Added balance checking history

css/main.css

@@ -198,10 +198,16 @@ button:disabled {
 }
 
 .icon-only {
-  padding: 0.5rem;
+  height: 100%;
+  padding: 0;
+  padding: 0.4rem;
   border-radius: 0.3rem;
   aspect-ratio: 1/1;
 }
+.icon-only .icon {
+  height: 1em;
+  width: 1em;
+}
 
 a:-webkit-any-link:focus-visible {
   outline: rgba(var(--text-color), 1) 0.1rem solid;
@@ -712,11 +718,14 @@ menu {
 }
 
 #main_header {
+  grid-area: header;
   display: grid;
   align-items: center;
   grid-template-columns: 1fr auto;
   gap: 1rem;
   padding: 1rem;
+  border-bottom: solid thin rgba(var(--text-color), 0.3);
+  grid-column: 1/-1;
 }
 
 #logo {
@@ -796,11 +805,53 @@ theme-toggle {
 
 main {
   display: grid;
-  min-height: calc(100% - 5rem);
+  height: 100%;
+  grid-template-rows: auto auto 1fr;
+  grid-template-areas: "header" "main" "search-history";
+}
+
+aside {
+  grid-area: search-history;
+  view-transition-name: search-history;
+  padding-bottom: 1.5rem;
+}
+aside > * {
+  padding: 0 1rem;
+}
+aside h4 {
+  padding: 1rem;
+}
+
+.contact {
+  display: grid;
+  gap: 0.5rem;
+  align-items: center;
+  border: solid thin rgba(var(--text-color), 0.3);
+  padding: 0.5rem;
+  border-radius: 0.5rem;
+}
+.contact sm-chips {
+  background-color: rgba(var(--text-color), 0.06);
+  padding: 0.2rem 0.3rem;
+  border-radius: 0.5rem;
+  width: -webkit-fit-content;
+  width: -moz-fit-content;
+  width: fit-content;
+}
+.contact sm-chip {
+  --padding: 0.3rem 0.5rem;
+  font-size: 0.8rem;
+  --border-radius: 0.3rem;
+}
+.contact sm-copy {
+  font-size: 0.9rem;
+  font-weight: 500;
 }
 
 #main_section {
-  align-content: center;
+  grid-area: main;
+  margin-top: 3vw;
+  align-content: start;
   padding: 1.5rem;
 }
 #main_section > * {
@@ -853,6 +904,22 @@ main {
   .popup__header {
     padding: 1rem 1.5rem 0 1.5rem;
   }
+  main {
+    grid-template-columns: 22rem 1fr;
+    grid-template-areas: "header header" "search-history main";
+    grid-template-rows: auto 1fr;
+  }
+  aside {
+    border-right: solid thin rgba(var(--text-color), 0.3);
+    overflow-y: auto;
+  }
+  aside h4 {
+    position: -webkit-sticky;
+    position: sticky;
+    top: 0;
+    background-color: rgba(var(--foreground-color), 1);
+    z-index: 1;
+  }
   #input_wrapper {
     grid-template-columns: 1fr auto;
   }

css/main.scss

@@ -185,9 +185,15 @@ button:disabled {
 }
 
 .icon-only {
-  padding: 0.5rem;
+  height: 100%;
+  padding: 0;
+  padding: 0.4rem;
   border-radius: 0.3rem;
   aspect-ratio: 1/1;
+  .icon {
+    height: 1em;
+    width: 1em;
+  }
 }
 
