org.w3c.dom.css
Interface CSSPrimitiveValue

All Superinterfaces:

CSSValue

public interface CSSPrimitiveValue
extends CSSValue

The CSSPrimitiveValue interface represents a single CSS value . This interface may be used to determine the value of a specific style property currently set in a block or to set a specific style property explicitly within the block. An instance of this interface might be obtained from the getPropertyCSSValue method of the CSSStyleDeclaration interface. A CSSPrimitiveValue object only occurs in a context of a CSS property.

Conversions are allowed between absolute values (from millimeters to centimeters, from degrees to radians, and so on) but not between relative values. (For example, a pixel value cannot be converted to a centimeter value.) Percentage values can't be converted since they are relative to the parent value (or another property value). There is one exception for color percentage values: since a color percentage value is relative to the range 0-255, a color percentage value can be converted to a number; (see also the RGBColor interface).

See also the Document Object Model (DOM) Level 2 Style Specification.

Since:

DOM Level 2

Field Summary

static short	CSS_ATTR The value is a attribute function.
static short	CSS_CM The value is a length (cm).
static short	CSS_COUNTER The value is a counter or counters function.
static short	CSS_DEG The value is an angle (deg).
static short	CSS_DIMENSION The value is a number with an unknown dimension.
static short	CSS_EMS The value is a length (ems).
static short	CSS_EXS The value is a length (exs).
static short	CSS_GRAD The value is an angle (grad).
static short	CSS_HZ The value is a frequency (Hz).
static short	CSS_IDENT The value is an identifier.
static short	CSS_IN The value is a length (in).
static short	CSS_KHZ The value is a frequency (kHz).
static short	CSS_MM The value is a length (mm).
static short	CSS_MS The value is a time (ms).
static short	CSS_NUMBER The value is a simple number.
static short	CSS_PC The value is a length (pc).
static short	CSS_PERCENTAGE The value is a percentage.
static short	CSS_PT The value is a length (pt).
static short	CSS_PX The value is a length (px).
static short	CSS_RAD The value is an angle (rad).
static short	CSS_RECT The value is a rect function.
static short	CSS_RGBCOLOR The value is a RGB color.
static short	CSS_S The value is a time (s).
static short	CSS_STRING The value is a STRING.
static short	CSS_UNKNOWN The value is not a recognized CSS2 value.
static short	CSS_URI The value is a URI.

Fields inherited from interface org.w3c.dom.css.CSSValue

CSS_CUSTOM, CSS_INHERIT, CSS_PRIMITIVE_VALUE, CSS_VALUE_LIST

Method Summary

Counter	getCounterValue() This method is used to get the Counter value.
float	getFloatValue(short unitType) This method is used to get a float value in a specified unit.
short	getPrimitiveType() The type of the value as defined by the constants specified above.
Rect	getRectValue() This method is used to get the Rect value.
RGBColor	getRGBColorValue() This method is used to get the RGB color.
String	getStringValue() This method is used to get the string value.
void	setFloatValue(short unitType, float floatValue) A method to set the float value with a specified unit.
void	setStringValue(short stringType, String stringValue) A method to set the string value with the specified unit.

Methods inherited from interface org.w3c.dom.css.CSSValue

getCssText, getCssValueType, setCssText

Field Detail

CSS_UNKNOWN

static final short CSS_UNKNOWN

The value is not a recognized CSS2 value. The value can only be obtained by using the cssText attribute.

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Constant Field Values

CSS_NUMBER

static final short CSS_NUMBER

The value is a simple number. The value can be obtained by using the getFloatValue method.

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CSS_PERCENTAGE

static final short CSS_PERCENTAGE

The value is a percentage. The value can be obtained by using the getFloatValue method.

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CSS_EMS

static final short CSS_EMS

The value is a length (ems). The value can be obtained by using the getFloatValue method.

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CSS_EXS

static final short CSS_EXS

The value is a length (exs). The value can be obtained by using the getFloatValue method.

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CSS_PX

static final short CSS_PX

The value is a length (px). The value can be obtained by using the getFloatValue method.

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CSS_CM

static final short CSS_CM

The value is a length (cm). The value can be obtained by using the getFloatValue method.

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CSS_MM

static final short CSS_MM

The value is a length (mm). The value can be obtained by using the getFloatValue method.

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CSS_IN

static final short CSS_IN

The value is a length (in). The value can be obtained by using the getFloatValue method.

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CSS_PT

static final short CSS_PT

The value is a length (pt). The value can be obtained by using the getFloatValue method.

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CSS_PC

static final short CSS_PC

The value is a length (pc). The value can be obtained by using the getFloatValue method.

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CSS_DEG

static final short CSS_DEG

The value is an angle (deg). The value can be obtained by using the getFloatValue method.

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CSS_RAD

static final short CSS_RAD

The value is an angle (rad). The value can be obtained by using the getFloatValue method.

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CSS_GRAD

static final short CSS_GRAD

The value is an angle (grad). The value can be obtained by using the getFloatValue method.

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CSS_MS

static final short CSS_MS

The value is a time (ms). The value can be obtained by using the getFloatValue method.

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CSS_S

static final short CSS_S

The value is a time (s). The value can be obtained by using the getFloatValue method.

