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-import { Component, Input, Output, EventEmitter, AfterViewInit, OnDestroy, Renderer2, Inject, ElementRef } from '@angular/core';
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-import { CommonModule } from '@angular/common';
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-import { MatButtonModule } from '@angular/material/button';
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-import { MatIconModule } from '@angular/material/icon';
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-import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
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-
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-@Component({
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- selector: 'app-sticky-header',
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- standalone: true,
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- imports: [CommonModule, MatButtonModule, MatIconModule, MatProgressSpinnerModule],
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- templateUrl: './sticky-header.component.html',
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- styleUrl: './sticky-header.component.scss'
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-})
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-export class StickyHeaderComponent implements AfterViewInit, OnDestroy {
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- constructor(
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- private renderer: Renderer2,
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- private elementRef: ElementRef
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- ) {}
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-
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- // 滚动优化相关属性
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- private scrollRafId: number | null = null;
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- private lastScrollTop = 0;
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- private lastIsLocked = false;
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- private lastIsCompact = false;
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-
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- /** 标题文本 */
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- @Input() title = '';
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-
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- /** 按钮文本 */
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- @Input() buttonText = '操作';
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-
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- /** 按钮图标 */
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- @Input() buttonIcon = 'add';
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-
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- /** 按钮颜色，默认primary */
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- @Input() buttonColor: 'primary' | 'accent' | 'warn' = 'primary';
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-
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- /** 是否禁用按钮 */
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- @Input() disabled = false;
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-
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- /** 是否显示加载状态 */
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- @Input() loading = false;
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-
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- /** 滚动阈值（像素），默认为5 */
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- @Input() scrollThreshold = 5;
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-
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- /** 是否启用自动滚动检测 */
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- @Input() autoDetect = false;
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-
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- /** 滚动容器选择器，默认为'.content-area'，设为'window'监听窗口滚动 */
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- @Input() scrollContainer = '.content-area';
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-
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- /** 紧凑模式阈值（像素），默认为50 */
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- @Input() compactThreshold = 50;
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-
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- /** 是否显示调试信息框 */
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- @Input() showDebugInfo = false;
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-
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- /** 调试信息数据源 */
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- @Input() debugDataSource = '';
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-
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- /** 调试信息记录数 */
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- @Input() debugRecordCount = 0;
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-
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- /** 调试信息更新时间 */
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- @Input() debugLastUpdated = '';
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-
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- /** 调试信息是否使用模拟数据 */
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- @Input() debugUseMockData = false;
