Package jexer.backend

Class TWindowBackend

java.lang.Object

jexer.TWidget

jexer.TWindow

jexer.backend.TWindowBackend

All Implemented Interfaces:

java.lang.Comparable<TWidget>, Backend

public class TWindowBackend
extends TWindow
implements Backend

TWindowBackend uses a window in one TApplication to provide a backend for another TApplication. Note that TWindow has its own getScreen() and setTitle() functions. Clients in TWindowBackend's application won't be able to use it to get at the other application's screen. getOtherScreen() has been provided.

Field Summary

Fields inherited from class jexer.TWindow

ABSOLUTEXY, CENTERED, helpTopic, HIDEONCLOSE, inKeyboardResize, inWindowMove, inWindowResize, MODAL, mouse, NOCLOSEBOX, NOZOOMBOX, overlay, OVERRIDEMENU, RESIZABLE, statusBar, underlay

Constructor Summary

Constructors

Constructor	Description
TWindowBackend(java.lang.Object listener, TApplication application, java.lang.String title, int width, int height)	Public constructor.
TWindowBackend(java.lang.Object listener, TApplication application, java.lang.String title, int width, int height, int flags)	Public constructor.
TWindowBackend(java.lang.Object listener, TApplication application, java.lang.String title, int x, int y, int width, int height)	Public constructor.
TWindowBackend(java.lang.Object listener, TApplication application, java.lang.String title, int x, int y, int width, int height, int flags)	Public constructor.

Method Summary

Modifier and Type	Method	Description
void	draw()	Draw the foreground colors grid.
void	flushScreen()	Subclasses must provide an implementation that syncs the logical screen to the physical device.
void	getEvents(java.util.List<TInputEvent> queue)	Subclasses must provide an implementation to get keyboard, mouse, and screen resize events.
Screen	getOtherScreen()	Getter for the other application's screen.
SessionInfo	getSessionInfo()	Getter for sessionInfo.
boolean	hasEvents()	Check if there are events in the queue.
boolean	isImagesOverText()	Check if backend will support incomplete image fragments over text display.
boolean	isPixelMouse()	Check if backend is reporting pixel-based mouse position.
boolean	isReadOnly()	Check if backend is read-only.
protected boolean	mouseOnOtherScreen(TMouseEvent mouse)	Returns true if the mouse is currently in the otherScreen window.
void	onClose()	Subclasses should override this method to cleanup resources.
void	onKeypress(TKeypressEvent keypress)	Handle keystrokes.
void	onMouseDown(TMouseEvent mouse)	Handle mouse button presses.
void	onMouseMotion(TMouseEvent mouse)	Handle mouse movements.
void	onMouseUp(TMouseEvent mouse)	Handle mouse button releases.
void	onResize(TResizeEvent event)	Handle window/screen resize events.
void	reloadOptions()	Reload backend options from System properties.
void	setDrawLock(java.lang.Object drawLock)	Set the object to sync to in draw().
void	setListener(java.lang.Object listener)	Set listener to a different Object.
void	setOtherApplication(TApplication application)	Set the other screen's application.
void	setPixelMouse(boolean pixelMouse)	Set request for backend to report pixel-based mouse position.
void	setReadOnly(boolean readOnly)	Set read-only flag.
void	shutdown()	Subclasses must provide an implementation that closes sockets, restores console, etc.

Methods inherited from class jexer.TWindow

activate, addOverlay, addShortcutKeypress, addUnderlay, center, clearShortcutKeypresses, close, ensureOnScreen, getApplication, getBackground, getBorder, getBorderControls, getHelpTopic, getMaximumWindowHeight, getMaximumWindowWidth, getMinimumWindowHeight, getMinimumWindowWidth, getScreen, getStatusBar, getTitle, getZ, hasCloseBox, hasHiddenMouse, hasOverriddenMenu, hasZoomBox, hide, inMovements, isHidden, isModal, isResizable, isShortcutKeypress, isShown, maximize, mouseOnClose, mouseOnMaximize, mouseOnResize, newStatusBar, onCommand, onFocus, onHide, onMenu, onPreClose, onShow, onUnfocus, removeShortcutKeypress, restore, setCloseBox, setHiddenMouse, setMaximumWindowHeight, setMaximumWindowWidth, setMinimumWindowHeight, setMinimumWindowWidth, setResizable, setTackboardsDirty, setTitle, setZ, setZoomBox, show, stopMovements, toString

