1.设置密码

2.复制文件
3.优化耗时操作进度条展示

app/src/main/java/com/all/pdfreader/pro/app/model/FileActionEvent.kt

@@ -1,7 +1,15 @@
 package com.all.pdfreader.pro.app.model
 
+import java.io.File
+
 sealed class FileActionEvent {
     data class Rename(val renameResult: RenameResult) : FileActionEvent()
     data class Delete(val deleteResult: DeleteResult) : FileActionEvent()
     data class Favorite(val isFavorite: Boolean) : FileActionEvent()
+    data class Duplicate(val file: File?) : FileActionEvent()
+
+    // 成功或失败结果，只在完成事件时有值
+    data class SetPassword(val status: Status, val success: Boolean? = null) : FileActionEvent() {
+        enum class Status { START, COMPLETE }
+    }
 }

app/src/main/java/com/all/pdfreader/pro/app/room/dao/PdfDocumentDao.kt

@@ -6,25 +6,26 @@ import kotlinx.coroutines.flow.Flow
 
 @Dao
 interface PdfDocumentDao {
-    
+
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     suspend fun insertOrUpdate(document: PdfDocumentEntity)
+
     //@Update 不会响应flow
     @Update
     suspend fun update(document: PdfDocumentEntity)
-    
+
     @Query("SELECT * FROM pdf_documents WHERE fileHash = :fileHash")
     suspend fun getByHash(fileHash: String): PdfDocumentEntity?
-    
+
     @Query("SELECT * FROM pdf_documents WHERE filePath = :filePath")
     suspend fun getByPath(filePath: String): PdfDocumentEntity?
-    
+
     @Query("SELECT * FROM pdf_documents WHERE isFavorite = 1 ORDER BY addedToFavoriteTime DESC")
     fun getFavoriteDocuments(): Flow<List<PdfDocumentEntity>>
-    
+
     @Query("SELECT * FROM pdf_documents WHERE fileName LIKE '%' || :query || '%' OR metadataTitle LIKE '%' || :query || '%'")
     fun searchDocuments(query: String): Flow<List<PdfDocumentEntity>>
-    
+
     @Query("SELECT * FROM pdf_documents ORDER BY lastOpenedTime DESC")
     fun getAllDocuments(): Flow<List<PdfDocumentEntity>>
 
@@ -33,7 +34,7 @@ interface PdfDocumentDao {
 
     @Delete
     suspend fun delete(document: PdfDocumentEntity)
-    
+
     @Query("DELETE FROM pdf_documents WHERE filePath = :filePath")
     suspend fun deleteByPath(filePath: String)
 
@@ -41,4 +42,6 @@ interface PdfDocumentDao {
     @Query("UPDATE pdf_documents SET filePath = :newFilePath, fileName = :newName WHERE filePath = :oldFilePath")
     suspend fun updateFilePathAndFileName(oldFilePath: String, newFilePath: String, newName: String)
 
+    @Query("UPDATE pdf_documents SET isPassword = :hasPassword WHERE filePath = :filePath")
+    suspend fun updateIsPassword(filePath: String, hasPassword: Boolean)
 }

app/src/main/java/com/all/pdfreader/pro/app/room/repository/PdfRepository.kt

@@ -43,6 +43,11 @@ class PdfRepository private constructor(context: Context) {
         pdfDao.updateFilePathAndFileName(oldFilePath, newFilePath, newName)
     }
 
+    //语句更新可响应flow
+    suspend fun updateIsPassword(filePath: String, hasPassword: Boolean){
+        pdfDao.updateIsPassword(filePath, hasPassword)
+    }
+
     suspend fun updateFavoriteStatus(filePath: String, isFavorite: Boolean) {
         val document = pdfDao.getByPath(filePath)?.copy(
             isFavorite = isFavorite,
@@ -60,6 +65,7 @@ class PdfRepository private constructor(context: Context) {
         document?.let { pdfDao.update(it) }
     }
 
