[yelp] Fixing issues introduced by xulrunner 1.9.2

[Shaun McCance <shaunm src gnome org>]

commit a5588114ed94d00ca64913aa5b248e09a5e13edc
Author: Shaun McCance <shaunm gnome org>
Date:   Mon Jan 25 14:21:10 2010 -0600

    Fixing issues introduced by xulrunner 1.9.2
    
    API changes in a stable release are not fun.  With 1.9.2, setting the base
    URI when opening a stream causes a uri_selected callback.  So we compare
    the URI to what we know we're loading to prevent an infinite loop.
    
    Also, #fragment links no longer trigger a uri_selected callback.  So I've
    halfway backported the xref: method used in the yelp-3-0 branch.  It's not
    pervasive.  We rewrite it pretty much immediately.  So we still use the
    slash hack, instead of the nicer method in yelp-3-0.  This should be enough
    to keep 2.x alive.

 src/yelp-html.cpp           |   11 ++++++++++-
 src/yelp-window.c           |    9 ++++++++-
 stylesheets/db2html.xsl.in  |    2 +-
 stylesheets/mal2html.xsl.in |    4 ++--
 4 files changed, 21 insertions(+), 5 deletions(-)
---
diff --git a/src/yelp-html.cpp b/src/yelp-html.cpp
index edd8788..aa9371d 100644
--- a/src/yelp-html.cpp
+++ b/src/yelp-html.cpp
@@ -24,6 +24,8 @@
 #include <mozilla-config.h>
 #include <config.h>
 
+#include <string.h>
+
 #include "yelp-gecko-services.h"
 #include "yelp-gecko-utils.h"
 #include "yelp-marshal.h"
@@ -90,13 +92,20 @@ static gint
 html_open_uri (GtkMozEmbed *embed, const gchar *uri)
 {
     YelpHtml *html = YELP_HTML (embed);
-    gboolean block_load;
+    gboolean block_load = FALSE;
 
     g_return_val_if_fail (uri != NULL, FALSE);
 
     debug_print (DB_FUNCTION, "entering\n");
     debug_print (DB_ARG, "  uri = \"%s\"\n", uri);
 
+    if (g_str_equal (html->priv->base_uri, uri)) {
+	/* As of xulrunner 1.6.2, open_uri is called in response
+	   to the base URI we pass in.
+	 */
+	return FALSE;
+    }
+
     if (!html->priv->frames_enabled) {
 	g_signal_emit (html, signals[URI_SELECTED], 0, uri, FALSE);
 	block_load = TRUE;
diff --git a/src/yelp-window.c b/src/yelp-window.c
index d436f24..401e059 100644
--- a/src/yelp-window.c
+++ b/src/yelp-window.c
@@ -1849,14 +1849,21 @@ html_uri_selected_cb (YelpHtml  *html,
 		      gboolean   handled,
 		      gpointer   user_data)
 {
+    gchar *new_uri = uri;
     YelpWindow *window = YELP_WINDOW (user_data);
 
     debug_print (DB_FUNCTION, "entering\n");
     debug_print (DB_ARG, "  uri = \"%s\"\n", uri);
 
+    if (g_str_has_prefix (uri, "xref:"))
+        new_uri = g_strconcat (window->priv->base_uri, "#", uri + 5, NULL);
+
     if (!handled) {
-	yelp_window_load (window, uri);
+	yelp_window_load (window, new_uri);
     }
+
+    if (new_uri != uri)
+        g_free (new_uri);
 }
 
 static gboolean
diff --git a/stylesheets/db2html.xsl.in b/stylesheets/db2html.xsl.in
index 1ebf44e..b68f153 100644
--- a/stylesheets/db2html.xsl.in
+++ b/stylesheets/db2html.xsl.in
@@ -68,7 +68,7 @@ FIXME: yelp:cache no longer works
 <!-- == db.xref.target == -->
 <xsl:template name="db.xref.target">
   <xsl:param name="linkend"/>
-  <xsl:value-of select="concat('#', $linkend)"/>
+  <xsl:value-of select="concat('xref:', $linkend)"/>
 </xsl:template>
 
 <!-- == db2html.css.custom == -->
diff --git a/stylesheets/mal2html.xsl.in b/stylesheets/mal2html.xsl.in
index 37560a7..9a55fcc 100644
--- a/stylesheets/mal2html.xsl.in
+++ b/stylesheets/mal2html.xsl.in
@@ -44,10 +44,10 @@
     <xsl:when test="contains($xref, '#')">
       <xsl:variable name="pageid" select="substring-before($xref, '#')"/>
       <xsl:variable name="sectionid" select="substring-after($xref, '#')"/>
-      <xsl:value-of select="concat('#', $pageid, '/', $sectionid)"/>
+      <xsl:value-of select="concat('xref:', $pageid, '/', $sectionid)"/>
     </xsl:when>
     <xsl:otherwise>
-      <xsl:value-of select="concat('#', $xref)"/>
+      <xsl:value-of select="concat('xref:', $xref)"/>
     </xsl:otherwise>
   </xsl:choose>
 </xsl:template>