JDK8/Java8源码在线阅读
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package java.awt.event;
import java.awt.Component;
import java.awt.GraphicsEnvironment;
import java.awt.Toolkit;
import java.io.IOException;
import java.io.ObjectInputStream;
import sun.awt.AWTAccessor;
/**
* An event which indicates that a keystroke occurred in a component.
* <p>
* This low-level event is generated by a component object (such as a text
* field) when a key is pressed, released, or typed.
* The event is passed to every <code>KeyListener</code>
* or <code>KeyAdapter</code> object which registered to receive such
* events using the component's <code>addKeyListener</code> method.
* (<code>KeyAdapter</code> objects implement the
* <code>KeyListener</code> interface.) Each such listener object
* gets this <code>KeyEvent</code> when the event occurs.
* <p>
* <em>"Key typed" events</em> are higher-level and generally do not depend on
* the platform or keyboard layout. They are generated when a Unicode character
* is entered, and are the preferred way to find out about character input.
* In the simplest case, a key typed event is produced by a single key press
* (e.g., 'a'). Often, however, characters are produced by series of key
* presses (e.g., 'shift' + 'a'), and the mapping from key pressed events to
* key typed events may be many-to-one or many-to-many. Key releases are not
* usually necessary to generate a key typed event, but there are some cases
* where the key typed event is not generated until a key is released (e.g.,
* entering ASCII sequences via the Alt-Numpad method in Windows).
* No key typed events are generated for keys that don't generate Unicode
* characters (e.g., action keys, modifier keys, etc.).
* <p>
* The getKeyChar method always returns a valid Unicode character or
* CHAR_UNDEFINED. Character input is reported by KEY_TYPED events:
* KEY_PRESSED and KEY_RELEASED events are not necessarily associated
* with character input. Therefore, the result of the getKeyChar method
* is guaranteed to be meaningful only for KEY_TYPED events.
* <p>
* For key pressed and key released events, the getKeyCode method returns
* the event's keyCode. For key typed events, the getKeyCode method
* always returns {@code VK_UNDEFINED}. The {@code getExtendedKeyCode} method
* may also be used with many international keyboard layouts.
*
* <p>
* <em>"Key pressed" and "key released" events</em> are lower-level and depend
* on the platform and keyboard layout. They are generated whenever a key is
* pressed or released, and are the only way to find out about keys that don't
* generate character input (e.g., action keys, modifier keys, etc.). The key
* being pressed or released is indicated by the {@code getKeyCode} and {@code getExtendedKeyCode}
* methods, which return a virtual key code.
*
* <p>
* <em>Virtual key codes</em> are used to report which keyboard key has
* been pressed, rather than a character generated by the combination
* of one or more keystrokes (such as "A", which comes from shift and "a").
*
* <p>
* For example, pressing the Shift key will cause a KEY_PRESSED event
* with a VK_SHIFT keyCode, while pressing the 'a' key will result in
* a VK_A keyCode. After the 'a' key is released, a KEY_RELEASED event
* will be fired with VK_A. Separately, a KEY_TYPED event with a keyChar
* value of 'A' is generated.
*
* <p>
* Pressing and releasing a key on the keyboard results in the generating
* the following key events (in order):
* <PRE>
* {@code KEY_PRESSED}
* {@code KEY_TYPED} (is only generated if a valid Unicode character could be generated.)
* {@code KEY_RELEASED}
* </PRE>
*
* But in some cases (e.g. auto-repeat or input method is activated) the order
* could be different (and platform dependent).
*
* <p>
* Notes:
* <ul>
* <li>Key combinations which do not result in Unicode characters, such as action
* keys like F1 and the HELP key, do not generate KEY_TYPED events.
* <li>Not all keyboards or systems are capable of generating all
* virtual key codes. No attempt is made in Java to generate these keys
* artificially.
* <li>Virtual key codes do not identify a physical key: they depend on the
* platform and keyboard layout. For example, the key that generates VK_Q
* when using a U.S. keyboard layout will generate VK_A when using a French
* keyboard layout.
* <li>The key that generates {@code VK_Q} when using a U.S. keyboard layout also
* generates a unique code for Russian or Hebrew layout. There is no a
* {@code VK_} constant for these and many other codes in various layouts. These codes
* may be obtained by using {@code getExtendedKeyCode} and are used whenever
* a {@code VK_} constant is used.
* <li>Not all characters have a keycode associated with them. For example,
* there is no keycode for the question mark because there is no keyboard
* for which it appears on the primary layer.
* <li>In order to support the platform-independent handling of action keys,
* the Java platform uses a few additional virtual key constants for functions
* that would otherwise have to be recognized by interpreting virtual key codes
* and modifiers. For example, for Japanese Windows keyboards, VK_ALL_CANDIDATES
* is returned instead of VK_CONVERT with the ALT modifier.
* <li>As specified in <a href="../doc-files/FocusSpec.html">Focus Specification</a>
* key events are dispatched to the focus owner by default.
* </ul>
*
* <p>
* WARNING: Aside from those keys that are defined by the Java language
* (VK_ENTER, VK_BACK_SPACE, and VK_TAB), do not rely on the values of the VK_
* constants. Sun reserves the right to change these values as needed
* to accommodate a wider range of keyboards in the future.
* <p>
* An unspecified behavior will be caused if the {@code id} parameter
* of any particular {@code KeyEvent} instance is not
* in the range from {@code KEY_FIRST} to {@code KEY_LAST}.
*
* @author Carl Quinn
* @author Amy Fowler
* @author Norbert Lindenberg
*
* @see KeyAdapter
* @see KeyListener
* @see <a href="https://docs.oracle.com/javase/tutorial/uiswing/events/keylistener.html">Tutorial: Writing a Key Listener</a>
*
* @since 1.1
*/
public class KeyEvent extends InputEvent {
/**
* Stores the state of native event dispatching system
* - true, if when the event was created event proxying
* mechanism was active
* - false, if it was inactive
* Used in Component.dispatchEventImpl to correctly dispatch
* events when proxy is active
*/
private boolean isProxyActive = false;
/**
* The first number in the range of ids used for key events.
*/
public static final int KEY_FIRST = 400;
/**
* The last number in the range of ids used for key events.
*/
public static final int KEY_LAST = 402;
/**
* The "key typed" event. This event is generated when a character is
* entered. In the simplest case, it is produced by a single key press.
* Often, however, characters are produced by series of key presses, and
* the mapping from key pressed events to key typed events may be
* many-to-one or many-to-many.
*/
public static final int KEY_TYPED = KEY_FIRST;
/**
* The "key pressed" event. This event is generated when a key
* is pushed down.
*/
public static final int KEY_PRESSED = 1 + KEY_FIRST; //Event.KEY_PRESS
/**
* The "key released" event. This event is generated when a key
* is let up.
