perf: 邮件附件预览

src/views/NewEmail.jsx

@@ -366,7 +366,7 @@ const NewEmail = ({ ...props }) => {
             resolve(e.target.result)
             return
           }
-          var win = window.open('', '_blank')
+          var win = window.open('', file.uid, 'width=1000,height=800,left=20,top=20')
           win.document.body.style.margin = '0'
           if (file.type.startsWith('image/')) {
             win.document.write("<img src='" + e.target.result + '\' style="max-width: 100%;" />')