| package org.eclipse.ui.internal.dialogs; |
| |
| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved. |
| */ |
| import org.eclipse.ui.internal.dialogs.*; |
| import org.eclipse.ui.internal.registry.NewWizardsRegistryReader; |
| import java.text.Collator; |
| import org.eclipse.jface.viewers.*; |
| |
| /** |
| * A Viewer element sorter that sorts Elements by their name attribute. |
| * Note that capitalization differences are not considered by this |
| * sorter, so a < B < c. |
| * |
| * NOTE one exception to the above: an element with the system's reserved |
| * name for base Wizards will always be sorted such that it will |
| * ultimately be placed at the beginning of the sorted result. |
| */ |
| class NewWizardCollectionSorter extends ViewerSorter { |
| public final static NewWizardCollectionSorter INSTANCE = new NewWizardCollectionSorter(); |
| private Collator collator = Collator.getInstance(); |
| /** |
| * Creates an instance of <code>NewWizardCollectionSorter</code>. Since this |
| * is a stateless sorter, it is only accessible as a singleton; the private |
| * visibility of this constructor ensures this. |
| */ |
| private NewWizardCollectionSorter() { |
| super(); |
| } |
| /** |
| * The 'compare' method of the sort operation. |
| * |
| * @return the value <code>0</code> if the argument o1 is equal to o2; |
| * a value less than <code>0</code> if o1 is less than o2; |
| * and a value greater than <code>0</code> if o1 is greater than o2. |
| */ |
| public int compare(Viewer viewer,Object o1,Object o2) { |
| String name1 = ((WizardCollectionElement)o1).getLabel(o1); |
| String name2 = ((WizardCollectionElement)o2).getLabel(o2); |
| if (name1.equals(name2)) |
| return 0; |
| |
| // Be sure that the examples category is at the end of the wizard categories |
| if (name2.equalsIgnoreCase(NewWizardsRegistryReader.EXAMPLES_WIZARD_CATEGORY)) |
| return -1; |
| |
| if (name1.equalsIgnoreCase(NewWizardsRegistryReader.EXAMPLES_WIZARD_CATEGORY)) |
| return 1; |
| |
| // note that this must be checked for name2 before name1 because if they're |
| // BOTH equal to BASE_CATEGORY then we want to answer false by convention |
| if (name2.equalsIgnoreCase(NewWizardsRegistryReader.BASE_CATEGORY)) |
| return 1; |
| |
| if (name1.equalsIgnoreCase(NewWizardsRegistryReader.BASE_CATEGORY)) |
| return -1; |
| |
| return collator.compare(name1, name2); |
| } |
| /** |
| * Return true if this sorter is affected by a property |
| * change of propertyName on the specified element. |
| */ |
| public boolean isSorterProperty(Object object, String propertyId) { |
| return propertyId.equals(IBasicPropertyConstants.P_TEXT); |
| } |
| } |