550 lines
11 KiB
JavaScript
550 lines
11 KiB
JavaScript
// 🎨 媒体预览组件逻辑
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const mediaManager = require('../../subpackages/media/utils/media-manager.js');
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Component({
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properties: {
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// 是否显示预览
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visible: {
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type: Boolean,
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value: false
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},
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// 媒体列表
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mediaList: {
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type: Array,
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value: []
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},
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// 当前索引
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currentIndex: {
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type: Number,
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value: 0
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},
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// 是否可以分享
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canShare: {
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type: Boolean,
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value: true
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},
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// 是否可以编辑
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canEdit: {
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type: Boolean,
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value: false
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},
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// 是否可以删除
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canDelete: {
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type: Boolean,
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value: false
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},
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// 是否显示底部操作栏
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showFooter: {
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type: Boolean,
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value: true
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},
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// 是否显示手势提示
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showGestureTips: {
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type: Boolean,
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value: true
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}
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},
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data: {
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// 当前媒体
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currentMedia: {},
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// 音频播放状态
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audioPlaying: false,
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audioProgress: 0,
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audioCurrentTime: 0,
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// 手势提示定时器
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gestureTimer: null
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},
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observers: {
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'mediaList, currentIndex': function(mediaList, currentIndex) {
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if (mediaList && mediaList.length > 0 && currentIndex >= 0 && currentIndex < mediaList.length) {
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this.setData({
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currentMedia: mediaList[currentIndex]
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});
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}
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}
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},
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lifetimes: {
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attached() {
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},
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detached() {
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this.cleanup();
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}
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},
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methods: {
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// 🎨 ===== 基础操作 =====
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// 阻止事件冒泡
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stopPropagation() {
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// 阻止点击事件冒泡到遮罩层
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},
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// 遮罩点击
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onMaskTap() {
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this.closePreview();
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},
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// 关闭预览
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closePreview() {
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this.setData({
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visible: false
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});
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this.triggerEvent('close');
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this.cleanup();
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},
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// 清理资源
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cleanup() {
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// 停止音频播放
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if (this.data.audioPlaying) {
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this.stopAudio();
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}
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// 清理定时器
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if (this.data.gestureTimer) {
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clearTimeout(this.data.gestureTimer);
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}
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},
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// 🎨 ===== 图片操作 =====
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// 轮播图切换
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onSwiperChange(e) {
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const currentIndex = e.detail.current;
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this.setData({
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currentIndex: currentIndex
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});
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this.triggerEvent('indexchange', {
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currentIndex: currentIndex
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});
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},
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// 图片加载完成
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onImageLoad(e) {
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const index = e.currentTarget.dataset.index;
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const mediaList = this.data.mediaList;
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if (mediaList[index]) {
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mediaList[index].loading = false;
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mediaList[index].error = false;
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this.setData({
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mediaList: mediaList
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});
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}
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},
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// 图片加载失败
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onImageError(e) {
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console.error('❌ 图片加载失败');
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const index = e.currentTarget.dataset.index;
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const mediaList = this.data.mediaList;
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if (mediaList[index]) {
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mediaList[index].loading = false;
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mediaList[index].error = true;
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this.setData({
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mediaList: mediaList
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});
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}
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},
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// 图片点击
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onImageTap(e) {
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// 可以实现双击放大等功能
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},
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// 重试加载
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retryLoad(e) {
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const index = e.currentTarget.dataset.index;
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const mediaList = this.data.mediaList;
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if (mediaList[index]) {
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mediaList[index].loading = true;
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mediaList[index].error = false;
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this.setData({
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mediaList: mediaList
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});
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}
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},
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// 🎨 ===== 视频操作 =====
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// 视频播放
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onVideoPlay() {
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this.triggerEvent('videoplay');
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},
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// 视频暂停
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onVideoPause() {
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this.triggerEvent('videopause');
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},
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// 视频结束
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onVideoEnded() {
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this.triggerEvent('videoended');
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},
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// 视频错误
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onVideoError(e) {
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console.error('❌ 视频播放错误:', e.detail);
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wx.showToast({
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title: '视频播放失败',
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icon: 'none'
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});
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},
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// 视频时间更新
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onVideoTimeUpdate(e) {
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// 可以用于显示播放进度
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},
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// 🎨 ===== 音频操作 =====
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// 切换音频播放
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toggleAudioPlay() {
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if (this.data.audioPlaying) {
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this.pauseAudio();
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} else {
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this.playAudio();
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}
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},
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// 播放音频
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playAudio() {
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// 这里需要实现音频播放逻辑
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this.setData({
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audioPlaying: true
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});
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// 模拟播放进度
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this.startAudioProgress();
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},
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// 暂停音频
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pauseAudio() {
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this.setData({
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audioPlaying: false
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});
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this.stopAudioProgress();
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},
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// 停止音频
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stopAudio() {
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this.setData({
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audioPlaying: false,
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audioProgress: 0,
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audioCurrentTime: 0
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});
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this.stopAudioProgress();
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},
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// 开始音频进度更新
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startAudioProgress() {
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this.audioProgressTimer = setInterval(() => {
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const currentTime = this.data.audioCurrentTime + 1;
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const duration = this.data.currentMedia.duration || 100;
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const progress = (currentTime / duration) * 100;
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this.setData({
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audioCurrentTime: currentTime,
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audioProgress: Math.min(progress, 100)
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});
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if (progress >= 100) {
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this.stopAudio();
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}
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}, 1000);
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},
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// 停止音频进度更新
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stopAudioProgress() {
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if (this.audioProgressTimer) {
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clearInterval(this.audioProgressTimer);
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this.audioProgressTimer = null;
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}
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},
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// 🎨 ===== 文件操作 =====
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// 打开文件
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openFile() {
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const currentMedia = this.data.currentMedia;
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wx.openDocument({
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filePath: currentMedia.tempFilePath || currentMedia.url,
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fileType: currentMedia.extension,
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success: () => {
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},
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fail: (error) => {
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console.error('❌ 文件打开失败:', error);
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wx.showToast({
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title: '无法打开此文件',
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icon: 'none'
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});
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}
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});
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},
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// 保存文件
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async saveFile() {
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const currentMedia = this.data.currentMedia;
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try {
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wx.showLoading({
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title: '保存中...'
