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node-red/public/red/settings.js

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/**
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* Copyright 2014 IBM, Antoine Aflalo
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
RED.settings = (function () {
var hasLocalStorage = function () {
try {
return 'localStorage' in window && window['localStorage'] !== null;
} catch (e) {
return false;
}
};
var set = function (key, value) {
if (!hasLocalStorage()) {
return;
}
localStorage.setItem(key, JSON.stringify(value));
};
/**
* If the key is not set in the localStorage it returns <i>undefined</i>
* Else return the JSON parsed value
* @param key
* @returns {*}
*/
var get = function (key) {
if (!hasLocalStorage()) {
return undefined;
}
return JSON.parse(localStorage.getItem(key));
};
var remove = function (key) {
if (!hasLocalStorage()) {
return;
}
localStorage.removeItem(key);
};
var setProperties = function(data) {
for(var prop in data) {
if(data.hasOwnProperty(prop)) {
RED.settings[prop] = data[prop];
}
}
};
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var init = function (then,otherwise) {
$.ajax({
headers: {
"Accept": "application/json"
},
dataType: "json",
cache: false,
url: 'settings',
success: function (data) {
setProperties(data);
console.log("Node-RED: " + data.version);
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console.log(data);
then();
},
error: function(jqXHR,textStatus,errorThrown) {
otherwise(jqXHR.status,textStatus);
}
});
};
return {
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init: init,
set: set,
get: get,
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remove: remove
}
})
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();