org.ujac.print
Class DefaultAttributeHandler

java.lang.Object
  org.ujac.print.DefaultAttributeHandler

All Implemented Interfaces:

AttributeHandler

public class DefaultAttributeHandler
extends Object
implements AttributeHandler

Name: DefaultAttributeParser
Description: Default AttributeHandler implementation.

Author:

lauerc

Field Summary

TypedAttributeHandler	booleanHandler The boolean attribute handler.
TypedAttributeHandler	borderHandler The boolean attribute handler.
TypedAttributeHandler	colorHandler The color attribute handler.
TypedAttributeHandler	dimensionHandler The integer attribute handler.
TypedAttributeHandler	doubleHandler The double attribute handler.
TypedAttributeHandler	floatHandler The integer attribute handler.
TypedAttributeHandler	horizontalAlignmentHandler The horizontal alignment attribute handler.
TypedAttributeHandler	verticalAlignmentHandler The vertical alignment attribute handler.

Constructor Summary

DefaultAttributeHandler()
Constructs a DefaultAttributeHandler instance with no specific attributes.

Method Summary

TypedAttributeHandler	getBooleanHandler() Gets the boolean attribute handler.
TypedAttributeHandler	getBorderHandler() Gets the boolean attribute handler.
TypedAttributeHandler	getColorHandler() Gets the color attribute handler.
TypedAttributeHandler	getDimensionHandler() Gets the dimension attribute handler.
TypedAttributeHandler	getDoubleHandler() Gets the double attribute handler.
TypedAttributeHandler	getEscapeSequenceTextHandler() Gets the integer attribute handler.
TypedAttributeHandler	getFloatHandler() Gets the float attribute handler.
TypedAttributeHandler	getHorizontalAlignmentHandler() Gets the horizontal alignment attribute handler.
TypedAttributeHandler	getIntegerHandler() Gets the integer attribute handler.
TypedAttributeHandler	getTextHandler() Gets the integer attribute handler.
TypedAttributeHandler	getVerticalAlignmentHandler() Gets the vertical alignment attribute handler.
boolean	parseBooleanAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Gets the boolean value for the given attribute's name.
int	parseBorderAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Parses the border value from the given attribute.
Color	parseColorAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Parses the color value from the given attribute.
float	parseDimensionAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Parses a dimension value from the given string.
double	parseDoubleAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Parses a double value from the given string.
float	parseFloatAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Parses a float value from the given string.
int	parseHorizontalAlignmentAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Parses the horizontal alignment value from the given attribute.
int	parseIntAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Parses an integer value from the given string.
String	parseTextAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate, boolean translateEscapeSequences) Gets the value for the given attribute's name.
int	parseVerticalAlignmentAttribute(Locator locator, String attrName, Object attrValue, boolean evaluate) Parses the vertical alignment value from the given attribute.
protected void	processEscapeSequences(Locator locator, String attrName, String contents, StringBuffer buffer, boolean trimHead) Processes the escape sequences from the given content string and writes the result into the given buffer.
void	setDocumentHandler(DocumentHandler documentHandler) Sets the document handler.
Object	typeCastAttributeValue(Locator locator, AttributeDefinition attrDef, String attrName, Object value) Casts the given object value into a the correct type for the specified attribute definition.

Methods inherited from class java.lang.Object

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

Field Detail

floatHandler

public TypedAttributeHandler floatHandler

The integer attribute handler.

dimensionHandler

public TypedAttributeHandler dimensionHandler

The integer attribute handler.

doubleHandler

public TypedAttributeHandler doubleHandler

The double attribute handler.

booleanHandler

public TypedAttributeHandler booleanHandler

The boolean attribute handler.

colorHandler

public TypedAttributeHandler colorHandler

The color attribute handler.

borderHandler

public TypedAttributeHandler borderHandler

The boolean attribute handler.

horizontalAlignmentHandler

public TypedAttributeHandler horizontalAlignmentHandler

The horizontal alignment attribute handler.

verticalAlignmentHandler

public TypedAttributeHandler verticalAlignmentHandler

The vertical alignment attribute handler.

Constructor Detail

DefaultAttributeHandler

public DefaultAttributeHandler()

Constructs a DefaultAttributeHandler instance with no specific attributes.

