handle input responses

Yes you can use tabs as separators…

app/build.gradle

@@ -44,9 +44,9 @@ dependencies {
     implementation 'androidx.constraintlayout:constraintlayout:2.1.2'
     implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0"
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
-    implementation "androidx.room:room-runtime:2.3.0"
+    implementation "androidx.room:room-runtime:2.4.0"
     implementation 'com.google.android.material:material:1.4.0'
-    kapt "androidx.room:room-compiler:2.3.0"
+    kapt "androidx.room:room-compiler:2.4.0"
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

app/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="dev.lowrespalmtree.comet">
 
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application

app/src/main/java/dev/lowrespalmtree/comet/ContentAdapter.kt

@@ -10,31 +10,106 @@ import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
 import dev.lowrespalmtree.comet.databinding.*
 
-class ContentAdapter(private var content: List<Line>, private val listener: ContentAdapterListen) :
+/**
+ * Adapter for a rendered Gemtext page.
+ *
+ * Considering each content line as a different block/View to render works until you want to render
+ * preformatted lines as a whole block. This adapter approaches this issue by mapping each line to
+ * a block, where most of the time it will be a 1-to-1 relation, but for blocks and possibly quotes
+ * it could be a n-to-1 relation: many lines belong to the same block. This of course changes a bit
+ * the way we have to render things.
+ */
+class ContentAdapter(private val listener: ContentAdapterListen) :
     RecyclerView.Adapter<ContentAdapter.ContentViewHolder>() {
 
-    private var lastLineCount = 0
+    private var lines = listOf<Line>()
+    private var currentLine = 0
+    private var blocks = mutableListOf<ContentBlock>()
+    private var lastBlockCount = 0
 
