feature: remember node positions after refreshing pages

src/constants/constants.js

@@ -8,6 +8,8 @@ export const MODAL_ACCT_EDIT = 'MODAL_ACCT_EDIT';
 export const MODAL_ACCT_INFO = 'MODAL_ACCT_INFO';
 export const MODAL_DELETE = 'MODAL_DELETE';
 
+export const SAVE_KEY_NAME = 'CYTOSCAPE_NODE_POSTITION';
+
 export const JUST_CREATE_ACCOUNT_HOT_DURATION_MINS = 2;
 
 export const knownLayoutChartOption = {

src/module/cytoscapeMap.js

@@ -5,6 +5,8 @@ import 'tippy.js/dist/tippy.css';
 import Gradient from 'javascript-color-gradient'; // 多個色階產生器
 import { getTimeLabel } from '@/module/timeLabel.js'; // 時間格式轉換器
 import CytoscapeStore from '@/stores/cytoscapeStore';
+import { SAVE_KEY_NAME } from '@/constants/constants.js';
+
 
 cytoscape.use( dagre );
 
@@ -227,19 +229,29 @@ export default function cytoscapeMap(mapData, dataLayerType, dataLayerOption, cu
   const cytoscapeStore = CytoscapeStore();
 
   cy.ready(() => {
-    cytoscapeStore.nodePositions.forEach(pos => {
-      const node = cy.getElementById(pos.id);
-      if (node) {
-        node.position(pos.position);
+    cytoscapeStore.loadPositionsFromStorage();
+    // 判斷localStorage是否儲存過拜訪資訊
+    // 若曾經儲存過拜訪後的座標位置，則restore位置來渲染出來
+    if(localStorage.getItem(SAVE_KEY_NAME) && JSON.parse(localStorage.getItem(SAVE_KEY_NAME))) {
+      const allGraphsRemembered =  JSON.parse(localStorage.getItem(SAVE_KEY_NAME));
+      const currentGraphNodesRemembered =  allGraphsRemembered[cytoscapeStore.currentGraphId];
+      currentGraphNodesRemembered.forEach(nodeRemembered => {
+        const nodeToDecide = cy.getElementById(nodeRemembered.id);
+        if (nodeToDecide) {
+          nodeToDecide.position(nodeRemembered.position);
         }
       });
+    } 
+    //存下此刻剛進入畫面時當前所有節點的座標位置
+    const allNodes = cy.nodes();
+    allNodes.map(nodeFirstlySave => {
+      cytoscapeStore.saveNodePosition(nodeFirstlySave.id(), nodeFirstlySave.position);
+    });
 
     // 在改變節點位置後，盡可能地記錄節點線條的位置情報
     cy.on('dragfree', 'node', (event) => {
-      const node = event.target;
-      const position = node.position();
-      cytoscapeStore.saveNodePosition(node.id(), position);
-      cytoscapeStore.savePositionsToStorage();
+      const nodeToSave = event.target;
+      cytoscapeStore.saveNodePosition(nodeToSave.id(),  nodeToSave.position());
     });
   });
 

src/stores/cytoscapeStore.js

@@ -1,60 +1,51 @@
+import { el } from 'date-fns/locale';
 import { defineStore } from 'pinia';
 
-// interface NodePosition {
-//   id: string;
-//   position: { x: number; y: number };
-//   graphId: string;
-// }
+import { SAVE_KEY_NAME } from '@/constants/constants.js';
+import { printObject } from '@/utils/jsUtils';
 
 export default defineStore('useCytoscapeStore', {
   state: () => ({
-    nodePositions: [],
+    nodePositions: {},
     currentGraphId: "",
   }),
   actions: {
     /**
      * 儲存或更新單個節點的位置資訊。
      * @param {string} id 
-     * @param {object} position {x, y}
-     * @param {string} graphId
+     * @param {object} position {x, y} position有兩個值，x與y
      */
-    saveNodePosition(id, position) {
-      const existingNode = this.nodePositions.find(node => node.id === id && node.graphId === this.currentGraphId);
-      if (existingNode) { // 如果存在，更新位置資訊
-        existingNode.position = position;
-      } else { // 如果不存在，新增一個新的位置資訊
-        this.nodePositions.push({ 
-          id,
-          position,
-          graphId: this.currentGraphId, 
-        });
+    saveNodePosition(nodeId, position) {
+      // 若是資訊曾經存在這張圖於localStorage中
+      if (localStorage.getItem(SAVE_KEY_NAME) && JSON.parse(localStorage.getItem(SAVE_KEY_NAME))[this.currentGraphId]) {
+        const nodeToSave = this.nodePositions[this.currentGraphId].find(node => node.id === nodeId);
+        if(nodeToSave) {
+          nodeToSave.position = position;
+        } else {
+          this.nodePositions[this.currentGraphId] = [... this.nodePositions[this.currentGraphId], 
+            {id: nodeId, position: position}]
         }
-    },
-    /**
-     * 根據節點 ID 獲取該節點的位置資訊
-     * @param {string} id 
-     * @returns 
-     */
-    getNodePosition(id) { // 返回該節點的位置資訊，如果不存在則返回 undefined
-      return this.nodePositions.find(node => node.id === id)?.position;
+       
+      }
+      this.savePositionsToStorage();
     },
     /**
      * 從本地存儲中加載節點位置資訊。
      */
     loadPositionsFromStorage() {
-      const storedPositions = localStorage.getItem('cy-node-positions');
-      if (storedPositions) {
-        this.nodePositions = JSON.parse(storedPositions);
+      if (localStorage.getItem(SAVE_KEY_NAME)) {
+        this.nodePositions[this.currentGraphId] = JSON.parse(localStorage.getItem(SAVE_KEY_NAME))[this.currentGraphId];
       }
     },
     /**
      * 將節點位置資訊儲存到本地存儲中。
      */
     savePositionsToStorage() {
-      localStorage.setItem('cy-node-positions', JSON.stringify(this.nodePositions));
+      localStorage.setItem(SAVE_KEY_NAME, JSON.stringify(this.nodePositions));
     },
     setCurrentGraphId(currentGraphId) {
       this.currentGraphId = currentGraphId;
+      this.nodePositions[currentGraphId] = [];
     },
   },
 });

src/utils/jsUtils.js

@@ -0,0 +1,15 @@
+export const printObject = (obj, indent = 0) => {
+    const padding = ' '.repeat(indent);
+  
+    for (const key in obj) {
+      if (obj.hasOwnProperty(key)) {
+        if (typeof obj[key] === 'object' && obj[key] !== null) {
+          console.log(`${padding}${key}: {`);
+          printObject(obj[key], indent + 2);
+          console.log(`${padding}}`);
+        } else {
+          console.log(`${padding}${key}: ${obj[key]}`);
+        }
+      }
+    }
+  }

src/views/MainContainer.vue

@@ -110,7 +110,7 @@ export default {
   async beforeRouteEnter(to, from, next) {
     const loginStore = LoginStore();
    
-    if (!getCookie("isLuciaLoggedIn")) {  
+    if (!getCookie("isLuciaLoggedIn")) {  //這裡不要用pinia的isLoggedIn來檢查，因為會有重新整理時撈不到Persisted value的值的bug
       if (getCookie('luciaRefreshToken')) {
         await loginStore.refreshToken();
         loginStore.setIsLoggedIn(true);