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function Keyboard() {
var self = this;
/********************************************************************************/
var __ws = null;
var __keys = [].slice.call(document.querySelectorAll("div#keyboard-desktop div.keyboard-block div.keyboard-row div.key"));
var __modifiers = [].slice.call(document.querySelectorAll("div#keyboard-desktop div.keyboard-block div.keyboard-row div.modifier"));
var __mac_cmd_hook = ((
window.navigator.oscpu
|| window.navigator.platform
|| window.navigator.appVersion
|| "Unknown"
).indexOf("Mac") !== -1);
var __init__ = function() {
$("hid-keyboard-led").title = "Keyboard free";
$("keyboard-window").onkeydown = (event) => __keyboardHandler(event, true);
$("keyboard-window").onkeyup = (event) => __keyboardHandler(event, false);
$("keyboard-window").onfocus = __updateLeds;
$("keyboard-window").onblur = __updateLeds;
$("stream-window").onkeydown = (event) => __keyboardHandler(event, true);
$("stream-window").onkeyup = (event) => __keyboardHandler(event, false);
$("stream-window").onfocus = __updateLeds;
$("stream-window").onblur = __updateLeds;
Array.prototype.forEach.call($$("key"), function(el_key) {
tools.setOnDown(el_key, () => __clickHandler(el_key, true));
tools.setOnUp(el_key, () => __clickHandler(el_key, false));
el_key.onmouseout = function() {
if (__isPressed(el_key)) {
__clickHandler(el_key, false);
}
};
});
Array.prototype.forEach.call($$("modifier"), function(el_key) {
tools.setOnDown(el_key, () => __toggleModifierHandler(el_key));
});
if (__mac_cmd_hook) {
tools.info("Keyboard: enabled Mac-CMD-Hook");
}
};
/********************************************************************************/
self.setSocket = function(ws) {
if (ws !== __ws) {
self.releaseAll();
__ws = ws;
}
__updateLeds();
};
self.releaseAll = function() {
__keys.concat(__modifiers).forEach(function(el_key) {
if (__isActive(el_key)) {
self.fireEvent(el_key.getAttribute("data-key"), false);
}
});
};
self.fireEvent = function(code, state) {
__keyboardHandler({code: code}, state);
};
var __updateLeds = function() {
if (__ws && (document.activeElement === $("stream-window") || document.activeElement === $("keyboard-window"))) {
$("hid-keyboard-led").className = "led-on";
$("hid-keyboard-led").title = "Keyboard captured";
} else {
$("hid-keyboard-led").className = "led-off";
$("hid-keyboard-led").title = "Keyboard free";
}
};
var __keyboardHandler = function(event, state) {
if (event.preventDefault) {
event.preventDefault();
}
var el_key = document.querySelector("[data-key='" + event.code + "']");
if (el_key && !event.repeat) {
__commonHandler(el_key, state, "pressed");
if (__mac_cmd_hook) {
// https://bugs.chromium.org/p/chromium/issues/detail?id=28089
// https://bugzilla.mozilla.org/show_bug.cgi?id=1299553
if ((event.code === "MetaLeft" || event.code === "MetaRight") && !state) {
__keys.forEach(function(el_key) {
if (__isActive(el_key)) {
self.fireEvent(el_key.getAttribute("data-key"), false);
}
});
}
}
__unholdModifiers();
}
};
var __clickHandler = function(el_key, state) {
__commonHandler(el_key, state, "pressed");
__unholdModifiers();
};
var __toggleModifierHandler = function(el_key) {
__commonHandler(el_key, !__isActive(el_key), "holded");
};
var __unholdModifiers = function() {
__modifiers.forEach(function(el_key) {
if (__isHolded(el_key)) {
__deactivate(el_key);
__sendKey(el_key, false);
}
});
};
var __commonHandler = function(el_key, state, cls) {
if (state && !__isActive(el_key)) {
__deactivate(el_key);
__activate(el_key, cls);
__sendKey(el_key, true);
} else {
__deactivate(el_key);
__sendKey(el_key, false);
}
};
var __isPressed = function(el_key) {
var is_pressed = false;
Array.prototype.forEach.call(__resolveKeys(el_key), function(el_key) {
is_pressed = (is_pressed || el_key.classList.contains("pressed"));
});
return is_pressed;
};
var __isHolded = function(el_key) {
var is_holded = false;
Array.prototype.forEach.call(__resolveKeys(el_key), function(el_key) {
is_holded = (is_holded || el_key.classList.contains("holded"));
});
return is_holded;
};
var __isActive = function(el_key) {
var is_active = false;
Array.prototype.forEach.call(__resolveKeys(el_key), function(el_key) {
is_active = (is_active || el_key.classList.contains("pressed") || el_key.classList.contains("holded"));
});
return is_active;
};
var __activate = function(el_key, cls) {
Array.prototype.forEach.call(__resolveKeys(el_key), function(el_key) {
el_key.classList.add(cls);
});
};
var __deactivate = function(el_key) {
Array.prototype.forEach.call(__resolveKeys(el_key), function(el_key) {
el_key.classList.remove("pressed");
el_key.classList.remove("holded");
});
};
var __resolveKeys = function(el_key) {
return document.querySelectorAll("[data-key='" + el_key.getAttribute("data-key") + "']");
};
var __sendKey = function(el_key, state) {
var code = el_key.getAttribute("data-key");
tools.debug("Key", (state ? "pressed:" : "released:"), code);
if (__ws) {
__ws.send(JSON.stringify({
event_type: "key",
key: code,
state: state,
}));
}
};
__init__();
}
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