Revision: 8718
Author: [email protected]
Date: Fri Sep 3 10:10:06 2010
Log: Add Late Loading support to xsiframe linker
Review at http://gwt-code-reviews.appspot.com/807801
http://code.google.com/p/google-web-toolkit/source/detail?r=8718
Modified:
/trunk/dev/core/src/com/google/gwt/core/ext/linker/impl/computeScriptBase.js
/trunk/dev/core/src/com/google/gwt/core/ext/linker/impl/hosted.js
/trunk/dev/core/src/com/google/gwt/core/linker/CrossSiteIframeTemplate.js
=======================================
---
/trunk/dev/core/src/com/google/gwt/core/ext/linker/impl/computeScriptBase.js
Mon Mar 22 09:13:22 2010
+++
/trunk/dev/core/src/com/google/gwt/core/ext/linker/impl/computeScriptBase.js
Fri Sep 3 10:10:06 2010
@@ -24,24 +24,39 @@
* on each side.
*/
function computeScriptBase() {
- var thisScript
- ,markerId = "__gwt_marker___MODULE_NAME__"
- ,markerScript;
-
+ // First, check if the meta properties give the baseUrl
if (metaProps['baseUrl']) {
base = metaProps['baseUrl'];
return;
}
- $doc.write('<script id="' + markerId + '"></script>');
- markerScript = $doc.getElementById(markerId);
-
- // Our script element is assumed to be the closest previous script
element
- // to the marker, so start at the marker and walk backwards until we find
- // a script.
- thisScript = markerScript && markerScript.previousSibling;
- while (thisScript && thisScript.tagName != 'SCRIPT') {
- thisScript = thisScript.previousSibling;
+ // The baseUrl will be similar to the URL for this script's URL
+ var thisScript;
+
+ // By default, this script looks like something/moduleName.nocache.js
+ // so look for a script tag that looks like that
+ var scriptTags = $doc.getElementsByTagName('script');
+ for (var i = 0; i < scriptTags.length; ++i) {
+ if (scriptTags[i].src.indexOf('__MODULE_NAME__.nocache.js') != -1) {
+ thisScript = scriptTags[i];
+ }
+ }
+
+ // If the user renamed their script tag, we'll use a fancier method to
find
+ // it. Note that this will not work in the Late Loading case due to the
+ // document.write call.
+ if (!thisScript) {
+ // Put in a marker script element which should be the first script tag
after
+ // the tag we're looking for. To find it, we start at the marker and
walk
+ // backwards until we find a script.
+ var markerId = "__gwt_marker___MODULE_NAME__";
+ var markerScript;
+ $doc.write('<script id="' + markerId + '"></script>');
+ markerScript = $doc.getElementById(markerId);
+ thisScript = markerScript && markerScript.previousSibling;
+ while (thisScript && thisScript.tagName != 'SCRIPT') {
+ thisScript = thisScript.previousSibling;
+ }
}
// Gets the part of a url up to and including the 'path' portion.
=======================================
--- /trunk/dev/core/src/com/google/gwt/core/ext/linker/impl/hosted.js Fri
Aug 27 17:16:41 2010
+++ /trunk/dev/core/src/com/google/gwt/core/ext/linker/impl/hosted.js Fri
Sep 3 10:10:06 2010
@@ -333,13 +333,20 @@
doBrowserSpecificFixes();
-// DevMode currently only supports iframe based linkers
-var query = parent.location.search;
if (!findPluginXPCOM()) {
- document.write('<embed id="pluginEmbed"
type="application/x-gwt-hosted-mode" width="10" height="10">');
- document.write('</embed>');
- document.write('<object id="pluginObject"
CLASSID="CLSID:1D6156B6-002B-49E7-B5CA-C138FB843B4E">');
- document.write('</object>');
+ var embed = document.createElement('embed');
+ embed.id = 'pluginEmbed';
+ embed.type = 'application/x-gwt-hosted-mode';
+ embed.width = '10';
+ embed.height = '20';
+
+ var obj = document.createElement('object');
+ obj.id = 'pluginObject';
+ obj.CLASSID = 'CLSID:1D6156B6-002B-49E7-B5CA-C138FB843B4E';
+
+ var dochead = doc.getElementsByTagName('head')[0];
+ dochead.append(embed);
+ dochead.append(obj);
}
setTimeout(function() { $wnd[$moduleName].onScriptInstalled(gwtOnLoad) },
1);
=======================================
---
/trunk/dev/core/src/com/google/gwt/core/linker/CrossSiteIframeTemplate.js
Fri Aug 27 17:16:41 2010
+++
/trunk/dev/core/src/com/google/gwt/core/linker/CrossSiteIframeTemplate.js
Fri Sep 3 10:10:06 2010
@@ -56,24 +56,20 @@
; // end of global vars
- $stats && $stats({
- moduleName: '__MODULE_NAME__',
- sessionId: $sessionId,
- subSystem: 'startup',
- evtGroup: 'bootstrap',
- millis:(new Date()).getTime(),
- type: 'begin',
- });
-
- // ------------------ TRUE GLOBALS ------------------
-
- // Maps to synchronize the loading of styles and scripts; resources are
loaded
- // only once, even when multiple modules depend on them. This API must
not
- // change across GWT versions.
