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