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CSS_HZ

static final short CSS_HZ

The value is a frequency (Hz). The value can be obtained by using the getFloatValue method.

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CSS_KHZ

static final short CSS_KHZ

The value is a frequency (kHz). The value can be obtained by using the getFloatValue method.

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CSS_DIMENSION

static final short CSS_DIMENSION

The value is a number with an unknown dimension. The value can be obtained by using the getFloatValue method.

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CSS_STRING

static final short CSS_STRING

The value is a STRING. The value can be obtained by using the getStringValue method.

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CSS_URI

static final short CSS_URI

The value is a URI. The value can be obtained by using the getStringValue method.

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CSS_IDENT

static final short CSS_IDENT

The value is an identifier. The value can be obtained by using the getStringValue method.

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CSS_ATTR

static final short CSS_ATTR

The value is a attribute function. The value can be obtained by using the getStringValue method.

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CSS_COUNTER

static final short CSS_COUNTER

The value is a counter or counters function. The value can be obtained by using the getCounterValue method.

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CSS_RECT

static final short CSS_RECT

The value is a rect function. The value can be obtained by using the getRectValue method.

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CSS_RGBCOLOR

static final short CSS_RGBCOLOR

The value is a RGB color. The value can be obtained by using the getRGBColorValue method.

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Constant Field Values

Method Detail

getPrimitiveType

short getPrimitiveType()

The type of the value as defined by the constants specified above.

setFloatValue

void setFloatValue(short unitType,
                   float floatValue)
                   throws DOMException

A method to set the float value with a specified unit. If the property attached with this value can not accept the specified unit or the float value, the value will be unchanged and a DOMException will be raised.

Parameters:

unitType - A unit code as defined above. The unit code can only be a float unit type (i.e. CSS_NUMBER, CSS_PERCENTAGE, CSS_EMS, CSS_EXS, CSS_PX, CSS_CM, CSS_MM, CSS_IN, CSS_PT, CSS_PC, CSS_DEG, CSS_RAD, CSS_GRAD, CSS_MS, CSS_S, CSS_HZ, CSS_KHZ, CSS_DIMENSION).

floatValue - The new float value.

Throws:

DOMException - INVALID_ACCESS_ERR: Raised if the attached property doesn't support the float value or the unit type.
NO_MODIFICATION_ALLOWED_ERR: Raised if this property is readonly.

getFloatValue

float getFloatValue(short unitType)
                    throws DOMException

This method is used to get a float value in a specified unit. If this CSS value doesn't contain a float value or can't be converted into the specified unit, a DOMException is raised.

Parameters:

unitType - A unit code to get the float value. The unit code can only be a float unit type (i.e. CSS_NUMBER, CSS_PERCENTAGE, CSS_EMS, CSS_EXS, CSS_PX, CSS_CM, CSS_MM, CSS_IN, CSS_PT, CSS_PC, CSS_DEG, CSS_RAD, CSS_GRAD, CSS_MS, CSS_S, CSS_HZ, CSS_KHZ, CSS_DIMENSION).

Returns:

The float value in the specified unit.

Throws:

DOMException - INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a float value or if the float value can't be converted into the specified unit.

setStringValue

void setStringValue(short stringType,
                    String stringValue)
                    throws DOMException

A method to set the string value with the specified unit. If the property attached to this value can't accept the specified unit or the string value, the value will be unchanged and a DOMException will be raised.

Parameters:

stringType - A string code as defined above. The string code can only be a string unit type (i.e. CSS_STRING, CSS_URI, CSS_IDENT, and CSS_ATTR).

stringValue - The new string value.

Throws:

DOMException - INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a string value or if the string value can't be converted into the specified unit.
NO_MODIFICATION_ALLOWED_ERR: Raised if this property is readonly.

getStringValue

String getStringValue()
                      throws DOMException

This method is used to get the string value. If the CSS value doesn't contain a string value, a DOMException is raised. Some properties (like 'font-family' or 'voice-family') convert a whitespace separated list of idents to a string.

Returns:

The string value in the current unit. The current primitiveType can only be a string unit type (i.e. CSS_STRING, CSS_URI, CSS_IDENT and CSS_ATTR).

Throws:

DOMException - INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a string value.

getCounterValue

Counter getCounterValue()
                        throws DOMException

This method is used to get the Counter value. If this CSS value doesn't contain a counter value, a DOMException is raised. Modification to the corresponding style property can be achieved using the Counter interface.

Returns:

The Counter value.

Throws:

DOMException - INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a Counter value (e.g. this is not CSS_COUNTER).

getRectValue

Rect getRectValue()
                  throws DOMException

This method is used to get the Rect value. If this CSS value doesn't contain a rect value, a DOMException is raised. Modification to the corresponding style property can be achieved using the Rect interface.

Returns:

The Rect value.

Throws:

DOMException - INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a Rect value. (e.g. this is not CSS_RECT).

getRGBColorValue

RGBColor getRGBColorValue()
                          throws DOMException

This method is used to get the RGB color. If this CSS value doesn't contain a RGB color value, a DOMException is raised. Modification to the corresponding style property can be achieved using the RGBColor interface.

Returns:

the RGB color value.

Throws:

DOMException - INVALID_ACCESS_ERR: Raised if the attached property can't return a RGB color value (e.g. this is not CSS_RGBCOLOR).