*/
public static final int KEY_RELEASED = 2 + KEY_FIRST; //Event.KEY_RELEASE
/* Virtual key codes. */
public static final int VK_ENTER = '\n';
public static final int VK_BACK_SPACE = '\b';
public static final int VK_TAB = '\t';
public static final int VK_CANCEL = 0x03;
public static final int VK_CLEAR = 0x0C;
public static final int VK_SHIFT = 0x10;
public static final int VK_CONTROL = 0x11;
public static final int VK_ALT = 0x12;
public static final int VK_PAUSE = 0x13;
public static final int VK_CAPS_LOCK = 0x14;
public static final int VK_ESCAPE = 0x1B;
public static final int VK_SPACE = 0x20;
public static final int VK_PAGE_UP = 0x21;
public static final int VK_PAGE_DOWN = 0x22;
public static final int VK_END = 0x23;
public static final int VK_HOME = 0x24;
/**
* Constant for the non-numpad <b>left</b> arrow key.
* @see #VK_KP_LEFT
*/
public static final int VK_LEFT = 0x25;
/**
* Constant for the non-numpad <b>up</b> arrow key.
* @see #VK_KP_UP
*/
public static final int VK_UP = 0x26;
/**
* Constant for the non-numpad <b>right</b> arrow key.
* @see #VK_KP_RIGHT
*/
public static final int VK_RIGHT = 0x27;
/**
* Constant for the non-numpad <b>down</b> arrow key.
* @see #VK_KP_DOWN
*/
public static final int VK_DOWN = 0x28;
/**
* Constant for the comma key, ","
*/
public static final int VK_COMMA = 0x2C;
/**
* Constant for the minus key, "-"
* @since 1.2
*/
public static final int VK_MINUS = 0x2D;
/**
* Constant for the period key, "."
*/
public static final int VK_PERIOD = 0x2E;
/**
* Constant for the forward slash key, "/"
*/
public static final int VK_SLASH = 0x2F;
/** VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
public static final int VK_0 = 0x30;
public static final int VK_1 = 0x31;
public static final int VK_2 = 0x32;
public static final int VK_3 = 0x33;
public static final int VK_4 = 0x34;
public static final int VK_5 = 0x35;
public static final int VK_6 = 0x36;
public static final int VK_7 = 0x37;
public static final int VK_8 = 0x38;
public static final int VK_9 = 0x39;
/**
* Constant for the semicolon key, ";"
*/
public static final int VK_SEMICOLON = 0x3B;
/**
* Constant for the equals key, "="
*/
public static final int VK_EQUALS = 0x3D;
/** VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
public static final int VK_A = 0x41;
public static final int VK_B = 0x42;
public static final int VK_C = 0x43;
public static final int VK_D = 0x44;
public static final int VK_E = 0x45;
public static final int VK_F = 0x46;
public static final int VK_G = 0x47;
public static final int VK_H = 0x48;
public static final int VK_I = 0x49;
public static final int VK_J = 0x4A;
public static final int VK_K = 0x4B;
public static final int VK_L = 0x4C;
public static final int VK_M = 0x4D;
public static final int VK_N = 0x4E;
public static final int VK_O = 0x4F;
public static final int VK_P = 0x50;
public static final int VK_Q = 0x51;
public static final int VK_R = 0x52;
public static final int VK_S = 0x53;
public static final int VK_T = 0x54;
public static final int VK_U = 0x55;
public static final int VK_V = 0x56;
public static final int VK_W = 0x57;
public static final int VK_X = 0x58;
public static final int VK_Y = 0x59;
public static final int VK_Z = 0x5A;
/**
* Constant for the open bracket key, "["
*/
public static final int VK_OPEN_BRACKET = 0x5B;
/**
* Constant for the back slash key, "\"
*/
public static final int VK_BACK_SLASH = 0x5C;
/**
* Constant for the close bracket key, "]"
*/
public static final int VK_CLOSE_BRACKET = 0x5D;
public static final int VK_NUMPAD0 = 0x60;
public static final int VK_NUMPAD1 = 0x61;
public static final int VK_NUMPAD2 = 0x62;
public static final int VK_NUMPAD3 = 0x63;
public static final int VK_NUMPAD4 = 0x64;
public static final int VK_NUMPAD5 = 0x65;
public static final int VK_NUMPAD6 = 0x66;
public static final int VK_NUMPAD7 = 0x67;
public static final int VK_NUMPAD8 = 0x68;
public static final int VK_NUMPAD9 = 0x69;
public static final int VK_MULTIPLY = 0x6A;
public static final int VK_ADD = 0x6B;
/**
* This constant is obsolete, and is included only for backwards
* compatibility.
* @see #VK_SEPARATOR
*/
public static final int VK_SEPARATER = 0x6C;
/**
* Constant for the Numpad Separator key.
* @since 1.4
*/
public static final int VK_SEPARATOR = VK_SEPARATER;
public static final int VK_SUBTRACT = 0x6D;
public static final int VK_DECIMAL = 0x6E;
public static final int VK_DIVIDE = 0x6F;
public static final int VK_DELETE = 0x7F; /* ASCII DEL */
public static final int VK_NUM_LOCK = 0x90;
public static final int VK_SCROLL_LOCK = 0x91;
/** Constant for the F1 function key. */
public static final int VK_F1 = 0x70;
/** Constant for the F2 function key. */
public static final int VK_F2 = 0x71;
/** Constant for the F3 function key. */
public static final int VK_F3 = 0x72;
/** Constant for the F4 function key. */
public static final int VK_F4 = 0x73;
/** Constant for the F5 function key. */
public static final int VK_F5 = 0x74;
/** Constant for the F6 function key. */
public static final int VK_F6 = 0x75;
/** Constant for the F7 function key. */
public static final int VK_F7 = 0x76;
/** Constant for the F8 function key. */
public static final int VK_F8 = 0x77;
/** Constant for the F9 function key. */
public static final int VK_F9 = 0x78;
/** Constant for the F10 function key. */
public static final int VK_F10 = 0x79;
/** Constant for the F11 function key. */
public static final int VK_F11 = 0x7A;
/** Constant for the F12 function key. */
public static final int VK_F12 = 0x7B;
/**
* Constant for the F13 function key.
* @since 1.2
*/
/* F13 - F24 are used on IBM 3270 keyboard; use random range for constants. */
public static final int VK_F13 = 0xF000;
/**
* Constant for the F14 function key.
* @since 1.2
*/
public static final int VK_F14 = 0xF001;
/**
* Constant for the F15 function key.
* @since 1.2
*/
public static final int VK_F15 = 0xF002;
/**
* Constant for the F16 function key.
* @since 1.2
*/
public static final int VK_F16 = 0xF003;
/**
* Constant for the F17 function key.
* @since 1.2
*/
public static final int VK_F17 = 0xF004;
/**
* Constant for the F18 function key.
* @since 1.2
*/
public static final int VK_F18 = 0xF005;
/**
* Constant for the F19 function key.
