org.apache.batik.bridge

Class UserAgentAdapter

java.lang.Object

org.apache.batik.bridge.UserAgentAdapter

All Implemented Interfaces:

UserAgent

public class UserAgentAdapter
extends Object
implements UserAgent

An abstract user agent adaptor implementation. It exists to simply the creation of UserAgent instances.

Version:

$Id: UserAgentAdapter.java 1805408 2017-08-18 12:21:52Z ssteiner $

Author:

Thomas DeWeese

Field Summary

Fields

Modifier and Type	Field and Description
protected BridgeContext	ctx The BridgeContext to use for error information.
protected Set	extensions
protected Set	FEATURES

Constructor Summary

Constructors

Constructor and Description
UserAgentAdapter()

Method Summary

Methods

Modifier and Type	Method and Description
void	addStdFeatures() Adds the standard SVG feature strings to the set of features supported by this user agent.
void	checkLoadExternalResource(ParsedURL resourceURL, ParsedURL docURL) This method throws a SecurityException if the resource found at url and referenced from docURL should not be loaded.
void	checkLoadScript(String scriptType, ParsedURL scriptURL, ParsedURL docURL) This method throws a SecurityException if the script of given type, found at url and referenced from docURL should not be loaded.
void	deselectAll() This user agent doesn't display text selections so nothing to clear.
void	displayError(Exception e) Display the specified error (forwards call to displayError(String))
void	displayError(String message) Display the specified error message (forwards call to displayMessage).
void	displayMessage(String message) Display the specified message.
String	getAlternateStyleSheet() Returns this user agent's alternate style-sheet title.
float	getBolderFontWeight(float f) Returns a bolder font-weight.
org.w3c.dom.svg.SVGDocument	getBrokenLinkDocument(Element e, String url, String message) This Implementation simply throws a BridgeException.
Point	getClientAreaLocationOnScreen() Unsupported operation.
String	getDefaultFontFamily() Returns the default font family.
EventDispatcher	getEventDispatcher() Unsupported operation.
ExternalResourceSecurity	getExternalResourceSecurity(ParsedURL resourceURL, ParsedURL docURL) Returns the security settings for the given resource url and document url
FontFamilyResolver	getFontFamilyResolver() Returns the Font Family Resolver
String	getLanguages() Returns the user language "en" (english).
float	getLighterFontWeight(float f) Returns a lighter font-weight.
String	getMedia() Returns this user agent's CSS media.
float	getMediumFontSize() Returns the medium font size.
float	getPixelToMM() Returns the size of a px CSS unit in millimeters.
float	getPixelUnitToMillimeter() Returns the size of a px CSS unit in millimeters.
ScriptSecurity	getScriptSecurity(String scriptType, ParsedURL scriptURL, ParsedURL docURL) Returns the security settings for the given script type, script url and document url
static float	getStandardBolderFontWeight(float f) Returns a bolder font-weight.
static float	getStandardLighterFontWeight(float f) Returns a lighter font-weight.
AffineTransform	getTransform() Unsupported operation.
String	getUserStyleSheetURI() Returns the user stylesheet
Dimension2D	getViewportSize() Returns the default size of this user agent (400x400).
String	getXMLParserClassName() Returns the XML parser to use
void	handleElement(Element elt, Object data) Notifies the UserAgent that the input element has been found in the document.
boolean	hasFeature(String s) Tells whether the given feature is supported by this user agent.
boolean	isXMLParserValidating() Returns false.
void	loadDocument(String url) This method should load a new document described by the supplied URL.
void	openLink(org.w3c.dom.svg.SVGAElement elt) Unsupported operation.
void	registerExtension(BridgeExtension ext) Lets the bridge tell the user agent that the following ex tension is supported by the bridge.
void	runThread(Thread t) Unsupported operation.
void	setBridgeContext(BridgeContext ctx) Sets the BridgeContext to be used for error information.
void	setSVGCursor(Cursor cursor) Unsupported operation.
void	setTextSelection(Mark start, Mark end) This user agent doesn't display text selections.
void	setTransform(AffineTransform at) Unsupported operation.
void	showAlert(String message) Shows an alert dialog box.
boolean	showConfirm(String message) Shows a confirm dialog box.
String	showPrompt(String message) Shows a prompt dialog box.
String	showPrompt(String message, String defaultValue) Shows a prompt dialog box.
boolean	supportExtension(String s) Tells whether the given extension is supported by this user agent.

