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birdhouse.js
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birdhouse.js
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// --------------------------------------------------------
// birdhouse.js
//
// BirdHouse is a Titanium Developer plugin for
// authenticating and sending API calls to Twitter.
//
// Copyright 2011 (c) iEntry, Inc
//
// 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.
//
// Author: Joseph D. Purcell, iEntry Inc
// Version: 0.9
// Modified: May 2011
// --------------------------------------------------------
// INCLUDES
Ti.include('oauth.js');
Ti.include('sha1.js');
// THE CLASS
function BirdHouse(params) {
// --------------------------------------------------------
// ==================== PRIVATE ===========================
// --------------------------------------------------------
// VARIABLES
var cfg = {
// user config
oauth_consumer_key: "",
consumer_secret: "",
show_login_toolbar: false,
// system config
oauth_version: "1.0",
oauth_token: "",
oauth_signature_method: "HMAC-SHA1",
request_token: "",
request_token_secret: "",
request_verifier: "",
access_token: "",
access_token_secret: "",
shortener: {},
callback_url: ""
};
var accessor = {
consumerSecret: cfg.consumer_secret,
tokenSecret : cfg.access_token_secret
};
var authorized = false;
var osname = Ti.Platform.osname;
if ( osname === 'ipad' ) {
osname = 'iphone';
}
// --------------------------------------------------------
// set_message
//
// Creates a message to send to the Twitter service with
// the given parameters, and adds the consumer key,
// signature method, timestamp, and nonce.
//
// In Parameters:
// url (String) - the url to send the message to
// method (String) - 'POST' or 'GET'
// params (String) - parameters to add to the
// message in URL form, i.e. var1=2&var2=3
//
// Returns:
// message (Array) - the message parameters to send
// to Twitter
// --------------------------------------------------------
function set_message(url, method, params) {
var message = {
action: url,
method: (method=='GET') ? method : 'POST',
parameters: (params!=null) ? OAuth.decodeForm(params) : []
};
message.parameters.push(['oauth_consumer_key', cfg.oauth_consumer_key]);
message.parameters.push(['oauth_signature_method', cfg.oauth_signature_method]);
message.parameters.push(["oauth_timestamp", OAuth.timestamp().toFixed(0)]);
message.parameters.push(["oauth_nonce", OAuth.nonce(42)]);
message.parameters.push(["oauth_version", "1.0"]);
return message;
}
// --------------------------------------------------------
// get_request_token
//
// Sets the request token and token secret.
//
// In Parameters:
// callback (Function) - a function to call after
// the user has been authorized; note that it won't
// be executed until get_access_token()
// --------------------------------------------------------
function get_request_token(callback) {
var url = 'https://api.twitter.com/oauth/request_token';
var params = (cfg.callback_url!="")?'oauth_callback='+escape(cfg.callback_url):'';
api(url,'POST',params,function(resp){
if (resp!=false) {
var responseParams = OAuth.getParameterMap(resp);
cfg.request_token = responseParams['oauth_token'];
cfg.request_token_secret = responseParams['oauth_token_secret'];
get_request_verifier(callback);
}
},false,true,false);
}
// --------------------------------------------------------
// get_request_verifier
//
// Sets the request verifier. There is no reason to call
// this unless you have the request token and token secret.
// In fact, it should only be called from get_request_token()
// for that very reason.