+    //复制更新不会更新flow
     suspend fun updatePasswordStatus(filePath: String, isPassword: Boolean) {
         val document = pdfDao.getByPath(filePath)?.copy(
             isPassword = isPassword

app/src/main/java/com/all/pdfreader/pro/app/ui/act/MainActivity.kt

@@ -12,6 +12,7 @@ import com.all.pdfreader.pro.app.R
 import com.all.pdfreader.pro.app.databinding.ActivityMainBinding
 import com.all.pdfreader.pro.app.model.FileActionEvent
 import com.all.pdfreader.pro.app.ui.dialog.PermissionDialogFragment
+import com.all.pdfreader.pro.app.ui.dialog.ProgressDialogFragment
 import com.all.pdfreader.pro.app.ui.dialog.SortDialogFragment
 import com.all.pdfreader.pro.app.ui.fragment.FavoriteFrag
 import com.all.pdfreader.pro.app.ui.fragment.HomeFrag
@@ -43,6 +44,8 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
 
     private val viewModel by lazy { ViewModelProvider(this)[PdfViewModel::class.java] }
 
+    private var progressDialog: ProgressDialogFragment? = null
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding = ActivityMainBinding.inflate(layoutInflater)
@@ -93,6 +96,33 @@ class MainActivity : BaseActivity(), PermissionDialogFragment.PermissionCallback
                         showToast(getString(R.string.removed_from_favorites))
                     }
                 }
+
+                is FileActionEvent.Duplicate -> {
+                    if (event.file != null) {
+                        showToast(getString(R.string.duplicate_created_successfully))
+                    } else {
+                        showToast(getString(R.string.duplicate_created_failed))
+                    }
+                }
+
+                is FileActionEvent.SetPassword -> {
+                    when (event.status) {
+                        FileActionEvent.SetPassword.Status.START -> {
+                            progressDialog = ProgressDialogFragment()
+                            progressDialog?.show(supportFragmentManager, "progressDialog")
+                        }
+
+                        FileActionEvent.SetPassword.Status.COMPLETE -> {
+                            progressDialog?.dismiss()
+                            progressDialog = null
+                            if (event.success == true) {
+                                showToast(getString(R.string.set_password_successfully))
+                            } else {
+                                showToast(getString(R.string.set_password_failed))
+                            }
+                        }
+                    }
+                }
             }
         }
     }

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/ListMoreDialogFragment.kt

@@ -74,6 +74,7 @@ class ListMoreDialogFragment(val filePath: String) : BottomSheetDialogFragment()
                 .into(binding.tvFileImg)
         }
         updateCollectUi(isFavorite)
+        updatePasswordUi(pdfDocument.isPassword)
     }
 
     private fun setupOnClick() {
@@ -103,6 +104,18 @@ class ListMoreDialogFragment(val filePath: String) : BottomSheetDialogFragment()
             printPdfFile(requireActivity(), Uri.fromFile(File(pdfDocument.filePath)))
             dismiss()
         }
+        binding.duplicateFileBtn.setOnClickListener {
+            viewModel.duplicateFile(requireActivity(), pdfDocument.filePath)
+            dismiss()
+        }
+        binding.setPasswordBtn.setOnClickListener {
+            if (pdfDocument.isPassword) {
+
+            } else {
+                PdfSetPasswordDialog().show(parentFragmentManager, "PdfSetPasswordDialog")
+            }
+            dismiss()
+        }
     }
 
     private fun updateCollectUi(b: Boolean) {
@@ -113,6 +126,16 @@ class ListMoreDialogFragment(val filePath: String) : BottomSheetDialogFragment()
         }
     }
 
+    private fun updatePasswordUi(b: Boolean) {
+        if (b) {
+            binding.passwordIv.setImageResource(R.drawable.unlock)
+            binding.passwordTv.text = getString(R.string.remove_password)
+        } else {
+            binding.passwordIv.setImageResource(R.drawable.lock)
+            binding.passwordTv.text = getString(R.string.set_password)
+        }
+    }
+
     private fun showToast(message: String) {
         Toast.makeText(requireActivity(), message, Toast.LENGTH_SHORT).show()
     }

