PageAdapter: show visited links with another color
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a822287de2
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8c1bebf315
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@ -13,7 +13,7 @@ interface Line
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class EmptyLine : Line
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class ParagraphLine(val text: String) : Line
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class TitleLine(val level: Int, val text: String) : Line
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class LinkLine(val url: String, val label: String) : Line
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class LinkLine(val url: String, val label: String, var visited: Boolean = false) : Line
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class PreFenceLine(val caption: String) : