HelpSet
Keywords: javax.help.HelpSet class

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## javax.help
Class HelpSet

    java.lang.Object
      javax.help.HelpSet

All Implemented Interfaces:
  java.io.Serializable

public class HelpSet
extends java.lang.Object
implements java.io.Serializable

A HelpSet is a collection of help information consisting of a HelpSet file, table of contents (TOC), index, topic files, and Map file. The HelpSet file is the portal to the HelpSet.

See Also:
  Serialized Form

Nested Class Summary
`static class` | `HelpSet.DefaultHelpSetFactory` The default HelpSetFactory that processes HelpSets.
`static class` | `HelpSet.Presentation` HelpSet Presentation class.

Field Summary
`static java.lang.String` | `helpBrokerClass`
`static java.lang.String` | `helpBrokerLoader`
`static java.lang.Object` | `implRegistry` Information for implementation customization.
`static java.lang.Object` | `kitLoaderRegistry`
`static java.lang.Object` | `kitTypeRegistry` HelpSet context information.
`static java.lang.String` | `publicIDString` PublicID (known to this XML processor) to the DTD for version 1.0 of the HelpSet
`static java.lang.String` | `publicIDString_V2` PublicID (known to this XML processor) to the DTD for version 2.0 of the HelpSet

Constructor Summary
`HelpSet()` Creates an empty HelpSet.
`HelpSet(java.lang.ClassLoader loader)` Creates an empty HelpSet that one can parse into.
`HelpSet(java.lang.ClassLoader loader, java.net.URL helpset)` Creates a HelpSet.

Method Summary
`void` | `add(HelpSet hs)` Adds a HelpSet, HelpSetEvents are generated.
`void` | `addHelpSetListener(HelpSetListener l)` Adds a listener for the HelpSetEvent posted after the model has changed.
`boolean` | `contains(HelpSet hs)` Determines if a HelpSet is a sub-HelpSet of this object.
`HelpBroker` | `createHelpBroker()` Creates a presentation object for this HelpSet.
`HelpBroker` | `createHelpBroker(java.lang.String presentationName)` Creates a presentation object for this HelpSet.
`static java.net.URL` | `findHelpSet(java.lang.ClassLoader cl, java.lang.String name)` As above but default on locale to Locale.getDefault()
`static java.net.URL` | `findHelpSet(java.lang.ClassLoader cl, java.lang.String name, java.util.Locale locale)` Locates a HelpSet file and return its URL.
`static java.net.URL` | `findHelpSet(java.lang.ClassLoader cl, java.lang.String shortName, java.lang.String extension, java.util.Locale locale)` Locates a HelpSet file and return its URL.
`Map` | `getCombinedMap()` The map for this HelpSet.
`HelpSet.Presentation` | `getDefaultPresentation()`
`java.util.Enumeration` | `getHelpSets()` Enumerates all the HelpSets that have been added to this one.
`java.net.URL` | `getHelpSetURL()` The URL that is the base for this HelpSet.
`Map.ID` | `getHomeID()` Returns the ID to visit when the user makes a "go home" gesture.
`java.lang.Object` | `getKeyData(java.lang.Object context, java.lang.String key)` Gets some Data for a Key in a given context.
`java.lang.ClassLoader` | `getLoader()` A classloader to use when locating classes.
`java.util.Locale` | `getLocale()` Gets the locale for this HelpSet.
`Map` | `getLocalMap()` Get the local (i.e. non-recursive) Map for this HelpSet.
`NavigatorView` | `getNavigatorView(java.lang.String name)` Gets the NavigatorView with a specific name.
`NavigatorView[]` | `getNavigatorViews()` NavigatorView describes the navigator views that are requested by this HelpSet.
`HelpSet.Presentation` | `getPresentation(java.lang.String name)` Gets the HelpSet.Presentation with a specific name.
`HelpSet.Presentation[]` | `getPresentations()` HelpSet.Presentation describes the presentations that are defined by this HelpSet.
`java.lang.String` | `getTitle()` Gets the title of this HelpSet.
`static HelpSet` | `parse(java.net.URL url, java.lang.ClassLoader loader, javax.help.HelpSetFactory factory)` Parsed a HelpSet file.
`void` | `parseInto(java.net.URL url, javax.help.HelpSetFactory factory)` Parses into this HelpSet.
`boolean` | `remove(HelpSet hs)` Removes a HelpSet from this HelpSet; HelpSetEvents are generated Return True if it is found, otherwise false.
`void` | `removeHelpSetListener(HelpSetListener l)` Removes a listener previously added with `addHelpSetListener`
`void` | `setHomeID(java.lang.String homeID)` Sets the Home ID for a HelpSet.
`void` | `setKeyData(java.lang.Object context, java.lang.String key, java.lang.Object data)` Sets some local KeyData on a given context.
`void` | `setLocalMap(Map map)` Set the Map for this HelpSet.
`void` | `setTitle(java.lang.String title)` Sest the title for this HelpSet.
`java.lang.String` | `toString()` Prints Name for this HelpSet.