* @since 1.2
*/
public static final int VK_F19 = 0xF006;
/**
* Constant for the F20 function key.
* @since 1.2
*/
public static final int VK_F20 = 0xF007;
/**
* Constant for the F21 function key.
* @since 1.2
*/
public static final int VK_F21 = 0xF008;
/**
* Constant for the F22 function key.
* @since 1.2
*/
public static final int VK_F22 = 0xF009;
/**
* Constant for the F23 function key.
* @since 1.2
*/
public static final int VK_F23 = 0xF00A;
/**
* Constant for the F24 function key.
* @since 1.2
*/
public static final int VK_F24 = 0xF00B;
public static final int VK_PRINTSCREEN = 0x9A;
public static final int VK_INSERT = 0x9B;
public static final int VK_HELP = 0x9C;
public static final int VK_META = 0x9D;
public static final int VK_BACK_QUOTE = 0xC0;
public static final int VK_QUOTE = 0xDE;
/**
* Constant for the numeric keypad <b>up</b> arrow key.
* @see #VK_UP
* @since 1.2
*/
public static final int VK_KP_UP = 0xE0;
/**
* Constant for the numeric keypad <b>down</b> arrow key.
* @see #VK_DOWN
* @since 1.2
*/
public static final int VK_KP_DOWN = 0xE1;
/**
* Constant for the numeric keypad <b>left</b> arrow key.
* @see #VK_LEFT
* @since 1.2
*/
public static final int VK_KP_LEFT = 0xE2;
/**
* Constant for the numeric keypad <b>right</b> arrow key.
* @see #VK_RIGHT
* @since 1.2
*/
public static final int VK_KP_RIGHT = 0xE3;
/* For European keyboards */
/** @since 1.2 */
public static final int VK_DEAD_GRAVE = 0x80;
/** @since 1.2 */
public static final int VK_DEAD_ACUTE = 0x81;
/** @since 1.2 */
public static final int VK_DEAD_CIRCUMFLEX = 0x82;
/** @since 1.2 */
public static final int VK_DEAD_TILDE = 0x83;
/** @since 1.2 */
public static final int VK_DEAD_MACRON = 0x84;
/** @since 1.2 */
public static final int VK_DEAD_BREVE = 0x85;
/** @since 1.2 */
public static final int VK_DEAD_ABOVEDOT = 0x86;
/** @since 1.2 */
public static final int VK_DEAD_DIAERESIS = 0x87;
/** @since 1.2 */
public static final int VK_DEAD_ABOVERING = 0x88;
/** @since 1.2 */
public static final int VK_DEAD_DOUBLEACUTE = 0x89;
/** @since 1.2 */
public static final int VK_DEAD_CARON = 0x8a;
/** @since 1.2 */
public static final int VK_DEAD_CEDILLA = 0x8b;
/** @since 1.2 */
public static final int VK_DEAD_OGONEK = 0x8c;
/** @since 1.2 */
public static final int VK_DEAD_IOTA = 0x8d;
/** @since 1.2 */
public static final int VK_DEAD_VOICED_SOUND = 0x8e;
/** @since 1.2 */
public static final int VK_DEAD_SEMIVOICED_SOUND = 0x8f;
/** @since 1.2 */
public static final int VK_AMPERSAND = 0x96;
/** @since 1.2 */
public static final int VK_ASTERISK = 0x97;
/** @since 1.2 */
public static final int VK_QUOTEDBL = 0x98;
/** @since 1.2 */
public static final int VK_LESS = 0x99;
/** @since 1.2 */
public static final int VK_GREATER = 0xa0;
/** @since 1.2 */
public static final int VK_BRACELEFT = 0xa1;
/** @since 1.2 */
public static final int VK_BRACERIGHT = 0xa2;
/**
* Constant for the "@" key.
* @since 1.2
*/
public static final int VK_AT = 0x0200;
/**
* Constant for the ":" key.
* @since 1.2
*/
public static final int VK_COLON = 0x0201;
/**
* Constant for the "^" key.
* @since 1.2
*/
public static final int VK_CIRCUMFLEX = 0x0202;
/**
* Constant for the "$" key.
* @since 1.2
*/
public static final int VK_DOLLAR = 0x0203;
/**
* Constant for the Euro currency sign key.
* @since 1.2
*/
public static final int VK_EURO_SIGN = 0x0204;
/**
* Constant for the "!" key.
* @since 1.2
*/
public static final int VK_EXCLAMATION_MARK = 0x0205;
/**
* Constant for the inverted exclamation mark key.
* @since 1.2
*/
public static final int VK_INVERTED_EXCLAMATION_MARK = 0x0206;
/**
* Constant for the "(" key.
* @since 1.2
*/
public static final int VK_LEFT_PARENTHESIS = 0x0207;
/**
* Constant for the "#" key.
* @since 1.2
*/
public static final int VK_NUMBER_SIGN = 0x0208;
/**
* Constant for the "+" key.
* @since 1.2
*/
public static final int VK_PLUS = 0x0209;
/**
* Constant for the ")" key.
* @since 1.2
*/
public static final int VK_RIGHT_PARENTHESIS = 0x020A;
/**
* Constant for the "_" key.
* @since 1.2
*/
public static final int VK_UNDERSCORE = 0x020B;
/**
* Constant for the Microsoft Windows "Windows" key.
* It is used for both the left and right version of the key.
* @see #getKeyLocation()
* @since 1.5
*/
public static final int VK_WINDOWS = 0x020C;
/**
* Constant for the Microsoft Windows Context Menu key.
* @since 1.5
*/
public static final int VK_CONTEXT_MENU = 0x020D;
/* for input method support on Asian Keyboards */
/* not clear what this means - listed in Microsoft Windows API */
public static final int VK_FINAL = 0x0018;
/** Constant for the Convert function key. */
/* Japanese PC 106 keyboard, Japanese Solaris keyboard: henkan */
public static final int VK_CONVERT = 0x001C;
/** Constant for the Don't Convert function key. */
/* Japanese PC 106 keyboard: muhenkan */
public static final int VK_NONCONVERT = 0x001D;
/** Constant for the Accept or Commit function key. */
/* Japanese Solaris keyboard: kakutei */
public static final int VK_ACCEPT = 0x001E;
/* not clear what this means - listed in Microsoft Windows API */
public static final int VK_MODECHANGE = 0x001F;
/* replaced by VK_KANA_LOCK for Microsoft Windows and Solaris;
might still be used on other platforms */
public static final int VK_KANA = 0x0015;
/* replaced by VK_INPUT_METHOD_ON_OFF for Microsoft Windows and Solaris;
might still be used for other platforms */
public static final int VK_KANJI = 0x0019;
/**
* Constant for the Alphanumeric function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard: eisuu */
public static final int VK_ALPHANUMERIC = 0x00F0;
/**
* Constant for the Katakana function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard: katakana */
public static final int VK_KATAKANA = 0x00F1;
/**
* Constant for the Hiragana function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard: hiragana */
public static final int VK_HIRAGANA = 0x00F2;
/**
* Constant for the Full-Width Characters function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard: zenkaku */
public static final int VK_FULL_WIDTH = 0x00F3;
/**
* Constant for the Half-Width Characters function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard: hankaku */
public static final int VK_HALF_WIDTH = 0x00F4;
/**
* Constant for the Roman Characters function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard: roumaji */
public static final int VK_ROMAN_CHARACTERS = 0x00F5;
/**
* Constant for the All Candidates function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard - VK_CONVERT + ALT: zenkouho */
public static final int VK_ALL_CANDIDATES = 0x0100;
/**
* Constant for the Previous Candidate function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard - VK_CONVERT + SHIFT: maekouho */
public static final int VK_PREVIOUS_CANDIDATE = 0x0101;
/**
* Constant for the Code Input function key.