 a:any-link:focus-visible {
@@ -658,11 +664,14 @@ menu {
   }
 }
 #main_header {
+  grid-area: header;
   display: grid;
   align-items: center;
   grid-template-columns: 1fr auto;
   gap: 1rem;
   padding: 1rem;
+  border-bottom: solid thin rgba(var(--text-color), 0.3);
+  grid-column: 1/-1;
 }
 #logo {
   color: inherit;
@@ -737,10 +746,48 @@ theme-toggle {
 }
 main {
   display: grid;
-  min-height: calc(100% - 5rem);
+  height: 100%;
+  grid-template-rows: auto auto 1fr;
+  grid-template-areas: "header" "main" "search-history";
+}
+aside {
+  grid-area: search-history;
+  view-transition-name: search-history;
+  & > * {
+    padding: 0 1rem;
+  }
+  h4 {
+    padding: 1rem;
+  }
+  padding-bottom: 1.5rem;
+}
+.contact {
+  display: grid;
+  gap: 0.5rem;
+  align-items: center;
+  border: solid thin rgba(var(--text-color), 0.3);
+  padding: 0.5rem;
+  border-radius: 0.5rem;
+  sm-chips {
+    background-color: rgba(var(--text-color), 0.06);
+    padding: 0.2rem 0.3rem;
+    border-radius: 0.5rem;
+    width: fit-content;
+  }
+  sm-chip {
+    --padding: 0.3rem 0.5rem;
+    font-size: 0.8rem;
+    --border-radius: 0.3rem;
+  }
+  sm-copy {
+    font-size: 0.9rem;
+    font-weight: 500;
+  }
 }
 #main_section {
-  align-content: center;
+  grid-area: main;
+  margin-top: 3vw;
+  align-content: start;
   padding: 1.5rem;
   & > * {
     max-width: 36rem;
@@ -791,6 +838,21 @@ main {
   .popup__header {
     padding: 1rem 1.5rem 0 1.5rem;
   }
+  main {
+    grid-template-columns: 22rem 1fr;
+    grid-template-areas: "header header" "search-history main";
+    grid-template-rows: auto 1fr;
+  }
+  aside {
+    border-right: solid thin rgba(var(--text-color), 0.3);
+    overflow-y: auto;
+    h4 {
+      position: sticky;
+      top: 0;
+      background-color: rgba(var(--foreground-color), 1);
+      z-index: 1;
+    }
+  }
   #input_wrapper {
     grid-template-columns: 1fr auto;
   }

