mirror of
https://github.com/gyurix1968/guacamole-client.git
synced 2025-09-07 21:51:23 +00:00
Migrate to minify-maven-plugin and Google Closure Compiler.
This commit is contained in:
Michael Jumper
661
guacamole-common-js/src/main/webapp/modules/Keyboard.js
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661
guacamole-common-js/src/main/webapp/modules/Keyboard.js
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@@ -0,0 +1,661 @@
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/*
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* Copyright (C) 2013 Glyptodon LLC
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*
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||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
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||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
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||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
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||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
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||||
*/
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||||
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var Guacamole = Guacamole || {};
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/**
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* Provides cross-browser and cross-keyboard keyboard for a specific element.
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* Browser and keyboard layout variation is abstracted away, providing events
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* which represent keys as their corresponding X11 keysym.
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*
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* @constructor
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* @param {Element} element The Element to use to provide keyboard events.
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*/
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Guacamole.Keyboard = function(element) {
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/**
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* Reference to this Guacamole.Keyboard.
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* @private
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*/
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var guac_keyboard = this;
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/**
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* Fired whenever the user presses a key with the element associated
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* with this Guacamole.Keyboard in focus.
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*
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* @event
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* @param {Number} keysym The keysym of the key being pressed.
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*/
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this.onkeydown = null;
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/**
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* Fired whenever the user releases a key with the element associated
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* with this Guacamole.Keyboard in focus.
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*
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* @event
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* @param {Number} keysym The keysym of the key being released.
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*/
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this.onkeyup = null;
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/**
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* Map of known JavaScript keycodes which do not map to typable characters
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* to their unshifted X11 keysym equivalents.
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* @private
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*/
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var unshiftedKeysym = {
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8: [0xFF08], // backspace
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9: [0xFF09], // tab
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13: [0xFF0D], // enter
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16: [0xFFE1, 0xFFE1, 0xFFE2], // shift
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17: [0xFFE3, 0xFFE3, 0xFFE4], // ctrl
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18: [0xFFE9, 0xFFE9, 0xFFEA], // alt
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19: [0xFF13], // pause/break
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20: [0xFFE5], // caps lock
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27: [0xFF1B], // escape
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32: [0x0020], // space
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33: [0xFF55], // page up
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34: [0xFF56], // page down
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35: [0xFF57], // end
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36: [0xFF50], // home
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37: [0xFF51], // left arrow
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38: [0xFF52], // up arrow
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39: [0xFF53], // right arrow
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40: [0xFF54], // down arrow
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45: [0xFF63], // insert
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46: [0xFFFF], // delete
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91: [0xFFEB], // left window key (hyper_l)
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92: [0xFF67], // right window key (menu key?)
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93: null, // select key
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112: [0xFFBE], // f1
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113: [0xFFBF], // f2
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114: [0xFFC0], // f3
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115: [0xFFC1], // f4
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116: [0xFFC2], // f5
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117: [0xFFC3], // f6
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118: [0xFFC4], // f7
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119: [0xFFC5], // f8
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120: [0xFFC6], // f9
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121: [0xFFC7], // f10
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122: [0xFFC8], // f11
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123: [0xFFC9], // f12
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144: [0xFF7F], // num lock
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145: [0xFF14] // scroll lock
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};
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/**
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* Map of known JavaScript keyidentifiers which do not map to typable
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||||
* characters to their unshifted X11 keysym equivalents.