* @since 1.2
*/
/* Japanese PC 106 keyboard - VK_ALPHANUMERIC + ALT: kanji bangou */
public static final int VK_CODE_INPUT = 0x0102;
/**
* Constant for the Japanese-Katakana function key.
* This key switches to a Japanese input method and selects its Katakana input mode.
* @since 1.2
*/
/* Japanese Macintosh keyboard - VK_JAPANESE_HIRAGANA + SHIFT */
public static final int VK_JAPANESE_KATAKANA = 0x0103;
/**
* Constant for the Japanese-Hiragana function key.
* This key switches to a Japanese input method and selects its Hiragana input mode.
* @since 1.2
*/
/* Japanese Macintosh keyboard */
public static final int VK_JAPANESE_HIRAGANA = 0x0104;
/**
* Constant for the Japanese-Roman function key.
* This key switches to a Japanese input method and selects its Roman-Direct input mode.
* @since 1.2
*/
/* Japanese Macintosh keyboard */
public static final int VK_JAPANESE_ROMAN = 0x0105;
/**
* Constant for the locking Kana function key.
* This key locks the keyboard into a Kana layout.
* @since 1.3
*/
/* Japanese PC 106 keyboard with special Windows driver - eisuu + Control; Japanese Solaris keyboard: kana */
public static final int VK_KANA_LOCK = 0x0106;
/**
* Constant for the input method on/off key.
* @since 1.3
*/
/* Japanese PC 106 keyboard: kanji. Japanese Solaris keyboard: nihongo */
public static final int VK_INPUT_METHOD_ON_OFF = 0x0107;
/* for Sun keyboards */
/** @since 1.2 */
public static final int VK_CUT = 0xFFD1;
/** @since 1.2 */
public static final int VK_COPY = 0xFFCD;
/** @since 1.2 */
public static final int VK_PASTE = 0xFFCF;
/** @since 1.2 */
public static final int VK_UNDO = 0xFFCB;
/** @since 1.2 */
public static final int VK_AGAIN = 0xFFC9;
/** @since 1.2 */
public static final int VK_FIND = 0xFFD0;
/** @since 1.2 */
public static final int VK_PROPS = 0xFFCA;
/** @since 1.2 */
public static final int VK_STOP = 0xFFC8;
/**
* Constant for the Compose function key.
* @since 1.2
*/
public static final int VK_COMPOSE = 0xFF20;
/**
* Constant for the AltGraph function key.
* @since 1.2
*/
public static final int VK_ALT_GRAPH = 0xFF7E;
/**
* Constant for the Begin key.
* @since 1.5
*/
public static final int VK_BEGIN = 0xFF58;
/**
* This value is used to indicate that the keyCode is unknown.
* KEY_TYPED events do not have a keyCode value; this value
* is used instead.
*/
public static final int VK_UNDEFINED = 0x0;
/**
* KEY_PRESSED and KEY_RELEASED events which do not map to a
* valid Unicode character use this for the keyChar value.
*/
public static final char CHAR_UNDEFINED = 0xFFFF;
/**
* A constant indicating that the keyLocation is indeterminate
* or not relevant.
* <code>KEY_TYPED</code> events do not have a keyLocation; this value
* is used instead.
* @since 1.4
*/
public static final int KEY_LOCATION_UNKNOWN = 0;
/**
* A constant indicating that the key pressed or released
* is not distinguished as the left or right version of a key,
* and did not originate on the numeric keypad (or did not
* originate with a virtual key corresponding to the numeric
* keypad).
* @since 1.4
*/
public static final int KEY_LOCATION_STANDARD = 1;
/**
* A constant indicating that the key pressed or released is in
* the left key location (there is more than one possible location
* for this key). Example: the left shift key.
* @since 1.4
*/
public static final int KEY_LOCATION_LEFT = 2;
/**
* A constant indicating that the key pressed or released is in
* the right key location (there is more than one possible location
* for this key). Example: the right shift key.
* @since 1.4
*/
public static final int KEY_LOCATION_RIGHT = 3;
/**
* A constant indicating that the key event originated on the
* numeric keypad or with a virtual key corresponding to the
* numeric keypad.
* @since 1.4
*/
public static final int KEY_LOCATION_NUMPAD = 4;
/**
* The unique value assigned to each of the keys on the
* keyboard. There is a common set of key codes that
* can be fired by most keyboards.
* The symbolic name for a key code should be used rather
* than the code value itself.
*
* @serial
* @see #getKeyCode()
* @see #setKeyCode(int)
*/
int keyCode;
/**
* <code>keyChar</code> is a valid unicode character
* that is fired by a key or a key combination on
* a keyboard.
*
* @serial
* @see #getKeyChar()
* @see #setKeyChar(char)
*/
char keyChar;
/**
* The location of the key on the keyboard.
*
* Some keys occur more than once on a keyboard, e.g. the left and
* right shift keys. Additionally, some keys occur on the numeric
* keypad. This variable is used to distinguish such keys.
*
* The only legal values are <code>KEY_LOCATION_UNKNOWN</code>,
* <code>KEY_LOCATION_STANDARD</code>, <code>KEY_LOCATION_LEFT</code>,
* <code>KEY_LOCATION_RIGHT</code>, and <code>KEY_LOCATION_NUMPAD</code>.
*
* @serial
* @see #getKeyLocation()
*/
int keyLocation;
//set from native code.
private transient long rawCode = 0;
private transient long primaryLevelUnicode = 0;
private transient long scancode = 0; // for MS Windows only
private transient long extendedKeyCode = 0;
/*
* JDK 1.1 serialVersionUID
*/
private static final long serialVersionUID = -2352130953028126954L;
static {
/* ensure that the necessary native libraries are loaded */
NativeLibLoader.loadLibraries();
if (!GraphicsEnvironment.isHeadless()) {
initIDs();
}
AWTAccessor.setKeyEventAccessor(
new AWTAccessor.KeyEventAccessor() {
public void setRawCode(KeyEvent ev, long rawCode) {
ev.rawCode = rawCode;
}
public void setPrimaryLevelUnicode(KeyEvent ev,
long primaryLevelUnicode) {
ev.primaryLevelUnicode = primaryLevelUnicode;
}
public void setExtendedKeyCode(KeyEvent ev,
long extendedKeyCode) {
ev.extendedKeyCode = extendedKeyCode;
}
public Component getOriginalSource( KeyEvent ev ) {
return ev.originalSource;
}
});
}
/**
* Initialize JNI field and method IDs for fields that may be
* accessed from C.
