java.lang.Object java.awt.ComponentOrientation
public final class ComponentOrientation
The ComponentOrientation class encapsulates the language-sensitive orientation that is to be used to order the elements of a component or of text. It is used to reflect the differences in this ordering between Western alphabets, Middle Eastern (such as Hebrew), and Far Eastern (such as Japanese).
Fundamentally, this governs items (such as characters) which are laid out in lines, with the lines then laid out in a block. This also applies to items in a widget: for example, in a check box where the box is positioned relative to the text.
There are four different orientations used in modern languages as in the following table.
LT RT TL TR A B C C B A A D G G D A D E F F E D B E H H E B G H I I H G C F I I F C
The orientations are:
if (orientation == LEFT_TO_RIGHT) { ... } else if (orientation == RIGHT_TO_LEFT) { ... } else { // Oops }This is unsafe, since more constants may be added in the future and since it is not guaranteed that orientation objects will be unique.
Field Summary | |
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static ComponentOrientation |
LEFT_TO_RIGHT
Items run left to right and lines flow top to bottom Examples: English, French. |
static ComponentOrientation |
RIGHT_TO_LEFT
Items run right to left and lines flow top to bottom Examples: Arabic, Hebrew. |
static ComponentOrientation |
UNKNOWN
Indicates that a component's orientation has not been set. |
Method Summary | |
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static ComponentOrientation |
getOrientation
(
Locale
locale) Returns the orientation that is appropriate for the given locale. |
static ComponentOrientation |
getOrientation
(
ResourceBundle
bdl) Deprecated. As of J2SE 1.4, use getOrientation(java.util.Locale) . |
boolean |
isHorizontal
() Are lines horizontal? This will return true for horizontal, left-to-right writing systems such as Roman. |
boolean |
isLeftToRight
() HorizontalLines: Do items run left-to-right? Vertical Lines: Do lines run left-to-right? This will return true for horizontal, left-to-right writing systems such as Roman. |
Methods inherited from class java.lang. Object |
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clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait |
Field Detail |
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public static final ComponentOrientation LEFT_TO_RIGHT
public static final ComponentOrientation RIGHT_TO_LEFT
public static final ComponentOrientation UNKNOWN
Method Detail |
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public boolean isHorizontal()
public boolean isLeftToRight()
public static ComponentOrientation getOrientation(Locale locale)
@Deprecated public static ComponentOrientationgetOrientation(ResourceBundle bdl)