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* @private
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*/
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var keyidentifier_keysym = {
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"Again": [0xFF66],
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"AllCandidates": [0xFF3D],
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"Alphanumeric": [0xFF30],
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"Alt": [0xFFE9, 0xFFE9, 0xFFEA],
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"Attn": [0xFD0E],
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"AltGraph": [0xFFEA],
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"ArrowDown": [0xFF54],
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"ArrowLeft": [0xFF51],
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"ArrowRight": [0xFF53],
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"ArrowUp": [0xFF52],
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"Backspace": [0xFF08],
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"CapsLock": [0xFFE5],
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"Cancel": [0xFF69],
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"Clear": [0xFF0B],
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"Convert": [0xFF21],
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"Copy": [0xFD15],
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"Crsel": [0xFD1C],
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"CrSel": [0xFD1C],
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"CodeInput": [0xFF37],
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"Compose": [0xFF20],
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"Control": [0xFFE3, 0xFFE3, 0xFFE4],
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"ContextMenu": [0xFF67],
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"Delete": [0xFFFF],
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"Down": [0xFF54],
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"End": [0xFF57],
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"Enter": [0xFF0D],
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"EraseEof": [0xFD06],
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"Escape": [0xFF1B],
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"Execute": [0xFF62],
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"Exsel": [0xFD1D],
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"ExSel": [0xFD1D],
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"F1": [0xFFBE],
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"F2": [0xFFBF],
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"F3": [0xFFC0],
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"F4": [0xFFC1],
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"F5": [0xFFC2],
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"F6": [0xFFC3],
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"F7": [0xFFC4],
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"F8": [0xFFC5],
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"F9": [0xFFC6],
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"F10": [0xFFC7],
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"F11": [0xFFC8],
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"F12": [0xFFC9],
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"F13": [0xFFCA],
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"F14": [0xFFCB],
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"F15": [0xFFCC],
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"F16": [0xFFCD],
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"F17": [0xFFCE],
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"F18": [0xFFCF],
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"F19": [0xFFD0],
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"F20": [0xFFD1],
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"F21": [0xFFD2],
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"F22": [0xFFD3],
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"F23": [0xFFD4],
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"F24": [0xFFD5],
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"Find": [0xFF68],
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||||
"GroupFirst": [0xFE0C],
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||||
"GroupLast": [0xFE0E],
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"GroupNext": [0xFE08],
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||||
"GroupPrevious": [0xFE0A],
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||||
"FullWidth": null,
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||||
"HalfWidth": null,
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||||
"HangulMode": [0xFF31],
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"Hankaku": [0xFF29],
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"HanjaMode": [0xFF34],
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||||
"Help": [0xFF6A],
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"Hiragana": [0xFF25],
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"HiraganaKatakana": [0xFF27],
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||||
"Home": [0xFF50],
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||||
"Hyper": [0xFFED, 0xFFED, 0xFFEE],
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||||
"Insert": [0xFF63],
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||||
"JapaneseHiragana": [0xFF25],
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||||
"JapaneseKatakana": [0xFF26],
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||||
"JapaneseRomaji": [0xFF24],
|
||||
"JunjaMode": [0xFF38],
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||||
"KanaMode": [0xFF2D],
|
||||
"KanjiMode": [0xFF21],
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||||
"Katakana": [0xFF26],
|
||||
"Left": [0xFF51],
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||||
"Meta": [0xFFE7],
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||||
"ModeChange": [0xFF7E],
|
||||
"NumLock": [0xFF7F],
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||||
"PageDown": [0xFF55],
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||||
"PageUp": [0xFF56],
|
||||
"Pause": [0xFF13],
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||||
"Play": [0xFD16],
|
||||
"PreviousCandidate": [0xFF3E],
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||||
"PrintScreen": [0xFD1D],
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||||
"Redo": [0xFF66],
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||||
"Right": [0xFF53],
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||||
"RomanCharacters": null,
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||||
"Scroll": [0xFF14],
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||||
"Select": [0xFF60],
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||||
"Separator": [0xFFAC],
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||||
"Shift": [0xFFE1, 0xFFE1, 0xFFE2],
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||||
"SingleCandidate": [0xFF3C],
|
||||
"Super": [0xFFEB, 0xFFEB, 0xFFEC],
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||||
"Tab": [0xFF09],
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"Up": [0xFF52],
|
||||
"Undo": [0xFF65],
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||||
"Win": [0xFFEB],
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||||
"Zenkaku": [0xFF28],
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||||
"ZenkakuHankaku": [0xFF2A]
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||||
};
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/**
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* Map of known JavaScript keycodes which do not map to typable characters
|
||||
* to their shifted X11 keysym equivalents. Keycodes must only be listed
|
||||
* here if their shifted X11 keysym equivalents differ from their unshifted
|
||||
* equivalents.
