GitHub user 1ambda reopened a pull request:
https://github.com/apache/zeppelin/pull/2118
[ZEPPELIN-2242] Toggle helium type buttons
### What is this PR for?
Toggle helium type buttons so that user can distinguish which button is
clicked easily. Previously,
- it's hard to get noticed that `VISUALIZATION` button is clicked by
default.
- and buttons lose their focus when user clicks anything.
I attached screenshots.
### What type of PR is it?
[Improvement]
### Todos
NONE
### What is the Jira issue?
[ZEPPELIN-2242](https://issues.apache.org/jira/browse/ZEPPELIN-2242)
### How should this be tested?
1. Open `/#helium` page
2. Click buttons. (refer the screenshots below)
### Screenshots (if appropriate)
#### Before
#### After
### Questions:
* Does the licenses files need update? - NO
* Is there breaking changes for older versions? - NO
* Does this needs documentation? - NO
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/1ambda/zeppelin
ZEPPELIN-2242/toggle-helium-type-buttons
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zeppelin/pull/2118.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2118
----
commit e4e59bc9d2d39f57f87edc053f3ec17b101d4c22
Author: 1ambda <1am...@gmail.com>
Date: 2017-03-10T06:59:07Z
feat: Toggle helium type buttons
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