     interface ContentAdapterListen {
         fun onLinkClick(url: String)
     }
 
-    override fun getItemViewType(position: Int): Int =
-        when (content[position]) {
-            is EmptyLine -> TYPE_EMPTY
-            is ParagraphLine -> TYPE_PARAGRAPH
-            is LinkLine -> TYPE_LINK
-            is PreFenceLine -> TYPE_PRE_FENCE
-            is PreTextLine -> TYPE_PRE_TEXT
-            is BlockquoteLine -> TYPE_BLOCKQUOTE
-            is ListItemLine -> TYPE_LIST_ITEM
-            is TitleLine -> when ((content[position] as TitleLine).level) {
-                1 -> TYPE_TITLE_1
-                2 -> TYPE_TITLE_2
-                3 -> TYPE_TITLE_3
-                else -> error("invalid title level")
+    sealed class ContentBlock {
+        object Empty : ContentBlock()
+        class Paragraph(val text: String) : ContentBlock()
+        class Title(val text: String, val level: Int) : ContentBlock()
+        class Link(val url: String, val label: String) : ContentBlock()
+        class Pre(val caption: String, var content: String, var closed: Boolean) : ContentBlock()
+        class Blockquote(val text: String) : ContentBlock()
+        class ListItem(val text: String) : ContentBlock()
+    }
+
+    /** Replace the content rendered by the recycler. */
+    @SuppressLint("NotifyDataSetChanged")
+    fun setLines(newLines: List<Line>) {
+        lines = newLines.toList()  // Shallow copy to avoid concurrent update issues.
+        if (lines.isEmpty()) {
+            Log.d(TAG, "setLines: empty content")
+            currentLine = 0
+            blocks = mutableListOf()
+            lastBlockCount = 0
+            notifyDataSetChanged()
+        } else {
+            while (currentLine < lines.size) {
+                when (val line = lines[currentLine]) {
+                    is EmptyLine -> blocks.add(ContentBlock.Empty)
+                    is ParagraphLine -> blocks.add(ContentBlock.Paragraph(line.text))
+                    is LinkLine -> blocks.add(ContentBlock.Link(line.url, line.label))
+                    is BlockquoteLine -> blocks.add(ContentBlock.Blockquote(line.text))
+                    is ListItemLine -> blocks.add(ContentBlock.ListItem(line.text))
+                    is TitleLine -> blocks.add(ContentBlock.Title(line.text, line.level))
+                    is PreFenceLine -> {
+                        var justClosedBlock = false
+                        if (blocks.isNotEmpty()) {
+                            val lastBlock = blocks.last()
+                            if (lastBlock is ContentBlock.Pre && !lastBlock.closed) {
+                                lastBlock.closed = true
+                                justClosedBlock = true
+                            }
+                        }
+                        if (!justClosedBlock)
+                            blocks.add(ContentBlock.Pre(line.caption, "", false))
+                    }
+                    is PreTextLine -> {
+                        val lastBlock = blocks.last()
+                        if (lastBlock is ContentBlock.Pre && !lastBlock.closed)
+                            lastBlock.content += line.text + "\n"
+                        else
+                            Log.e(TAG, "setLines: unexpected preformatted line")
+                    }
+                }
+                currentLine++
             }
-            else -> error("unknown line type")
+            val numAdded = blocks.size - lastBlockCount
+            Log.d(TAG, "setContent: added $numAdded items")
+            notifyItemRangeInserted(lastBlockCount, numAdded)
+        }
+        lastBlockCount = blocks.size
+    }
+
+    sealed class ContentViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        class Empty(binding: GemtextEmptyBinding) : ContentViewHolder(binding.root)
+        class Paragraph(val binding: GemtextParagraphBinding) : ContentViewHolder(binding.root)
+        class Title1(val binding: GemtextTitle1Binding) : ContentViewHolder(binding.root)
+        class Title2(val binding: GemtextTitle2Binding) : ContentViewHolder(binding.root)
+        class Title3(val binding: GemtextTitle3Binding) : ContentViewHolder(binding.root)
+        class Link(val binding: GemtextLinkBinding) : ContentViewHolder(binding.root)
+        class Pre(val binding: GemtextPreformattedBinding) : ContentViewHolder(binding.root)
+        class Blockquote(val binding: GemtextBlockquoteBinding) : ContentViewHolder(binding.root)
+        class ListItem(val binding: GemtextListItemBinding) : ContentViewHolder(binding.root)
+    }
+
+    override fun getItemViewType(position: Int): Int =
+        when (val block = blocks[position]) {
+            is ContentBlock.Empty -> TYPE_EMPTY
+            is ContentBlock.Paragraph -> TYPE_PARAGRAPH
+            is ContentBlock.Link -> TYPE_LINK
+            is ContentBlock.Blockquote -> TYPE_BLOCKQUOTE
+            is ContentBlock.ListItem -> TYPE_LIST_ITEM
+            is ContentBlock.Pre -> TYPE_PREFORMATTED
+            is ContentBlock.Title -> block.level  // ruse
         }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ContentViewHolder {
@@ -46,8 +121,7 @@ class ContentAdapter(private var content: List<Line>, private val listener: Cont
                 TYPE_TITLE_2 -> ContentViewHolder.Title2(GemtextTitle2Binding.inflate(it))
                 TYPE_TITLE_3 -> ContentViewHolder.Title3(GemtextTitle3Binding.inflate(it))
                 TYPE_LINK -> ContentViewHolder.Link(GemtextLinkBinding.inflate(it))
-                TYPE_PRE_FENCE -> ContentViewHolder.PreFence(GemtextEmptyBinding.inflate(it))
-                TYPE_PRE_TEXT -> ContentViewHolder.PreText(GemtextPreformattedBinding.inflate(it))
+                TYPE_PREFORMATTED -> ContentViewHolder.Pre(GemtextPreformattedBinding.inflate(it))
                 TYPE_BLOCKQUOTE -> ContentViewHolder.Blockquote(GemtextBlockquoteBinding.inflate(it))
                 TYPE_LIST_ITEM -> ContentViewHolder.ListItem(GemtextListItemBinding.inflate(it))
                 else -> error("invalid view type")
@@ -57,80 +131,45 @@ class ContentAdapter(private var content: List<Line>, private val listener: Cont
 
