gs-events
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<li data-ice="doc"><span data-ice="kind" class="kind-class">C</span><span data-ice="name"><span><a href="class/src/CustomEvent.js~CustomEvent.html">CustomEvent</a></span></span></li>
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<li data-ice="doc"><span data-ice="kind" class="kind-interface">I</span><span data-ice="name"><span><a href="class/src/IEventDispatcher.js~IEventDispatcher.html">IEventDispatcher</a></span></span></li>
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<div class="content" data-ice="content"><h1 data-ice="title">src/EventListenerOptions.js</h1>
<pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">/// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/// @Copyright ~2018 ☜Samlv9☞ and other contributors
/// @MIT-LICENSE | 1.0.0 | https://api.guless.com/
/// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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/// furnished to do so, subject to the following conditions:
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/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
/// THE SOFTWARE.
import IEventDispatcher from "./IEventDispatcher";
import IEventListenerOptions from "./IEventListenerOptions";
/**
* 定义侦听器配置选项。
* @implements {IEventListenerOptions}
* @see {@link EventListener}
* @see {@link EventDispatcher}
* @since 1.0.0
*/
export default class EventListenerOptions /*< implements IEventListenerOptions >*/ {
/**
* 创建一个侦听器选项对象。
*
* @param {IEventDispatcher} [scope=null] - 指定侦听器的作用域对象。
* @param {Boolean} [once=false] - 指示侦听器是否在执行后,自动从派发器中移除。
* @param {Boolean} [useCapture=false] - 指示侦听器是否在捕获阶段处理事件。
* @param {Number} [priority=0] - 指示侦听器在派发事件时的优先级(事件派发时会优先执行高优先级的侦听器)。
* @since 1.0.0
*/
constructor( scope = null, once = false, useCapture = false, priority = 0 ) {
/**
* @type {IEventDispatcher}
*/
this._scope = scope;
/**
* @type {Boolean}
*/
this._once = once;
/**
* @type {Boolean}
*/
this._useCapture = useCapture;
/**
* @type {Number}
*/
this._priority = priority;
}
/**
* 获取侦听器的作用域对象。
* @type {IEventDispatcher}
* @since 1.0.0
*/
get scope() {
return this._scope;
}
/**
* 指示侦听器是否在执行后,自动从派发器中移除。
* @type {Boolean}
* @since 1.0.0
*/
get once() {
return this._once;
}
/**
* 指示侦听器是否在捕获阶段处理事件。
* @type {Boolean}
* @since 1.0.0
*/
get useCapture() {
return this._useCapture;
}
/**
* 指示侦听器在派发事件时的优先级。
* @type {Number}
* @since 1.0.0
*/
get priority() {
return this._priority;
}
/**
* 使用自定义的参数,初始化当前配置选项。
*
* - 如果 `options` 是一个 `Boolean` 类型的值,则将 `options` 视为 {@link EventListenerOptions#useCapture}。
* - 如果 `options` 是一个 `IEventListenerOptions` 类型的值,则拷贝 `options` 的值到当前配置选项中。
* @param {Boolean|IEventListenerOptions} [options=false] - 指定侦听器的配置选项。
* @example
* const dispatcher = new EventDispatcher();
* const options = new EventListenerOptions();
* options.initWithParams({ "once": true, "scope": this });
*
* dispatcher.addEventListener("custom", ( evt ) => {
* /// 该事件侦听器在执行后,会自动从 `dispatcher` 派发器中移除。
* console.log("success");
* }, options);
*
* dispatcher.dispatchEvent(new Event("custom", false, false));
* @returns {this}
* @since 1.0.0
*/
initWithParams( options = false ) {
if ( typeof options == "boolean" ) {
this._useCapture = options;
}
else {
if ( options.scope !== void 0 ) { this._scope = options.scope; }
if ( options.once !== void 0 ) { this._once = options.once; }
if ( options.useCapture !== void 0 ) { this._useCapture = options.useCapture; }
if ( options.priority !== void 0 ) { this._priority = options.priority; }
}
return this;
}
}</code></pre>
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