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Class jclass.bwt.JCTextField

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----jclass.bwt.JCComponent
                           |
                           +----jclass.bwt.JCTextComponent
                                   |
                                   +----jclass.bwt.JCTextField

public class JCTextField

extends JCTextComponent

Properties

Name	Method
Alignment	setAlignment
Background	setBackground
CaretPosition	setCaretPosition
Changed	setChanged
Columns	setColumns
CursorPosition	setCursorPosition
DoubleBuffer	setDoubleBuffer
EchoChar	setEchoChar
Editable	setEditable
Font	setFont
Foreground	setForeground
HighlightColor	setHighlightColor
HighlightThickness	setHighlightThickness
Insets	setInsets
MaximumLength	setMaximumLength
Overstrike	setOverstrike
PreferredSize	setPreferredSize
SelectedBackground	setSelectedBackground
SelectedForeground	setSelectedForeground
SelectionEnd	setSelectionEnd
SelectionList	setSelectionList
SelectionStart	setSelectionStart
ShadowThickness	setShadowThickness
ShowCursorPosition	setShowCursorPosition
StringCase	setStringCase
Text	setText
Traversable	setTraversable
UserData	setUserData

Events

Class	Listener	Description
JCActionEvent	addActionListener	Posted when the ENTER key is hit
JCTextCursorEvent	addTextCursorListener	Posted when the cursor is moved
JCTextEvent	addTextListener	Posted when the value changes

actionListeners

List of JCActionEvent listeners.

JCTextField()

Creates an empty, editable field with 20 columns.

JCTextField(String)

Creates an editable field with the specified text and 20 columns.

JCTextField(String, Applet, String)

Creates a text field which reads parameters from the applet's HTML file.

JCTextField(String, int)

Creates an editable field with the specified text and number of columns.

addActionListener(JCActionListener)

Adds the specified action listener to receive action events.

echoCharIsSet()

Returns true if a character has been set for echoing.

getActionCommand()

Returns the command name of the action event fired by this field.

getEchoChar()

Returns the character to be used for echoing, or 0 if no char has been set.

getEchoCharString()

Returns a string whose first char is set to the char to be used for echoing, or null if no echo char has been set.

getMinimumSize(int)

Returns the minimum size needed for the specified number of columns.

getOutputText()

Gets the text which will be displayed.

getParameters()

Reads the parameter values from the HTML page using the component's applet.

keyDown(Event, int)

Processes keyDown events.

paintComponent(Graphics)

Paints the text.

pointToPosition(int, int)

Converts an x coordinate into a text position.

positionToX(int)

Gets the x co-ordinate for a character position, ignoring scrolling.

postActionEvent(Event)

Posts an JCActionEvent.

removeActionListener(JCActionListener)

Removes the specified action listener so it no longer receives action events.

setActionCommand(String)

Sets the command name of the action event fired by this field.

setEchoChar(char)

Sets the echo character.

setEchoCharString(String)

Sets the echo character.

showPosition(int)

Scrolls the text if necessary to ensure that the position is visible.

 protected JCVector actionListeners

List of JCActionEvent listeners.

 public JCTextField()

Creates an empty, editable field with 20 columns.

 public JCTextField(String text)

Creates an editable field with the specified text and 20 columns.

 public JCTextField(String text,
                    int cols)

Creates an editable field with the specified text and number of columns.

 public JCTextField(String text,
                    Applet applet,
                    String name)

Creates a text field which reads parameters from the applet's HTML file.

Parameters:

applet - the applet whose PARAM tags are to be read

name - if this is not null, only parameters preceded by this name are read

See Also:

getParameter, JCString

 protected void getParameters()

Reads the parameter values from the HTML page using the component's applet. The values will override those previously set.

Overrides:

getParameters in class JCTextComponent

 public char getEchoChar()

Returns the character to be used for echoing, or 0 if no char has been set.

See Also:

setEchoChar

 public void setEchoChar(char c)

Sets the echo character. This is useful for fields where the user input shouldn't be echoed to the screen, as in the case of a password.

Parameters:

c - the echo character, or 0 if the echo char is not to be set

 public String getEchoCharString()

Returns a string whose first char is set to the char to be used for echoing, or null if no echo char has been set.

See Also:

setEchoChar

 public void setEchoCharString(String s)

Sets the echo character.

Parameters:

s - the echo string (only the first character is used), or null if the echo char is not to be set

 public boolean echoCharIsSet()

Returns true if a character has been set for echoing.

See Also:

setEchoChar, getEchoChar

 protected String getOutputText()

Gets the text which will be displayed.

See Also:

setEchoChar

 public int positionToX(int pos)

Gets the x co-ordinate for a character position, ignoring scrolling.

Overrides:

positionToX in class JCTextComponent

 public void showPosition(int pos)

Scrolls the text if necessary to ensure that the position is visible.

Parameters:

pos - the number of characters from the beginning of the text buffer.

Overrides:

showPosition in class JCTextComponent

 public void setActionCommand(String command)

Sets the command name of the action event fired by this field. By default this will be a 0-length string.

 public String getActionCommand()

Returns the command name of the action event fired by this field.

See Also:

setActionCommand

 public void addActionListener(JCActionListener l)

Adds the specified action listener to receive action events.

See Also:

JCActionEvent

 public void removeActionListener(JCActionListener l)

Removes the specified action listener so it no longer receives action events.

See Also:

addActionListener

 public Dimension getMinimumSize(int columns)

Returns the minimum size needed for the specified number of columns.

Overrides:

getMinimumSize in class JCTextComponent

 protected void paintComponent(Graphics gc)

Paints the text.

Overrides:

paintComponent in class JCComponent

 public int pointToPosition(int x,
                            int y)

Converts an x coordinate into a text position. The y value is ignored.

Overrides:

pointToPosition in class JCTextComponent

 protected void postActionEvent(Event ev)

Posts an JCActionEvent.

See Also:

addActionListener, JCActionEvent

 public boolean keyDown(Event ev,
                        int key)

Processes keyDown events.

CTRL/A		scrollHome
CTRL/D		deleteCurrentChar
CTRL/E		scrollEnd
CTRL/O		toggleOverstrike
CTRL/C      copyToClipboard
CTRL/X      cutToClipboard
CTRL/V      pasteFromClipboard
HOME        scrollHome
END         scrollEnd
RIGHT		moveForwardChar
LEFT		moveBackwardChar
BS			deletePreviousChar
DELETE		deleteCurrentChar
ENTER		postActionEvent
any other	insertChar

Overrides:

keyDown in class JCTextComponent

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