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-
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- /** 调试信息注册API URL */
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- @Input() debugRegisterUrl = '';
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-
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- /** 调试信息列表API URL */
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- @Input() debugListUrl = '';
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-
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- /** 提示文本，显示在标题下方 */
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- @Input() hintText = '';
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-
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- /** 是否已滚动（由父组件控制，向后兼容） */
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- @Input() isScrolled = false;
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-
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- /** 是否锁定在顶部（到达滚动容器顶部） */
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- @Input() isLocked = false;
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-
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- /** 是否缩小状态（锁定后进一步缩小） */
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- @Input() isCompact = false;
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-
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- /** 锁定时的宽度（像素或百分比） */
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- @Input() headerWidth: string | number | null = null;
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-
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- /** 锁定时的左侧偏移（像素） */
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- @Input() headerLeft: string | number | null = null;
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-
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- /** 宽度参考目标选择器（用于锁定状态宽度匹配），如未设置则使用滚动容器 */
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- @Input() widthTarget: string | null = null;
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-
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- /** 标题区域最小高度（用于测试或固定高度布局），如 '200px', '10rem'，未设置则由内容决定 */
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- @Input() headerHeight: string | null = null;
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-
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- /** 按钮点击事件 */
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- @Output() buttonClick = new EventEmitter<void>();
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-
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- // 自动滚动检测的私有属性
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- private scrollListener: (() => void) | null = null;
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- private canScroll = false;
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- private isAutoDetecting = false;
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-
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- onButtonClick() {
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- if (!this.disabled && !this.loading) {
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- this.buttonClick.emit();
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- }
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- }
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-
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- ngAfterViewInit() {
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- if (this.autoDetect) {
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- this.setupAutoScrollDetection();
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- }
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- }
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-
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- ngOnDestroy() {
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- this.cleanupScrollListener();
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- if (this.scrollRafId) {
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- cancelAnimationFrame(this.scrollRafId);
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- this.scrollRafId = null;
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- }
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- }
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-
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- private setupAutoScrollDetection() {
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- if (this.isAutoDetecting) return;
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-
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- this.isAutoDetecting = true;
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- const container = this.getScrollContainer();
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- const isWindowScroll = this.scrollContainer === 'window';
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-
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- if (isWindowScroll) {
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- // 窗口滚动
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- this.canScroll = this.checkWindowScrollable();
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- const scrollHeight = document.body.scrollHeight || document.documentElement.scrollHeight || 0;
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- const clientHeight = window.innerHeight || document.documentElement.clientHeight || 0;
