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Refactored node helper to allow specifiying multiple evdev readers #24

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Refactored node helper to allow specifiying multiple evdev readers #24

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195 changes: 100 additions & 95 deletions node_helper.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,113 +12,118 @@ const Log = require("logger");
var evdev;
var udev;

module.exports = NodeHelper.create({
start: function () {
Log.log("MMM-KeyBindings helper has started…");
this.evdevMonitorCreated = false;
},
class EvDevHandler {
constructor(path, udev, onKeyPress) {
this.evdevPath = path;
this.udev = udev;
this.onKey = onKeyPress;
Log.log("Create EvDevHandler for " + path);
}

stop: function () {
if (this.evdevMonitorCreated) {
Log.log("EVDEV: Closing monitor and reader");
try {
this.udevMonitor.close();
} catch (e) {
if (
e.toString().indexOf("Cannot read property 'close' of undefined") ===
-1
) {
Log.error(e);
close() {
Log.log("EVDEV: Closing monitor and reader of " + this.evdevPath);
try {
this.udevMonitor.close();
} catch (e) {
if (e.toString().indexOf("Cannot read property 'close' of undefined") === -1) {
Log.error(e);
}
}
try {
this.evdevReader.close();
} catch (e) {
Log.error(e);
}
}
try {
this.evdevReader.close();
} catch (e) {
Log.error(e);
}
}
},

waitForDevice: function () {
this.udevMonitor = udev.monitor();
this.udevMonitor.on("add", (device) => {
if (
"DEVLINKS" in device &&
device.DEVLINKS === this.evdevConfig.eventPath
) {
Log.log("UDEV: Device connected.");
this.udevMonitor.close();
startMonitor() {
this.evdevReader = new evdev();
this.pendingKeyPress = {};

this.evdevReader
.on("EV_KEY", (data) => {
// Log.log("key : ", data.code, data.value);
if (data.value > 0) {
this.pendingKeyPress.code = data.code;
this.pendingKeyPress.value = data.value;
} else {
if ("code" in this.pendingKeyPress && this.pendingKeyPress.code === data.code) {
Log.log(`${this.pendingKeyPress.code} ${this.pendingKeyPress.value === 2 ? "long " : ""}pressed.`);
this.onKey(data.code, this.pendingKeyPress.value === 2 ? "KEY_LONGPRESSED" : "KEY_PRESSED");
}
this.pendingKeyPress = {};
}
})
.on("error", (e) => {
if (e.code === "ENODEV" || e.code === "ENOENT") {
Log.info(`EVDEV: Device not connected, nothing at path ${e.path}, waiting for device…`);
this.waitForDevice();
} else {
Log.error("EVDEV: ", e);
}
});

this.setupDevice();
}
});
},
}

setupDevice: function () {
this.device = this.evdevReader.open(this.evdevConfig.eventPath);
this.device.on("open", () => {
Log.log(`EVDEV: Connected to device: ${JSON.stringify(this.device.id)}`);
});
this.device.on("close", () => {
Log.debug(`EVDEV: Connection to device has been closed.`);
this.waitForDevice();
});
},
setupDevice() {
this.device = this.evdevReader.open(this.evdevPath);
this.device.on("open", () => {
Log.log(`EVDEV: Connected to device: ${JSON.stringify(this.device.id)}`);
});
this.device.on("close", () => {
Log.debug(`EVDEV: Connection to device has been closed.`);
this.waitForDevice();
});
}

waitForDevice() {
this.udevMonitor = this.udev.monitor();
this.udevMonitor.on("add", (device) => {
if ("DEVLINKS" in device && device.DEVLINKS === this.evdevPath) {
Log.log("UDEV: Device connected.");
this.udevMonitor.close();
this.setupDevice();
}
});
}

startEvdevMonitor: function () {
evdev = require("evdev");
udev = require("udev");
}

this.evdevMonitorCreated = true;
this.evdevReader = new evdev();
this.pendingKeyPress = {};
module.exports = NodeHelper.create({
start: function () {
Log.log("MMM-KeyBindings helper has started…");
this.evdevMonitorCreated = false;
this.handlers = [];
},

this.evdevReader
.on("EV_KEY", (data) => {
// Log.log("key : ", data.code, data.value);
if (data.value > 0) {
this.pendingKeyPress.code = data.code;
this.pendingKeyPress.value = data.value;
} else {
if (
"code" in this.pendingKeyPress &&
this.pendingKeyPress.code === data.code
) {
Log.log(
`${this.pendingKeyPress.code} ${
this.pendingKeyPress.value === 2 ? "long " : ""
}pressed.`
);
this.sendSocketNotification("KEYPRESS", {
keyName: data.code,
keyState:
this.pendingKeyPress.value === 2
? "KEY_LONGPRESSED"
: "KEY_PRESSED"
stop: function () {
if (this.evdevMonitorCreated) {
handlers.forEach(h => {
h.close();
});
}
this.pendingKeyPress = {};
}
})
.on("error", (e) => {
if (e.code === "ENODEV" || e.code === "ENOENT") {
Log.info(
`EVDEV: Device not connected, nothing at path ${e.path}, waiting for device…`
);
this.waitForDevice();
} else {
Log.error("EVDEV: ", e);
}
});
},

this.setupDevice();
},

socketNotificationReceived: function (notification, payload) {
if (notification === "ENABLE_EVDEV") {
if (!this.evdevMonitorCreated) {
this.evdevConfig = payload;
this.startEvdevMonitor();
}
socketNotificationReceived: function (notification, payload) {
var self = this;
if (notification === "ENABLE_EVDEV") {
if (!this.evdevMonitorCreated) {
evdev = require('evdev');
udev = require('udev');
var paths = payload.eventPath.split(",");
this.handlers = paths.map(p => new EvDevHandler(p, udev, (name, state) => {
self.sendSocketNotification("KEYPRESS", {
keyName: name,
keyState: state
});
}));
this.handlers.forEach(h => {
h.startMonitor();
});
this.evdevMonitorCreated = true;
}
}
}
}
});