org.eclipse.ui.texteditor
Class AbstractTextEditor.LineStartAction

java.lang.Object
  org.eclipse.ui.texteditor.TextNavigationAction
      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, IMAGE, 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() Runs this action.

Methods inherited from class org.eclipse.ui.texteditor.TextNavigationAction

addPropertyChangeListener, fireSelectionChanged, fireSelectionChanged, getAccelerator, getActionDefinitionId, getDescription, getDisabledImageDescriptor, getHelpListener, getHoverImageDescriptor, getId, getImageDescriptor, getMenuCreator, getStyle, getText, getTextWidget, getToolTipText, isChecked, isEnabled, removePropertyChangeListener, runWithEvent, setAccelerator, setActionDefinitionId, setChecked, setDescription, setDisabledImageDescriptor, setEnabled, setHelpListener, setHoverImageDescriptor, setId, setImageDescriptor, setMenuCreator, setText, setToolTipText

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

run

public void run()

Description copied from interface: IAction

Runs this action. Each action implementation must define the steps needed to carry out this action. The default implementation of this method in Action does nothing.

Specified by:

run in interface IAction

Overrides:

run in class TextNavigationAction