2008-09-06 Antti Koivisto <antti@apple.com>
Reviewed by Dave Hyatt.
<rdar://problem/6187043>
Don't parse full HTML user agent style sheet unless it is actually needed
<rdar://problem/6131889>
WebView is significantly more expensive to create recently
Parsing the html4.css takes significant amount of time and memory (~50kb) on application
startup. Some clients may never use most of the rules.
With this patch we use simplified UA stylesheet until we hit something it can't handle.
This avoids full stylesheet parsing on application startup (due to empty document construction)
and also makes it possible for clients with very simple demands (divs and spans only) never to load
the full style.
It also delays view source style parsing until it is used.
* css/CSSStyleSelector.cpp:
(WebCore::elementCanUseSimpleDefaultStyle):
(WebCore::CSSStyleSelector::CSSStyleSelector):
(WebCore::loadFullDefaultStyle):
(WebCore::loadSimpleDefaultStyle):
(WebCore::loadViewSourceStyle):
(WebCore::CSSStyleSelector::matchUARules):
(WebCore::CSSStyleSelector::styleForElement):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@36135 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/WebCore/ChangeLog b/WebCore/ChangeLog
index 1e34ade..3c2693e 100644
--- a/WebCore/ChangeLog
+++ b/WebCore/ChangeLog
@@ -1,3 +1,31 @@
+2008-09-06 Antti Koivisto <antti@apple.com>
+
+ Reviewed by Dave Hyatt.
+
+ <rdar://problem/6187043>
+ Don't parse full HTML user agent style sheet unless it is actually needed
+ <rdar://problem/6131889>
+ WebView is significantly more expensive to create recently
+
+ Parsing the html4.css takes significant amount of time and memory (~50kb) on application
+ startup. Some clients may never use most of the rules.
+
+ With this patch we use simplified UA stylesheet until we hit something it can't handle.
+ This avoids full stylesheet parsing on application startup (due to empty document construction)
+ and also makes it possible for clients with very simple demands (divs and spans only) never to load
+ the full style.
+
+ It also delays view source style parsing until it is used.
+
+ * css/CSSStyleSelector.cpp:
+ (WebCore::elementCanUseSimpleDefaultStyle):
+ (WebCore::CSSStyleSelector::CSSStyleSelector):
+ (WebCore::loadFullDefaultStyle):
+ (WebCore::loadSimpleDefaultStyle):
+ (WebCore::loadViewSourceStyle):
+ (WebCore::CSSStyleSelector::matchUARules):
+ (WebCore::CSSStyleSelector::styleForElement):
+
2008-09-06 Kevin Ollivier <kevino@theolliviers.com>
wx build fix.
