Bug 305200 [EditorMgmt] FileEditorMappingContentProvider could just be replaced by ArrayContentProvider
This class doesn't seem to be very useful.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardExportPage.java
selections.add(currentResource);
			}
        }
        if (selections.isEmpty()) {
			return; 
		}
        int selectedResourceCount = selections.size();
        if (selectedResourceCount == 1) {
            IResource resource = (IResource) selections.get(0);
            setResourceToDisplay(resource);
        } else {
            selectedResources = selections;
            exportAllTypesRadio.setSelection(true);
            exportSpecifiedTypesRadio.setSelection(false);
            resourceNameField.setText(CURRENT_SELECTION);
            exportCurrentSelection = true;
            displayResourcesSelectedCount(selectedResourceCount);
        }
    }
    /**
     * Updates the enablements of this page's controls. Subclasses may extend.
     */
    protected void updateWidgetEnablements() {
        if (exportCurrentSelection) {
			resourceDetailsButton.setEnabled(true);
		} else {
            IResource resource = getSourceResource();
            resourceDetailsButton.setEnabled(resource != null
                    && resource.isAccessible());
        }