mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2024-12-16 11:06:49 +01:00
0e45984fa0
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
470 lines
15 KiB
JavaScript
470 lines
15 KiB
JavaScript
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Set to true when the Document is loaded IFF "test=true" is in the query
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// string.
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var isTest = false;
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// Set to true when loading a "Release" NaCl module, false when loading a
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// "Debug" NaCl module.
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var isRelease = true;
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// Javascript module pattern:
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// see http://en.wikipedia.org/wiki/Unobtrusive_JavaScript#Namespaces
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// In essence, we define an anonymous function which is immediately called and
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// returns a new object. The new object contains only the exported definitions;
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// all other definitions in the anonymous function are inaccessible to external
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// code.
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var common = (function() {
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function isHostToolchain(tool) {
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return tool == 'win' || tool == 'linux' || tool == 'mac';
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}
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/**
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* Return the mime type for NaCl plugin.
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*
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* @param {string} tool The name of the toolchain, e.g. "glibc", "newlib" etc.
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* @return {string} The mime-type for the kind of NaCl plugin matching
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* the given toolchain.
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*/
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function mimeTypeForTool(tool) {
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// For NaCl modules use application/x-nacl.
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var mimetype = 'application/x-nacl';
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if (isHostToolchain(tool)) {
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// For non-NaCl PPAPI plugins use the x-ppapi-debug/release
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// mime type.
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if (isRelease)
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mimetype = 'application/x-ppapi-release';
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else
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mimetype = 'application/x-ppapi-debug';
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} else if (tool == 'pnacl' && isRelease) {
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mimetype = 'application/x-pnacl';
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}
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return mimetype;
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}
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/**
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* Check if the browser supports NaCl plugins.
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*
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* @param {string} tool The name of the toolchain, e.g. "glibc", "newlib" etc.
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* @return {bool} True if the browser supports the type of NaCl plugin
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* produced by the given toolchain.
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*/
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function browserSupportsNaCl(tool) {
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// Assume host toolchains always work with the given browser.
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// The below mime-type checking might not work with
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// --register-pepper-plugins.
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if (isHostToolchain(tool)) {
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return true;
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}
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var mimetype = mimeTypeForTool(tool);
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return navigator.mimeTypes[mimetype] !== undefined;
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}
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/**
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* Inject a script into the DOM, and call a callback when it is loaded.
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*
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* @param {string} url The url of the script to load.
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* @param {Function} onload The callback to call when the script is loaded.
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* @param {Function} onerror The callback to call if the script fails to load.
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*/
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function injectScript(url, onload, onerror) {
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var scriptEl = document.createElement('script');
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scriptEl.type = 'text/javascript';
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scriptEl.src = url;
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scriptEl.onload = onload;
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if (onerror) {
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scriptEl.addEventListener('error', onerror, false);
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}
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document.head.appendChild(scriptEl);
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}
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/**
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* Run all tests for this example.
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*
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* @param {Object} moduleEl The module DOM element.
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*/
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function runTests(moduleEl) {
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console.log('runTests()');
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common.tester = new Tester();
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// All NaCl SDK examples are OK if the example exits cleanly; (i.e. the
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// NaCl module returns 0 or calls exit(0)).
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//
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// Without this exception, the browser_tester thinks that the module
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// has crashed.
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common.tester.exitCleanlyIsOK();
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common.tester.addAsyncTest('loaded', function(test) {
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test.pass();
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});
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if (typeof window.addTests !== 'undefined') {
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window.addTests();
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}
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common.tester.waitFor(moduleEl);
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common.tester.run();
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}
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/**
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* Create the Native Client <embed> element as a child of the DOM element
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* named "listener".
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*
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* @param {string} name The name of the example.
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* @param {string} tool The name of the toolchain, e.g. "glibc", "newlib" etc.
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* @param {string} path Directory name where .nmf file can be found.
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* @param {number} width The width to create the plugin.
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* @param {number} height The height to create the plugin.
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* @param {Object} attrs Dictionary of attributes to set on the module.
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*/
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function createNaClModule(name, tool, path, width, height, attrs) {
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var moduleEl = document.createElement('embed');
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moduleEl.setAttribute('name', 'nacl_module');
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moduleEl.setAttribute('id', 'nacl_module');
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moduleEl.setAttribute('width', width);
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moduleEl.setAttribute('height', height);
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moduleEl.setAttribute('path', path);
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moduleEl.setAttribute('src', path + '/' + name + '.nmf');
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// Add any optional arguments
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if (attrs) {
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for (var key in attrs) {
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moduleEl.setAttribute(key, attrs[key]);
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}
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}
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var mimetype = mimeTypeForTool(tool);
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moduleEl.setAttribute('type', mimetype);
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// The <EMBED> element is wrapped inside a <DIV>, which has both a 'load'
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// and a 'message' event listener attached. This wrapping method is used
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// instead of attaching the event listeners directly to the <EMBED> element
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// to ensure that the listeners are active before the NaCl module 'load'
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// event fires.
