/usr/local/lib/node_modules/pm2/node_modules/@pm2/blessed/lib/widgets
Edit: /usr/local/lib/node_modules/pm2/node_modules/@pm2/blessed/lib/widgets/textarea.js (7766B)
/**
* textarea.js - textarea element for blessed
* Copyright (c) 2013-2015, Christopher Jeffrey and contributors (MIT License).
* https://github.com/chjj/blessed
*/
/**
* Modules
*/
var unicode = require('../unicode');
var nextTick = global.setImmediate || process.nextTick.bind(process);
var Node = require('./node');
var Input = require('./input');
/**
* Textarea
*/
function Textarea(options) {
var self = this;
if (!(this instanceof Node)) {
return new Textarea(options);
}
options = options || {};
options.scrollable = options.scrollable !== false;
Input.call(this, options);
this.screen._listenKeys(this);
this.value = options.value || '';
this.__updateCursor = this._updateCursor.bind(this);
this.on('resize', this.__updateCursor);
this.on('move', this.__updateCursor);
if (options.inputOnFocus) {
this.on('focus', this.readInput.bind(this, null));
}
if (!options.inputOnFocus && options.keys) {
this.on('keypress', function(ch, key) {
if (self._reading) return;
if (key.name === 'enter' || (options.vi && key.name === 'i')) {
return self.readInput();
}
if (key.name === 'e') {
return self.readEditor();
}
});
}
if (options.mouse) {
this.on('click', function(data) {
if (self._reading) return;
if (data.button !== 'right') return;
self.readEditor();
});
}
}
Textarea.prototype.__proto__ = Input.prototype;
Textarea.prototype.type = 'textarea';
Textarea.prototype._updateCursor = function(get) {
if (this.screen.focused !== this) {
return;
}
var lpos = get ? this.lpos : this._getCoords();
if (!lpos) return;
var last = this._clines[this._clines.length - 1]
, program = this.screen.program
, line
, cx
, cy;
// Stop a situation where the textarea begins scrolling
// and the last cline appears to always be empty from the
// _typeScroll `+ '\n'` thing.
// Maybe not necessary anymore?
if (last === '' && this.value[this.value.length - 1] !== '\n') {
last = this._clines[this._clines.length - 2] || '';
}
line = Math.min(
this._clines.length - 1 - (this.childBase || 0),
(lpos.yl - lpos.yi) - this.iheight - 1);
// When calling clearValue() on a full textarea with a border, the first
// argument in the above Math.min call ends up being -2. Make sure we stay
// positive.
line = Math.max(0, line);
cy = lpos.yi + this.itop + line;
cx = lpos.xi + this.ileft + this.strWidth(last);
// XXX Not sure, but this may still sometimes
// cause problems when leaving editor.
if (cy === program.y && cx === program.x) {
return;
}
if (cy === program.y) {
if (cx > program.x) {
program.cuf(cx - program.x);
} else if (cx < program.x) {
program.cub(program.x - cx);
}
} else if (cx === program.x) {
if (cy > program.y) {
program.cud(cy - program.y);
} else if (cy < program.y) {
program.cuu(program.y - cy);
}
} else {
program.cup(cy, cx);
}
};
Textarea.prototype.input =
Textarea.prototype.setInput =
Textarea.prototype.readInput = function(callback) {
var self = this
, focused = this.screen.focused === this;
if (this._reading) return;
this._reading = true;
this._callback = callback;
if (!focused) {
this.screen.saveFocus();
this.focus();
}
this.screen.grabKeys = true;
this._updateCursor();
this.screen.program.showCursor();
//this.screen.program.sgr('normal');
this._done = function fn(err, value) {
if (!self._reading) return;
if (fn.done) return;
fn.done = true;
self._reading = false;
delete self._callback;
delete self._done;
self.removeListener('keypress', self.__listener);
delete self.__listener;
self.removeListener('blur', self.__done);
delete self.__done;
self.screen.program.hideCursor();
self.screen.grabKeys = false;
if (!focused) {
self.screen.restoreFocus();
}
if (self.options.inputOnFocus) {
self.screen.rewindFocus();
}
// Ugly
if (err === 'stop') return;
if (err) {
self.emit('error', err);
} else if (value != null) {
self.emit('submit', value);
} else {
self.emit('cancel', value);
}
self.emit('action', value);
if (!callback) return;
return err
? callback(err)
: callback(null, value);
};
// Put this in a nextTick so the current
// key event doesn't trigger any keys input.
nextTick(function() {
self.__listener = self._listener.bind(self);
self.on('keypress', self.__listener);
});
this.__done = this._done.bind(this, null, null);
this.on('blur', this.__done);
};
Textarea.prototype._listener = function(ch, key) {
var done = this._done
, value = this.value;
if (key.name === 'return') return;
if (key.name === 'enter') {
ch = '\n';
}
// TODO: Handle directional keys.
if (key.name === 'left' || key.name === 'right'
|| key.name === 'up' || key.name === 'down') {
;
}
if (this.options.keys && key.ctrl && key.name === 'e') {
return this.readEditor();
}
// TODO: Optimize typing by writing directly
// to the screen and screen buffer here.
if (key.name === 'escape') {
done(null, null);
} else if (key.name === 'backspace') {
if (this.value.length) {
if (this.screen.fullUnicode) {
if (unicode.isSurrogate(this.value, this.value.length - 2)) {
// || unicode.isCombining(this.value, this.value.length - 1)) {
this.value = this.value.slice(0, -2);
} else {
this.value = this.value.slice(0, -1);
}
} else {
this.value = this.value.slice(0, -1);
}
}
} else if (ch) {
if (!/^[\x00-\x08\x0b-\x0c\x0e-\x1f\x7f]$/.test(ch)) {
this.value += ch;
}
}
if (this.value !== value) {
this.screen.render();
}
};
Textarea.prototype._typeScroll = function() {
// XXX Workaround
var height = this.height - this.iheight;
if (this._clines.length - this.childBase > height) {
this.scroll(this._clines.length);
}
};
Textarea.prototype.getValue = function() {
return this.value;
};
Textarea.prototype.setValue = function(value) {
if (value == null) {
value = this.value;
}
if (this._value !== value) {
this.value = value;
this._value = value;
this.setContent(this.value);
this._typeScroll();
this._updateCursor();
}
};
Textarea.prototype.clearInput =
Textarea.prototype.clearValue = function() {
return this.setValue('');
};
Textarea.prototype.submit = function() {
if (!this.__listener) return;
return this.__listener('\x1b', { name: 'escape' });
};
Textarea.prototype.cancel = function() {
if (!this.__listener) return;
return this.__listener('\x1b', { name: 'escape' });
};
Textarea.prototype.render = function() {
this.setValue();
return this._render();
};
Textarea.prototype.editor =
Textarea.prototype.setEditor =
Textarea.prototype.readEditor = function(callback) {
var self = this;
if (this._reading) {
var _cb = this._callback
, cb = callback;
this._done('stop');
callback = function(err, value) {
if (_cb) _cb(err, value);
if (cb) cb(err, value);
};
}
if (!callback) {
callback = function() {};
}
return this.screen.readEditor({ value: this.value }, function(err, value) {
if (err) {
if (err.message === 'Unsuccessful.') {
self.screen.render();
return self.readInput(callback);
}
self.screen.render();
self.readInput(callback);
return callback(err);
}
self.setValue(value);
self.screen.render();
return self.readInput(callback);
});
};
/**
* Expose
*/
module.exports = Textarea;