org.apache.batik.bridge
Interface UserAgent

All Known Implementing Classes:
AbstractJSVGComponent.BridgeUserAgent, AbstractJSVGComponent.BridgeUserAgentWrapper, JSVGCanvas.CanvasUserAgent, SVGAbstractTranscoder.SVGAbstractTranscoderUserAgent, UserAgentAdapter

public interface UserAgent

An interface that provides access to the User Agent informations needed by the bridge.


Method Summary
 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()
          Informs the user agent that the text selection should be cleared.
 void displayError(Exception ex)
          Displays an error resulting from the specified Exception.
 void displayMessage(String message)
          Displays a message in the User Agent interface.
 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 method should return an image to be displayed when an image can't be loaded.
 Point getClientAreaLocationOnScreen()
          Returns the location on the screen of the client area in the UserAgent.
 String getDefaultFontFamily()
          Returns the default font family.
 EventDispatcher getEventDispatcher()
          Returns the event dispatcher to use.
 ExternalResourceSecurity getExternalResourceSecurity(ParsedURL resourceURL, ParsedURL docURL)
          Returns the security settings for the given resource url and document url
 String getLanguages()
          Returns the language settings.
 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
 AffineTransform getTransform()
          Returns the AffineTransform currently applied to the drawing by the UserAgent.
 String getUserStyleSheetURI()
          Returns the user stylesheet uri.
 Dimension2D getViewportSize()
          Returns the default size of the viewport.
 String getXMLParserClassName()
          Returns the class name of the XML parser.
 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 true if the XML parser must be in validation mode, false otherwise.
 void openLink(org.w3c.dom.svg.SVGAElement elt)
          Opens a link.
 void registerExtension(BridgeExtension ext)
          Lets the bridge tell the user agent that the following extension is supported by the bridge.
 void setSVGCursor(Cursor cursor)
          Informs the user agent to change the cursor.
 void setTextSelection(Mark start, Mark end)
          Informs the user agent that the text selection has changed.
 void setTransform(AffineTransform at)
          Sets the AffineTransform currently applied to the drawing by the UserAgent.
 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.
 

Method Detail

getEventDispatcher

EventDispatcher getEventDispatcher()
Returns the event dispatcher to use.


getViewportSize

Dimension2D getViewportSize()
Returns the default size of the viewport.


displayError

void displayError(Exception ex)
Displays an error resulting from the specified Exception.


displayMessage

void displayMessage(String message)
Displays a message in the User Agent interface.


showAlert

void showAlert(String message)
Shows an alert dialog box.


showPrompt

String showPrompt(String message)
Shows a prompt dialog box.


showPrompt

String showPrompt(String message,
                  String defaultValue)
Shows a prompt dialog box.


showConfirm

boolean showConfirm(String message)
Shows a confirm dialog box.


getPixelUnitToMillimeter

float getPixelUnitToMillimeter()
Returns the size of a px CSS unit in millimeters.


getPixelToMM

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

See Also:
getPixelUnitToMillimeter()

getMediumFontSize

float getMediumFontSize()
Returns the medium font size.


getLighterFontWeight

float getLighterFontWeight(float f)
Returns a lighter font-weight.


getBolderFontWeight

float getBolderFontWeight(float f)
Returns a bolder font-weight.


getDefaultFontFamily

String getDefaultFontFamily()
Returns the default font family.


getLanguages

String getLanguages()
Returns the language settings.


getUserStyleSheetURI

String getUserStyleSheetURI()
Returns the user stylesheet uri.

Returns:
null if no user style sheet was specified.

openLink

void openLink(org.w3c.dom.svg.SVGAElement elt)
Opens a link.

Parameters:
elt - The activated link element.

setSVGCursor

void setSVGCursor(Cursor cursor)
Informs the user agent to change the cursor.

Parameters:
cursor - the new cursor

setTextSelection

void setTextSelection(Mark start,
                      Mark end)
Informs the user agent that the text selection has changed.

Parameters:
start - The Mark for the start of the selection.
end - The Mark for the end of the selection.

deselectAll

void deselectAll()
Informs the user agent that the text selection should be cleared.


getXMLParserClassName

String getXMLParserClassName()
Returns the class name of the XML parser.


isXMLParserValidating

boolean isXMLParserValidating()
Returns true if the XML parser must be in validation mode, false otherwise.


getTransform

AffineTransform getTransform()
Returns the AffineTransform currently applied to the drawing by the UserAgent.


setTransform

void setTransform(AffineTransform at)
Sets the AffineTransform currently applied to the drawing by the UserAgent.


getMedia

String getMedia()
Returns this user agent's CSS media.


getAlternateStyleSheet

String getAlternateStyleSheet()
Returns this user agent's alternate style-sheet title.


getClientAreaLocationOnScreen

Point getClientAreaLocationOnScreen()
Returns the location on the screen of the client area in the UserAgent.


hasFeature

boolean hasFeature(String s)
Tells whether the given feature is supported by this user agent.


supportExtension

boolean supportExtension(String s)
Tells whether the given extension is supported by this user agent.


registerExtension

void registerExtension(BridgeExtension ext)
Lets the bridge tell the user agent that the following extension is supported by the bridge.


handleElement

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.


getScriptSecurity

ScriptSecurity getScriptSecurity(String scriptType,
                                 ParsedURL scriptURL,
                                 ParsedURL docURL)
Returns the security settings for the given script type, script url and document url

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

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.

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

ExternalResourceSecurity getExternalResourceSecurity(ParsedURL resourceURL,
                                                     ParsedURL docURL)
Returns the security settings for the given resource url and document url

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

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.

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

getBrokenLinkDocument

org.w3c.dom.svg.SVGDocument getBrokenLinkDocument(Element e,
                                                  String url,
                                                  String message)
This method should return an image to be displayed when an image can't be loaded. If it returns 'null' then a BridgeException will be thrown.

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, ...).


Copyright © 2008 Apache Software Foundation. All Rights Reserved.