Jeff Zhang 7b585c7399 ZEPPELIN-2395. Refactor Input.java to make dynamic forms extensible ... ### What is this PR for? Currently, zeppelin only support 3 kinds of dynamic form controls: TextBox, Select, CheckBox. All the things are in `Input.java`, this is hard to add new controls, this PR is for refactoring Input to make dynamic forms extensible. Main Changes: * Make `Input` as the base class of dynamic forms also use it as the factory class * All the concret dynamic forms extend `Input` * Add method `toJson` and `fromJson` for `GUI` for `GUI`'s serialization/deserialization. I plan to do it for other classes as well, so that we can remove duplicated serde code and also make it easy to test serialization/deserialization * Change `z.input` to `z.textbox` as I think z.input is a little misleading. But I still keep `z.input` and make `z.input` as deprecated. * Ideally the new input forms' json should be the same as the old input form json. But there's one bug in the old input form, `type` is missing if the input forms are created in frontend for textbox and select. So I keep the old input forms for compatibility. I will load the old input forms json and convert it into new input forms, and after saving, `note.json` would have the new input forms json. After this PR, user needs to do 3 things to add new ui controls * Implement its UI control classes, (refer TextBox/CheckBox/Select), and specify it in `TypeAdapterFactory` of `Input` for serde. * Add parsing logic in `Input.getInputForm` if you want to support this control in frontend. * Add display logic in `paragraph-parameterizedQueryForm.html` ### What type of PR is it? [ Improvement | Refactoring] ### Todos * [ ] - Task ### What is the Jira issue? * https://issues.apache.org/jira/browse/ZEPPELIN-2395 ### How should this be tested? Test is added ### Screenshots (if appropriate) ### Questions: * Does the licenses files need update? Yes * Is there breaking changes for older versions? No * Does this needs documentation? No Author: Jeff Zhang <zjffdu@apache.org> Closes #2245 from zjffdu/ZEPPELIN-2395 and squashes the following commits: 16d42a8 [Jeff Zhang] ZEPPELIN-2395. Refactor Input.java to make dynamic forms extensible		2017-04-20 10:56:54 +08:00
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src	ZEPPELIN-2395. Refactor Input.java to make dynamic forms extensible	2017-04-20 10:56:54 +08:00
pom.xml	ZEPPELIN-2395. Refactor Input.java to make dynamic forms extensible	2017-04-20 10:56:54 +08:00