//
// In Parameters:
// callback (Function) - a function to call after
// the user has been authorized; note that it won't
// be executed until get_access_token()
// --------------------------------------------------------
function get_request_verifier(callback) {
var url = "http://api.twitter.com/oauth/authorize?oauth_token="+cfg.request_token;
var win = Ti.UI.createWindow({
top: 0,
modal: true,
fullscreen: true
});
// add close button on iPhone
if (osname=='iphone' && cfg.show_login_toolbar) {
var webView = Ti.UI.createWebView({
url: url,
scalesPageToFit: true,
touchEnabled: true,
top:43,
backgroundColor: '#FFF'
});
var toolbar = Ti.UI.createToolbar({top:0});
var toolbarLabel = Ti.UI.createLabel({
text:'Login with Twitter',
font:{fontSize:16,fontWeight:'bold'},
color:'#FFF',
textAlign:'center'
});
var flexSpace = Titanium.UI.createButton({
systemButton:Titanium.UI.iPhone.SystemButton.FLEXIBLE_SPACE
});
var btnClose = Titanium.UI.createButton({
title:'Cancel',
style:Titanium.UI.iPhone.SystemButtonStyle.BORDERED
});
toolbar.items = [flexSpace,flexSpace,toolbarLabel,flexSpace,btnClose];
win.add(toolbar);
// close login window
btnClose.addEventListener('click',function(){
webView.stopLoading();
win.remove(webView);
win.close();
});
} else {
var webView = Ti.UI.createWebView({
url: url,
scalesPageToFit: true,
touchEnabled: true,
top:0,
backgroundColor: '#FFF'
});
}
var request_token = "";
var url_base = "";
var params = "";
var loading = false; // since the 'loading' property on webView is broke, use this
var loads = 0; // number of times webView has loaded a URl
var doinOurThing = false; // whether or not we are checking for oauth tokens
// add the webview to the window and open the window
win.add(webView);
win.open();
// since there is no difference between the 'success' or 'denied' page apart from content,
// we need to wait and see if Twitter redirects to the callback to determine success
function checkStatus() {
if (!doinOurThing) {
// access denied or something else was clicked
if (!loading) {
webView.stopLoading();
win.remove(webView);
win.close();
if(typeof(callback)=='function'){
callback(false);
}
return false;
}
} else {
}
}
webView.addEventListener('beforeload',function(){
loading = true;
});
webView.addEventListener('load',function(e){
loads++;
// the first time load, ignore, because it is the initial 'allow' page
// set timeout to check for something other than 'allow', if 'allow' was clicked
// then loads==3 will cancel this
if (loads==2) {
// something else was clicked
if (e.url!='https://api.twitter.com/oauth/authorize') {
webView.stopLoading();
win.remove(webView);
win.close();
if(typeof(callback)=='function'){
callback(false);
}
return false;
}
// wait a bit to see if Twitter will redirect
else {
setTimeout(checkStatus,1000);
}
}
// Twitter has redirected the page to our callback URL (most likely)
else if (loads==3) {
doinOurThing = true; // kill the timeout b/c we are doin our thing
// success!
params = "";
var parts = (e.url).replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) {
params = params + m;
if (key=='oauth_verifier') {
cfg.request_verifier = value;
}
});
if (cfg.request_verifier!="") {
// my attempt at making sure the stupid webview dies
webView.stopLoading();
win.remove(webView);
win.close();
get_access_token(callback);
return true; // we are done here
}
}
// we are done loading the page
loading = false;
});
}
// --------------------------------------------------------
// get_access_token
//
// Trades the request token, token secret, and verifier
// for a user's access token.
//
// In Parameters:
// callback (Function) - a function to call after
// the user has been authorized; this is where
// it will get executed after being authorized
// --------------------------------------------------------
function get_access_token(callback) {
var url = 'https://api.twitter.com/oauth/access_token';
api(url,'POST','oauth_token='+cfg.request_token+'&oauth_verifier='+cfg.request_verifier,function(resp){
if (resp!=false) {
var responseParams = OAuth.getParameterMap(resp);
cfg.access_token = responseParams['oauth_token'];
cfg.access_token_secret = responseParams['oauth_token_secret'];
cfg.user_id = responseParams['user_id'];
cfg.screen_name = responseParams['screen_name'];
accessor.tokenSecret = cfg.access_token_secret;
save_access_token();
authorized = load_access_token();
// execute the callback function
if(typeof(callback)=='function'){
callback(true);
}
} else {
// execute the callback function
if(typeof(callback)=='function'){
callback(false);
}
}
},false,true,false);
}
// --------------------------------------------------------
// load_access_token
//
// Loads the access token and token secret from
// 'twitter.config' to the class configuration.
