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java.lang.Object
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+--javax.microedition.lcdui.Displayable
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+--javax.microedition.lcdui.Screen
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+--javax.microedition.lcdui.TextBox
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+--net.rim.device.api.lcdui.BlackBerryTextBox
The BlackBerryTextBox class extends the functionality of the TextBox class.
The BlackBerryTextBox class implements Controllable and can be queried
to retrieve BlackBerry-specific Controls. For instance, on devices which support a virtual keyboard,
getControl(String) may return a VirtualKeyboardControl
object.
| Constructor Summary | ||
BlackBerryTextBox(String title,
String text,
int maxSize,
int constraints)
Creates a new instance of a BlackBerryTextBox. |
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| Method Summary | ||
Control |
getControl(String controlType)
Obtain the object that implements the specified Control interface. |
|
Control[] |
getControls()
Obtain the collection of Controls
from the object that implements this interface. |
|
| Methods inherited from class javax.microedition.lcdui.TextBox |
delete, getCaretPosition, getChars, getConstraints, getMaxSize, getString, insert, insert, setChars, setConstraints, setInitialInputMode, setMaxSize, setString, size |
| Methods inherited from class javax.microedition.lcdui.Displayable |
addCommand, getHeight, getTicker, getTitle, getWidth, isShown, removeCommand, setCommandListener, setTicker, setTitle, sizeChanged |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public BlackBerryTextBox(String title, String text, int maxSize, int constraints)
IllegalArgumentException - if maxSize is zero or lessIllegalArgumentException - if the constraints parameter
is invalidIllegalArgumentException - if text is illegal
for the specified constraintsIllegalArgumentException - if the length of the string exceeds
the requested maximum capacity
or the maximum capacity actually assignedjavax.microedtion.lcdui.BlackBerryTextBox(String, String, int, int)| Method Detail |
public Control getControl(String controlType)
ControllableControl interface.
If the specified Control interface is not supported
then null is returned.
If the Controllable supports multiple objects that
implement the same specified Control interface, only
one of them will be returned. To obtain all the
Control's of that type, use the getControls
method and check the list for the requested type.
IllegalArgumentException - Thrown if controlType
is null.javax.microedition.media.Controllable.getControl(String)public Control[] getControls()
ControllableControls
from the object that implements this interface.
Since a single object can implement multiple
Control interfaces, it's necessary
to check each object against different Control
types. For example:
Controllable controllable;
:
Control cs[];
cs = controllable.getControls();
for (int i = 0; i < cs.length; i++) {
if (cs[i] instanceof ControlTypeA)
doSomethingA();
if (cs[i] instanceof ControlTypeB)
doSomethingB();
// etc.
}
The list of Control objects returned
will not contain any duplicates. And the list will not
change over time.
If no Control is supported, a zero length
array is returned.
javax.microedition.media.Controllable.getControls()
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