*/
private static native void initIDs();
/**
* The original event source.
*
* Event source can be changed during processing, but in some cases
* we need to be able to obtain original source.
*/
private Component originalSource;
private KeyEvent(Component source, int id, long when, int modifiers,
int keyCode, char keyChar, int keyLocation, boolean isProxyActive) {
this(source, id, when, modifiers, keyCode, keyChar, keyLocation);
this.isProxyActive = isProxyActive;
}
/**
* Constructs a <code>KeyEvent</code> object.
* <p>This method throws an
* <code>IllegalArgumentException</code> if <code>source</code>
* is <code>null</code>.
*
* @param source The <code>Component</code> that originated the event
* @param id An integer indicating the type of event.
* For information on allowable values, see
* the class description for {@link KeyEvent}
* @param when A long integer that specifies the time the event
* occurred.
* Passing negative or zero value
* is not recommended
* @param modifiers The modifier keys down during event (shift, ctrl,
* alt, meta).
* Passing negative value
* is not recommended.
* Zero value means that no modifiers were passed.
* Use either an extended _DOWN_MASK or old _MASK modifiers,
* however do not mix models in the one event.
* The extended modifiers are preferred for using
* @param keyCode The integer code for an actual key, or VK_UNDEFINED
* (for a key-typed event)
* @param keyChar The Unicode character generated by this event, or
* CHAR_UNDEFINED (for key-pressed and key-released
* events which do not map to a valid Unicode character)
* @param keyLocation Identifies the key location. The only legal
* values are <code>KEY_LOCATION_UNKNOWN</code>,
* <code>KEY_LOCATION_STANDARD</code>, <code>KEY_LOCATION_LEFT</code>,
* <code>KEY_LOCATION_RIGHT</code>, and <code>KEY_LOCATION_NUMPAD</code>.
* @throws IllegalArgumentException
* if <code>id</code> is <code>KEY_TYPED</code> and
* <code>keyChar</code> is <code>CHAR_UNDEFINED</code>;
* or if <code>id</code> is <code>KEY_TYPED</code> and
* <code>keyCode</code> is not <code>VK_UNDEFINED</code>;
* or if <code>id</code> is <code>KEY_TYPED</code> and
* <code>keyLocation</code> is not <code>KEY_LOCATION_UNKNOWN</code>;
* or if <code>keyLocation</code> is not one of the legal
* values enumerated above.
* @throws IllegalArgumentException if <code>source</code> is null
* @see #getSource()
* @see #getID()
* @see #getWhen()
* @see #getModifiers()
* @see #getKeyCode()
* @see #getKeyChar()
* @see #getKeyLocation()
* @since 1.4
*/
public KeyEvent(Component source, int id, long when, int modifiers,
int keyCode, char keyChar, int keyLocation) {
super(source, id, when, modifiers);
if (id == KEY_TYPED) {
if (keyChar == CHAR_UNDEFINED) {
throw new IllegalArgumentException("invalid keyChar");
}
if (keyCode != VK_UNDEFINED) {
throw new IllegalArgumentException("invalid keyCode");
}
if (keyLocation != KEY_LOCATION_UNKNOWN) {
throw new IllegalArgumentException("invalid keyLocation");
}
}
this.keyCode = keyCode;
this.keyChar = keyChar;
if ((keyLocation < KEY_LOCATION_UNKNOWN) ||
(keyLocation > KEY_LOCATION_NUMPAD)) {
throw new IllegalArgumentException("invalid keyLocation");
}
this.keyLocation = keyLocation;
if ((getModifiers() != 0) && (getModifiersEx() == 0)) {
setNewModifiers();
} else if ((getModifiers() == 0) && (getModifiersEx() != 0)) {
setOldModifiers();
}
originalSource = source;
}
/**
* Constructs a <code>KeyEvent</code> object.
* <p> This method throws an
* <code>IllegalArgumentException</code> if <code>source</code>
* is <code>null</code>.
*
* @param source The <code>Component</code> that originated the event
* @param id An integer indicating the type of event.
* For information on allowable values, see
* the class description for {@link KeyEvent}
* @param when A long integer that specifies the time the event
* occurred.
* Passing negative or zero value
* is not recommended
* @param modifiers The modifier keys down during event (shift, ctrl,
* alt, meta).
* Passing negative value
* is not recommended.
* Zero value means that no modifiers were passed.
* Use either an extended _DOWN_MASK or old _MASK modifiers,
* however do not mix models in the one event.
* The extended modifiers are preferred for using
* @param keyCode The integer code for an actual key, or VK_UNDEFINED
* (for a key-typed event)
* @param keyChar The Unicode character generated by this event, or
* CHAR_UNDEFINED (for key-pressed and key-released
* events which do not map to a valid Unicode character)
* @throws IllegalArgumentException if <code>id</code> is
* <code>KEY_TYPED</code> and <code>keyChar</code> is
* <code>CHAR_UNDEFINED</code>; or if <code>id</code> is
* <code>KEY_TYPED</code> and <code>keyCode</code> is not
* <code>VK_UNDEFINED</code>
* @throws IllegalArgumentException if <code>source</code> is null
* @see #getSource()
* @see #getID()
* @see #getWhen()
* @see #getModifiers()
* @see #getKeyCode()
* @see #getKeyChar()
*/
public KeyEvent(Component source, int id, long when, int modifiers,
int keyCode, char keyChar) {
this(source, id, when, modifiers, keyCode, keyChar,
KEY_LOCATION_UNKNOWN);
}
/**
* @deprecated as of JDK1.1
*/
@Deprecated
public KeyEvent(Component source, int id, long when, int modifiers,
int keyCode) {
this(source, id, when, modifiers, keyCode, (char)keyCode);
}
/**
* Returns the integer keyCode associated with the key in this event.
*
* @return the integer code for an actual key on the keyboard.
* (For <code>KEY_TYPED</code> events, the keyCode is
* <code>VK_UNDEFINED</code>.)
*/
public int getKeyCode() {
return keyCode;
}
/**
* Set the keyCode value to indicate a physical key.
*
* @param keyCode an integer corresponding to an actual key on the keyboard.
*/
public void setKeyCode(int keyCode) {
this.keyCode = keyCode;
}
/**
* Returns the character associated with the key in this event.
* For example, the <code>KEY_TYPED</code> event for shift + "a"
* returns the value for "A".
