172 lines
4.4 KiB
JavaScript
172 lines
4.4 KiB
JavaScript
/**
|
|
* 打字机效果管理器
|
|
* 负责管理打字机效果的启动、停止、重置等功能
|
|
*/
|
|
class TypewriterManager {
|
|
constructor(options = {}) {
|
|
// 配置选项
|
|
this.options = {
|
|
typingSpeed: 50, // 打字速度(毫秒)
|
|
cursorText: '<text class="typing-cursor">|</text>', // 光标样式
|
|
...options
|
|
};
|
|
|
|
// 状态变量
|
|
this.currentMessageContent = ""; // 当前消息的完整内容
|
|
this.displayedContent = ""; // 已显示的内容
|
|
this.typewriterTimer = null; // 打字机定时器
|
|
this.isTyping = false; // 是否正在打字
|
|
|
|
// 回调函数
|
|
this.onCharacterTyped = null; // 每个字符打字时的回调
|
|
this.onTypingComplete = null; // 打字完成时的回调
|
|
this.onContentUpdate = null; // 内容更新时的回调
|
|
}
|
|
|
|
/**
|
|
* 设置回调函数
|
|
* @param {Object} callbacks - 回调函数对象
|
|
* @param {Function} callbacks.onCharacterTyped - 每个字符打字时的回调
|
|
* @param {Function} callbacks.onTypingComplete - 打字完成时的回调
|
|
* @param {Function} callbacks.onContentUpdate - 内容更新时的回调
|
|
*/
|
|
setCallbacks(callbacks) {
|
|
this.onCharacterTyped = callbacks.onCharacterTyped || null;
|
|
this.onTypingComplete = callbacks.onTypingComplete || null;
|
|
this.onContentUpdate = callbacks.onContentUpdate || null;
|
|
}
|
|
|
|
/**
|
|
* 添加内容到当前消息
|
|
* @param {string} content - 要添加的内容
|
|
*/
|
|
addContent(content) {
|
|
if (typeof content !== 'string') {
|
|
content = String(content);
|
|
}
|
|
this.currentMessageContent += content;
|
|
|
|
// 如果没有在打字,启动打字机效果
|
|
if (!this.isTyping) {
|
|
this.startTypewriter();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 启动打字机效果
|
|
*/
|
|
startTypewriter() {
|
|
if (this.isTyping) return;
|
|
|
|
this.isTyping = true;
|
|
this.displayedContent = "";
|
|
|
|
this._typeNextChar();
|
|
}
|
|
|
|
/**
|
|
* 打字下一个字符(私有方法)
|
|
*/
|
|
_typeNextChar() {
|
|
// 如果已显示内容长度小于完整内容长度,继续打字
|
|
if (this.displayedContent.length < this.currentMessageContent.length) {
|
|
this.displayedContent = this.currentMessageContent.substring(
|
|
0,
|
|
this.displayedContent.length + 1
|
|
);
|
|
|
|
const displayContent = this.displayedContent + this.options.cursorText;
|
|
|
|
// 调用内容更新回调
|
|
if (this.onContentUpdate) {
|
|
this.onContentUpdate(displayContent);
|
|
}
|
|
|
|
// 调用字符打字回调
|
|
if (this.onCharacterTyped) {
|
|
this.onCharacterTyped(this.displayedContent);
|
|
}
|
|
|
|
// 继续下一个字符
|
|
this.typewriterTimer = setTimeout(() => {
|
|
this._typeNextChar();
|
|
}, this.options.typingSpeed);
|
|
} else {
|
|
// 打字完成,移除光标
|
|
if (this.onContentUpdate) {
|
|
this.onContentUpdate(this.currentMessageContent);
|
|
}
|
|
|
|
// 调用打字完成回调
|
|
if (this.onTypingComplete) {
|
|
this.onTypingComplete(this.currentMessageContent);
|
|
}
|
|
|
|
this.stopTypewriter();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 停止打字机效果
|
|
*/
|
|
stopTypewriter() {
|
|
if (this.typewriterTimer) {
|
|
clearTimeout(this.typewriterTimer);
|
|
this.typewriterTimer = null;
|
|
}
|
|
this.isTyping = false;
|
|
}
|
|
|
|
/**
|
|
* 重置打字机状态
|
|
*/
|
|
reset() {
|
|
this.currentMessageContent = "";
|
|
this.displayedContent = "";
|
|
this.stopTypewriter();
|
|
}
|
|
|
|
/**
|
|
* 获取当前状态
|
|
* @returns {Object} 当前状态对象
|
|
*/
|
|
getStatus() {
|
|
return {
|
|
isTyping: this.isTyping,
|
|
currentContent: this.currentMessageContent,
|
|
displayedContent: this.displayedContent,
|
|
progress: this.currentMessageContent.length > 0
|
|
? this.displayedContent.length / this.currentMessageContent.length
|
|
: 0
|
|
};
|
|
}
|
|
|
|
/**
|
|
* 立即完成打字(跳过动画)
|
|
*/
|
|
completeImmediately() {
|
|
this.stopTypewriter();
|
|
this.displayedContent = this.currentMessageContent;
|
|
|
|
if (this.onContentUpdate) {
|
|
this.onContentUpdate(this.currentMessageContent);
|
|
}
|
|
|
|
if (this.onTypingComplete) {
|
|
this.onTypingComplete(this.currentMessageContent);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 销毁打字机管理器
|
|
*/
|
|
destroy() {
|
|
this.stopTypewriter();
|
|
this.reset();
|
|
this.onCharacterTyped = null;
|
|
this.onTypingComplete = null;
|
|
this.onContentUpdate = null;
|
|
}
|
|
}
|
|
|
|
export default TypewriterManager; |