     @SuppressLint("SetTextI18n")
     override fun onBindViewHolder(holder: ContentViewHolder, position: Int) {
-        val line = content[position]
-        when (holder) {
-            is ContentViewHolder.Paragraph ->
-                holder.binding.textView.text = (line as ParagraphLine).text
-            is ContentViewHolder.Title1 -> holder.binding.textView.text = (line as TitleLine).text
-            is ContentViewHolder.Title2 -> holder.binding.textView.text = (line as TitleLine).text
-            is ContentViewHolder.Title3 -> holder.binding.textView.text = (line as TitleLine).text
-            is ContentViewHolder.Link -> {
-                val text = if ((line as LinkLine).label.isNotEmpty()) line.label else line.url
-                val underlined = SpannableString(text)
-                underlined.setSpan(UnderlineSpan(), 0, underlined.length, 0)
-                holder.binding.textView.text = underlined
-                holder.binding.root.setOnClickListener { listener.onLinkClick(line.url) }
+        when (val block = blocks[position]) {
+            is ContentBlock.Empty -> {}
+            is ContentBlock.Paragraph ->
+                (holder as ContentViewHolder.Paragraph).binding.textView.text = block.text
+            is ContentBlock.Blockquote ->
+                (holder as ContentViewHolder.Blockquote).binding.textView.text = block.text
+            is ContentBlock.ListItem ->
+                (holder as ContentViewHolder.ListItem).binding.textView.text = "\u25CF ${block.text}"
+            is ContentBlock.Title -> {
+                when (block.level) {
+                    1 -> (holder as ContentViewHolder.Title1).binding.textView.text = block.text
+                    2 -> (holder as ContentViewHolder.Title2).binding.textView.text = block.text
+                    3 -> (holder as ContentViewHolder.Title3).binding.textView.text = block.text
+                }
             }
-            is ContentViewHolder.PreText ->
-                holder.binding.textView.text = (line as PreTextLine).text
-            is ContentViewHolder.Blockquote ->
-                holder.binding.textView.text = (line as BlockquoteLine).text
-            is ContentViewHolder.ListItem ->
-                holder.binding.textView.text = "\u25CF ${(line as ListItemLine).text}"
-            else -> {}
+            is ContentBlock.Link -> {
+                val label = if (block.label.isNotBlank()) block.label else block.url
+                val underlinedLabel = SpannableString(label)
+                underlinedLabel.setSpan(UnderlineSpan(), 0, underlinedLabel.length, 0)
+                (holder as ContentViewHolder.Link).binding.textView.text = underlinedLabel
+                holder.binding.root.setOnClickListener { listener.onLinkClick(block.url) }
+            }
+            is ContentBlock.Pre ->
+                (holder as ContentViewHolder.Pre).binding.textView.text = block.content
         }
     }
 
-    override fun getItemCount(): Int = content.size
-
-    /**
-     * Replace the content rendered by the recycler.
-     *
-     * The new content list may or may not be the same object as the previous one, we don't
-     * assume anything. The assumptions this function do however are:
-     * - If the new content is empty, we are about to load new content, so clear the recycler.
-     * - If it's longer than before, we received new streamed content, so *append* data.
-     * - If it's shorter or the same size than before, we do not notify anything and let the caller
-     *   manage the changes itself.
-     */
-    @SuppressLint("NotifyDataSetChanged")
-    fun setContent(newContent: List<Line>) {
-        content = newContent.toList()  // Shallow copy to avoid concurrent update issues.
-        if (content.isEmpty()) {
-            Log.d(TAG, "setContent: empty content")
-            notifyDataSetChanged()
-        } else if (content.size > lastLineCount) {
-            val numAdded = content.size - lastLineCount
-            Log.d(TAG, "setContent: added $numAdded items")
-            notifyItemRangeInserted(lastLineCount, numAdded)
-        }
-        lastLineCount = content.size
-    }
-
-    sealed class ContentViewHolder(view: View) : RecyclerView.ViewHolder(view) {
-        class Empty(val binding: GemtextEmptyBinding) : ContentViewHolder(binding.root)
-        class Paragraph(val binding: GemtextParagraphBinding) : ContentViewHolder(binding.root)
-        class Title1(val binding: GemtextTitle1Binding) : ContentViewHolder(binding.root)
-        class Title2(val binding: GemtextTitle2Binding) : ContentViewHolder(binding.root)
-        class Title3(val binding: GemtextTitle3Binding) : ContentViewHolder(binding.root)
-        class Link(val binding: GemtextLinkBinding) : ContentViewHolder(binding.root)
-        class PreFence(val binding: GemtextEmptyBinding) : ContentViewHolder(binding.root)
-        class PreText(val binding: GemtextPreformattedBinding) : ContentViewHolder(binding.root)
-        class Blockquote(val binding: GemtextBlockquoteBinding) : ContentViewHolder(binding.root)
-        class ListItem(val binding: GemtextListItemBinding) : ContentViewHolder(binding.root)
-    }
+    override fun getItemCount(): Int = blocks.size
 