* <p>
* <code>KEY_PRESSED</code> and <code>KEY_RELEASED</code> events
* are not intended for reporting of character input. Therefore,
* the values returned by this method are guaranteed to be
* meaningful only for <code>KEY_TYPED</code> events.
*
* @return the Unicode character defined for this key event.
* If no valid Unicode character exists for this key event,
* <code>CHAR_UNDEFINED</code> is returned.
*/
public char getKeyChar() {
return keyChar;
}
/**
* Set the keyChar value to indicate a logical character.
*
* @param keyChar a char corresponding to to the combination of keystrokes
* that make up this event.
*/
public void setKeyChar(char keyChar) {
this.keyChar = keyChar;
}
/**
* Set the modifiers to indicate additional keys that were held down
* (e.g. shift, ctrl, alt, meta) defined as part of InputEvent.
* <p>
* NOTE: use of this method is not recommended, because many AWT
* implementations do not recognize modifier changes. This is
* especially true for <code>KEY_TYPED</code> events where the shift
* modifier is changed.
*
* @param modifiers an integer combination of the modifier constants.
* @see InputEvent
* @deprecated as of JDK1.1.4
*/
@Deprecated
public void setModifiers(int modifiers) {
this.modifiers = modifiers;
if ((getModifiers() != 0) && (getModifiersEx() == 0)) {
setNewModifiers();
} else if ((getModifiers() == 0) && (getModifiersEx() != 0)) {
setOldModifiers();
}
}
/**
* Returns the location of the key that originated this key event.
*
* Some keys occur more than once on a keyboard, e.g. the left and
* right shift keys. Additionally, some keys occur on the numeric
* keypad. This provides a way of distinguishing such keys.
*
* @return the location of the key that was pressed or released.
* Always returns <code>KEY_LOCATION_UNKNOWN</code> for
* <code>KEY_TYPED</code> events.
* @since 1.4
*/
public int getKeyLocation() {
return keyLocation;
}
/**
* Returns a String describing the keyCode, such as "HOME", "F1" or "A".
* These strings can be localized by changing the awt.properties file.
*
* @return a string containing a text description for a physical key,
* identified by its keyCode
*/
public static String getKeyText(int keyCode) {
if (keyCode >= VK_0 && keyCode <= VK_9 ||
keyCode >= VK_A && keyCode <= VK_Z) {
return String.valueOf((char)keyCode);
}
switch(keyCode) {
case VK_ENTER: return Toolkit.getProperty("AWT.enter", "Enter");
case VK_BACK_SPACE: return Toolkit.getProperty("AWT.backSpace", "Backspace");
case VK_TAB: return Toolkit.getProperty("AWT.tab", "Tab");
case VK_CANCEL: return Toolkit.getProperty("AWT.cancel", "Cancel");
case VK_CLEAR: return Toolkit.getProperty("AWT.clear", "Clear");
case VK_COMPOSE: return Toolkit.getProperty("AWT.compose", "Compose");
case VK_PAUSE: return Toolkit.getProperty("AWT.pause", "Pause");
case VK_CAPS_LOCK: return Toolkit.getProperty("AWT.capsLock", "Caps Lock");
case VK_ESCAPE: return Toolkit.getProperty("AWT.escape", "Escape");
case VK_SPACE: return Toolkit.getProperty("AWT.space", "Space");
case VK_PAGE_UP: return Toolkit.getProperty("AWT.pgup", "Page Up");
case VK_PAGE_DOWN: return Toolkit.getProperty("AWT.pgdn", "Page Down");
case VK_END: return Toolkit.getProperty("AWT.end", "End");
case VK_HOME: return Toolkit.getProperty("AWT.home", "Home");
case VK_LEFT: return Toolkit.getProperty("AWT.left", "Left");
case VK_UP: return Toolkit.getProperty("AWT.up", "Up");
case VK_RIGHT: return Toolkit.getProperty("AWT.right", "Right");
case VK_DOWN: return Toolkit.getProperty("AWT.down", "Down");
case VK_BEGIN: return Toolkit.getProperty("AWT.begin", "Begin");
// modifiers
case VK_SHIFT: return Toolkit.getProperty("AWT.shift", "Shift");
case VK_CONTROL: return Toolkit.getProperty("AWT.control", "Control");
case VK_ALT: return Toolkit.getProperty("AWT.alt", "Alt");
case VK_META: return Toolkit.getProperty("AWT.meta", "Meta");
case VK_ALT_GRAPH: return Toolkit.getProperty("AWT.altGraph", "Alt Graph");
// punctuation
case VK_COMMA: return Toolkit.getProperty("AWT.comma", "Comma");
case VK_PERIOD: return Toolkit.getProperty("AWT.period", "Period");
case VK_SLASH: return Toolkit.getProperty("AWT.slash", "Slash");
case VK_SEMICOLON: return Toolkit.getProperty("AWT.semicolon", "Semicolon");
case VK_EQUALS: return Toolkit.getProperty("AWT.equals", "Equals");
case VK_OPEN_BRACKET: return Toolkit.getProperty("AWT.openBracket", "Open Bracket");
case VK_BACK_SLASH: return Toolkit.getProperty("AWT.backSlash", "Back Slash");
case VK_CLOSE_BRACKET: return Toolkit.getProperty("AWT.closeBracket", "Close Bracket");
// numpad numeric keys handled below
case VK_MULTIPLY: return Toolkit.getProperty("AWT.multiply", "NumPad *");
case VK_ADD: return Toolkit.getProperty("AWT.add", "NumPad +");
case VK_SEPARATOR: return Toolkit.getProperty("AWT.separator", "NumPad ,");
case VK_SUBTRACT: return Toolkit.getProperty("AWT.subtract", "NumPad -");
case VK_DECIMAL: return Toolkit.getProperty("AWT.decimal", "NumPad .");
case VK_DIVIDE: return Toolkit.getProperty("AWT.divide", "NumPad /");
case VK_DELETE: return Toolkit.getProperty("AWT.delete", "Delete");
case VK_NUM_LOCK: return Toolkit.getProperty("AWT.numLock", "Num Lock");
case VK_SCROLL_LOCK: return Toolkit.getProperty("AWT.scrollLock", "Scroll Lock");
case VK_WINDOWS: return Toolkit.getProperty("AWT.windows", "Windows");
