application

type ComponentFactory interface {
	NewInstance() ComponentInstance
}

type ComponentHolder interface {
	GetInstance() ComponentInstance
	IsOriginalName(name string) bool
	GetInfo() ComponentInfo
	GetPrototype() lang.Object
	GetContext() Context
	MakeChild(context Context) ComponentHolder
}

type ComponentHolderFilter func(name string, holder ComponentHolder) bool

type ComponentInfo interface {
	GetID() string
	GetClass() string
	GetAliases() []string
	GetClasses() []string
	GetScope() ComponentScope
	GetFactory() ComponentFactory
	GetPrototype() lang.Object

	IsTypeOf(typeName string) bool
	IsNameOf(alias string) bool
}

type ComponentInstance interface {
	Get() lang.Object
	IsLoaded() bool
	Inject(context Context) error
	Init() error
	Destroy() error
}

type ComponentLoader interface {
	io.Closer
	Load(h ComponentHolder) (lang.Object, error)
	LoadAll(h []ComponentHolder) ([]lang.Object, error)
	GetReleasePool() lang.ReleasePool
	GetContext() Context
}

type ComponentScope uint32

type Components interface {
	// ids
	GetComponentNameList(includeAliases bool) []string

	// getters
	GetComponent(selector string) (ComponentHolder, error)
	GetComponents(selector string) []ComponentHolder
	GetComponentsByFilter(f ComponentHolderFilter) []ComponentHolder

	// export & import
	Export(map[string]ComponentHolder) map[string]ComponentHolder
	Import(map[string]ComponentHolder)
}

type ConfigBuilder interface {
	AddComponent(info ComponentInfo)
	SetResources(res collection.Resources)

	SetEnableLoadPropertiesFromArguments(enable bool)
	IsEnableLoadPropertiesFromArguments() bool

	Create() Configuration
}

type Configuration interface {
	GetLoader() ContextLoader
	GetComponents() []ComponentInfo
	GetResources() collection.Resources
	GetEnvironment() collection.Environment
	IsEnableLoadPropertiesFromArguments() bool
}

type Context interface {
	ContextCollections
	ContextInfo

	// helper
	SetErrorHandler(h lang.ErrorHandler)
	GetErrorHandler() lang.ErrorHandler
	NewChild() Context

	FindComponent(selector string) (lang.Object, error)
	FindComponents(selector string) []lang.Object
	Injector() Injector
	InjectorScope(scope ComponentScope) Injector
}

type ContextCollections interface {
	GetReleasePool() lang.ReleasePool
	GetComponents() Components

	GetArguments() collection.Arguments
	GetAttributes() collection.Attributes
	GetEnvironment() collection.Environment
	GetProperties() collection.Properties
	GetParameters() collection.Parameters
	GetResources() collection.Resources
}

type ContextGetter interface {

	// for property
	GetProperty(name string) (string, error)
	GetPropertySafely(name string, _default string) string
	GetPropertyString(name string, _default string) string
	GetPropertyInt(name string, _default int) int
}

type ContextInfo interface {

	// info
	GetURI() string
	GetApplicationName() string
	GetApplicationVersion() string
	GetStartupTimestamp() int64
	GetShutdownTimestamp() int64
}

type ContextLoader interface {
	Load(config Configuration, args []string) (Context, error)
}

type ExitCodeGenerator interface {
	ExitCode() int
}

type Injection interface {
	AsList() Injection
	IncludeAliases() Injection
	Accept(f ComponentHolderFilter) Injection
	To(func(lang.Object) bool)
}

type Injector interface {
	ContextGetter

	//  selector 类似css中的selector，用“#xxx”表示id选择器，用“.xxx”表示类选择器，用“*”表示全部
	Inject(selector string) Injection
	GetComponent(selector string) (lang.Object, error)

	Done() error
}

type Looper interface {
	Loop() error
}

type Runnable interface {
	Run(context Context) error
}

type SimpleContext interface {
	GetAttribute(name string) interface{}
	SetAttribute(name string, value interface{})
}