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input.js: adjust special key handling for non-US keys. 

Issue #21 - non-US keyboard layouts.

Only identify some keys as special during the keyDown event so that
when using non-US keyboards the values don't overlap with the values
for normal keys.

Some keys have to still be identified in both keyDown and keyPress
since they generate both: backspace and enter for Firefox and Opera,
tab for Opera.
This commit is contained in:
Joel Martin 2011-04-12 09:06:11 -05:00
parent 303819eaa9
commit fac149ddbe
1 changed files with 31 additions and 21 deletions
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36
include/input.js
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@ -42,19 +42,36 @@ that.set_target = function () { throw("target cannot be changed"); }
// From the event keyCode return the keysym value for keys that need
// to be suppressed otherwise they may trigger unintended browser
// actions
function getKeysymSpecial(evt, kind) {
function getKeysymSpecial(evt) {
var keysym = null;
/*
switch ( evt.keyCode ) {
// These generate a keyDown and keyPress in Firefox and Opera
case 8 : keysym = 0xFF08; break; // BACKSPACE
case 13 : keysym = 0xFF0D; break; // ENTER
// This generates a keyDown and keyPress in Opera
case 9 : keysym = 0xFF09; break; // TAB
default : break;
}
*/
if (evt.type === 'keydown') {
switch ( evt.keyCode ) {
case 8 : keysym = 0xFF08; break; // BACKSPACE
case 9 : keysym = 0xFF09; break; // TAB
case 13 : keysym = 0xFF0D; break; // ENTER
case 9 : keysym = 0xFF09; break; // TAB
case 27 : keysym = 0xFF1B; break; // ESCAPE
case 46 : keysym = 0xFFFF; break; // DELETE
case 36 : keysym = 0xFF50; break; // HOME
case 35 : keysym = 0xFF57; break; // END
case 33 : keysym = 0xFF55; break; // PAGE_UP
case 34 : keysym = 0xFF56; break; // PAGE_DOWN
case 45 : keysym = 0xFF63; break; // INSERT
// '-' during keyPress
case 37 : keysym = 0xFF51; break; // LEFT
case 38 : keysym = 0xFF52; break; // UP
case 39 : keysym = 0xFF53; break; // RIGHT
@ -64,13 +81,6 @@ function getKeysymSpecial(evt, kind) {
//case 18 : keysym = 0xFFE7; break; // Left Meta (Mac Option)
case 18 : keysym = 0xFFE9; break; // Left ALT (Mac Command)
default : break;
}
if (kind === 'down') {
switch ( evt.keyCode ) {
case 45 : keysym = 0xFF63; break; // INSERT
// '-' during keyPress
case 112 : keysym = 0xFFBE; break; // F1
case 113 : keysym = 0xFFBF; break; // F2
case 114 : keysym = 0xFFC0; break; // F3
@ -205,7 +215,7 @@ function show_keyDownList(kind) {
}
function copyKeyEvent(evt) {
var members = ['keyCode', 'charCode', 'which',
var members = ['type', 'keyCode', 'charCode', 'which',
'altKey', 'ctrlKey', 'shiftKey',
'keyLocation', 'keyIdentifier'], i, obj = {};
for (i = 0; i < members.length; i++) {
@ -302,7 +312,7 @@ function onKeyDown(e) {
fevt = copyKeyEvent(evt);
keysym = getKeysymSpecial(evt, 'down');
keysym = getKeysymSpecial(evt);
// Save keysym decoding for use in keyUp
fevt.keysym = keysym;
if (keysym) {
@ -343,12 +353,12 @@ function onKeyPress(e) {
Util.Debug("onKeyPress kC:" + evt.keyCode + " cC:" + evt.charCode + " w:" + evt.which);
if (((evt.which !== "undefined") && (evt.which === 0)) ||
(getKeysymSpecial(evt, 'press'))) {
(getKeysymSpecial(evt))) {
// Firefox and Opera generate a keyPress event even if keyDown
// is suppressed. But the keys we want to suppress will have
// either:
// - the which attribute set to 0
// - getKeysymSpecial(..., 'press') will identify it
// - getKeysymSpecial() will identify it
Util.Debug("Ignoring special key in keyPress");
Util.stopEvent(e);
return false;