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### publicIDString

    public static final java.lang.String publicIDString

  PublicID (known to this XML processor) to the DTD for version 1.0 of the HelpSet

  See Also:
    Constant Field Values

### publicIDString_V2

    public static final java.lang.String publicIDString_V2

  PublicID (known to this XML processor) to the DTD for version 2.0 of the HelpSet

  See Also:
    Constant Field Values

### implRegistry

    public static final java.lang.Object implRegistry

  Information for implementation customization. helpBroker/class is used to locate the class for a HelpBroker. helpBroker/loader is used to determine the ClassLoader to use.

### helpBrokerClass

    public static final java.lang.String helpBrokerClass

See Also:
  Constant Field Values

### helpBrokerLoader

    public static final java.lang.String helpBrokerLoader

See Also:
  Constant Field Values

### kitTypeRegistry

    public static final java.lang.Object kitTypeRegistry

  HelpSet context information. A HelpSet can map between keys (String) and values (Strings). There is a per-HelpSet value and a default value. The per-HelpSet value is specified in the appropriate section of the HelpSet file. The default value is global and only specified at class initialization time.

### kitLoaderRegistry

    public static final java.lang.Object kitLoaderRegistry

Constructor Detail

### HelpSet

    public HelpSet(java.lang.ClassLoader loader)

  Creates an empty HelpSet that one can parse into.

Parameters:
  `loader` - The ClassLoader to use. If loader is null, the default ClassLoader is used.

### HelpSet

    public HelpSet()

  Creates an empty HelpSet. Uses the default ClassLoader

### HelpSet

    public HelpSet(java.lang.ClassLoader loader,
                   java.net.URL helpset)
            throws HelpSetException

  Creates a HelpSet. The locale for the data is either that indicated in the `lang` attribute of the `helpset` tag, or `Locale.getDefault()` if the `lang` attribute is not present.

Parameters:
  `loader` - The class loader to use to locate any classes required by the navigators in the Helpset If loader is null, the default ClassLoader is used.
  `helpset` - The URL to the HelpSet "file"
Throws:
  `HelpSetException` - if there are problems parsing the helpset

Method Detail

### findHelpSet

    public static java.net.URL findHelpSet(java.lang.ClassLoader cl,
                                           java.lang.String shortName,
                                           java.lang.String extension,
                                           java.util.Locale locale)

  Locates a HelpSet file and return its URL. Applies localization conventions.

  Parameters:
    `cl` - The classloader to use when searching for the resource with the appropriate name. If cl is null the default ClassLoader is used.
    `shortName` - The shortname of the resource.
    `extension` - The extension of the resource.
    `locale` - The desired Locale
  See Also:
    `HelpUtilities`

### findHelpSet

    public static java.net.URL findHelpSet(java.lang.ClassLoader cl,
                                           java.lang.String name,
                                           java.util.Locale locale)

  Locates a HelpSet file and return its URL. If the name does not end with the ".hs" extension, the ".hs" extension is appended and localization rules are applied to it.

  Parameters:
    `cl` - The classloader to use. If cl is null the default ClassLoader is used.
    `name` - The name of the resource.
    `locale` - The desired locale.

### findHelpSet

    public static java.net.URL findHelpSet(java.lang.ClassLoader cl,
                                           java.lang.String name)

  As above but default on locale to Locale.getDefault()

  Parameters:
    `cl` - The ClassLoader to use. If cl is null the default ClassLoader is used.
    `name` - The name of the resource.
  Returns:
    Null if not found.

### createHelpBroker

    public HelpBroker createHelpBroker()

  Creates a presentation object for this HelpSet. Consults the `implRegistry` of `KeyData` for the class name (as helpBrokerClass) and for the ClassLoader instance (as helpBrokerLoader) and then tries to instantiate that class. It then invokes `setHelpSet()` with this instance of HelpSet as the argument. The resulting object is returned.

  See Also:
    `createHelpBroker(String)`

### createHelpBroker

    public HelpBroker createHelpBroker(java.lang.String presentationName)

  Creates a presentation object for this HelpSet. Consults the `implRegistry` of `KeyData` for the class name (as helpBrokerClass) and for the ClassLoader instance (as helpBrokerLoader) and then tries to instantiate that class. It then invokes `setHelpSet()` with this instance of HelpSet as the argument. The resulting object is returned.

  Returns:
    HelpBroker The created HelpBroker
  Since:
    2.0
  See Also:
    `createHelpBroker()`

### add

    public void add(HelpSet hs)

  Adds a HelpSet, HelpSetEvents are generated. Adding a composed HelpSet to another is equivalent to adding all the HelpSets individually.

