Common DOM API

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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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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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).

Common DOM API

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