UI update

Added animated loading placeholders for bonds

css/main.css

@@ -201,6 +201,10 @@ ul {
   justify-content: center;
 }
 
+.justify-end {
+  justify-content: flex-end;
+}
+
 .justify-right {
   margin-left: auto;
 }
@@ -380,7 +384,7 @@ ul {
   display: flex;
   align-items: center;
 }
-#usd-rate::before {
+#usd-rate:not(:empty):before {
   content: "";
   width: 1px;
   height: 2rem;
@@ -511,6 +515,49 @@ bond-transaction {
   box-shadow: 0 1rem 2rem -1rem rgba(0, 0, 0, 0.16);
 }
 
+.flex-grid {
+  display: grid;
+  gap: 1rem;
+  justify-content: start;
+  grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
+}
+
+.bond-placeholder {
+  gap: 1rem;
+  padding: 1rem;
+  border-radius: 0.3rem;
+  background-color: rgba(var(--foreground-color), 1);
+}
+.bond-placeholder .placeholder__block:first-of-type {
+  width: min(24rem, 100%);
+}
+.bond-placeholder:nth-of-type(2) .placeholder__block {
+  animation-delay: 0.3s;
+}
+.bond-placeholder:nth-of-type(3) .placeholder__block {
+  animation-delay: 0.6s;
+}
+.bond-placeholder:nth-of-type(4) .placeholder__block {
+  animation-delay: 0.8s;
+}
+
+.placeholder__block {
+  display: flex;
+  border-radius: 0.3rem;
+  min-width: 10rem;
+  padding: 1.2rem 1rem;
+  animation: pulse alternate 0.6s ease infinite;
+  background-color: rgba(var(--text-color), 0.1);
+}
+
+@keyframes pulse {
+  from {
+    opacity: 0.4;
+  }
+  to {
+    opacity: 1;
+  }
+}
 form {
   padding: 1rem;
   border-radius: 0.3rem;
@@ -595,6 +642,13 @@ form select option {
     grid-template-columns: auto 1fr auto;
     grid-template-areas: ". search .";
   }
+
+  .bond-placeholder {
+    grid-template-columns: 1fr auto;
+  }
+  .bond-placeholder > .placeholder__block:nth-of-type(2) {
+    justify-self: flex-end;
+  }
 }
 @media only screen and (min-width: 1280px) {
   .page-layout {

css/main.scss

@@ -168,6 +168,9 @@ ul{
 .justify-center{
     justify-content: center;
 }
+.justify-end{
+    justify-content: flex-end;
+}
 .justify-right{
     margin-left: auto;
 }
@@ -310,7 +313,7 @@ ul{
 #usd-rate{
     display: flex;
     align-items: center;
-    &::before{
+    &:not(:empty):before{
         content: '';
         width: 1px;
         height: 2rem;
@@ -440,6 +443,48 @@ bond-transaction{
     box-shadow: 0 1rem 2rem -1rem rgba($color: #000000, $alpha: 0.16);
 }
 
+.flex-grid{
+    display: grid;
+    gap: 1rem;
+    justify-content: start;
+    grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
+}
+.bond-placeholder{
+    gap: 1rem;
+    padding: 1rem;
+    border-radius: 0.3rem;
+    background-color: rgba(var(--foreground-color), 1);
+    .placeholder__block:first-of-type{
+        width: min(24rem, 100%);
+    }
+    &:nth-of-type(2) .placeholder__block{
+        animation-delay: 0.3s;
+    }
+    &:nth-of-type(3) .placeholder__block{
+        animation-delay: 0.6s;
+    }
+    &:nth-of-type(4) .placeholder__block{
+        animation-delay: 0.8s;
+    }
+}
+.placeholder__block{
+    display: flex;
+    border-radius: 0.3rem;
+    min-width: 10rem;
+    padding: 1.2rem 1rem;
+    animation: pulse alternate 0.6s ease infinite;
+    background-color: rgba(var(--text-color), 0.1);
+}
+
+@keyframes pulse{
+    from{
+        opacity: 0.4;
+    }
+    to{
+        opacity: 1;
+    }
+}
+
 form{
     padding: 1rem;
     border-radius: 0.3rem;
@@ -516,6 +561,12 @@ form{
         grid-template-columns: auto 1fr auto;
         grid-template-areas: '. search .';
     }
+    .bond-placeholder{
+        grid-template-columns: 1fr auto;
+        & > .placeholder__block:nth-of-type(2){
+            justify-self: flex-end;
+        }
+    }
 }
 @media only screen and (min-width: 1280px) {
     .page-layout{

