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{
 "type": "TextView",
 "data": {
    "var-1": "@{a.b.c}",
    "var-2": "@{fn:func(@{var-1})}"
  }
}

Here var-2 is a variable which is referring to var-1 which was declared before it. Basically standard block level variable scoping.

Unable to find any example of recyclerview implementation with Proteus. Could you please provide an example of how to write the adapter class with viewholder using Proteus? Any sort of hint would also help.
Thanks.

Textview.textColor accepts colorstatelist. But resource reference parser gives drawables.

offset is currently being calculated from the size of the attributes map. If a module overrides a preregistered attribute the calculation goes for a toss; because the processors array length will be increased by 1 by the entry in the map will be just overridden.
The offset should be calculated using the processorsarray instead.

Move it to the ProteusView.Manager instead. This will ease implementing the ProteusView interface.

ex. try and inflate a Button and set a text attribute on it.

What Exactly Value class does in Event
override fun onEvent(view: ProteusView?, eventType: EventType?, value: Value?) { }

How can i able to get Json fields from Value class

And You examples Says You using Retrofit and Casting all layouts into Layout class , Is Layout class can you used for Casting any Layout

Handle top and bottom padding independently. Right now its together.

Is there any Plans for Something Similar for IOS.

Is there any maven and jcenter repository is available to include this library as dependency?

As mentioned in the usage docs, I am initiating the command 'npm start' into the project root and Server running at http://1XX.X.X.X:8080/ , but after sometime getting error like 404 : ./index.html

{
 "type": "TextView",
 "data": {
    "var": {
        "@": {
           "key": "@{some.binding}"
        }
    }
  }
}

Here var is a variable declared in the data scope which has nested binding.

When overriding AttributeProcessor.compile() we should not return a default value if we are unable to compile the input. Instead, we should return super.compile(); to properly handle inherited implementations and custom value types in input.
This should be added to the JavaDoc as well as the FAQ section

The fix for #86 has broken the update flow in proteus,

After following the steps given in ReadMe.

I am getting below error -

`Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.github.flipkart-incubator:proteus-core:5.0.0-rc11. Open File Show Details

`

Can you please make a docs on onClick as you Docs says onClick is Supported for View types

The DataBinding class should have a method say:

public void assign(Value value, Value data, int dataIndex)

which can be used to assign a value at the binding path in the data . Example

data:

{
  "user": {
    "name": "John Doe"
  }
}

code:

DataBinding binding = DataBinding.valueOf("user.name");
Value name = new Primitive("Jane Doe");

binding.assign(name, data, 0); // where `data` is the above json

The data should now be:

{
  "user": {
    "name": "Jane Doe"
  }
}

Hi,

This might be a very silly question to ask but I am really unable to figure out a way on how to get the text from an EditText and pass the text to a button click event listener.

For example, I have the below layout json

{
  "type": "LinearLayout",
  "layout_height": "match_parent",
  "layout_width": "match_parent",
  "padding": "8dp",
  "orientation": "vertical",
  "children": [
    {
      "type": "EditText",
      "id": "etUsername",
      "layout_height": "wrap_content",
      "layout_width": "match_parent",
      "hint": "Username"
    },
    {
      "type": "EditText",
      "id": "etPassword",
      "layout_height": "wrap_content",
      "layout_width": "match_parent",
      "layout_marginTop": "4dp",
      "hint": "Password"
    },
    {
      "type": "Button",
      "id": "btnLogin",
      "layout_height": "wrap_content",
      "layout_width": "match_parent",
      "layout_marginTop": "4dp",
      "text": "Login",
      "onClick": {
        "action": "apiCall",
        "extras": {
          "endpoint": "www.someapi.com/api/v1/login",
          "method": "POST",
          "body": {
            "username": "",
            "password": ""
          }
        }
      }
    }
  ]
}

As you can see, I have a form containing username and password fields and a button. Now I am trying to set the text from etUsername and etPassword to username and password fields respectively in the onClick event object of the button whenever user clicks the button, but I am unable to figure out how to do that.

It would be a great help if anyone can help me in sorting this out as soon as possible.

Thanks,
Rajesh

instead of throwing exceptions. It can return a Result object as follows

public class Result {
  @Nullable;
  String error;
  int code;
  @Nullable;
  JsonElement result;
}

For e.g rukmini urls need this overriding ability.

If a LayoutHandler is wrapped by multiple LayoutHandler it's LayoutHandler.prepare() is called every time the wrapped LayoutHandler is registered with a LayoutBuilder.

This will make the handler logic independent of the order of attributes.

Implement the proteus equivalent of the include tag

<include layout="layout_to_include" />

In order to handle the update flows correctly the Manager's of Views with Adapters like RecyclerView and ViewPager etc should have another implementation of the Manager.

Please find the screenshot of the Error am getting in the Android studio while converting XML to JSON.

based on answers and comments on this stackoverflow question we are removing all logging guards from the library.

It only checks for primitive and object type. It should at least check for Binding, Resource, AttributeResource, StyleResource.

The data-driven children logic was buggy and convoluted. It needs to be refactored, to be consistent with the AttributeHandler principle. New usage of data-driven children is as follows:

{
  "children": {
    "data": "$path.to.data.set",
    "layout": {
        "type": "YourLayout"
    }
  }
}

So no more special attribute handling for children and no more special attributes called childType, childDataContext. The children attribute handler should be moved to ViewGroupParser and LayoutBuilder code has to be cleaned up.

It is good to have such a support like
{ "visible" : "$data == null ? visible : gone" }

Amazing work here. Started exploring proteus and had a quick question.
From the demo I can see that Bitmaploader is used to download image from a network. I was wondering what needs to be done to use libraries like Picasso or Glide with the network images so caching is handled by them.

We should not insert parent data into a child scope. This will leak the parent data into the child scope, and also breaks the layout-data interface. Removing this will also improve performance by avoiding the copying loop per scope object.

Data

{
  "user": {
    "dt": "2017 04 22",
    "ll": "01, XZY, AB"
  }
}

Layout

{
  "type": "TextView",
  "layout_width": "wrap_content",
  "layout_height": "wrap_content",
  "textSize": "14sp",
  "data": {
    "date": "@{fn:date(@{user.dt},'E, d MMM')}"
  },
  "text": "@{fn:format('last login: %s from %s',@{date},@{user.ll})}"
}

Here in the layout user.ll is not added to the data scope of the layout and is only accessible from the outer scope. user.ll should be added to the data scope instead. As follows:

{
"type": "TextView",
"layout_width": "wrap_content",
"layout_height": "wrap_content",
"textSize": "14sp",
"data": {
"date": "@{fn:date(@{user.dt},'E, d MMM')}",
"loc": "@{user.ll}"
},
"text": "@{fn:format('last login: %s from %s',@{date},@{loc})}"
}

Error:Module 'com.github.flipkart-incubator.proteus:design:5.0.0-rc8' depends on one or more Android Libraries but is a jar
`
compile 'com.github.flipkart-incubator.proteus:design:5.0.0-rc8'

`

Let the parser find out whether a view type exists in the registered handlers.
If not, it should use reflection to find out the view. If this is the case, the view should also specify parent parser.
If reflection also does not fetch the view, then we throw onUnknownViewType.

There is no document or comment for any method. Its very hard to understand how it works..

Is custom Views Supported

i have tried to use proteus in my app.But its not working. i want change color and other attributes in the textview.But it is not working. will proteous support existing ids which is inflated by LayoutInflator