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-
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- console.log(`sticky-header: 窗口滚动性检查 - scrollHeight: ${scrollHeight}, clientHeight: ${clientHeight}, canScroll: ${this.canScroll}`);
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-
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- if (this.canScroll) {
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- this.scrollListener = this.renderer.listen(
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- 'window',
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- 'scroll',
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- this.handleWindowScroll.bind(this)
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- );
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- console.log('sticky-header: 自动滚动检测已启用，窗口滚动');
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-
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- // 初始检查窗口滚动位置
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- this.checkInitialWindowScrollPosition();
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- } else {
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- console.log('sticky-header: 窗口内容不足，禁用自动检测，设置isLocked=false, isCompact=false');
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- this.isLocked = false;
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- this.isCompact = false;
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- this.isScrolled = false;
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- }
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- } else if (container) {
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- // 容器滚动
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- this.canScroll = this.checkScrollable(container);
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- const scrollHeight = container.scrollHeight || 0;
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- const clientHeight = container.clientHeight || 0;
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-
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- console.log(`sticky-header: 容器滚动性检查 - scrollHeight: ${scrollHeight}, clientHeight: ${clientHeight}, canScroll: ${this.canScroll}, selector: ${this.scrollContainer}`);
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-
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- if (this.canScroll) {
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- this.scrollListener = this.renderer.listen(
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- container,
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- 'scroll',
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- this.handleScroll.bind(this)
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- );
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- console.log('sticky-header: 自动滚动检测已启用，容器:', this.scrollContainer);
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-
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- // 初始检查滚动位置
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- this.checkInitialScrollPosition(container);
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- } else {
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- console.log('sticky-header: 滚动容器内容不足，禁用自动检测，设置isLocked=false, isCompact=false');
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- // 确保状态为false
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- this.isLocked = false;
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- this.isCompact = false;
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- this.isScrolled = false;
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- }
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- } else {
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- console.warn('sticky-header: 未找到滚动容器:', this.scrollContainer);
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- }
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- }
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-
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- private getScrollContainer(): HTMLElement | null {
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- if (this.scrollContainer === 'window') {
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- return null; // 表示窗口滚动
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- }
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-
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- // 从当前元素向上查找最近的匹配容器
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- const container = this.elementRef.nativeElement.closest(this.scrollContainer);
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- if (container) {
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- return container;
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- }
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-
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- // 全局查找
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- return document.querySelector(this.scrollContainer) as HTMLElement;
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- }
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-
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- private checkScrollable(container: HTMLElement): boolean {
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- if (!container) return false;
