100 lines
2.6 KiB
JavaScript
100 lines
2.6 KiB
JavaScript
'use strict';
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let DEVICE_HOST = 'localhost:8082';
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let typeConverters = {};
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exports.registerTypeConverter = registerTypeConverter;
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exports.createRealm = createRealm;
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exports.createObject = createObject;
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exports.getObjectProperty = getObjectProperty;
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exports.setObjectProperty = setObjectProperty;
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exports.getListItem = getListItem;
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exports.setListItem = setListItem;
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exports.getListSize = getListSize;
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exports.callListMethod = callListMethod;
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exports.beginTransaction = beginTransaction;
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exports.cancelTransaction = cancelTransaction;
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exports.commitTransaction = commitTransaction;
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function registerTypeConverter(type, handler) {
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typeConverters[type] = handler;
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}
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function createRealm(config) {
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return sendRequest('create_realm', config);
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}
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function createObject(realmId, type, values) {
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return sendRequest('create_object', {realmId, type, values});
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}
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function getObjectProperty(realmId, objectId, name) {
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let result = sendRequest('get_property', {realmId, objectId, name});
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return convert(result);
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}
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function setObjectProperty(realmId, objectId, name, value) {
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sendRequest('set_property', {realmId, objectId, name, value});
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}
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function getListItem(realmId, listId, index) {
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let result = sendRequest('get_list_item', {realmId, listId, index});
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return convert(result);
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}
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function setListItem(realmId, listId, index, value) {
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sendRequest('set_list_item', {realmId, listId, index, value});
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}
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function getListSize(realmId, listId) {
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return sendRequest('get_list_size', {realmId, listId});
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}
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function callListMethod(realmId, listId, name, args) {
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let result = sendRequest('call_list_method', {realmId, listId, name, arguments: args});
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return convert(result);
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}
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function beginTransaction(realmId) {
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sendRequest('begin_transaction', {realmId});
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}
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function cancelTransaction(realmId) {
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sendRequest('cancel_transaction', {realmId});
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}
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function commitTransaction(realmId) {
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sendRequest('commit_transaction', {realmId});
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}
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function convert(realmId, info) {
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let handler = typeConverters[info.type];
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return handler ? handler(realmId, info) : info.value;
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}
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function sendRequest(command, data) {
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let body = JSON.stringify(data);
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let request = new XMLHttpRequest();
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let url = 'http://' + DEVICE_HOST + '/' + command;
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request.open('POST', url, false);
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request.send(body);
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if (request.status != 200) {
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throw new Error(request.responseText);
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}
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let response = JSON.parse(request.responseText);
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if (!response || response.error) {
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throw new Error((response && response.error) || 'Invalid response for "' + command + '"');
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}
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return response.result;
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}
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