/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/list.js (15268B)
/**
* list.js - list element for blessed
* Copyright (c) 2013-2015, Christopher Jeffrey and contributors (MIT License).
* https://github.com/chjj/blessed
*/
/**
* Modules
*/
var helpers = require('../helpers');
var Node = require('./node');
var Box = require('./box');
/**
* List
*/
function List(options) {
var self = this;
if (!(this instanceof Node)) {
return new List(options);
}
options = options || {};
options.ignoreKeys = true;
// Possibly put this here: this.items = [];
options.scrollable = true;
Box.call(this, options);
this.value = '';
this.items = [];
this.ritems = [];
this.selected = 0;
this._isList = true;
if (!this.style.selected) {
this.style.selected = {};
this.style.selected.bg = options.selectedBg;
this.style.selected.fg = options.selectedFg;
this.style.selected.bold = options.selectedBold;
this.style.selected.underline = options.selectedUnderline;
this.style.selected.blink = options.selectedBlink;
this.style.selected.inverse = options.selectedInverse;
this.style.selected.invisible = options.selectedInvisible;
}
if (!this.style.item) {
this.style.item = {};
this.style.item.bg = options.itemBg;
this.style.item.fg = options.itemFg;
this.style.item.bold = options.itemBold;
this.style.item.underline = options.itemUnderline;
this.style.item.blink = options.itemBlink;
this.style.item.inverse = options.itemInverse;
this.style.item.invisible = options.itemInvisible;
}
// Legacy: for apps written before the addition of item attributes.
['bg', 'fg', 'bold', 'underline',
'blink', 'inverse', 'invisible'].forEach(function(name) {
if (self.style[name] != null && self.style.item[name] == null) {
self.style.item[name] = self.style[name];
}
});
if (this.options.itemHoverBg) {
this.options.itemHoverEffects = { bg: this.options.itemHoverBg };
}
if (this.options.itemHoverEffects) {
this.style.item.hover = this.options.itemHoverEffects;
}
if (this.options.itemFocusEffects) {
this.style.item.focus = this.options.itemFocusEffects;
}
this.interactive = options.interactive !== false;
this.mouse = options.mouse || false;
if (options.items) {
this.ritems = options.items;
options.items.forEach(this.add.bind(this));
}
this.select(0);
if (options.mouse) {
this.screen._listenMouse(this);
this.on('element wheeldown', function() {
self.select(self.selected + 2);
self.screen.render();
});
this.on('element wheelup', function() {
self.select(self.selected - 2);
self.screen.render();
});
}
if (options.keys) {
this.on('keypress', function(ch, key) {
if (key.name === 'up' || (options.vi && key.name === 'k')) {
self.up();
self.screen.render();
return;
}
if (key.name === 'down' || (options.vi && key.name === 'j')) {
self.down();
self.screen.render();
return;
}
if (key.name === 'enter'
|| (options.vi && key.name === 'l' && !key.shift)) {
self.enterSelected();
return;
}
if (key.name === 'escape' || (options.vi && key.name === 'q')) {
self.cancelSelected();
return;
}
if (options.vi && key.name === 'u' && key.ctrl) {
self.move(-((self.height - self.iheight) / 2) | 0);
self.screen.render();
return;
}
if (options.vi && key.name === 'd' && key.ctrl) {
self.move((self.height - self.iheight) / 2 | 0);
self.screen.render();
return;
}
if (options.vi && key.name === 'b' && key.ctrl) {
self.move(-(self.height - self.iheight));
self.screen.render();
return;
}
if (options.vi && key.name === 'f' && key.ctrl) {
self.move(self.height - self.iheight);
self.screen.render();
return;
}
if (options.vi && key.name === 'h' && key.shift) {
self.move(self.childBase - self.selected);
self.screen.render();
return;
}
if (options.vi && key.name === 'm' && key.shift) {
// TODO: Maybe use Math.min(this.items.length,
// ... for calculating visible items elsewhere.
var visible = Math.min(
self.height - self.iheight,
self.items.length) / 2 | 0;
self.move(self.childBase + visible - self.selected);
self.screen.render();
return;
}
if (options.vi && key.name === 'l' && key.shift) {
// XXX This goes one too far on lists with an odd number of items.
