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Eclipse Platform Release 3.0 |
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java.lang.Objectorg.eclipse.jface.viewers.Viewer
org.eclipse.jface.text.TextViewer
SWT based implementation of ITextViewer
and its extension interfaces.
Once the viewer and its SWT control have been created the viewer can only
indirectly be disposed by disposing its SWT control.
Clients are supposed to instantiate a text viewer and subsequently to
communicate with it exclusively using the
ITextViewer
interface or any of the
implemented extension interfaces.
A text viewer serves as text operation target. It only partially supports the
external control of the enable state of its text operations. A text viewer is
also a widget token owner. Anything that wants to display an overlay window
on top of a text viewer should implement the
IWidgetTokenKeeper
interface and participate
in the widget token negotiation between the text viewer and all its potential
widget token keepers.
Clients should not subclass this class as it is rather likely that subclasses will be broken by future releases.
Nested Class Summary | |
protected class |
TextViewer.TextHoverKey
Value object used as key in the text hover configuration table. |
protected class |
TextViewer.WidgetCommand
Represents a replace command that brings the text viewer's text widget back in synchronization with text viewer's document after the document has been changed. |
Field Summary | |
protected Map |
fAutoIndentStrategies
The text viewer's auto indent strategies |
protected Map |
fDefaultPrefixChars
The string a line is prefixed with on PREFIX and removed from each line on STRIP_PREFIX |
protected Map |
fDoubleClickStrategies
The text viewer's text double click strategies |
protected IEventConsumer |
fEventConsumer
The text viewer's event consumer |
protected FindReplaceDocumentAdapter |
fFindReplaceDocumentAdapter
The find/replace document adapter. |
protected IInformationControlCreator |
fHoverControlCreator
The creator of the text hover control |
protected boolean |
fIgnoreAutoIndent
Should the auto indent strategies ignore the next edit operation |
protected Map |
fIndentChars
The strings a line is prefixed with on SHIFT_RIGHT and removed from each line on SHIFT_LEFT |
protected IDocumentInformationMapping |
fInformationMapping
The mapping between model and visible document. |
protected int |
fLastTopPixel
The last visible vertical position of the top line |
protected Position |
fMarkPosition
The mark position. |
protected PaintManager |
fPaintManager
The viewer's paint manager. |
protected String |
fPartitioning
The viewers partitioning. |
protected boolean |
fReplaceTextPresentation
Indicates whether the viewer's text presentation should be replaced are modified. |
protected Map |
fTextHovers
The text viewer's text hovers |
protected List |
fTextInputListeners
All registered text input listeners |
protected List |
fTextListeners
All registered text listeners |
protected List |
fTextPresentationListeners
All registered text presentation listeners. |
protected IUndoManager |
fUndoManager
The text viewer's undo manager |
protected List |
fViewportListeners
All registered view port listeners> |
protected static int |
INTERNAL
Identifies internal reasons as originators of a view port change. |
protected static int |
KEY
Identifies key strokes as originators of a view port change. |
protected static int |
MOUSE
Identifies mouse moves as originators of a view port change. |
protected static int |
MOUSE_END
Identifies mouse button up as originator of a view port change. |
protected static int |
RESIZE
Identifies window resizing as originator of a view port change. |
protected static int |
SCROLLER
Identifies the scrollbars as originators of a view port change. |
protected static String |
SHIFTING
Internal name of the position category used selection preservation during shift. |
static boolean |
TRACE_ERRORS
Internal flag to indicate the debug state. |
Fields inherited from class org.eclipse.jface.viewers.Viewer |
WIDGET_DATA_KEY |
Fields inherited from interface org.eclipse.jface.text.ITextViewerExtension2 |
DEFAULT_HOVER_STATE_MASK |
Fields inherited from interface org.eclipse.jface.text.ITextOperationTarget |
COPY, CUT, DELETE, PASTE, PREFIX, PRINT, REDO, SELECT_ALL, SHIFT_LEFT, SHIFT_RIGHT, STRIP_PREFIX, UNDO |
Constructor Summary | |
protected |
TextViewer()
Internal use only |
|
TextViewer(Composite parent,
int styles)
Create a new text viewer with the given SWT style bits. |
Method Summary | |
protected int |
_getVisibleRegionOffset()
Returns the offset of the visible region. |
protected IRegion |
_internalGetVisibleRegion()
Returns the visible region if it is not equal to the whole document. |
void |
activatePlugins()
Activates the installed plug-ins. |
void |
addPainter(IPainter painter)
Adds the given painter to this viewer. |
void |
addPostSelectionChangedListener(ISelectionChangedListener listener)
Adds a listener for post selection changes in this selection provider. |
void |
addTextInputListener(ITextInputListener listener)
Adds a text input listener to this viewer. |
void |
addTextListener(ITextListener listener)
Adds a text listener to this viewer. |
void |
addTextPresentationListener(ITextPresentationListener listener)
Adds the given text presentation listener to this text viewer. |
void |
addViewportListener(IViewportListener listener)
Adds the given view port listener to this viewer. |
void |
appendVerifyKeyListener(VerifyKeyListener listener)
Appends a verify key listener to the viewer's list of verify key listeners. |
protected boolean |
areMultipleLinesSelected()
Returns true if one line is completely selected or if multiple lines are selected.