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* @private
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*/
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var shiftedKeysym = {
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||||
18: [0xFFE7, 0xFFE7, 0xFFEA] // alt
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||||
};
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||||
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||||
/**
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* All keysyms which should not repeat when held down.
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* @private
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*/
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var no_repeat = {
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0xFFE1: true, // Left shift
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0xFFE2: true, // Right shift
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0xFFE3: true, // Left ctrl
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0xFFE4: true, // Right ctrl
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||||
0xFFE7: true, // Left meta
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||||
0xFFE8: true, // Right meta
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0xFFE9: true, // Left alt
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0xFFEA: true, // Right alt (or AltGr)
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0xFFEB: true, // Left hyper
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0xFFEC: true // Right hyper
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};
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/**
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* All modifiers and their states.
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*/
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this.modifiers = new Guacamole.Keyboard.ModifierState();
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/**
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* The state of every key, indexed by keysym. If a particular key is
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* pressed, the value of pressed for that keysym will be true. If a key
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* is not currently pressed, it will not be defined.
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*/
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this.pressed = {};
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/**
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* The keysym associated with a given keycode when keydown fired.
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* @private
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*/
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var keydownChar = [];
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/**
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* Timeout before key repeat starts.
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* @private
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*/
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var key_repeat_timeout = null;
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/**
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* Interval which presses and releases the last key pressed while that
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* key is still being held down.
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* @private
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*/
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var key_repeat_interval = null;
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/**
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* Given an array of keysyms indexed by location, returns the keysym
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* for the given location, or the keysym for the standard location if
|
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* undefined.
|
||||
*
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* @param {Array} keysyms An array of keysyms, where the index of the
|
||||
* keysym in the array is the location value.
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* @param {Number} location The location on the keyboard corresponding to
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* the key pressed, as defined at:
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* http://www.w3.org/TR/DOM-Level-3-Events/#events-KeyboardEvent
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*/
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function get_keysym(keysyms, location) {
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if (!keysyms)
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return null;
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||||
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return keysyms[location] || keysyms[0];
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||||
}
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||||
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||||
function keysym_from_key_identifier(shifted, identifier, location) {
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||||
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||||
var typedCharacter;
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||||
|
||||
// If identifier is U+xxxx, decode Unicode character
|
||||
var unicodePrefixLocation = identifier.indexOf("U+");
|
||||
if (unicodePrefixLocation >= 0) {
|
||||
var hex = identifier.substring(unicodePrefixLocation+2);
|
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typedCharacter = String.fromCharCode(parseInt(hex, 16));
|
||||
}
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// If single character, use that as typed character
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||||
else if (identifier.length === 1)
|
||||
typedCharacter = identifier;
|
||||
|
||||
// Otherwise, look up corresponding keysym
|
||||
else
|
||||
return get_keysym(keyidentifier_keysym[identifier], location);
|
||||
|
||||
// Convert case if shifted
|
||||
if (shifted)
|
||||
typedCharacter = typedCharacter.toUpperCase();
|
||||
else
|
||||
typedCharacter = typedCharacter.toLowerCase();
|
||||
|
||||
// Get codepoint
|
||||
var codepoint = typedCharacter.charCodeAt(0);
|
||||
return keysym_from_charcode(codepoint);
|
||||
|
||||
}
|
||||
|
||||
function isControlCharacter(codepoint) {
|
||||
return codepoint <= 0x1F || (codepoint >= 0x7F && codepoint <= 0x9F);
|
||||
}
|
||||
|
||||
function keysym_from_charcode(codepoint) {
|
||||
|
||||
// Keysyms for control characters
|
||||
if (isControlCharacter(codepoint)) return 0xFF00 | codepoint;
|
||||
|
||||
// Keysyms for ASCII chars
|
||||
if (codepoint >= 0x0000 && codepoint <= 0x00FF)
|
||||
return codepoint;
|
||||
|
||||
// Keysyms for Unicode
|
||||
if (codepoint >= 0x0100 && codepoint <= 0x10FFFF)
|
||||
return 0x01000000 | codepoint;
|
||||
|
||||
return null;
|
||||
|
||||
}
|
||||
|
||||
function keysym_from_keycode(keyCode, location) {
|
||||
|
||||
var keysyms;
|
||||
|
||||
// If not shifted, just return unshifted keysym
|
||||
if (!guac_keyboard.modifiers.shift)
|
||||
keysyms = unshiftedKeysym[keyCode];
|
||||
|
||||
// Otherwise, return shifted keysym, if defined
|
||||
else
|
||||
keysyms = shiftedKeysym[keyCode] || unshiftedKeysym[keyCode];
|
||||
|
||||
return get_keysym(keysyms, location);
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Marks a key as pressed, firing the keydown event if registered. Key
|
||||
* repeat for the pressed key will start after a delay if that key is
|
||||
* not a modifier.
