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javax.ide.editor
Class TextEditor

java.lang.Object
javax.ide.view.DefaultViewable
javax.ide.view.View
javax.ide.editor.Editor
javax.ide.editor.TextEditor

All Implemented Interfaces:

Identifiable, Viewable

public abstract class TextEditor

extends Editor

Base class for text based editors. Provides utilities for querying and changing the caret position and selection.

Field Summary

Fields inherited from interface javax.ide.view.Viewable

PROP_ICON_PATH, PROP_LABEL, PROP_VISIBLE

Constructor Summary

TextEditor()

Method Summary

abstract int	getCaretColumn() Get the current column position of the caret.
abstract int	getCaretLine() Get the current line position of the caret.
abstract int	getCaretPosition() Get the current caret position as a character offset from the start of the document.
abstract int	getSelectionLength() Get the length of the current selection in characters.
abstract int	getSelectionStart() Get the character offset of the start of the current selection.
abstract void	setCaretPosition(int position) Set the caret position.
abstract void	setCaretPosition(int line, int column) Set the caret position using a line and column number.
abstract void	setSelection(int start, int length) Set the current selection.

Methods inherited from class javax.ide.editor.Editor

close, getContext, getLabel, open, restore, save

Methods inherited from class javax.ide.view.View

activate, deactivate, getController, getGUI, isVisible, parent, setVisible

Methods inherited from class javax.ide.view.DefaultViewable

addPropertyChangeListener, firePropertyChange, getIcon, getToolTip, removePropertyChangeListener, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface javax.ide.Identifiable

getID

Constructor Detail

TextEditor

public TextEditor()

Method Detail

getCaretPosition

public abstract int getCaretPosition()

Get the current caret position as a character offset from the start of the document.

Returns:

the position of the caret as an offset from the start of the document.

setCaretPosition

public abstract void setCaretPosition(int position)

Set the caret position. Any current selection will be cleared. If possible, the editor is scrolled so that the caret is in view.

Parameters:

position - the character offset from the start of the document at which to position the caret.

Throws:

java.lang.IndexOutOfBoundsException - if the specified position is invalid.

setCaretPosition

public abstract void setCaretPosition(int line,
                                      int column)

Set the caret position using a line and column number. Any current selection will be cleared. If possible, the editor is scrolled so that the caret is in view.

Parameters:

line - the line number on which to position the caret. The first line in the document is 0.

column - the column number at which to position the caret. The first column in the document is 0.

Throws:

java.lang.IndexOutOfBoundsException - if the specified position is invalid.

getCaretColumn

public abstract int getCaretColumn()

Get the current column position of the caret.

Returns:

the column position of the caret. If the caret is in the first column of the document, the return value will be 0.

getCaretLine

public abstract int getCaretLine()

Get the current line position of the caret.

Returns:

the line position of the caret. This is zero-based; if the caret is on the first line in the document, the return value will be 0 not 1.

getSelectionStart

public abstract int getSelectionStart()

Get the character offset of the start of the current selection. If there is no current selection, this returns the same value as getCaretPosition().

Returns:

the character offset of the start of the current selection.

getSelectionLength

public abstract int getSelectionLength()

Get the length of the current selection in characters. If there is no current selection, this returns 0.

Returns:

the number of characters currently selected.

setSelection

public abstract void setSelection(int start,
                                  int length)

Set the current selection. If possible, the selection is scrolled into view.

Parameters:

start - the start offset of the selection. This must be greater than 0 and less than the length of the document-1.

length - the length of the selection. This must not cause the selection to extend past the end of the document.

Throws:

java.lang.IndexOutOfBoundsException - if the specified selection position is invalid.

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