|
boolean |
canDoOperation(int operation)
Returns whether the operation specified by the given operation code can be performed. |
protected boolean |
canPerformFind()
Adheres to the contract of IFindReplaceTarget.canPerformFind() . |
void |
changeTextPresentation(TextPresentation presentation,
boolean controlRedraw)
Applies the color information encoded in the given text presentation. |
protected void |
copyMarkedRegion(boolean delete)
Copies/cuts the marked region. |
protected void |
createControl(Composite parent,
int styles)
Creates the viewer's SWT control. |
protected IDocumentAdapter |
createDocumentAdapter()
Factory method to create the document adapter to be used by this viewer. |
protected IDocument |
createSlaveDocument(IDocument document)
Creates a slave document for the given document if there is a slave document manager associated with this viewer. |
protected ISlaveDocumentManager |
createSlaveDocumentManager()
Creates a new slave document manager. |
protected StyledText |
createTextWidget(Composite parent,
int styles)
Factory method to create the text widget to be used as the viewer's text widget. |
protected void |
customizeDocumentCommand(DocumentCommand command)
Hook called on receipt of a VerifyEvent . |
protected void |
deleteText()
Deprecated. use StyledText.invokeAction instead |
protected void |
disableRedrawing()
Disables the redrawing of this text viewer. |
void |
doOperation(int operation)
Performs the operation specified by the operation code on the target. |
protected void |
enabledRedrawing()
Enables the redrawing of this text viewer. |
protected void |
enabledRedrawing(int topIndex)
Enables the redrawing of this text viewer. |
void |
enableOperation(int operation,
boolean enable)
Enables/disabled the given text operation. |
protected IRegion |
event2ModelRange(VerifyEvent event)
Translates the widget region of the given verify event into the corresponding region of the viewer's document. |
protected int |
findAndSelect(int startPosition,
String findString,
boolean forwardSearch,
boolean caseSensitive,
boolean wholeWord)
Deprecated. as of 3.0 use findAndSelect(int, String, boolean, boolean, boolean, boolean) |
protected int |
findAndSelect(int startPosition,
String findString,
boolean forwardSearch,
boolean caseSensitive,
boolean wholeWord,
boolean regExSearch)
Adheres to the contract of IFindReplaceTargetExtension3.findAndSelect(int, String, boolean, boolean, boolean, boolean) . |
protected int |
findAndSelectInRange(int startPosition,
String findString,
boolean forwardSearch,
boolean caseSensitive,
boolean wholeWord,
int rangeOffset,
int rangeLength,
boolean regExSearch)
Adheres to the contract of IFindReplaceTargetExtension3.findAndSelect(int, String, boolean, boolean, boolean, boolean) . |
protected void |
fireInputDocumentAboutToBeChanged(IDocument oldInput,
IDocument newInput)
Informs all registered text input listeners about the forthcoming input change, This method does not use a robust iterator. |
protected void |
fireInputDocumentChanged(IDocument oldInput,
IDocument newInput)
Informs all registered text input listeners about the successful input change, This method does not use a robust iterator. |
protected void |
firePostSelectionChanged(int offset,
int length)
Sends out a text selection changed event to all registered post selection changed listeners. |
protected void |
fireSelectionChanged(int offset,
int length)
Sends out a text selection changed event to all registered listeners. |
protected void |
freeSlaveDocument(IDocument slave)
Frees the given document if it is a slave document. |
protected int |
getAverageCharWidth()
Returns the average character width of this viewer's widget. |
int |
getBottomIndex()
Returns the visible line with the highest line number. |
int |
getBottomIndexEndOffset()
Returns the document offset of the lower right corner of this viewer's view port. |
protected int |
getClosestWidgetLineForModelLine(int modelLine)
Returns the line of the widget whose corresponding line in the viewer's document is closest to the given line in the viewer's document or -1 . |
Control |
getControl()
Returns the control of this viewer. |
ITextHover |
getCurrentTextHover()
Returns the currently displayed text hover if any, null otherwise. |
IDocument |
getDocument()
Returns the text viewer's input document. |
protected String |
getDocumentPartitioning()
Returns the document partitioning for this viewer. |
protected int |
getEmptySelectionChangedEventDelay()
The delay in milliseconds before an empty selection changed event is sent by the cursor listener. |
protected IRegion |
getExtent(int start,
int end)
Returns the region covered by the given start and end offset. |
protected FindReplaceDocumentAdapter |
getFindReplaceDocumentAdapter()
Returns the find/replace document adapter. |
IFindReplaceTarget |
getFindReplaceTarget()
Returns the find/replace operation target of this viewer. |
Point |
getHoverEventLocation()
Returns the location at which the most recent mouse hover event has occurred. |
Object |
getInput()
Returns the input. |
int |
getMark()
Returns the position of the mark, -1 if the mark is not set. |
IRegion |
getModelCoverage()
Implements the contract of ITextViewerExtension5.getModelCoverage() . |
protected PaintManager |
getPaintManager()
Returns the paint manager of this viewer. |
IRewriteTarget |
getRewriteTarget()
Returns the viewer's rewrite target. |
Point |
getSelectedRange()
Returns the range of the current selection in coordinates of this viewer's document. |
ISelection |
getSelection()
Returns the current selection for this provider. |
ISelectionProvider |
getSelectionProvider()
Returns a selection provider dedicated to this viewer. |
protected ISlaveDocumentManager |
getSlaveDocumentManager()
Returns the slave document manager |
protected ITextHover |
getTextHover(int offset)
Returns the text hover for a given offset. |
protected ITextHover |
getTextHover(int offset,
int stateMask)
Returns the text hover for a given offset and a given state mask. |
protected AbstractInformationControlManager |
getTextHoveringController()
Returns the text hovering controller of this viewer. |
ITextOperationTarget |
getTextOperationTarget()
Returns the text operation target of this viewer. |
StyledText |
getTextWidget()
Returns viewer's text widget. |
int |
getTopIndex()
Returns the visible line with the smallest line number. |
int |
getTopIndexStartOffset()
Returns the document offset of the upper left corner of this viewer's view port. |
int |
getTopInset()
Returns the vertical offset of the first visible line. |
protected IDocument |
getVisibleDocument()
Returns the viewer's visible document. |
protected int |
getVisibleLinesInViewport()
Returns the view port height in lines. |
IRegion |
getVisibleRegion()
Returns the current visible region of this viewer's document. |
protected int |
getWidthInPixels(int offset,
int length)
Returns the width of the representation of a text range in the visible region of the viewer's document as drawn in this viewer's widget. |
protected int |
getWidthInPixels(String text)
Deprecated. use getWidthInPixels(int, int) instead |
protected void |
handleDispose()