// --------------------------------------------------------
function load_access_token() {
// try to find file
var file = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'twitter.config');
if (!file.exists()) {
return false;
}
// try to read file
var contents = file.read();
if (contents == null) {
return false;
}
// try to parse file into json
try {
var config = JSON.parse(contents.text);
} catch(e) {
return false;
}
// set config
if (config.access_token) {
cfg.access_token = config.access_token;
}
if (config.access_token_secret) {
cfg.access_token_secret = config.access_token_secret;
accessor.tokenSecret = cfg.access_token_secret;
}
return true;
}
// --------------------------------------------------------
// save_access_token
//
// Writes the access token and token secret to
// 'twitter.config'. Saving the config in a file instead
// of using Ti.App.Property jazz allows the config to
// stay around even if the app has been recompiled.
// --------------------------------------------------------
function save_access_token() {
// get file if it exists
var file = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'twitter.config');
// create file if it doesn't exist
if (file == null) {
file = Ti.Filesystem.createFile(Ti.Filesystem.applicationDataDirectory, 'twitter.config');
}
// write config
var config = {
access_token: cfg.access_token,
access_token_secret: cfg.access_token_secret
};
file.write(JSON.stringify(config));
}
// --------------------------------------------------------
// api
//
// Makes a Twitter API call to the given URL by the
// specified method with the given parameters.
//
// In Parameters:
// url (String) - the url to send the XHR to
// method (String) - POST or GET
// params (String) - the parameters to send in URL
// form
// callback (Function) - after execution, call
// this function and send the XHR data to it
// auth (Bool) - whether or not to force auth
// setUrlParams (Bool) - set the params in the URL
// setHeader (Bool) - set "Authorization" HTML header
//
// Notes:
// - the setUrlParams and setHeader should only need
// to be set whenever getting request tokens; values
// should be 'true' and 'false' respectively
// - take advantage of the callback function, if you
// want to tweet a message and then display an alert:
// BH.tweet("some text",function(){
// alertDialog = Ti.UI.createAlertDialog({
// message:'Tweet posted!'
// });
// alertDialog.show();
// });
//
// Returns: false on failure and the responseText on
// success.
// --------------------------------------------------------
function api(url, method, params, callback, auth, setUrlParams, setHeader) {
var finalUrl = '';
// authorize user if not authorized, and call this in the callback
if (!authorized && (typeof(auth)=='undefined' || auth===true)) {
authorize(function(retval){
if (!retval) {
// execute the callback function
if (typeof(callback)=='function') {
callback(false);
}
return false;
} else {
api(url,method,params,callback,auth);
}
});
}
// user is authorized so execute API
else {
// VALIDATE INPUT
if (method!="POST" && method!="GET") {
return false;
}
if (params==null || typeof(params)=="undefined") {
params = "";
}
// VARIABLES
var initparams = params;
if (params!=null) {
params = params + "&";
}
if (cfg.access_token!='') {
params = params + "oauth_token="+cfg.access_token;
}
var message = set_message(url, method, params);
OAuth.SignatureMethod.sign(message, accessor);
// if we are getting request tokens, all params have to be set in URL
if (typeof(setUrlParams)!='undefined' && setUrlParams==true) {
finalUrl = OAuth.addToURL(message.action, message.parameters);
}
// for all other requests only custom params need set in the URL
else {
finalUrl = OAuth.addToURL(message.action, initparams);
}
var XHR = Ti.Network.createHTTPClient();
// on success, grab the request token
XHR.onload = function() {
Ti.API.debug("api response " + XHR.responseText);
// execute the callback function
if (typeof(callback)=='function') {
callback(XHR.responseText);
}
return XHR.responseText;
};
// on error, show message
XHR.onerror = function(e) {
var message = null;
try {
message = JSON.parse(XHR.responseText).error;
}
catch (e) {
}
Ti.API.debug("api error " + XHR.status + (message ? ', ' + message : ''));
// execute the callback function
if (typeof(callback)=='function') {
callback(false, message);
}
return false;
}
XHR.open(method, finalUrl, false);
Ti.API.debug("api " + method + " " + finalUrl);
// if we are getting request tokens do not set the HTML header
if (typeof(setHeader)=='undefined' || setHeader==true) {
var init = true;
var header = "OAuth ";
for (var i=0; i<message.parameters.length; i++) {
if (init) {
init = false;
} else {
header = header + ",";
}
header = header + message.parameters[i][0] + '="' + Ti.Network.encodeURIComponent(message.parameters[i][1]) + '"';
}
XHR.setRequestHeader("Authorization", header);
Ti.API.debug("api Authorization: " + header);
}
XHR.send();
}
}
// --------------------------------------------------------
// tweet
//
// Opens a tweet dialog box for the user to make a tweet
// to their page after checking if the user is authorized
// with the app. If the user is unauthorized, the
// authorization process will be initiated first.