case VK_CONTEXT_MENU: return Toolkit.getProperty("AWT.context", "Context Menu");
case VK_F1: return Toolkit.getProperty("AWT.f1", "F1");
case VK_F2: return Toolkit.getProperty("AWT.f2", "F2");
case VK_F3: return Toolkit.getProperty("AWT.f3", "F3");
case VK_F4: return Toolkit.getProperty("AWT.f4", "F4");
case VK_F5: return Toolkit.getProperty("AWT.f5", "F5");
case VK_F6: return Toolkit.getProperty("AWT.f6", "F6");
case VK_F7: return Toolkit.getProperty("AWT.f7", "F7");
case VK_F8: return Toolkit.getProperty("AWT.f8", "F8");
case VK_F9: return Toolkit.getProperty("AWT.f9", "F9");
case VK_F10: return Toolkit.getProperty("AWT.f10", "F10");
case VK_F11: return Toolkit.getProperty("AWT.f11", "F11");
case VK_F12: return Toolkit.getProperty("AWT.f12", "F12");
case VK_F13: return Toolkit.getProperty("AWT.f13", "F13");
case VK_F14: return Toolkit.getProperty("AWT.f14", "F14");
case VK_F15: return Toolkit.getProperty("AWT.f15", "F15");
case VK_F16: return Toolkit.getProperty("AWT.f16", "F16");
case VK_F17: return Toolkit.getProperty("AWT.f17", "F17");
case VK_F18: return Toolkit.getProperty("AWT.f18", "F18");
case VK_F19: return Toolkit.getProperty("AWT.f19", "F19");
case VK_F20: return Toolkit.getProperty("AWT.f20", "F20");
case VK_F21: return Toolkit.getProperty("AWT.f21", "F21");
case VK_F22: return Toolkit.getProperty("AWT.f22", "F22");
case VK_F23: return Toolkit.getProperty("AWT.f23", "F23");
case VK_F24: return Toolkit.getProperty("AWT.f24", "F24");
case VK_PRINTSCREEN: return Toolkit.getProperty("AWT.printScreen", "Print Screen");
case VK_INSERT: return Toolkit.getProperty("AWT.insert", "Insert");
case VK_HELP: return Toolkit.getProperty("AWT.help", "Help");
case VK_BACK_QUOTE: return Toolkit.getProperty("AWT.backQuote", "Back Quote");
case VK_QUOTE: return Toolkit.getProperty("AWT.quote", "Quote");
case VK_KP_UP: return Toolkit.getProperty("AWT.up", "Up");
case VK_KP_DOWN: return Toolkit.getProperty("AWT.down", "Down");
case VK_KP_LEFT: return Toolkit.getProperty("AWT.left", "Left");
case VK_KP_RIGHT: return Toolkit.getProperty("AWT.right", "Right");
case VK_DEAD_GRAVE: return Toolkit.getProperty("AWT.deadGrave", "Dead Grave");
case VK_DEAD_ACUTE: return Toolkit.getProperty("AWT.deadAcute", "Dead Acute");
case VK_DEAD_CIRCUMFLEX: return Toolkit.getProperty("AWT.deadCircumflex", "Dead Circumflex");
case VK_DEAD_TILDE: return Toolkit.getProperty("AWT.deadTilde", "Dead Tilde");
case VK_DEAD_MACRON: return Toolkit.getProperty("AWT.deadMacron", "Dead Macron");
case VK_DEAD_BREVE: return Toolkit.getProperty("AWT.deadBreve", "Dead Breve");
case VK_DEAD_ABOVEDOT: return Toolkit.getProperty("AWT.deadAboveDot", "Dead Above Dot");
case VK_DEAD_DIAERESIS: return Toolkit.getProperty("AWT.deadDiaeresis", "Dead Diaeresis");
case VK_DEAD_ABOVERING: return Toolkit.getProperty("AWT.deadAboveRing", "Dead Above Ring");
case VK_DEAD_DOUBLEACUTE: return Toolkit.getProperty("AWT.deadDoubleAcute", "Dead Double Acute");
case VK_DEAD_CARON: return Toolkit.getProperty("AWT.deadCaron", "Dead Caron");
case VK_DEAD_CEDILLA: return Toolkit.getProperty("AWT.deadCedilla", "Dead Cedilla");
case VK_DEAD_OGONEK: return Toolkit.getProperty("AWT.deadOgonek", "Dead Ogonek");
case VK_DEAD_IOTA: return Toolkit.getProperty("AWT.deadIota", "Dead Iota");
case VK_DEAD_VOICED_SOUND: return Toolkit.getProperty("AWT.deadVoicedSound", "Dead Voiced Sound");
case VK_DEAD_SEMIVOICED_SOUND: return Toolkit.getProperty("AWT.deadSemivoicedSound", "Dead Semivoiced Sound");
case VK_AMPERSAND: return Toolkit.getProperty("AWT.ampersand", "Ampersand");
case VK_ASTERISK: return Toolkit.getProperty("AWT.asterisk", "Asterisk");
case VK_QUOTEDBL: return Toolkit.getProperty("AWT.quoteDbl", "Double Quote");
case VK_LESS: return Toolkit.getProperty("AWT.Less", "Less");
case VK_GREATER: return Toolkit.getProperty("AWT.greater", "Greater");
case VK_BRACELEFT: return Toolkit.getProperty("AWT.braceLeft", "Left Brace");
case VK_BRACERIGHT: return Toolkit.getProperty("AWT.braceRight", "Right Brace");
case VK_AT: return Toolkit.getProperty("AWT.at", "At");
case VK_COLON: return Toolkit.getProperty("AWT.colon", "Colon");
case VK_CIRCUMFLEX: return Toolkit.getProperty("AWT.circumflex", "Circumflex");
case VK_DOLLAR: return Toolkit.getProperty("AWT.dollar", "Dollar");
case VK_EURO_SIGN: return Toolkit.getProperty("AWT.euro", "Euro");
case VK_EXCLAMATION_MARK: return Toolkit.getProperty("AWT.exclamationMark", "Exclamation Mark");
case VK_INVERTED_EXCLAMATION_MARK: return Toolkit.getProperty("AWT.invertedExclamationMark", "Inverted Exclamation Mark");
case VK_LEFT_PARENTHESIS: return Toolkit.getProperty("AWT.leftParenthesis", "Left Parenthesis");
case VK_NUMBER_SIGN: return Toolkit.getProperty("AWT.numberSign", "Number Sign");
case VK_MINUS: return Toolkit.getProperty("AWT.minus", "Minus");
case VK_PLUS: return Toolkit.getProperty("AWT.plus", "Plus");
case VK_RIGHT_PARENTHESIS: return Toolkit.getProperty("AWT.rightParenthesis", "Right Parenthesis");
case VK_UNDERSCORE: return Toolkit.getProperty("AWT.underscore", "Underscore");
case VK_FINAL: return Toolkit.getProperty("AWT.final", "Final");
case VK_CONVERT: return Toolkit.getProperty("AWT.convert", "Convert");
case VK_NONCONVERT: return Toolkit.getProperty("AWT.noconvert", "No Convert");
case VK_ACCEPT: return Toolkit.getProperty("AWT.accept", "Accept");