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var listenerDiv = document.getElementById('listener');
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listenerDiv.appendChild(moduleEl);
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// Host plugins don't send a moduleDidLoad message. We'll fake it here.
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var isHost = isHostToolchain(tool);
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if (isHost) {
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window.setTimeout(function() {
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moduleEl.readyState = 1;
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moduleEl.dispatchEvent(new CustomEvent('loadstart'));
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moduleEl.readyState = 4;
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moduleEl.dispatchEvent(new CustomEvent('load'));
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moduleEl.dispatchEvent(new CustomEvent('loadend'));
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}, 100); // 100 ms
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}
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// This is code that is only used to test the SDK.
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if (isTest) {
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var loadNaClTest = function() {
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injectScript('nacltest.js', function() {
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runTests(moduleEl);
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});
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};
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// Try to load test.js for the example. Whether or not it exists, load
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// nacltest.js.
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injectScript('test.js', loadNaClTest, loadNaClTest);
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}
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}
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/**
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* Add the default "load" and "message" event listeners to the element with
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* id "listener".
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*
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* The "load" event is sent when the module is successfully loaded. The
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* "message" event is sent when the naclModule posts a message using
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* PPB_Messaging.PostMessage() (in C) or pp::Instance().PostMessage() (in
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* C++).
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*/
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function attachDefaultListeners() {
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var listenerDiv = document.getElementById('listener');
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listenerDiv.addEventListener('load', moduleDidLoad, true);
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listenerDiv.addEventListener('message', handleMessage, true);
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listenerDiv.addEventListener('error', handleError, true);
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listenerDiv.addEventListener('crash', handleCrash, true);
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if (typeof window.attachListeners !== 'undefined') {
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window.attachListeners();
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}
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}
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/**
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* Called when the NaCl module fails to load.
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*
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* This event listener is registered in createNaClModule above.
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*/
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function handleError(event) {
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// We can't use common.naclModule yet because the module has not been
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// loaded.
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var moduleEl = document.getElementById('nacl_module');
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updateStatus('ERROR [' + moduleEl.lastError + ']');
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}
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/**
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* Called when the Browser can not communicate with the Module
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*
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* This event listener is registered in attachDefaultListeners above.
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*/
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function handleCrash(event) {
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if (common.naclModule.exitStatus == -1) {
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updateStatus('CRASHED');
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} else {
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updateStatus('EXITED [' + common.naclModule.exitStatus + ']');
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}
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if (typeof window.handleCrash !== 'undefined') {
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window.handleCrash(common.naclModule.lastError);
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}
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}
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/**
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* Called when the NaCl module is loaded.
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*
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* This event listener is registered in attachDefaultListeners above.
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*/
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function moduleDidLoad() {
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common.naclModule = document.getElementById('nacl_module');
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updateStatus('RUNNING');
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if (typeof window.moduleDidLoad !== 'undefined') {
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window.moduleDidLoad();
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}
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}
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/**
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* Hide the NaCl module's embed element.
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*
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* We don't want to hide by default; if we do, it is harder to determine that
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* a plugin failed to load. Instead, call this function inside the example's
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* "moduleDidLoad" function.
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*
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*/
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function hideModule() {
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// Setting common.naclModule.style.display = "None" doesn't work; the
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// module will no longer be able to receive postMessages.
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common.naclModule.style.height = '0';
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}
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/**
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* Remove the NaCl module from the page.
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*/
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function removeModule() {
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common.naclModule.parentNode.removeChild(common.naclModule);
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common.naclModule = null;
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}
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/**
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* Return true when |s| starts with the string |prefix|.
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*
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* @param {string} s The string to search.
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* @param {string} prefix The prefix to search for in |s|.
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*/
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function startsWith(s, prefix) {
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// indexOf would search the entire string, lastIndexOf(p, 0) only checks at
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// the first index. See: http://stackoverflow.com/a/4579228
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return s.lastIndexOf(prefix, 0) === 0;
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}
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/** Maximum length of logMessageArray. */
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var kMaxLogMessageLength = 20;
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/** An array of messages to display in the element with id "log". */
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var logMessageArray = [];
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/**
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* Add a message to an element with id "log".
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*
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* This function is used by the default "log:" message handler.
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*
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* @param {string} message The message to log.
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*/
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function logMessage(message) {
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logMessageArray.push(message);
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if (logMessageArray.length > kMaxLogMessageLength)
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logMessageArray.shift();
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document.getElementById('log').textContent = logMessageArray.join('\n');
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console.log(message);
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}
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/**
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*/
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var defaultMessageTypes = {
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'alert': alert,
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'log': logMessage
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};
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/**
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* Called when the NaCl module sends a message to JavaScript (via
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* PPB_Messaging.PostMessage())
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*
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* This event listener is registered in createNaClModule above.
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*
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* @param {Event} message_event A message event. message_event.data contains
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* the data sent from the NaCl module.
