Viewer (tds 5.1 API)

All Known Subinterfaces:

ViewerLinkProvider

All Known Implementing Classes:

Godiva3Viewer, JupyterNotebookViewerService.JupyterNotebookViewer
```
public interface Viewer
```
Interface for plugging in Viewers. Generally, these are implemented with jnlp files in /content/thredds/view/views/*.jnlp You can customize by adding parameters to the jnlp file, eg parm=subst&name=value. Then all instances of "{param}" will be replaced by subst, and all instances of "{name}" will be replaced by value, etc.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ViewerLinkProvider.ViewerLink`	`getViewerLink(thredds.client.catalog.Dataset ds, javax.servlet.http.HttpServletRequest req)`
`String`	`getViewerLinkHtml(thredds.client.catalog.Dataset ds, javax.servlet.http.HttpServletRequest req)`	Get an HTML fragment link to the viewer JNLP file, for this dataset.
`boolean`	`isViewable(thredds.client.catalog.Dataset ds)`	Is this dataset vieweable by me?

- Method Detail
  - isViewable
```
boolean isViewable(thredds.client.catalog.Dataset ds)
```
    Is this dataset vieweable by me?
    
    Parameters:
    
    ds - the dataset
    
    Returns:
    
    true if viewable
  - getViewerLinkHtml
```
String getViewerLinkHtml(thredds.client.catalog.Dataset ds,
                         javax.servlet.http.HttpServletRequest req)
```
    Get an HTML fragment link to the viewer JNLP file, for this dataset. Example: return "Integrated Data Viewer (IDV) (webstart)";
    
    Parameters:
    
    ds - the dataset to view
    
    req - the request
    
    Returns:
    
    HTML fragment string
  - getViewerLink
```
ViewerLinkProvider.ViewerLink getViewerLink(thredds.client.catalog.Dataset ds,
                                            javax.servlet.http.HttpServletRequest req)
```
    Parameters:
    
    ds - the dataset to view
    
    req - the request
    
    Returns:
    
    HTML fragment string