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Eclipse Platform
Release 3.5

org.eclipse.ui.texteditor
Class AbstractTextEditor.LineStartAction

java.lang.Object
  extended by 

org.eclipse.core.commands.common.EventManager
      extended by 

org.eclipse.jface.action.AbstractAction
          extended by 

org.eclipse.jface.action.Action
              extended by 

org.eclipse.ui.texteditor.TextNavigationAction
                  extended by 
org.eclipse.ui.texteditor.AbstractTextEditor.LineStartAction
All Implemented Interfaces:
IAction
Enclosing class:
AbstractTextEditor

protected class AbstractTextEditor.LineStartAction
extends TextNavigationAction

This action implements smart home. Instead of going to the start of a line it does the following: - if smart home/end is enabled and the caret is after the line's first non-whitespace then the caret is moved directly before it - if the caret is before the line's first non-whitespace the caret is moved to the beginning of the line - if the caret is at the beginning of the line the caret is moved directly before the line's first non-whitespace character

Since:
2.1

Field Summary
 
Fields inherited from interface org.eclipse.jface.action. IAction
AS_CHECK_BOX, AS_DROP_DOWN_MENU, AS_PUSH_BUTTON, AS_RADIO_BUTTON, AS_UNSPECIFIED, CHECKED, DESCRIPTION, ENABLED, HANDLED, IMAGE, RESULT, TEXT, TOOL_TIP_TEXT
 
Constructor Summary
AbstractTextEditor.LineStartAction ( StyledText textWidget, boolean doSelect)
          Creates a new line start action.
 
Method Summary
protected  int getLineStartPosition ( IDocument document, String line, int length, int offset)
          Computes the offset of the line start position.
 void run ()
          The default implementation of this IAction method does nothing.
 
Methods inherited from class org.eclipse.ui.texteditor. TextNavigationAction
addPropertyChangeListener, fireSelectionChanged, fireSelectionChanged, getAccelerator, getDescription, getDisabledImageDescriptor, getHelpListener, getHoverImageDescriptor, getImageDescriptor, getMenuCreator, getStyle, getText, getTextWidget, getToolTipText, isChecked, isEnabled, removePropertyChangeListener, runWithEvent, setAccelerator, setChecked, setDescription, setDisabledImageDescriptor, setEnabled, setHelpListener, setHoverImageDescriptor, setImageDescriptor, setMenuCreator, setText, setToolTipText
 
Methods inherited from class org.eclipse.jface.action. Action
convertAccelerator, convertAccelerator, findKeyCode, findKeyString, findModifier, findModifierString, getActionDefinitionId, getId, isHandled, notifyResult, removeAcceleratorText, removeMnemonics, setActionDefinitionId, setId
 
Methods inherited from class org.eclipse.jface.action. AbstractAction
firePropertyChange, firePropertyChange
 
Methods inherited from class org.eclipse.core.commands.common. EventManager
addListenerObject, clearListeners, getListeners, isListenerAttached, removeListenerObject
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AbstractTextEditor.LineStartAction

public AbstractTextEditor.LineStartAction(
StyledText textWidget,
                                          boolean doSelect)
Creates a new line start action.

Parameters:
textWidget - the styled text widget
doSelect - a boolean flag which tells if the text up to the beginning of the line should be selected
Method Detail

getLineStartPosition

protected int getLineStartPosition(
IDocument document,
                                   
String line,
                                   int length,
                                   int offset)
Computes the offset of the line start position.

Parameters:
document - the document where to compute the line start position
line - the line to determine the start position of
length - the length of the line
offset - the caret position in the document
Returns:
the offset of the line start
Since:
3.0

run

public void run()
Description copied from class: Action
The default implementation of this IAction method does nothing. Subclasses should override this method if they do not need information from the triggering event, or override runWithEvent(Event) if they do.

Specified by:
run in interface IAction
Overrides:
run in class TextNavigationAction

Eclipse Platform
Release 3.5

Guidelines for using Eclipse APIs.

Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire