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var KB = {
components: {},
utils: {},
html: {},
http: {},
listeners: {
clicks: {},
changes: {},
keys: [],
internals: {}
}
};
KB.on = function (eventType, callback) {
if (! this.listeners.internals.hasOwnProperty(eventType)) {
this.listeners.internals[eventType] = [];
}
this.listeners.internals[eventType].push(callback);
};
KB.trigger = function (eventType, eventData) {
if (this.listeners.internals.hasOwnProperty(eventType)) {
for (var i = 0; i < this.listeners.internals[eventType].length; i++) {
this.listeners.internals[eventType][i](eventData);
}
}
};
KB.removeListener = function (eventType, callback) {
if (this.listeners.internals.hasOwnProperty(eventType)) {
for (var i = 0; i < this.listeners.internals[eventType].length; i++) {
if (this.listeners.internals[eventType][i] === callback) {
this.listeners.internals[eventType].splice(i, 1);
}
}
}
};
KB.onClick = function (selector, callback, noPreventDefault) {
this.listeners.clicks[selector] = {
callback: callback,
noPreventDefault: noPreventDefault === true
};
};
KB.onChange = function (selector, callback) {
this.listeners.changes[selector] = callback;
};
KB.onKey = function (combination, callback, ignoreInputField, ctrlKey, metaKey) {
this.listeners.keys.push({
'combination': combination,
'callback': callback,
'ignoreInputField': ignoreInputField || false,
'ctrlKey': ctrlKey || false,
'metaKey': metaKey || false
});
};
KB.listen = function () {
var self = this;
var keysQueue = [];
function onClick(e) {
for (var selector in self.listeners.clicks) {
if (self.listeners.clicks.hasOwnProperty(selector) && e.target.matches(selector)) {
if (! self.listeners.clicks[selector].noPreventDefault) {
e.preventDefault();
}
self.listeners.clicks[selector].callback(e);
}
}
}
function onChange(e) {
for (var selector in self.listeners.changes) {
if (self.listeners.changes.hasOwnProperty(selector) && e.target.matches(selector)) {
self.listeners.changes[selector](e.target);
}
}
}
function onKeyPressed(e) {
var key = KB.utils.getKey(e);
var isInputField = KB.utils.isInputField(e);
if (! isInputField || ['Escape', 'Enter'].indexOf(key) !== -1) {
keysQueue.push(key);
}
if (keysQueue.length > 0) {
var reset = true;
for (var i = 0; i < self.listeners.keys.length; i++) {
var params = self.listeners.keys[i];
var combination = params.combination;
var sequence = combination.split('+');
if (KB.utils.arraysIdentical(keysQueue, sequence) &&
e.ctrlKey === params.ctrlKey && e.metaKey === params.metaKey) {
if (isInputField && !params.ignoreInputField) {
keysQueue = [];
return;
}
e.preventDefault();
e.stopPropagation();
keysQueue = [];
params.callback(e);
break;
} else if (KB.utils.arraysStartsWith(keysQueue, sequence) && keysQueue.length < sequence.length) {
reset = false;
}
}
if (reset) {
keysQueue = [];
}
}
}
document.addEventListener('click', onClick, false);
document.addEventListener('change', onChange, false);
window.addEventListener('keydown', onKeyPressed, false);
};
KB.component = function (name, object) {
this.components[name] = object;
};
KB.getComponent = function (name, containerElement, options) {
var object = this.components[name];
return new object(containerElement, options);
};
KB.render = function () {
for (var name in this.components) {
var elementList = document.querySelectorAll('.js-' + name);
for (var i = 0; i < elementList.length; i++) {
if (this.components.hasOwnProperty(name)) {
var options;
if (elementList[i].dataset.params) {
options = JSON.parse(elementList[i].dataset.params);
}
var component = KB.getComponent(name, elementList[i], options);
component.render();
elementList[i].className = elementList[i].className + '-rendered';
}
}
}
};
KB.interval = function (seconds, callback) {
setInterval(callback, seconds * 1000);
};
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