added a simple IndexedDB store...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

browser.js

@@ -15,6 +15,7 @@ var page = require('./pwiki/page')
 
 var basestore = require('./pwiki/store/base')
 var localstoragestore = require('./pwiki/store/localstorage')
+var indexeddb = require('./pwiki/store/indexeddb')
 
 var pouchdbstore = require('./pwiki/store/pouchdb')
 
@@ -61,17 +62,20 @@ Promise.all([
 
 	// persistent stores...
 	//
-	store.update('@local', {
+	store.update('/Stores/local', {
 		__proto__: localstoragestore.localStorageStore,
 		data: localStorage,
 	}),
-	store.update('@session', {
+	store.update('Stores/session', {
 		__proto__: localstoragestore.localStorageStore,
 		data: sessionStorage,
 	}),
-	store.update('@pouch', {
+	store.update('Stores/pouch', {
 		__proto__: pouchdbstore.PouchDBStore,
 	}),
+	store.update('Stores/idb', {
+		__proto__: indexeddb.IndexedDBStore,
+	}),
 
 	/*/ XXX next testing...
 	store.next.update('NextPage', {

pwiki/store/indexeddb.js

@@ -0,0 +1,88 @@
+/**********************************************************************
+* 
+*
+*
+**********************************************************************/
+((typeof define)[0]=='u'?function(f){module.exports=f(require)}:define)
+(function(require){ var module={} // make module AMD/node compatible...
+/*********************************************************************/
+
+var idb = require('idb-keyval')
+
+var object = require('ig-object')
+var types = require('ig-types')
+
+var pwpath = require('../path')
+
+var base = require('./base')
+
+
+//---------------------------------------------------------------------
+
+// XXX EXPERIMENTAL, needs testing in browser...
+var IndexedDBStore =
+module.IndexedDBStore = {
+	__proto__: base.Store,
+
+	__db__: 'pwiki',
+	__store__: 'pages',
+
+	// XXX add caching of unserialized data???
+	//__data: undefined,
+	get data(){
+		return this.__data 
+			?? (this.__data = idb.createStore(this.__db__, this.__store__)) },
+	
+	__paths__: function(){
+		return idb.keys(this.data) },
+	__exists__: function(path){
+		return idb.get(path, this.data) !== undefined
+			&& path },
+	__get__: function(path){
+		return idb.get(path, this.data) },
+	// XXX should this use idb.update(..) ???
+	__update__: function(path, data={}){
+		// XXX we seem to have some trouble caching things...
+		return idb.set(path, data, this.data) },
+		/*/
+		return idb.update(path, 
+			function(value){ 
+				return data }, 
+			this.data) },
+		//*/
+	__delete__: function(path){
+		idb.del(path, this.data)
+		return this },
+
+	clear: function(){
+		idb.clear(this.data)
+		return this },
+}
+
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
+
+// XXX
+var localStorageNestedStore =
+module.localStorageNestedStore = {
+	__proto__: base.BaseStore,
+	__data__: '__pwiki_data__',
+	__cache__: '__pwiki_cache__',
+
+	__data: undefined,
+	get data(){
+		return this.__data 
+			?? (this.__data =
+				Object.assign(
+					{ __proto__: JSON.parse(localStorage[this.__data__] || '{}') },
+					JSON.parse(localStorage[this.__cache__] || '{}') )) },
+
+	// XXX do partials saves -> cache + write cache...
+	// XXX on full save merge cache and save...
+}
+
+
+
+
+/**********************************************************************
+* vim:set ts=4 sw=4 :                               */ return module })

pwiki2.html

@@ -218,6 +218,7 @@ require.config({
 			'jszip': 'node_modules/jszip/dist/jszip',
 			'pouchdb': 'node_modules/pouchdb/dist/pouchdb',
 			'showdown': 'node_modules/showdown/dist/showdown',
+			'idb-keyval': 'node_modules/idb-keyval/dist/umd',
 		}, ['ext-lib']),
 	},
 	packages: [

pwiki2.js

@@ -15,6 +15,12 @@
 * 		- images
 *
 *
+* XXX IndexedDB: after editing a page for some reason we do not see the 
+* 		final version until a full refresh -- cache???
+* XXX Chrome started spamming CORS error: 
+* 			Access to manifest at 'file:///L:/work/pWiki/manifest.json' 
+* 			from origin 'null' ...
+* 		not sure why...
 * XXX test: can we store the file handler with permissions in a ServiceWorker??
 * XXX store: add an indexedDB backend -- save on serialization...
 * 		- idb-keyval