self.down(self.childBase
+ Math.min(self.height - self.iheight, self.items.length)
- self.selected);
self.screen.render();
return;
}
if (options.vi && key.name === 'g' && !key.shift) {
self.select(0);
self.screen.render();
return;
}
if (options.vi && key.name === 'g' && key.shift) {
self.select(self.items.length - 1);
self.screen.render();
return;
}
if (options.vi && (key.ch === '/' || key.ch === '?')) {
if (typeof self.options.search !== 'function') {
return;
}
return self.options.search(function(err, value) {
if (typeof err === 'string' || typeof err === 'function'
|| typeof err === 'number' || (err && err.test)) {
value = err;
err = null;
}
if (err || !value) return self.screen.render();
self.select(self.fuzzyFind(value, key.ch === '?'));
self.screen.render();
});
}
});
}
this.on('resize', function() {
var visible = self.height - self.iheight;
// if (self.selected < visible - 1) {
if (visible >= self.selected + 1) {
self.childBase = 0;
self.childOffset = self.selected;
} else {
// Is this supposed to be: self.childBase = visible - self.selected + 1; ?
self.childBase = self.selected - visible + 1;
self.childOffset = visible - 1;
}
});
this.on('adopt', function(el) {
if (!~self.items.indexOf(el)) {
el.fixed = true;
}
});
// Ensure children are removed from the
// item list if they are items.
this.on('remove', function(el) {
self.removeItem(el);
});
}
List.prototype.__proto__ = Box.prototype;
List.prototype.type = 'list';
List.prototype.createItem = function(content) {
var self = this;
// Note: Could potentially use Button here.
var options = {
screen: this.screen,
content: content,
align: this.align || 'left',
top: 0,
left: 0,
right: (this.scrollbar ? 1 : 0),
tags: this.parseTags,
height: 1,
hoverEffects: this.mouse ? this.style.item.hover : null,
focusEffects: this.mouse ? this.style.item.focus : null,
autoFocus: false
};
if (!this.screen.autoPadding) {
options.top = 1;
options.left = this.ileft;
options.right = this.iright + (this.scrollbar ? 1 : 0);
}
// if (this.shrink) {
// XXX NOTE: Maybe just do this on all shrinkage once autoPadding is default?
if (this.shrink && this.options.normalShrink) {
delete options.right;
options.width = 'shrink';
}
['bg', 'fg', 'bold', 'underline',
'blink', 'inverse', 'invisible'].forEach(function(name) {
options[name] = function() {
var attr = self.items[self.selected] === item && self.interactive
? self.style.selected[name]
: self.style.item[name];
if (typeof attr === 'function') attr = attr(item);
return attr;
};
});
if (this.style.transparent) {
options.transparent = true;
}
var item = new Box(options);
if (this.mouse) {
item.on('click', function() {
self.focus();
if (self.items[self.selected] === item) {
self.emit('action', item, self.selected);
self.emit('select', item, self.selected);
return;
}
self.select(item);
self.screen.render();
});
}
this.emit('create item');
return item;
};
List.prototype.add =
List.prototype.addItem =
List.prototype.appendItem = function(content) {
content = typeof content === 'string' ? content : content.getContent();
var item = this.createItem(content);
item.position.top = this.items.length;
if (!this.screen.autoPadding) {
item.position.top = this.itop + this.items.length;
}
this.ritems.push(content);
this.items.push(item);
this.append(item);
if (this.items.length === 1) {
this.select(0);
}
this.emit('add item');
return item;
};
List.prototype.removeItem = function(child) {
var i = this.getItemIndex(child);
if (~i && this.items[i]) {
child = this.items.splice(i, 1)[0];
this.ritems.splice(i, 1);
this.remove(child);
for (var j = i; j < this.items.length; j++) {
this.items[j].position.top--;
}
if (i === this.selected) {
this.select(i - 1);
}
}
this.emit('remove item');
return child;
};
List.prototype.insertItem = function(child, content) {
content = typeof content === 'string' ? content : content.getContent();
var i = this.getItemIndex(child);
if (!~i) return;
if (i >= this.items.length) return this.appendItem(content);
var item = this.createItem(content);
for (var j = i; j < this.items.length; j++) {
this.items[j].position.top++;
}
item.position.top = i + (!this.screen.autoPadding ? 1 : 0);
this.ritems.splice(i, 0, content);
this.items.splice(i, 0, item);
this.append(item);
if (i === this.selected) {
this.select(i + 1);
}
this.emit('insert item');
};
List.prototype.getItem = function(child) {
return this.items[this.getItemIndex(child)];
};
List.prototype.setItem = function(child, content) {
content = typeof content === 'string' ? content : content.getContent();
var i = this.getItemIndex(child);
if (!~i) return;
this.items[i].setContent(content);
this.ritems[i] = content;
};
List.prototype.clearItems = function() {
return this.setItems([]);
};
List.prototype.setItems = function(items) {
var original = this.items.slice()
, selected = this.selected
, sel = this.ritems[this.selected]
, i = 0;
items = items.slice();
this.select(0);
for (; i < items.length; i++) {
if (this.items[i]) {
this.items[i].setContent(items[i]);
} else {
this.add(items[i]);
}
}
for (; i < original.length; i++) {
this.remove(original[i]);
}
this.ritems = items;
// Try to find our old item if it still exists.
