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Partial cleanup, track and expose key and modifier states.

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This commit is contained in:
Michael Jumper
2012-03-29 23:11:13 -07:00
parent 8c7b883d55
commit b0196b89f1
1 changed files with 60 additions and 27 deletions
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87
guacamole-common-js/src/main/resources/keyboard.js
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@@ -133,10 +133,35 @@ Guacamole.Keyboard = function(element) {
18: 0xFFE7 // alt
};
// Single key state/modifier buffer
var modShift = false;
var modCtrl = false;
var modAlt = false;
/**
* All modifiers and their states.
*/
this.modifiers = {
/**
* Whether shift is currently pressed.
*/
"shift": false,
/**
* Whether ctrl is currently pressed.
*/
"ctrl" : false,
/**
* Whether alt is currently pressed.
*/
"alt" : false
};
/**
* The state of every key, indexed by keysym. If a particular key is
* pressed, the value of pressed for that keysym will be true. If a key
* is not currently pressed, the value for that keysym may be false or
* undefined.
*/
this.pressed = [];
var keydownChar = new Array();
@@ -200,7 +225,7 @@ Guacamole.Keyboard = function(element) {
function getKeySymFromKeyCode(keyCode) {
var keysym = null;
if (!modShift) keysym = unshiftedKeySym[keyCode];
if (!guac_keyboard.modifiers.shift) keysym = unshiftedKeySym[keyCode];
else {
keysym = shiftedKeySym[keyCode];
if (keysym == null) keysym = unshiftedKeySym[keyCode];
@@ -213,16 +238,30 @@ Guacamole.Keyboard = function(element) {
// Sends a single keystroke over the network
function sendKeyPressed(keysym) {
// Mark key as pressed
guac_keyboard.pressed[keysym] = true;
// Send key event
if (keysym != null && guac_keyboard.onkeydown)
return guac_keyboard.onkeydown(keysym) != false;
return true;
}
// Sends a single keystroke over the network
function sendKeyReleased(keysym) {
// Mark key as released
guac_keyboard.pressed[keysym] = false;
// Send key event
if (keysym != null && guac_keyboard.onkeyup)
return guac_keyboard.onkeyup(keysym) != false;
return true;
}
@@ -243,32 +282,29 @@ Guacamole.Keyboard = function(element) {
else if (e.which) keynum = e.which;
// Ctrl/Alt/Shift
if (keynum == 16)
modShift = true;
else if (keynum == 17)
modCtrl = true;
else if (keynum == 18)
modAlt = true;
if (keynum == 16) guac_keyboard.modifiers.shift = true;
else if (keynum == 17) guac_keyboard.modifiers.ctrl = true;
else if (keynum == 18) guac_keyboard.modifiers.alt = true;
// If keysym is defined for given key code, key events can come from
// KEYDOWN.
var keysym = getKeySymFromKeyCode(keynum);
if (keysym) {
// Get keysyms and events from KEYDOWN
if (keysym)
keySymSource = KEYDOWN;
}
// If modifier keys are held down, and we have keyIdentifier
else if ((modCtrl || modAlt) && e.keyIdentifier) {
// Otherwise, if modifier keys are held down, try to get from keyIdentifier
else if ((guac_keyboard.modifiers.ctrl || guac_keyboard.modifiers.alt) && e.keyIdentifier) {
// Get keysym from keyIdentifier
keysym = getKeySymFromKeyIdentifier(modShift, e.keyIdentifier);
keysym = getKeySymFromKeyIdentifier(guac_keyboard.modifiers.shift, e.keyIdentifier);
// Get keysyms and events from KEYDOWN
keySymSource = KEYDOWN;
}
// Otherwise, resort to KEYPRESS
else
// Get keysyms and events from KEYPRESS
keySymSource = KEYPRESS;
keydownCode = keynum;
@@ -356,12 +392,9 @@ Guacamole.Keyboard = function(element) {
else if (e.which) keynum = e.which;
// Ctrl/Alt/Shift
if (keynum == 16)
modShift = false;
else if (keynum == 17)
modCtrl = false;
else if (keynum == 18)
modAlt = false;
if (keynum == 16) guac_keyboard.modifiers.shift = false;
else if (keynum == 17) guac_keyboard.modifiers.ctrl = false;
else if (keynum == 18) guac_keyboard.modifiers.alt = false;
else
stopRepeat();
@@ -378,9 +411,9 @@ Guacamole.Keyboard = function(element) {
// When focus is lost, clear modifiers.
element.onblur = function() {
modAlt = false;
modCtrl = false;
modShift = false;
guac_keyboard.modifiers.alt = false;
guac_keyboard.modifiers.ctrl = false;
guac_keyboard.modifiers.shift = false;
};
};