Class: Preact::ContextWrapper

Inherits:
Object
  • Object
show all
Includes:
Native::Wrapper
Defined in:
lib/preact/context_wrapper.rb

Instance Method Summary collapse

Constructor Details

#initialize(native) ⇒ ContextWrapper

Returns a new instance of ContextWrapper.



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# File 'lib/preact/context_wrapper.rb', line 5

def initialize(native)
  @native = native
end

Instance Method Details

#Consumer(*args, &block) ⇒ Object 



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# File 'lib/preact/context_wrapper.rb', line 13

def Consumer(*args, &block)
  %x{
    let operabu = Opal.Preact.render_buffer;
    let props = null;

    if (args.length > 0) { props = Opal.Preact.to_native_preact_props(args[0]); }

    let preact_element = Opal.global.Preact.createElement(this.native.Consumer, props, function(value) {
      let children = null;
      if (block !== nil) {
        operabu.push([]);
        // console.log("consumer pushed", operabu, operabu.toString());
        try {
          let block_result = block.$call(value);
          if (block_result && block_result !== nil) { Opal.Preact.render_block_result(block_result); }
        } catch (e) { console.error(e.message === nil ? 'error at' : e.message, e.stack); }
        // console.log("consumer popping", operabu, operabu.toString());
        children = operabu.pop();
        if (children.length === 1) { children = children[0]; }
        else if (children.length === 0) { children = null; }
      }
      return children;
    });
    operabu[operabu.length - 1].push(preact_element);
  }
end

#is_wrapped_context ⇒ Object 



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# File 'lib/preact/context_wrapper.rb', line 9

def is_wrapped_context
  true
end

#Provider(*args, &block) ⇒ Object 



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# File 'lib/preact/context_wrapper.rb', line 40

def Provider(*args, &block)
  %x{
    var props = null;
    if (args.length > 0) { props = Opal.Preact.to_native_preact_props(args[0]); }
    Opal.Preact.internal_render(this.native.Provider, props, null, block);
  }
end