75 lines
2.3 KiB
TypeScript
75 lines
2.3 KiB
TypeScript
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import { UIWindow } from "../ui/window";
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import { View } from "./view";
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export class ViewManager {
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private currentView: View | undefined | null;
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private views: View[];
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private window: UIWindow;
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public constructor() {
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this.views = [];
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this.window = new UIWindow("Notebrook");
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this.currentView = null;
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}
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public add(view: View) {
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this.views.push(view);
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view.onCreate();
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}
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public remove(view: View) {
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this.views.splice(this.views.indexOf(view), 1);
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view.onDestroy();
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if (view === this.currentView) this.window.remove(this.currentView.show());
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if (this.currentView) this.currentView.setActive(false);
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this.currentView = null;
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}
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public switchTo(view: View) {
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if (!this.views.includes(view)) {
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throw new Error("View not initialized");
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}
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if (this.currentView) {
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this.currentView.onDeactivate();
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this.currentView.setActive(false);
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this.window.remove(this.currentView.show());
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}
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this.currentView = view;
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this.currentView.setActive(true);
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this.currentView.onActivate();
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this.window.add(this.currentView.show());
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}
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public render(): HTMLElement|undefined {
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return this.window.show();
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}
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public push(view: View) {
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if (this.currentView) {
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this.currentView.onDeactivate();
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this.currentView.setActive(false);
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this.window.remove(this.currentView.show());
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}
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this.views.unshift(view);
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this.currentView = view;
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this.currentView.onCreate();
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this.currentView.setActive(true);
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this.currentView.onActivate();
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this.window.add(this.currentView.show());
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}
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public pop() {
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if (this.currentView) {
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this.currentView.onDeactivate();
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this.currentView.setActive(false);
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this.window.remove(this.currentView.show());
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this.currentView.onDestroy();
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}
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this.views.splice(0, 1);
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this.currentView = this.views[0];
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this.currentView.setActive(true);
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this.currentView.onActivate();
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this.window.add(this.currentView.show());
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}
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}
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