     companion object {
         const val TAG = "ContentRecycler"
         const val TYPE_EMPTY = 0
-        const val TYPE_PARAGRAPH = 1
-        const val TYPE_TITLE_1 = 2
-        const val TYPE_TITLE_2 = 3
-        const val TYPE_TITLE_3 = 4
+        const val TYPE_TITLE_1 = 1
+        const val TYPE_TITLE_2 = 2
+        const val TYPE_TITLE_3 = 3
+        const val TYPE_PARAGRAPH = 4
         const val TYPE_LINK = 5
-        const val TYPE_PRE_FENCE = 6
-        const val TYPE_PRE_TEXT = 7
-        const val TYPE_BLOCKQUOTE = 8
-        const val TYPE_LIST_ITEM = 9
+        const val TYPE_PREFORMATTED = 6
+        const val TYPE_BLOCKQUOTE = 7
+        const val TYPE_LIST_ITEM = 8
     }
 }

app/src/main/java/dev/lowrespalmtree/comet/Gemtext.kt

@@ -21,6 +21,7 @@ class ListItemLine(val text: String) : Line
 
 const val TAG = "Gemtext"
 
+/** Pipe incoming gemtext data into parsed Lines. */
 fun parseData(
     inChannel: Channel<ByteArray>,
     charset: Charset,
@@ -51,19 +52,23 @@ fun parseData(
     return channel
 }
 
+/** Parse a single line into a Line object. */
 private fun parseLine(line: CharBuffer, isPreformatted: Boolean): Line =
     when {
-        line.isEmpty() -> EmptyLine()
         line.startsWith("###") -> TitleLine(3, getCharsFrom(line, 3))
         line.startsWith("##") -> TitleLine(2, getCharsFrom(line, 2))
         line.startsWith("#") -> TitleLine(1, getCharsFrom(line, 1))
-        line.startsWith(">") -> BlockquoteLine(getCharsFrom(line, 1))
         line.startsWith("```") -> PreFenceLine(getCharsFrom(line, 3))
         line.startsWith("* ") -> ListItemLine(getCharsFrom(line, 2))
+        line.startsWith(">") -> getCharsFrom(line, 1)  // eh empty lines in quotes…
+            .run { if (isBlank()) EmptyLine() else BlockquoteLine(this) }
         line.startsWith("=>") -> getCharsFrom(line, 2)
-            .split(" ", limit = 2)
+            .split(" ", "\t", limit = 2)
             .run { LinkLine(get(0), if (size == 2) get(1).trimStart() else "") }
-        else -> if (isPreformatted) PreTextLine(line.toString()) else ParagraphLine(line.toString())
+        isPreformatted -> PreTextLine(line.toString())
+        line.isEmpty() -> EmptyLine()
+        else -> ParagraphLine(line.toString())
     }
 