Methods inherited from class jexer.TWidget

activate, activate, activateAll, addButton, addCalendar, addCheckBox, addCheckBox, addComboBox, addDirectoryList, addDirectoryList, addDirectoryList, addDirectoryList, addEditor, addField, addField, addField, addField, addImage, addImage, addLabel, addLabel, addLabel, addLabel, addLabel, addLabel, addList, addList, addList, addList, addPanel, addPasswordField, addPasswordField, addPasswordField, addProgressBar, addRadioGroup, addRadioGroup, addSpinner, addSplitPane, addTable, addTable, addText, addText, addTreeViewWidget, addTreeViewWidget, compareTo, doRepaint, drawBox, drawBox, drawBoxShadow, drawChildren, fileOpenBox, fileOpenBox, fileOpenBox, fileOpenBox, fileSaveBox, getAbsoluteX, getAbsoluteY, getActiveChild, getAttrXY, getChildren, getClipboard, getCursorAbsoluteX, getCursorAbsoluteY, getCursorX, getCursorY, getCustomMousePointer, getHeight, getLayoutManager, getMouseStyle, getParent, getTheme, getWidgetUnderMouse, getWidth, getWindow, getX, getY, handleEvent, hasChild, hLineXY, inputBox, inputBox, inputBox, isAbsoluteActive, isActive, isCursorVisible, isDrawable, isEchoKeystrokes, isEnabled, isVisible, messageBox, messageBox, mouseWouldHit, onIdle, onMouseDoubleClick, putAll, putAttrXY, putAttrXY, putCharXY, putCharXY, putCharXY, putStringXY, putStringXY, remove, remove, remove, remove, removeAll, resetTabOrder, setActive, setCursorVisible, setCursorX, setCursorY, setCustomMousePointer, setDimensions, setEchoKeystrokes, setEchoKeystrokes, setEnabled, setHeight, setLayoutManager, setMouseStyle, setParent, setupForTWindow, setVisible, setWidth, setWindow, setX, setY, splitHorizontal, splitVertical, switchWidget, toPrettyString, toPrettyString, vLineXY

Methods inherited from class java.lang.Object

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

Methods inherited from interface jexer.backend.Backend

getScreen, setMouseStyle, setTitle

Constructor Detail

TWindowBackend

public TWindowBackend(java.lang.Object listener,
                      TApplication application,
                      java.lang.String title,
                      int width,
                      int height)

Public constructor. Window will be located at (0, 0).

Parameters:

listener - the object this backend needs to wake up when new input comes in

application - TApplication that manages this window

title - window title, will be centered along the top border

width - width of window

height - height of window

TWindowBackend

public TWindowBackend(java.lang.Object listener,
                      TApplication application,
                      java.lang.String title,
                      int width,
                      int height,
                      int flags)

Public constructor. Window will be located at (0, 0).

Parameters:

listener - the object this backend needs to wake up when new input comes in

application - TApplication that manages this window

title - window title, will be centered along the top border

width - width of window

height - height of window

flags - bitmask of RESIZABLE, CENTERED, or MODAL

TWindowBackend

public TWindowBackend(java.lang.Object listener,
                      TApplication application,
                      java.lang.String title,
                      int x,
                      int y,
                      int width,
                      int height)

Public constructor.

Parameters:

listener - the object this backend needs to wake up when new input comes in

application - TApplication that manages this window

title - window title, will be centered along the top border

x - column relative to parent

y - row relative to parent

width - width of window

height - height of window

TWindowBackend

public TWindowBackend(java.lang.Object listener,
                      TApplication application,
                      java.lang.String title,
                      int x,
                      int y,
                      int width,
                      int height,
                      int flags)

Public constructor.

Parameters:

listener - the object this backend needs to wake up when new input comes in

application - TApplication that manages this window

title - window title, will be centered along the top border

x - column relative to parent

y - row relative to parent

width - width of window

height - height of window

flags - mask of RESIZABLE, CENTERED, or MODAL

Method Detail

onResize

public void onResize(TResizeEvent event)

Handle window/screen resize events.