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/PdfSetPasswordDialog.kt

@@ -7,18 +7,23 @@ import android.text.TextWatcher
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Toast
 import androidx.core.graphics.drawable.toDrawable
 import androidx.fragment.app.DialogFragment
+import androidx.fragment.app.activityViewModels
 import com.all.pdfreader.pro.app.R
 import com.all.pdfreader.pro.app.databinding.DialogPdfSetPasswordBinding
+import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.util.AppUtils.showKeyboard
+import com.all.pdfreader.pro.app.viewmodel.PdfViewModel
+import kotlin.getValue
 
-class PdfSetPasswordDialog(
+class PdfSetPasswordDialog() : DialogFragment(
-    private val onCancelled: () -> Unit, private val onPasswordSet: (String) -> Unit
-) : DialogFragment(
 
 ) {
     private lateinit var binding: DialogPdfSetPasswordBinding
+    private val viewModel: PdfViewModel by activityViewModels()
+    private lateinit var pdfDocument: PdfDocumentEntity
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
@@ -42,14 +47,19 @@ class PdfSetPasswordDialog(
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        binding.etPassword.showKeyboard()
+        viewModel.pdfDocument.value?.let {
-        setupListeners()
+            pdfDocument = it
-        setupTextWatchers()
+            binding.etPassword.showKeyboard()
+            setupListeners()
+            setupTextWatchers()
+        } ?: run {
+            showToast(getString(R.string.file_not))
+            dismiss()
+        }
     }
 
     private fun setupListeners() {
         binding.tvCancel.setOnClickListener {
-            onCancelled()
             dismiss()
         }
 
@@ -57,7 +67,7 @@ class PdfSetPasswordDialog(
             val password = binding.etPassword.text.toString()
             val confirmPassword = binding.etConfirmPassword.text.toString()
             if (validatePassword(password, confirmPassword)) {
-                onPasswordSet(password)
+                viewModel.setPassword(pdfDocument.filePath, password)
                 dismiss()
             }
         }
@@ -118,4 +128,7 @@ class PdfSetPasswordDialog(
         return true
     }
 
+    private fun showToast(message: String) {
+        Toast.makeText(requireActivity(), message, Toast.LENGTH_SHORT).show()
+    }
 }

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/ProgressDialogFragment.kt

@@ -0,0 +1,40 @@
+package com.all.pdfreader.pro.app.ui.dialog
+
+import android.graphics.Color
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.graphics.drawable.toDrawable
+import androidx.fragment.app.DialogFragment
+import com.all.pdfreader.pro.app.R
+import com.all.pdfreader.pro.app.databinding.DialogProgressBinding
+
+class ProgressDialogFragment : DialogFragment() {
+
+    private lateinit var binding: DialogProgressBinding
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
+    ): View? {
+        binding = DialogProgressBinding.inflate(layoutInflater)
+        return binding.root
+    }
+
+    override fun onStart() {
+        super.onStart()
+        dialog?.window?.apply {
+            // 去掉系统默认的背景 padding
+            setBackgroundDrawable(Color.TRANSPARENT.toDrawable())
+            // 设置宽度为全屏减去 16dp
+            val margin = resources.getDimensionPixelSize(R.dimen.dialog_margin) // 16dp
+            val width = resources.displayMetrics.widthPixels - margin * 2
+            setLayout(width, ViewGroup.LayoutParams.WRAP_CONTENT)
+        }
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        isCancelable = false
+    }
+}

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/RenameDialogFragment.kt

@@ -128,7 +128,6 @@ class RenameDialogFragment() : DialogFragment() {
         return true
     }
 
