CoverageAction.java

package org.erlide.cover.ui.actions;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.ui.statushandlers.StatusManager;
import org.erlide.cover.core.Logger;
import org.erlide.cover.ui.Activator;
import org.erlide.cover.ui.annotations.EditorTracker;
import org.erlide.cover.views.model.StatsTreeObject;

/**
 * Abstract class for the action of showing and hiding annotations
 *
 * @author Aleksandra Lipiec <aleksandra.lipiec@erlang-solutions.com>
 *
 */
public abstract class CoverageAction extends Action {

    protected EditorTracker marker;
    private final TreeViewer viewer;

    private final Logger log; // logger

    public CoverageAction(final TreeViewer viewer) {
        log = Activator.getDefault();
        this.viewer = viewer;
        marker = EditorTracker.getInstance();
    }

    @Override
    public void run() {

        log.info("show coverage!");

        final ISelection selection = viewer.getSelection();

        if (!(selection instanceof ITreeSelection)) {
            final IStatus executionStatus = new Status(IStatus.ERROR, Activator.PLUGIN_ID,
                    "Internall error occured: bad sellection type", null);
            StatusManager.getManager().handle(executionStatus, StatusManager.SHOW);
            return;
        }

        final ITreeSelection treeSelection = (ITreeSelection) selection;

        log.info(treeSelection.getFirstElement().getClass());

        perform((StatsTreeObject) treeSelection.getFirstElement());
    }

    protected abstract void perform(StatsTreeObject selection);

}