Frees all resources allocated by this viewer. |
protected void |
handleVerifyEvent(VerifyEvent e)
Handles the verify event issued by the viewer's text widget. |
protected void |
handleVisibleDocumentAboutToBeChanged(DocumentEvent event)
Hook method called when the visible document is about to be changed. |
protected void |
handleVisibleDocumentChanged(DocumentEvent event)
Hook method called when the visible document has been changed. |
protected void |
ignoreAutoEditStrategies(boolean ignore)
Tells this viewer whether the registered auto edit strategies should be ignored. |
protected void |
initializeDocumentInformationMapping(IDocument visibleDocument)
Initializes the document information mapping between the given slave document and its master document. |
protected void |
inputChanged(Object newInput,
Object oldInput)
Internal hook method called when the input to this viewer is initially set or subsequently changed. |
protected void |
internalRevealRange(int start,
int end)
Reveals the given range of the visible document. |
void |
invalidateTextPresentation()
Marks the currently applied text presentation as invalid. |
void |
invalidateTextPresentation(int offset,
int length)
Invalidates the given range of the text presentation. |
protected boolean |
isBlockSelected()
A block is selected if the character preceding the start of the selection is a new line character. |
boolean |
isEditable()
Returns whether the shown text can be manipulated. |
protected boolean |
isIgnoringAutoEditStrategies()
Returns whether this viewer ignores the registered auto edit strategies. |
protected boolean |
isPrintable()
Returns whether the shown text can be printed. |
protected void |
markChanged(int offset,
int length)
Sends out a mark selection changed event to all registered listeners. |
int |
modelLine2WidgetLine(int modelLine)
Implements the contract of ITextViewerExtension5.modelLine2WidgetLine(int) . |
int |
modelOffset2WidgetOffset(int modelOffset)
Implements the contract of ITextViewerExtension5.modelOffset2WidgetOffset(int) . |
IRegion |
modelRange2WidgetRange(IRegion modelRange)
Implements the contract of ITextViewerExtension5.modelRange2WidgetRange(IRegion) . |
protected IRegion |
modelRange2WidgetRange(Position modelPosition)
Same as modelRange2WidgetRange(IRegion) just for a Position . |
protected Point |
modelSelection2WidgetSelection(Point modelSelection)
Translates the given selection range of the viewer's document into the corresponding widget range or returns null of this fails. |
protected StyleRange |
modelStyleRange2WidgetStyleRange(StyleRange range)
Translates a style range given relative to the viewer's document into style ranges relative to the viewer's widget or null . |
boolean |
moveFocusToWidgetToken()
Instructs the receiver to request the IWidgetTokenKeeper
currently holding the widget token to take the keyboard focus. |
boolean |
overlapsWithVisibleRegion(int start,
int length)
Returns whether a given range overlaps with the visible region of this viewer's document. |
void |
prependAutoEditStrategy(IAutoEditStrategy strategy,
String contentType)
Prepends the given auto edit strategy to the existing list of strategies for the specified content type. |
void |
prependVerifyKeyListener(VerifyKeyListener listener)
Inserts the verify key listener at the beginning of the viewer's list of verify key listeners. |
protected void |
print()
Brings up a print dialog and calls printContents(Printer) which
performs the actual print. |
protected boolean |
redraws()
Returns whether this viewer redraws itself. |
void |
refresh()
Refreshes this viewer completely with information freshly obtained from this viewer's model. |
void |
releaseWidgetToken(IWidgetTokenKeeper tokenKeeper)
The given token keeper releases the token to this token owner. |
void |
removeAutoEditStrategy(IAutoEditStrategy strategy,
String contentType)
Removes the first occurrence of the given auto edit strategy in the list of strategies registered under the specified content type. |
void |
removePainter(IPainter painter)
Removes the given painter from this viewer. |
void |
removePostSelectionChangedListener(ISelectionChangedListener listener)
Removes the given listener for post selection changes from this selection provider. |
void |
removeTextHovers(String contentType)
Removes all text hovers for the given content type independent from their state mask. |
void |
removeTextInputListener(ITextInputListener listener)
Removes the given listener from this viewer's set of text input listeners. |
void |
removeTextListener(ITextListener listener)
Removes the given listener from this viewer's set of text listeners. |
void |
removeTextPresentationListener(ITextPresentationListener listener)
Removes the given text presentation listener from this text viewer. |
void |
removeVerifyKeyListener(VerifyKeyListener listener)
Removes the verify key listener from the viewer's list of verify key listeners. |
void |
removeViewportListener(IViewportListener listener)
Removes the given listener from this viewer's set of view port listeners. |
boolean |
requestWidgetToken(IWidgetTokenKeeper requester)
Requests the widget token from this token owner. |
boolean |
requestWidgetToken(IWidgetTokenKeeper requester,
int priority)
Requests the widget token from this token owner. |
void |
resetPlugins()
Resets the installed plug-ins. |
void |
resetVisibleRegion()
Resets the region of this viewer's document which is visible in the presentation. |
void |
revealRange(int start,
int length)
Ensures that the given range is visible. |
protected Object |
selectContentTypePlugin(int offset,
Map plugins)
Selects from the given map the one which is registered under the content type of the partition in which the given offset is located. |
protected void |
selectionChanged(int offset,
int length)
Sends out a text selection changed event to all registered listeners and registers the selection changed event to be send out to all post selection listeners. |
void |
setAutoIndentStrategy(IAutoIndentStrategy strategy,
String contentType)
Sets this viewer's auto indent strategy for the given content type. |
void |
setDefaultPrefixes(String[] defaultPrefixes,
String contentType)
Sets the string that is used as prefix when lines of the given content type are prefixed by the prefix text operation. |
void |
setDocument(IDocument document)
Sets the given document as the text viewer's model and updates the presentation accordingly. |
void |
setDocument(IDocument document,
int modelRangeOffset,
int modelRangeLength)
Sets the given document as this viewer's model and exposes the specified region. |
void |
setDocumentPartitioning(String partitioning)
Sets the document partitioning of this viewer. |
void |
setEditable(boolean editable)
Sets the editable state. |
void |
setEventConsumer(IEventConsumer consumer)
Registers an event consumer with this viewer. |
void |
setHoverControlCreator(IInformationControlCreator creator)
Sets the creator for the hover controls. |
void |
setIndentPrefixes(String[] indentPrefixes,
String contentType)
Sets the strings that are used as prefixes when lines of the given content type are shifted using the shift text operation. |
