jungle-organic/ts_src/base/ports.ts

The organic programming framework

namespace Jungle{

    export namespace IO {


        export class Port{
            callbackContext:any;
            callback:any;

            shells:Shell[];

            constructor(public label){
                this.shells = [];
            }

            /**
             * every kind of port needs to be retrofusable
             */
            addShell(shell){
                this.shells.push(shell)
            }

            designate(designator:PortDesignator):boolean{
                switch (designator.type){
                    case DesignationTypes.ALL :{
                        return true;
                    }
                    case  DesignationTypes.REGEX :{
                        return this.label.match(designator.data);
                    }
                    case DesignationTypes.FUNC:{
                        return designator.data(this);
                    }
                    case DesignationTypes.MATCH:{
                        //console.log("match designation label: ", this.label, ' designation', designator.data)
                        return this.label === designator.data;
                    }
                    default:
                        return false;
                }
            }

            dress(coat:OutputCoat){
                this.prepareContext(coat.context);
                this.prepareCallback(coat.callback);
            }

            prepareCallback(callback){
                if(!(typeof(callback)=='string' || typeof(callback) =='function')){
                    throw new Error('Callback must be method name or')
                }

                this.callback = callback;
            }

            prepareContext(outputContext){
                if (typeof(outputContext) == 'function'){
                    this.callbackContext = new outputContext(this);
                }else if (outputContext instanceof Object){
                    this.callbackContext = outputContext;
                }else{
                    throw Error("Invalid context fabrication, must be object or contructor")
                }
            }

            handle(input){
                if(this.callback){
                    if(this.callbackContext){

                        if (typeof(this.callback) == 'string'){
                            let method = this.callbackContext[<string>this.callback];
                            if(method === undefined){
                                throw new Error("method must be accessible in provided context")
                            }

                            method.call(this.callbackContext, input);
                        }else{
                            this.callback.call(this.callbackContext, input)
                        }

                    }else{

                        if (typeof(this.callback) == 'string'){
                            throw new Error("method name can only be given with context");
                        }

                        //dont call globally just go without context;
                        this.callback.call(null, input)
                    }
                }
            }
        }



    }
}