[devversion]

Hmm, I can't really understand why this is resetted. Isn't the currentView method only called after some interactions?

[crisbeto]

I can't understand it either, the only time something interacts with it is when passing it through the template. My initial guess was because the calendar pane gets transferred from being a child of the datepicker to being directly in the body, but it still happened even after disabling it.

[devversion]

Pretty weird. Not sure if you want to invest some more time, but you could possibly try to hook into that variable and try to figure out where it was changed from.

But other than that, the changes look fine :)