void |
setInput(Object input)
Sets or clears the input for this viewer. |
void |
setMark(int offset)
Sets a mark at the given offset or clears the mark if the specified offset is -1 . |
void |
setRedraw(boolean redraw)
Enables/disables the redrawing of this text viewer. |
protected void |
setRedraw(boolean redraw,
int topIndex)
Basically same functionality as ITextViewerExtension.setRedraw(boolean) . |
void |
setSelectedRange(int selectionOffset,
int selectionLength)
Sets the selection to the specified range. |
void |
setSelection(ISelection selection,
boolean reveal)
Sets a new selection for this viewer and optionally makes it visible. |
void |
setTextColor(Color color)
Applies the given color as text foreground color to this viewer's selection. |
void |
setTextColor(Color color,
int start,
int length,
boolean controlRedraw)
Applies the given color as text foreground color to the specified section of this viewer. |
void |
setTextDoubleClickStrategy(ITextDoubleClickStrategy strategy,
String contentType)
Sets this viewer's text double click strategy for the given content type. |
void |
setTextHover(ITextHover hover,
String contentType)
Sets this viewer's text hover for the given content type. |
void |
setTextHover(ITextHover hover,
String contentType,
int stateMask)
Sets this viewer's text hover for the given content type and the given state mask. |
void |
setTopIndex(int index)
Scrolls the widget so the the given index is the line with the smallest line number of all visible lines. |
void |
setUndoManager(IUndoManager undoManager)
Sets this viewer's undo manager. |
protected void |
setVisibleDocument(IDocument document)
Sets this viewer's visible document. |
void |
setVisibleRegion(int start,
int length)
Defines and sets the region of this viewer's document which will be visible in the presentation. |
protected void |
shift(boolean useDefaultPrefixes,
boolean right)
Deprecated. use shift(boolean, boolean, boolean) instead |
protected void |
shift(boolean useDefaultPrefixes,
boolean right,
boolean ignoreWhitespace)
Shifts a text block to the right or left using the specified set of prefix characters. |
protected void |
startSequentialRewriteMode(boolean normalized)
Starts the sequential rewrite mode of the viewer's document. |
protected void |
stopSequentialRewriteMode()
Sets the sequential rewrite mode of the viewer's document. |
protected boolean |
updateSlaveDocument(IDocument slaveDocument,
int modelRangeOffset,
int modelRangeLength)
Updates the given slave document to show the specified range of its master document. |
protected void |
updateTextListeners(TextViewer.WidgetCommand cmd)
Informs all registered text listeners about the change specified by the widget command. |
protected void |
updateViewportListeners(int origin)
Checks whether the view port changed and if so informs all registered listeners about the change. |
protected boolean |
updateVisibleDocument(IDocument visibleDocument,
int visibleRegionOffset,
int visibleRegionLength)
Deprecated. use updateSlaveDocument instead |
protected void |
validateSelectionRange(int[] selectionRange)
Validates and adapts the given selection range if it is not a valid widget selection. |
int |
widgetLine2ModelLine(int widgetLine)
Implements the contract of ITextViewerExtension5.widgetLine2ModelLine(int) . |
int |
widgetLineOfWidgetOffset(int widgetOffset)
Implements the contract of ITextViewerExtension5.widgetLineOfWidgetOffset(int) . |
int |
widgetlLine2ModelLine(int widgetLine)
Implements the contract of ITextViewerExtension5.widgetLine2ModelLine(int) . |
int |
widgetOffset2ModelOffset(int widgetOffset)
Implements the contract of ITextViewerExtension5.widgetOffset2ModelOffset(int) . |
IRegion |
widgetRange2ModelRange(IRegion widgetRange)
Implements the contract of ITextViewerExtension5.widgetRange2ModelRange(IRegion) . |
protected Point |
widgetSelection2ModelSelection(Point widgetSelection)
Translates the given widget selection into the corresponding region of the viewer's document or returns null if this fails. |
Methods inherited from class org.eclipse.jface.viewers.Viewer |
addHelpListener, addSelectionChangedListener, fireHelpRequested, fireSelectionChanged, getData, handleHelpRequest, removeHelpListener, removeSelectionChangedListener, scrollDown, scrollUp, setData, setSelection |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.eclipse.jface.viewers.ISelectionProvider |
addSelectionChangedListener, removeSelectionChangedListener, setSelection |
Field Detail |
public static boolean TRACE_ERRORS
protected static final int SCROLLER
protected static final int MOUSE
protected static final int MOUSE_END
protected static final int KEY
protected static final int RESIZE
protected static final int INTERNAL
protected static final String SHIFTING
protected Position fMarkPosition
protected FindReplaceDocumentAdapter fFindReplaceDocumentAdapter
protected boolean fIgnoreAutoIndent
protected Map fIndentChars
protected Map fDefaultPrefixChars
protected Map fDoubleClickStrategies
protected IUndoManager fUndoManager
protected Map fAutoIndentStrategies
protected Map fTextHovers
protected IInformationControlCreator fHoverControlCreator
protected List fViewportListeners
protected int fLastTopPixel
protected List fTextListeners
protected List fTextInputListeners
protected IEventConsumer fEventConsumer
protected boolean fReplaceTextPresentation
protected IDocumentInformationMapping fInformationMapping
protected PaintManager fPaintManager
protected String fPartitioning
protected List fTextPresentationListeners
Constructor Detail |
protected TextViewer()
public TextViewer(Composite parent, int styles)
parent
- the parent of the viewer's controlstyles
- the SWT style bits for the viewer's controlMethod Detail |
protected StyledText createTextWidget(Composite parent, int styles)
parent
- the parent of the styled textstyles
- the styles for the styled text
protected IDocumentAdapter createDocumentAdapter()
protected void createControl(Composite parent, int styles)
parent
- the parent of the viewer's controlstyles
- the SWT style bits for the viewer's controlpublic Control getControl()
ITextViewerExtension
getControl
in interface ITextViewerExtension
getControl
in class Viewer
public void activatePlugins()
ITextViewer
activatePlugins
in interface ITextViewer
public void resetPlugins()
ITextViewer
IUndoManager
has been installed on this text viewer, the manager's list of remembered
text editing operations is removed.
resetPlugins
in interface ITextViewer
protected void handleDispose()
public StyledText getTextWidget()
getTextWidget
in interface ITextViewer
protected int getEmptySelectionChangedEventDelay()
Note: The return value is used to initialize the cursor listener. To return a non-constant value has no effect.
The same value (500
) is used in OpenStrategy.TIME
.
OpenStrategy
public void setAutoIndentStrategy(IAutoIndentStrategy strategy, String contentType)
ITextViewer
null
any installed strategy for the
content type is removed. This method has been replaced by
ITextViewerExtension2.prependAutoEditStrategy(IAutoEditStrategy, String)
and
ITextViewerExtension2.removeAutoEditStrategy(IAutoEditStrategy, String)
.
