Example usage for com.vaadin.ui Embedded getMimeType

Introduction

In this page you can find the example usage for com.vaadin.ui Embedded getMimeType.

Prototype

public String getMimeType() 

Source Link

Document

Gets the MIME-Type of the object.

Usage

From source file:edu.kit.dama.ui.commons.util.UIUtils7.java

License:Apache License

public static void openResourceSubWindow(File sourceFile) {
    boolean fileAccessible = sourceFile != null && sourceFile.exists() && sourceFile.canRead();

    // Set subwindow for displaying file resource
    final Window window = new Window(fileAccessible ? sourceFile.getName() : "Information");
    window.center();//w w w .  ja  v  a 2  s  .c o  m
    // Set window layout
    VerticalLayout windowLayout = new VerticalLayout();
    windowLayout.setSizeFull();

    if (fileAccessible) {
        // Set resource that has to be embedded
        final Embedded resource = new Embedded(null, new FileResource(sourceFile));
        if ("application/octet-stream".equals(resource.getMimeType())) {
            window.setWidth("570px");
            window.setHeight("150px");
            windowLayout.setMargin(true);

            Label attentionNote = new Label(
                    "A file preview is not possible as the file type is not supported by your browser.");
            attentionNote.setContentMode(ContentMode.HTML);
            Link fileURL = new Link("Click here for downloading the file.", new FileResource(sourceFile));

            windowLayout.addComponent(attentionNote);
            windowLayout.addComponent(fileURL);
            windowLayout.setComponentAlignment(attentionNote, Alignment.MIDDLE_CENTER);
            windowLayout.setComponentAlignment(fileURL, Alignment.MIDDLE_CENTER);
        } else {
            window.setResizable(true);
            window.setWidth("800px");
            window.setHeight("500px");
            final Image image = new Image(null, new FileResource(sourceFile));
            image.setSizeFull();
            windowLayout.addComponent(image);
        }
    } else {
        //file is not accessible
        window.setWidth("570px");
        window.setHeight("150px");
        windowLayout.setMargin(true);
        Label attentionNote = new Label("Provided file cannot be accessed.");
        attentionNote.setContentMode(ContentMode.HTML);
        windowLayout.addComponent(attentionNote);
        windowLayout.setComponentAlignment(attentionNote, Alignment.MIDDLE_CENTER);
    }

    window.setContent(windowLayout);
    UI.getCurrent().addWindow(window);
}

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