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package eu.etaxonomy.taxeditor.editor.view.uses.handler;
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import java.util.ArrayList;
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import java.util.List;
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import org.eclipse.core.commands.AbstractHandler;
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import org.eclipse.core.commands.ExecutionEvent;
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import org.eclipse.core.commands.ExecutionException;
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import org.eclipse.core.commands.common.NotDefinedException;
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import org.eclipse.core.commands.operations.IUndoContext;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.jface.viewers.TreePath;
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import org.eclipse.jface.viewers.TreeSelection;
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import org.eclipse.ui.IWorkbenchPart;
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import org.eclipse.ui.handlers.HandlerUtil;
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import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
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import eu.etaxonomy.cdm.model.description.TaxonDescription;
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import eu.etaxonomy.cdm.model.media.Media;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteDescriptionElementOperation;
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import eu.etaxonomy.taxeditor.editor.view.media.operation.DeleteMediaOperation;
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import eu.etaxonomy.taxeditor.editor.view.uses.operation.DeleteTaxonUseOperation;
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import eu.etaxonomy.taxeditor.editor.view.uses.operation.DeleteUseRecordOperation;
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import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
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import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
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import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
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public class DeleteUseHandler extends AbstractHandler {
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/*
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* (non-Javadoc)
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*
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* @see
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* org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
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* ExecutionEvent)
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*/
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/** {@inheritDoc} */
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public Object execute(ExecutionEvent event) throws ExecutionException {
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IStructuredSelection selection = (IStructuredSelection) HandlerUtil
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.getActiveSite(event).getSelectionProvider().getSelection();
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IWorkbenchPart part = HandlerUtil.getActivePart(event);
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IPostOperationEnabled postOperationEnabled = (part instanceof IPostOperationEnabled) ? (IPostOperationEnabled) part
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: null;
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try {
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String label = event.getCommand().getName();
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IUndoContext undoContext = EditorUtil.getUndoContext();
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List<AbstractPostOperation> operations = new ArrayList<AbstractPostOperation>();
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for (Object object : selection.toArray()) {
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AbstractPostOperation operation = null;
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// TaxonDescription
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if (object instanceof TaxonDescription) {
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operations.add(new DeleteTaxonUseOperation(label,
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undoContext, (TaxonDescription) object,
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postOperationEnabled));
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}
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// DescriptionElementBase
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else if (object instanceof DescriptionElementBase) {
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operations.add(new DeleteUseRecordOperation(label,
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undoContext, (DescriptionElementBase) object,
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postOperationEnabled));
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} else if (object instanceof FeatureNodeContainer) {
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List<DescriptionElementBase> descriptions = ((FeatureNodeContainer) object)
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.getDescriptionElementsForEntireBranch();
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for (DescriptionElementBase description : descriptions) {
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operations.add(new DeleteUseRecordOperation(
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label, undoContext, description,
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postOperationEnabled));
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}
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}
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// Media
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else if (object instanceof Media) {
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TreeSelection treeSelection = (TreeSelection) selection;
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TreePath[] path = treeSelection.getPathsFor(object);
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TaxonDescription imageGallery = (TaxonDescription) path[0]
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.getFirstSegment();
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operations
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.add(new DeleteMediaOperation(label, undoContext,
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imageGallery, (Media) object,
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postOperationEnabled));
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} else {
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EditorUtil.error(getClass(),
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"Selection is not valid for this delete handler",
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null);
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}
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}
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// execute all cumulated operations
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for (AbstractPostOperation operation : operations) {
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EditorUtil.executeOperation(operation);
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}
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} catch (NotDefinedException e) {
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EditorUtil.warn(getClass(), "Command name not set.");
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}
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return null;
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}
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}
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