feat(chips): add functionality to disable removing.

[devversion]

• By default - chips are writable and deletable
• readonly="true"- chips are readonly and not deletable
• readonly="true" md-removable="true" - chips are readonly, and deletable
• readonly="true" md-removable="false" - chips are readonly, not deletable
• md-removable="false"- chips are writable, not deletable

Closes #5796. Fixes #3820.

[topherfangio]

I think I would rather see this as an md-removable option that works in tandem with the readonly option.

For instance:

• By default - chips are writable and deletable (current functionality)
• readonly="true" - chips are readonly and deletable (current functionality)
• readonly="true" md-removable="true" - chips are readonly, and deletable (new syntax, but same functionality as above)
• readonly="true" md-removable="false" - chips are readonly, not deletable (new)
• md-removable="false" - chips are writable, not deletable (new)

I think this gives the user a bit more customizability and follows better conventions.

Note: In this case, we should begin the attribute with md-. The readonly attribute doesn't contain an md- because it is an existing/standard HTML attribute.

Thoughts?

[devversion]

Yes, sorry for the late answer - Seems to be better, I will try to implement that ;)

[devversion]

@topherfangio - All done - Added Tests and added a demo checkbox to toggle the chips ;)

[joaovieira]

Waiting for this 😭

[topherfangio]

@devversion I know this says "needs: review" but is it actually ready? The comment above leads me to believe that there is more work that needs to be done.

[alice-kroch]

Really need this feature

[topherfangio]

@ThomasBurleson LGTM! Recommend this for 1.2.0.

[SneakyTurtle20]

Any update on this feature? Thanks.

[Splaktar]

@SneakyTurtle20 as the PR says, this was released in 1.1.0. You can see a demo of it here: https://material.angularjs.org/latest/demo/chips#basic-usage. There is a checkbox for "Removable".