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-
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- const scrollHeight = container.scrollHeight || 0;
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- const clientHeight = container.clientHeight || 0;
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-
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- // 如果内容高度大于可视区域高度，说明可以滚动
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- // 添加5px容差，避免因计算误差导致的误判
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- const canScroll = scrollHeight > clientHeight + 5;
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- return canScroll;
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- }
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-
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- private checkWindowScrollable(): boolean {
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- const scrollHeight = document.body.scrollHeight || document.documentElement.scrollHeight || 0;
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- const clientHeight = window.innerHeight || document.documentElement.clientHeight || 0;
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-
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- const canScroll = scrollHeight > clientHeight + 5;
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- return canScroll;
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- }
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-
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- private findContentContainer(): HTMLElement | null {
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- // 尝试查找内容区域容器，优先级：
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- // 1. .content-area 类 (我们在app.component.html中添加的)
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- // 2. 包含router-outlet的容器
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- // 3. 右侧内容区域
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- const selectors = [
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- '.content-area',
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- '.flex-1.overflow-auto',
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- 'div[class*="content"]',
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- 'div[class*="main"]',
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- 'div[class*="container"]'
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- ];
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-
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- for (const selector of selectors) {
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- const container = document.querySelector(selector) as HTMLElement;
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- if (container) {
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- console.log(`sticky-header: 找到内容容器: ${selector}, 位置: ${container.getBoundingClientRect().left}px, 宽度: ${container.getBoundingClientRect().width}px`);
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- return container;
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- }
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- }
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-
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- console.warn('sticky-header: 未找到内容容器');
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- return null;
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- }
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-
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- private getWidthTargetElement(): HTMLElement | null {
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- // 如果设置了widthTarget，优先使用它
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- if (this.widthTarget) {
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- const target = document.querySelector(this.widthTarget) as HTMLElement;
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- if (target) {
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- console.log(`sticky-header: 找到宽度目标元素: ${this.widthTarget}, 宽度: ${target.getBoundingClientRect().width}px`);
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- return target;
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- }
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- console.warn(`sticky-header: 未找到宽度目标元素: ${this.widthTarget}`);
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- }
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-
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- // 否则根据滚动容器类型返回相应元素
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- if (this.scrollContainer === 'window') {
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- return this.findContentContainer();
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- } else {
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- const container = this.getScrollContainer();
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- return container;
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- }
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- }
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-
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- private getSidebarWidth(): number {
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- // 从localStorage读取侧边栏宽度，默认320px
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- try {
