mirror of
https://github.com/pierre42100/ComunicWeb
synced 2024-12-26 18:58:50 +00:00
118 lines
3.2 KiB
JavaScript
118 lines
3.2 KiB
JavaScript
/**
|
|
* Network functions
|
|
*
|
|
* @author Pierre HUBERT
|
|
*/
|
|
|
|
ComunicWeb.common.network = {
|
|
|
|
/**
|
|
* @var {object} Cache container
|
|
*/
|
|
cache: {},
|
|
|
|
/**
|
|
* Make a GET request
|
|
*
|
|
* @param {String} url Destination URL
|
|
* @param {Boolean} cacheResponse Specify if data can be cached or not (optimize network)
|
|
* @param {function} GETnextAction What to do next
|
|
* @return {Boolean} False if it fails
|
|
*/
|
|
getRequest: function(url, cacheResponse, GETnextAction){
|
|
//First, check if it is required to cache the request
|
|
if(cacheResponse){
|
|
//Prepare cache entry name
|
|
var cacheEntryName = encodeURIComponent(url);
|
|
|
|
//Check if entry exists
|
|
if(this.cache[cacheEntryName]){
|
|
//Call next action with the url contained into the cache
|
|
GETnextAction(this.cache[cacheEntryName]);
|
|
|
|
//Quit function
|
|
return true;
|
|
}
|
|
}
|
|
|
|
//No cache entry where found or cache is disabled, continue
|
|
var xhrRequest = new XMLHttpRequest();
|
|
xhrRequest.open("GET", url);
|
|
|
|
xhrRequest.onreadystatechange = function(){
|
|
if(xhrRequest.readyState == 4){
|
|
//We check if it is an error
|
|
if(xhrRequest.status != 200){
|
|
//It's an error, we will quit soon, but debug message before
|
|
ComunicWeb.debug.logMessage("GET request failed on " + url + " Got response code " + xhrRequest.status);
|
|
return false;
|
|
}
|
|
|
|
//Check if it is required to cache result
|
|
if(cacheResponse){
|
|
ComunicWeb.common.network.cache[cacheEntryName] = xhrRequest.responseText;
|
|
}
|
|
|
|
ComunicWeb.debug.logMessage("GET request: " + url + " Success (" + xhrRequest.status + ")");
|
|
|
|
//Call next action
|
|
GETnextAction(xhrRequest.responseText);
|
|
}
|
|
}
|
|
|
|
//Perform request
|
|
xhrRequest.send(null);
|
|
},
|
|
|
|
/**
|
|
* Empty network cache
|
|
*
|
|
* @return {Boolean} True for a success
|
|
*/
|
|
emptyCache: function(){
|
|
this.cache = {};
|
|
|
|
//Success
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Update the status of the network
|
|
*
|
|
* @param {Boolean} success True for a successful request, false else
|
|
* @return {Boolean} True for a success
|
|
*/
|
|
setStatus: function(success){
|
|
|
|
//If the request is the success, hide error message
|
|
if(success){
|
|
//Check if an error message was present on the screen
|
|
if(byId("networkErrorMessage")){
|
|
//Hide it
|
|
byId("networkErrorMessage").style.display = "none";
|
|
}
|
|
}
|
|
|
|
//If we encountered a network error, display an error message
|
|
if(!success){
|
|
//Log state
|
|
ComunicWeb.debug.logMessage("NETWORK ERROR : It's seems a network request has just echoed... Please check the network !");
|
|
|
|
//Check if error message exists or not
|
|
if(!byId("networkErrorMessage")){
|
|
//Create error message container
|
|
var networkErrorMessage = createElem("div", document.body);
|
|
networkErrorMessage.id = "networkErrorMessage";
|
|
|
|
//Create a callout element within it
|
|
var errorName = "<i class='fa fa-warning'></i> "+" Network error";
|
|
var errorMessage = "It seems that there is a network error, and Comunic can't access to the Internet anymore... Please check your internet connexion...";
|
|
var errorCallout = ComunicWeb.common.messages.createCalloutElem(errorName, errorMessage, "danger");
|
|
networkErrorMessage.appendChild(errorCallout)
|
|
}
|
|
|
|
//Make sure the error message is visible on the screen
|
|
byId("networkErrorMessage").style.display = "block";
|
|
}
|
|
},
|
|
}; |