|
||||
*
|
||||
* @private
|
||||
* @param keysym The keysym of the key to press.
|
||||
*/
|
||||
function press_key(keysym) {
|
||||
|
||||
// Don't bother with pressing the key if the key is unknown
|
||||
if (keysym === null) return;
|
||||
|
||||
// Only press if released
|
||||
if (!guac_keyboard.pressed[keysym]) {
|
||||
|
||||
// Mark key as pressed
|
||||
guac_keyboard.pressed[keysym] = true;
|
||||
|
||||
// Send key event
|
||||
if (guac_keyboard.onkeydown) {
|
||||
guac_keyboard.onkeydown(keysym);
|
||||
|
||||
// Stop any current repeat
|
||||
window.clearTimeout(key_repeat_timeout);
|
||||
window.clearInterval(key_repeat_interval);
|
||||
|
||||
// Repeat after a delay as long as pressed
|
||||
if (!no_repeat[keysym])
|
||||
key_repeat_timeout = window.setTimeout(function() {
|
||||
key_repeat_interval = window.setInterval(function() {
|
||||
guac_keyboard.onkeyup(keysym);
|
||||
guac_keyboard.onkeydown(keysym);
|
||||
}, 50);
|
||||
}, 500);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Marks a key as released, firing the keyup event if registered.
|
||||
*
|
||||
* @private
|
||||
* @param keysym The keysym of the key to release.
|
||||
*/
|
||||
function release_key(keysym) {
|
||||
|
||||
// Only release if pressed
|
||||
if (guac_keyboard.pressed[keysym]) {
|
||||
|
||||
// Mark key as released
|
||||
delete guac_keyboard.pressed[keysym];
|
||||
|
||||
// Stop repeat
|
||||
window.clearTimeout(key_repeat_timeout);
|
||||
window.clearInterval(key_repeat_interval);
|
||||
|
||||
// Send key event
|
||||
if (keysym !== null && guac_keyboard.onkeyup)
|
||||
guac_keyboard.onkeyup(keysym);
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Given a keyboard event, updates the local modifier state and remote
|
||||
* key state based on the modifier flags within the event. This function
|
||||
* pays no attention to keycodes.
|
||||
*
|
||||
* @param {KeyboardEvent} e The keyboard event containing the flags to update.
