wip

src/v2/core/RenderBuilder.ts

@@ -1,73 +1,20 @@
-import { from, IEnumerable } from 'ts-linq-light';
-import { IGroupingRenderer, RenderContext } from './IGroupingRenderer';
+import { Renderer, RenderContext } from './IGroupingRenderer';
 
-export interface NextFunction {
-  count(items: IEnumerable<unknown>): number;
-  render(items: IEnumerable<unknown>): void;
+export interface Pipeline {
+  run(context: RenderContext): void;
 }
 
-interface RenderLevel {
-  renderer: IGroupingRenderer;
-  items: IEnumerable<unknown>;
-}
-
-export class RenderBuilder {
-  private levels: RenderLevel[] = [];
-
-  constructor(private context: RenderContext) {}
-
-  add(renderer: IGroupingRenderer, items: IEnumerable<unknown>): this {
-    this.levels.push({ renderer, items });
-    return this;
+export function buildPipeline(renderers: Renderer[]): Pipeline {
+  // Link renderers
+  for (let i = 0; i < renderers.length - 1; i++) {
+    renderers[i].next = renderers[i + 1];
   }
 
-  getTotalCount(): number {
-    if (this.levels.length === 0) return 0;
+  const first = renderers[0] ?? null;
 
-    const chain = this.buildChain(0);
-    return chain.count(this.levels[0].items);
-  }
-
-  build(): void {
-    if (this.levels.length === 0) return;
-
-    const chain = this.buildChain(0);
-    chain.render(this.levels[0].items);
-  }
-
-  private buildChain(index: number): NextFunction {
-    if (index >= this.levels.length) {
-      // Leaf - ingen flere levels
-      return {
-        count: (items) => from(items).count(),
-        render: () => {}
-      };
+  return {
+    run(context: RenderContext) {
+      if (first) first.render(context);
     }
-
-    const level = this.levels[index];
-    const nextChain = this.buildChain(index + 1);
-
-    return {
-      count: (items) => {
-        let total = 0;
-        for (const item of items) {
-          const childItems = this.getChildItems(index, item);
-          total += nextChain.count(childItems);
-        }
-        return total || from(items).count();
-      },
-      render: (items) => {
-        level.renderer.render(items, nextChain, this.context);
-      }
-    };
-  }
-
-  private getChildItems(levelIndex: number, _parentItem: unknown): IEnumerable<unknown> {
-    // Returnerer næste levels items - rendereren selv filtrerer baseret på parent
-    const nextLevel = this.levels[levelIndex + 1];
-    if (!nextLevel) {
-      return from([]);
-    }
-    return nextLevel.items;
-  }
+  };
 }