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code/file-preview/custom-file/index.js

@@ -1,5 +1,5 @@
 (function ($) {
-  'use strict';
+  "use strict";
 
 
   // =====================
@@ -236,7 +236,7 @@
     // 生成唯一ID
     // =====================
     generateUniqueId: function () {
-      return 'file_' + Math.random().toString(36).slice(2) + Date.now();
+      return "file_" + Math.random().toString(36).slice(2) + Date.now();
     },
 
     // =====================
@@ -1146,10 +1146,10 @@
     // 判断是否为图片文件
     // =====================
     isImageFile: function (filename) {
-      if (!filename || typeof filename !== 'string') return false;
+      if (!filename || typeof filename !== "string") return false;
 
-      const ext = filename.slice(filename.lastIndexOf('.') + 1).toLowerCase();
-      const imageExts = new Set(['jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp']);
+      const ext = filename.slice(filename.lastIndexOf(".") + 1).toLowerCase();
+      const imageExts = new Set(["jpg", "jpeg", "png", "gif", "bmp", "webp"]);
 
       return imageExts.has(ext);
     },
@@ -1159,38 +1159,50 @@
     // =====================
     formatFileSize: function (bytes) {
       if (bytes === null || bytes === undefined || isNaN(bytes) || bytes <= 0) {
-        return '-';
+        return "-";
       }
 
       var k = 1024;
-      var sizes = ['B', 'KB', 'MB', 'GB', 'TB'];
+      var sizes = ["B", "KB", "MB", "GB", "TB"];
 
       var i = Math.floor(Math.log(bytes) / Math.log(k));
       i = Math.max(0, Math.min(i, sizes.length - 1));
 
-      return (bytes / Math.pow(k, i)).toFixed(2) + ' ' + sizes[i];
+      return (bytes / Math.pow(k, i)).toFixed(2) + " " + sizes[i];
     },
 
     // =====================
     // 格式化日期
     // =====================
     formatDate: function (dateStr) {
-      if (!dateStr) return '-';
+      if (!dateStr) return "-";
 
       var date = new Date(dateStr);
 
       if (isNaN(date.getTime())) {
-        return '-';
+        return "-";
       }
 
       var year = date.getFullYear();
-      var month = ('0' + (date.getMonth() + 1)).slice(-2);
-      var day = ('0' + date.getDate()).slice(-2);
-      var hours = ('0' + date.getHours()).slice(-2);
-      var minutes = ('0' + date.getMinutes()).slice(-2);
-      var seconds = ('0' + date.getSeconds()).slice(-2);
+      var month = ("0" + (date.getMonth() + 1)).slice(-2);
+      var day = ("0" + date.getDate()).slice(-2);
+      var hours = ("0" + date.getHours()).slice(-2);
+      var minutes = ("0" + date.getMinutes()).slice(-2);
+      var seconds = ("0" + date.getSeconds()).slice(-2);
 
-      return year + '-' + month + '-' + day + ' ' + hours + ':' + minutes + ':' + seconds;
+      return (
+        year +
+        "-" +
+        month +
+        "-" +
+        day +
+        " " +
+        hours +
+        ":" +
+        minutes +
+        ":" +
+        seconds
+      );
     },
 
     // =====================
@@ -1201,7 +1213,7 @@
       const downloadDisabled = !this.hasPermission(file, 'download');
       const deleteDisabled = !this.hasPermission(file, 'delete');
 
-      let content = '';
+      let content = "";
 
       if (this.isImageFile(file.name)) {
         content = `
@@ -1228,6 +1240,12 @@
         </div>
       `;
 
+      // 预览状态（使用class标识）
+      const isPreview = this.previewFiles.has(file._id);
+
+      // 选中状态
+      const isSelected = this.selectedFiles.has(file._id);
+
       return `
         <div class="g3-file-item" data-id="${file.id}">
           <input type="checkbox" class="g3-file-checkbox" />
@@ -1492,10 +1510,11 @@
   $.fn.G3File = function (options) {
     var args = Array.prototype.slice.call(arguments, 1);
     var instance;
+    var methodResult; // 存储方法调用结果
 
     this.each(function () {
       var $this = $(this);
-      instance = $this.data('G3File');
+      instance = $this.data("G3File");
 
       if (!instance) {
         instance = new G3File(this, options);
@@ -1503,12 +1522,12 @@
       } else if (typeof options === 'string') {
         var method = options;
         if (instance[method]) {
-          instance[method].apply(instance, args);
+          // 保存方法调用结果
+          methodResult = instance[method].apply(instance, args);
         }
       }
     });
 
     return instance || this;
   };
-
-})(jQuery);
+})(jQuery);

code/file-preview/test.html

@@ -202,4 +202,4 @@
 
 </body>
 
-</html>
+</html>