[mylyn-dev] modifying attributes via TaskDataModelListener.attributeChan

[Larry Edelstein <ledelstein@xxxxxxxxxxxxxx>]

Can I modify an attribute during the execution of TaskDataModelListener.attributeChanged(), refresh the editor page via AbstractTaskEditorPage.refreshFormContent(), and expect to be in a consistent state?  I’m finding that upon refresh, the modifications I make in attributeChanged() are gone.

 

Here’s my task editor page’s init method:

 

     @Override

     public void init(IEditorSite site, IEditorInput input) {

           super.init(site, input);

           getModel().addModelListener(new ModelListener(this));

     }

 

In my model listener, I have this method, which updates the read-only state of an attribute depending on the value of another attribute:

 

                @Override

                public void attributeChanged(TaskDataModelEvent event) {

                                TaskAttribute changed = event.getTaskAttribute();

                                TaskData taskData = changed.getTaskData();

                                if (changed.getId().equals(ATTRIBUTE_TO_BE_WATCHED)) {

                                                TaskAttribute dependent = taskData.getRoot().getAttribute(DEPENDENT_ATTRIBUTE);

                                                if (changed.getValue().equals(INTERESTING_VALUE)) {

                                                                dependent.getMetaData().setReadOnly(true);

                                                } else {

                                                                dependent.getMetaData().setReadOnly(false);

                                                }

                                                editorPage.refreshFormContent();

                                }

                }

 

 

 

What I’m seeing is that after the refreshFormContent() call, the dependent attribute’s state is back to what it was before; the change doesn’t take effect.

 

Any ideas?

 

Larry Edelstein

Senior Member of Technical Staff

Salesforce.com

ledelstein@xxxxxxxxxxxxxx