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Access key name strings from a getter

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This commit is contained in:
Eric Rosenbaum 2018-05-01 09:01:36 -04:00
parent fbeaec600c
commit 85ac307261
1 changed files with 22 additions and 21 deletions
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43
src/io/keyboard.js
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@ -22,16 +22,16 @@ class Keyboard {
/**
* Names used for a set of special keys in Scratch.
* @type {Array.<string>}
* @type {ScratchKey}
*/
static get SPECIAL_KEY_NAMES () {
return [
'space',
'left arrow',
'up arrow',
'right arrow',
'down arrow'
];
static get KEY_NAMES () {
return {
SPACE: 'space',
LEFT: 'left arrow',
UP: 'up arrow',
RIGHT: 'right arrow',
DOWN: 'down arrow'
};
}
/**
@ -43,15 +43,15 @@ class Keyboard {
keyString = Cast.toString(keyString);
// Convert space and arrow keys to their Scratch key names.
switch (keyString) {
case ' ': return 'space';
case ' ': return Keyboard.KEY_NAMES.SPACE;
case 'ArrowLeft':
case 'Left': return 'left arrow';
case 'Left': return Keyboard.KEY_NAMES.LEFT;
case 'ArrowUp':
case 'Up': return 'up arrow';
case 'Up': return Keyboard.KEY_NAMES.UP;
case 'Right':
case 'ArrowRight': return 'right arrow';
case 'ArrowRight': return Keyboard.KEY_NAMES.RIGHT;
case 'Down':
case 'ArrowDown': return 'down arrow';
case 'ArrowDown': return Keyboard.KEY_NAMES.DOWN;
}
// Ignore modifier keys
if (keyString.length > 1) {
@ -74,18 +74,19 @@ class Keyboard {
return String.fromCharCode(keyArg);
}
switch (keyArg) {
case 32: return 'space';
case 37: return 'left arrow';
case 38: return 'up arrow';
case 39: return 'right arrow';
case 40: return 'down arrow';
case 32: return Keyboard.KEY_NAMES.SPACE;
case 37: return Keyboard.KEY_NAMES.LEFT;
case 38: return Keyboard.KEY_NAMES.UP;
case 39: return Keyboard.KEY_NAMES.RIGHT;
case 40: return Keyboard.KEY_NAMES.DOWN;
}
}
keyArg = Cast.toString(keyArg);
// If the arg matches a special key name, return it.
if (Keyboard.SPECIAL_KEY_NAMES.includes(keyArg)) {
const keyNameList = Object.values(Keyboard.KEY_NAMES);
if (keyNameList.includes(keyArg)) {
return keyArg;
}
@ -96,7 +97,7 @@ class Keyboard {
// Check for the space character.
if (keyArg === ' ') {
return 'space';
return Keyboard.KEY_NAMES.SPACE;
}
return keyArg.toUpperCase();