Package javax.help

Interface HelpBroker

All Known Implementing Classes:
DefaultHelpBroker, ServletHelpBroker

public interface HelpBroker
The HelpBroker is the default presentation of a HelpSet. A HelpBroker is an abstraction of the presentation for a HelpSet; a straight-forward implementation is a JHelp() on the HelpSet. A HelpBroker can be asked to show a given Navigational View, and can display a given ID (help topic).
See Also:
  • Method Details

    • setHelpSet

      void setHelpSet(HelpSet hs)
      Sets the current HelpSet for this HelpBroker.
      Parameters:
      hs - The HelpSet this JavaHelp is presenting.
    • getHelpSet

      HelpSet getHelpSet()
      Gets the current HelpSet for this JavaHelp object.
      Returns:
      The HelpSet this JavaHelp is presenting.
    • setHelpSetPresentation

      void setHelpSetPresentation(HelpSet.Presentation hsPres)
      Sets the presentation attributes from a HelpSet.Presentation. The HelpSet.Presentation must be in the current HelpSet.
      Parameters:
      hsPres - The HelpSet.Presentation
      Since:
      2.0
    • getLocale

      Locale getLocale()
      Returns the locale of this object.
      Returns:
      The locale of this object.
    • setLocale

      void setLocale(Locale l)
      Sets the locale of this HelpBroker.
      Parameters:
      l - The locale to become this component's locale.
      See Also:
    • getFont

      Font getFont()
      Gets the font for this HelpBroker.
    • setFont

      void setFont(Font f)
      Sets the font for this HelpBroker.
    • setCurrentView

      void setCurrentView(String name)
      Activates the Navigator view with a given name.
      Throws:
      IllegalArgumentException - if the name is not valid.
    • getCurrentView

      String getCurrentView()
      Gets name of the current navigational view.
      Returns:
      The name of the current navigational view.
    • initPresentation

      void initPresentation()
      Initializes the presentation. This method allows the presentation to be initialized but not displayed. Typically this is done in a separate thread to reduce the intialization time.
    • setDisplayed

      void setDisplayed(boolean displayed) throws UnsupportedOperationException
      Displays the presentation to the user.
      Parameters:
      displayed - Makes the presentation visible or not.
      Throws:
      HelpBroker.UnsupportedOperationException - If the operation is not supported.
      UnsupportedOperationException
    • isDisplayed

      boolean isDisplayed()
      Determines if the presentation is visible.
      Returns:
      Whether the presentation is currently visible.
    • setLocation

      void setLocation(Point p) throws UnsupportedOperationException
      Sets the position of the presentation. This operation may throw an UnsupportedOperationException if the underlying implementation does not allow this.
      Throws:
      UnsupportedOperationException
    • getLocation

      Point getLocation() throws UnsupportedOperationException
      Gets the location of the presentation. This operation may throw an UnsupportedOperationException if the underlying implementation does not allow this.
      Throws:
      UnsupportedOperationException
    • setSize

      void setSize(Dimension d) throws UnsupportedOperationException
      Sets the size of the presentation. This operation may throw an UnsupportedOperationException if the underlying implementation does not allow this.
      Throws:
      UnsupportedOperationException
    • getSize

      Gets the size of the presentation. This operation may throw an UnsupportedOperationException if the underlying implementation does not allow this.
      Throws:
      UnsupportedOperationException
    • setScreen

      void setScreen(int screen) throws UnsupportedOperationException
      Set the screen the presentation is to be displayed on This operation may throw an UnsupportedOperationException if the underlying implementation does not allow this.
      Throws:
      UnsupportedOperationException
    • getScreen

      int getScreen() throws UnsupportedOperationException
      Get ths the screen the presentation is displayed on This operation may throw an UnsupportedOperationException if the underlying implementation does not allow this.
      Throws:
      UnsupportedOperationException
    • setViewDisplayed

      void setViewDisplayed(boolean displayed)
      Hides/Shows Navigational Views.
      Parameters:
      displayed - Make the navigational views visible or not.
    • isViewDisplayed

      boolean isViewDisplayed()
      Determines if the Navigational View is visible.
      Returns:
      Whether the navigational views are visible.
    • showID

      void showID(Map.ID id, String presentation, String presentationName) throws InvalidHelpSetContextException
      Displays this ID in a given presentation
      Parameters:
      id - An ID that identifies the topic to display.
      presentation - The Presentation class to display the Help in.
      presentationName - The name of a Presentation section from a HelpSet to use. For some Presentations this will also be the name to apply to the Presentation.
      Throws:
      InvalidHelpSetContextException - If id.hs is not contanied in the current HelpSet of this broker.
      See Also:
    • showID

