Imported Upstream version 3.6.0upstream/3.6.0

1 files changed, 19 insertions, 4 deletions

diff --git a/src/book.vala b/src/book.vala
index 15e79c6..6740fcb 100644
--- a/src/book.vala
+++ b/src/book.vala
@@ -14,7 +14,7 @@ public class Book
     private List<Page> pages;
 
     private bool needs_saving;
-    
+
     public signal void page_added (Page page);
     public signal void page_removed (Page page);
     public signal void reordered ();
@@ -24,10 +24,25 @@ public class Book
 
     public Book ()
     {
+        pages = new List<Page> ();
+    }
+
+    ~Book ()
+    {
+        foreach (var page in pages)
+        {
+            page.pixels_changed.disconnect (page_changed_cb);
+            page.crop_changed.disconnect (page_changed_cb);
+        }
     }
 
     public void clear ()
     {
+        foreach (var page in pages)
+        {
+            page.pixels_changed.disconnect (page_changed_cb);
+            page.crop_changed.disconnect (page_changed_cb);
+        }
         pages = null;
         cleared ();
     }
@@ -94,7 +109,7 @@ public class Book
         string prefix = uri, suffix = "";
         var extension_index = basename.last_index_of_char ('.');
         if (extension_index >= 0)
-        {          
+        {
             suffix = basename.slice (extension_index, basename.length);
             prefix = uri.slice (0, uri.length - suffix.length);
         }
@@ -460,7 +475,7 @@ public class Book
             writer.write_string ("\n");
             writer.write_string ("endstream\n");
             writer.write_string ("endobj\n");
-            
+
             saving (i);
         }
 
@@ -585,5 +600,5 @@ public class PsWriter
         }
 
         return Cairo.Status.SUCCESS;
-    }   
+    }
 }