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(function() {
//Communication functions for
if (typeof chrome !== 'undefined') {
return;
}
function log(msg) {
window.postMessage({sender:'page', logMessage: msg}, '*');
}
var messageId = 1;
var callbacks = {};
function send(type, message, callback) {
var id = messageId++;
window.postMessage({sender:'page', url:location.href, messageId:id, messageType:type, payload:message}, '*');
callbacks[id] = callback;
}
window.addEventListener('message', function(message) {
if (message.data.sender == 'page') {
return; //Ignore messages we sent ourselves
}
log('page got message: ' + JSON.stringify(message.data));
var callback = callbacks[message.data.messageId];
if (callback) {
callback(message.data.payload);
delete callbacks[message.data.messageId];
}
});
//Allow Firefox users to turn on logging
window.logging = {
enable : function() {
send('log.enabled', {enabled:true});
},
disable : function() {
send('log.enabled', {enabled:false});
}
}
var req = new XMLHttpRequest();
req.overrideMimeType('application/json');
req.open("GET", 'package.json', false);
req.send();
var manifest = JSON.parse(req.responseText);
window.chrome = {
storage : {
local : {
get : function(query, callback) {
send('storage.get', query, callback);
},
set : function(data, callback) {
send('storage.set', data, callback);
}
}
},
extension : {
getURL : function(file) {
return document.location.protocol + '//' + document.location.host + '/' + file;
}
},
tabs : {
query : function(data, callback) {
send('tabs.query', data, callback);
},
create : function(data, callback) {
send('tabs.create', data, callback);
},
update : function(tabId, options, callback) {
if (!options.active) {
throw 'Unexpected update call';
}
options.tabId = tabId;
send('tabs.update', options, callback);
}
},
runtime : {
getManifest : function() {
return manifest;
}
}
};
})();
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