Method Detail

setDocumentHandler

public void setDocumentHandler(DocumentHandler documentHandler)

Sets the document handler.

Specified by:

setDocumentHandler in interface AttributeHandler

Parameters:

documentHandler - The document handler to set.

typeCastAttributeValue

public Object typeCastAttributeValue(Locator locator,
                                     AttributeDefinition attrDef,
                                     String attrName,
                                     Object value)
                              throws DocumentHandlerException

Casts the given object value into a the correct type for the specified attribute definition.

Specified by:

typeCastAttributeValue in interface AttributeHandler

Parameters:

locator - The source locator.

attrDef - The attribute definition.

attrName - The attribute name.

value - The value to convert.

Returns:

The converted value.

Throws:

DocumentHandlerException - In case the type conversion failed.

parseTextAttribute

public String parseTextAttribute(Locator locator,
                                 String attrName,
                                 Object attrValue,
                                 boolean evaluate,
                                 boolean translateEscapeSequences)
                          throws TagAttributeException

Gets the value for the given attribute's name. Works like method getStringAttribute(java.lang.String, java.lang.String, boolean) but takes care of escape sequences.

Specified by:

parseTextAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The attribute's name.

attrValue - The argument value.

evaluate - If this flag is set to true, the attribute will get evaluated.

translateEscapeSequences - Tells whether or not to translate escape sequences.

Returns:

The determined value.

Throws:

TagAttributeException - if the item contains an invalid value or an required attribute was not defined.

parseIntAttribute

public int parseIntAttribute(Locator locator,
                             String attrName,
                             Object attrValue,
                             boolean evaluate)
                      throws TagAttributeException

Parses an integer value from the given string.

Specified by:

parseIntAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The attribute's name.

attrValue - The argument value.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The determined value.

Throws:

TagAttributeException - Thrown in case the item contained an invalid value.

parseFloatAttribute

public float parseFloatAttribute(Locator locator,
                                 String attrName,
                                 Object attrValue,
                                 boolean evaluate)
                          throws TagAttributeException

Parses a float value from the given string.

Specified by:

parseFloatAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The attribute's name.

attrValue - The argument value.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The determined value.

Throws:

TagAttributeException - Thrown in case the item contained an invalid value.

parseDimensionAttribute

public float parseDimensionAttribute(Locator locator,
                                     String attrName,
                                     Object attrValue,
                                     boolean evaluate)
                              throws TagAttributeException

Parses a dimension value from the given string.

Specified by:

parseDimensionAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The attribute's name.

attrValue - The argument value.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The determined value.

Throws:

TagAttributeException - Thrown in case the item contained an invalid value.

parseDoubleAttribute

public double parseDoubleAttribute(Locator locator,
                                   String attrName,
                                   Object attrValue,
                                   boolean evaluate)
                            throws TagAttributeException

Parses a double value from the given string.

Specified by:

parseDoubleAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The attribute's name.

attrValue - The argument value.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The determined value.

Throws:

TagAttributeException - Thrown in case the item contained an invalid value.

parseBooleanAttribute

public boolean parseBooleanAttribute(Locator locator,
                                     String attrName,
                                     Object attrValue,
                                     boolean evaluate)
                              throws TagAttributeException

Gets the boolean value for the given attribute's name.

Specified by:

parseBooleanAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The attribute's name.

attrValue - The argument value.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The determined value.

Throws:

TagAttributeException - if the item contains an invalid value or an required attribute was not defined.

parseColorAttribute

public Color parseColorAttribute(Locator locator,
                                 String attrName,
                                 Object attrValue,
                                 boolean evaluate)
                          throws TagAttributeException

Parses the color value from the given attribute.

Specified by:

parseColorAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The name of the attribute to parse.

attrValue - The attribute value to parse.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The resulting border style.

Throws:

TagAttributeException - Thrown in case the item contained an invalid value.

parseBorderAttribute

public int parseBorderAttribute(Locator locator,
                                String attrName,
                                Object attrValue,
                                boolean evaluate)
                         throws TagAttributeException

Parses the border value from the given attribute.

Specified by:

parseBorderAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The name of the attribute to parse.

attrValue - The attribute value to parse.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The resulting border style.