-
     private fun showToast(message: String) {
         Toast.makeText(requireActivity(), message, Toast.LENGTH_SHORT).show()
     }

app/src/main/java/com/all/pdfreader/pro/app/util/AppUtils.kt

@@ -4,6 +4,7 @@ import android.app.Activity
 import android.content.Context
 import android.content.Intent
 import android.graphics.Bitmap
+import android.graphics.Color
 import android.graphics.pdf.PdfRenderer
 import android.net.Uri
 import android.os.Bundle
@@ -30,6 +31,7 @@ import java.io.FileOutputStream
 import androidx.core.graphics.createBitmap
 import androidx.print.PrintHelper
 import com.all.pdfreader.pro.app.ui.adapter.PrintPdfAdapter
+import com.shockwave.pdfium.PdfDocument
 import com.shockwave.pdfium.PdfPasswordException
 import com.shockwave.pdfium.PdfiumCore
 import com.tom_roush.pdfbox.pdmodel.common.PDPageLabelRange
@@ -167,4 +169,52 @@ object AppUtils {
             e3.printStackTrace()
         }
     }
+
+
+    fun generateFastThumbnail(
+        context: Context,
+        pdfFile: File,
+        maxWidth: Int = 200,
+        maxHeight: Int = 300
+    ): String? {
+        return try {
+            val pdfiumCore = PdfiumCore(context)
+            val fd = ParcelFileDescriptor.open(pdfFile, ParcelFileDescriptor.MODE_READ_ONLY)
+            val pdfDocument: PdfDocument = pdfiumCore.newDocument(fd)
+
+            // 打开第一页
+            pdfiumCore.openPage(pdfDocument, 0)
+
+            // 获取原始页宽高
+            val width = pdfiumCore.getPageWidthPoint(pdfDocument, 0)
+            val height = pdfiumCore.getPageHeightPoint(pdfDocument, 0)
+
+            // 计算缩略图尺寸
+            val scale = minOf(maxWidth.toFloat() / width, maxHeight.toFloat() / height)
+            val thumbWidth = (width * scale).toInt()
+            val thumbHeight = (height * scale).toInt()
+
+            val bitmap = createBitmap(thumbWidth, thumbHeight)
+            bitmap.eraseColor(Color.WHITE) // 白底
+
+            // 渲染第一页到 Bitmap
+            pdfiumCore.renderPageBitmap(pdfDocument, bitmap, 0, 0, 0, thumbWidth, thumbHeight)
+
+            // 保存到缓存
+            val cacheDir = File(context.cacheDir, "thumbnails")
+            if (!cacheDir.exists()) cacheDir.mkdirs()
+            val thumbFile = File(cacheDir, pdfFile.nameWithoutExtension + ".jpg")
+            FileOutputStream(thumbFile).use { out ->
+                bitmap.compress(Bitmap.CompressFormat.JPEG, 80, out)
+            }
+
+            pdfiumCore.closeDocument(pdfDocument)
+            fd.close()
+
+            thumbFile.absolutePath
+        } catch (e: Exception) {
+            e.printStackTrace()
+            null
+        }
+    }
 }

app/src/main/java/com/all/pdfreader/pro/app/util/FileUtils.kt

@@ -529,4 +529,29 @@ object FileUtils {
         }
     }
 
+    fun duplicateFile(originalFile: File): File? {
+        if (!originalFile.exists()) return null
+
+        val parentDir = originalFile.parentFile ?: return null
+        val fileName = originalFile.nameWithoutExtension
+        val extension = originalFile.extension
+
+        // 自动生成不重复的新文件名
+        var newFile = File(parentDir, "$fileName (copy).$extension")
+        var index = 1
+        while (newFile.exists()) {
+            newFile = File(parentDir, "$fileName ($index).$extension")
+            index++
+        }
+
+        // 执行复制
+        originalFile.inputStream().use { input ->
+            newFile.outputStream().use { output ->
+                input.copyTo(output)
+            }
+        }
+
+        return newFile
+    }
+
 }

