Added plain text file viewer

app/src/main/java/org/linphone/notifications/NotificationsManager.kt

@@ -30,7 +30,6 @@ import android.content.Intent
 import android.content.pm.PackageManager
 import android.graphics.Bitmap
 import android.net.Uri
-import android.webkit.MimeTypeMap
 import androidx.annotation.AnyThread
 import androidx.annotation.MainThread
 import androidx.annotation.WorkerThread
@@ -749,7 +748,7 @@ class NotificationsManager @MainThread constructor(private val context: Context)
                     val filePath = contentUri.toString()
                     val extension = FileUtils.getExtensionFromFileName(filePath)
                     if (extension.isNotEmpty()) {
-                        val mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+                        val mime = FileUtils.getMimeTypeFromExtension(extension)
                         notifiableMessage.filePath = contentUri
                         notifiableMessage.fileMime = mime
                         Log.i("$TAG Added file $contentUri with MIME $mime to notification")

app/src/main/java/org/linphone/ui/main/chat/fragment/ConversationsListFragment.kt

@@ -28,7 +28,6 @@ import android.view.View
 import android.view.ViewGroup
 import android.view.animation.Animation
 import android.view.animation.AnimationUtils
-import android.webkit.MimeTypeMap
 import androidx.annotation.UiThread
 import androidx.core.view.doOnPreDraw
 import androidx.lifecycle.ViewModelProvider
@@ -244,9 +243,9 @@ class ConversationsListFragment : AbstractTopBarFragment() {
                 if (findNavController().currentDestination?.id == R.id.conversationsListFragment) {
                     Log.i("$TAG Navigating to file viewer fragment with path [$path]")
                     val extension = FileUtils.getExtensionFromFileName(path)
-                    val mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+                    val mime = FileUtils.getMimeTypeFromExtension(extension)
                     when (FileUtils.getMimeType(mime)) {
-                        FileUtils.MimeType.Image, FileUtils.MimeType.Video, FileUtils.MimeType.Pdf -> {
+                        FileUtils.MimeType.Image, FileUtils.MimeType.Video, FileUtils.MimeType.Pdf, FileUtils.MimeType.PlainText -> {
                             val action =
                                 FileViewerFragmentDirections.actionGlobalFileViewerFragment(path)
                             findNavController().navigate(action)

app/src/main/java/org/linphone/ui/main/chat/model/FileModel.kt

@@ -1,6 +1,5 @@
 package org.linphone.ui.main.chat.model
 
-import android.webkit.MimeTypeMap
 import androidx.annotation.AnyThread
 import androidx.annotation.UiThread
 import androidx.lifecycle.MutableLiveData
@@ -41,7 +40,7 @@ class FileModel @AnyThread constructor(
             val extension = FileUtils.getExtensionFromFileName(file)
             isPdf = extension == "pdf"
 
-            val mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+            val mime = FileUtils.getMimeTypeFromExtension(extension)
             mimeType = FileUtils.getMimeType(mime)
             isImage = mimeType == FileUtils.MimeType.Image
             isVideoPreview = mimeType == FileUtils.MimeType.Video

app/src/main/java/org/linphone/ui/main/viewer/fragment/FileViewerFragment.kt

@@ -60,6 +60,7 @@ class FileViewerFragment : GenericFragment() {
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        postponeEnterTransition()
         super.onViewCreated(view, savedInstanceState)
 
         viewModel = ViewModelProvider(this)[FileViewModel::class.java]
@@ -75,6 +76,21 @@ class FileViewerFragment : GenericFragment() {
             goBack()
         }
 
+        viewModel.fileReadyEvent.observe(viewLifecycleOwner) {
+            it.consume { done ->
+                if (done) {
+                    (view.parent as? ViewGroup)?.doOnPreDraw {
+                        startPostponedEnterTransition()
+                    }
+                } else {
+                    (view.parent as? ViewGroup)?.doOnPreDraw {
+                        Log.e("$TAG Failed to open file, going back")
+                        goBack()
+                    }
+                }
+            }
+        }
+
         binding.setShareClickListener {
             lifecycleScope.launch {
                 val filePath = FileUtils.getProperFilePath(path)

app/src/main/java/org/linphone/ui/main/viewer/viewmodel/FileViewModel.kt

@@ -8,14 +8,17 @@ import android.net.Uri
 import android.os.Environment
 import android.os.ParcelFileDescriptor
 import android.provider.MediaStore
-import android.webkit.MimeTypeMap
+import android.text.PrecomputedText
 import android.widget.ImageView
 import androidx.annotation.UiThread
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
+import java.io.BufferedReader
 import java.io.File
+import java.io.FileReader
 import java.lang.IllegalStateException
+import java.lang.StringBuilder
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -50,6 +53,12 @@ class FileViewModel @UiThread constructor() : ViewModel() {
 
     val isVideoPlaying = MutableLiveData<Boolean>()
 