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*/
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function handleMessage(message_event) {
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if (typeof message_event.data === 'string') {
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for (var type in defaultMessageTypes) {
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if (defaultMessageTypes.hasOwnProperty(type)) {
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if (startsWith(message_event.data, type + ':')) {
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func = defaultMessageTypes[type];
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func(message_event.data.slice(type.length + 1));
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return;
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}
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}
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}
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}
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if (typeof window.handleMessage !== 'undefined') {
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window.handleMessage(message_event);
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return;
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}
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logMessage('Unhandled message: ' + message_event.data);
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}
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/**
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* Called when the DOM content has loaded; i.e. the page's document is fully
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* parsed. At this point, we can safely query any elements in the document via
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* document.querySelector, document.getElementById, etc.
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*
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* @param {string} name The name of the example.
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* @param {string} tool The name of the toolchain, e.g. "glibc", "newlib" etc.
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* @param {string} path Directory name where .nmf file can be found.
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* @param {number} width The width to create the plugin.
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* @param {number} height The height to create the plugin.
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* @param {Object} attrs Optional dictionary of additional attributes.
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*/
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function domContentLoaded(name, tool, path, width, height, attrs) {
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// If the page loads before the Native Client module loads, then set the
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// status message indicating that the module is still loading. Otherwise,
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// do not change the status message.
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updateStatus('Page loaded.');
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if (!browserSupportsNaCl(tool)) {
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updateStatus(
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'Browser does not support NaCl (' + tool + '), or NaCl is disabled');
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} else if (common.naclModule == null) {
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updateStatus('Creating embed: ' + tool);
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// We use a non-zero sized embed to give Chrome space to place the bad
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// plug-in graphic, if there is a problem.
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width = typeof width !== 'undefined' ? width : 200;
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height = typeof height !== 'undefined' ? height : 200;
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attachDefaultListeners();
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createNaClModule(name, tool, path, width, height, attrs);
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} else {
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// It's possible that the Native Client module onload event fired
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// before the page's onload event. In this case, the status message
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// will reflect 'SUCCESS', but won't be displayed. This call will
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// display the current message.
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updateStatus('Waiting.');
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}
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}
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/** Saved text to display in the element with id 'statusField'. */
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var statusText = 'NO-STATUSES';
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/**
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* Set the global status message. If the element with id 'statusField'
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* exists, then set its HTML to the status message as well.
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*
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* @param {string} opt_message The message to set. If null or undefined, then
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* set element 'statusField' to the message from the last call to
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* updateStatus.
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*/
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function updateStatus(opt_message) {
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if (opt_message) {
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statusText = opt_message;
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}
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var statusField = document.getElementById('statusField');
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if (statusField) {
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statusField.innerHTML = statusText;
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}
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}
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// The symbols to export.
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return {
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/** A reference to the NaCl module, once it is loaded. */
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naclModule: null,
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attachDefaultListeners: attachDefaultListeners,
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domContentLoaded: domContentLoaded,
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createNaClModule: createNaClModule,
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hideModule: hideModule,
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removeModule: removeModule,
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logMessage: logMessage,
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updateStatus: updateStatus
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};
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}());
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// Listen for the DOM content to be loaded. This event is fired when parsing of
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// the page's document has finished.
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document.addEventListener('DOMContentLoaded', function() {
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var body = document.body;
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// The data-* attributes on the body can be referenced via body.dataset.
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if (body.dataset) {
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var loadFunction;
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if (!body.dataset.customLoad) {
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loadFunction = common.domContentLoaded;
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} else if (typeof window.domContentLoaded !== 'undefined') {
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loadFunction = window.domContentLoaded;
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}
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// From https://developer.mozilla.org/en-US/docs/DOM/window.location
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var searchVars = {};
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if (window.location.search.length > 1) {
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var pairs = window.location.search.substr(1).split('&');
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for (var key_ix = 0; key_ix < pairs.length; key_ix++) {
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var keyValue = pairs[key_ix].split('=');
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searchVars[unescape(keyValue[0])] =
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keyValue.length > 1 ? unescape(keyValue[1]) : '';
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}
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}
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if (loadFunction) {
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var toolchains = body.dataset.tools.split(' ');
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var configs = body.dataset.configs.split(' ');
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var attrs = {};
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if (body.dataset.attrs) {
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var attr_list = body.dataset.attrs.split(' ');
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for (var key in attr_list) {
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var attr = attr_list[key].split('=');
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var key = attr[0];
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var value = attr[1];
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attrs[key] = value;
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}
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}
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var tc = toolchains.indexOf(searchVars.tc) !== -1 ?
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searchVars.tc : toolchains[0];
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// If the config value is included in the search vars, use that.
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// Otherwise default to Release if it is valid, or the first value if
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// Release is not valid.
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if (configs.indexOf(searchVars.config) !== -1)
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var config = searchVars.config;
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else if (configs.indexOf('Release') !== -1)
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var config = 'Release';
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else
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var config = configs[0];
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var pathFormat = body.dataset.path;
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var path = pathFormat.replace('{tc}', tc).replace('{config}', config);
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isTest = searchVars.test === 'true';
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isRelease = path.toLowerCase().indexOf('release') != -1;
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loadFunction(body.dataset.name, tc, path, body.dataset.width,
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body.dataset.height, attrs);
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}
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}
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});
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