index.html

@@ -8127,6 +8127,28 @@ Bitcoin.Util = {
     }
 </script>
 <script id="ui">
+
+    const render = {
+        bondPlaceholder(){
+            const bond = document.createElement('li')
+            bond.classList.add('bond-placeholder', 'grid')
+            bond.innerHTML = `
+                <div class="placeholder__block"></div>
+                <div class="placeholder__block"></div>
+                <div class="flex-grid justify-start">
+                    <div class="placeholder__block"></div>
+                    <div class="placeholder__block"></div>
+                    <div class="placeholder__block"></div>
+                </div>
+                <div class="grid flow-column gap-1 justify-end">
+                    <div class="placeholder__block"></div>
+                    <div class="placeholder__block"></div>
+                </div>
+            `
+            return bond
+        }
+    }
+
     const bondTemplate = document.createElement('template')
     bondTemplate.innerHTML = `
     <style>
@@ -9947,8 +9969,18 @@ Bitcoin.Util = {
         }, 100)
     })
 
+    function renderBondPlaceholder(){
+        getRef('bond_list').innerHTML = ``
+        const frag = document.createDocumentFragment()
+        for (let index = 0; index < 4; index++) {
+            frag.append(render.bondPlaceholder())            
+        }
+        getRef('bond_list').append(frag)
+    }
+
 </script>
 <script>
+    renderBondPlaceholder()
     function onLoadStartUp() {
         compactIDB.initDB(floGlobals.application, {
                 bonds: {},
@@ -9957,7 +9989,7 @@ Bitcoin.Util = {
             .catch(error => console.error(error))
     }
 
-    function renderData(data) {
+    async function renderData(data, wipe) {
         const period = n => {
             let y = n,
                 m = n * 12,
@@ -10023,9 +10055,7 @@ Bitcoin.Util = {
             bond.data = obj
             bond.setAttribute("title", data[i].replace(/\|/g, "\n"))
             frag.append(bond)
-
         }
-
         getRef('bond_list').append(frag)
     }
 
@@ -10124,19 +10154,23 @@ Bitcoin.Util = {
 
     const refreshBtn = getRef('refresh-btn');
     refreshBtn.addEventListener("click", evt => {
+        renderBondPlaceholder()
         getCurrentRates().then(rates => {
             USD_current = rates.USD_INR;
             BTC_current = rates.BTC_USD;
             console.log(`USD rate: ${USD_current} INR\nBTC rate: ${BTC_current} USD`);
             getRef("usd-rate").textContent = `USD: ₹${rates.USD_INR.toFixed(2)}`;
             getRef("btc-usd-rate").textContent = `BTC: $${rates.BTC_USD.toFixed(2)}`;
-            getRef("bond_list").innerHTML = '';
-            compactIDB.readAllData("bonds")
-                .then(result => renderData(result))
-                .catch(error => console.error(error))
             refreshBlockchainData()
-                .then(result => renderData(result))
+            .then(result => {
+                compactIDB.readAllData("bonds")
+                .then(result => {
+                    document.querySelectorAll('.bond-placeholder').forEach(bond => bond.remove())
+                    renderData(result)
+                })
                 .catch(error => console.error(error))
+            })
+            .catch(error => console.error(error))
         });
     });