de.walware.statet.rtm.base.ui.RtModelUIPlugin.java Source code

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Here is the source code for de.walware.statet.rtm.base.ui.RtModelUIPlugin.java

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/*=============================================================================#
 # Copyright (c) 2012-2014 Stephan Wahlbrink (WalWare.de) and others.
 # 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:
 #     Stephan Wahlbrink - initial API and implementation
 #=============================================================================*/

package de.walware.statet.rtm.base.ui;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.eclipse.ui.services.IDisposable;
import org.osgi.framework.BundleContext;

import de.walware.ecommons.ICommonStatusConstants;
import de.walware.ecommons.emf.ui.forms.EFColors;
import de.walware.ecommons.ui.util.ImageRegistryUtil;

public class RtModelUIPlugin extends AbstractUIPlugin {

    public static final String PLUGIN_ID = "de.walware.rtm.base.ui"; //$NON-NLS-1$

    public static final String R_GRAPHICS_PERSPECTIVE_ID = "de.walware.statet.rtm.base.perspectives.RGraphics"; //$NON-NLS-1$

    public static final String R_TASK_EDITOR_CONTEXT_ID = "de.walware.statet.rtm.contexts.RTaskEditor"; //$NON-NLS-1$

    public static final String RUN_R_TASK_COMMAND_ID = "de.walware.statet.rtm.commands.RunRTask"; //$NON-NLS-1$

    public static final String OBJ_UNKOWN_TYPE_IMAGE_ID = PLUGIN_ID + "/obj/rtype-unknown"; //$NON-NLS-1$

    public static final String OBJ_REXPR_TYPE_IMAGE_ID = PLUGIN_ID + "/obj/rtype-expr"; //$NON-NLS-1$
    public static final String OBJ_DATAFRAME_TYPE_IMAGE_ID = PLUGIN_ID + "/obj/rtype-dataframe"; //$NON-NLS-1$
    public static final String OBJ_COLUMN_TYPE_IMAGE_ID = PLUGIN_ID + "/obj/rtype-column"; //$NON-NLS-1$
    public static final String OBJ_COLOR_TYPE_IMAGE_ID = PLUGIN_ID + "/obj/rtype-color"; //$NON-NLS-1$
    public static final String OBJ_TEXT_TYPE_IMAGE_ID = PLUGIN_ID + "/obj/rtype-text"; //$NON-NLS-1$

    public static final boolean DEBUG = false;

    /** The shared instance */
    private static RtModelUIPlugin gPlugin;

    /**
     * Returns the shared plug-in instance
     *
     * @return the shared instance
     */
    public static RtModelUIPlugin getDefault() {
        return gPlugin;
    }

    private boolean fStarted;

    private final List<IDisposable> fDisposables = new ArrayList<IDisposable>();

    private EFColors fFormColors;

    public RtModelUIPlugin() {
    }

    @Override
    public void start(final BundleContext context) throws Exception {
        super.start(context);
        gPlugin = this;

        fStarted = true;
    }

    @Override
    public void stop(final BundleContext context) throws Exception {
        try {
            synchronized (this) {
                fStarted = false;
            }
            if (fFormColors != null) {
                fFormColors.dispose();
                fFormColors = null;
            }

            for (final IDisposable listener : fDisposables) {
                try {
                    listener.dispose();
                } catch (final Throwable e) {
                    getLog().log(new Status(IStatus.ERROR, PLUGIN_ID, ICommonStatusConstants.INTERNAL_ERROR,
                            "An error occured when disposing the plug-in.", e));
                }
            }
            fDisposables.clear();
        } finally {
            gPlugin = null;
            super.stop(context);
        }
    }

    public void addStoppingListener(final IDisposable listener) {
        if (listener == null) {
            throw new NullPointerException();
        }
        synchronized (this) {
            if (!fStarted) {
                throw new IllegalStateException("The plug-in is not started.");
            }
            fDisposables.add(listener);
        }
    }

    @Override
    protected void initializeImageRegistry(final ImageRegistry reg) {
        if (!fStarted) {
            throw new IllegalStateException("The plug-in is not started.");
        }
        final ImageRegistryUtil util = new ImageRegistryUtil(this);

        reg.put(OBJ_UNKOWN_TYPE_IMAGE_ID, ImageDescriptor.getMissingImageDescriptor());

        util.register(OBJ_REXPR_TYPE_IMAGE_ID, ImageRegistryUtil.T_OBJ, "rtyped-expr.png");
        util.register(OBJ_DATAFRAME_TYPE_IMAGE_ID, ImageRegistryUtil.T_OBJ, "rtyped-dataframe.png");
        util.register(OBJ_COLUMN_TYPE_IMAGE_ID, ImageRegistryUtil.T_OBJ, "rtyped-column.png");
        util.register(OBJ_COLOR_TYPE_IMAGE_ID, ImageRegistryUtil.T_OBJ, "rtyped-color.png");
        util.register(OBJ_TEXT_TYPE_IMAGE_ID, ImageRegistryUtil.T_OBJ, "rtyped-text.png");
    }

    public EFColors getFormColors(final Display display) {
        if (fFormColors == null) {
            if (!fStarted) {
                throw new IllegalStateException("The plug-in is not started.");
            }
            fFormColors = new EFColors(display);
            fFormColors.markShared();
        }
        return fFormColors;
    }

}