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- const savedWidth = localStorage.getItem('sidebarWidth');
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- if (savedWidth) {
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- const width = parseInt(savedWidth, 10);
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- if (!isNaN(width) && width >= 200 && width <= 600) {
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- return width;
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- }
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- }
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- } catch (e) {
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- console.warn('sticky-header: 读取侧边栏宽度失败', e);
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- }
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- return 320; // 默认宽度
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- }
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-
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- private handleWindowScroll() {
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- // 如果窗口不可滚动，不处理滚动事件
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- if (!this.canScroll) {
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- console.log('sticky-header: 窗口不可滚动，跳过处理');
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- return;
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- }
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-
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- // 使用requestAnimationFrame防抖，避免频繁更新
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- if (this.scrollRafId) {
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- cancelAnimationFrame(this.scrollRafId);
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- }
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-
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- this.scrollRafId = requestAnimationFrame(() => {
|
|
299
|
|
- this.scrollRafId = null;
|
|
300
|
|
-
|
|
301
|
|
- const scrollTop = window.scrollY || document.documentElement.scrollTop || 0;
|
|
302
|
|
-
|
|
303
|
|
- // 检查滚动位置是否显著变化，避免微小滚动触发状态更新
|
|
304
|
|
- const scrollDelta = Math.abs(scrollTop - this.lastScrollTop);
|
|
305
|
|
- if (scrollDelta < 1) { // 小于1像素的变化忽略
|
|
306
|
|
- return;
|
|
307
|
|
- }
|
|
308
|
|
-
|
|
309
|
|
- this.lastScrollTop = scrollTop;
|
|
310
|
|
-
|
|
311
|
|
- // 计算新状态
|
|
312
|
|
- const newIsScrolled = scrollTop > this.scrollThreshold;
|
|
313
|
|
- const newIsLocked = scrollTop > this.scrollThreshold;
|
|
314
|
|
- const newIsCompact = scrollTop > this.compactThreshold;
|
|
315
|
|
-
|
|
316
|
|
- // 检查状态是否真正变化，避免不必要更新
|
|
317
|
|
- const stateChanged =
|
|
318
|
|
- newIsLocked !== this.lastIsLocked ||
|
|
319
|
|
- newIsCompact !== this.lastIsCompact ||
|
|
320
|
|
- newIsScrolled !== this.isScrolled;
|
|
321
|
|
-
|
|
322
|
|
- if (!stateChanged) {
|
|
323
|
|
- console.log(`sticky-header: 滚动位置变化但状态未变，scrollTop=${scrollTop}, isLocked=${newIsLocked}, isCompact=${newIsCompact}`);
|
|
324
|
|
- return;
|
|
325
|
|
- }
|
|
326
|
|
-
|
|
327
|
|
- this.lastIsLocked = newIsLocked;
|
|
328
|
|
- this.lastIsCompact = newIsCompact;
|
|
329
|
|
-
|
|
330
|
|
- // 更新滚动状态
|
|
331
|
|
- this.isScrolled = newIsScrolled;
|
|
332
|
|
- this.isLocked = newIsLocked;
|
|
333
|
|
- this.isCompact = newIsCompact;
|
|
334
|
|
-
|
|
335
|
|
- console.log(`sticky-header: 滚动状态更新，scrollTop=${scrollTop}, isLocked=${this.isLocked}, isCompact=${this.isCompact}`);
|
|
336
|
|
-
|
|
337
|
|
- // 设置宽度匹配容器
|
|
338
|
|
- if (this.isLocked) {
|
|
339
|
|
- // 使用宽度目标元素计算宽度
|
|
340
|
|
- const widthTargetElement = this.getWidthTargetElement();
|
|
341
|
|
- if (widthTargetElement) {
|
|
342
|
|
- const rect = widthTargetElement.getBoundingClientRect();
|
|
343
|
|
- this.headerWidth = rect.width;
|
|
344
|
|
- this.headerLeft = rect.left;
|
|
345
|
|
- console.log(`sticky-header: 窗口滚动锁定，目标宽度: ${rect.width}px, 左侧位置: ${rect.left}px, 目标元素: ${this.widthTarget || '默认'}`);
|
|
346
|
|
- } else {
|
|
347
|
|
- // 回退：使用视口宽度减去实际侧边栏宽度
|
|
348
|
|
- const sidebarWidth = this.getSidebarWidth();
|
|
349
|
|
- this.headerWidth = `calc(100% - ${sidebarWidth}px)`;
|
|
350
|
|
- this.headerLeft = sidebarWidth;
|
|
351
|
|
- console.log(`sticky-header: 未找到宽度目标元素，使用回退宽度: ${this.headerWidth}, 侧边栏宽度: ${sidebarWidth}px`);
|
|
352
|
|
- }
|
|
353
|
|
- } else {
|
|
354
|
|
- this.headerWidth = null;
|
|
355
|
|
- this.headerLeft = null;
|
|
356
|
|
- }
|
|
357
|
|
- });
|
|
358
|
|
- }
|
|
359
|
|
-
|
|
360
|
|
- private checkInitialWindowScrollPosition() {
|
|
361
|
|
- const scrollTop = window.scrollY || document.documentElement.scrollTop || 0;
|
|
362
|
|
- this.lastScrollTop = scrollTop;
|
|
363
|
|
-
|
|
364
|
|
- this.isScrolled = scrollTop > this.scrollThreshold;
|
|
365
|
|
- this.isLocked = scrollTop > this.scrollThreshold;
|
|
366
|
|
- this.isCompact = scrollTop > this.compactThreshold;
|
|
367
|
|
-
|
|
368
|
|
- // 记录初始状态
|
|
369
|
|
- this.lastIsLocked = this.isLocked;
|
|
370
|
|
- this.lastIsCompact = this.isCompact;
|
|
371
|
|
-
|
|
372
|
|
- if (this.isLocked) {
|
|
373
|
|
- // 使用宽度目标元素计算宽度
|
|
374
|
|
- const widthTargetElement = this.getWidthTargetElement();
|
|
375
|
|
- if (widthTargetElement) {
|
|
376
|
|
- const rect = widthTargetElement.getBoundingClientRect();
|
|
377
|
|
- this.headerWidth = rect.width;
|
|
378
|
|
- this.headerLeft = rect.left;
|
|
379
|
|