+    val isText = MutableLiveData<Boolean>()
+
+    val text = MutableLiveData<String>()
+
+    val fileReadyEvent = MutableLiveData<Event<Boolean>>()
+
     val pdfRendererReadyEvent: MutableLiveData<Event<Boolean>> by lazy {
         MutableLiveData<Event<Boolean>>()
     }
@@ -100,45 +109,34 @@ class FileViewModel @UiThread constructor() : ViewModel() {
         fileName.value = name
 
         val extension = FileUtils.getExtensionFromFileName(name)
-        val mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+        val mime = FileUtils.getMimeTypeFromExtension(extension)
         when (FileUtils.getMimeType(mime)) {
             FileUtils.MimeType.Pdf -> {
                 Log.i("$TAG File [$file] seems to be a PDF")
-                isPdf.value = true
+                loadPdf()
-
-                viewModelScope.launch {
-                    withContext(Dispatchers.IO) {
-                        val input = ParcelFileDescriptor.open(
-                            File(file),
-                            ParcelFileDescriptor.MODE_READ_ONLY
-                        )
-                        pdfRenderer = PdfRenderer(input)
-                        val count = pdfRenderer.pageCount
-                        Log.i("$TAG $count pages in file $file")
-                        pdfPages.postValue(count.toString())
-                        pdfCurrentPage.postValue("1")
-                        pdfRendererReadyEvent.postValue(Event(true))
-                    }
-                }
             }
             FileUtils.MimeType.Image -> {
                 Log.i("$TAG File [$file] seems to be an image")
                 isImage.value = true
                 path.value = file
+                fileReadyEvent.value = Event(true)
             }
             FileUtils.MimeType.Video -> {
                 Log.i("$TAG File [$file] seems to be a video")
                 isVideo.value = true
                 isVideoPlaying.value = false
+                fileReadyEvent.value = Event(true)
             }
             FileUtils.MimeType.Audio -> {
                 // TODO: handle audio files
+                fileReadyEvent.value = Event(true)
             }
             FileUtils.MimeType.PlainText -> {
-                // TODO: handle plain text files
+                Log.i("$TAG File [$file] seems to be plain text")
+                loadPlainText()
             }
             else -> {
-                // TODO: open native app for unsupported files
+                fileReadyEvent.value = Event(false)
             }
         }
     }
@@ -261,6 +259,51 @@ class FileViewModel @UiThread constructor() : ViewModel() {
         }
     }
 
+    private fun loadPdf() {
+        isPdf.value = true
+
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                val input = ParcelFileDescriptor.open(
+                    File(filePath),
+                    ParcelFileDescriptor.MODE_READ_ONLY
+                )
+                pdfRenderer = PdfRenderer(input)
+                val count = pdfRenderer.pageCount
+                Log.i("$TAG $count pages in file $filePath")
+                pdfPages.postValue(count.toString())
+                pdfCurrentPage.postValue("1")
+                pdfRendererReadyEvent.postValue(Event(true))
+                fileReadyEvent.postValue(Event(true))
+            }
+        }
+    }
+
+    private fun loadPlainText() {
+        isText.value = true
+
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                try {
+                    val br = BufferedReader(FileReader(filePath))
+                    var line: String?
+                    val textBuilder = StringBuilder()
+                    while (br.readLine().also { line = it } != null) {
+                        textBuilder.append(line)
+                        textBuilder.append('\n')
+                    }
+                    br.close()
+                    text.postValue(textBuilder.toString())
+                    Log.i("$TAG Finished reading file [$filePath]")
+                    fileReadyEvent.postValue(Event(true))
+                    // TODO FIXME : improve performances !
+                } catch (e: Exception) {
+                    Log.e("$TAG Exception trying to read file [$filePath] as text: $e")
+                }
+            }
+        }
+    }
+
     @UiThread
     private suspend fun addContentToMediaStore(
         path: String
@@ -285,7 +328,7 @@ class FileViewModel @UiThread constructor() : ViewModel() {
         val relativePath = "$directory/$appName"
         val fileName = FileUtils.getNameFromFilePath(path)
         val extension = FileUtils.getExtensionFromFileName(fileName)
-        val mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+        val mime = FileUtils.getMimeTypeFromExtension(extension)
 
         val context = coreContext.context
         val mediaStoreFilePath = when {

app/src/main/java/org/linphone/utils/FileUtils.kt

@@ -65,21 +65,21 @@ class FileUtils {
         @AnyThread
         fun isExtensionImage(path: String): Boolean {
             val extension = getExtensionFromFileName(path)
-            val type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+            val type = getMimeTypeFromExtension(extension)
             return getMimeType(type) == MimeType.Image
         }
 
         @AnyThread
         fun isExtensionVideo(path: String): Boolean {
             val extension = getExtensionFromFileName(path)
-            val type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+            val type = getMimeTypeFromExtension(extension)
             return getMimeType(type) == MimeType.Video
         }
 
