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package eu.etaxonomy.taxeditor.molecular.handler;
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import java.util.Map;
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import info.bioinfweb.libralign.alignmentarea.AlignmentArea;
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import info.bioinfweb.libralign.alignmentarea.selection.SelectionModel;
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import info.bioinfweb.libralign.model.AlignmentModelUtils;
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import org.eclipse.core.commands.ExecutionEvent;
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import org.eclipse.swt.dnd.TextTransfer;
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import org.eclipse.swt.dnd.Transfer;
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import org.eclipse.ui.commands.IElementUpdater;
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import org.eclipse.ui.menus.UIElement;
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import eu.etaxonomy.taxeditor.molecular.editor.AlignmentEditor;
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/**
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* Handler that copies the currently selected nucleotides from an alignment editor to the clipboard.
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* <p>
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* The copied contents either come from the single reads or the consensus sequence alignment area,
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* depending on which component currently has the focus. If none of these components has the focus,
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* nothing will be copied, even if nucleotides are currently selected.
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* <p>
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* If the selection contains parts of multiple sequence, these are separated by the line separator
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* of the current operating system.
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*
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* @author Ben Stöver
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* @date 25.08.2015
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*/
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public class AlignmentEditorCopyHandler extends AbstractFocusedAlignmentAreaHandler implements IElementUpdater {
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@Override
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@SuppressWarnings("unchecked")
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protected void doExecute2(ExecutionEvent event, AlignmentEditor editor, AlignmentArea focusedArea) {
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SelectionModel selection = focusedArea.getSelection();
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if (!selection.isEmpty()) {
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editor.CLIPBOARD.setContents(new Object[]{AlignmentModelUtils.selectionAsString(focusedArea, false)},
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new Transfer[]{TextTransfer.getInstance()});
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}
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}
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@Override
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public boolean isEnabled() {
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AlignmentEditor editor = getActiveAlignmentEditor();
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if (editor != null) {
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AlignmentArea focusedArea = editor.getFocusedArea();
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if (focusedArea != null) {
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return !focusedArea.getSelection().isEmpty();
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}
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}
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return false;
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}
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@Override
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public void updateElement(UIElement element, @SuppressWarnings("rawtypes") Map parameters) {
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setBaseEnabled(isEnabled());
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}
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}
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