Initial commit

#pma/js/pmd/designer_db.js

@@ -0,0 +1,136 @@
+var designer_tables = [{name: "pdf_pages", key: "pg_nr", auto_inc: true},
+                       {name: "table_coords", key: "id", auto_inc: true}];
+
+var DesignerOfflineDB = (function () {
+    var designerDB = {};
+    var datastore = null;
+
+    designerDB.open = function (callback) {
+        var version = 1;
+        var request = window.indexedDB.open("pma_designer", version);
+
+        request.onupgradeneeded = function (e) {
+            var db = e.target.result;
+            e.target.transaction.onerror = designerDB.onerror;
+
+            for (var t in designer_tables) {
+                if (db.objectStoreNames.contains(designer_tables[t].name)) {
+                    db.deleteObjectStore(designer_tables[t].name);
+                }
+            }
+
+            for (var t in designer_tables) {
+                db.createObjectStore(designer_tables[t].name, {
+                    keyPath: designer_tables[t].key,
+                    autoIncrement: designer_tables[t].auto_inc
+                });
+            }
+        };
+
+        request.onsuccess = function (e) {
+            datastore = e.target.result;
+            if (typeof callback !== 'undefined' && callback !== null) {
+                callback(true);
+            }
+        };
+
+        request.onerror = designerDB.onerror;
+    };
+
+    designerDB.loadObject = function (table, id, callback) {
+        var db = datastore;
+        var transaction = db.transaction([table], 'readwrite');
+        var objStore = transaction.objectStore(table);
+        var cursorRequest = objStore.get(parseInt(id));
+
+        cursorRequest.onsuccess = function (e) {
+            callback(e.target.result);
+        };
+
+        cursorRequest.onerror = designerDB.onerror;
+    };
+
+    designerDB.loadAllObjects = function (table, callback) {
+        var db = datastore;
+        var transaction = db.transaction([table], 'readwrite');
+        var objStore = transaction.objectStore(table);
+        var keyRange = IDBKeyRange.lowerBound(0);
+        var cursorRequest = objStore.openCursor(keyRange);
+        var results = [];
+
+        transaction.oncomplete = function (e) {
+            callback(results);
+        };
+
+        cursorRequest.onsuccess = function (e) {
+            var result = e.target.result;
+            if (Boolean(result) === false) {
+                return;
+            }
+            results.push(result.value);
+            result.continue();
+        };
+
+        cursorRequest.onerror = designerDB.onerror;
+    };
+
+    designerDB.loadFirstObject = function(table, callback) {
+        var db = datastore;
+        var transaction = db.transaction([table], 'readwrite');
+        var objStore = transaction.objectStore(table);
+        var keyRange = IDBKeyRange.lowerBound(0);
+        var cursorRequest = objStore.openCursor(keyRange);
+        var firstResult = null;
+
+        transaction.oncomplete = function(e) {
+            callback(firstResult);
+        };
+
+        cursorRequest.onsuccess = function(e) {
+            var result = e.target.result;
+            if (Boolean(result) === false) {
+                return;
+            }
+            firstResult = result.value;
+        };
+
+        cursorRequest.onerror = designerDB.onerror;
+    };
+
+    designerDB.addObject = function(table, obj, callback) {
+        var db = datastore;
+        var transaction = db.transaction([table], 'readwrite');
+        var objStore = transaction.objectStore(table);
+        var request = objStore.put(obj);
+
+        request.onsuccess = function(e) {
+            if (typeof callback !== 'undefined' && callback !== null) {
+                callback(e.currentTarget.result);
+            }
+        };
+
+        request.onerror = designerDB.onerror;
+    };
+
+    designerDB.deleteObject = function(table, id, callback) {
+        var db = datastore;
+        var transaction = db.transaction([table], 'readwrite');
+        var objStore = transaction.objectStore(table);
+        var request = objStore.delete(parseInt(id));
+
+        request.onsuccess = function(e) {
+            if (typeof callback !== 'undefined' && callback !== null) {
+                callback(true);
+            }
+        };
+
+        request.onerror = designerDB.onerror;
+    };
+
+    designerDB.onerror = function(e) {
+        console.log(e);
+    };
+
+    // Export the designerDB object.
+    return designerDB;
+}());