+/** Get trimmed string from the char buffer starting from this position. */
 private fun getCharsFrom(line: CharBuffer, index: Int) = line.substring(index).trim()

app/src/main/java/dev/lowrespalmtree/comet/MainActivity.kt

@@ -6,16 +6,23 @@ import android.content.Intent
 import android.content.Intent.ACTION_VIEW
 import android.net.Uri
 import android.os.Bundle
+import android.text.InputType
 import android.util.Log
 import android.view.inputmethod.EditorInfo
 import android.view.inputmethod.InputMethodManager
+import android.widget.EditText
+import android.widget.FrameLayout
+import android.widget.FrameLayout.LayoutParams.MATCH_PARENT
+import android.widget.FrameLayout.LayoutParams.WRAP_CONTENT
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.setMargins
 import androidx.lifecycle.ViewModelProvider
 import androidx.recyclerview.widget.LinearLayoutManager
 import dev.lowrespalmtree.comet.databinding.ActivityMainBinding
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 
+
 @ExperimentalCoroutinesApi
 class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
     private lateinit var binding: ActivityMainBinding
@@ -39,7 +46,7 @@ class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
         setContentView(binding.root)
 
         pageViewModel = ViewModelProvider(this)[PageViewModel::class.java]
-        adapter = ContentAdapter(listOf(), this)
+        adapter = ContentAdapter(this)
         binding.contentRecycler.layoutManager = LinearLayoutManager(this)
         binding.contentRecycler.adapter = adapter
 
@@ -75,6 +82,16 @@ class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
         openUrl(url, base = if (currentUrl.isNotEmpty()) currentUrl else null)
     }
 
+    /**
+     * Open an URL.
+     *
+     * This function can be called after the user entered an URL in the app bar, clicked on a link,
+     * whatever. To make the user's life a bit easier, this function also makes a few guesses:
+     * - If the URL is not absolute, make it so from a base URL (e.g. the current URL) or assume
+     *   the user only typed a hostname without scheme and use a utility function to make it
+     *   absolute.
+     * - If it's an absolute Gemini URL with an empty path, use "/" instead as per the spec.
+     */
     private fun openUrl(url: String, base: String? = null, redirections: Int = 0) {
         if (redirections >= 5) {
             alert("Too many redirections.")
@@ -84,6 +101,8 @@ class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
         var uri = Uri.parse(url)
         if (!uri.isAbsolute) {
             uri = if (!base.isNullOrEmpty()) joinUrls(base, url) else toGeminiUri(uri)
+        } else if (uri.scheme == "gemini" && uri.path.isNullOrEmpty()) {
+            uri = uri.buildUpon().path("/").build()
         }
 
         when (uri.scheme) {
@@ -103,6 +122,7 @@ class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
                 binding.contentProgressBar.show()
             }
             PageViewModel.State.RECEIVING -> {
+                binding.appBar.setExpanded(true, true)
                 binding.contentSwipeLayout.isRefreshing = false
             }
         }
@@ -110,13 +130,34 @@ class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
 
     private fun updateLines(lines: List<Line>) {
         Log.d(TAG, "updateLines: ${lines.size} lines")
-        adapter.setContent(lines)
+        adapter.setLines(lines)
     }
 
     private fun handleEvent(event: PageViewModel.Event) {
         Log.d(TAG, "handleEvent: $event")
         if (!event.handled) {
             when (event) {
+                is PageViewModel.InputEvent -> {
+                    val editText = EditText(this).apply { inputType = InputType.TYPE_CLASS_TEXT }
+                    val inputView = FrameLayout(this).apply {
+                        addView(FrameLayout(this@MainActivity).apply {
+                            addView(editText)
+                            val params = FrameLayout.LayoutParams(MATCH_PARENT, WRAP_CONTENT)
+                            params.setMargins(resources.getDimensionPixelSize(R.dimen.text_margin))
+                            layoutParams = params
+                        })
+                    }
+                    AlertDialog.Builder(this)
+                        .setMessage(if (event.prompt.isNotEmpty()) event.prompt else "Input required")
+                        .setView(inputView)
+                        .setPositiveButton(android.R.string.ok) { _, _ ->
+                            val newUri = event.uri.buildUpon().query(editText.text.toString()).build()
+                            openUrl(newUri.toString(), base = currentUrl)
+                        }
+                        .setOnDismissListener { updateState(PageViewModel.State.IDLE) }
+                        .create()
+                        .show()
+                }
                 is PageViewModel.SuccessEvent -> {
                     currentUrl = event.uri
                     visitedUrls.add(event.uri)
@@ -127,8 +168,11 @@ class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
                 is PageViewModel.FailureEvent -> {
                     var message = event.details
                     if (!event.serverDetails.isNullOrEmpty())
-                        message += "\n\n" + "Server details: ${event.serverDetails}"
+                        message += "\n\nServer details: ${event.serverDetails}"
+                    if (!isConnectedToNetwork(this))
+                        message += "\n\nInternet may be inaccessible…"
                     alert(message, title = event.short)
+                    updateState(PageViewModel.State.IDLE)
                 }
             }
             event.handled = true
@@ -147,7 +191,7 @@ class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
         try {
             startActivity(Intent(ACTION_VIEW, uri))
         } catch (e: ActivityNotFoundException) {
-            alert("Can't open this URL.")
+            alert("Can't find an app to open \"${uri.scheme}\" URLs.")
         }
     }
 

