Package org.apache.turbine.services.pull.tools

Class UITool

java.lang.Object

org.apache.turbine.services.pull.tools.UITool

All Implemented Interfaces:

ApplicationTool

public class UITool
extends Object
implements ApplicationTool

Manages all UI elements for a Turbine Application. Any UI element can be accessed in any template using the $ui handle (assuming you use the default PullService configuration). So, for example, you could access the background color for your pages by using $ui.bgcolor

This implementation provides a single level of inheritance in that if a property does not exist in a non-default skin, the value from the default skin will be used. By only requiring values different to those stored in the default skin to appear in the non-default skins the amount of memory consumed in cases where the UserManager instance is used at a non-global scope will potentially be reduced due to the fact that a shared instance of the default skin properties can be used. Note that this inheritance only applies to property values - it does not apply to any images or stylesheets that may form part of your skins.

This is an application pull tool for the template system. You should not use it in a normal application! Within Java code you should use TurbineUI.

This is an application pull tool for the template system. You should only use it in a normal application to set the skin attribute for a user (setSkin(User user, String skin)) and to initialize it for the user, otherwise use TurbineUI is probably the way to go.

Version:

$Id$

Author:

Jason van Zyl, James Coltman, Henning P. Schmiedehausen, Scott Eade

See Also:

UIService

Field Summary

Fields

Modifier and Type	Field	Description
static String	SKIN_ATTRIBUTE	Attribute name of skinName value in User's temp hashmap.

Constructor Summary

Constructors

Constructor	Description
UITool()

Method Summary

Modifier and Type	Method	Description
String	get(String key)	Retrieve a skin property.
String	getScript(String filename)	Retrieve the URL for a given script that is part of the skin.
String	getScript(String filename, RunData data)	Retrieve the URL for a given script that is part of the skin.
String	getScript(String filename, ServerData serverData)	Retrieve the URL for a given script that is part of the skin.
String	getSkin()	Retrieve the skin name.
String[]	getSkinNames()	Provide access to the list of available skin names.
String	getStylecss()	Retrieve the URL for the style sheet that is part of the skin.
String	getStylecss(RunData data)	Retrieve the URL for the style sheet that is part of the skin.
String	getStylecss(ServerData serverData)	Retrieve the URL for the style sheet that is part of the skin.
String	getWebappSkinName()	Get the name of the default skin name for the web application from the TurbineResources.properties file.
String	image(String imageId)	Retrieve the URL for an image that is part of the skin.
String	image(String imageId, RunData data)	Retrieve the URL for an image that is part of the skin.
String	image(String imageId, ServerData serverData)	Retrieve the URL for an image that is part of the skin.
void	init(Object data)	Initialize the UITool object.
void	refresh()	Refresh the tool.
void	setSkin()	Set the skin name to the skin from the TurbineResources.properties file.
void	setSkin(String skinName)	Set the skin name to the specified skin.
protected void	setSkin(User user)	Set the skin name when the tool is configured to be loaded on a per-session basis.
static void	setSkin(User user, String skin)	Set the skin name in the user's temp hashmap for the current session.
protected void	setSkin(RunData data)	Set the skin name when the tool is configured to be loaded on a per-request basis.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SKIN_ATTRIBUTE

public static final String SKIN_ATTRIBUTE

Attribute name of skinName value in User's temp hashmap.

Constructor Detail

UITool

public UITool()

Method Detail

refresh

public void refresh()

Refresh the tool.

Specified by:

refresh in interface ApplicationTool

getSkinNames

public String[] getSkinNames()

Provide access to the list of available skin names.

Returns:

the available skin names.

getWebappSkinName

public String getWebappSkinName()

Get the name of the default skin name for the web application from the TurbineResources.properties file. If the property is not present the name of the default skin will be returned. Note that the web application skin name may be something other than default, in which case its properties will default to the skin with the name "default".

Returns:

the name of the default skin for the web application.

get

public String get(String key)

Retrieve a skin property. If the property is not defined in the current skin the value for the default skin will be provided. If the current skin does not exist then the skin configured for the webapp will be used. If the webapp skin does not exist the default skin will be used. If the default skin does not exist then null will be returned.

Parameters:

key - the key to retrieve from the skin.

Returns:

the value of the property for the named skin (defaulting to the default skin), the webapp skin, the default skin or null, depending on whether or not the property or skins exist.

getSkin

public String getSkin()

Retrieve the skin name.

Returns:

the selected skin name

setSkin

public void setSkin()

Set the skin name to the skin from the TurbineResources.properties file. If the property is not present use the "default" skin.

setSkin

public void setSkin(String skinName)

Set the skin name to the specified skin.

Parameters:

skinName - the skin name to use.

setSkin

protected void setSkin(RunData data)

Set the skin name when the tool is configured to be loaded on a per-request basis. By default it calls getSkin to return the skin specified in TurbineResources.properties. Developers can write a subclass of UITool that overrides this method to determine the skin to use based on information held in the request.