index.html

@@ -15,6 +15,15 @@
 
 <body>
     <sm-notifications id="notification_drawer"></sm-notifications>
+    <sm-popup id="confirmation_popup">
+        <h4 id="confirm_title"></h4>
+        <p id="confirm_message" class="breakable"></p>
+        <div class="flex align-center gap-0-5 margin-left-auto">
+            <button class="button cancel-button">Cancel</button>
+            <button class="button button--primary confirm-button">OK</button>
+        </div>
+    </sm-popup>
+    <main>
         <header id="main_header">
             <div id="logo" class="app-brand">
                 <svg id="main_logo" class="icon" viewBox="0 0 27.25 32">
@@ -83,12 +92,17 @@
             </button>
             <theme-toggle></theme-toggle>
         </header>
-    <main>
+        <aside class="flex flex-direction-column">
+            <h4>
+                Searched addresses
+            </h4>
+            <ul id="searched_addresses_list" class="grid gap-0-5"></ul>
+        </aside>
         <section id="main_section" class="grid gap-1-5">
             <h2>
                 Check USDC/USDT balance
             </h2>
-            <sm-form>
+            <sm-form oninvalid="handleInvalidSearch()">
                 <div id="input_wrapper">
                     <sm-input id="private_key_input" class="password-field flex-1" placeholder="FLO/BTC private key"
                         type="password" data-private-key animate required>
@@ -218,6 +232,7 @@
     <script src="scripts/tap_combined.js" type="text/javascript"></script>
     <script src="scripts/keccak.js" type="text/javascript"></script>
     <script src="scripts/floEthereum.js" type="text/javascript"></script>
+    <script src="scripts/compactIDB.js" type="text/javascript"></script>
     <script src="https://cdn.ethers.io/lib/ethers-5.6.umd.min.js" type="text/javascript"> </script>
     <script src="scripts/usdc_balance.js" type="text/javascript"> </script>
     <script>
@@ -240,6 +255,48 @@
         function getRef(elementId) {
             return document.getElementById(elementId)
         }
+        let zIndex = 50
+        // function required for popups or modals to appear
+        function openPopup(popupId, pinned) {
+            zIndex++
+            getRef(popupId).setAttribute('style', `z-index: ${zIndex}`)
+            getRef(popupId).show({ pinned })
+            return getRef(popupId);
+        }
+
+        // hides the popup or modal
+        function closePopup() {
+            if (popupStack.peek() === undefined)
+                return;
+            popupStack.peek().popup.hide()
+        }
+
+        document.addEventListener('popupopened', async e => {
+            switch (e.target.id) {
+                case 'saved_ids_popup':
+                    const allSavedIds = await getArrayOfSavedIds()
+                    const renderedIds = renderContactPickerList(allSavedIds)
+                    renderElem(getRef('saved_ids_picker_list'), html`${renderedIds}`)
+                    getRef('search_saved_ids_picker').focusIn()
+                    break;
+            }
+        })
+        document.addEventListener('popupclosed', e => {
+            zIndex--
+            switch (e.target.id) {
+                case 'saved_ids_popup':
+                    renderElem(getRef('saved_ids_picker_list'), html``)
+                    getRef('search_saved_ids_picker').value = ''
+                    floGlobals.addressSelectorTarget = null
+                    break;
+                case 'transaction_result_popup':
+                    renderElem(getRef('transaction_result'), html``)
+                    break;
+                case 'retrieve_flo_id_popup':
+                    getRef('recovered_flo_id_wrapper').classList.add('hidden')
+                    break;
+            }
+        })
         //Function for displaying toast notifications. pass in error for mode param if you want to show an error.
         function notify(message, mode, options = {}) {
             let icon
@@ -257,6 +314,31 @@
             }
             return getRef("notification_drawer").push(message, { icon, ...options });
         }
+        // displays a popup for asking permission. Use this instead of JS confirm
+        const getConfirmation = (title, options = {}) => {
+            return new Promise(resolve => {
+                const { message = '', cancelText = 'Cancel', confirmText = 'OK', danger = false } = options
+                openPopup('confirmation_popup', true)
+                getRef('confirm_title').innerText = title;
+                getRef('confirm_message').innerText = message;
+                const cancelButton = getRef('confirmation_popup').querySelector('.cancel-button');
+                const confirmButton = getRef('confirmation_popup').querySelector('.confirm-button')
+                confirmButton.textContent = confirmText
+                cancelButton.textContent = cancelText
+                if (danger)
+                    confirmButton.classList.add('button--danger')
+                else
+                    confirmButton.classList.remove('button--danger')
+                confirmButton.onclick = () => {
+                    closePopup()
+                    resolve(true);
+                }
+                cancelButton.onclick = () => {
+                    closePopup()
+                    resolve(false);
+                }
+            })
+        }
         function createRipple(event, target) {
             const circle = document.createElement("span");
             const diameter = Math.max(target.clientWidth, target.clientHeight);
@@ -290,13 +372,16 @@
         }
         function buttonLoader(id, show) {
             const button = typeof id === 'string' ? document.getElementById(id) : id;
-            button.disabled = show;
+            if (!button) return
+            if (!button.dataset.hasOwnProperty('wasDisabled'))
+                button.dataset.wasDisabled = button.disabled
             const animOptions = {
                 duration: 200,
                 fill: 'forwards',
                 easing: 'ease'
             }
             if (show) {
+                button.disabled = true
                 button.parentNode.append(document.createElement('sm-spinner'))
                 button.animate([
                     {
@@ -307,7 +392,17 @@
                     },
                 ], animOptions)
             } else {
-                button.getAnimations().forEach(anim => anim.cancel())
+                button.disabled = button.dataset.wasDisabled === 'true';