It is now equivalent to
ITextViewerExtension2 extension= (ITextViewerExtension2) viewer; extension.removeAutoEditStrategy(oldStrategy, contentType); extension.prependAutoEditStrategy(strategy, contentType);
setAutoIndentStrategy
in interface ITextViewer
strategy
- the new auto indent strategy. null
is a
valid argument.contentType
- the type for which the strategy is registeredpublic void prependAutoEditStrategy(IAutoEditStrategy strategy, String contentType)
ITextViewerExtension2
prependAutoEditStrategy
in interface ITextViewerExtension2
strategy
- the auto edit strategycontentType
- the content typepublic void removeAutoEditStrategy(IAutoEditStrategy strategy, String contentType)
ITextViewerExtension2
removeAutoEditStrategy
in interface ITextViewerExtension2
strategy
- the auto edit strategycontentType
- the content typepublic void setEventConsumer(IEventConsumer consumer)
ITextViewer
VerifyKeyListener
management methods in ITextViewerExtension
.
setEventConsumer
in interface ITextViewer
consumer
- the viewer's event consumer. null
is a
valid argument.public void setIndentPrefixes(String[] indentPrefixes, String contentType)
ITextViewer
setIndentPrefixes
in interface ITextViewer
indentPrefixes
- the prefixes to be usedcontentType
- the content type for which the prefixes are specifiedpublic int getTopInset()
ITextViewer
getTopInset
in interface ITextViewer
public boolean isEditable()
ITextViewer
isEditable
in interface ITextViewer
public void setEditable(boolean editable)
ITextViewer
setEditable
in interface ITextViewer
editable
- the editable statepublic void setDefaultPrefixes(String[] defaultPrefixes, String contentType)
ITextViewer
setDefaultPrefixes
in interface ITextViewer
defaultPrefixes
- the prefixes to be usedcontentType
- the content type for which the prefixes are specifiedpublic void setUndoManager(IUndoManager undoManager)
ITextViewer
setUndoManager
in interface ITextViewer
undoManager
- the new undo manager. null
is a valid argument.public void setTextHover(ITextHover hover, String contentType)
ITextViewer
This method has been replaced by ITextViewerExtension2.setTextHover(ITextHover, String, int)
.
It is now equivalent to
ITextViewerExtension2 extension= (ITextViewerExtension2) document; extension.setTextHover(textViewerHover, contentType, ITextViewerExtension2#DEFAULT_HOVER_STATE_MASK);
setTextHover
in interface ITextViewer
hover
- the new hover. null
is a valid
argument.contentType
- the type for which the hover is registeredpublic void setTextHover(ITextHover hover, String contentType, int stateMask)
ITextViewerExtension2
null
, any hover installed for the given content type and state mask is removed.
setTextHover
in interface ITextViewerExtension2
hover
- the new hover or null
contentType
- the type for which the hover is to be registered or unregisteredstateMask
- the SWT event state mask; DEFAULT_HOVER_STATE_MASK
indicates that
the hover is installed as the default hover.public void removeTextHovers(String contentType)
ITextViewerExtension2
Note: To remove a hover for a given content type and state mask
use ITextViewerExtension2.setTextHover(ITextHover, String, int)
with null
as parameter for the text hover.
removeTextHovers
in interface ITextViewerExtension2
contentType
- the type for which all text hovers are to be unregisteredprotected ITextHover getTextHover(int offset)
offset
- the offset for which to return the text hover
protected ITextHover getTextHover(int offset, int stateMask)
offset
- the offset for which to return the text hoverstateMask
- the SWT event state mask
protected AbstractInformationControlManager getTextHoveringController()
public void setHoverControlCreator(IInformationControlCreator creator)
creator
- the hover control creatorpublic boolean requestWidgetToken(IWidgetTokenKeeper requester)
IWidgetTokenOwner
true
if the token has been acquired or is already owned by
the requester. This method is non-blocking.
Replaced by
IWidgetTokenOwnerExtension.requestWidgetToken(IWidgetTokenKeeper, int)
.
requestWidgetToken
in interface IWidgetTokenOwner
requester
- the token requester
true
if requester acquires the token,
false
otherwisepublic boolean requestWidgetToken(IWidgetTokenKeeper requester, int priority)
IWidgetTokenOwnerExtension
true
if the token has been acquired or is
already owned by the requester. This method is non-blocking.
priority
is forwarded to any existing token keeper
to give it an estimate on whether the request has higher priority than
the current keeper's. There is, however, no guarantee that another keeper
will release the token even if it has a high priority.
requestWidgetToken
in interface IWidgetTokenOwnerExtension
requester
- the token requesterpriority
- the priority of the request
true
if requester acquires the token,
false
otherwisepublic void releaseWidgetToken(IWidgetTokenKeeper tokenKeeper)
IWidgetTokenOwner
releaseWidgetToken
in interface IWidgetTokenOwner
tokenKeeper
- the token keeperpublic Point getSelectedRange()
ITextViewer
getSelectedRange
in interface ITextViewer
public void setSelectedRange(int selectionOffset, int selectionLength)
ITextViewer
setSelectedRange
in interface ITextViewer
selectionOffset
- the offset of the selection rangeselectionLength
- the length of the selection rangeprotected void validateSelectionRange(int[] selectionRange)
[-1, -1]
indicates
that the selection range could not be validated.
Subclasses may reimplement this method.
selectionRange
- selectionRange[0] is the offset, selectionRange[1]
the length of the selection to validate.public void setSelection(ISelection selection, boolean reveal)
Viewer
Subclasses must implement this method.