app/src/main/java/com/all/pdfreader/pro/app/util/PdfScanner.kt

@@ -9,6 +9,7 @@ import androidx.core.graphics.createBitmap
 import com.all.pdfreader.pro.app.PRApp
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.room.repository.PdfRepository
+import com.all.pdfreader.pro.app.util.AppUtils.generateFastThumbnail
 import com.all.pdfreader.pro.app.util.FileUtils.isPdfEncrypted
 import com.shockwave.pdfium.PdfDocument
 import com.shockwave.pdfium.PdfiumCore
@@ -273,51 +274,4 @@ class PdfScanner(
         val lastScan = getLastScanTime()
         return TimeUnit.MILLISECONDS.toHours(System.currentTimeMillis() - lastScan)
     }
-
-    private fun generateFastThumbnail(
-        context: Context,
-        pdfFile: File,
-        maxWidth: Int = 200,
-        maxHeight: Int = 300
-    ): String? {
-        return try {
-            val pdfiumCore = PdfiumCore(context)
-            val fd = ParcelFileDescriptor.open(pdfFile, ParcelFileDescriptor.MODE_READ_ONLY)
-            val pdfDocument: PdfDocument = pdfiumCore.newDocument(fd)
-
-            // 打开第一页
-            pdfiumCore.openPage(pdfDocument, 0)
-
-            // 获取原始页宽高
-            val width = pdfiumCore.getPageWidthPoint(pdfDocument, 0)
-            val height = pdfiumCore.getPageHeightPoint(pdfDocument, 0)
-
-            // 计算缩略图尺寸
-            val scale = minOf(maxWidth.toFloat() / width, maxHeight.toFloat() / height)
-            val thumbWidth = (width * scale).toInt()
-            val thumbHeight = (height * scale).toInt()
-
-            val bitmap = createBitmap(thumbWidth, thumbHeight)
-            bitmap.eraseColor(Color.WHITE) // 白底
-
-            // 渲染第一页到 Bitmap
-            pdfiumCore.renderPageBitmap(pdfDocument, bitmap, 0, 0, 0, thumbWidth, thumbHeight)
-
-            // 保存到缓存
-            val cacheDir = File(context.cacheDir, "thumbnails")
-            if (!cacheDir.exists()) cacheDir.mkdirs()
-            val thumbFile = File(cacheDir, pdfFile.nameWithoutExtension + ".jpg")
-            FileOutputStream(thumbFile).use { out ->
-                bitmap.compress(Bitmap.CompressFormat.JPEG, 80, out)
-            }
-
-            pdfiumCore.closeDocument(pdfDocument)
-            fd.close()
-
-            thumbFile.absolutePath
-        } catch (e: Exception) {
-            e.printStackTrace()
-            null
-        }
-    }
 }

app/src/main/java/com/all/pdfreader/pro/app/util/PdfSecurityUtils.kt

@@ -0,0 +1,44 @@
+package com.all.pdfreader.pro.app.util
+
+import com.tom_roush.pdfbox.pdmodel.PDDocument
+import com.tom_roush.pdfbox.pdmodel.encryption.AccessPermission
+import com.tom_roush.pdfbox.pdmodel.encryption.StandardProtectionPolicy
+import java.io.File
+
+object PdfSecurityUtils {
+
+    fun setPasswordToPdf(
+        inputFilePath: String,
+        userPassword: String,
+        ownerPassword: String
+    ): Boolean {
+        return try {
+            PDDocument.load(File(inputFilePath)).use { document ->
+                val accessPermission = AccessPermission()
+                val protectionPolicy =
+                    StandardProtectionPolicy(ownerPassword, userPassword, accessPermission)
+                protectionPolicy.encryptionKeyLength = 256
+                protectionPolicy.permissions = accessPermission
+                document.protect(protectionPolicy)
+                document.save(inputFilePath)
+                true
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+            false
+        }
+    }
+
+    fun removePasswordFromPdf(inputFilePath: String, password: String): Boolean {
+        return try {
+            PDDocument.load(File(inputFilePath), password).use { document ->
+                document.isAllSecurityToBeRemoved = true // 移除所有安全设置，包括密码
+                document.save(inputFilePath)
+            }
+            true // 返回成功解密的标志
+        } catch (e: Exception) {
+            e.printStackTrace()
+            false // 返回解密失败的标志
+        }
+    }
+}

