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// Copyright (c) 2011 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.
cr.define('gpu', function() {
/**
* This class provides a 'bridge' for communicating between javascript and the
* browser. When run outside of WebUI, e.g. as a regular webpage, it provides
* synthetic data to assist in testing.
* @constructor
*/
function BrowserBridge() {
// If we are not running inside WebUI, output chrome.send messages
// to the console to help with quick-iteration debugging.
this.debugMode_ = (chrome.send === undefined && console.log);
if (this.debugMode_) {
var browserBridgeTests = document.createElement('script');
browserBridgeTests.src = './gpu_internals/browser_bridge_tests.js';
document.body.appendChild(browserBridgeTests);
}
this.nextRequestId_ = 0;
this.pendingCallbacks_ = [];
this.logMessages_ = [];
// Tell c++ code that we are ready to receive GPU Info.
if (!this.debugMode_) {
chrome.send('browserBridgeInitialized');
this.beginRequestClientInfo_();
this.beginRequestLogMessages_();
}
}
BrowserBridge.prototype = {
__proto__: cr.EventTarget.prototype,
applySimulatedData_: function applySimulatedData(data) {
// set up things according to the simulated data
this.gpuInfo_ = data.gpuInfo;
this.gpuMemoryBufferInfo_ = data.gpuMemoryBufferInfo;
this.clientInfo_ = data.clientInfo;
this.logMessages_ = data.logMessages;
cr.dispatchSimpleEvent(this, 'gpuInfoUpdate');
cr.dispatchSimpleEvent(this, 'gpuMemoryBufferInfoUpdate');
cr.dispatchSimpleEvent(this, 'clientInfoChange');
cr.dispatchSimpleEvent(this, 'logMessagesChange');
},
/**
* Returns true if the page is hosted inside Chrome WebUI
* Helps have behavior conditional to emulate_webui.py
*/
get debugMode() {
return this.debugMode_;
},
/**
* Sends a message to the browser with specified args. The
* browser will reply asynchronously via the provided callback.
*/
callAsync: function(submessage, args, callback) {
var requestId = this.nextRequestId_;
this.nextRequestId_ += 1;
this.pendingCallbacks_[requestId] = callback;
if (!args) {
chrome.send('callAsync', [requestId.toString(), submessage]);
} else {
var allArgs = [requestId.toString(), submessage].concat(args);
chrome.send('callAsync', allArgs);
}
},
/**
* Called by gpu c++ code when client info is ready.
*/
onCallAsyncReply: function(requestId, args) {
if (this.pendingCallbacks_[requestId] === undefined) {
throw new Error('requestId ' + requestId + ' is not pending');
}
var callback = this.pendingCallbacks_[requestId];
callback(args);
delete this.pendingCallbacks_[requestId];
},
/**
* Get gpuInfo data.
*/
get gpuInfo() {
return this.gpuInfo_;
},
/**
* Called from gpu c++ code when GPU Info is updated.
*/
onGpuInfoUpdate: function(gpuInfo) {
this.gpuInfo_ = gpuInfo;
cr.dispatchSimpleEvent(this, 'gpuInfoUpdate');
},
/**
* Get gpuMemoryBufferInfo data.
*/
get gpuMemoryBufferInfo() {
return this.gpuMemoryBufferInfo_;
},
/**
* Called from gpu c++ code when GpuMemoryBuffer Info is updated.
*/
onGpuMemoryBufferInfoUpdate: function(gpuMemoryBufferInfo) {
this.gpuMemoryBufferInfo_ = gpuMemoryBufferInfo;
cr.dispatchSimpleEvent(this, 'gpuMemoryBufferInfoUpdate');
},
/**
* This function begins a request for the ClientInfo. If it comes back
* as undefined, then we will issue the request again in 250ms.
*/
beginRequestClientInfo_: function() {
this.callAsync('requestClientInfo', undefined, (function(data) {
if (data === undefined) { // try again in 250 ms
window.setTimeout(this.beginRequestClientInfo_.bind(this), 250);
} else {
this.clientInfo_ = data;
cr.dispatchSimpleEvent(this, 'clientInfoChange');
}
}).bind(this));
},
/**
* Returns information about the currently running Chrome build.
*/
get clientInfo() {
return this.clientInfo_;
},
/**
* This function checks for new GPU_LOG messages.
* If any are found, a refresh is triggered.
*/
beginRequestLogMessages_: function() {
this.callAsync('requestLogMessages', undefined,
(function(messages) {
if (messages.length != this.logMessages_.length) {
this.logMessages_ = messages;
cr.dispatchSimpleEvent(this, 'logMessagesChange');
}
// check again in 250 ms
window.setTimeout(this.beginRequestLogMessages_.bind(this), 250);
}).bind(this));
},
/**
* Returns an array of log messages issued by the GPU process, if any.
*/
get logMessages() {
return this.logMessages_;
},
/**
* Returns the value of the "Sandboxed" row.
*/
isSandboxedForTesting : function() {
for (i = 0; i < this.gpuInfo_.basic_info.length; ++i) {
var info = this.gpuInfo_.basic_info[i];
if (info.description == "Sandboxed")
return info.value;
}
return false;
}
};
return {
BrowserBridge: BrowserBridge
};
});
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