  Parameters:
    `hs` - The HelpSet to add.

### remove

    public boolean remove(HelpSet hs)

  Removes a HelpSet from this HelpSet; HelpSetEvents are generated Return True if it is found, otherwise false.

  Parameters:
    `hs` - The HelpSet to remove.
  Returns:
    False if the hs is null or was not in this HelpSet

### getHelpSets

    public java.util.Enumeration getHelpSets()

  Enumerates all the HelpSets that have been added to this one.

  Returns:
    An enumeration of the HelpSets that have been added to this HelpSet.

### contains

    public boolean contains(HelpSet hs)

  Determines if a HelpSet is a sub-HelpSet of this object.

  Parameters:
    `hs` - The HelpSet to check
  Returns:
    true If `hs` is contained in this HelpSet or in one of its children.

### addHelpSetListener

    public void addHelpSetListener(HelpSetListener l)

  Adds a listener for the HelpSetEvent posted after the model has changed.

  Parameters:
    `l` - - The listener to add.
  Throws:
    `java.lang.IllegalArgumentException` - if l is null.
  See Also:
    `javax.help.HelpSet#removeHelpSetListener.`

### removeHelpSetListener

    public void removeHelpSetListener(HelpSetListener l)

  Removes a listener previously added with `addHelpSetListener`

  Parameters:
    `l` - - The listener to remove.
  Throws:
    `java.lang.IllegalArgumentException` - if l is null.
  See Also:
    `javax.help.HelpSet#addHelpSetListener.`

### getTitle

    public java.lang.String getTitle()

  Gets the title of this HelpSet.

  Returns:
    the title

### setTitle

    public void setTitle(java.lang.String title)

  Sest the title for this HelpSet. This is a bound property.

  Parameters:
    `title` - The title to set.

### getLocale

    public java.util.Locale getLocale()

  Gets the locale for this HelpSet.

  Returns:
    The locale.

### getHomeID

    public Map.ID getHomeID()

  Returns the ID to visit when the user makes a "go home" gesture. This can be identified in the project file, but may also be changed programmatically or (possibly) via the UI.

  Returns:
    The ID of home. A null is returned if homeID is null or if an ID cannot be created for the homeID.

### setHomeID

    public void setHomeID(java.lang.String homeID)

  Sets the Home ID for a HelpSet. This is a bound property.

### getCombinedMap

    public Map getCombinedMap()

  The map for this HelpSet. This map involves the closure of this HelpSet's children HelpSets.

  Returns:
    The map

### getLocalMap

    public Map getLocalMap()

  Get the local (i.e. non-recursive) Map for this HelpSet. This Map does not include the Maps for its children.

  Returns:
    The Map object that associates ID->URL. A null map is valid.

### setLocalMap

    public void setLocalMap(Map map)

  Set the Map for this HelpSet. This Map object is not recursive; for example, it does not include the Maps for its children.

### getHelpSetURL

    public java.net.URL getHelpSetURL()

  The URL that is the base for this HelpSet.

  Returns:
    The URL that is base to this HelpSet.

### getLoader

    public java.lang.ClassLoader getLoader()

  A classloader to use when locating classes.

  Returns:
    The ClassLoader to use when locating classes mentioned in this HelpSet.

### getNavigatorViews

    public NavigatorView[] getNavigatorViews()

  NavigatorView describes the navigator views that are requested by this HelpSet.

  Returns:
    The array of NavigatorView.

### getNavigatorView

    public NavigatorView getNavigatorView(java.lang.String name)

  Gets the NavigatorView with a specific name.

### getPresentations

    public HelpSet.Presentation[] getPresentations()

  HelpSet.Presentation describes the presentations that are defined by this HelpSet.

  Returns:
    The array of HelpSet.Presentations.

### getPresentation

    public HelpSet.Presentation getPresentation(java.lang.String name)

  Gets the HelpSet.Presentation with a specific name.

### getDefaultPresentation

    public HelpSet.Presentation getDefaultPresentation()

### toString

    public java.lang.String toString()

  Prints Name for this HelpSet.

### parse

    public static HelpSet parse(java.net.URL url,
                                java.lang.ClassLoader loader,
                                javax.help.HelpSetFactory factory)

  Parsed a HelpSet file.

### parseInto

    public void parseInto(java.net.URL url,
                          javax.help.HelpSetFactory factory)

  Parses into this HelpSet.

### getKeyData

    public java.lang.Object getKeyData(java.lang.Object context,
                                       java.lang.String key)

  Gets some Data for a Key in a given context. Local (per HelpSet instance) data is searched first, then defaults.

### setKeyData

    public void setKeyData(java.lang.Object context,
                           java.lang.String key,
                           java.lang.Object data)

  Sets some local KeyData on a given context. The information is set on a per-HelpSet basis.

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