+                button.animate([
+                    {
+                        clipPath: 'circle(0)',
+                    },
+                    {
+                        clipPath: 'circle(100%)',
+                    },
+                ], animOptions).onfinish = (e) => {
+                    button.removeAttribute('data-original-state')
+                }
                 const potentialTarget = button.parentNode.querySelector('sm-spinner')
                 if (potentialTarget) potentialTarget.remove();
             }
@@ -332,7 +427,7 @@
                         if (!value) return { isValid: false, errorText: 'Please enter a private key' }
                         return {
                             isValid: floCrypto.getPubKeyHex(value),
-                            errorText: `Invalid private key.<br> It usually starts with "L".`
+                            errorText: `Invalid private key.<br> It usually starts with "L" or "R".`
                         }
                     }
                 }
@@ -363,9 +458,16 @@
                     createRipple(e, e.target.closest("button, .interactive"));
                 }
             });
+            compactIDB.initDB('floEthereum', {
+                contacts: {}
+            }).then((result) => {
+                renderSearchedAddressList()
+            }).catch((error) => {
+                console.error(error)
+            })
             connectToMetaMask().then(() => {
                 // setMetaMaskStatus(window.ethereum.isConnected())
-                window.ethereum.on('networkChanged', (networkId) => {
+                window.ethereum.on('chainChanged', (networkId) => {
                     if (networkId !== '1') {
                         getRef('error__title').textContent = 'Please switch MetaMask to Ethereum Mainnet'
                         getRef('main_section').classList.add('hidden')
@@ -414,18 +516,60 @@
                 });
             }
         })
-        function checkBalance() {
+        function renderSearchedAddressList() {
+            compactIDB.readAllData('contacts').then(contacts => {
+                if (Object.keys(contacts).length === 0) {
+                    renderElem(getRef('searched_addresses_list'), html`<li class="flex align-center justify-center">
+                        <p>Your searched addresses will appear here for easier access in future.</p>    
+                    </li>`)
+                    return
+                }
+                const renderedContacts = []
+                for (const floAddress in contacts) {
+                    const { ethAddress } = contacts[floAddress]
+                    renderedContacts.push(html`
+                        <li class="contact" .dataset=${{ floAddress, ethAddress }}>
+                            <sm-chips onchange=${e => e.target.closest('.contact').querySelector('sm-copy').value = e.target.value}>
+                                <sm-chip value=${floAddress} selected>FLO</sm-chip>
+                                <sm-chip value=${ethAddress}>ETH</sm-chip>
+                            </sm-chips>
+                            <sm-copy value="${floAddress}"></sm-copy>
+                            <div class="flex align-center space-between gap-0-5">
+                                <button class="button button--small" onclick=${() => deleteContact(floAddress)}>
+                                    Delete
+                                </button>
+                                <button class="button button--colored button--small" onclick=${() => checkBalance(ethAddress, floAddress)}>Check balance</button>
+                            </div>
+                        </li>`)
+                }
+                renderElem(getRef('searched_addresses_list'), html`${renderedContacts}`)
+            }).catch((error) => {
+                console.error(error)
+            })
+        }
+        function checkBalance(ethAddress, floAddress) {
+            if (!ethAddress) {
                 const keyToConvert = document.querySelector('[data-private-key]').value.trim()
                 if (/^[0-9a-fA-F]{64}$/.test(keyToConvert)) {
                     keyToConvert = coinjs.privkey2wif(keyToConvert)
                 }
                 const ethPrivateKey = coinjs.wif2privkey(keyToConvert).privkey;
-            const ethAddress = floEthereum.ethAddressFromPrivateKey(ethPrivateKey)
+                ethAddress = floEthereum.ethAddressFromPrivateKey(ethPrivateKey)
-            const floAddress = floCrypto.getFloID(keyToConvert)
+                floAddress = floCrypto.getFloID(keyToConvert)
+            }
             if (!ethAddress) return
             buttonLoader('check_balance_button', true)
             Promise.all([checkUSDCBalance(ethAddress), checkUSDTBalance(ethAddress)]).then(([usdcBalance, usdtBalance]) => {
-                console.log(usdcBalance, usdtBalance)
+                compactIDB.readData('contacts', floAddress).then(result => {
+                    if (result) return
+                    compactIDB.addData('contacts', {
+                        ethAddress,
+                    }, floAddress).then(() => {
+                        renderSearchedAddressList()
+                    }).catch((error) => {
+                        console.error(error)
+                    })
+                })
                 getRef('eth_address').value = ethAddress
                 getRef('flo_address').value = floAddress
                 getRef('usdc_balance').textContent = `${ethers.utils.formatUnits(usdcBalance, 6)} USDC`
@@ -451,6 +595,27 @@
                 buttonLoader('check_balance_button', false)
             })
         }
+        function handleInvalidSearch() {
+            if (document.startViewTransition)
+                document.startViewTransition(() => {
+                    getRef('eth_balance_wrapper').classList.add('hidden')
+                })
+            else {
+                getRef('eth_balance_wrapper').classList.add('hidden')
+            }
+
+        }
+        async function deleteContact(floAddress) {
+            const confirmed = await getConfirmation('Delete contact', {
+                message: 'Are you sure you want to delete this contact?'
+            })
+            if (!confirmed) return
+            compactIDB.removeData('contacts', floAddress).then(() => {
+                renderSearchedAddressList()
+            }).catch((error) => {
+                console.error(error)
+            })
+        }
     </script>
 </body>
 

