Qt Quick Demo - Tweet Search | Qt 5.15

- Qt 5.15
- Qt Quick Demo - Tweet Search
- Qt 5.15.18 Reference Documentation

# Qt Quick Demo - Tweet Search

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     import QtQuick 2.0
     import "tweetsearch.mjs" as Helper

     Item {
         id: wrapper

         // Insert valid consumer key and secret tokens below
         // See https://dev.twitter.com/apps
         property string consumerKey : ""
         property string consumerSecret : ""
         property string bearerToken : ""

         property variant model: tweets
         property string from : ""
         property string phrase : ""

         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.onload = function() {
                 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);
                     }
                 }
                 wrapper.isLoaded()
             }
             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");
         }

     }