TweetsModel.qml Example File
demos/tweetsearch/content/TweetsModel.qml
import QtQuick 2.0
import "tweetsearch.js" as Helper
Item {
id: wrapper
property string consumerKey : ""
property string consumerSecret : ""
property string bearerToken : ""
property variant model: tweets
property string from : ""
property string phrase : ""
property int status: XMLHttpRequest.UNSENT
property bool isLoading: status === XMLHttpRequest.LOADING
property bool wasLoading: false
signal isLoaded
ListModel { id: tweets }
function encodePhrase(x) { return encodeURIComponent(x); }
function reload() {
tweets.clear()
if (from == "" && phrase == "")
return;
var req = new XMLHttpRequest;
req.open("GET", "https://api.twitter.com/1.1/search/tweets.json?from=" + from +
"&count=10&q=" + encodePhrase(phrase));
req.setRequestHeader("Authorization", "Bearer " + bearerToken);
req.onreadystatechange = function() {
status = req.readyState;
if (status === XMLHttpRequest.DONE) {
var objectArray = JSON.parse(req.responseText);
if (objectArray.errors !== undefined)
console.log("Error fetching tweets: " + objectArray.errors[0].message)
else {
for (var key in objectArray.statuses) {
var jsonObject = objectArray.statuses[key];
tweets.append(jsonObject);
}
}
if (wasLoading == true)
wrapper.isLoaded()
}
wasLoading = (status === XMLHttpRequest.LOADING);
}
req.send();
}
onPhraseChanged: reload();
onFromChanged: reload();
Component.onCompleted: {
if (consumerKey === "" || consumerSecret == "") {
bearerToken = encodeURIComponent(Helper.demoToken())
return;
}
var authReq = new XMLHttpRequest;
authReq.open("POST", "https://api.twitter.com/oauth2/token");
authReq.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
authReq.setRequestHeader("Authorization", "Basic " + Qt.btoa(consumerKey + ":" + consumerSecret));
authReq.onreadystatechange = function() {
if (authReq.readyState === XMLHttpRequest.DONE) {
var jsonResponse = JSON.parse(authReq.responseText);
if (jsonResponse.errors !== undefined)
console.log("Authentication error: " + jsonResponse.errors[0].message)
else
bearerToken = jsonResponse.access_token;
}
}
authReq.send("grant_type=client_credentials");
}
}