scripts/compactIDB.js

@@ -0,0 +1,257 @@
+(function (EXPORTS) { //compactIDB v2.1.2
+    /* Compact IndexedDB operations */
+    'use strict';
+    const compactIDB = EXPORTS;
+
+    var defaultDB;
+
+    const indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
+    const IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
+    const IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;
+
+    if (!indexedDB) {
+        console.error("Your browser doesn't support a stable version of IndexedDB.");
+        return;
+    }
+
+    compactIDB.setDefaultDB = dbName => defaultDB = dbName;
+
+    Object.defineProperty(compactIDB, 'default', {
+        get: () => defaultDB,
+        set: dbName => defaultDB = dbName
+    });
+
+    function getDBversion(dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                resolve(db.version)
+                db.close()
+            }).catch(error => reject(error))
+        })
+    }
+
+    function upgradeDB(dbName, createList = null, deleteList = null) {
+        return new Promise((resolve, reject) => {
+            getDBversion(dbName).then(version => {
+                var idb = indexedDB.open(dbName, version + 1);
+                idb.onerror = (event) => reject("Error in opening IndexedDB");
+                idb.onupgradeneeded = (event) => {
+                    let db = event.target.result;
+                    if (createList instanceof Object) {
+                        if (Array.isArray(createList)) {
+                            let tmp = {}
+                            createList.forEach(o => tmp[o] = {})
+                            createList = tmp
+                        }
+                        for (let o in createList) {
+                            let obs = db.createObjectStore(o, createList[o].options || {});
+                            if (createList[o].indexes instanceof Object)
+                                for (let i in createList[o].indexes)
+                                    obs.createIndex(i, i, createList[o].indexes || {});
+                        }
+                    }
+                    if (Array.isArray(deleteList))
+                        deleteList.forEach(o => db.deleteObjectStore(o));
+                    resolve('Database upgraded')
+                }
+                idb.onsuccess = (event) => event.target.result.close();
+            }).catch(error => reject(error))
+        })
+    }
+
+    compactIDB.initDB = function (dbName, objectStores = {}) {
+        return new Promise((resolve, reject) => {
+            if (!(objectStores instanceof Object))
+                return reject('ObjectStores must be an object or array')
+            defaultDB = defaultDB || dbName;
+            var idb = indexedDB.open(dbName);
+            idb.onerror = (event) => reject("Error in opening IndexedDB");
+            idb.onsuccess = (event) => {
+                var db = event.target.result;
+                let cList = Object.values(db.objectStoreNames);
+                var obs = {},
+                    a_obs = {},
+                    d_obs = [];
+                if (!Array.isArray(objectStores))
+                    var obs = objectStores
+                else
+                    objectStores.forEach(o => obs[o] = {})
+                let nList = Object.keys(obs)
+                for (let o of nList)
+                    if (!cList.includes(o))
+                        a_obs[o] = obs[o]
+                for (let o of cList)
+                    if (!nList.includes(o))
+                        d_obs.push(o)
+                if (!Object.keys(a_obs).length && !d_obs.length)
+                    resolve("Initiated IndexedDB");
+                else
+                    upgradeDB(dbName, a_obs, d_obs)
+                        .then(result => resolve(result))
+                        .catch(error => reject(error))
+                db.close();
+            }
+        });
+    }
+
+    const openDB = compactIDB.openDB = function (dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            var idb = indexedDB.open(dbName);
+            idb.onerror = (event) => reject("Error in opening IndexedDB");
+            idb.onupgradeneeded = (event) => {
+                event.target.result.close();
+                deleteDB(dbName).then(_ => null).catch(_ => null).finally(_ => reject("Datebase not found"))
+            }
+            idb.onsuccess = (event) => resolve(event.target.result);
+        });
+    }
+
+    const deleteDB = compactIDB.deleteDB = function (dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            var deleteReq = indexedDB.deleteDatabase(dbName);;
+            deleteReq.onerror = (event) => reject("Error deleting database!");
+            deleteReq.onsuccess = (event) => resolve("Database deleted successfully");
+        });
+    }
+
+    compactIDB.writeData = function (obsName, data, key = false, dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
+                let writeReq = (key ? obs.put(data, key) : obs.put(data));
+                writeReq.onsuccess = (evt) => resolve(`Write data Successful`);
+                writeReq.onerror = (evt) => reject(
+                    `Write data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
+                );
+                db.close();
+            }).catch(error => reject(error));
+        });
+    }
+
+    compactIDB.addData = function (obsName, data, key = false, dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
