Support removing properties from the properties dialog.

You can definitely blow your leg off with this one, clever ontology awareness
(e.g. required properties) would be good...


git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@5138 a436a847-0d15-0410-975c-d299462d15a1

2 files changed, 11 insertions, 0 deletions

diff --git a/ingen/Resource.hpp b/ingen/Resource.hpp
index 756419d8..3d6d6cd2 100644
--- a/ingen/Resource.hpp
+++ b/ingen/Resource.hpp
@@ -152,6 +152,15 @@ public:
 	 */
 	virtual void on_property(const Raul::URI& uri, const Atom& value) {}
 
+	/** Hook called whenever a property value is removed.
+	 *
+	 * If all values of a given key are removed, then value will be the wildcard.
+	 *
+	 * This can be used by derived classes to implement special behaviour for
+	 * particular properties (e.g. ingen:value for ports).
+	 */
+	virtual void on_property_removed(const Raul::URI& uri, const Atom& value) {}
+
 	/** Get the ingen type from a set of Properties.
 	 *
 	 * If some coherent ingen type is found, true is returned and the appropriate
diff --git a/ingen/client/ObjectModel.hpp b/ingen/client/ObjectModel.hpp
index 66c3db7c..6c582812 100644
--- a/ingen/client/ObjectModel.hpp
+++ b/ingen/client/ObjectModel.hpp
@@ -62,6 +62,7 @@ public:
 	const Atom& get_property(const Raul::URI& key) const;
 
 	void on_property(const Raul::URI& uri, const Atom& value);
+	void on_property_removed(const Raul::URI& uri, const Atom& value);
 
 	const Raul::Path&   path()       const { return _path; }
 	const Raul::Symbol& symbol()     const { return _symbol; }
@@ -74,6 +75,7 @@ public:
 	INGEN_SIGNAL(new_child, void, SPtr<ObjectModel>);
 	INGEN_SIGNAL(removed_child, void, SPtr<ObjectModel>);
 	INGEN_SIGNAL(property, void, const Raul::URI&, const Atom&);
+	INGEN_SIGNAL(property_removed, void, const Raul::URI&, const Atom&);
 	INGEN_SIGNAL(destroyed, void);
 	INGEN_SIGNAL(moved, void);