|
||||
*/
|
||||
function update_modifier_state(e) {
|
||||
|
||||
// Get state
|
||||
var state = Guacamole.Keyboard.ModifierState.fromKeyboardEvent(e);
|
||||
|
||||
// Release alt if implicitly released
|
||||
if (guac_keyboard.modifiers.alt && state.alt === false) {
|
||||
release_key(0xFFE9); // Left alt
|
||||
release_key(0xFFEA); // Right alt (or AltGr)
|
||||
}
|
||||
|
||||
// Release shift if implicitly released
|
||||
if (guac_keyboard.modifiers.shift && state.shift === false) {
|
||||
release_key(0xFFE1); // Left shift
|
||||
release_key(0xFFE2); // Right shift
|
||||
}
|
||||
|
||||
// Release ctrl if implicitly released
|
||||
if (guac_keyboard.modifiers.ctrl && state.ctrl === false) {
|
||||
release_key(0xFFE3); // Left ctrl
|
||||
release_key(0xFFE4); // Right ctrl
|
||||
}
|
||||
|
||||
// Release meta if implicitly released
|
||||
if (guac_keyboard.modifiers.meta && state.meta === false) {
|
||||
release_key(0xFFE7); // Left meta
|
||||
release_key(0xFFE8); // Right meta
|
||||
}
|
||||
|
||||
// Release hyper if implicitly released
|
||||
if (guac_keyboard.modifiers.hyper && state.hyper === false) {
|
||||
release_key(0xFFEB); // Left hyper
|
||||
release_key(0xFFEC); // Right hyper
|
||||
}
|
||||
|
||||
// Update state
|
||||
guac_keyboard.modifiers = state;
|
||||
|
||||
}
|
||||
|
||||
// When key pressed
|
||||
element.addEventListener("keydown", function(e) {
|
||||
|
||||
// Only intercept if handler set
|
||||
if (!guac_keyboard.onkeydown) return;
|
||||
|
||||
var keynum;
|
||||
if (window.event) keynum = window.event.keyCode;
|
||||
else if (e.which) keynum = e.which;
|
||||
|
||||
// Get key location
|
||||
var location = e.location || e.keyLocation || 0;
|
||||
|
||||
// Ignore any unknown key events
|
||||
if (!keynum && !identifier) {
|
||||
e.preventDefault();
|
||||
return;
|
||||
}
|
||||
|
||||
// Fix modifier states
|
||||
update_modifier_state(e);
|
||||
|
||||
// Try to get keysym from keycode
|
||||
var keysym = keysym_from_keycode(keynum, location);
|
||||
|
||||
// Also try to get get keysym from e.key
|
||||
if (e.key)
|
||||
keysym = keysym || keysym_from_key_identifier(
|
||||
guac_keyboard.modifiers.shift, e.key, location);
|
||||
|
||||
// If no e.key, use e.keyIdentifier if absolutely necessary (can be buggy)
|
||||
else {
|
||||
|
||||
var keypress_unlikely = guac_keyboard.modifiers.ctrl
|
||||
|| guac_keyboard.modifiers.alt
|
||||
|| guac_keyboard.modifiers.meta
|
||||
|| guac_keyboard.modifiers.hyper;
|
||||
|
||||
if (keypress_unlikely && e.keyIdentifier)
|
||||
keysym = keysym || keysym_from_key_identifier(
|
||||
guac_keyboard.modifiers.shift, e.keyIdentifier, location);
|
||||
|
||||
}
|
||||
|
||||
// Press key if known
|
||||
if (keysym !== null) {
|
||||
|
||||
e.preventDefault();
|
||||
keydownChar[keynum] = keysym;
|
||||
press_key(keysym);
|
||||
|
||||
// If a key is pressed while meta is held down, the keyup will
|
||||
// never be sent in Chrome, so send it now. (bug #108404)
|
||||
if (guac_keyboard.modifiers.meta && keysym !== 0xFFE7 && keysym !== 0xFFE8)
|
||||
release_key(keysym);
|
||||
|
||||
}
|
||||
|
||||
}, true);
|
||||
|
||||
// When key pressed
|
||||
element.addEventListener("keypress", function(e) {
|
||||
|
||||
// Only intercept if handler set
|
||||
if (!guac_keyboard.onkeydown && !guac_keyboard.onkeyup) return;
|
||||
|
||||
e.preventDefault();
|
||||
|
||||
var keynum;
|
||||
if (window.event) keynum = window.event.keyCode;
|
||||
else if (e.which) keynum = e.which;
|
||||
|
||||
var keysym = keysym_from_charcode(keynum);
|
||||
|
||||
// Fix modifier states
|
||||
update_modifier_state(e);
|
||||
|
||||
// If event identified as a typable character, and we're holding Ctrl+Alt,
|
||||
// assume Ctrl+Alt is actually AltGr, and release both.
|
||||
if (!isControlCharacter(keynum) && guac_keyboard.modifiers.ctrl && guac_keyboard.modifiers.alt) {
|
||||
release_key(0xFFE3); // Left ctrl
|
||||
release_key(0xFFE4); // Right ctrl
|
||||
release_key(0xFFE9); // Left alt
|
||||
release_key(0xFFEA); // Right alt
|
||||
}
|
||||
|
||||
// Send press + release if keysym known
|
||||
if (keysym !== null) {
|
||||
press_key(keysym);
|
||||
release_key(keysym);
|
||||
}
|
||||
|
||||
}, true);
|
||||
|
||||
// When key released
|
||||
element.addEventListener("keyup", function(e) {
|
||||
|
||||
// Only intercept if handler set
|
||||
if (!guac_keyboard.onkeyup) return;
|
||||
|
||||
e.preventDefault();
|
||||
|
||||
var keynum;
|
||||
if (window.event) keynum = window.event.keyCode;
|
||||
else if (e.which) keynum = e.which;
|
||||
|
||||
// Fix modifier states
|
||||
update_modifier_state(e);
|
||||
|
||||
// Send release event if original key known
|
||||
var keysym = keydownChar[keynum];
|
||||
if (keysym !== null)
|
||||
release_key(keysym);
|
||||
|
||||
// Clear character record
|
||||
keydownChar[keynum] = null;
|
||||
|
||||
}, true);
|
||||
|
||||
};
|
||||
|
||||
/**
|
||||
* The state of all supported keyboard modifiers.
|
||||
* @constructor
|
||||
*/
|
||||
Guacamole.Keyboard.ModifierState = function() {
|
||||
|
||||
/**
|
||||
* Whether shift is currently pressed.
|
||||
* @type Boolean
|
||||
*/
|
||||
this.shift = false;
|
||||
|
||||
/**
|
||||
* Whether ctrl is currently pressed.
|
||||
* @type Boolean
|
||||
*/
|
||||
this.ctrl = false;
|
||||
|
||||
/**
|
||||
* Whether alt is currently pressed.
|
||||
* @type Boolean
|
||||
*/
|
||||
this.alt = false;
|
||||
|
||||
/**
|
||||
* Whether meta (apple key) is currently pressed.
|
||||
* @type Boolean
|
||||
*/
|
||||
this.meta = false;
|
||||
|
||||
/**
|
||||
* Whether hyper (windows key) is currently pressed.
|
||||
* @type Boolean
|
||||
*/
|
||||
this.hyper = false;
|
||||
|
||||
};
|
||||
|
||||
/**
|
||||
* Returns the modifier state applicable to the keyboard event given.
|
||||
*
|
||||
* @param {KeyboardEvent} e The keyboard event to read.
|
||||
* @returns {Guacamole.Keyboard.ModifierState} The current state of keyboard
|
||||
* modifiers.
|
||||
*/
|
||||
Guacamole.Keyboard.ModifierState.fromKeyboardEvent = function(e) {
|
||||
|
||||
var state = new Guacamole.Keyboard.ModifierState();
|
||||
|
||||
// Assign states from old flags
|
||||
state.shift = e.shiftKey;
|
||||
state.ctrl = e.ctrlKey;
|
||||
state.alt = e.altKey;
|
||||
state.meta = e.metaKey;
|
||||
|
||||
// Use DOM3 getModifierState() for others
|
||||
if (e.getModifierState) {
|
||||
state.hyper = e.getModifierState("OS")
|
||||
|| e.getModifierState("Super")
|
||||
|| e.getModifierState("Hyper")
|
||||
|| e.getModifierState("Win");
|
||||
}
|
||||
|
||||
return state;
|
||||
|
||||
};
|
||||
Reference in New Issue
Block a user