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import { FieldController, Cast, Opt } from "./FieldController"
import { KeyController, KeyStore } from "./KeyController"
import { TypedEvent, Listener, Disposable } from "../util/TypedEvent";
import { DocumentUpdatedArgs, FieldUpdatedAction } from "./FieldUpdatedArgs";
export class DocumentController extends FieldController {
private fields: { [key: string]: { key: KeyController, field: FieldController, disposer: Disposable } } = {};
private fieldUpdateHandlers: { [key: string]: TypedEvent<DocumentUpdatedArgs> } = {};
GetField(key: KeyController, ignoreProto?: boolean): Opt<FieldController> {
let field: Opt<FieldController>;
if (ignoreProto) {
if (key.Id in this.fields) {
field = this.fields[key.Id].field;
}
} else {
let doc: Opt<DocumentController> = this;
while (doc && !(key.Id in doc.fields)) {
doc = doc.GetPrototype();
}
if (doc) {
field = doc.fields[key.Id].field;
}
}
return field;
}
GetFieldT<T extends FieldController = FieldController>(key: KeyController, ctor: { new(): T }, ignoreProto?: boolean): Opt<T> {
return Cast(this.GetField(key, ignoreProto), ctor);
}
SetField(key: KeyController, field: Opt<FieldController>): void {
let oldField: Opt<FieldController>;
if (key.Id in this.fields) {
let old = this.fields[key.Id];
oldField = old.field;
old.disposer.dispose();
}
if (oldField === field) {
return;
}
if (field == null) {
delete this.fields[key.Id];
} else {
this.fields[key.Id] = {
key: key,
field: field,
disposer: field.FieldUpdated.on((args) => this.DocumentFieldUpdated({
action: FieldUpdatedAction.Update,
oldValue: undefined,
newValue: field,
field: this,
fieldArgs: args,
key: key
}))
}
}
let action = oldField === null ? FieldUpdatedAction.Add :
(field === null ? FieldUpdatedAction.Remove :
FieldUpdatedAction.Replace);
this.DocumentFieldUpdated({
field: this,
key: key,
oldValue: oldField,
newValue: field,
action: action
})
}
SetFieldValue<T extends FieldController>(key: KeyController, value: any, ctor: { new(): T }): boolean {
let field = this.GetField(key);
if (field != null) {
return field.TrySetValue(value);
} else {
field = new ctor();
if (field.TrySetValue(value)) {
this.SetField(key, field);
return true;
} else {
return false;
}
}
}
GetPrototype(): Opt<DocumentController> {
return this.GetFieldT(KeyStore.Prototype, DocumentController, true);
}
GetAllPrototypes(): DocumentController[] {
let protos: DocumentController[] = [];
let doc: Opt<DocumentController> = this;
while (doc != null) {
protos.push(doc);
doc = doc.GetPrototype();
}
return protos;
}
MakeDelegate(): DocumentController {
let delegate = new DocumentController();
delegate.SetField(KeyStore.Prototype, this);
return delegate;
}
private DocumentFieldUpdated(args: DocumentUpdatedArgs) {
if (args.key.Id in this.fieldUpdateHandlers) {
this.fieldUpdateHandlers[args.key.Id].emit(args);
}
this.FieldUpdated.emit(args);
}
AddFieldUpdatedHandler(key: KeyController, listener: Listener<DocumentUpdatedArgs>): Disposable {
if (!(key.Id in this.fieldUpdateHandlers)) {
this.fieldUpdateHandlers[key.Id] = new TypedEvent<DocumentUpdatedArgs>();
}
return this.fieldUpdateHandlers[key.Id].on(listener);
}
RemoveFieldUpdatedHandler(key: KeyController, listener: Listener<DocumentUpdatedArgs>) {
if (key.Id in this.fieldUpdateHandlers) {
this.fieldUpdateHandlers[key.Id].off(listener);
}
}
TrySetValue(value: any): boolean {
throw new Error("Method not implemented.");
}
GetValue() {
throw new Error("Method not implemented.");
}
Copy(): FieldController {
throw new Error("Method not implemented.");
}
}
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