app/src/main/java/com/all/pdfreader/pro/app/viewmodel/PdfViewModel.kt

@@ -1,5 +1,6 @@
 package com.all.pdfreader.pro.app.viewmodel
 
+import android.content.Context
 import android.util.Log
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
@@ -8,9 +9,12 @@ import androidx.lifecycle.viewModelScope
 import com.all.pdfreader.pro.app.model.FileActionEvent
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.room.repository.PdfRepository
+import com.all.pdfreader.pro.app.util.AppUtils.generateFastThumbnail
 import com.all.pdfreader.pro.app.util.FileDeleteUtil
 import com.all.pdfreader.pro.app.util.FileUtils
-import com.all.pdfreader.pro.app.util.LogUtil
+import com.all.pdfreader.pro.app.util.FileUtils.isPdfEncrypted
+import com.all.pdfreader.pro.app.util.PdfMetadataExtractor
+import com.all.pdfreader.pro.app.util.PdfSecurityUtils
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -62,9 +66,7 @@ class PdfViewModel : ViewModel() {
                 pdfRepository.updateFilePathAndFileName(filePath, newFilePath, finalName)
             }
 
-            withContext(Dispatchers.Main) {
+            _fileActionEvent.postValue(FileActionEvent.Rename(renameResult))
-                _fileActionEvent.postValue(FileActionEvent.Rename(renameResult))
-            }
         }
     }
 
@@ -77,18 +79,76 @@ class PdfViewModel : ViewModel() {
                 Log.d("ocean", "文件已删除，清除数据库数据")
                 pdfRepository.deleteDocument(filePath)
             }
-            withContext(Dispatchers.Main) {
+            _fileActionEvent.postValue(FileActionEvent.Delete(deleteResult))
-                _fileActionEvent.postValue(FileActionEvent.Delete(deleteResult))
-            }
         }
     }
 
     fun saveCollectState(filePath: String, isFavorite: Boolean) {
         viewModelScope.launch {
             pdfRepository.updateFavoriteStatus(filePath, isFavorite)
-            withContext(Dispatchers.Main) {
+            _fileActionEvent.postValue(FileActionEvent.Favorite(isFavorite))
-                _fileActionEvent.postValue(FileActionEvent.Favorite(isFavorite))
+        }
+    }
+
+    fun duplicateFile(context: Context, filePath: String) {
+        viewModelScope.launch {
+            val file = FileUtils.duplicateFile(File(filePath))
+            Log.d("ocean", "duplicateFile->$file")
+            if (file != null) {
+                val isPassword = isPdfEncrypted(file)
+                val metadata = PdfMetadataExtractor.extractMetadata(file.absolutePath)
+                val document = PdfDocumentEntity(
+                    filePath = file.absolutePath,
+                    fileName = file.name,
+                    fileSize = file.length(),
+                    lastModified = file.lastModified(),
+                    pageCount = metadata?.pageCount ?: 0,
+                    thumbnailPath = null,
+                    metadataTitle = metadata?.title,
+                    metadataAuthor = metadata?.author,
+                    metadataSubject = metadata?.subject,
+                    metadataKeywords = metadata?.keywords,
+                    metadataCreationDate = metadata?.creationDate?.time,
+                    metadataModificationDate = metadata?.modificationDate?.time,
+                    isPassword = isPassword
+                )
+                pdfRepository.insertOrUpdateDocument(document)
+                Log.d("ocean", "✅ 已保存到数据库: ${file.name}")
+                if (!isPassword) {//没有密码的情况下才去获取缩略图
+                    launch(Dispatchers.IO) {
+                        val newThumbnail = generateFastThumbnail(context, file)
+                        if (newThumbnail != null && document.thumbnailPath != newThumbnail) {
+                            pdfRepository.updateThumbnailPath(
+                                document.filePath,
+                                newThumbnail
+                            )
+                            Log.d("ocean", "✅ 缩略图已更新")
+                        }
+                    }
+                }
             }
+            _fileActionEvent.postValue(FileActionEvent.Duplicate(file))
+        }
+    }
+
+    fun setPassword(filePath: String, password: String) {
+        viewModelScope.launch {
+            // 发送 START 事件，UI 显示进度框
+            _fileActionEvent.postValue(FileActionEvent.SetPassword(FileActionEvent.SetPassword.Status.START))
+
+            val success = withContext(Dispatchers.IO) {
+                PdfSecurityUtils.setPasswordToPdf(filePath, password, password).also {
+                    if (it) {
+                        pdfRepository.updateIsPassword(filePath, true)
+                    }
+                }
+            }
+            _fileActionEvent.postValue(
+                FileActionEvent.SetPassword(
+                    FileActionEvent.SetPassword.Status.COMPLETE,
+                    success
+                )
+            )
         }
     }
 }

