[evolution] EMailPart: Add "part-list" property.

[Matthew Barnes <mbarnes src gnome org>]

commit 6be4901bae497b2aaf6bde559661f2390adeb9fb
Author: Matthew Barnes <mbarnes redhat com>
Date:   Wed Jun 5 16:35:56 2013 -0400

    EMailPart: Add "part-list" property.
    
    This is a weak reference to the EMailPartList to which the EMailPart
    has been added.  The property is set by e_mail_part_list_add_part().
    
    New functions:
    
      e_mail_part_ref_part_list()
      e_mail_part_set_part_list()

 .../evolution-mail-formatter-sections.txt          |    2 +
 em-format/e-mail-part-list.c                       |    4 +-
 em-format/e-mail-part.c                            |   54 +++++++++++++++++++-
 em-format/e-mail-part.h                            |    6 ++
 4 files changed, 64 insertions(+), 2 deletions(-)
---
diff --git a/doc/reference/evolution-mail-formatter/evolution-mail-formatter-sections.txt 
b/doc/reference/evolution-mail-formatter/evolution-mail-formatter-sections.txt
index 0c123bd..67cf18e 100644
--- a/doc/reference/evolution-mail-formatter/evolution-mail-formatter-sections.txt
+++ b/doc/reference/evolution-mail-formatter/evolution-mail-formatter-sections.txt
@@ -249,6 +249,8 @@ e_mail_part_id_has_substr
 e_mail_part_ref_mime_part
 e_mail_part_get_mime_type
 e_mail_part_set_mime_type
+e_mail_part_ref_part_list
+e_mail_part_set_part_list
 e_mail_part_get_is_attachment
 e_mail_part_set_is_attachment
 e_mail_part_bind_dom_element
diff --git a/em-format/e-mail-part-list.c b/em-format/e-mail-part-list.c
index c866e6a..bcf7490 100644
--- a/em-format/e-mail-part-list.c
+++ b/em-format/e-mail-part-list.c
@@ -289,7 +289,7 @@ e_mail_part_list_add_part (EMailPartList *part_list,
                            EMailPart *part)
 {
        g_return_if_fail (E_IS_MAIL_PART_LIST (part_list));
-       g_return_if_fail (part != NULL);
+       g_return_if_fail (E_IS_MAIL_PART (part));
 
        g_mutex_lock (&part_list->priv->queue_lock);
 
@@ -298,6 +298,8 @@ e_mail_part_list_add_part (EMailPartList *part_list,
                g_object_ref (part));
 
        g_mutex_unlock (&part_list->priv->queue_lock);
+
+       e_mail_part_set_part_list (part, part_list);
 }
 
 EMailPart *
diff --git a/em-format/e-mail-part.c b/em-format/e-mail-part.c
index abd405d..b4ba2b3 100644
--- a/em-format/e-mail-part.c
+++ b/em-format/e-mail-part.c
@@ -31,11 +31,14 @@
 
 #include <string.h>
 
+#include "e-mail-part-list.h"
+
 #define E_MAIL_PART_GET_PRIVATE(obj) \
        (G_TYPE_INSTANCE_GET_PRIVATE \
        ((obj), E_TYPE_MAIL_PART, EMailPartPrivate))
 
 struct _EMailPartPrivate {
+       GWeakRef part_list;
        CamelMimePart *mime_part;
 
        gchar *id;
@@ -51,7 +54,8 @@ enum {
        PROP_ID,
        PROP_IS_ATTACHMENT,
        PROP_MIME_PART,
-       PROP_MIME_TYPE
+       PROP_MIME_TYPE,
+       PROP_PART_LIST
 };
 
 G_DEFINE_TYPE (
@@ -127,6 +131,12 @@ mail_part_set_property (GObject *object,
                                E_MAIL_PART (object),
                                g_value_get_string (value));
                        return;
+
+               case PROP_PART_LIST:
+                       e_mail_part_set_part_list (
+                               E_MAIL_PART (object),
+                               g_value_get_object (value));
+                       return;
        }
 
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
@@ -173,6 +183,13 @@ mail_part_get_property (GObject *object,
                                e_mail_part_get_mime_type (
                                E_MAIL_PART (object)));
                        return;
+
+               case PROP_PART_LIST:
+                       g_value_take_object (
+                               value,
+                               e_mail_part_ref_part_list (
+                               E_MAIL_PART (object)));
+                       return;
        }
 
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
@@ -185,6 +202,8 @@ mail_part_dispose (GObject *object)
 
        priv = E_MAIL_PART_GET_PRIVATE (object);
 
+       g_weak_ref_set (&priv->part_list, NULL);
+
        g_clear_object (&priv->mime_part);
 
        /* Chain up to parent's dispose() method. */
@@ -278,6 +297,17 @@ e_mail_part_class_init (EMailPartClass *class)
                        NULL,
                        G_PARAM_READWRITE |
                        G_PARAM_STATIC_STRINGS));
+
+       g_object_class_install_property (
+               object_class,
+               PROP_PART_LIST,
+               g_param_spec_object (
+                       "part-list",
+                       "Part List",
+                       "The part list that owns the part",
+                       E_TYPE_MAIL_PART_LIST,
+                       G_PARAM_READWRITE |
+                       G_PARAM_STATIC_STRINGS));
 }
 
 static void
@@ -400,6 +430,28 @@ e_mail_part_set_mime_type (EMailPart *part,
        g_object_notify (G_OBJECT (part), "mime-type");
 }
 
+EMailPartList *
+e_mail_part_ref_part_list (EMailPart *part)
+{
+       g_return_val_if_fail (E_IS_MAIL_PART (part), NULL);
+
+       return g_weak_ref_get (&part->priv->part_list);
+}
+
+void
+e_mail_part_set_part_list (EMailPart *part,
+                           EMailPartList *part_list)
+{
+       g_return_if_fail (E_IS_MAIL_PART (part));
+
+       if (part_list != NULL)
+               g_return_if_fail (E_IS_MAIL_PART_LIST (part_list));
+
+       g_weak_ref_set (&part->priv->part_list, part_list);
+
+       g_object_notify (G_OBJECT (part), "part-list");
+}
+
 gboolean
 e_mail_part_get_is_attachment (EMailPart *part)
 {
diff --git a/em-format/e-mail-part.h b/em-format/e-mail-part.h
index f710f40..75057c2 100644
--- a/em-format/e-mail-part.h
+++ b/em-format/e-mail-part.h
@@ -47,6 +47,8 @@
 
 G_BEGIN_DECLS
 
+struct _EMailPartList;
+
 typedef struct _EMailPart EMailPart;
 typedef struct _EMailPartClass EMailPartClass;
 typedef struct _EMailPartPrivate EMailPartPrivate;
@@ -106,6 +108,10 @@ CamelMimePart *    e_mail_part_ref_mime_part       (EMailPart *part);
 const gchar *  e_mail_part_get_mime_type       (EMailPart *part);
 void           e_mail_part_set_mime_type       (EMailPart *part,
                                                 const gchar *mime_type);
+struct _EMailPartList *
+               e_mail_part_ref_part_list       (EMailPart *part);
+void           e_mail_part_set_part_list       (EMailPart *part,
+                                                struct _EMailPartList *part_list);
 gboolean       e_mail_part_get_is_attachment   (EMailPart *part);
 void           e_mail_part_set_is_attachment   (EMailPart *part,
                                                 gboolean is_attachment);