sel = items.indexOf(sel);
if (~sel) {
this.select(sel);
} else if (items.length === original.length) {
this.select(selected);
} else {
this.select(Math.min(selected, items.length - 1));
}
this.emit('set items');
};
List.prototype.pushItem = function(content) {
this.appendItem(content);
return this.items.length;
};
List.prototype.popItem = function() {
return this.removeItem(this.items.length - 1);
};
List.prototype.unshiftItem = function(content) {
this.insertItem(0, content);
return this.items.length;
};
List.prototype.shiftItem = function() {
return this.removeItem(0);
};
List.prototype.spliceItem = function(child, n) {
var self = this;
var i = this.getItemIndex(child);
if (!~i) return;
var items = Array.prototype.slice.call(arguments, 2);
var removed = [];
while (n--) {
removed.push(this.removeItem(i));
}
items.forEach(function(item) {
self.insertItem(i++, item);
});
return removed;
};
List.prototype.find =
List.prototype.fuzzyFind = function(search, back) {
var start = this.selected + (back ? -1 : 1)
, i;
if (typeof search === 'number') search += '';
if (search && search[0] === '/' && search[search.length - 1] === '/') {
try {
search = new RegExp(search.slice(1, -1));
} catch (e) {
;
}
}
var test = typeof search === 'string'
? function(item) { return !!~item.indexOf(search); }
: (search.test ? search.test.bind(search) : search);
if (typeof test !== 'function') {
if (this.screen.options.debug) {
throw new Error('fuzzyFind(): `test` is not a function.');
}
return this.selected;
}
if (!back) {
for (i = start; i < this.ritems.length; i++) {
if (test(helpers.cleanTags(this.ritems[i]))) return i;
}
for (i = 0; i < start; i++) {
if (test(helpers.cleanTags(this.ritems[i]))) return i;
}
} else {
for (i = start; i >= 0; i--) {
if (test(helpers.cleanTags(this.ritems[i]))) return i;
}
for (i = this.ritems.length - 1; i > start; i--) {
if (test(helpers.cleanTags(this.ritems[i]))) return i;
}
}
return this.selected;
};
List.prototype.getItemIndex = function(child) {
if (typeof child === 'number') {
return child;
} else if (typeof child === 'string') {
var i = this.ritems.indexOf(child);
if (~i) return i;
for (i = 0; i < this.ritems.length; i++) {
if (helpers.cleanTags(this.ritems[i]) === child) {
return i;
}
}
return -1;
} else {
return this.items.indexOf(child);
}
};
List.prototype.select = function(index) {
if (!this.interactive) {
return;
}
if (!this.items.length) {
this.selected = 0;
this.value = '';
this.scrollTo(0);
return;
}
if (typeof index === 'object') {
index = this.items.indexOf(index);
}
if (index < 0) {
index = 0;
} else if (index >= this.items.length) {
index = this.items.length - 1;
}
if (this.selected === index && this._listInitialized) return;
this._listInitialized = true;
this.selected = index;
this.value = helpers.cleanTags(this.ritems[this.selected]);
if (!this.parent) return;
this.scrollTo(this.selected);
// XXX Move `action` and `select` events here.
this.emit('select item', this.items[this.selected], this.selected);
};
List.prototype.move = function(offset) {
this.select(this.selected + offset);
};
List.prototype.up = function(offset) {
this.move(-(offset || 1));
};
List.prototype.down = function(offset) {
this.move(offset || 1);
};
List.prototype.pick = function(label, callback) {
if (!callback) {
callback = label;
label = null;
}
if (!this.interactive) {
return callback();
}
var self = this;
var focused = this.screen.focused;
if (focused && focused._done) focused._done('stop');
this.screen.saveFocus();
// XXX Keep above:
// var parent = this.parent;
// this.detach();
// parent.append(this);
this.focus();
this.show();
this.select(0);
if (label) this.setLabel(label);
this.screen.render();
this.once('action', function(el, selected) {
if (label) self.removeLabel();
self.screen.restoreFocus();
self.hide();
self.screen.render();
if (!el) return callback();
return callback(null, helpers.cleanTags(self.ritems[selected]));
});
};
List.prototype.enterSelected = function(i) {
if (i != null) this.select(i);
this.emit('action', this.items[this.selected], this.selected);
this.emit('select', this.items[this.selected], this.selected);
};
List.prototype.cancelSelected = function(i) {
if (i != null) this.select(i);
this.emit('action');
this.emit('cancel');
};
/**
* Expose
*/
module.exports = List;