[gnome-contacts] Add a multi-value back reference from Contact

[Alexander Larsson <alexl src gnome org>]

commit 152dcd845a4bea879d35dbb2ae662366237cd389
Author: Alexander Larsson <alexl redhat com>
Date:   Wed Aug 17 10:39:32 2011 +0200

    Add a multi-value back reference from Contact
    
    This is used to get the ContactData from the contact in the store,
    allowing us to use the same contact in multiple stores.

 src/contacts-contact.vala |   35 +++++++++++++++++++++++++++++++++++
 src/contacts-store.vala   |    7 +++----
 2 files changed, 38 insertions(+), 4 deletions(-)
---
diff --git a/src/contacts-contact.vala b/src/contacts-contact.vala
index f1bde99..ec0a1a7 100644
--- a/src/contacts-contact.vala
+++ b/src/contacts-contact.vala
@@ -106,6 +106,11 @@ public class Contacts.Contact : GLib.Object  {
   public PresenceType presence_type;
   public string presence_message;
   public bool is_phone;
+  struct ContactDataRef {
+    void *key;
+    void *data;
+  }
+  private ContactDataRef[] refs;
 
   static Gdk.Pixbuf fallback_avatar;
 
@@ -178,10 +183,40 @@ public class Contacts.Contact : GLib.Object  {
       SignalHandler.disconnect_by_func (tp.contact, (void *)persona_notify_cb, this);
   }
 
+  public void *lookup (void *key) {
+    foreach (var data_ref in refs) {
+      if (data_ref.key == key)
+	return data_ref.data;
+    }
+    return null;
+  }
+
+  public void set_lookup (void *key, void *data) {
+    int i = refs.length;
+    refs.resize(i+1);
+    refs[i].key = key;
+    refs[i].data = data;
+  }
+
+  public void remove_lookup (void *key) {
+    int i;
+
+    for (i = 0; i < refs.length; i++) {
+      if (refs[i].key == key) {
+	for (int j = i + 1; j < refs.length; j++) {
+	  refs[j-1] = refs[j];
+	}
+	refs.resize(refs.length-1);
+	return;
+      }
+    }
+  }
+
   public Contact (Store store, Individual i) {
     this.store = store;
     individual = i;
     individual.set_data ("contact", this);
+    this.refs = new ContactDataRef[0];
 
     foreach (var p in individual.personas)
       connect_persona (p);
diff --git a/src/contacts-store.vala b/src/contacts-store.vala
index ead5e55..e3e886e 100644
--- a/src/contacts-store.vala
+++ b/src/contacts-store.vala
@@ -221,7 +221,7 @@ public class Contacts.Store  {
   }
 
   private ContactData lookup_data (Contact c) {
-    return c.get_data ("contact-data");
+    return (ContactData *)c.lookup (this);
   }
 
   public bool lookup_iter (Contact c, out TreeIter iter) {
@@ -259,8 +259,7 @@ public class Contacts.Store  {
     data.contact = c;
     data.visible = false;
 
-    // TODO: Make this a separate hashtable to support multiple stores?
-    c.set_data ("contact-data", data);
+    c.set_lookup (this, data);
 
     contacts.add (data);
 
@@ -283,7 +282,7 @@ public class Contacts.Store  {
       contacts.set (i, contacts.get (contacts.size - 1));
     contacts.remove_at (contacts.size - 1);
 
-    c.set_data ("contact-data", null);
+    c.remove_lookup (this);
 
     removed (c);
   }