/js/kivi.FileDB.js - Annotieren - projekt kivitendo - wissen

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kivitendo/js/kivi.FileDB.js @ master

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+namespace("kivi.FileDB", function(ns) {
   "use strict";
   const database = 'kivi';
   const store    = 'files';
   const db_version = 1;
   // IndexedDB
   const indexedDB = window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.OIndexedDB || window.msIndexedDB;
   // Create/open database
   let db;
   let request = indexedDB.open(database, db_version);
   request.onupgradeneeded = (event) => {
     ns.create_image_store(event.target.result);
   };
   request.onerror = ns.onerror;
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+  request.aftersuccess = [];
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+  request.onsuccess = () => {
     db = request.result;
     db.onerror = (event) => {
       console.error("Error creating/accessing IndexedDB database");
       console.error(event);
     };
     // Interim solution for Google Chrome to create an objectStore. Will be deprecated
     if (db.setVersion) {
       if (db.version != db_version) {
         let setVersion = db.setVersion(db_version);
         setVersion.onsuccess = () =>  {
           ns.create_image_store(db);
         };
+      }
+    }
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+            Sven Schöling
     request.aftersuccess.forEach(f => f());
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+  };
   ns.create_image_store = function (db) {
     db.createObjectStore(store, { autoIncrement : true });
   };
   ns.store_image = function (blob, filename, success) {
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+    ns.open_rw_store((store) => {
       let put_request = store.add(blob, filename);
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+            Sven Schöling
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+      put_request.onsuccess = success;
       put_request.on_error = ns.onerror;
     });
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+  };
   ns.retrieve_image = function(key, success) {
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+    ns.open_ro_store((store) => {
       let get_request = store.get(key);
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+            Sven Schöling
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+      get_request.onsuccess = success;
       get_request.onerror = request.onerror;
     });
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+  };
   ns.retrieve_all = function(success) {
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+    ns.open_ro_store((store) => {
       let request = store.getAll();
       request.onsuccess = (event) => { success(event.target.result); };
       request.onerror = ns.error;
     });
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+  };
   ns.retrieve_all_keys = function(success) {
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+    ns.open_ro_store((store) => {
       let request = store.getAllKeys();
       request.onsuccess = (event) => { success(event.target.result); };
       request.onerror = ns.error;
     });
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+  };
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+  ns.delete_all = function(success) {
     ns.open_rw_store((store) => {
       let request = store.clear();
       request.onsuccess = success;
       request.onerror = ns.error;
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+    });
   };
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+  ns.delete_key = function(key, success) {
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+    ns.open_rw_store((store) => {
       let request = store.delete(key);
       request.onsuccess = (event) => { if (success) success(event.target.result); };
       request.onerror = ns.error;
     });
   };
   ns.open_rw_store = function(callback) {
     if (db && db_version == db.version) {
       callback(ns.open_store("readwrite"));
     } else {
       request.aftersuccess.push(() => callback(ns.open_store("readwrite")));
+    }
   };
   ns.open_ro_store = function(callback) {
     if (db && db_version == db.version) {
       callback(ns.open_store("readonly"));
     } else {
       request.aftersuccess.push(() => callback(ns.open_store("readonly")));
+    }
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+  };
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+  ns.open_store = function(mode = "readonly") {
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+    return db.transaction([store], mode).objectStore(store);
   };
   ns.onerror = (event) => {
     console.error("Error creating/accessing IndexedDB database");
     console.error(event.errorState);
   };
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+            Sven Schöling
   ns.with_db = function(success) {
     if (db && db_version == db.version) {
       success();
     } else {
       // assume the page load db init isn't done yet and push it onto the success
       request.aftersuccess.push(success);
+    }
   };
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+});