app/src/main/java/dev/lowrespalmtree/comet/NetUtils.kt

@@ -0,0 +1,11 @@
+package dev.lowrespalmtree.comet
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.NetworkCapabilities
+
+fun isConnectedToNetwork(context: Context): Boolean {
+    val connManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+    val caps = connManager.getNetworkCapabilities(connManager.activeNetwork) ?: return false
+    return caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
+}

app/src/main/java/dev/lowrespalmtree/comet/PageViewModel.kt

@@ -25,6 +25,7 @@ class PageViewModel : ViewModel() {
     }
 
     abstract class Event(var handled: Boolean = false)
+    data class InputEvent(val uri: Uri, val prompt: String) : Event()
     data class SuccessEvent(val uri: String) : Event()
     data class RedirectEvent(val uri: String, val redirects: Int) : Event()
     data class FailureEvent(
@@ -73,12 +74,14 @@ class PageViewModel : ViewModel() {
 
             Log.i(TAG, "sendRequest: got ${response.code} with meta \"${response.meta}\"")
             when (response.code.getCategory()) {
+                Response.Code.Category.INPUT ->
+                    handleInputResponse(response, uri)
                 Response.Code.Category.SUCCESS ->
-                    handleRequestSuccess(response, uri)
+                    handleSuccessResponse(response, uri)
                 Response.Code.Category.REDIRECT ->
-                    handleRedirect(response, redirects = redirects + 1)
+                    handleRedirectResponse(response, redirects = redirects + 1)
                 Response.Code.Category.SERVER_ERROR, Response.Code.Category.CLIENT_ERROR ->
-                    handleError(response)
+                    handleErrorResponse(response)
                 else ->
                     signalError("Can't handle code ${response.code}.")
             }
@@ -87,10 +90,13 @@ class PageViewModel : ViewModel() {
 
     private fun signalError(message: String) {
         event.postValue(FailureEvent("Error", message))
-        state.postValue(State.IDLE)
     }
 
-    private suspend fun handleRequestSuccess(response: Response, uri: Uri) {
+    private fun handleInputResponse(response: Response, uri: Uri) {
+        event.postValue(InputEvent(uri, response.meta))
+    }
+
+    private suspend fun handleSuccessResponse(response: Response, uri: Uri) {
         state.postValue(State.RECEIVING)
 
         linesList.clear()
@@ -135,11 +141,11 @@ class PageViewModel : ViewModel() {
         state.postValue(State.IDLE)
     }
 
-    private fun handleRedirect(response: Response, redirects: Int) {
+    private fun handleRedirectResponse(response: Response, redirects: Int) {
         event.postValue(RedirectEvent(response.meta, redirects))
     }
 