- if (!$wnd.__gwt_stylesLoaded) { $wnd.__gwt_stylesLoaded = {}; }
- if (!$wnd.__gwt_scriptsLoaded) { $wnd.__gwt_scriptsLoaded = {}; }
+ sendStats('bootstrap', 'begin');
// --------------- INTERNAL FUNCTIONS ---------------
+
+ function sendStats(evtGroupString, typeString) {
+ $stats && $stats({
+ moduleName: '__MODULE_NAME__',
+ sessionId: $sessionId,
+ subSystem: 'startup',
+ evtGroup: evtGroupString,
+ millis:(new Date()).getTime(),
+ type: typeString,
+ });
+ }
function isHostedMode() {
var result = false;
@@ -148,6 +144,53 @@
// It should have installed its code immediately after being added.
docbody.removeChild(script);
}
+
+ // Setup code so that maybeCreateFrame() is called once the body is
loaded
+ function setupWaitForBodyLoad() {
+ function isBodyLoaded() {
+ return (/loaded|complete/.test($doc.readyState));
+ }
+
+ if (isBodyLoaded()) {
+ // If this script is being added to an already loaded page, then
just set
+ // the variable to true.
+ bodyDone = true;
+ // maybeCreateFrame will not do anything since we know the compiled
script
+ // has not yet been downloaded, so we don't need to call it here
like we
+ // do when bodyDone becomes true after a callback or timer.
+ }
+
+ // If the page is not already loaded, setup some listeners and timers
to
+ // detect when it is done.
+ var onBodyDoneTimerId;
+ function onBodyDone() {
+ if (!bodyDone) {
+ bodyDone = true;
+ maybeCreateFrame();
+
+ if ($doc.removeEventListener) {
+ $doc.removeEventListener("DOMContentLoaded", onBodyDone, false);
+ }
+ if (onBodyDoneTimerId) {
+ clearInterval(onBodyDoneTimerId);
+ }
+ }
+ }
+
+ // For everyone that supports DOMContentLoaded.
+ if ($doc.addEventListener) {
+ $doc.addEventListener("DOMContentLoaded", function() {
+ onBodyDone();
+ }, false);
+ }
+
+ // Fallback. If onBodyDone() gets fired twice, it's not a big deal.
+ var onBodyDoneTimerId = setInterval(function() {
+ if (isBodyLoaded()) {
+ onBodyDone();
+ }
+ }, 50);
+ }
__PROCESS_METAS__
__COMPUTE_SCRIPT_BASE__
@@ -227,20 +270,13 @@
}
gwtOnLoadFunc(onLoadErrorFunc, '__MODULE_NAME__', base,
softPermutationId);
// Record when the module EntryPoints return.
