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import java.util.Collection; |
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/** Delete behaviour customizer */ |
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private static DeleteHandler deleteHandler = null; |
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/** |
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* Gets a delete handler. |
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*/ |
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private static DeleteHandler getDeleteHandler() { |
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if (deleteHandler == null) { |
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org.openide.util.Lookup.Template template = new org.openide.util.Lookup.Template(DeleteHandler.class); |
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Collection deletes = org.openide.util.Lookup.getDefault().lookup(template).allInstances(); |
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if (deletes.size() == 1) { |
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deleteHandler = (DeleteHandler)deletes.iterator().next(); |
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} else { |
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deleteHandler = new StandardDelete(); |
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} |
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} |
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return deleteHandler; |
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} |
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/** Class which performs delete action */ |
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// Basic delete handler that provides a confirmation dialog and that |
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private class DeleteActionPerformer extends AbstractAction implements ActionPerformer { |
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// uses Node.destroy() to perform deletes. |
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-- |
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private static class StandardDelete implements DeleteHandler { |
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DeleteActionPerformer() {} |
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public boolean confirmDelete(Node[] sel) { |
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public boolean isEnabled() { |
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updateActionsState(); |
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return super.isEnabled(); |
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} |
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/** Perform delete action. */ |
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public void performAction(org.openide.util.actions.SystemAction action) { |
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final Node[] sel = manager.getSelectedNodes (); |
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if ((sel == null) || (sel.length == 0)) |
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return; |
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// perform action if confirmed |
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if (!confirmDelete || doConfirm(sel)) { |
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// clear selected nodes |
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try { |
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if (manager != null) { |
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manager.setSelectedNodes(new Node[] {}); |
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} |
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} catch (java.beans.PropertyVetoException e) { |
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// never thrown, setting empty selected nodes cannot be vetoed |
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} |
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doDestroy(sel); |
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if (attachPerformers) { |
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delete.setActionPerformer (null); // fixes bug #673 |
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} else { |
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setEnabled (false); |
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} |
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} |
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} |
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private boolean doConfirm(Node[] sel) { |
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-- |
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Line 655
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Line 668
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private void doDestroy(final Node[] sel) { |
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public void performDelete(final Node[] sel) { |
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-- |
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Line 688
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} |
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/** Class which performs delete action */ |
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private class DeleteActionPerformer extends AbstractAction implements ActionPerformer { |
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DeleteActionPerformer() {} |
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public boolean isEnabled() { |
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updateActionsState(); |
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return super.isEnabled(); |
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} |
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/** Perform delete action. */ |
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public void performAction(org.openide.util.actions.SystemAction action) { |
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final Node[] sel = manager.getSelectedNodes (); |
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if ((sel == null) || (sel.length == 0)) |
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return; |
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// perform action if confirmed |
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if (!confirmDelete || doConfirm(sel)) { |
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// clear selected nodes |
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try { |
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if (manager != null) { |
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manager.setSelectedNodes(new Node[] {}); |
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} |
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} catch (java.beans.PropertyVetoException e) { |
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// never thrown, setting empty selected nodes cannot be vetoed |
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} |
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doDestroy(sel); |
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if (attachPerformers) { |
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delete.setActionPerformer (null); // fixes bug #673 |
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} else { |
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setEnabled (false); |
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} |
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} |
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} |
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private boolean doConfirm(Node[] sel) { |
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return getDeleteHandler().confirmDelete(sel); |
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} |
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private void doDestroy(final Node[] sel) { |
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getDeleteHandler().performDelete(sel); |
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} |
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