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/*****************************************************************************
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
*****************************************************************************/
function Hid() {
var self = this;
/************************************************************************/
var __ws = null;
var __chars_to_codes = {};
var __codes_delay = 50;
var __keyboard = new Keyboard();
var __mouse = new Mouse();
var __init__ = function() {
let hidden_attr = null;
let visibility_change_attr = null;
if (typeof document.hidden !== "undefined") {
hidden_attr = "hidden";
visibility_change_attr = "visibilitychange";
} else if (typeof document.webkitHidden !== "undefined") {
hidden_attr = "webkitHidden";
visibility_change_attr = "webkitvisibilitychange";
} else if (typeof document.mozHidden !== "undefined") {
hidden_attr = "mozHidden";
visibility_change_attr = "mozvisibilitychange";
}
if (visibility_change_attr) {
document.addEventListener(
visibility_change_attr,
function() {
if (document[hidden_attr]) {
__releaseAll();
}
},
false
);
}
window.addEventListener("pagehide", __releaseAll);
window.addEventListener("blur", __releaseAll);
__chars_to_codes = __buildCharsToCodes();
tools.setOnClick($("hid-pak-button"), __clickPasteAsKeysButton);
tools.setOnClick($("hid-reset-button"), __clickResetButton);
for (let el_shortcut of $$$("[data-shortcut]")) {
tools.setOnClick(el_shortcut, () => __emitShortcut(el_shortcut.getAttribute("data-shortcut").split(" ")));
}
};
/************************************************************************/
self.setSocket = function(ws) {
wm.switchDisabled($("hid-pak-text"), !ws);
wm.switchDisabled($("hid-pak-button"), !ws);
wm.switchDisabled($("hid-reset-button"), !ws);
__ws = ws;
__keyboard.setSocket(ws);
__mouse.setSocket(ws);
};
self.setState = function(state) {
__keyboard.setState(state);
__mouse.setState(state);
};
var __releaseAll = function() {
__keyboard.releaseAll();
__mouse.releaseAll();
};
var __emitShortcut = function(codes) {
return new Promise(function(resolve) {
tools.debug("HID: emitting keys:", codes);
let raw_events = [];
[[codes, true], [codes.slice().reverse(), false]].forEach(function(op) {
let [op_codes, state] = op;
for (let code of op_codes) {
raw_events.push({code: code, state: state});
}
});
let index = 0;
let iterate = () => setTimeout(function() {
__keyboard.emit(raw_events[index].code, raw_events[index].state);
++index;
if (index < raw_events.length) {
iterate();
} else {
resolve(null);
}
}, __codes_delay);
iterate();
});
};
var __buildCharsToCodes = function() {
let chars_to_codes = {
"\n": ["Enter"],
"\t": ["Tab"],
" ": ["Space"],
"`": ["Backquote"], "~": ["ShiftLeft", "Backquote"],
"\\": ["Backslash"], "|": ["ShiftLeft", "Backslash"],
"[": ["BracketLeft"], "{": ["ShiftLeft", "BracketLeft"],
"]": ["BracketLeft"], "}": ["ShiftLeft", "BracketRight"],
",": ["Comma"], "<": ["ShiftLeft", "Comma"],
".": ["Period"], ">": ["ShiftLeft", "Period"],
"1": ["Digit1"], "!": ["ShiftLeft", "Digit1"],
"2": ["Digit2"], "@": ["ShiftLeft", "Digit2"],
"3": ["Digit3"], "#": ["ShiftLeft", "Digit3"],
"4": ["Digit4"], "$": ["ShiftLeft", "Digit4"],
"5": ["Digit5"], "%": ["ShiftLeft", "Digit5"],
"6": ["Digit6"], "^": ["ShiftLeft", "Digit6"],
"7": ["Digit7"], "&": ["ShiftLeft", "Digit7"],
"8": ["Digit8"], "*": ["ShiftLeft", "Digit8"],
"9": ["Digit9"], "(": ["ShiftLeft", "Digit9"],
"0": ["Digit0"], ")": ["ShiftLeft", "Digit0"],
"-": ["Minus"], "_": ["ShiftLeft", "Minus"],
"'": ["Quote"], "\"": ["ShiftLeft", "Quote"],
";": ["Semicolon"], ":": ["ShiftLeft", "Semicolon"],
"/": ["Slash"], "?": ["ShiftLeft", "Slash"],
"=": ["Equal"], "+": ["ShiftLeft", "Equal"],
};
for (let ch = "a".charCodeAt(0); ch <= "z".charCodeAt(0); ++ch) {
let low = String.fromCharCode(ch);
let up = low.toUpperCase();
let code = "Key" + up;
chars_to_codes[low] = [code];
chars_to_codes[up] = ["ShiftLeft", code];
}
return chars_to_codes;
};
var __clickPasteAsKeysButton = function() {
let text = $("hid-pak-text").value.replace(/[^\x00-\x7F]/g, ""); // eslint-disable-line no-control-regex
if (text) {
let clipboard_codes = [];
let codes_count = 0;
for (let ch of text) {
let codes = __chars_to_codes[ch];
if (codes) {
codes_count += codes.length;
clipboard_codes.push(codes);
}
}
let time = __codes_delay * codes_count * 2 / 1000;
let confirm_msg = `
You are going to automatically type ${codes_count} characters from the system clipboard.
It will take ${time} seconds.<br>
<br>
Are you sure you want to continue?
`;
wm.confirm(confirm_msg).then(function(ok) {
if (ok) {
wm.switchDisabled($("hid-pak-text"), true);
wm.switchDisabled($("hid-pak-button"), true);
$("hid-pak-led").className = "led-yellow-rotating-fast";
$("hid-pak-led").title = "Autotyping...";
tools.debug("HID: paste-as-keys:", text);
let index = 0;
let iterate = function() {
__emitShortcut(clipboard_codes[index]).then(function() {
++index;
if (index < clipboard_codes.length && __ws) {
iterate();
} else {
$("hid-pak-text").value = "";
wm.switchDisabled($("hid-pak-text"), false);
wm.switchDisabled($("hid-pak-button"), false);
$("hid-pak-led").className = "led-gray";
$("hid-pak-led").title = "";
}
});
};
iterate();
} else {
$("hid-pak-text").value = "";
}
});
}
};
var __clickResetButton = function() {
wm.confirm("Are you sure you want to reset HID (keyboard & mouse)?").then(function(ok) {
if (ok) {
let http = tools.makeRequest("POST", "/api/hid/reset", function() {
if (http.readyState === 4) {
if (http.status !== 200) {
wm.error("HID reset error:<br>", http.responseText);
}
}
});
}
});
};
__init__();
}
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