-    private fun handleError(response: Response) {
+    private fun handleErrorResponse(response: Response) {
         val briefMessage = when (response.code) {
             Response.Code.TEMPORARY_FAILURE -> "40 Temporary failure"
             Response.Code.SERVER_UNAVAILABLE -> "41 Server unavailable"

app/src/main/java/dev/lowrespalmtree/comet/UriUtils.kt

@@ -1,7 +1,6 @@
 package dev.lowrespalmtree.comet
 
 import android.net.Uri
-import android.util.Log
 
 /**
  * Transform a relative URI to an absolute Gemini URI
@@ -15,6 +14,7 @@ fun toGeminiUri(uri: Uri): Uri =
     Uri.Builder()
         .scheme("gemini")
         .authority(uri.path)
+        .path("/")
         .query(uri.query)
         .fragment(uri.fragment)
         .build()
@@ -35,7 +35,7 @@ fun joinUrls(base: String, relative: String): Uri {
     )
     return Uri.Builder()
         .scheme(baseUri.scheme)
-        .authority(baseUri.authority)
+        .encodedAuthority(baseUri.authority)
         .path(newPath)
         .query(relUri.query)
         .fragment(relUri.fragment)

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
+    <stroke android:width="1dip" android:color="@color/black"/>
+</shape>

app/src/main/res/font/preformatted.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<font-family xmlns:app="http://schemas.android.com/apk/res-auto">
+    <font app:fontStyle="normal" app:fontWeight="400" app:font="@font/hack"/>
+</font-family>

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

@@ -11,12 +11,12 @@
         android:layout_width="match_parent"
         android:layout_height="56dp">
 
-        <com.google.android.material.appbar.CollapsingToolbarLayout
-            android:id="@+id/collapsing_toolbar"
+        <Toolbar
+            android:id="@+id/toolbar"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             app:contentScrim="?attr/colorPrimary"
-            app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"
+            app:layout_scrollFlags="scroll|enterAlways"
             app:toolbarId="@+id/toolbar">
 
             <EditText
@@ -31,7 +31,7 @@
                 android:text=""
                 tools:ignore="TextContrastCheck" />
 
-        </com.google.android.material.appbar.CollapsingToolbarLayout>
+        </Toolbar>
 
     </com.google.android.material.appbar.AppBarLayout>
 

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

@@ -1,12 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/text_view"
-    android:textSize="16sp"
-    android:textColor="@color/text"
-    android:textStyle="italic"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    style="@style/CometText"
+    android:textStyle="italic"
     android:paddingStart="32dp"
-    android:paddingEnd="16dp"
-    android:paddingTop="2dp"
-    android:paddingBottom="4dp" />
+    android:paddingEnd="16dp" />

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

@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="0dp"
-    android:layout_height="4dp" />
+    android:layout_height="0dp"
+    android:textSize="8sp"
+    tools:ignore="SmallSp" />

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

@@ -1,12 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/text_view"
-    android:textSize="16sp"
-    android:textColor="@color/teal_700"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:paddingStart="16dp"
-    android:paddingEnd="16dp"
-    android:paddingTop="2dp"
-    android:paddingBottom="4dp"
+    style="@style/CometText"
+    android:textColor="@color/teal_700"
     android:textIsSelectable="false" />

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

@@ -1,11 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/text_view"
-    android:textSize="16sp"
-    android:textColor="@color/text"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    style="@style/CometText"
     android:paddingStart="32dp"
-    android:paddingEnd="16dp"
-    android:paddingTop="2dp"
-    android:paddingBottom="4dp" />
+    android:paddingEnd="16dp" />

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

@@ -1,11 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/text_view"
-    android:textSize="16sp"
-    android:textColor="@color/text"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:paddingStart="16dp"
-    android:paddingEnd="16dp"
-    android:paddingTop="2dp"
-    android:paddingBottom="4dp" />
+    style="@style/CometText" />

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

@@ -1,13 +1,19 @@
 <?xml version="1.0" encoding="utf-8"?>
-<TextView xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/text_view"
-    android:textSize="14sp"
-    android:textColor="@color/text"
-    android:typeface="monospace"
-    android:layout_width="match_parent"
+<HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_height="wrap_content"
+    android:layout_width="match_parent"
     android:paddingStart="16dp"
-    android:paddingEnd="8dp"
-    android:paddingTop="2dp"
-    android:paddingBottom="2dp"
-    android:background="@color/purple_200" />
+    android:paddingEnd="16dp">
+    <TextView
+        android:id="@+id/text_view"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="14sp"
+        android:textColor="@color/text"
+        android:fontFamily="@font/preformatted"
+        android:typeface="monospace"
+        android:paddingStart="16dp"
+        android:paddingEnd="8dp"
+        android:paddingTop="4dp"
+        android:paddingBottom="4dp" />
+</HorizontalScrollView>