- console.log(`sticky-header: 初始窗口滚动位置检查: scrollTop=${scrollTop}, isLocked=${this.isLocked}, isCompact=${this.isCompact}, 目标宽度: ${rect.width}px, 目标元素: ${this.widthTarget || '默认'}`);
|
|
380
|
|
- } else {
|
|
381
|
|
- // 回退：使用视口宽度减去实际侧边栏宽度
|
|
382
|
|
- const sidebarWidth = this.getSidebarWidth();
|
|
383
|
|
- this.headerWidth = `calc(100% - ${sidebarWidth}px)`;
|
|
384
|
|
- this.headerLeft = sidebarWidth;
|
|
385
|
|
- console.log(`sticky-header: 初始窗口滚动位置检查: scrollTop=${scrollTop}, isLocked=${this.isLocked}, isCompact=${this.isCompact}, 使用回退宽度`);
|
|
386
|
|
- }
|
|
387
|
|
- } else {
|
|
388
|
|
- this.headerWidth = null;
|
|
389
|
|
- this.headerLeft = null;
|
|
390
|
|
- }
|
|
391
|
|
-
|
|
392
|
|
- console.log(`sticky-header: 初始窗口滚动位置检查完成: scrollTop=${scrollTop}, isLocked=${this.isLocked}, isCompact=${this.isCompact}, canScroll=${this.canScroll}`);
|
|
393
|
|
- }
|
|
394
|
|
-
|
|
395
|
|
- private handleScroll(event: Event) {
|
|
396
|
|
- // 如果容器不可滚动，不处理滚动事件
|
|
397
|
|
- if (!this.canScroll) {
|
|
398
|
|
- console.log('sticky-header: 容器不可滚动，跳过处理');
|
|
399
|
|
- return;
|
|
400
|
|
- }
|
|
401
|
|
-
|
|
402
|
|
- // 使用requestAnimationFrame防抖，避免频繁更新
|
|
403
|
|
- if (this.scrollRafId) {
|
|
404
|
|
- cancelAnimationFrame(this.scrollRafId);
|
|
405
|
|
- }
|
|
406
|
|
-
|
|
407
|
|
- this.scrollRafId = requestAnimationFrame(() => {
|
|
408
|
|
- this.scrollRafId = null;
|
|
409
|
|
-
|
|
410
|
|
- const container = event.target as HTMLElement;
|
|
411
|
|
- const scrollTop = container.scrollTop || 0;
|
|
412
|
|
-
|
|
413
|
|
- // 检查滚动位置是否显著变化，避免微小滚动触发状态更新
|
|
414
|
|
- const scrollDelta = Math.abs(scrollTop - this.lastScrollTop);
|
|
415
|
|
- if (scrollDelta < 1) { // 小于1像素的变化忽略
|
|
416
|
|
- return;
|
|
417
|
|
- }
|
|
418
|
|
-
|
|
419
|
|
- this.lastScrollTop = scrollTop;
|
|
420
|
|
-
|
|
421
|
|
- // 计算新状态
|
|
422
|
|
- const newIsScrolled = scrollTop > this.scrollThreshold;
|
|
423
|
|
- const newIsLocked = scrollTop > this.scrollThreshold;
|
|
424
|
|
- const newIsCompact = scrollTop > this.compactThreshold;
|
|
425
|
|
-
|
|
426
|
|
- // 检查状态是否真正变化，避免不必要更新
|
|
427
|
|
- const stateChanged =
|
|
428
|
|
- newIsLocked !== this.lastIsLocked ||
|
|
429
|
|
- newIsCompact !== this.lastIsCompact ||
|
|
430
|
|
- newIsScrolled !== this.isScrolled;
|
|
431
|
|
-
|
|
432
|
|
- if (!stateChanged) {
|
|
433
|
|
- console.log(`sticky-header: 容器滚动位置变化但状态未变，scrollTop=${scrollTop}, isLocked=${newIsLocked}, isCompact=${newIsCompact}`);
|
|
434
|
|
- return;
|
|
435
|
|
- }
|
|
436
|
|
-
|
|
437
|
|
- this.lastIsLocked = newIsLocked;
|
|
438
|
|
- this.lastIsCompact = newIsCompact;
|
|
439
|
|
-
|
|
440
|
|
- // 更新滚动状态
|
|
441
|
|
- this.isScrolled = newIsScrolled;
|
|
442
|
|
- this.isLocked = newIsLocked;
|
|
443
|
|
- this.isCompact = newIsCompact;
|
|
444
|
|
-
|
|
445
|
|
- console.log(`sticky-header: 容器滚动状态更新，scrollTop=${scrollTop}, isLocked=${this.isLocked}, isCompact=${this.isCompact}`);
|
|
446
|
|
-
|
|
447
|
|
- // 设置宽度匹配容器
|
|
448
|
|
- if (this.isLocked) {
|
|
449
|
|
- // 优先使用宽度目标元素，否则使用滚动容器
|
|
450
|
|
- const widthTargetElement = this.getWidthTargetElement();
|
|
451
|
|
- const targetElement = widthTargetElement || container;
|
|
452
|
|
- const rect = targetElement.getBoundingClientRect();
|
|
453
|
|
- this.headerWidth = rect.width;
|
|
454
|
|
- this.headerLeft = rect.left;
|
|
455
|
|
- console.log(`sticky-header: 容器滚动锁定，目标宽度: ${rect.width}px, 左侧位置: ${rect.left}px, 目标元素: ${widthTargetElement ? (this.widthTarget || '默认') : '滚动容器'}`);
|
|
456
|
|
- } else {
|
|
457
|
|
- this.headerWidth = null;
|
|
458
|
|
- this.headerLeft = null;
|
|
459
|
|
- }
|
|
460
|
|
- });
|
|
461
|
|
- }
|
|
462
|
|
-
|
|
463
|
|
- private checkInitialScrollPosition(container: HTMLElement) {
|
|
464
|
|
- const scrollTop = container.scrollTop || 0;
|
|
465
|
|
- this.lastScrollTop = scrollTop;
|
|
466
|
|
-
|
|
467
|
|
- this.isScrolled = scrollTop > this.scrollThreshold;
|
|
468
|
|
- this.isLocked = scrollTop > this.scrollThreshold;
|
|
469
|
|
- this.isCompact = scrollTop > this.compactThreshold;
|
|
470
|
|
-
|
|
471
|
|
- // 记录初始状态
|
|
472
|
|
- this.lastIsLocked = this.isLocked;
|
|
473
|
|
- this.lastIsCompact = this.isCompact;
|
|
474
|
|
-
|
|
475
|
|
- if (this.isLocked) {
|
|
476
|
|
- // 优先使用宽度目标元素，否则使用滚动容器
|
|
477
|
|
- const widthTargetElement = this.getWidthTargetElement();
|
|
478
|
|
- const targetElement = widthTargetElement || container;
|
|
479
|
|
- const rect = targetElement.getBoundingClientRect();
|
|
480
|
|
- this.headerWidth = rect.width;
|
|
481
|
|
- this.headerLeft = rect.left;
|
|
482
|
|
- console.log(`sticky-header: 初始容器滚动位置检查: scrollTop=${scrollTop}, isLocked=${this.isLocked}, isCompact=${this.isCompact}, 目标宽度: ${rect.width}px, 目标元素: ${widthTargetElement ? (this.widthTarget || '默认') : '滚动容器'}`);
|
|
483
|
|
- } else {
|
|
484
|
|
- this.headerWidth = null;
|
|
485
|
|
- this.headerLeft = null;
|
|
486
|
|
- }
|
|
487
|
|
-
|
|
488
|
|
- console.log(`sticky-header: 初始容器滚动位置检查完成: scrollTop=${scrollTop}, isLocked=${this.isLocked}, isCompact=${this.isCompact}, canScroll=${this.canScroll}`);
|
|
489
|
|
- }
|
|
490
|
|
-
|
|
491
|
|
- private cleanupScrollListener() {
|
|
492
|
|
- if (this.scrollListener) {
|
|
493
|
|
- this.scrollListener();
|
|
494
|
|
- this.scrollListener = null;
|
|
495
|
|
- console.log('sticky-header: 滚动监听器已清理');
|
|
496
|
|
- }
|
|
497
|
|
- this.isAutoDetecting = false;
|
|
498
|
|
- }
|
|
499
|
|
-}
|