case VK_MODECHANGE: return Toolkit.getProperty("AWT.modechange", "Mode Change");
case VK_KANA: return Toolkit.getProperty("AWT.kana", "Kana");
case VK_KANJI: return Toolkit.getProperty("AWT.kanji", "Kanji");
case VK_ALPHANUMERIC: return Toolkit.getProperty("AWT.alphanumeric", "Alphanumeric");
case VK_KATAKANA: return Toolkit.getProperty("AWT.katakana", "Katakana");
case VK_HIRAGANA: return Toolkit.getProperty("AWT.hiragana", "Hiragana");
case VK_FULL_WIDTH: return Toolkit.getProperty("AWT.fullWidth", "Full-Width");
case VK_HALF_WIDTH: return Toolkit.getProperty("AWT.halfWidth", "Half-Width");
case VK_ROMAN_CHARACTERS: return Toolkit.getProperty("AWT.romanCharacters", "Roman Characters");
case VK_ALL_CANDIDATES: return Toolkit.getProperty("AWT.allCandidates", "All Candidates");
case VK_PREVIOUS_CANDIDATE: return Toolkit.getProperty("AWT.previousCandidate", "Previous Candidate");
case VK_CODE_INPUT: return Toolkit.getProperty("AWT.codeInput", "Code Input");
case VK_JAPANESE_KATAKANA: return Toolkit.getProperty("AWT.japaneseKatakana", "Japanese Katakana");
case VK_JAPANESE_HIRAGANA: return Toolkit.getProperty("AWT.japaneseHiragana", "Japanese Hiragana");
case VK_JAPANESE_ROMAN: return Toolkit.getProperty("AWT.japaneseRoman", "Japanese Roman");
case VK_KANA_LOCK: return Toolkit.getProperty("AWT.kanaLock", "Kana Lock");
case VK_INPUT_METHOD_ON_OFF: return Toolkit.getProperty("AWT.inputMethodOnOff", "Input Method On/Off");
case VK_AGAIN: return Toolkit.getProperty("AWT.again", "Again");
case VK_UNDO: return Toolkit.getProperty("AWT.undo", "Undo");
case VK_COPY: return Toolkit.getProperty("AWT.copy", "Copy");
case VK_PASTE: return Toolkit.getProperty("AWT.paste", "Paste");
case VK_CUT: return Toolkit.getProperty("AWT.cut", "Cut");
case VK_FIND: return Toolkit.getProperty("AWT.find", "Find");
case VK_PROPS: return Toolkit.getProperty("AWT.props", "Props");
case VK_STOP: return Toolkit.getProperty("AWT.stop", "Stop");
}
if (keyCode >= VK_NUMPAD0 && keyCode <= VK_NUMPAD9) {
String numpad = Toolkit.getProperty("AWT.numpad", "NumPad");
char c = (char)(keyCode - VK_NUMPAD0 + '0');
return numpad + "-" + c;
}
if ((keyCode & 0x01000000) != 0) {
return String.valueOf((char)(keyCode ^ 0x01000000 ));
}
String unknown = Toolkit.getProperty("AWT.unknown", "Unknown");
return unknown + " keyCode: 0x" + Integer.toString(keyCode, 16);
}
/**
* Returns a <code>String</code> describing the modifier key(s),
* such as "Shift", or "Ctrl+Shift". These strings can be
* localized by changing the <code>awt.properties</code> file.
* <p>
* Note that <code>InputEvent.ALT_MASK</code> and
* <code>InputEvent.BUTTON2_MASK</code> have the same value,
* so the string "Alt" is returned for both modifiers. Likewise,
* <code>InputEvent.META_MASK</code> and
* <code>InputEvent.BUTTON3_MASK</code> have the same value,
* so the string "Meta" is returned for both modifiers.
*
* @return string a text description of the combination of modifier
* keys that were held down during the event
* @see InputEvent#getModifiersExText(int)
*/
public static String getKeyModifiersText(int modifiers) {
StringBuilder buf = new StringBuilder();
if ((modifiers & InputEvent.META_MASK) != 0) {
buf.append(Toolkit.getProperty("AWT.meta", "Meta"));
buf.append("+");
}
if ((modifiers & InputEvent.CTRL_MASK) != 0) {
buf.append(Toolkit.getProperty("AWT.control", "Ctrl"));
buf.append("+");
}
if ((modifiers & InputEvent.ALT_MASK) != 0) {
buf.append(Toolkit.getProperty("AWT.alt", "Alt"));
buf.append("+");
}
if ((modifiers & InputEvent.SHIFT_MASK) != 0) {
buf.append(Toolkit.getProperty("AWT.shift", "Shift"));
buf.append("+");
}
if ((modifiers & InputEvent.ALT_GRAPH_MASK) != 0) {
buf.append(Toolkit.getProperty("AWT.altGraph", "Alt Graph"));
buf.append("+");
}
if ((modifiers & InputEvent.BUTTON1_MASK) != 0) {
buf.append(Toolkit.getProperty("AWT.button1", "Button1"));
buf.append("+");
}
if (buf.length() > 0) {
buf.setLength(buf.length()-1); // remove trailing '+'
}
return buf.toString();
}
/**
* Returns whether the key in this event is an "action" key.
* Typically an action key does not fire a unicode character and is
* not a modifier key.
*
* @return <code>true</code> if the key is an "action" key,
* <code>false</code> otherwise
*/
public boolean isActionKey() {
switch (keyCode) {
case VK_HOME:
case VK_END:
case VK_PAGE_UP:
case VK_PAGE_DOWN:
case VK_UP:
case VK_DOWN:
case VK_LEFT:
case VK_RIGHT:
case VK_BEGIN:
case VK_KP_LEFT:
case VK_KP_UP:
case VK_KP_RIGHT:
case VK_KP_DOWN:
case VK_F1:
case VK_F2:
case VK_F3:
case VK_F4:
case VK_F5:
case VK_F6:
case VK_F7:
case VK_F8:
case VK_F9:
case VK_F10:
case VK_F11:
case VK_F12:
case VK_F13:
case VK_F14:
case VK_F15:
case VK_F16:
case VK_F17:
case VK_F18:
case VK_F19:
case VK_F20:
case VK_F21:
case VK_F22:
case VK_F23:
case VK_F24:
case VK_PRINTSCREEN:
case VK_SCROLL_LOCK:
case VK_CAPS_LOCK:
case VK_NUM_LOCK:
case VK_PAUSE:
case VK_INSERT:
case VK_FINAL:
case VK_CONVERT:
case VK_NONCONVERT:
case VK_ACCEPT:
case VK_MODECHANGE:
case VK_KANA:
case VK_KANJI:
case VK_ALPHANUMERIC:
case VK_KATAKANA:
case VK_HIRAGANA:
case VK_FULL_WIDTH:
case VK_HALF_WIDTH:
case VK_ROMAN_CHARACTERS:
case VK_ALL_CANDIDATES:
case VK_PREVIOUS_CANDIDATE:
case VK_CODE_INPUT:
case VK_JAPANESE_KATAKANA:
case VK_JAPANESE_HIRAGANA:
case VK_JAPANESE_ROMAN:
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