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Mini Shell
Mini Shell
/**
* log.js - log element for blessed
* Copyright (c) 2013-2015, Christopher Jeffrey and contributors (MIT License).
* https://github.com/chjj/blessed
*/
/**
* Modules
*/
var util = require('util');
var nextTick = global.setImmediate || process.nextTick.bind(process);
var Node = require('./node');
var ScrollableText = require('./scrollabletext');
/**
* Log
*/
function Log(options) {
var self = this;
if (!(this instanceof Node)) {
return new Log(options);
}
options = options || {};
ScrollableText.call(this, options);
this.scrollback = options.scrollback != null
? options.scrollback
: Infinity;
this.scrollOnInput = options.scrollOnInput;
this.on('set content', function() {
if (!self._userScrolled || self.scrollOnInput) {
nextTick(function() {
self.setScrollPerc(100);
self._userScrolled = false;
self.screen.render();
});
}
});
}
Log.prototype.__proto__ = ScrollableText.prototype;
Log.prototype.type = 'log';
Log.prototype.log =
Log.prototype.add = function() {
var args = Array.prototype.slice.call(arguments);
if (typeof args[0] === 'object') {
args[0] = util.inspect(args[0], true, 20, true);
}
var text = util.format.apply(util, args);
this.emit('log', text);
var ret = this.pushLine(text);
if (this._clines.fake.length > this.scrollback) {
this.shiftLine(0, (this.scrollback / 3) | 0);
}
return ret;
};
Log.prototype._scroll = Log.prototype.scroll;
Log.prototype.scroll = function(offset, always) {
if (offset === 0) return this._scroll(offset, always);
this._userScrolled = true;
var ret = this._scroll(offset, always);
if (this.getScrollPerc() === 100) {
this._userScrolled = false;
}
return ret;
};
/**
* Expose
*/
module.exports = Log;
Zerion Mini Shell 1.0