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## com.sas.servlet.util
Class JavaScriptIncludeHandler

    com.sas.servlet.util.JavaScriptIncludeHandler

    public class JavaScriptIncludeHandler

JavaScriptIncludeHandler handles writing JavaScript include statements and preventing multiple includes of the same file on a page.

The path to the JavaScript files may be set at a request/page scope with static method `JavaScriptIncludeHandler.setPath`. This value will override the value set by `ComponentPropertyManager.setJavaScriptLocation(String)` which may also may be used to set this path.

The map of tbean keys to filenames may be set on a local level as well with the static method `JavaScriptIncludeHandler.addLocalMapping`.

The list of tbeans which have already been included is maintained as an attribute in the `request` object, as are the path and the local mappings.

A JSP writer could set the JavaScript path and add a mapping with the following code:

     JavaScriptIncludeHandler.setPath( "myjspath/", request );
     JavaScriptIncludeHandler.addLocalMapping(
         TreeView.class, "local_TreeView.js", request );

See Also:
  `ComponentPropertyManager.setJavaScriptLocation(String)`

Field Summary
`static java.lang.String` | `DOJO_JS`
`static java.lang.String` | `SAS_COMMON_JS`
`static java.lang.String` | `SAS_FASTCLICKPROTECTION_CUSTOMFUNCTIONS_JS`
`static java.lang.String` | `SAS_FASTCLICKPROTECTION_JS`
`static java.lang.String` | `SAS_MODALSELECTOR_JS`
`static java.lang.String` | `SAS_RESIZING_JS`
`static java.lang.String` | `SAS_TRANSFORMATIONBEAN_JS`

Constructor Summary
`JavaScriptIncludeHandler(java.io.Writer out, javax.servlet.http.HttpServletRequest request)` Constructor for JavaScriptIncludeHandler.

Method Summary
`static void` | `addLocalMapping(java.lang.Object key, java.lang.String filename, javax.servlet.http.HttpServletRequest request)` Add to the local mapping of tbean names to filenames and dependencies.
`static void` | `addLocalMapping(java.lang.Object key, java.lang.String filename, java.lang.Object[] dependencies, javax.servlet.http.HttpServletRequest request)` Add to the local mapping of tbean names to filenames.
`static java.lang.Object[]` | `getDependencies(java.lang.Object key)` Get the dependencies associated with a tbean key.
`static java.lang.String` | `getEndScript(java.lang.String noScript)`
`static java.lang.String` | `getFilename(java.lang.Object key)` Get the filename associated with a tbean key.
`static boolean` | `getIncluded(java.lang.Object tbean, javax.servlet.http.HttpServletRequest request)` Indicate if the JavaScriptIncludeHandler has already included a tbean on a request/page.
`static java.lang.Object[]` | `getLocalDependencies(java.lang.Object key, javax.servlet.http.HttpServletRequest request)` Get the dependencies associated with a tbean key in the local mapping, which is only valid for the provided request.
`static java.lang.String` | `getLocalFilename(java.lang.Object key, javax.servlet.http.HttpServletRequest request)` Get the filename associated with a tbean key in the local mapping, which is only valid for the provided request.
`static java.lang.String` | `getPath(javax.servlet.http.HttpServletRequest request)` Get the path to the location of the JavaScript files.
`static java.lang.String` | `getStartScript()`
`static void` | `setEnabled(boolean enable, javax.servlet.http.HttpServletRequest request)` Enable or disable the writing of include statements on a request/page.
`static void` | `setIncluded(java.lang.Object tbean, boolean included, javax.servlet.http.HttpServletRequest request)` Tell the JavaScriptIncludeHandler if a tbean has already been included on a request/page.
`static void` | `setPath(java.lang.String path, javax.servlet.http.HttpServletRequest request)` Set the path to the location of the JavaScript files.
`void` | `writeIncludes(java.lang.Object tbean)` Write the JavaScript include statement if it hasn't already been included.
`static void` | `writeIncludes(java.io.Writer out, java.lang.Object tbean, javax.servlet.http.HttpServletRequest request)` Write the JavaScript include statement if it hasn't already been included.
`static void` | `writeIncludeStatement(java.io.Writer out, java.lang.String filename, java.lang.String path)`

