Components: Missing docs for properties/methods

[rafaelss95]

Bug, feature request, or proposal:

Bug/Proposal.

What is the expected behavior?

The listed propeties/methods have no docs.

What is the current behavior?

Here's the list that I found of all missing docs.

| Class | Properties | Methods |
| ------------- | ------------- | -------------
| MatAutocompleteTrigger |autocomplete, panelOpen
| MatChip | ariaSelected |
| MatChipInput | focused | focus
| MatChipList | controlType , ngControl, role | onContainerClick, setDescribedByIds
| MatDialogClose | dialogRef
| MatDialogRef | id
| MatDialogTitle | id
| MatDatepickerInput | | registerOnValidatorChange, validate
| MatExpansionPanelHeader | panel
| MatError | id
| MatInput | empty, ngControl, shouldLabelFloat | focus, onContainerClick, setDescribedByIds
| MatListOption | selectionList
| MatSelect | ngControl, shouldLabelFloat
| MatSlideToggleChange | All MatSlideToggleChange properties |
| SimpleSnackBar | snackBarRef

Is there anything else we should know?

Related to #8789.

[rafaelss95]

I noticed that some properties/methods are inherited from a parent class. Is there a way to get the docs copied from there instead of maintain two EQUAL docs?

[CDDelta]

Good news PR #9299 is fixing this.

[rafaelss95]

AFAIK that PR is only related for some missing docs, not all.

[devversion]

Every member that is inherited is now showing up in the docs. If you still see some members that are not showing up properly, please file a new issue/or respond here and cc. me. Thanks!

[rafaelss95]

@DevVersion I guess you solved part of the "problem". This issue doesn't consists only about inherited members. There are a few members (in table that I listed) that are still undocumented and aren't inherited from anywhere.

It'd be great if you reopen this issue.

---

By the way, do you mind if I send separate PRs to fix some of them?

[devversion]

@rafaelss95 That might be true. I didn't specifically look at all members in the table you posted, because I thought it was also about the inherited members.

And sure, please go ahead and submit a PR. For such small changes It would be better to just have one PR for all members.

[rcanacci]

Does anyone here know how to use 'shouldLabelFloat' on a MatInput?

Completely lost, docs are useless.

[rafaelss95]

@DevVersion:

ExpansionPanel:

expanded is declared like this:

https://github.com/angular/material2/blob/7024dc49f8cc067da14be36a8172437e03074186/src/lib/expansion/expansion-panel.ts#L75

Is there a specific reason to it be declared this way, instead of the _usual_ @Input()? I'm asking because this way, AFAIK, it can't be documented.

Sort:

matSortDisabled is declared like this:

https://github.com/angular/material2/blob/7024dc49f8cc067da14be36a8172437e03074186/src/lib/sort/sort.ts#L58

...however it appears as disabled in docs.

---

Also, all the inputs declared in Component/Directive _metadata_ appear without @Input() decorated. Is it the expected behavior?

[rossgardt]

How can one hide the updateErrorState from the docs? (For example in MatSelect.) From what I understand this should not be part of the public API.