com.minres.scviewer.e4.application.handlers.AddWaveformHandler.java Source code

Introduction

Here is the source code for com.minres.scviewer.e4.application.handlers.AddWaveformHandler.java

Source

/*******************************************************************************
 * Copyright (c) 2015 MINRES Technologies GmbH 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:
 *     MINRES Technologies GmbH - initial API and implementation
 *******************************************************************************/

package com.minres.scviewer.e4.application.handlers;

import java.util.List;

import javax.inject.Inject;
import javax.inject.Named;

import org.eclipse.e4.core.di.annotations.CanExecute;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.e4.ui.workbench.modeling.EPartService;
import org.eclipse.jface.viewers.IStructuredSelection;

import com.minres.scviewer.database.IWaveform;
import com.minres.scviewer.e4.application.parts.DesignBrowser;

public class AddWaveformHandler {

    public final static String PARAM_WHERE_ID = "com.minres.scviewer.e4.application.command.addwaveform.where";
    public final static String PARAM_ALL_ID = "com.minres.scviewer.e4.application.command.addwaveform.all";

    @Inject
    @Optional
    DesignBrowser designBrowser;

    @CanExecute
    public boolean canExecute(@Named(PARAM_WHERE_ID) String where, @Named(PARAM_ALL_ID) String all,
            EPartService partService,
            @Named(IServiceConstants.ACTIVE_SELECTION) @Optional IStructuredSelection selection) {
        if (designBrowser == null)
            designBrowser = getListPart(partService);
        if (designBrowser == null || designBrowser.getActiveWaveformViewerPart() == null)
            return false;
        Boolean before = "before".equalsIgnoreCase(where);
        if ("true".equalsIgnoreCase(all))
            return designBrowser.getFilteredChildren().length > 0 && (!before
                    || ((IStructuredSelection) designBrowser.getActiveWaveformViewerPart().getSelection())
                            .size() > 0);
        else
            return selection.size() > 0 && (!before
                    || ((IStructuredSelection) designBrowser.getActiveWaveformViewerPart().getSelection())
                            .size() > 0);
    }

    @Execute
    public void execute(@Named(PARAM_WHERE_ID) String where, @Named(PARAM_ALL_ID) String all,
            EPartService partService,
            @Named(IServiceConstants.ACTIVE_SELECTION) @Optional IStructuredSelection selection) {
        if (designBrowser == null)
            designBrowser = getListPart(partService);
        if (designBrowser != null && selection.size() > 0) {
            List<?> sel = selection.toList();
            designBrowser.getActiveWaveformViewerPart().addStreamsToList(sel.toArray(new IWaveform<?>[] {}),
                    "before".equalsIgnoreCase(where));
        }
    }

    protected DesignBrowser getListPart(EPartService partService) {
        MPart part = partService.getActivePart();
        if (part.getObject() instanceof DesignBrowser)
            return (DesignBrowser) part.getObject();
        else
            return null;
    }
}