Module: LucidApp::NativeComponentConstructor

Defined in:
lib/lucid_app/native_component_constructor.rb

Class Method Summary collapse

Class Method Details

.extended(base) ⇒ Object

for should_component_update we apply ruby semantics for comparing props to do so, we convert the props to ruby hashes and then compare this makes sure, that for example rubys Nil object gets handled properly



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# File 'lib/lucid_app/native_component_constructor.rb', line 6

def self.extended(base)
  component_name = base.to_s
  # language=JS
  %x{
    base.react_component = class extends Opal.global.React.Component {
      constructor(props) {
        super(props);
        if (base.$default_state_defined()) {
          this.state = base.$state().$to_n();
        } else {
          this.state = {};
        };
        this.state.isomorfeus_store_state = Opal.Isomorfeus.store.native.getState();
        var current_store_state = this.state.isomorfeus_store_state;
        if (typeof current_store_state.component_class_state[#{component_name}] !== "undefined") {
          this.state.component_class_state = {};
          this.state.component_class_state[#{component_name}] = current_store_state.component_class_state[#{component_name}];
        } else {
          this.state.component_class_state = {};
          this.state.component_class_state[#{component_name}] = {};
        };
        this.__ruby_instance = base.$new(this);
        this.__object_id = this.__ruby_instance.$object_id().$to_s();
        if (!this.state.component_state) {
          this.state.component_state = {};
          this.state.component_state[this.__object_id] = {};
        };
        var event_handlers = #{base.event_handlers};
        for (var i = 0; i < event_handlers.length; i++) {
          this[event_handlers[i]] = this[event_handlers[i]].bind(this);
        }
        var defined_refs = #{base.defined_refs};
        for (var ref in defined_refs) {
          if (defined_refs[ref] != null) {
            this[ref] = function(element) {
              element = Opal.React.native_element_or_component_to_ruby(element);
              #{`this.__ruby_instance`.instance_exec(`element`, &`defined_refs[ref]`)}
            }
            this[ref] = this[ref].bind(this);
          } else {
            this[ref] = Opal.global.React.createRef();
          }
        }
        this.listener = this.listener.bind(this);
        this.unsubscriber = Opal.Isomorfeus.store.native.subscribe(this.listener);
      }
      static get displayName() {
        return #{component_name};
      }
      render() {
        Opal.React.render_buffer.push([]);
        Opal.React.active_components.push(this);
        Opal.React.active_redux_components.push(this.__ruby_instance);
        #{`this.__ruby_instance`.instance_exec(&`base.render_block`)};
        Opal.React.active_redux_components.pop();
        Opal.React.active_components.pop();
        var children = Opal.React.render_buffer.pop();
        return Opal.global.React.createElement(Opal.global.LucidApplicationContext.Provider, { value: this.state.isomorfeus_store_state }, children);
      }
      listener() {
        var next_state = Opal.Isomorfeus.store.native.getState();
        var current_ruby_state = Opal.Hash.$new(this.state.isomorfeus_store_state);
        var next_ruby_state = Opal.Hash.$new(next_state);
        if (#{`next_ruby_state` != `current_ruby_state`}) {
          var self = this;
          /* setTimeout(function() { */ self.setState({ isomorfeus_store_state: next_state }); /*}, 0 ); */
        }
      }
      componentWillUnmount() {
        if (typeof this.unsubscriber === "function") { this.unsubscriber(); };
      }
    }
  }
end