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});
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// 如果是网络文件，先下载
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let filePath = currentMedia.tempFilePath;
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if (!filePath && currentMedia.url) {
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const downloadResult = await mediaManager.downloadFile(currentMedia.url);
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if (downloadResult.success) {
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filePath = downloadResult.tempFilePath;
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} else {
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throw new Error('下载失败');
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}
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}
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// 保存到本地
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const result = await new Promise((resolve, reject) => {
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wx.saveFile({
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tempFilePath: filePath,
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success: resolve,
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fail: reject
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});
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});
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wx.hideLoading();
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wx.showToast({
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title: '保存成功',
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icon: 'success'
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});
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} catch (error) {
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wx.hideLoading();
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console.error('❌ 文件保存失败:', error);
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wx.showToast({
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title: '保存失败',
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icon: 'none'
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});
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}
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},
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// 🎨 ===== 操作按钮 =====
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// 下载媒体
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async downloadMedia() {
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const currentMedia = this.data.currentMedia;
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if (!currentMedia.url) {
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wx.showToast({
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title: '无法下载',
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icon: 'none'
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});
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return;
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}
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try {
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wx.showLoading({
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title: '下载中...'
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});
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const result = await mediaManager.downloadFile(currentMedia.url, {
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fileName: currentMedia.name
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});
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wx.hideLoading();
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if (result.success) {
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wx.showToast({
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title: '下载完成',
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icon: 'success'
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});
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this.triggerEvent('download', {
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media: currentMedia,
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filePath: result.tempFilePath
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});
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} else {
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throw new Error(result.error);
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}
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} catch (error) {
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wx.hideLoading();
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console.error('❌ 下载失败:', error);
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wx.showToast({
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title: '下载失败',
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icon: 'none'
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});
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}
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},
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// 分享媒体
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shareMedia() {
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const currentMedia = this.data.currentMedia;
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this.triggerEvent('share', {
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media: currentMedia
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});
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},
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// 编辑媒体
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editMedia() {
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const currentMedia = this.data.currentMedia;
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this.triggerEvent('edit', {
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media: currentMedia,
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index: this.data.currentIndex
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});
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},
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// 删除媒体
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deleteMedia() {
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const currentMedia = this.data.currentMedia;
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wx.showModal({
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title: '删除确认',
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content: '确定要删除这个文件吗？',
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success: (res) => {
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if (res.confirm) {
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this.triggerEvent('delete', {
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media: currentMedia,
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index: this.data.currentIndex
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});
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}
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}
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});
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},
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// 收藏媒体
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favoriteMedia() {
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const currentMedia = this.data.currentMedia;
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const favorited = !currentMedia.favorited;
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// 更新收藏状态
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currentMedia.favorited = favorited;
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this.setData({
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currentMedia: currentMedia
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});
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this.triggerEvent('favorite', {
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media: currentMedia,
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favorited: favorited
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});
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wx.showToast({
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title: favorited ? '已收藏' : '已取消收藏',
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icon: 'success'
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});
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},
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// 显示更多操作
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showMoreActions() {
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const actions = ['转发', '设为壁纸', '添加到相册', '举报'];
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wx.showActionSheet({
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itemList: actions,
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success: (res) => {
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this.triggerEvent('moreaction', {
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action: actions[res.tapIndex],
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media: this.data.currentMedia
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});
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}
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});
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},
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// 🎨 ===== 工具方法 =====
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// 格式化文件大小
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formatFileSize(size) {
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if (!size) return '未知大小';
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const units = ['B', 'KB', 'MB', 'GB'];
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let unitIndex = 0;
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let fileSize = size;
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while (fileSize >= 1024 && unitIndex < units.length - 1) {
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fileSize /= 1024;
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unitIndex++;
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}
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return `${fileSize.toFixed(1)} ${units[unitIndex]}`;
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},
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// 格式化时长
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formatDuration(duration) {
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if (!duration) return '00:00';
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const minutes = Math.floor(duration / 60);
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const seconds = Math.floor(duration % 60);
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return `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
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},
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// 格式化时间
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formatTime(time) {
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if (!time) return '00:00';
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const minutes = Math.floor(time / 60);
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const seconds = Math.floor(time % 60);
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return `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
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},
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// 获取文件图标
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getFileIcon(extension) {
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const iconMap = {
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'pdf': '📄',
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'doc': '📝',
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'docx': '📝',
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'xls': '📊',
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'xlsx': '📊',
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'ppt': '📽️',
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'pptx': '📽️',
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'txt': '📃',
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'zip': '🗜️',
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'rar': '🗜️',
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'mp3': '🎵',
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'wav': '🎵',
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'mp4': '🎬',
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'avi': '🎬'
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};
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return iconMap[extension] || '📄';
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}
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}
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});
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