Methods inherited from class java.lang.Object

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

Field Detail

FEATURES

protected Set FEATURES

extensions

protected Set extensions

ctx

protected BridgeContext ctx

The BridgeContext to use for error information.

Constructor Detail

UserAgentAdapter

public UserAgentAdapter()

Method Detail

setBridgeContext

public void setBridgeContext(BridgeContext ctx)

Sets the BridgeContext to be used for error information.

addStdFeatures

public void addStdFeatures()

Adds the standard SVG feature strings to the set of features supported by this user agent.

getViewportSize

public Dimension2D getViewportSize()

Returns the default size of this user agent (400x400).

Specified by:

getViewportSize in interface UserAgent

displayMessage

public void displayMessage(String message)

Display the specified message.

Specified by:

displayMessage in interface UserAgent

displayError

public void displayError(String message)

Display the specified error message (forwards call to displayMessage).

displayError

public void displayError(Exception e)

Display the specified error (forwards call to displayError(String))

Specified by:

displayError in interface UserAgent

showAlert

public void showAlert(String message)

Shows an alert dialog box.

Specified by:

showAlert in interface UserAgent

showPrompt

public String showPrompt(String message)

Shows a prompt dialog box.

Specified by:

showPrompt in interface UserAgent

showPrompt

public String showPrompt(String message,
                String defaultValue)

Shows a prompt dialog box.

Specified by:

showPrompt in interface UserAgent

showConfirm

public boolean showConfirm(String message)

Shows a confirm dialog box.

Specified by:

showConfirm in interface UserAgent

getPixelUnitToMillimeter

public float getPixelUnitToMillimeter()

Returns the size of a px CSS unit in millimeters.

Specified by:

getPixelUnitToMillimeter in interface UserAgent

getPixelToMM

public float getPixelToMM()

Returns the size of a px CSS unit in millimeters. This will be removed after next release.

Specified by:

getPixelToMM in interface UserAgent

See Also:

getPixelUnitToMillimeter()

getDefaultFontFamily

public String getDefaultFontFamily()

Returns the default font family.

Specified by:

getDefaultFontFamily in interface UserAgent

getMediumFontSize

public float getMediumFontSize()

Returns the medium font size.

Specified by:

getMediumFontSize in interface UserAgent

getLighterFontWeight

public float getLighterFontWeight(float f)

Returns a lighter font-weight.

Specified by:

getLighterFontWeight in interface UserAgent

getBolderFontWeight

public float getBolderFontWeight(float f)

Returns a bolder font-weight.

Specified by:

getBolderFontWeight in interface UserAgent

getLanguages

public String getLanguages()

Returns the user language "en" (english).

Specified by:

getLanguages in interface UserAgent

getMedia

public String getMedia()

Returns this user agent's CSS media.

Specified by:

getMedia in interface UserAgent

getAlternateStyleSheet

public String getAlternateStyleSheet()

Returns this user agent's alternate style-sheet title.

Specified by:

getAlternateStyleSheet in interface UserAgent

getUserStyleSheetURI

public String getUserStyleSheetURI()

Returns the user stylesheet

Specified by:

getUserStyleSheetURI in interface UserAgent

Returns:

null if no user style sheet was specified.

getXMLParserClassName

public String getXMLParserClassName()

Returns the XML parser to use

Specified by:

getXMLParserClassName in interface UserAgent

isXMLParserValidating

public boolean isXMLParserValidating()

Returns false. The XML parser is not in validation mode.

Specified by:

isXMLParserValidating in interface UserAgent

getEventDispatcher

public EventDispatcher getEventDispatcher()

Unsupported operation.

Specified by:

getEventDispatcher in interface UserAgent

openLink

public void openLink(org.w3c.dom.svg.SVGAElement elt)

Unsupported operation.

Specified by:

openLink in interface UserAgent

Parameters:

elt - The activated link element.

setSVGCursor

public void setSVGCursor(Cursor cursor)

Unsupported operation.

Specified by:

setSVGCursor in interface UserAgent

Parameters:

cursor - the new cursor

setTextSelection

public void setTextSelection(Mark start,
                    Mark end)

This user agent doesn't display text selections.

Specified by:

setTextSelection in interface UserAgent

Parameters:

start - The Mark for the start of the selection.

end - The Mark for the end of the selection.

deselectAll

public void deselectAll()

This user agent doesn't display text selections so nothing to clear.

Specified by:

deselectAll in interface UserAgent

runThread

public void runThread(Thread t)

Unsupported operation.

getTransform

public AffineTransform getTransform()

Unsupported operation.