+                let addReq = (key ? obs.add(data, key) : obs.add(data));
+                addReq.onsuccess = (evt) => resolve(`Add data successful`);
+                addReq.onerror = (evt) => reject(
+                    `Add data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
+                );
+                db.close();
+            }).catch(error => reject(error));
+        });
+    }
+
+    compactIDB.removeData = function (obsName, key, dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
+                let delReq = obs.delete(key);
+                delReq.onsuccess = (evt) => resolve(`Removed Data ${key}`);
+                delReq.onerror = (evt) => reject(
+                    `Remove data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
+                );
+                db.close();
+            }).catch(error => reject(error));
+        });
+    }
+
+    compactIDB.clearData = function (obsName, dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
+                let clearReq = obs.clear();
+                clearReq.onsuccess = (evt) => resolve(`Clear data Successful`);
+                clearReq.onerror = (evt) => reject(`Clear data Unsuccessful`);
+                db.close();
+            }).catch(error => reject(error));
+        });
+    }
+
+    compactIDB.readData = function (obsName, key, dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                var obs = db.transaction(obsName, "readonly").objectStore(obsName);
+                let getReq = obs.get(key);
+                getReq.onsuccess = (evt) => resolve(evt.target.result);
+                getReq.onerror = (evt) => reject(
+                    `Read data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
+                );
+                db.close();
+            }).catch(error => reject(error));
+        });
+    }
+
+    compactIDB.readAllData = function (obsName, dbName = defaultDB) {
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                var obs = db.transaction(obsName, "readonly").objectStore(obsName);
+                var tmpResult = {}
+                let curReq = obs.openCursor();
+                curReq.onsuccess = (evt) => {
+                    var cursor = evt.target.result;
+                    if (cursor) {
+                        tmpResult[cursor.primaryKey] = cursor.value;
+                        cursor.continue();
+                    } else
+                        resolve(tmpResult);
+                }
+                curReq.onerror = (evt) => reject(
+                    `Read-All data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
+                );
+                db.close();
+            }).catch(error => reject(error));
+        });
+    }
+
+    /* compactIDB.searchData = function (obsName, options = {}, dbName = defaultDB) {
+        
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                var obs = db.transaction(obsName, "readonly").objectStore(obsName);
+                var filteredResult = {}
+                let keyRange;
+                if(options.lowerKey!==null && options.upperKey!==null)
+                    keyRange = IDBKeyRange.bound(options.lowerKey, options.upperKey);
+                else if(options.lowerKey!==null)
+                    keyRange = IDBKeyRange.lowerBound(options.lowerKey);
+                else if (options.upperKey!==null)
+                    keyRange = IDBKeyRange.upperBound(options.upperBound);
+                else if (options.atKey)
+                let curReq = obs.openCursor(keyRange, )
+            }).catch(error => reject(error))
+        })
+    }*/
+
+    compactIDB.searchData = function (obsName, options = {}, dbName = defaultDB) {
+        options.lowerKey = options.atKey || options.lowerKey || 0
+        options.upperKey = options.atKey || options.upperKey || false
+        options.patternEval = options.patternEval || ((k, v) => true);
+        options.limit = options.limit || false;
+        options.reverse = options.reverse || false;
+        options.lastOnly = options.lastOnly || false
+        return new Promise((resolve, reject) => {
+            openDB(dbName).then(db => {
+                var obs = db.transaction(obsName, "readonly").objectStore(obsName);
+                var filteredResult = {}
+                let curReq = obs.openCursor(
+                    options.upperKey ? IDBKeyRange.bound(options.lowerKey, options.upperKey) : IDBKeyRange.lowerBound(options.lowerKey),
+                    options.lastOnly || options.reverse ? "prev" : "next");
+                curReq.onsuccess = (evt) => {
+                    var cursor = evt.target.result;
+                    if (!cursor || (options.limit && options.limit <= Object.keys(filteredResult).length))
+                        return resolve(filteredResult); //reached end of key list or limit reached
+                    else if (options.patternEval(cursor.primaryKey, cursor.value)) {
+                        filteredResult[cursor.primaryKey] = cursor.value;
+                        options.lastOnly ? resolve(filteredResult) : cursor.continue();
+                    } else
+                        cursor.continue();
+                }
+                curReq.onerror = (evt) => reject(`Search unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`);
+                db.close();
+            }).catch(error => reject(error));
+        });
+    }
+
+
+})(window.compactIDB = {});