- $stats && $stats({
- moduleName: '__MODULE_NAME__',
- sessionId: $sessionId,
- subSystem: 'startup',
- evtGroup: 'moduleStartup',
- millis:(new Date()).getTime(),
- type: 'end',
- });
+ sendStats('moduleStartup', 'end');
}
// Install code pulled in via runAsync
//
__MODULE_FUNC__.installCode = installCode;
-
+
// --------------- STRAIGHT-LINE CODE ---------------
// do it early for compile/browse rebasing
@@ -249,14 +285,7 @@
// --------------- WINDOW ONLOAD HOOK ---------------
- $stats && $stats({
- moduleName:'__MODULE_NAME__',
- sessionId: $sessionId,
- subSystem:'startup',
- evtGroup: 'bootstrap',
- millis:(new Date()).getTime(),
- type: 'selectingPermutation'
- });
+ sendStats('bootstrap', 'selectingPermutation');
var strongName;
if (!isHostedMode()) {
@@ -274,84 +303,19 @@
return;
}
}
-
- var onBodyDoneTimerId;
- function onBodyDone() {
- if (!bodyDone) {
- bodyDone = true;
-// __MODULE_STYLES_BEGIN__
- // Style resources are injected here to prevent operation aborted
errors on ie
-// __MODULE_STYLES_END__
- maybeCreateFrame();
-
- if ($doc.removeEventListener) {
- $doc.removeEventListener("DOMContentLoaded", onBodyDone, false);
- }
- if (onBodyDoneTimerId) {
- clearInterval(onBodyDoneTimerId);
- }
- }
- }
-
- // For everyone that supports DOMContentLoaded.
- if ($doc.addEventListener) {
- $doc.addEventListener("DOMContentLoaded", function() {
- onBodyDone();
- }, false);
- }
-
- // Fallback. If onBodyDone() gets fired twice, it's not a big deal.
- var onBodyDoneTimerId = setInterval(function() {
- if (/loaded|complete/.test($doc.readyState)) {
- onBodyDone();
- }
- }, 50);
-
- $stats && $stats({
- moduleName:'__MODULE_NAME__',
- sessionId: $sessionId,
- subSystem:'startup',
- evtGroup: 'bootstrap',
- millis:(new Date()).getTime(),
- type: 'end'
- });
-
- $stats && $stats({
- moduleName:'__MODULE_NAME__',
- sessionId: $sessionId,
- subSystem:'startup',
- evtGroup: 'loadExternalRefs',
- millis:(new Date()).getTime(),
- type: 'begin'
- });
-
-// __MODULE_SCRIPTS_BEGIN__
- // Script resources are injected here
-// __MODULE_SCRIPTS_END__
- // This is a bit ugly, but serves a purpose. We need to ensure that the
stats
- // script runs before the compiled script. If they are both doc.write()n
in
- // sequence, that should be the effect. Except on IE it turns out that a
- // script injected via doc.write() can execute immediately!
Adding 'defer'
- // attributes to both seemed to fix this, but caused startup problems for
- // some apps. The final solution was simply to inject the compiled script
- // from *within* the stats script, guaranteeing order at the expense of
near
- // total inscrutability :(
- var compiledScriptWrite = '';
+
+ setupWaitForBodyLoad();
+
+ sendStats('bootstrap', 'end');
+ sendStats('moduleStartup', 'moduleRequested');
+
if (!isHostedMode()) {
- compiledScriptWrite = 'document.write("<script src=\\"' + base +
strongName + '.cache.js\\"></scr" + "ipt>");';
- }
-
- $doc.write('<scr' + 'ipt><!-' + '-\n'
- + 'window.__gwtStatsEvent && window.__gwtStatsEvent({'
- + 'moduleName:"__MODULE_NAME__", sessionId:window.__gwtStatsSessionId,
subSystem:"startup",'
- + 'evtGroup: "loadExternalRefs", millis:(new Date()).getTime(),'
- + 'type: "end"});'
- + 'window.__gwtStatsEvent && window.__gwtStatsEvent({'
- + 'moduleName:"__MODULE_NAME__", sessionId:window.__gwtStatsSessionId,
subSystem:"startup",'
- + 'evtGroup: "moduleStartup", millis:(new Date()).getTime(),'
- + 'type: "moduleRequested"});'
- + compiledScriptWrite
- + '\n-' + '-></scr' + 'ipt>');
+ var script = document.createElement('script');
+ script.src = base + strongName + '.cache.js;'
+ $doc.getElementsByTagName('head')[0].appendChild(script);
+ } else {
+ maybeCreateFrame();
+ }
}
__MODULE_FUNC__();
--
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