PreviewImageAction.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * 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:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.imageviewer;

import com.google.gwt.user.client.Window;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.google.inject.name.Named;
import static java.util.Collections.singletonList;
import org.eclipse.che.ide.CoreLocalizationConstant;
import org.eclipse.che.ide.api.action.AbstractPerspectiveAction;
import org.eclipse.che.ide.api.action.ActionEvent;
import org.eclipse.che.ide.api.app.AppContext;
import org.eclipse.che.ide.api.filetypes.FileType;
import org.eclipse.che.ide.api.machine.WsAgentURLModifier;
import org.eclipse.che.ide.api.resources.File;
import org.eclipse.che.ide.api.resources.Resource;
import static org.eclipse.che.ide.workspace.perspectives.project.ProjectPerspective.PROJECT_PERSPECTIVE_ID;

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

/**
 * Action for previewing images in dedicated window.
 *
 * @author Vitaliy Guliy
 */
@Singleton
public class PreviewImageAction extends AbstractPerspectiveAction {

    private final WsAgentURLModifier wsAgentURLModifier;
    private final AppContext         appContext;

    private final List<String> extensions = new ArrayList<>();

    @Inject
    public PreviewImageAction(WsAgentURLModifier wsAgentURLModifier,
                             AppContext appContext,
                              CoreLocalizationConstant constant,
                              @Named("PNGFileType") FileType pngFile,
                              @Named("BMPFileType") FileType bmpFile,
                              @Named("GIFFileType") FileType gifFile,
                              @Named("ICOFileType") FileType iconFile,
                              @Named("SVGFileType") FileType svgFile,
                              @Named("JPEFileType") FileType jpeFile,
                              @Named("JPEGFileType") FileType jpegFile,
                              @Named("JPGFileType") FileType jpgFile) {
        super(singletonList(PROJECT_PERSPECTIVE_ID),
                constant.actionPreviewImageTitle(),
                constant.actionPreviewImageDescription(),
                null,
                null);
        this.wsAgentURLModifier = wsAgentURLModifier;
        this.appContext = appContext;

        extensions.add(pngFile.getExtension());
        extensions.add(bmpFile.getExtension());
        extensions.add(gifFile.getExtension());
        extensions.add(iconFile.getExtension());
        extensions.add(svgFile.getExtension());
        extensions.add(jpeFile.getExtension());
        extensions.add(jpegFile.getExtension());
        extensions.add(jpgFile.getExtension());
    }

    @Override
    public void updateInPerspective(ActionEvent e) {
        final Resource[] resources = appContext.getResources();
        if (resources != null && resources.length == 1) {
            final Resource selectedResource = resources[0];
            if (Resource.FILE == selectedResource.getResourceType()) {
                final String fileExtension = ((File)selectedResource).getExtension();
                e.getPresentation().setEnabledAndVisible(extensions.contains(fileExtension));
                return;
            }
        }

        e.getPresentation().setEnabledAndVisible(false);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        final Resource selectedResource = appContext.getResource();
        if (Resource.FILE == selectedResource.getResourceType()) {
            final String contentUrl = ((File)selectedResource).getContentUrl();
            Window.open(wsAgentURLModifier.modify(contentUrl), "_blank", null);
        }
    }

}