app/src/main/res/drawable/indeterminate_progress_drawable.xml

@@ -0,0 +1,20 @@
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- 背景轨道 -->
+    <item android:id="@android:id/background">
+        <shape android:shape="rectangle">
+            <corners android:radius="6dp" />
+            <solid android:color="#E0E0E0"/> <!-- 背景色 -->
+        </shape>
+    </item>
+
+    <!-- 动画前景 -->
+    <item android:id="@android:id/progress">
+        <clip>
+            <shape android:shape="rectangle">
+                <corners android:radius="6dp"/>
+                <solid android:color="#3F51B5"/> <!-- 动画颜色 -->
+            </shape>
+        </clip>
+    </item>
+</layer-list>

app/src/main/res/layout/dialog_list_more.xml

@@ -230,6 +230,7 @@
         android:orientation="vertical">
 
         <LinearLayout
+            android:id="@+id/duplicateFileBtn"
             android:layout_width="match_parent"
             android:layout_height="48dp"
             android:gravity="center_vertical"
@@ -251,17 +252,20 @@
         </LinearLayout>
 
         <LinearLayout
+            android:id="@+id/setPasswordBtn"
             android:layout_width="match_parent"
             android:layout_height="48dp"
             android:gravity="center_vertical"
             android:orientation="horizontal">
 
             <ImageView
+                android:id="@+id/passwordIv"
                 android:layout_width="24dp"
                 android:layout_height="24dp"
                 android:src="@drawable/lock" />
 
             <TextView
+                android:id="@+id/passwordTv"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_marginStart="16dp"

app/src/main/res/layout/dialog_progress.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/dr_rounded_corner_12_bg_white"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/tvTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:fontFamily="@font/poppins_medium"
+        android:gravity="center"
+        android:text="@string/processing"
+        android:textColor="@color/black"
+        android:textSize="18sp" />
+
+    <ProgressBar
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_width="match_parent"
+        android:layout_height="24dp"
+        android:layout_marginTop="8dp"
+        android:indeterminate="true"/>
+
+</LinearLayout>

app/src/main/res/values/strings.xml

@@ -49,7 +49,11 @@
     <string name="delete_file">Delete File</string>
     <string name="delete">Delete</string>
     <string name="set_password">Set Password</string>
+    <string name="set_password_successfully">Set Password successfully</string>
+    <string name="set_password_failed">Set Password failed</string>
     <string name="remove_password">Remove Password</string>
+    <string name="remove_password_successfully">Remove Password successfully</string>
+    <string name="remove_password_failed">Remove Password failed</string>
     <string name="duplicate_file">Duplicate File</string>
     <string name="enter_name">Enter a name</string>
     <string name="name_not_empty">File name cannot be empty</string>
@@ -88,4 +92,7 @@
     <string name="pdf_cant_print_password_protected">Cannot print a password protected PDF file</string>
     <string name="cannot_print_malformed_pdf">Cannot print a malformed PDF file</string>
     <string name="pdf_cannot_print_error">Cannot print PDF file, Unknown error has occurred</string>
+    <string name="duplicate_created_successfully">Duplicate file created successfully</string>
+    <string name="duplicate_created_failed">Duplicate file created failed</string>
+    <string name="processing">Processing…</string>
 </resources>