From 31c9ffb4b51b79394f882e5efed629c2df0600d9 Mon Sep 17 00:00:00 2001
From: Vincent Sanders <vince@netsurf-browser.org>
Date: Fri, 30 Nov 2012 12:29:54 +0000
Subject: make boxes keep reference to the DOM node that causes them

---
 render/box.c           | 10 ++++++++--
 render/box.h           |  2 ++
 render/box_construct.c |  5 ++++-
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/render/box.c b/render/box.c
index b9d059858..5dfada0c0 100644
--- a/render/box.c
+++ b/render/box.c
@@ -92,9 +92,14 @@ static int box_talloc_destructor(struct box *b)
 	if (b->href != NULL)
 		nsurl_unref(b->href);
 
-	if (b->id != NULL)
+	if (b->id != NULL) {
 		lwc_string_unref(b->id);
-	
+	}
+
+	if (b->node != NULL) {
+		dom_node_unref(b->node);
+	}
+
 	return 0;
 }
 
@@ -172,6 +177,7 @@ struct box * box_create(css_select_results *styles, css_computed_style *style,
 	box->object = NULL;
 	box->object_params = NULL;
 	box->iframe = NULL;
+	box->node = NULL;
 
 	return box;
 }
diff --git a/render/box.h b/render/box.h
index a4622e374..0953d9f88 100644
--- a/render/box.h
+++ b/render/box.h
@@ -265,6 +265,8 @@ struct box {
 
 	/** Iframe's browser_window, or NULL if none */
 	struct browser_window *iframe;
+
+	struct dom_node *node; /**< DOM node that generated this box or NULL */
 };
 
 /** Table column data. */
diff --git a/render/box_construct.c b/render/box_construct.c
index 63575876e..52c8cfee5 100644
--- a/render/box_construct.c
+++ b/render/box_construct.c
@@ -994,12 +994,15 @@ bool box_construct_element(struct box_construct_ctx *ctx,
 		return true;
 	}
 
-	/* Attach box to DOM node */
+	/* Attach DOM node to box */
 	err = dom_node_set_user_data(ctx->n, kstr_box_key, box, NULL, 
 			(void *) &old_box);
 	if (err != DOM_NO_ERR)
 		return false;
 
+	/* Attach box to DOM node */
+	box->node = dom_node_ref(ctx->n);
+
 	if (props.inline_container == NULL &&
 			(box->type == BOX_INLINE ||
 			 box->type == BOX_BR ||
-- 
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