//
// In Parameters:
// text (String) - the default text for the text area
// callback (Function) - function to use on callback
// --------------------------------------------------------
function tweet(text,callback) {
// VALIDATE INPUT
// just in case someone only wants to send a callback
if (typeof(text)=='function' && typeof(callback)=='undefined') {
callback = text;
text = '';
}
if (typeof(text)=='undefined') {
text = '';
}
var obj = this;
obj.mytweet = text;
if (authorized === false) {
authorize(function(resp){
if (resp) {
obj.tweet(obj.mytweet);
return true;
} else {
// execute the callback function
if (typeof(callback)=='function') {
callback(false);
}
return false;
}
});
} else {
var chars = (typeof(text)!='undefined' && text!=null)?text.length:0;
var winBG = Titanium.UI.createWindow({
backgroundColor:'#000',
opacity:0.60
});
// the UI window looks completely different on iPhone vs. Android
// iPhone UI
if (osname=='iphone') {
var winTW = Titanium.UI.createWindow({
height:((Ti.Platform.displayCaps.platformHeight*0.5)-15), // half because the keyboard takes up half
width:(Ti.Platform.displayCaps.platformWidth-20),
top:10,
right:10,
left:10,
borderColor:'#224466',
borderWidth:3,
backgroundColor:'#559abb',
borderRadius:10
});
var tweet = Ti.UI.createTextArea({
value:text,
height:((Ti.Platform.displayCaps.platformHeight*0.5)-100),
width:(Ti.Platform.displayCaps.platformWidth-48),
font:{fontSize:16},
top:14,
left:14,
right:14
});
var btnTW = Ti.UI.createButton({
title:'Tweet!',
width:100,
height:30,
top:((Ti.Platform.displayCaps.platformHeight*0.5)-75),
right:24
});
var btnCancel = Ti.UI.createButton({
title:'Cancel',
width:100,
height:30,
top:((Ti.Platform.displayCaps.platformHeight*0.5)-75),
left:24
});
var charcount = Ti.UI.createLabel({
top:((Ti.Platform.displayCaps.platformHeight*0.5)-55),
left:(Ti.Platform.displayCaps.platformWidth-60), // 30 px from right side,
color:'#FFF',
text:(parseInt((140-chars))+'')
});
// show keyboard on load
winTW.addEventListener('open',function(){
tweet.focus();
});
}
// Android UI
else {
var winTW = Titanium.UI.createWindow({
height:264,
top:10,
right:10,
left:10,
borderColor:'#224466',
borderWidth:3,
backgroundColor:'#559abb',
borderRadius:3.0
});
var tweet = Ti.UI.createTextArea({
value:text,
height:160,
top:14,
left:14,
right:14
});
var btnTW = Ti.UI.createButton({
title:'Tweet',
width:100,
top:182,
right:24
});
var btnCancel = Ti.UI.createButton({
title:'Cancel',
width:100,
top:182,
left:24
});
var charcount = Ti.UI.createLabel({
bottom:10,
right:14,
color:'#FFF',
text:(parseInt((140-chars))+'')
});
}
tweet.addEventListener('change',function(e) {
chars = (140-e.value.length);
if (chars<11) {
if (charcount.color!='#D40D12') {
charcount.color = '#D40D12';
}
} else if (chars<20) {
if (charcount.color!='#5C0002') {
charcount.color = '#5C0002';
}
} else {
if (charcount.color!='#FFF') {
charcount.color = '#FFF';
}
}
charcount.text = parseInt(chars)+'';
});
btnTW.addEventListener('click',function() {
send_tweet("status="+escape(tweet.value),function(retval, message){
if (retval===false) {
// execute the callback function
if (typeof(callback)=='function') {
callback(false, message);
}
return false;
} else {
// hide the keyboard on Android because it doesn't automatically