      void showID(String id, String presentation, String presentationName) throws BadIDException
      Displays this ID in a particular presentation
      Parameters:
      id - A String identifying the topic to show relative to getHelpSet()
      presentation - The Presentation class to display the Help in.
      presentationName - The name of a Presentation section from a HelpSet to use. For some Presentations this will also be the name to apply to the Presentation.
      Throws:
      BadIDException - if the ID is not valid in the map.
      See Also:
    • setCurrentID

      void setCurrentID(Map.ID id) throws InvalidHelpSetContextException
      Displays this ID.
      Parameters:
      id - An ID that identifies the topic to display.
      Throws:
      InvalidHelpSetContextException - If id.hs is not contanied in the current HelpSet of this broker.
      See Also:
    • setCurrentID

      void setCurrentID(String id) throws BadIDException
      Displays this ID. HelpVisitListeners are notified.
      Parameters:
      id - A String identifying the topic to show relative to getHelpSet()
      Throws:
      BadIDException - if the ID is not valid in the map.
    • getCurrentID

      Map.ID getCurrentID()
      Determines The currently displayed ID (if any).
      Returns:
      The ID being shown.
    • setCurrentURL

      void setCurrentURL(URL url)
      Displays this ID. HelpVisitListeners are notified. The currentID changes if there is a matching ID for this URL.
      Parameters:
      url - The URL to show
    • getCurrentURL

      URL getCurrentURL()
      Determines the currently displayed ID.
      Returns:
      The URL being shown.
    • enableHelpKey

      void enableHelpKey(Component comp, String id, HelpSet hs)
      Enables the Help key on a component. This method works best when the component is the rootPane of a JFrame in Swing implementations, or a java.awt.Window (or subclass thereof) in AWT implementations. This method sets the default helpID and HelpSet for the component and registers keyboard actions to trap the "Help" keypress. When the "Help" key is pressed, if the object with the current focus has a helpID, the helpID is displayed, otherwise the default helpID is displayed.
      Parameters:
      comp - The component to enable the keyboard actions on.
      id - The default HelpID to be displayed.
      hs - The default HelpSet to be displayed.
    • enableHelpKey

      void enableHelpKey(Component comp, String id, HelpSet hs, String presentation, String presentationName)
      Enables the Help key on a component. This method works best when the component is the rootPane of a JFrame in Swing implementations, or a java.awt.Window (or subclass thereof) in AWT implementations. This method sets the default helpID and HelpSet for the component and registers keyboard actions to trap the "Help" keypress. When the "Help" key is pressed, if the object with the current focus has a helpID, the helpID is displayed, otherwise the default helpID is displayed.
      Parameters:
      comp - The component to enable the keyboard actions on.
      id - The default HelpID to be displayed.
      hs - The default HelpSet to be displayed.
      presentation - The Presentation class to display the Help in.
      presentationName - The name of a Presentation section from a HelpSet to use. For some Presentations this will also be the name to apply to the Presentation.
      See Also:
    • enableHelp

      void enableHelp(Component comp, String id, HelpSet hs)
      Enables help for a component. This method sets a component's helpID and HelpSet.
      See Also:
      • CSH.setHelpID
      • CSH.setHelpSet
    • enableHelp

      void enableHelp(MenuItem comp, String id, HelpSet hs)
      Enables help for a MenuItem. This method sets a component's helpID and HelpSet.
      See Also:
      • CSH.setHelpID
      • CSH.setHelpSet
    • enableHelpOnButton

      void enableHelpOnButton(Component comp, String id, HelpSet hs) throws IllegalArgumentException
      Enables help for a component. This method sets a component's helpID and HelpSet and adds an ActionListener. When an action is performed it displays the component's helpID and HelpSet in the default viewer. If the component is not a javax.swing.AbstractButton or a java.awt.Button an IllegalArgumentException is thrown.
      Throws:
      IllegalArgumentException
      See Also:
    • enableHelpOnButton

      void enableHelpOnButton(MenuItem comp, String id, HelpSet hs)
      Enables help for a MenuItem. This method sets a component's helpID and HelpSet and adds an ActionListener. When an action is performed it displays the component's helpID and HelpSet in the default viewer.
      See Also:
    • enableHelpOnButton

      void enableHelpOnButton(Object obj, String id, HelpSet hs, String presentation, String presentationName) throws IllegalArgumentException
      Enables help for an object. This method sets a object's helpID and HelpSet and adds an ActionListener. When an action is performed it displays the component's helpID and HelpSet in the default viewer or the presenation if defined. If the component is not a javax.swing.AbstractButton or a java.awt.Button an IllegalArgumentException is thrown.
      Parameters:
      comp - The component to enable the keyboard actions on.
      id - The default HelpID to be displayed.
      hs - The default HelpSet to be displayed.
      presentation - The Presentation class to display the Help in.
      presentationName - The name of a Presentation section from a HelpSet to use. For some Presentations this will also be the name to apply to the Presentation.
      Throws:
      IllegalArgumentException
      See Also: