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* VisualEditor UserInterface Trigger class.
*
* @copyright See AUTHORS.txt
*/
/**
* Key trigger.
*
* @class
*
* @constructor
* @param {jQuery.Event|string} [e] Event or string to create trigger from
* @param {boolean} [allowInvalidPrimary] Allow invalid primary keys
*/
ve.ui.Trigger = function VeUiTrigger( e, allowInvalidPrimary ) {
const keyAliases = ve.ui.Trigger.static.keyAliases,
primaryKeys = ve.ui.Trigger.static.primaryKeys,
primaryKeyMap = ve.ui.Trigger.static.primaryKeyMap;
// Properties
this.modifiers = {
meta: false,
ctrl: false,
alt: false,
shift: false
};
this.primary = false;
// Initialization
if ( e instanceof $.Event ) {
this.modifiers.meta = e.metaKey || false;
this.modifiers.ctrl = e.ctrlKey || false;
this.modifiers.alt = e.altKey || false;
this.modifiers.shift = e.shiftKey || false;
this.primary = primaryKeyMap[ e.which ] || false;
} else if ( typeof e === 'string' ) {
// Normalization: remove whitespace and force lowercase
const parts = e.replace( /\s+/g, '' ).toLowerCase().split( '+' );
for ( let i = 0, len = parts.length; i < len; i++ ) {
let key = parts[ i ];
// Resolve key aliases
if ( Object.prototype.hasOwnProperty.call( keyAliases, key ) ) {
key = keyAliases[ key ];
}
// Apply key to trigger
if ( Object.prototype.hasOwnProperty.call( this.modifiers, key ) ) {
// Modifier key
this.modifiers[ key ] = true;
} else Eif ( primaryKeys.indexOf( key ) !== -1 || allowInvalidPrimary ) {
// WARNING: Only the last primary key will be used
this.primary = key;
}
}
}
};
/* Inheritance */
OO.initClass( ve.ui.Trigger );
/* Static Properties */
/**
* @property {string[]} Symbolic modifier key names. The order of this array affects the canonical order of a trigger string.
*
* @static
* @inheritable
*/
ve.ui.Trigger.static.modifierKeys = [ 'meta', 'ctrl', 'alt', 'shift' ];
/**
* @property {string[]} Symbolic primary key names.
*
* @static
* @inheritable
*/
ve.ui.Trigger.static.primaryKeys = [
// Special keys
'backspace',
'tab',
'enter',
'escape',
'space',
'page-up',
'page-down',
'end',
'home',
'left',
'up',
'right',
'down',
'insert',
'delete',
'clear',
// Numbers
'0',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
// Letters
'a',
'b',
'c',
'd',
'e',
'f',
'g',
'h',
'i',
'j',
'k',
'l',
'm',
'n',
'o',
'p',
'q',
'r',
's',
't',
'u',
'v',
'w',
'x',
'y',
'z',
// Numpad special keys
'multiply',
'add',
'subtract',
'decimal',
'divide',
// Function keys
'f1',
'f2',
'f3',
'f4',
'f5',
'f6',
'f7',
'f8',
'f9',
'f10',
'f11',
'f12',
// Punctuation
';',
'=',
',',
'-',
'.',
'/',
'`',
'[',
'\\',
']',
'\''
];
/**
* @property {Object} Mappings to use when rendering string for a specific platform.
*
* @static
* @inheritable
*/
ve.ui.Trigger.static.platformMapping = {
mac: {
alt: '⌥',
backspace: '⌫',
ctrl: '^',
delete: '⌦',
down: '↓',
end: '↗',
// Technically 'enter' is ⌤, but JS doesn't distinguish between 'enter' and
// 'return', and the return-arrow is better known
enter: '⏎',
escape: '⎋',
home: '↖',
left: '←',
meta: '⌘',
'page-down': '⇟',
'page-up': '⇞',
right: '→',
shift: '⇧',
space: '␣',
tab: '⇥',
up: '↑'
}
};
/**
* @property {Object} Symbol to use when concatenating keys in a sequence.
*
* @static
* @inheritable
*/
ve.ui.Trigger.static.platformStringJoiners = {
default: '+',
mac: ''
};
/**
* @property {string[]} Special keys which have i18n messages
*
* @static
* @inheritable
*/
ve.ui.Trigger.static.translatableKeys = [
'alt',
'backspace',
'ctrl',
'delete',
'down',
'end',
'enter',
'escape',
'home',
'insert',
'left',
'meta',
'page-down',
'page-up',
'right',
'shift',
'space',
'tab',
'up'
];
/**
* @property {Object} Aliases for modifier or primary key names.
*
* @static
* @inheritable
*/
ve.ui.Trigger.static.keyAliases = {
// Platform differences
command: 'meta',
apple: 'meta',
windows: 'meta',
option: 'alt',
return: 'enter',
// Shorthand
esc: 'escape',
cmd: 'meta',
del: 'delete',
// Longhand
control: 'ctrl',
alternate: 'alt',
// Symbols
'⌘': 'meta',
'⎇': 'alt',
'⇧': 'shift',
'⏎': 'enter',
'⌫': 'backspace',
'⎋': 'escape'
};
/**
* @property {Object} Mapping of key codes and symbolic key names.