if (osname=='android') {
Titanium.UI.Android.hideSoftKeyboard();
}
// execute the callback function
if (typeof(callback)=='function') {
callback(true);
}
winBG.close();
winTW.close();
return true;
}
});
});
btnCancel.addEventListener('click',function() {
// hide the keyboard on Android because it doesn't automatically
if (osname=='android') {
Titanium.UI.Android.hideSoftKeyboard();
}
// execute the callback function
if (typeof(callback)==='function') {
callback(false);
}
winBG.close();
winTW.close();
});
winTW.add(charcount);
winTW.add(tweet);
winTW.add(btnTW);
winTW.add(btnCancel);
winBG.open();
winTW.open();
}
}
// --------------------------------------------------------
// short_tweet
//
// Opens a tweet dialog box for the user to make a tweet
// to their page after checking if the user is authorized
// with the app. If the user is unauthorized, the
// authorization process will be initiated first. Also,
// a 'Shorten' button is provided to shorten any links
// in the tweet before posting.
//
// In Parameters:
// text (String) - the default text for the text area
// callback (Function) - function to use on callback
// --------------------------------------------------------
function short_tweet(text,callback) {
// VALIDATE INPUT
// just in case someone only wants to send a callback
if (typeof(text)=='function' && typeof(callback)=='undefined') {
callback = text;
text = '';
}
if (typeof(text)=='undefined') {
text = '';
}
var obj = this;
obj.mytweet = text;
if (authorized === false) {
authorize(function(resp){
if (resp) {
obj.short_tweet(obj.mytweet, callback);
return true;
} else {
// execute the callback function
if (typeof(callback)=='function') {
callback(false);
}
return false;
}
});
} else {
var chars = (typeof(text)!='undefined' && text!=null)?text.length:0;
var winBG = Titanium.UI.createWindow({
backgroundColor:'#000',
opacity:0.60
});
// the UI window looks completely different on iPhone vs. Android
// iPhone UI
if (osname=='iphone') {
var winTW = Titanium.UI.createWindow({
height:((Ti.Platform.displayCaps.platformHeight*0.5)-15), // half because the keyboard takes up half
width:(Ti.Platform.displayCaps.platformWidth-20),
top:10,
right:10,
left:10,
borderColor:'#224466',
borderWidth:3,
backgroundColor:'#559abb',
borderRadius:10
});
var tweet = Ti.UI.createTextArea({
value:text,
height:((Ti.Platform.displayCaps.platformHeight*0.5)-100),
width:(Ti.Platform.displayCaps.platformWidth-48),
font:{fontSize:16},
top:14,
left:14,
right:14
});
var btnShorten = Ti.UI.createButton({
title:'Shorten',
width:80,
height:30,
top:((Ti.Platform.displayCaps.platformHeight*0.5)-75)
});
var btnTW = Ti.UI.createButton({
title:'Tweet!',
width:80,
height:30,
top:((Ti.Platform.displayCaps.platformHeight*0.5)-75),
right:24
});
var btnCancel = Ti.UI.createButton({
title:'Cancel',
width:80,
height:30,
top:((Ti.Platform.displayCaps.platformHeight*0.5)-75),
left:24
});
var charcount = Ti.UI.createLabel({
top:((Ti.Platform.displayCaps.platformHeight*0.5)-55),
left:(Ti.Platform.displayCaps.platformWidth-60), // 30 px from right side,
color:'#FFF',
text:(parseInt((140-chars))+'')
});
// show keyboard on load
winTW.addEventListener('open',function(){
tweet.focus();
});
}
// Android UI
else {
var winTW = Titanium.UI.createWindow({