Field Detail

### DOJO_JS

    public static final java.lang.String DOJO_JS

See Also:
  Constant Field Values

### SAS_COMMON_JS

    public static final java.lang.String SAS_COMMON_JS

See Also:
  Constant Field Values

### SAS_MODALSELECTOR_JS

    public static final java.lang.String SAS_MODALSELECTOR_JS

See Also:
  Constant Field Values

### SAS_RESIZING_JS

    public static final java.lang.String SAS_RESIZING_JS

See Also:
  Constant Field Values

### SAS_TRANSFORMATIONBEAN_JS

    public static final java.lang.String SAS_TRANSFORMATIONBEAN_JS

See Also:
  Constant Field Values

### SAS_FASTCLICKPROTECTION_JS

    public static final java.lang.String SAS_FASTCLICKPROTECTION_JS

See Also:
  Constant Field Values

### SAS_FASTCLICKPROTECTION_CUSTOMFUNCTIONS_JS

    public static final java.lang.String SAS_FASTCLICKPROTECTION_CUSTOMFUNCTIONS_JS

See Also:
  Constant Field Values

Constructor Detail

### JavaScriptIncludeHandler

    public JavaScriptIncludeHandler(java.io.Writer out,
                                    javax.servlet.http.HttpServletRequest request)

  Constructor for JavaScriptIncludeHandler.

Method Detail

### writeIncludes

    public void writeIncludes(java.lang.Object tbean)
                       throws java.io.IOException

  Write the JavaScript include statement if it hasn't already been included.

  Throws:
    `java.io.IOException`

### writeIncludeStatement

    public static void writeIncludeStatement(java.io.Writer out,
                                             java.lang.String filename,
                                             java.lang.String path)
                                      throws java.io.IOException

  Throws:
    `java.io.IOException`

### getStartScript

    public static java.lang.String getStartScript()

### getEndScript

    public static java.lang.String getEndScript(java.lang.String noScript)

### writeIncludes

    public static void writeIncludes(java.io.Writer out,
                                     java.lang.Object tbean,
                                     javax.servlet.http.HttpServletRequest request)
                              throws java.io.IOException

  Write the JavaScript include statement if it hasn't already been included.

  Throws:
    `java.io.IOException`

### getFilename

    public static java.lang.String getFilename(java.lang.Object key)

  Get the filename associated with a tbean key.

### getDependencies

    public static java.lang.Object[] getDependencies(java.lang.Object key)

  Get the dependencies associated with a tbean key.

  Returns:
    An array of keys of tbeans/files which the tbean dependends on. These dependencies are included before the current tbean's include.

### addLocalMapping

    public static void addLocalMapping(java.lang.Object key,
                                       java.lang.String filename,
                                       java.lang.Object[] dependencies,
                                       javax.servlet.http.HttpServletRequest request)

  Add to the local mapping of tbean names to filenames. This mapping overrides the static map for any key, and the path is part of the filename if using a local mapping so the path set with `setPath` will not be used.

### addLocalMapping

    public static void addLocalMapping(java.lang.Object key,
                                       java.lang.String filename,
                                       javax.servlet.http.HttpServletRequest request)

  Add to the local mapping of tbean names to filenames and dependencies. This mapping overrides the static map for any key, and the path is part of the filename if using a local mapping so the path set with `setPath` will not be used.

### getLocalFilename

    public static java.lang.String getLocalFilename(java.lang.Object key,
                                                    javax.servlet.http.HttpServletRequest request)

  Get the filename associated with a tbean key in the local mapping, which is only valid for the provided request.

### getLocalDependencies

    public static java.lang.Object[] getLocalDependencies(java.lang.Object key,
                                                          javax.servlet.http.HttpServletRequest request)

  Get the dependencies associated with a tbean key in the local mapping, which is only valid for the provided request.

  Returns:
    An array of keys of tbeans/files which the tbean dependends on. These dependencies are included before the current tbean's include.

### setPath

    public static void setPath(java.lang.String path,
                               javax.servlet.http.HttpServletRequest request)

  Set the path to the location of the JavaScript files. The path should end in a "/" if it is a directory.

### getPath

    public static java.lang.String getPath(javax.servlet.http.HttpServletRequest request)

  Get the path to the location of the JavaScript files.

### setEnabled

    public static void setEnabled(boolean enable,
                                  javax.servlet.http.HttpServletRequest request)

  Enable or disable the writing of include statements on a request/page.

### setIncluded

    public static void setIncluded(java.lang.Object tbean,
                                   boolean included,
                                   javax.servlet.http.HttpServletRequest request)

  Tell the JavaScriptIncludeHandler if a tbean has already been included on a request/page.

### getIncluded

    public static boolean getIncluded(java.lang.Object tbean,
                                      javax.servlet.http.HttpServletRequest request)

  Indicate if the JavaScriptIncludeHandler has already included a tbean on a request/page.

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