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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.2
import TalkSchedule 1.0
Item {
id: tweetModel
property variant model: tweets
property string bearerToken : ""
property int status: XMLHttpRequest.UNSENT
property bool isLoading: status === XMLHttpRequest.LOADING
property bool wasLoading: false
ListModel {
id: tweets
}
function encodePhrase(x) { return encodeURIComponent(x); }
signal isLoaded
function reload() {
tweets.clear()
var req = new XMLHttpRequest;
req.open("GET", "https://api.twitter.com/1.1/search/tweets.json?" +
"count=10&q=" + encodePhrase(applicationClient.currentConferenceDetails.TwitterTag) + "-filter:retweets");
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)
tweetModel.isLoaded()
}
wasLoading = (status === XMLHttpRequest.LOADING);
}
req.send();
}
Component.onCompleted: {
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;
reload()
}
}
authReq.send("grant_type=client_credentials");
}
}
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