palmed.edit.view
Class Viewport

java.lang.Object
  palmed.edit.view.Viewport

All Implemented Interfaces:

ISelectionView, ITextView, IContent, IView, IViewport, ISerializable

public final class Viewport
extends java.lang.Object
implements IViewport, IContent, IView

This class implements a viewport on a content.

Version:

$Revision$ $Date$

Author:

Mathieu Champlon

Constructor Summary

Viewport(IContent content)
Create a content viewport.

Method Summary

void	accept(ILineVisitor visitor, int y) Visit a line of text.
void	backspace() Handle a backspace event.
void	clear() Reset the content.
void	click(int x, int y) Handle a click event at a given location.
void	copy(java.io.OutputStream stream) Copy the current selected text.
void	cut(java.io.OutputStream stream) Cut the current selected text.
void	drag(int x, int y) Handle a drag event to a given location.
void	enter() Handle an enter event.
void	marshall(java.io.OutputStream stream) Write to an output stream.
void	modified(boolean status) Notify the modification flag has changed.
void	paste(java.io.InputStream stream) Paste the given text.
void	redo() Redo the last undo.
void	register(IScrollView view) Register a view to be notified of scroll events.
void	register(IView view) Register a view for events notification.
void	resize(int columns, int lines) Resize the viewport.
void	scroll(int columns, int lines) Scroll the viewport.
void	type(int keyCode) Handle a character typing.
void	undo() Undo the last action.
void	unmarshall(java.io.InputStream stream) Read from an input stream.
void	update(Coordinate position) Notify the insertion position has changed.
void	update(int columns, int lines) Notify the text bounding box has changed.

Methods inherited from class java.lang.Object

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

Constructor Detail

Viewport

public Viewport(IContent content)

Create a content viewport.

Parameters:

content - the content to manage

Method Detail

type

public void type(int keyCode)

Handle a character typing.

Specified by:

type in interface IContent

Parameters:

keyCode - the value of the key entered

drag

public void drag(int x,
                 int y)

Handle a drag event to a given location.

Specified by:

drag in interface IContent

Parameters:

x - destination column

y - destination line

click

public void click(int x,
                  int y)

Handle a click event at a given location.

Specified by:

click in interface IContent

Parameters:

x - location column

y - location line

enter

public void enter()

Handle an enter event.

Specified by:

enter in interface IContent

backspace

public void backspace()

Handle a backspace event.

Specified by:

backspace in interface IContent

accept

public void accept(ILineVisitor visitor,
                   int y)

Visit a line of text.

Specified by:

accept in interface IContent

Parameters:

visitor - the visitor

y - the line number

register

public void register(IView view)

Register a view for events notification.

Specified by:

register in interface IContent

Parameters:

view - the view to register

scroll

public void scroll(int columns,
                   int lines)

Scroll the viewport.

Specified by:

scroll in interface IViewport

Parameters:

columns - the number of columns to scroll

lines - the number of lines to scroll

update

public void update(Coordinate position)

Notify the insertion position has changed.

Specified by:

update in interface ISelectionView

Parameters:

position - the new position

update

public void update(int columns,
                   int lines)

Notify the text bounding box has changed.

Specified by:

update in interface ITextView

Parameters:

columns - the number of columns

lines - the number of lines

modified

public void modified(boolean status)

Notify the modification flag has changed.

Specified by:

modified in interface ITextView

Parameters:

status - the new modification status

resize

public void resize(int columns,
                   int lines)

Resize the viewport.

Specified by:

resize in interface IViewport

Parameters:

columns - the number of columns visible

lines - the number of lines visible

register

public void register(IScrollView view)

Register a view to be notified of scroll events.

The content viewport must be able to handle several views.

Specified by:

register in interface IViewport

Parameters:

view - the view to register

unmarshall

public void unmarshall(java.io.InputStream stream)
                throws java.io.IOException

Read from an input stream.

Specified by:

unmarshall in interface ISerializable

Parameters:

stream - the stream to read from

Throws:

java.io.IOException - an io exception occurs

marshall

public void marshall(java.io.OutputStream stream)
              throws java.io.IOException

Write to an output stream.

Specified by:

marshall in interface ISerializable

Parameters:

stream - the stream to write to

Throws:

java.io.IOException - an io exception occurs

clear

public void clear()

Reset the content.

Specified by:

clear in interface IContent

copy

public void copy(java.io.OutputStream stream)
          throws java.io.IOException

Copy the current selected text.

Specified by:

copy in interface IContent

Parameters:

stream - the stream to write to

Throws:

java.io.IOException - an io exception occurs

cut

public void cut(java.io.OutputStream stream)
         throws java.io.IOException

Cut the current selected text.

Specified by:

cut in interface IContent

Parameters:

stream - the stream to write to

Throws:

java.io.IOException - an io exception occurs

paste

public void paste(java.io.InputStream stream)
           throws java.io.IOException

Paste the given text.

Specified by:

paste in interface IContent

Parameters:

stream - the stream to read from

Throws:

java.io.IOException - an io exception occurs

undo

public void undo()

Undo the last action.

Specified by:

undo in interface IContent

redo

public void redo()

Redo the last undo.

Specified by:

redo in interface IContent