Overrides:

onResize in class TWindow

Parameters:

event - resize event

mouseOnOtherScreen

protected boolean mouseOnOtherScreen(TMouseEvent mouse)

Returns true if the mouse is currently in the otherScreen window.

Parameters:

mouse - mouse event

Returns:

true if mouse is currently in the otherScreen window.

onMouseDown

public void onMouseDown(TMouseEvent mouse)

Handle mouse button presses.

Overrides:

onMouseDown in class TWindow

Parameters:

mouse - mouse button event

onMouseUp

public void onMouseUp(TMouseEvent mouse)

Handle mouse button releases.

Overrides:

onMouseUp in class TWindow

Parameters:

mouse - mouse button release event

onMouseMotion

public void onMouseMotion(TMouseEvent mouse)

Handle mouse movements.

Overrides:

onMouseMotion in class TWindow

Parameters:

mouse - mouse motion event

onKeypress

public void onKeypress(TKeypressEvent keypress)

Handle keystrokes.

Overrides:

onKeypress in class TWindow

Parameters:

keypress - keystroke event

draw

public void draw()

Draw the foreground colors grid.

Overrides:

draw in class TWindow

onClose

public void onClose()

Subclasses should override this method to cleanup resources. This is called by application.closeWindow().

Overrides:

onClose in class TWindow

getSessionInfo

public final SessionInfo getSessionInfo()

Getter for sessionInfo.

Specified by:

getSessionInfo in interface Backend

Returns:

the SessionInfo

flushScreen

public void flushScreen()

Subclasses must provide an implementation that syncs the logical screen to the physical device.

Specified by:

flushScreen in interface Backend

hasEvents

public boolean hasEvents()

Check if there are events in the queue.

Specified by:

hasEvents in interface Backend

Returns:

if true, getEvents() has something to return to the application

getEvents

public void getEvents(java.util.List<TInputEvent> queue)

Subclasses must provide an implementation to get keyboard, mouse, and screen resize events.

Specified by:

getEvents in interface Backend

Parameters:

queue - list to append new events to

shutdown

public void shutdown()

Subclasses must provide an implementation that closes sockets, restores console, etc.

Specified by:

shutdown in interface Backend

setListener

public void setListener(java.lang.Object listener)

Set listener to a different Object.

Specified by:

setListener in interface Backend

Parameters:

listener - the new listening object that run() wakes up on new input

reloadOptions

public void reloadOptions()

Reload backend options from System properties.

Specified by:

reloadOptions in interface Backend

isReadOnly

public boolean isReadOnly()

Check if backend is read-only.

Specified by:

isReadOnly in interface Backend

Returns:

true if user input events from the backend are discarded

setReadOnly

public void setReadOnly(boolean readOnly)

Set read-only flag.

Specified by:

setReadOnly in interface Backend

Parameters:

readOnly - if true, then input events will be discarded

isImagesOverText

public boolean isImagesOverText()

Check if backend will support incomplete image fragments over text display.

Specified by:

isImagesOverText in interface Backend

Returns:

true if images can partially obscure text

isPixelMouse

public boolean isPixelMouse()

Check if backend is reporting pixel-based mouse position.

Specified by:

isPixelMouse in interface Backend

Overrides:

isPixelMouse in class TWidget

Returns:

true if single-pixel mouse movements are reported

setPixelMouse

public void setPixelMouse(boolean pixelMouse)

Set request for backend to report pixel-based mouse position.

Specified by:

setPixelMouse in interface Backend

Parameters:

pixelMouse - if true, single-pixel mouse movements will be reported, if the backend supports it

setDrawLock

public void setDrawLock(java.lang.Object drawLock)

Set the object to sync to in draw().

Parameters:

drawLock - the object to synchronize on

getOtherScreen

public Screen getOtherScreen()

Getter for the other application's screen.

Returns:

the Screen

setOtherApplication

public void setOtherApplication(TApplication application)

Set the other screen's application.

Parameters:

application - the application driving the other screen