From 5930e4bcc46f8e49c34e5630cf875f2b055502ff Mon Sep 17 00:00:00 2001
From: Michael Drake <tlsa@netsurf-browser.org>
Date: Mon, 18 Mar 2013 14:48:00 +0000
Subject: Fix bug where html conversion began before STYLE element fetch had
 been launched.

---
 render/html.c          | 21 +++++++++++++++++++--
 render/html_css.c      |  2 +-
 render/html_internal.h |  8 ++++++++
 render/html_script.c   |  4 ++--
 4 files changed, 30 insertions(+), 5 deletions(-)

(limited to 'render')

diff --git a/render/html.c b/render/html.c
index ad7ab9997..0f854bc67 100644
--- a/render/html.c
+++ b/render/html.c
@@ -1121,13 +1121,30 @@ static bool html_convert(struct content *c)
 
 	/* if there are no active fetches in progress no scripts are
 	 * being fetched or they completed already.
-	 */ 
-	if (htmlc->base.active == 0) {
+	 */
+	if (html_can_begin_conversion(htmlc)) {
 		return html_begin_conversion(htmlc);
 	}
 	return true;
 }
 
+/* Exported interface documented in html_internal.h */
+bool html_can_begin_conversion(html_content *htmlc)
+{
+	unsigned int i;
+	bool got_modified_stylesheet = false;
+
+	for (i = 0; i != htmlc->stylesheet_count; i++) {
+		if (htmlc->stylesheets[i].modified)
+			got_modified_stylesheet = true;
+	}
+
+	if (htmlc->base.active != 0 || got_modified_stylesheet)
+		return false;
+
+	return true;
+}
+
 bool
 html_begin_conversion(html_content *htmlc)
 {
diff --git a/render/html_css.c b/render/html_css.c
index a2e3a1be0..6242f9da7 100644
--- a/render/html_css.c
+++ b/render/html_css.c
@@ -143,7 +143,7 @@ html_convert_css_callback(hlcache_handle *css,
 		assert(0);
 	}
 
-	if (parent->base.active == 0) {
+	if (html_can_begin_conversion(parent)) {
 		html_begin_conversion(parent);
 	}
 
diff --git a/render/html_internal.h b/render/html_internal.h
index 90f014307..a78dc8f8a 100644
--- a/render/html_internal.h
+++ b/render/html_internal.h
@@ -220,6 +220,14 @@ void html_set_search(struct content *c, struct search_context *s);
  */
 void html_finish_conversion(html_content *htmlc);
 
+/**
+ * Test if an HTML content conversion can begin
+ *
+ * \param htmlc		html content to test
+ * \return true iff the html content conversion can begin
+ */
+bool html_can_begin_conversion(html_content *htmlc);
+
 /**
  * Begin conversion of an HTML document
  *
diff --git a/render/html_script.c b/render/html_script.c
index 9c14e84ce..89d67413e 100644
--- a/render/html_script.c
+++ b/render/html_script.c
@@ -255,7 +255,7 @@ convert_script_defer_cb(hlcache_handle *script,
 	/* if there are no active fetches remaining begin post parse
 	 * conversion
 	 */
-	if (parent->base.active == 0) {
+	if (html_can_begin_conversion(parent)) {
 		html_begin_conversion(parent);
 	}
 
@@ -349,7 +349,7 @@ convert_script_sync_cb(hlcache_handle *script,
 	/* if there are no active fetches remaining begin post parse
 	 * conversion
 	 */
-	if (parent->base.active == 0) {
+	if (html_can_begin_conversion(parent)) {
 		html_begin_conversion(parent);
 	}
 
-- 
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