Specified by:

getTransform in interface UserAgent

setTransform

public void setTransform(AffineTransform at)

Unsupported operation.

Specified by:

setTransform in interface UserAgent

getClientAreaLocationOnScreen

public Point getClientAreaLocationOnScreen()

Unsupported operation.

Specified by:

getClientAreaLocationOnScreen in interface UserAgent

hasFeature

public boolean hasFeature(String s)

Tells whether the given feature is supported by this user agent.

Specified by:

hasFeature in interface UserAgent

supportExtension

public boolean supportExtension(String s)

Tells whether the given extension is supported by this user agent.

Specified by:

supportExtension in interface UserAgent

registerExtension

public void registerExtension(BridgeExtension ext)

Lets the bridge tell the user agent that the following ex tension is supported by the bridge.

Specified by:

registerExtension in interface UserAgent

handleElement

public void handleElement(Element elt,
                 Object data)

Notifies the UserAgent that the input element has been found in the document. This is sometimes called, for example, to handle <a> or <title> elements in a UserAgent-dependant way.

Specified by:

handleElement in interface UserAgent

getScriptSecurity

public ScriptSecurity getScriptSecurity(String scriptType,
                               ParsedURL scriptURL,
                               ParsedURL docURL)

Returns the security settings for the given script type, script url and document url

Specified by:

getScriptSecurity in interface UserAgent

Parameters:

scriptType - type of script, as found in the type attribute of the <script> element.

scriptURL - url for the script, as defined in the script's xlink:href attribute. If that attribute was empty, then this parameter should be null

docURL - url for the document into which the script was found.

checkLoadScript

public void checkLoadScript(String scriptType,
                   ParsedURL scriptURL,
                   ParsedURL docURL)
                     throws SecurityException

This method throws a SecurityException if the script of given type, found at url and referenced from docURL should not be loaded. This is a convenience method to call checkLoadScript on the ScriptSecurity strategy returned by getScriptSecurity.

Specified by:

checkLoadScript in interface UserAgent

Parameters:

scriptType - type of script, as found in the type attribute of the <script> element.

scriptURL - url for the script, as defined in the script's xlink:href attribute. If that attribute was empty, then this parameter should be null

docURL - url for the document into which the script was found.

Throws:

SecurityException

getExternalResourceSecurity

public ExternalResourceSecurity getExternalResourceSecurity(ParsedURL resourceURL,
                                                   ParsedURL docURL)

Returns the security settings for the given resource url and document url

Specified by:

getExternalResourceSecurity in interface UserAgent

Parameters:

resourceURL - url for the resource, as defined in the resource's xlink:href attribute. If that attribute was empty, then this parameter should be null

docURL - url for the document into which the resource was found.

checkLoadExternalResource

public void checkLoadExternalResource(ParsedURL resourceURL,
                             ParsedURL docURL)
                               throws SecurityException

This method throws a SecurityException if the resource found at url and referenced from docURL should not be loaded. This is a convenience method to call checkLoadExternalResource on the ExternalResourceSecurity strategy returned by getExternalResourceSecurity.

Specified by:

checkLoadExternalResource in interface UserAgent

Parameters:

resourceURL - url for the resource, as defined in the resource's xlink:href attribute. If that attribute was empty, then this parameter should be null

docURL - url for the document into which the resource was found.

Throws:

SecurityException

getStandardLighterFontWeight

public static float getStandardLighterFontWeight(float f)

Returns a lighter font-weight.

getStandardBolderFontWeight

public static float getStandardBolderFontWeight(float f)

Returns a bolder font-weight.

getBrokenLinkDocument

public org.w3c.dom.svg.SVGDocument getBrokenLinkDocument(Element e,
                                                String url,
                                                String message)

This Implementation simply throws a BridgeException.

Specified by:

getBrokenLinkDocument in interface UserAgent

Parameters:

e - The <image> element that can't be loaded.

url - The resolved url that can't be loaded.

message - As best as can be determined the reason it can't be loaded (not available, corrupt, unknown format,...).

loadDocument

public void loadDocument(String url)

This method should load a new document described by the supplied URL.

Specified by:

loadDocument in interface UserAgent

Parameters:

url - The url to be loaded as a string.

getFontFamilyResolver

public FontFamilyResolver getFontFamilyResolver()

Returns the Font Family Resolver

Specified by:

getFontFamilyResolver in interface UserAgent