setSelection
in class Viewer
selection
- the new selectionreveal
- true
if the selection is to be made
visible, and false
otherwisepublic ISelection getSelection()
ISelectionProvider
getSelection
in interface ISelectionProvider
getSelection
in class Viewer
public ISelectionProvider getSelectionProvider()
ITextViewer
getSelectionProvider
in interface ITextViewer
public void addPostSelectionChangedListener(ISelectionChangedListener listener)
IPostSelectionProvider
addPostSelectionChangedListener
in interface IPostSelectionProvider
listener
- a selection changed listenerpublic void removePostSelectionChangedListener(ISelectionChangedListener listener)
IPostSelectionProvider
removePostSelectionChangedListener
in interface IPostSelectionProvider
listener
- a selection changed listenerprotected void firePostSelectionChanged(int offset, int length)
offset
- the offset of the newly selected range in the visible documentlength
- the length of the newly selected range in the visible documentprotected void selectionChanged(int offset, int length)
offset
- the offset of the newly selected range in the visible documentlength
- the length of the newly selected range in the visible documentprotected void fireSelectionChanged(int offset, int length)
offset
- the offset of the newly selected range in the visible documentlength
- the length of the newly selected range in the visible documentprotected void markChanged(int offset, int length)
offset
- the offset of the mark selection in the visible document, the offset is -1
if the mark was clearedlength
- the length of the mark selection, may be negative if the caret is before the mark.public void addTextListener(ITextListener listener)
ITextViewer
addTextListener
in interface ITextViewer
listener
- the listener to be addedpublic void removeTextListener(ITextListener listener)
ITextViewer
removeTextListener
in interface ITextViewer
listener
- the listener to be removedprotected void updateTextListeners(TextViewer.WidgetCommand cmd)
cmd
- the widget command translated into a text event sent to all text listenerspublic void addTextInputListener(ITextInputListener listener)
ITextViewer
addTextInputListener
in interface ITextViewer
listener
- the listener to be addedpublic void removeTextInputListener(ITextInputListener listener)
ITextViewer
removeTextInputListener
in interface ITextViewer
listener
- the listener to be removedprotected void fireInputDocumentAboutToBeChanged(IDocument oldInput, IDocument newInput)
oldInput
- the old input documentnewInput
- the new input documentprotected void fireInputDocumentChanged(IDocument oldInput, IDocument newInput)
oldInput
- the old input documentnewInput
- the new input documentpublic Object getInput()
IInputProvider
getInput
in interface IInputProvider
getInput
in class Viewer
public IDocument getDocument()
ITextViewer
getDocument
in interface ITextViewer
public void setInput(Object input)
Viewer
setInput
in class Viewer
input
- the input of this viewer, or null
if nonepublic void setDocument(IDocument document)
ITextViewer
TextEvent
is
issued. This text event does not carry a related document event.
setDocument
in interface ITextViewer
document
- the viewer's new input documentpublic void setDocument(IDocument document, int modelRangeOffset, int modelRangeLength)
ITextViewer
TextEvent
is issued. The text event does not carry a
related document event. This method is a convenience method for
setDocument(document);setVisibleRegion(offset, length)
.
setDocument
in interface ITextViewer
document
- the new input documentmodelRangeOffset
- the offset of the model rangemodelRangeLength
- the length of the model rangeprotected IDocument createSlaveDocument(IDocument document)
document
- the master document
protected boolean updateVisibleDocument(IDocument visibleDocument, int visibleRegionOffset, int visibleRegionLength) throws BadLocationException
updateSlaveDocument
instead
visibleDocument
- the slave documentvisibleRegionOffset
- the offset of the master document rangevisibleRegionLength
- the length of the master document range
true
if the slave has been adapted successfully
BadLocationException
- in case the specified range is not valid in the master documentprotected boolean updateSlaveDocument(IDocument slaveDocument, int modelRangeOffset, int modelRangeLength) throws BadLocationException
slaveDocument
- the slave documentmodelRangeOffset
- the offset of the master document rangemodelRangeLength
- the length of the master document range
true
if the slave has been adapted successfully
BadLocationException
- in case the specified range is not valid in the master documentpublic void addViewportListener(IViewportListener listener)
ITextViewer
addViewportListener
in interface ITextViewer
listener
- the listener to be addedpublic void removeViewportListener(IViewportListener listener)
ITextViewer
removeViewportListener
in interface ITextViewer
listener
- the listener to be removedprotected void updateViewportListeners(int origin)
origin
- describes under which circumstances this method has been called.IViewportListener
public int getTopIndex()
ITextViewer
getTopIndex
in interface ITextViewer
public void setTopIndex(int index)
ITextViewer
setTopIndex
in interface ITextViewer
index
- the line which should become the top most lineprotected int getVisibleLinesInViewport()
public int getBottomIndex()
ITextViewer
getBottomIndex
in interface ITextViewer
public int getTopIndexStartOffset()
ITextViewer
getTopIndexStartOffset
in interface ITextViewer
public int getBottomIndexEndOffset()
ITextViewer
getBottomIndexEndOffset
in interface ITextViewer
public void revealRange(int start, int length)
ITextViewer
revealRange
in interface ITextViewer
start
- the offset of the range to be revealedlength
- the length of the range to be revealedprotected void internalRevealRange(int start, int end)
start
- the start offset of the rangeend
- the end offset of the rangeprotected final int getWidthInPixels(String text)
getWidthInPixels(int, int)
instead
text
- the string to measure
protected final IRegion getExtent(int start, int end)
start
- offset relative to the start of this viewer's view port
0 <= offset <= getCharCount()end
- offset relative to the start of this viewer's view port
0 <= offset <= getCharCount()
protected final int getWidthInPixels(int offset, int length)
offset
- the offset of the text range in the visible regionlength
- the length of the text range in the visible region
protected final int getAverageCharWidth()
public void refresh()
Viewer
refresh
in class Viewer
protected ISlaveDocumentManager getSlaveDocumentManager()
protected ISlaveDocumentManager createSlaveDocumentManager()
ChildDocumentManager
.
public final void invalidateTextPresentation()
ITextViewer
See ITextViewerExtension2.invalidateTextPresentation(int, int)
for a way to invalidate specific regions rather than the presentation as
a whole.
invalidateTextPresentation
in interface ITextViewer
public final void invalidateTextPresentation(int offset, int length)
invalidateTextPresentation
in interface ITextViewerExtension2
offset
- the offset of the range to be invalidatedlength
- the length of the range to be invalidatedprotected void freeSlaveDocument(IDocument slave)
slave
- the potential slave documentprotected void setVisibleDocument(IDocument document)
document
- the visible documentprotected void handleVisibleDocumentAboutToBeChanged(DocumentEvent event)
Subclasses may override.
event
- the document eventprotected void handleVisibleDocumentChanged(DocumentEvent event)
Subclasses may override.
event
- the document eventprotected void initializeDocumentInformationMapping(IDocument visibleDocument)
visibleDocument
- the slave documentprotected IDocument getVisibleDocument()
protected int _getVisibleRegionOffset()
public IRegion getVisibleRegion()
ITextViewer
setVisibleRegion
if
the document has been modified since then. The visible region is supposed
to be a consecutive region in viewer's input document and every character
inside that region is supposed to visible in the viewer's widget.
