Replace "depends_on" in "Property" traits with "observe"

envisage/examples/demo/plugins/tasks/attractors/model/henon.py

@@ -34,7 +34,7 @@ class Henon(HasTraits):
     steps = Int(10000)
 
     # Iteration results.
-    points = Property(Array, depends_on="a, b, initial_point, steps")
+    points = Property(Array, observe="a, b, initial_point, steps")
 
     # Configuration view.
     view = View(
@@ -49,8 +49,8 @@ class Henon(HasTraits):
 
     name = Str("Henon Map")
     plot_type = Str("scatter")
-    x_data = Property(Array, depends_on="points")
-    y_data = Property(Array, depends_on="points")
+    x_data = Property(Array, observe="points")
+    y_data = Property(Array, observe="points")
     x_label = Str("x")
     y_label = Str("y")
 

envisage/examples/demo/plugins/tasks/attractors/model/i_model_3d.py

@@ -36,8 +36,8 @@ class IModel3dIPlottable2dMixin(HasTraits):
 
     name = DelegatesTo("adaptee")
 
-    x_data = Property(Array, depends_on="adaptee.points, x_label")
-    y_data = Property(Array, depends_on="adaptee.points, y_label")
+    x_data = Property(Array, observe="adaptee.points, x_label")
+    y_data = Property(Array, observe="adaptee.points, y_label")
 
     x_label = Trait("x", {"x": 0, "y": 1, "z": 2})
     y_label = Trait("y", {"x": 0, "y": 1, "z": 2})

envisage/examples/demo/plugins/tasks/attractors/model/lorenz.py

@@ -31,8 +31,7 @@ class Lorenz(HasTraits):
 
     name = Str("Lorenz Attractor")
     points = Property(
-        Array,
-        depends_on=["prandtl", "rayleigh", "beta", "initial_point", "times"],
+        Array, observe="prandtl, rayleigh, beta, initial_point, times"
     )
 
     #### 'Lorenz' interface ###################################################
@@ -47,7 +46,7 @@ class Lorenz(HasTraits):
     time_start = Float(0.0)
     time_stop = Float(100.0)
     time_step = Float(0.01)
-    times = Property(Array, depends_on="time_start, time_stop, time_step")
+    times = Property(Array, observe="time_start, time_stop, time_step")
 
     # Configuration view.
     view = View(

envisage/examples/demo/plugins/tasks/attractors/model/rossler.py

@@ -30,7 +30,7 @@ class Rossler(HasTraits):
     #### 'IModel3d' interface #################################################
 
     name = Str("Rossler Attractor")
-    points = Property(Array, depends_on=["a, b, c, initial_point, times"])
+    points = Property(Array, observe="a, b, c, initial_point, times")
 
     #### 'Rossler' interface ##################################################
 
@@ -44,7 +44,7 @@ class Rossler(HasTraits):
     time_start = Float(0.0)
     time_stop = Float(100.0)
     time_step = Float(0.01)
-    times = Property(Array, depends_on="time_start, time_stop, time_step")
+    times = Property(Array, observe="time_start, time_stop, time_step")
 
     # Configuration view.
     view = View(

envisage/examples/demo/plugins/tasks/attractors/model_help_pane.py

@@ -24,7 +24,7 @@ class ModelHelpPane(TraitsDockPane):
 
     model = Instance(HasTraits)
 
-    html = Property(Str, depends_on="model")
+    html = Property(Str, observe="model")
 
     view = View(
         Item(

envisage/examples/demo/plugins/tasks/attractors/plot_2d_pane.py

@@ -28,12 +28,12 @@ class Plot2dPane(TraitsTaskPane):
     active_model = Instance(IPlottable2d)
     models = List(IPlottable2d)
 
-    plot_type = Property(Str, depends_on="active_model.plot_type")
-    title = Property(Str, depends_on="active_model.name")
-    x_data = Property(depends_on="active_model.x_data")
-    y_data = Property(depends_on="active_model.y_data")
-    x_label = Property(Str, depends_on="active_model.x_label")
-    y_label = Property(Str, depends_on="active_model.y_label")
+    plot_type = Property(Str, observe="active_model.plot_type")
+    title = Property(Str, observe="active_model.name")
+    x_data = Property(observe="active_model.x_data")
+    y_data = Property(observe="active_model.y_data")
+    x_label = Property(Str, observe="active_model.x_label")
+    y_label = Property(Str, observe="active_model.y_label")
 
     view = View(
         HGroup(

envisage/plugins/python_shell/view/namespace_view.py

@@ -100,7 +100,7 @@ class NamespaceView(View):
 
     # The bindings in the namespace.  This is a list of HasTraits objects with
     # 'name', 'type' and 'module' string attributes.
-    bindings = Property(List, depends_on=["namespace"])
+    bindings = Property(List, observe="namespace")
 
     shell_view = Instance(PythonShellView)
 

envisage/ui/tasks/action/task_window_toggle_group.py

@@ -18,7 +18,7 @@ class TaskWindowToggleAction(Action):
 
     #### 'Action' interface ###################################################
 
-    name = Property(Str, depends_on="window.active_task.name")
+    name = Property(Str, observe="window.active_task.name")
     style = "toggle"
 
     #### 'TaskWindowToggleAction' interface ###################################

envisage/ui/tasks/task_window.py

@@ -23,7 +23,7 @@ class TaskWindow(PyfaceTaskWindow):
 
     #: The window's icon.  We override it so it can delegate to the application
     #: icon if the window's icon is not set.
-    icon = Property(Instance(ImageResource), depends_on="_icon")
+    icon = Property(Instance(ImageResource), observe="_icon")
 
     #### Protected interface ##################################################
 

examples/legacy/plugins/tasks/ipython_kernel/example_task.py

@@ -39,7 +39,7 @@ class ExampleTask(Task):
     name = "Multi-Tab Editor"
 
     active_editor = Property(
-        Instance(IEditor), depends_on="editor_area.active_editor"
+        Instance(IEditor), observe="editor_area.active_editor"
     )
 
     editor_area = Instance(IEditorAreaPane)

examples/legacy/plugins/tasks/ipython_kernel/python_editor.py

@@ -27,9 +27,9 @@ class PythonEditor(Editor):
 
     dirty = Bool(False)
 
-    name = Property(Str, depends_on="path")
+    name = Property(Str, observe="path")
 
-    tooltip = Property(Str, depends_on="path")
+    tooltip = Property(Str, observe="path")
 
     show_line_numbers = Bool(True)