com.taobao.text

类 VirtualScreen

java.lang.Object

com.taobao.text.VirtualScreen

所有已实现的接口:

Screenable, ScreenContext, Appendable

public class VirtualScreen
extends Object
implements ScreenContext

A virtual screen that can be scrolled. This class is thread safe, as it can be used concurrently by two threads, for example one thread can provide new elements while another thread is repainting the buffer to the screen, both threads can either modify the underlying data structure. Paint could also be called concurrently by two threads, one that just provided a new element and wants to repaint the structure and another that changes the current cursor and asks for a repaint too.

作者:

Julien Viet

构造器概要

构造器

构造器和说明
VirtualScreen(ScreenContext out)

方法概要

限定符和类型	方法和说明
Screenable	append(char c)
Screenable	append(CharSequence s)
Screenable	append(CharSequence csq, int start, int end)
Screenable	append(Style style)
Screenable	cls()
void	flush() Flush the stream.
int	getHeight() Returns the screen height in chars.
int	getWidth() Returns the screen width in chars.
boolean	isPainted()
boolean	isPainting()
boolean	isRefresh()
int	nextPage()
boolean	nextRow()
VirtualScreen	paint() Pain the underlying screen context.
boolean	previousRow()
boolean	update()

从类继承的方法 java.lang.Object

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

构造器详细资料

VirtualScreen

public VirtualScreen(ScreenContext out)

方法详细资料

getWidth

public int getWidth()

从接口复制的说明: ScreenContext

Returns the screen width in chars. When the value is not positive it means the value could not be determined.

指定者:

getWidth 在接口中 ScreenContext

返回:

the term width

getHeight

public int getHeight()

从接口复制的说明: ScreenContext

Returns the screen height in chars. When the value is not positive it means the value could not be determined.

指定者:

getHeight 在接口中 ScreenContext

返回:

the term height

append

public Screenable append(CharSequence s)
                  throws IOException

指定者:

append 在接口中 Appendable

抛出:

IOException

append

public Screenable append(char c)
                  throws IOException

指定者:

append 在接口中 Appendable

抛出:

IOException

append

public Screenable append(CharSequence csq,
                         int start,
                         int end)
                  throws IOException

指定者:

append 在接口中 Appendable

抛出:

IOException

append

public Screenable append(Style style)
                  throws IOException

指定者:

append 在接口中 Screenable

抛出:

IOException

cls

public Screenable cls()
               throws IOException

指定者:

cls 在接口中 Screenable

抛出:

IOException

paint

public VirtualScreen paint()
                    throws IOException

Pain the underlying screen context.

返回:

this screen buffer

抛出:

IOException - any io exception

previousRow

public boolean previousRow()
                    throws IOException

抛出:

IOException

isPainted

public boolean isPainted()

返回:

true if the buffer is painted

isRefresh

public boolean isRefresh()

返回:

true if the buffer is stale and needs a full repaint

isPainting

public boolean isPainting()

返回:

true if the buffer is waiting for input to become painted

nextRow

public boolean nextRow()
                throws IOException

抛出:

IOException

nextPage

public int nextPage()
             throws IOException

抛出:

IOException

update

public boolean update()
               throws IOException

抛出:

IOException

flush

public void flush()
           throws IOException

从接口复制的说明: ScreenContext

Flush the stream.

指定者:

flush 在接口中 ScreenContext

抛出:

IOException - any io exception