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keyManager.js
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/
keyManager.js
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define(function(require, exports, module) {
'use strict';
//Helper function that merges two or more objects into one.
function collect() {
var ret = {};
var len = arguments.length;
for (var i = 0; i < len; i++) {
for (var p in arguments[i]) {
if (arguments[i].hasOwnProperty(p)) {
ret[p] = arguments[i][p];
}
}
}
return ret;
}
var triggerKeys = {
commandToggle: {
keyCode: 18,
location: [2],
btnName: 'rightAlt',
isPressed: false,
releaseAfterFunc: false,
func: function() {}
}
};
var modifierKeys = {
textSelection: {
keyCode: 16,
location: [1],
btnName: 'leftShift',
isPressed: false,
releaseAfterFunc: false,
func: function() {}
},
gazeManualOffset: {
keyCode: 190,
location: [0],
btnName: 'fullStop',
isPressed: false,
releaseAfterFunc: false,
func: function() {}
},
};
var commandKeys = {
click: {
keyCode: 81,
location: [0],
btnName: 'Q',
isPressed: false,
releaseAfterFunc: true,
func: require('./movements').cursorClick
},
verticalScroll: {
keyCode: 90,
location: [0],
btnName: 'Z',
isPressed: false,
releaseAfterFunc: false,
func: require('./movements').verticalScroll
},
verticalCursorScroll: {
keyCode: 70,
location: [0],
btnName: 'F',
isPressed: false,
releaseAfterFunc: false,
func: require('./movements').verticalCursorScroll
},
horizontalCursorScroll: {
keyCode: 82,
location: [0],
btnName: 'R',
isPressed: false,
releaseAfterFunc: false,
func: require('./movements').horizontalCursorScroll
},
selectHoveredWord: {
keyCode: 80,
location: [0],
btnName: 'P',
isPressed: false,
releaseAfterFunc: true,
func: require('./movements').selectHoveredWord
},
cursorUp: {
keyCode: 87,
location: [0],
btnName: 'W',
isPressed: false,
releaseAfterFunc: true,
func: require('./movements').arrowKeysMovements('up')
},
cursorDown: {
keyCode: 83,
location: [0],
btnName: 'S',
isPressed: false,
releaseAfterFunc: true,
func: require('./movements').arrowKeysMovements('down')
},
cursorLeft: {
keyCode: 65,
location: [0],
btnName: 'A',
isPressed: false,
releaseAfterFunc: true,
func: require('./movements').arrowKeysMovements('left')
},
cursorRight: {
keyCode: 68,
location: [0],
btnName: 'D',
isPressed: false,
releaseAfterFunc: true,
func: require('./movements').arrowKeysMovements('right')
}
};
var keys = collect(triggerKeys, modifierKeys, commandKeys);
var isKeyPressed = function(key) {
return key.isPressed;
};
function setKeyPressed(key) {
if (key) {
key.isPressed = true;
}
}
function setKeyReleased(key) {
if (key) {
key.isPressed = false;
//Reset all other keys if the command key is released
if (key === keys.commandToggle) {
for (var k in keys) {
if (keys[k].hasOwnProperty("isPressed")) {
keys[k].isPressed = false;
}
}
}
}
}
function getKeyFromCode(keyCode) {
for (var k in keys) {
if (keys[k].keyCode === keyCode)
return keys[k];
}
return undefined;
}
function getKeyFromCodeAndLocation(keyCode, keyLocation) {
for (var k in keys) {
if (keys[k].keyCode === keyCode && keys[k].location.indexOf(keyLocation) !== -1)
return keys[k];
}
return undefined;
}
function isValidKeyCommand(key) {
if (key === keys.commandToggle || !keys.commandToggle.isPressed) {
return false;
}
return isKeyPressed(key);
}
//Note: This works only for 2 level objects such as mine, it is not flexible at all. As Brackets doesn't allow other libraries, I cannot use lodash or similar, so this solution is enough.
function setUserDefinedKeys(userKeys) {
if (userKeys && Object.keys(userKeys).length) {
Object.keys(userKeys).forEach(function(key) {
Object.keys(userKeys[key]).forEach(function(inKey) {
if (inKey in keys[key]) {
keys[key][inKey] = userKeys[key][inKey];
}
});
});
}
}
exports.getKeyFromCodeAndLocation = getKeyFromCodeAndLocation;
exports.getKeyFromCode = getKeyFromCode;
exports.isValidKeyCommand = isValidKeyCommand;
exports.isKeyPressed = isKeyPressed;
exports.setKeyPressed = setKeyPressed;
exports.setKeyReleased = setKeyReleased;
exports.setUserDefinedKeys = setUserDefinedKeys;
exports.keys = keys;
});