oracle.ide.ceditor
Class CodeNavigationPoint

java.lang.Object
  oracle.ide.navigation.DefaultNavigationPoint
      oracle.ide.ceditor.CodeNavigationPoint

All Implemented Interfaces:

Displayable, oracle.ide.navigation.EditorNavigationPoint, oracle.ide.navigation.NavigationPoint, ContextHolder, Copyable

Direct Known Subclasses:

LineNavigationPoint, OffsetNavigationPoint

public class CodeNavigationPoint
extends oracle.ide.navigation.DefaultNavigationPoint

CodeNavigationPoint is a NavigationPoint implementation intended for registration with the NavigationManager as an EditorNavigationPoint for the CodeEditor class. It is also useful for subclassing by standard NavigationPoint implementations which act upon a FindableEditor.

Field Summary

protected int	change Change index into TextBufferTracker at time of setting Context
protected boolean	explicit Flag indicating that the newly opened Editor should be opened as explicit.
protected java.lang.Class	preferredType Preferred Editor type when opening a new Editor.
protected int	selLength Length of selection hilight beginning at #start
protected int	start Starting offset to be navigated to.
protected TextBufferTracker	tracker TextBufferTracker monitoring changes to #start and #selLength values

Fields inherited from class oracle.ide.navigation.DefaultNavigationPoint

done, nodeURL, prjURL, viewClass, viewID, wspURL

Fields inherited from interface oracle.ide.navigation.NavigationPoint

CANCEL, OK

Constructor Summary

	CodeNavigationPoint() Default constructor.
protected	CodeNavigationPoint(Context context, int start, int length) Constructor.

Method Summary

java.lang.Object	copyTo(java.lang.Object target) Copies the internal state of this object to the specified target.
protected void	copyToImpl(CodeNavigationPoint point) Copy the pertinent state information.
protected Editor	findOrCreateEditor(boolean activate) Find the existing Editor opened on our Context, else attempt to open a new Editor instance.
java.lang.Class	getPreferredEditorType() Get the preferred Editor type to use when asking the EditorManager to open our Context in an Editor.
protected static void	gotoOffset(oracle.ide.ceditor.find.FindableEditor editor, int offset, int range) Reposition the cursor to the given offset, hilighting as necessary.
void	refresh() Fetch and remember the current caret position of the focused editor pane of the FindableEditor.
protected int	renavigate() Reset focus to existing open Editor, else open new Editor instance if no longer available, and set the cursor at the last location remembered from our #refresh method.
void	setContext(Context context)
void	setExplicit(boolean explicit) Set the explicit flag.
void	setPreferredEditorType(java.lang.Class cls) Set the preferred Editor type to use when asking the EditorManager to open the Context in an Editor.

Methods inherited from class oracle.ide.navigation.DefaultNavigationPoint

addNavigationPointListener, contextRemoved, copyToImpl, findEditorInfo, fireDescriptionChanged, fireExpired, getContext, getIcon, getLongLabel, getShortLabel, getToolTipText, navigate, navigateImpl, nodeRenamed, projectRenamed, removeNavigationPointListener, toString, workspaceRenamed

Methods inherited from class java.lang.Object

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

Field Detail

start

protected int start

Starting offset to be navigated to.

selLength

protected int selLength

Length of selection hilight beginning at #start

change

protected int change

Change index into TextBufferTracker at time of setting Context

tracker

protected TextBufferTracker tracker

TextBufferTracker monitoring changes to #start and #selLength values

preferredType

protected java.lang.Class preferredType

Preferred Editor type when opening a new Editor. CodeEditor by default

explicit

protected boolean explicit

Flag indicating that the newly opened Editor should be opened as explicit. false by default.

Constructor Detail

CodeNavigationPoint

public CodeNavigationPoint()

Default constructor.

CodeNavigationPoint

protected CodeNavigationPoint(Context context,
                              int start,
                              int length)

Constructor.

Parameters:

context - the Context describing the Editor in which to navigate.

start - the offset to navigate to, negative value indicates that opening the Editor is enough with no further navigation needed.

length - number of characters to hilight beginning at start.

Method Detail

setContext

public void setContext(Context context)

Specified by:

setContext in interface oracle.ide.navigation.EditorNavigationPoint

Overrides:

setContext in class oracle.ide.navigation.DefaultNavigationPoint

copyTo

public java.lang.Object copyTo(java.lang.Object target)

Copies the internal state of this object to the specified target. If target is null, then this method should create a new instance of this class and proceed to copy the internal state to the newly created object.

Specified by:

copyTo in interface Copyable

Overrides:

copyTo in class oracle.ide.navigation.DefaultNavigationPoint

Parameters:

target - the Object to receive the state, or null.

Returns:

an instance with an identical state.

See Also:

Copyable

copyToImpl

protected final void copyToImpl(CodeNavigationPoint point)

Copy the pertinent state information.

Parameters:

point - the NavigationPoint whose state is to be altered.

refresh

public void refresh()

Fetch and remember the current caret position of the focused editor pane of the FindableEditor.

Specified by:

refresh in interface oracle.ide.navigation.NavigationPoint

Overrides:

refresh in class oracle.ide.navigation.DefaultNavigationPoint

setExplicit

public void setExplicit(boolean explicit)

Set the explicit flag.

Parameters:

explicit - true if the Editor should be opened as explicit.

See Also:

explicit

renavigate

protected int renavigate()
                  throws java.lang.Exception

Reset focus to existing open Editor, else open new Editor instance if no longer available, and set the cursor at the last location remembered from our #refresh method.

Overrides:

renavigate in class oracle.ide.navigation.DefaultNavigationPoint

Returns:

NavigationPoint#OK on success, else NavigationPoint.CANCEL.

Throws:

java.lang.Exception - on failure.

getPreferredEditorType

public java.lang.Class getPreferredEditorType()

Get the preferred Editor type to use when asking the EditorManager to open our Context in an Editor.

Returns:

The preferred Editor type, else null to use the default Editor.

See Also:

EditorManager#openEditorInFrame( Context )

setPreferredEditorType

public void setPreferredEditorType(java.lang.Class cls)

Set the preferred Editor type to use when asking the EditorManager to open the Context in an Editor.

Parameters:

cls - the preferred Editor type, else null to use the default Editor.

See Also:

EditorManager#openEditorInFrame( Context )

findOrCreateEditor

protected Editor findOrCreateEditor(boolean activate)

Find the existing Editor opened on our Context, else attempt to open a new Editor instance.

Parameters:

activate - true if a the Editor should also be activated.

Returns:

The existing, or new Editor, opened on our Context.

gotoOffset

protected static void gotoOffset(oracle.ide.ceditor.find.FindableEditor editor,
                                 int offset,
                                 int range)

Reposition the cursor to the given offset, hilighting as necessary.

Parameters:

editor - the FindableEditor in which the cursor is to be relocated.

offset - the offset to relocate to.

range - the length from offset which should be hilighted.