Viewers implementing ITextViewerExtension5
may be forced to
change the fractions of the input document that are shown, in order to
fulfill this contract.
getVisibleRegion
in interface ITextViewer
public boolean overlapsWithVisibleRegion(int start, int length)
ITextViewer
Viewers implementing ITextViewerExtension5
may be forced to
change the fractions of the input document that are shown in order to
fulfill this request. This is because the overlap is supposed to be
without gaps.
overlapsWithVisibleRegion
in interface ITextViewer
start
- the offsetlength
- the length
true
if the specified range overlaps with the
visible regionpublic void setVisibleRegion(int start, int length)
ITextViewer
setVisibleRegion
in interface ITextViewer
start
- the offset of the visible regionlength
- the length of the visible regionpublic void resetVisibleRegion()
ITextViewer
resetVisibleRegion
in interface ITextViewer
public void setTextDoubleClickStrategy(ITextDoubleClickStrategy strategy, String contentType)
ITextViewer
setTextDoubleClickStrategy
in interface ITextViewer
strategy
- the new double click strategy. null
is a valid argument.contentType
- the type for which the strategy is registeredprotected Object selectContentTypePlugin(int offset, Map plugins)
plugins
- the map from which to chooseoffset
- the offset for which to find the plug-in
protected void customizeDocumentCommand(DocumentCommand command)
VerifyEvent
. The event has
been translated into a DocumentCommand
which can now be
manipulated by interested parties. By default, the hook forwards the command
to the installed instances of IAutoEditStrategy
.
command
- the document command representing the verify eventprotected void handleVerifyEvent(VerifyEvent e)
e
- the verify eventVerifyListener.verifyText(VerifyEvent)
public boolean canDoOperation(int operation)
ITextOperationTarget
canDoOperation
in interface ITextOperationTarget
operation
- the operation code
true
if the specified operation can be performedpublic void doOperation(int operation)
ITextOperationTarget
doOperation
must only be called if canDoOperation
returns true
.
doOperation
in interface ITextOperationTarget
operation
- the operation codeprotected void ignoreAutoEditStrategies(boolean ignore)
ignore
- true
if the strategies should be ignored.protected boolean isIgnoringAutoEditStrategies()
true
if the strategies are ignoredpublic void enableOperation(int operation, boolean enable)
ITextOperationTargetExtension
enableOperation
in interface ITextOperationTargetExtension
operation
- the operation to enable/disableenable
- true
to enable the operation otherwise false
protected void copyMarkedRegion(boolean delete)
delete
- true
if the region should be deleted rather than copied.protected void deleteText()
StyledText.invokeAction
instead
protected boolean isBlockSelected()
true
if a block is selectedprotected boolean areMultipleLinesSelected()
true
if one line is completely selected or if multiple lines are selected.
Being completely selected means that all characters except the new line characters are
selected.
true
if one or multiple lines are selectedprotected void shift(boolean useDefaultPrefixes, boolean right)
useDefaultPrefixes
- says whether the configured default or indent prefixes should be usedright
- says whether to shift to the right or the leftprotected void shift(boolean useDefaultPrefixes, boolean right, boolean ignoreWhitespace)
useDefaultPrefixes
- says whether the configured default or indent prefixes should be usedright
- says whether to shift to the right or the leftignoreWhitespace
- says whether whitespace in front of prefixes is allowedprotected boolean isPrintable()
protected void print()
printContents(Printer)
which
performs the actual print.
protected boolean canPerformFind()
IFindReplaceTarget.canPerformFind()
.
true
if find can be performed, false
otherwiseprotected int findAndSelect(int startPosition, String findString, boolean forwardSearch, boolean caseSensitive, boolean wholeWord)
findAndSelect(int, String, boolean, boolean, boolean, boolean)
IFindReplaceTarget.findAndSelect(int, String, boolean, boolean, boolean)
.
startPosition
- the start positionfindString
- the find string specificationforwardSearch
- the search directioncaseSensitive
- true
if case sensitive, false
otherwisewholeWord
- true
if match must be whole words, false
otherwise
protected int findAndSelect(int startPosition, String findString, boolean forwardSearch, boolean caseSensitive, boolean wholeWord, boolean regExSearch)
IFindReplaceTargetExtension3.findAndSelect(int, String, boolean, boolean, boolean, boolean)
.
startPosition
- the start positionfindString
- the find string specificationforwardSearch
- the search directioncaseSensitive
- true
if case sensitive, false
otherwisewholeWord
- true
if matches must be whole words, false
otherwiseregExSearch
- true
if findString
is a regular expression, false
otherwise
protected int findAndSelectInRange(int startPosition, String findString, boolean forwardSearch, boolean caseSensitive, boolean wholeWord, int rangeOffset, int rangeLength, boolean regExSearch)
IFindReplaceTargetExtension3.findAndSelect(int, String, boolean, boolean, boolean, boolean)
.
startPosition
- the start positionfindString
- the find string specificationforwardSearch
- the search directioncaseSensitive
- true
if case sensitive, false
otherwisewholeWord
- true
if matches must be whole words, false
otherwiserangeOffset
- the search scope offsetrangeLength
- the search scope lengthregExSearch
- true
if findString
is a regular expression, false
otherwise
public void setTextColor(Color color)
ITextViewer
setTextColor
in interface ITextViewer
color
- the color to be appliedpublic void setTextColor(Color color, int start, int length, boolean controlRedraw)
ITextViewer
controlRedraw
tells this viewer whether it
should take care of redraw management or not.
setTextColor
in interface ITextViewer
color
- the color to be appliedstart
- the offset of the range to be changedlength
- the length of the range to be changedcontrolRedraw
- indicates whether this viewer should manage redrawsprotected IRegion _internalGetVisibleRegion()
null
.
null
public void changeTextPresentation(TextPresentation presentation, boolean controlRedraw)
ITextViewer
controlRedraw
tells this viewer whether it should take care of
redraw management or not. If, e.g., this call is one in a sequence of multiple
presentation calls, it is more appropriate to explicitly control redrawing at the
beginning and the end of the sequence.