height:264,
top:10,
right:10,
left:10,
borderColor:'#224466',
borderWidth:3,
backgroundColor:'#559abb',
borderRadius:3.0
});
var tweet = Ti.UI.createTextArea({
value:text,
height:160,
top:14,
left:14,
right:14
});
var btnShorten = Ti.UI.createButton({
title:'Shorten',
width:100,
top:182
});
var btnTW = Ti.UI.createButton({
title:'Tweet',
width:100,
top:182,
right:24
});
var btnCancel = Ti.UI.createButton({
title:'Cancel',
width:100,
top:182,
left:24
});
var charcount = Ti.UI.createLabel({
bottom:10,
right:14,
color:'#FFF',
text:(parseInt((140-chars))+'')
});
}
tweet.addEventListener('change',function(e) {
chars = (140-e.value.length);
if (chars<11) {
if (charcount.color!='#D40D12') {
charcount.color = '#D40D12';
}
} else if (chars<20) {
if (charcount.color!='#5C0002') {
charcount.color = '#5C0002';
}
} else {
if (charcount.color!='#FFF') {
charcount.color = '#FFF';
}
}
charcount.text = parseInt(chars)+'';
});
btnShorten.addEventListener('click',function() {
var actInd = Titanium.UI.createActivityIndicator({
style:Titanium.UI.iPhone.ActivityIndicatorStyle.BIG,
height:30,
width:30,
top:30
});
indWin = Titanium.UI.createWindow();
indWin.add(actInd);
indWin.open();
actInd.show();
// replace URLs in the text with shortened URLs
var urlRegex = /(https?:\/\/[^\s]+)/gi;
var urls = [];
(tweet.value).replace(urlRegex, function(url) {
urls.push(url);
});
for (var i=0; i<urls.length; i++) {
// get shorturl
shorten_url(urls[i],function(shorturl,url){
if (shorturl!=false) {
tweet.value = (tweet.value).replace(url, shorturl);
indWin.close();
actInd.hide();
return true;
} else {
indWin.close();
actInd.hide();
return false;
}
});
}
});
btnTW.addEventListener('click',function() {
send_tweet("status="+escape(tweet.value),function(retval, message){
if (retval===false) {
// execute the callback function
if (typeof(callback)=='function') {
callback(false, message);
}
return false;
} else {
// hide the keyboard on Android because it doesn't automatically
if (osname=='android') {
Titanium.UI.Android.hideSoftKeyboard();
}
// execute the callback function
if (typeof(callback)=='function') {
callback(true);
}
winBG.close();
winTW.close();
return true;
}
});
});
btnCancel.addEventListener('click',function() {
// hide the keyboard on Android because it doesn't automatically
if (osname=='android') {
Titanium.UI.Android.hideSoftKeyboard();
}
// execute the callback function
if (typeof(callback)==='function') {
callback(false);
}
winBG.close();
winTW.close();
});
winTW.add(charcount);
winTW.add(tweet);
winTW.add(btnShorten);
winTW.add(btnTW);
winTW.add(btnCancel);
winBG.open();
winTW.open();
}
}
// --------------------------------------------------------
// send_tweet
//
// Makes an API call to Twitter to post a tweet.
//
// In Parameters:
// params (String) - the string of optional and
// required parameters in url form
// callback (Function) - function to call on completion
// --------------------------------------------------------
function send_tweet(params,callback) {
api('http://api.twitter.com/1/statuses/update.json','POST',params,function(resp, message){
if (resp!=false) {
if (typeof(callback)=='function') {
callback(true);
}
return true;
} else {
if (typeof(callback)=='function') {
callback(false, message);
}
return false;
}
});
}