eu.hohenegger.gitmine.ui.views.StatisticsView.java Source code

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Here is the source code for eu.hohenegger.gitmine.ui.views.StatisticsView.java

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/*******************************************************************************
 * Copyright (c) 2012 Max Hohenegger.
 * All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse
 * Public License v1.0 which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Max Hohenegger - initial implementation
 ******************************************************************************/
package eu.hohenegger.gitmine.ui.views;

import java.io.IOException;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.inject.Inject;

import org.eclipse.draw2d.LightweightSystem;
import org.eclipse.e4.core.contexts.ContextInjectionFactory;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.di.Focus;
import org.eclipse.e4.ui.di.UIEventTopic;
import org.eclipse.e4.ui.di.UISynchronize;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.part.IShowInTarget;
import org.eclipse.ui.part.ShowInContext;

import eu.hohenegger.gitmine.IMiningService;

public class StatisticsView implements IShowInTarget {
    public static final String VIEWCOM_STATISTICS_OPEN = "viewcommunication/asyncEvent/statistics/open";

    public static final String MPART_ID = "eu.hohenegger.gitmine.ui.statistics";

    @Inject
    private IEclipseContext iEclipseContext;

    private LightweightSystem lws;
    private Canvas canvas;
    private StatisticsGraph graph;
    private MPart part;
    private Composite child;
    private Composite parent;

    @Inject
    private Shell activeShell;

    @Inject
    private IMiningService miningservice;

    @PostConstruct
    public void createPartControl(Composite parent, MPart part) {
        this.parent = parent;
        this.part = part;

        reset();
    }

    private void reset() {
        if (child != null && !child.isDisposed()) {
            child.dispose();
        }
        child = new Composite(parent, SWT.NONE);
        child.setLayout(new FillLayout());

        canvas = new Canvas(child, SWT.NONE);

        lws = new LightweightSystem(canvas);

        graph = ContextInjectionFactory.make(StatisticsGraph.class, iEclipseContext);

        lws.setContents(graph);

        parent.layout(true);
    }

    @Inject
    @Optional
    private void openRepository(@UIEventTopic(VIEWCOM_STATISTICS_OPEN) Repository repository, UISynchronize sync) {

        try {
            part.setLabel(repository.getDirectory() + " - " + repository.getBranch());
            // If you want to update the UI, run it in the UI thread
            sync.syncExec(new Runnable() {
                @Override
                public void run() {
                    reset();
                }
            });

            graph.addCurve("Commits", miningservice.scanCommitsPerDay(repository), new RGB(0, 0, 255), "#", true);
        } catch (IOException e) {
            // TODO log
            MessageDialog.openError(activeShell, "Error", e.getLocalizedMessage());
        }
    }

    @Focus
    public void setFocus() {
        canvas.setFocus();
    }

    @PreDestroy
    public void dispose() {
        child.dispose();
        lws.getUpdateManager().dispose();
        lws.getRootFigure().erase();
    }

    @Override
    public boolean show(ShowInContext context) {
        // TODO Auto-generated method stub
        return true;
    }
}