changeTextPresentation
in interface ITextViewer
presentation
- the presentation to be applied to this viewercontrolRedraw
- indicates whether this viewer should manage redrawspublic IFindReplaceTarget getFindReplaceTarget()
ITextViewer
getFindReplaceTarget
in interface ITextViewer
protected FindReplaceDocumentAdapter getFindReplaceDocumentAdapter()
public ITextOperationTarget getTextOperationTarget()
ITextViewer
getTextOperationTarget
in interface ITextViewer
public void appendVerifyKeyListener(VerifyKeyListener listener)
ITextViewerExtension
appendVerifyKeyListener
in interface ITextViewerExtension
listener
- the listener to be addedpublic void prependVerifyKeyListener(VerifyKeyListener listener)
ITextViewerExtension
prependVerifyKeyListener
in interface ITextViewerExtension
listener
- the listener to be insertedpublic void removeVerifyKeyListener(VerifyKeyListener listener)
ITextViewerExtension
removeVerifyKeyListener
in interface ITextViewerExtension
listener
- the listener to be removedpublic int getMark()
ITextViewerExtension
-1
if the mark is not set.
getMark
in interface ITextViewerExtension
-1
if no mark is setpublic void setMark(int offset)
ITextViewerExtension
-1
. If a mark is set and the selection is
empty, cut and copy actions performed on this text viewer work on the
region described by the positions of the mark and the cursor.
setMark
in interface ITextViewerExtension
offset
- the offset of the markprotected void inputChanged(Object newInput, Object oldInput)
Viewer
The default implementation does nothing. Subclassers may override this method to do something when a viewer's input is set. A typical use is populate the viewer.
inputChanged
in class Viewer
newInput
- the new input of this viewer, or null
if noneoldInput
- the old input element or null
if there
was previously no inputprotected void enabledRedrawing()
protected void enabledRedrawing(int topIndex)
topIndex
- the top index to be set or -1
protected void disableRedrawing()
public final void setRedraw(boolean redraw)
ITextViewerExtension
StyledText
widget. While being
disconnected only the viewer's selection may be changed using
setSelectedRange
. Any direct manipulation of the widget
as well as calls to methods that change the viewer's presentation state
(such as enabling the segmented view) are not allowed. When redrawing is
disabled the viewer does not send out any selection or view port change
notification. When redrawing is enabled again, a selection change
notification is sent out for the selected range and this range is
revealed causing a view port changed notification.
setRedraw
in interface ITextViewerExtension
redraw
- true
to enable redrawing, false
otherwiseprotected final void setRedraw(boolean redraw, int topIndex)
ITextViewerExtension.setRedraw(boolean)
. Adds a way for
subclasses to pass in a desired top index that should be used when
redraw
is true
. If topIndex
is -1, this method is identical to
ITextViewerExtension.setRedraw(boolean)
.
redraw
- topIndex
- ITextViewerExtension.setRedraw(boolean)
protected final boolean redraws()
true
if this viewer redraws itselfprotected final void startSequentialRewriteMode(boolean normalized)
normalized
- true
if the rewrite is performed from the start to the end of the documentprotected final void stopSequentialRewriteMode()
public IRewriteTarget getRewriteTarget()
ITextViewerExtension
getRewriteTarget
in interface ITextViewerExtension
public ITextHover getCurrentTextHover()
ITextViewerExtension2
null
otherwise.
getCurrentTextHover
in interface ITextViewerExtension2
null
public Point getHoverEventLocation()
ITextViewerExtension2
getHoverEventLocation
in interface ITextViewerExtension2
protected PaintManager getPaintManager()
public void addPainter(IPainter painter)
addPainter
in interface ITextViewerExtension2
painter
- the painter to be addedpublic void removePainter(IPainter painter)
removePainter
in interface ITextViewerExtension2
painter
- the painter to be removedpublic int modelLine2WidgetLine(int modelLine)
ITextViewerExtension5.modelLine2WidgetLine(int)
.
modelLine
- the model line
-1
public int modelOffset2WidgetOffset(int modelOffset)
ITextViewerExtension5.modelOffset2WidgetOffset(int)
.
modelOffset
- the model offset
-1
public IRegion modelRange2WidgetRange(IRegion modelRange)
ITextViewerExtension5.modelRange2WidgetRange(IRegion)
.
modelRange
- the model range
null
public int widgetlLine2ModelLine(int widgetLine)
ITextViewerExtension5.widgetLine2ModelLine(int)
.
widgetLine
- the widget line
public int widgetLine2ModelLine(int widgetLine)
ITextViewerExtension5.widgetLine2ModelLine(int)
.
widgetLine
- the widget line
-1
public int widgetOffset2ModelOffset(int widgetOffset)
ITextViewerExtension5.widgetOffset2ModelOffset(int)
.
widgetOffset
- the widget offset
-1
public IRegion widgetRange2ModelRange(IRegion widgetRange)
ITextViewerExtension5.widgetRange2ModelRange(IRegion)
.
widgetRange
- the widget range
null
public IRegion getModelCoverage()
ITextViewerExtension5.getModelCoverage()
.
protected int getClosestWidgetLineForModelLine(int modelLine)
-1
.
modelLine
- the line in the viewer's document
-1
protected StyleRange modelStyleRange2WidgetStyleRange(StyleRange range)
null
.
range
- the style range in the coordinates of the viewer's document
null
protected IRegion modelRange2WidgetRange(Position modelPosition)
modelRange2WidgetRange(IRegion)
just for a Position
.
modelPosition
- the position describing a range in the viewer's document
protected IRegion event2ModelRange(VerifyEvent event)
event
- the verify event
protected Point widgetSelection2ModelSelection(Point widgetSelection)
null
if this fails.
widgetSelection
- the widget selection
null
protected Point modelSelection2WidgetSelection(Point modelSelection)
null
of this fails.
modelSelection
- the selection range of the viewer's document
null
public int widgetLineOfWidgetOffset(int widgetOffset)
ITextViewerExtension5.widgetLineOfWidgetOffset(int)
.
widgetOffset
- the widget offset
-1
public boolean moveFocusToWidgetToken()
ITextViewerExtension4
IWidgetTokenKeeper
currently holding the widget token to take the keyboard focus.
moveFocusToWidgetToken
in interface ITextViewerExtension4
true
if there was any
IWidgetTokenKeeper
that was asked to take the
focus, false
otherwisepublic void setDocumentPartitioning(String partitioning)
partitioning
- the partitioning nameprotected String getDocumentPartitioning()
public void addTextPresentationListener(ITextPresentationListener listener)
ITextViewerExtension4
addTextPresentationListener
in interface ITextViewerExtension4
listener
- the text presentation listenerpublic void removeTextPresentationListener(ITextPresentationListener listener)
ITextViewerExtension4
removeTextPresentationListener
in interface ITextViewerExtension4
listener
- the text presentation listener
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