com.mountainminds.eclemma.internal.ui.coverageview.CopyAction.java Source code

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Here is the source code for com.mountainminds.eclemma.internal.ui.coverageview.CopyAction.java

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/*******************************************************************************
 * Copyright (c) 2006, 2009 Mountainminds GmbH & Co. KG
 * This software is provided under the terms of the Eclipse Public License v1.0
 * See http://www.eclipse.org/legal/epl-v10.html.
 *
 * $Id: RemoveActiveSessionAction.java 96 2006-09-18 16:50:45Z mho $
 ******************************************************************************/
package com.mountainminds.eclemma.internal.ui.coverageview;

import java.util.Iterator;

import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.SelectionProviderAction;

import com.mountainminds.eclemma.internal.ui.UIMessages;

/**
 * This action copies a textual representation of the current selection to the
 * clipboard.
 * 
 * @author Marc R. Hoffmann
 * @version $Revision: 96 $
 */
class CopyAction extends SelectionProviderAction {

    private final Display display;

    private final ViewSettings settings;

    private final ITableLabelProvider labelprovider;

    private final ISelectionProvider selectionSource;

    public CopyAction(Display display, ViewSettings settings, ITableLabelProvider labelprovider,
            ISelectionProvider selectionSource) {
        super(selectionSource, UIMessages.CopyAction_label);
        this.display = display;
        this.settings = settings;
        this.labelprovider = labelprovider;
        this.selectionSource = selectionSource;
        ISharedImages sharedImages = PlatformUI.getWorkbench().getSharedImages();
        setImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_COPY));
        setDisabledImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_COPY_DISABLED));
        setActionDefinitionId("org.eclipse.ui.edit.copy"); //$NON-NLS-1$
    }

    public void selectionChanged(IStructuredSelection selection) {
        setEnabled(!selection.isEmpty());
    }

    public void run() {
        final StringBuffer sb = new StringBuffer();

        // Header
        final String[] headers = settings.getCounterMode().getColumnHeaders();
        sb.append(headers[CoverageView.COLUMN_ELEMENT]).append(SWT.TAB);
        sb.append(headers[CoverageView.COLUMN_RATIO]).append(SWT.TAB);
        sb.append(headers[CoverageView.COLUMN_COVERED]).append(SWT.TAB);
        sb.append(headers[CoverageView.COLUMN_MISSED]).append(SWT.TAB);
        sb.append(headers[CoverageView.COLUMN_TOTAL]).append(Text.DELIMITER);

        // Rows:
        final Iterator i = ((IStructuredSelection) selectionSource.getSelection()).iterator();
        while (i.hasNext()) {
            final Object element = i.next();
            appendColumn(sb, element, CoverageView.COLUMN_ELEMENT).append(SWT.TAB);
            appendColumn(sb, element, CoverageView.COLUMN_RATIO).append(SWT.TAB);
            appendColumn(sb, element, CoverageView.COLUMN_COVERED).append(SWT.TAB);
            appendColumn(sb, element, CoverageView.COLUMN_MISSED).append(SWT.TAB);
            appendColumn(sb, element, CoverageView.COLUMN_TOTAL).append(Text.DELIMITER);
        }

        copy(sb.toString());
    }

    private final StringBuffer appendColumn(StringBuffer sb, Object element, int column) {
        sb.append(labelprovider.getColumnText(element, column));
        return sb;
    }

    private void copy(String text) {
        final Clipboard cb = new Clipboard(display);
        final TextTransfer transfer = TextTransfer.getInstance();
        cb.setContents(new Object[] { text }, new Transfer[] { transfer });
        cb.dispose();
    }

}