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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Custom binding for the Display Source API.
var binding = require('binding').Binding.create('displaySource');
var chrome = requireNative('chrome').GetChrome();
var lastError = require('lastError');
var natives = requireNative('display_source');
var logging = requireNative('logging');
var callbacksInfo = {};
function callbackWrapper(callback, method, message) {
if (callback == undefined)
return;
try {
if (message !== null)
lastError.set('displaySource.startSession', message, null, chrome);
callback();
} finally {
lastError.clear(chrome);
}
}
function callCompletionCallback(callbackId, error_message) {
try {
var callbackInfo = callbacksInfo[callbackId];
logging.DCHECK(callbackInfo != null);
callbackWrapper(callbackInfo.callback, callbackInfo.method, error_message);
} finally {
delete callbacksInfo[callbackId];
}
}
binding.registerCustomHook(function(bindingsAPI, extensionId) {
var apiFunctions = bindingsAPI.apiFunctions;
apiFunctions.setHandleRequest(
'startSession', function(sessionInfo, callback) {
try {
var callId = natives.StartSession(sessionInfo, callbackWrapper);
callbacksInfo[callId] = {
callback: callback,
method: 'displaySource.startSession'
};
} catch (e) {
callbackWrapper(callback, 'displaySource.startSession', e.message);
}
});
apiFunctions.setHandleRequest(
'terminateSession', function(sink_id, callback) {
try {
var callId = natives.TerminateSession(sink_id, callbackWrapper);
callbacksInfo[callId] = {
callback: callback,
method: 'displaySource.terminateSession'
};
} catch (e) {
callbackWrapper(
callback, 'displaySource.terminateSession', e.message);
}
});
});
exports.$set('binding', binding.generate());
// Called by C++.
exports.$set('callCompletionCallback', callCompletionCallback);
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