Package xtwm.plugins

Class SystemMonitor

java.lang.Object

jexer.TWidget

xtwm.plugins.PluginWidget

xtwm.plugins.SystemMonitor

All Implemented Interfaces:

java.lang.Comparable<TWidget>

public class SystemMonitor
extends PluginWidget

SystemMonitor is a simple real-time performance monitor that shows the CPU, memory, and disk usage exposed to the JVM through the Java management interfaces (java.lang.management).

Field Summary

Fields inherited from class xtwm.plugins.PluginWidget

app, loadOnStartup, pluginEnabled

Constructor Summary

Constructors

Constructor	Description
SystemMonitor()	No-argument constructor that is intended only for use by XTWMApplication.loadPlugin().
SystemMonitor(TWidget parent)	Public constructor.

Method Summary

Modifier and Type	Method	Description
void	draw()	Draw the values obtained from the Java management interfaces.
java.lang.String	getApplicationCommand()	Get the command line to execute if this is an "Application" plugin.
java.lang.String	getMenuMnemonic()	Get the translated menu label for this plugin.
java.lang.String	getPluginDescription()	Get the translated full description for this plugin.
java.lang.String	getPluginName()	Get the translated short name for this plugin.
TWidget	getPluginSettingsEditor(TWidget parent)	Get an interface for editing the plugin settings.
int	getPreferredHeight()	Get the desired height when rendering this plugin.
int	getPreferredWidth()	Get the desired width when rendering this plugin.
java.lang.String	getWindowTitle()	Get the translated window title for this plugin.
void	initialize(XTWMApplication app)	Initialize the plugin.
boolean	isApplication()	See if this is an "Application" plugin.
boolean	isOnAllDesktops()	Whether or not this plugin should be on all desktops when loaded as a widget at startup.
boolean	isResizable()	Check if widget should be in a resizable window.
boolean	isWidget()	See if this is a "Widget" plugin.

Methods inherited from class xtwm.plugins.PluginWidget

closeFromMenu, getOption, getOption, getWindow, isLoadOnStartup, isPluginEnabled, isWindowed, makeDataFile, onMenu, setLoadOnStartup, setOption, setPluginEnabled

Methods inherited from class jexer.TWidget

activate, 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, close, compareTo, doRepaint, drawBox, drawBox, drawBoxShadow, drawChildren, fileOpenBox, fileOpenBox, fileOpenBox, fileOpenBox, fileSaveBox, getAbsoluteX, getAbsoluteY, getActiveChild, getApplication, getAttrXY, getChildren, getClipboard, getCursorAbsoluteX, getCursorAbsoluteY, getCursorX, getCursorY, getHeight, getLayoutManager, getParent, getScreen, getTheme, getWidth, getWindow, getX, getY, handleEvent, hasChild, hLineXY, inputBox, inputBox, inputBox, isAbsoluteActive, isActive, isCursorVisible, isDrawable, isEchoKeystrokes, isEnabled, isVisible, messageBox, messageBox, mouseWouldHit, onCommand, onIdle, onKeypress, onMouseDoubleClick, onMouseDown, onMouseMotion, onMouseUp, onResize, putAll, putAttrXY, putAttrXY, putCharXY, putCharXY, putCharXY, putStringXY, putStringXY, remove, remove, remove, remove, removeAll, resetTabOrder, setActive, setCursorVisible, setCursorX, setCursorY, setDimensions, setEchoKeystrokes, setEchoKeystrokes, setEnabled, setHeight, setLayoutManager, setParent, setupForTWindow, setVisible, setWidth, setWindow, setX, setY, splitHorizontal, splitVertical, switchWidget, toPrettyString, toPrettyString, toString, vLineXY

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemMonitor

public SystemMonitor(TWidget parent)

Public constructor.

Parameters:

parent - parent widget

SystemMonitor

public SystemMonitor()

No-argument constructor that is intended only for use by XTWMApplication.loadPlugin().

Method Detail

draw

public void draw()

Draw the values obtained from the Java management interfaces.

Overrides:

draw in class TWidget

initialize

public void initialize(XTWMApplication app)

Initialize the plugin. Since plugins are required to have a no-argument constructor, this method is called to provide a hook for the plugin to perform initialization. Subclasses that override initialize should call super.initialize() to set the XTWMApplication reference.

Overrides:

initialize in class PluginWidget

Parameters:

app - the application that will be using this plugin

getMenuMnemonic

public java.lang.String getMenuMnemonic()

Get the translated menu label for this plugin.

Specified by:

getMenuMnemonic in class PluginWidget

Returns:

a mnemonic string that will be populated in the menu

getPluginName

public java.lang.String getPluginName()

Get the translated short name for this plugin.

Specified by:

getPluginName in class PluginWidget

Returns:

a short name, e.g. "SystemMonitor"

getPluginDescription

public java.lang.String getPluginDescription()

Get the translated full description for this plugin.

Specified by:

getPluginDescription in class PluginWidget

Returns:

a short name, e.g. "A simple monitor for the JVM."

isApplication

public boolean isApplication()

See if this is an "Application" plugin.

Specified by:

isApplication in class PluginWidget

Returns:

true if this plugin should be listed the Application | Programs menu

getApplicationCommand

public java.lang.String getApplicationCommand()

Get the command line to execute if this is an "Application" plugin.

Specified by:

getApplicationCommand in class PluginWidget

Returns:

a command line

isWidget

public boolean isWidget()

See if this is a "Widget" plugin.

Specified by:

isWidget in class PluginWidget

Returns:

true if this plugin should be available in the Application | Widgets meny and the Panel | "Switch to" dialog

getWindowTitle

public java.lang.String getWindowTitle()

Get the translated window title for this plugin.

Specified by:

getWindowTitle in class PluginWidget

Returns:

the title for the window when this widget is opened in the Application | Widgets menu, or null if this widget should have no title for its window.

isOnAllDesktops

public boolean isOnAllDesktops()

Whether or not this plugin should be on all desktops when loaded as a widget at startup.

Overrides:

isOnAllDesktops in class PluginWidget

Returns:

true if this plugin should be on all desktops

getPluginSettingsEditor

public TWidget getPluginSettingsEditor(TWidget parent)

Get an interface for editing the plugin settings.

Overrides:

getPluginSettingsEditor in class PluginWidget

Parameters:

parent - parent widget

Returns:

a widget that has settings

getPreferredWidth

public int getPreferredWidth()

Get the desired width when rendering this plugin.

Specified by:

getPreferredWidth in class PluginWidget

Returns:

the width

getPreferredHeight

public int getPreferredHeight()

Get the desired height when rendering this plugin.

Specified by:

getPreferredHeight in class PluginWidget

Returns:

the height

isResizable

public boolean isResizable()

Check if widget should be in a resizable window.

Overrides:

isResizable in class PluginWidget

Returns:

true if the widget should be resizable when in a window