         @AnyThread
         fun isExtensionAudio(path: String): Boolean {
             val extension = getExtensionFromFileName(path)
-            val type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+            val type = getMimeTypeFromExtension(extension)
             return getMimeType(type) == MimeType.Audio
         }
 
@@ -96,12 +96,18 @@ class FileUtils {
             return extension.lowercase(Locale.getDefault())
         }
 
+        @AnyThread
+        fun getMimeTypeFromExtension(extension: String): String {
+            return MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension) ?: "file/$extension"
+        }
+
         @AnyThread
         fun getMimeType(type: String?): MimeType {
             if (type.isNullOrEmpty()) return MimeType.Unknown
             return when {
                 type.startsWith("image/") -> MimeType.Image
-                type.startsWith("text/plain") -> MimeType.PlainText
+                type.startsWith("text/") -> MimeType.PlainText
+                type.endsWith("/log") -> MimeType.PlainText
                 type.startsWith("video/") -> MimeType.Video
                 type.startsWith("audio/") -> MimeType.Audio
                 type.startsWith("application/pdf") -> MimeType.Pdf
@@ -220,7 +226,7 @@ class FileUtils {
                 }
 
                 val extension = getExtensionFromFileName(name)
-                val type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+                val type = getMimeTypeFromExtension(extension)
                 val isImage = getMimeType(type) == MimeType.Image
 
                 try {

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

@@ -190,7 +190,7 @@
                 android:layout_height="@dimen/chat_bubble_big_image_max_size"
                 android:adjustViewBounds="true"
                 android:scaleType="fitCenter"
-                android:visibility="@{model.filesList.size() == 1 && model.firstImagePath.length() >= 0 ? View.VISIBLE : View.GONE, default=gone}"
+                android:visibility="@{model.filesList.size() == 1 && model.firstImagePath.length() > 0 ? View.VISIBLE : View.GONE, default=gone}"
                 coilBubble="@{model.firstImagePath}"/>
 
             <ViewStub

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

@@ -153,7 +153,7 @@
                 android:layout_height="@dimen/chat_bubble_big_image_max_size"
                 android:adjustViewBounds="true"
                 android:scaleType="fitCenter"
-                android:visibility="@{model.filesList.size() == 1 && model.firstImagePath.length() >= 0 ? View.VISIBLE : View.GONE, default=gone}"
+                android:visibility="@{model.filesList.size() == 1 && model.firstImagePath.length() > 0 ? View.VISIBLE : View.GONE, default=gone}"
                 coilBubble="@{model.firstImagePath}"/>
 
             <ViewStub

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

@@ -82,6 +82,27 @@
             coilFile="@{viewModel.path}"
             android:visibility="@{viewModel.isImage ? View.VISIBLE : View.GONE, default=gone}" />
 
+        <ScrollView
+            android:id="@+id/text"
+            android:background="?attr/color_main2_000"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:visibility="@{viewModel.isText ? View.VISIBLE : View.GONE, default=gone}" >
+
+            <TextView
+                style="@style/default_text_style"
+                android:onClick="@{() -> viewModel.toggleFullScreen()}"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="10dp"
+                android:layout_marginEnd="10dp"
+                android:singleLine="false"
+                android:textIsSelectable="true"
+                android:textColor="?attr/color_main2_900"
+                android:text="@{viewModel.text}"/>
+
+        </ScrollView>
+
         <ImageView
             android:id="@+id/back"
             android:onClick="@{backClickListener}"
@@ -159,4 +180,5 @@
             app:layout_constraintEnd_toEndOf="parent"/>
 
     </androidx.constraintlayout.widget.ConstraintLayout>
+
 </layout>

app/src/main/res/values-night/themes.xml

@@ -28,6 +28,7 @@
         <item name="color_main2_600">@color/gray_main2_400</item>
         <item name="color_main2_700">@color/gray_main2_300</item>
         <item name="color_main2_800">@color/gray_main2_200</item>
+        <item name="color_main2_900">@color/white</item>
 
         <item name="color_grey_100">@color/gray_900</item>
         <item name="color_grey_200">@color/gray_800</item>

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

@@ -25,6 +25,7 @@
         <attr name="color_main2_600" format="color"/>
         <attr name="color_main2_700" format="color"/>
         <attr name="color_main2_800" format="color"/>
+        <attr name="color_main2_900" format="color"/>
 
         <attr name="color_grey_100" format="color"/>
         <attr name="color_grey_200" format="color"/>

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

@@ -29,6 +29,7 @@
         <item name="color_main2_600">@color/gray_main2_600</item>
         <item name="color_main2_700">@color/gray_main2_700</item>
         <item name="color_main2_800">@color/gray_main2_800</item>
+        <item name="color_main2_900">@color/black</item>
 
         <item name="color_grey_100">@color/gray_100</item>
         <item name="color_grey_200">@color/gray_200</item>