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Class org.w3c.css.properties.CssVerticalAlign

java.lang.Object
   |
   +----org.w3c.css.properties.CssProperty
           |
           +----org.w3c.css.properties.CssVerticalAlign

public class CssVerticalAlign
extends CssProperty
implements CssTextPropertiesConstants

   'vertical-align'

Value: baseline | sub | super | top | text-top | middle | bottom | text-bottom | <percentage>
Initial: baseline
Applies to: inline elements
Inherited: no
Percentage values: refer to the 'line-height' of the element itself

The property affects the vertical positioning of the element. One set of keywords is relative to the parent element:

'baseline'
align the baseline of the element (or the bottom, if the element doesn't have a baseline) with the baseline of the parent
'middle'
align the vertical midpoint of the element (typically an image) with the baseline plus half the x-height of the parent
'sub'
subscript the element
'super'
superscript the element
'text-top'
align the top of the element with the top of the parent element's font
'text-bottom'
align the bottom of the element with the bottom of the parent element's font

Another set of properties are relative to the formatted line that the element is a part of:

'top'
align the top of the element with the tallest element on the line
'bottom'
align the bottom of the element with the lowest element on the line

Using the 'top' and 'bottom' alignment, unsolvable situations can occur where element dependencies form a loop.

Percentage values refer to the value of the 'line-height' property of the element itself. They raise the baseline of the element (or the bottom, if it has no baseline) the specified amount above the baseline of the parent. Negative values are possible. E.g., a value of '-100%' will lower the element so that the baseline of the element ends up where the baseline of the next line should have been. This allows precise control over the vertical position of elements (such as images that are used in place of letters) that don't have a baseline.

It is expected that a future version of CSS will allow <length&t; as a value on this property.


Constructor Index

 o CssVerticalAlign()
Create a new CssVerticalAlign
 o CssVerticalAlign(CssExpression)
Create a new CssVerticalAlign

Method Index

 o addToStyle(CssStyle)
Add this property to the CssStyle.
 o equals(CssProperty)
Compares two properties for equality.
 o get()
Returns the value of this property
 o getPropertyInStyle(CssStyle, boolean)
Get this property in the style.
 o getPropertyName()
Returns the name of this property
 o isDefault()
Is the value of this property is a default value.
 o toString()
Returns a string representation of the object.

Constructors

 o CssVerticalAlign
 public CssVerticalAlign()
Create a new CssVerticalAlign

 o CssVerticalAlign
 public CssVerticalAlign(CssExpression expression) throws InvalidParamException
Create a new CssVerticalAlign

Parameters:
expression - The expression for this property
Throws: InvalidParamException
Values are incorrect

Methods

 o get
 public Object get()
Returns the value of this property

Overrides:
get in class CssProperty
 o getPropertyName
 public String getPropertyName()
Returns the name of this property

Overrides:
getPropertyName in class CssProperty
 o toString
 public String toString()
Returns a string representation of the object.

Overrides:
toString in class CssProperty
 o addToStyle
 public void addToStyle(CssStyle style)
Add this property to the CssStyle.

Parameters:
style - The CssStyle
Overrides:
addToStyle in class CssProperty
 o getPropertyInStyle
 public CssProperty getPropertyInStyle(CssStyle style,
                                       boolean resolve)
Get this property in the style.

Parameters:
style - The style where the property is
resolve - if true, resolve the style to find this property
Overrides:
getPropertyInStyle in class CssProperty
 o equals
 public boolean equals(CssProperty property)
Compares two properties for equality.

Parameters:
value - The other property.
Overrides:
equals in class CssProperty
 o isDefault
 public boolean isDefault()
Is the value of this property is a default value. It is used by all macro for the function print

Overrides:
isDefault in class CssProperty

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