app/src/main/res/layout/gemtext_title1.xml

@@ -1,12 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/text_view"
-    android:textSize="30sp"
-    android:textColor="@color/text"
-    android:textStyle="bold"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:paddingStart="16dp"
-    android:paddingEnd="16dp"
-    android:paddingTop="16dp"
-    android:paddingBottom="4dp" />
+    style="@style/CometText"
+    android:textSize="30sp"
+    android:textStyle="bold"
+    android:paddingTop="16dp" />

app/src/main/res/layout/gemtext_title2.xml

@@ -1,12 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/text_view"
-    android:textSize="24sp"
-    android:textColor="@color/text"
-    android:textStyle="bold"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:paddingStart="16dp"
-    android:paddingEnd="16dp"
-    android:paddingTop="8dp"
-    android:paddingBottom="4dp" />
+    style="@style/CometText"
+    android:textSize="24sp"
+    android:textStyle="bold"
+    android:paddingTop="8dp" />

app/src/main/res/layout/gemtext_title3.xml

@@ -1,12 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/text_view"
-    android:textSize="18sp"
-    android:textColor="@color/text"
-    android:textStyle="bold"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:paddingStart="16dp"
-    android:paddingEnd="16dp"
-    android:paddingTop="8dp"
-    android:paddingBottom="4dp" />
+    style="@style/CometText"
+    android:textSize="18sp"
+    android:textStyle="bold"
+    android:paddingTop="8dp" />

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

@@ -6,6 +6,12 @@
     <color name="teal_200">#FF03DAC5</color>
     <color name="teal_700">#FF018786</color>
     <color name="black">#FF000000</color>
-    <color name="white">#FFFFFFFF</color>
-    <color name="text">#222222</color>
+
+    <color name="bright">#F3F4ED</color>
+    <color name="text_light">#536162</color>
+    <color name="text">#424642</color>
+    <color name="orange">#C06014</color>
+    <color name="orange_dark">#683C19</color>
+    <color name="teal">#14C0B2</color>
+    <color name="teal_dark">#147169</color>
 </resources>

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

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="CometText">
+        <item name="android:textSize">16sp</item>
+        <item name="android:textColor">@color/text</item>
+        <item name="android:paddingStart">16dp</item>
+        <item name="android:paddingEnd">16dp</item>
+        <item name="android:paddingTop">2dp</item>
+        <item name="android:paddingBottom">4dp</item>
+        <item name="android:textIsSelectable">true</item>
+    </style>
+</resources>

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

@@ -2,15 +2,17 @@
     <!-- Base application theme. -->
     <style name="Theme.Comet" parent="Theme.MaterialComponents.DayNight.NoActionBar">
         <!-- Primary brand color. -->
-        <item name="colorPrimary">@color/purple_200</item>
-        <item name="colorPrimaryVariant">@color/purple_500</item>
-        <item name="colorOnPrimary">@color/white</item>
+        <item name="colorPrimary">@color/orange</item>
+        <item name="colorPrimaryVariant">@color/orange_dark</item>
+        <item name="colorOnPrimary">@color/bright</item>
         <!-- Secondary brand color. -->
-        <item name="colorSecondary">@color/teal_200</item>
-        <item name="colorSecondaryVariant">@color/teal_700</item>
-        <item name="colorOnSecondary">@color/black</item>
+        <item name="colorSecondary">@color/teal</item>
+        <item name="colorSecondaryVariant">@color/teal_dark</item>
+        <item name="colorOnSecondary">@color/text</item>
         <!-- Status bar color. -->
         <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
         <!-- Customize your theme here. -->
+        <item name="android:windowBackground">@color/bright</item>
+        <item name="android:progressBackgroundTint">?attr/colorSecondaryVariant</item>
     </style>
 </resources>

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:7.0.3"
+        classpath "com.android.tools.build:gradle:7.0.4"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.0"
 
         // NOTE: Do not place your application dependencies here; they belong