Parameters:

data - a RunData instance

setSkin

protected void setSkin(User user)

Set the skin name when the tool is configured to be loaded on a per-session basis. If the user's temp hashmap contains a value in the attribute specified by the String constant SKIN_ATTRIBUTE then that is returned. Otherwise it calls getSkin to return the skin specified in TurbineResources.properties.

Parameters:

user - a User instance

setSkin

public static void setSkin(User user,
                           String skin)

Set the skin name in the user's temp hashmap for the current session.

Parameters:

user - a User instance

skin - the skin name for the session

image

public String image(String imageId,
                    RunData data)

Retrieve the URL for an image that is part of the skin. The images are stored in the WEBAPP/resources/ui/skins/[SKIN]/images directory.

Use this if for some reason your server name, server scheme, or server port change on a per request basis. I'm not sure if this would happen in a load balanced situation. I think in most cases the image(String image) method would probably be enough, but I'm not absolutely positive.

Parameters:

imageId - the id of the image whose URL will be generated.

data - the RunData to use as the source of the ServerData to use as the basis for the URL.

Returns:

the image URL

image

public String image(String imageId,
                    ServerData serverData)

Retrieve the URL for an image that is part of the skin. The images are stored in the WEBAPP/resources/ui/skins/[SKIN]/images directory.

Use this if for some reason your server name, server scheme, or server port change on a per request basis. I'm not sure if this would happen in a load balanced situation. I think in most cases the image(String image) method would probably be enough, but I'm not absolutely positive.

Parameters:

imageId - the id of the image whose URL will be generated.

serverData - the serverData to use as the basis for the URL.

Returns:

the image URL

image

public String image(String imageId)

Retrieve the URL for an image that is part of the skin. The images are stored in the WEBAPP/resources/ui/skins/[SKIN]/images directory.

Parameters:

imageId - the id of the image whose URL will be generated.

Returns:

the image URL

getStylecss

public String getStylecss(RunData data)

Retrieve the URL for the style sheet that is part of the skin. The style is stored in the WEBAPP/resources/ui/skins/[SKIN] directory with the filename skin.css

Use this if for some reason your server name, server scheme, or server port change on a per request basis. I'm not sure if this would happen in a load balanced situation. I think in most cases the style() method would probably be enough, but I'm not absolutely positive.

Parameters:

data - the RunData to use as the source of the ServerData to use as the basis for the URL.

Returns:

the CSS URL

getStylecss

public String getStylecss(ServerData serverData)

Retrieve the URL for the style sheet that is part of the skin. The style is stored in the WEBAPP/resources/ui/skins/[SKIN] directory with the filename skin.css

Use this if for some reason your server name, server scheme, or server port change on a per request basis. I'm not sure if this would happen in a load balanced situation. I think in most cases the style() method would probably be enough, but I'm not absolutely positive.

Parameters:

serverData - the serverData to use as the basis for the URL.

Returns:

the CSS URL

getStylecss

public String getStylecss()

Retrieve the URL for the style sheet that is part of the skin. The style is stored in the WEBAPP/resources/ui/skins/[SKIN] directory with the filename skin.css

Returns:

the CSS URL

getScript

public String getScript(String filename,
                        RunData data)

Retrieve the URL for a given script that is part of the skin. The script is stored in the WEBAPP/resources/ui/skins/[SKIN] directory.

Use this if for some reason your server name, server scheme, or server port change on a per request basis. I'm not sure if this would happen in a load balanced situation. I think in most cases the image(String image) method would probably be enough, but I'm not absolutely positive.

Parameters:

filename - the name of the script file whose URL will be generated.

data - the RunDate to use as the source of the ServerData to use as the basis for the URL.

Returns:

the script URL

getScript

public String getScript(String filename,
                        ServerData serverData)

Retrieve the URL for a given script that is part of the skin. The script is stored in the WEBAPP/resources/ui/skins/[SKIN] directory.

Use this if for some reason your server name, server scheme, or server port change on a per request basis. I'm not sure if this would happen in a load balanced situation. I think in most cases the image(String image) method would probably be enough, but I'm not absolutely positive.

Parameters:

filename - the name of the script file whose URL will be generated.

serverData - the serverData to use as the basis for the URL.

Returns:

the script URL

getScript

public String getScript(String filename)

Retrieve the URL for a given script that is part of the skin. The script is stored in the WEBAPP/resources/ui/skins/[SKIN] directory.

Parameters:

filename - the name of the script file whose URL will be generated.

Returns:

the script URL

init

public void init(Object data)

Initialize the UITool object.

Specified by:

init in interface ApplicationTool

Parameters:

data - This is null, RunData or User depending upon specified tool scope.