perspective loading indicator

packages/web/src/perspectives/PerspectiveLoadingIndicator.svelte

@@ -0,0 +1,95 @@
+<div class="lds-spinner">
+  <div />
+  <div />
+  <div />
+  <div />
+  <div />
+  <div />
+  <div />
+  <div />
+  <div />
+  <div />
+  <div />
+  <div />
+</div>
+
+<style>
+  .lds-spinner {
+    color: official;
+    display: inline-block;
+    position: relative;
+    width: 80px;
+    height: 80px;
+  }
+  .lds-spinner div {
+    transform-origin: 40px 40px;
+    animation: lds-spinner 1.2s linear infinite;
+  }
+  .lds-spinner div:after {
+    content: ' ';
+    display: block;
+    position: absolute;
+    top: 3px;
+    left: 37px;
+    width: 6px;
+    height: 18px;
+    border-radius: 20%;
+    background: var(--theme-font-2);
+  }
+  .lds-spinner div:nth-child(1) {
+    transform: rotate(0deg);
+    animation-delay: -1.1s;
+  }
+  .lds-spinner div:nth-child(2) {
+    transform: rotate(30deg);
+    animation-delay: -1s;
+  }
+  .lds-spinner div:nth-child(3) {
+    transform: rotate(60deg);
+    animation-delay: -0.9s;
+  }
+  .lds-spinner div:nth-child(4) {
+    transform: rotate(90deg);
+    animation-delay: -0.8s;
+  }
+  .lds-spinner div:nth-child(5) {
+    transform: rotate(120deg);
+    animation-delay: -0.7s;
+  }
+  .lds-spinner div:nth-child(6) {
+    transform: rotate(150deg);
+    animation-delay: -0.6s;
+  }
+  .lds-spinner div:nth-child(7) {
+    transform: rotate(180deg);
+    animation-delay: -0.5s;
+  }
+  .lds-spinner div:nth-child(8) {
+    transform: rotate(210deg);
+    animation-delay: -0.4s;
+  }
+  .lds-spinner div:nth-child(9) {
+    transform: rotate(240deg);
+    animation-delay: -0.3s;
+  }
+  .lds-spinner div:nth-child(10) {
+    transform: rotate(270deg);
+    animation-delay: -0.2s;
+  }
+  .lds-spinner div:nth-child(11) {
+    transform: rotate(300deg);
+    animation-delay: -0.1s;
+  }
+  .lds-spinner div:nth-child(12) {
+    transform: rotate(330deg);
+    animation-delay: 0s;
+  }
+  @keyframes lds-spinner {
+    0% {
+      opacity: 1;
+    }
+    100% {
+      opacity: 0;
+    }
+  }
+</style>

packages/web/src/perspectives/PerspectiveTable.svelte

@@ -27,6 +27,7 @@
   import { openJsonDocument } from '../tabs/JsonTab.svelte';
   import PerspectiveCell from './PerspectiveCell.svelte';
   import DataGridCell from '../datagrid/DataGridCell.svelte';
+  import PerspectiveLoadingIndicator from './PerspectiveLoadingIndicator.svelte';
 
   const dbg = debug('dbgate:PerspectivaTable');
   export const activator = createActivator('PerspectiveTable', true);
@@ -38,6 +39,7 @@
   let dataRows;
   let domWrapper;
   let errorMessage;
+  let isLoading = false;
 
   async function loadLevelData(node: PerspectiveTreeNode, parentRows: any[], counts) {
     dbg('load level data', counts);
@@ -103,6 +105,7 @@
     // console.log('LOADING', node);
     if (!node) return;
     const rows = [];
+    isLoading = true;
     try {
       await loadLevelData(node, rows, counts);
       dataRows = rows;
@@ -113,6 +116,7 @@
       errorMessage = err.message;
       dataRows = null;
     }
+    isLoading = false;
     // console.log('DISPLAY ROWS', rows);
     // const rows = await node.loadLevelData();
     // for (const child of node.childNodes) {
@@ -228,6 +232,12 @@
         )}
     />
   {/if}
+
+  {#if isLoading}
+    <div class="loader">
+      <PerspectiveLoadingIndicator />
+    </div>
+  {/if}
 </div>
 
 <style>
@@ -293,4 +303,10 @@
   th {
     border: 1px solid;
   } */
+
+  .loader {
+    position: absolute;
+    right: 0;
+    bottom: 0;
+  }
 </style>