Adding destroy signal do document to allow proper cleanup.

(bzr r13094)

3 files changed, 11 insertions, 0 deletions

diff --git a/src/document-private.h b/src/document-private.h
index 065101174..35f21910c 100644
--- a/src/document-private.h
+++ b/src/document-private.h
@@ -52,6 +52,7 @@ struct SPDocumentPrivate {
 	GHashTable *resources;
 	ResourcesChangedSignalMap resources_changed_signals;
 
+        sigc::signal<void> destroySignal;
 	SPDocument::ModifiedSignal modified_signal;
 	SPDocument::URISetSignal uri_set_signal;
 	SPDocument::ResizedSignal resized_signal;
diff --git a/src/document.cpp b/src/document.cpp
index 112503320..18e626b5b 100644
--- a/src/document.cpp
+++ b/src/document.cpp
@@ -141,6 +141,8 @@ SPDocument::SPDocument() :
 }
 
 SPDocument::~SPDocument() {
+    priv->destroySignal.emit();
+
     // kill/unhook this first
     if ( profileManager ) {
         delete profileManager;
@@ -230,6 +232,11 @@ SPDocument::~SPDocument() {
     //delete this->_whiteboard_session_manager;
 }
 
+sigc::connection SPDocument::connectDestroy(sigc::signal<void>::slot_type slot)
+{
+    return priv->destroySignal.connect(slot);
+}
+
 SPDefs *SPDocument::getDefs()
 {
     if (!root) {
diff --git a/src/document.h b/src/document.h
index e5567d3b6..ee903449d 100644
--- a/src/document.h
+++ b/src/document.h
@@ -85,6 +85,9 @@ public:
     SPDocument();
     virtual ~SPDocument();
 
+    sigc::connection connectDestroy(sigc::signal<void>::slot_type slot);
+
+
     unsigned int keepalive : 1;
     unsigned int virgin    : 1; ///< Has the document never been touched?
     unsigned int modified_since_save : 1;