Throws:

TagAttributeException - Thrown in case the item contained an invalid value.

parseHorizontalAlignmentAttribute

public int parseHorizontalAlignmentAttribute(Locator locator,
                                             String attrName,
                                             Object attrValue,
                                             boolean evaluate)
                                      throws TagAttributeException

Parses the horizontal alignment value from the given attribute.

Specified by:

parseHorizontalAlignmentAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The name of the attribute to parse.

attrValue - The attribute value to parse.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The resulting horizontal alignment.

Throws:

TagAttributeException - Thrown in case the item contained an invalid value.

parseVerticalAlignmentAttribute

public int parseVerticalAlignmentAttribute(Locator locator,
                                           String attrName,
                                           Object attrValue,
                                           boolean evaluate)
                                    throws TagAttributeException

Parses the vertical alignment value from the given attribute.

Specified by:

parseVerticalAlignmentAttribute in interface AttributeHandler

Parameters:

locator - The tag source locator.

attrName - The name of the attribute to parse.

attrValue - The attribute value to parse.

evaluate - If this flag is set to true, the attribute will get evaluated.

Returns:

The resulting vertical alignment.

Throws:

TagAttributeException - Thrown in case the item contained an invalid value.

processEscapeSequences

protected void processEscapeSequences(Locator locator,
                                      String attrName,
                                      String contents,
                                      StringBuffer buffer,
                                      boolean trimHead)
                               throws DocumentHandlerException

Processes the escape sequences from the given content string and writes the result into the given buffer.

Parameters:

locator - The tag source locator.

attrName - The attribute name.

contents - The contents to parse for escape sequences

buffer - The buffer to write to.

trimHead - Tells whether or not to trim the leading white spaces

Throws:

DocumentHandlerException

getTextHandler

public TypedAttributeHandler getTextHandler()

Gets the integer attribute handler.

Specified by:

getTextHandler in interface AttributeHandler

Returns:

The integer attribute handler

getEscapeSequenceTextHandler

public TypedAttributeHandler getEscapeSequenceTextHandler()

Gets the integer attribute handler.

Specified by:

getEscapeSequenceTextHandler in interface AttributeHandler

Returns:

The integer attribute handler

getIntegerHandler

public TypedAttributeHandler getIntegerHandler()

Gets the integer attribute handler.

Specified by:

getIntegerHandler in interface AttributeHandler

Returns:

The integer attribute handler

getFloatHandler

public TypedAttributeHandler getFloatHandler()

Gets the float attribute handler.

Specified by:

getFloatHandler in interface AttributeHandler

Returns:

The integer attribute handler

getDimensionHandler

public TypedAttributeHandler getDimensionHandler()

Gets the dimension attribute handler.

Specified by:

getDimensionHandler in interface AttributeHandler

Returns:

The integer attribute handler

getDoubleHandler

public TypedAttributeHandler getDoubleHandler()

Gets the double attribute handler.

Specified by:

getDoubleHandler in interface AttributeHandler

Returns:

The double attribute handler

getBooleanHandler

public TypedAttributeHandler getBooleanHandler()

Gets the boolean attribute handler.

Specified by:

getBooleanHandler in interface AttributeHandler

Returns:

The boolean attribute handler

getColorHandler

public TypedAttributeHandler getColorHandler()

Gets the color attribute handler.

Specified by:

getColorHandler in interface AttributeHandler

Returns:

The color attribute handler

getBorderHandler

public TypedAttributeHandler getBorderHandler()

Gets the boolean attribute handler.

Specified by:

getBorderHandler in interface AttributeHandler

Returns:

The boolean attribute handler

getHorizontalAlignmentHandler

public TypedAttributeHandler getHorizontalAlignmentHandler()

Gets the horizontal alignment attribute handler.

Specified by:

getHorizontalAlignmentHandler in interface AttributeHandler

Returns:

The horizontal alignment attribute handler

getVerticalAlignmentHandler

public TypedAttributeHandler getVerticalAlignmentHandler()

Gets the vertical alignment attribute handler.

Specified by:

getVerticalAlignmentHandler in interface AttributeHandler

Returns:

The vertical alignment attribute handler