*
* @static
* @inheritable
*/
ve.ui.Trigger.static.primaryKeyMap = {
// Special keys
8: 'backspace',
9: 'tab',
12: 'clear',
13: 'enter',
27: 'escape',
32: 'space',
33: 'page-up',
34: 'page-down',
35: 'end',
36: 'home',
37: 'left',
38: 'up',
39: 'right',
40: 'down',
45: 'insert',
46: 'delete',
// Numbers
48: '0',
49: '1',
50: '2',
51: '3',
52: '4',
53: '5',
54: '6',
55: '7',
56: '8',
57: '9',
// Punctuation
59: ';',
61: '=',
// Letters
65: 'a',
66: 'b',
67: 'c',
68: 'd',
69: 'e',
70: 'f',
71: 'g',
72: 'h',
73: 'i',
74: 'j',
75: 'k',
76: 'l',
77: 'm',
78: 'n',
79: 'o',
80: 'p',
81: 'q',
82: 'r',
83: 's',
84: 't',
85: 'u',
86: 'v',
87: 'w',
88: 'x',
89: 'y',
90: 'z',
// Numpad numbers
96: '0',
97: '1',
98: '2',
99: '3',
100: '4',
101: '5',
102: '6',
103: '7',
104: '8',
105: '9',
// Numpad special keys
106: 'multiply',
107: 'add',
109: 'subtract',
110: 'decimal',
111: 'divide',
// Function keys
112: 'f1',
113: 'f2',
114: 'f3',
115: 'f4',
116: 'f5',
117: 'f6',
118: 'f7',
119: 'f8',
120: 'f9',
121: 'f10',
122: 'f11',
123: 'f12',
// Punctuation
186: ';',
187: '=',
188: ',',
189: '-',
190: '.',
191: '/',
192: '`',
219: '[',
220: '\\',
221: ']',
222: '\''
};
/* Methods */
/**
* Check if trigger is complete.
*
* For a trigger to be complete, there must be a valid primary key.
*
* @return {boolean} Trigger is complete
*/
ve.ui.Trigger.prototype.isComplete = function () {
return this.primary !== false;
};
/**
* Get a trigger string.
*
* Trigger strings are canonical representations of triggers made up of the symbolic names of all
* active modifier keys and the primary key joined together with a '+' sign.
*
* To normalize a trigger string simply create a new trigger from a string and then run this method.
*
* An incomplete trigger will return an empty string.
*
* @return {string} Canonical trigger string
*/
ve.ui.Trigger.prototype.toString = function () {
const modifierKeys = ve.ui.Trigger.static.modifierKeys,
keys = [];
// Add modifier keywords in the correct order
for ( let i = 0, len = modifierKeys.length; i < len; i++ ) {
if ( this.modifiers[ modifierKeys[ i ] ] ) {
keys.push( modifierKeys[ i ] );
}
}
// Check that there were modifiers and the primary key is whitelisted
Eif ( this.primary ) {
// Add a symbolic name for the primary key
keys.push( this.primary );
return keys.join( '+' );
}
// Alternatively return an empty string
return '';
};
/**
* Get a trigger message.
*
* This is similar to #toString but the resulting string will be formatted in a way that makes it
* appear more native for the platform, and special keys will be translated.
*
* @param {boolean} [explode=false] Whether to return the message split up into some
* reasonable sequence of inputs required
* @return {string[]|string} Seprate key messages, or a joined string
*/
ve.ui.Trigger.prototype.getMessage = function ( explode ) {
const hasOwn = Object.prototype.hasOwnProperty,
translatableKeys = this.constructor.static.translatableKeys,
platformMapping = this.constructor.static.platformMapping,
platform = ve.getSystemPlatform();
let keys = this.toString().split( '+' );
// Platform mappings
Iif ( hasOwn.call( platformMapping, platform ) ) {
keys = keys.map( ( key ) => hasOwn.call( platformMapping[ platform ], key ) ? platformMapping[ platform ][ key ] : key );
}
// The following messages are used here:
// * visualeditor-key-alt
// * visualeditor-key-backspace
// * visualeditor-key-ctrl
// * visualeditor-key-delete
// * visualeditor-key-down
// * visualeditor-key-end
// * visualeditor-key-enter
// * visualeditor-key-escape
// * visualeditor-key-home
// * visualeditor-key-insert
// * visualeditor-key-left
// * visualeditor-key-meta
// * visualeditor-key-page-down
// * visualeditor-key-page-up
// * visualeditor-key-right
// * visualeditor-key-shift
// * visualeditor-key-space
// * visualeditor-key-tab
// * visualeditor-key-up
keys = keys.map( ( key ) => translatableKeys.indexOf( key ) !== -1 ? ve.msg( 'visualeditor-key-' + key ) : key.toUpperCase() );
// Concatenation
Iif ( explode ) {
return keys;
} else {
const joiners = this.constructor.static.platformStringJoiners;
const joiner = hasOwn.call( joiners, platform ) ? joiners[ platform ] : joiners.default;
return keys.join( joiner );
}
};
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