Refactor some stuff to a service

projects/common-map/src/fm-map/services/temporal.service.ts

@@ -0,0 +1,65 @@
+import { Injectable} from '@angular/core';
+import {DatePipe} from '@angular/common';
+import {TimespanService} from '@farmmaps/common';
+import { IItemLayer, ITemporalItemLayer,TemporalItemLayer} from '../models/item.layer';
+
+
+@Injectable()
+export class TemporalService {   
+    constructor(private timespanService$:TimespanService,private datePipe$: DatePipe) {}
+
+    hasNext(itemLayer:IItemLayer):boolean {
+        let temporalItemLayer = itemLayer as  ITemporalItemLayer;
+        return temporalItemLayer && temporalItemLayer.nextItemLayer != null;
+      }
+    
+      selectedDate(itemLayer:IItemLayer):string {
+        let temporalItemLayer = itemLayer as  ITemporalItemLayer;
+        if(temporalItemLayer.selectedItemLayer) {
+          if(temporalItemLayer.selectedItemLayer.item.dataDate && temporalItemLayer.selectedItemLayer.item.dataEndDate) {
+            let sd = new Date(Date.parse(temporalItemLayer.selectedItemLayer.item.dataDate));
+            let ed = new Date(Date.parse(temporalItemLayer.selectedItemLayer.item.dataEndDate));
+            return this.timespanService$.getCaption(sd,ed);
+          } else {
+            let d = new Date(Date.parse(temporalItemLayer.selectedItemLayer.item.dataDate));
+            return this.datePipe$.transform(d, "shortDate");  
+          }
+        }
+        return "";
+      }
+    
+      nextDate(itemLayer:IItemLayer):string {
+        let temporalItemLayer = itemLayer as  ITemporalItemLayer;
+        if(temporalItemLayer.nextItemLayer.item) {
+          if(temporalItemLayer.nextItemLayer.item.dataDate && temporalItemLayer.nextItemLayer.item.dataEndDate) {
+            let sd = new Date(Date.parse(temporalItemLayer.nextItemLayer.item.dataDate));
+            let ed = new Date(Date.parse(temporalItemLayer.nextItemLayer.item.dataEndDate));
+            return this.timespanService$.getCaption(sd,ed);
+          } else {
+            let d = new Date(Date.parse(temporalItemLayer.nextItemLayer.item.dataDate));
+            return this.datePipe$.transform(d, "shortDate");  
+          }
+        }
+        return "";
+      }
+    
+      hasPrevious(itemLayer:IItemLayer):boolean {
+        let temporalItemLayer = itemLayer as  ITemporalItemLayer;
+        return temporalItemLayer && temporalItemLayer.previousItemLayer != null;
+      }
+    
+      previousDate(itemLayer:IItemLayer):string {
+        let temporalItemLayer = itemLayer as  ITemporalItemLayer;
+        if(temporalItemLayer.previousItemLayer.item)  {
+          if(temporalItemLayer.previousItemLayer.item.dataDate && temporalItemLayer.previousItemLayer.item.dataEndDate) {
+            let sd = new Date(Date.parse(temporalItemLayer.previousItemLayer.item.dataDate));
+            let ed = new Date(Date.parse(temporalItemLayer.previousItemLayer.item.dataEndDate));
+            return this.timespanService$.getCaption(sd,ed);
+          } else {
+            let d = new Date(Date.parse(temporalItemLayer.previousItemLayer.item.dataDate));
+            return this.datePipe$.transform(d, "shortDate");  
+          }
+        }
+        return "";
+      }
+}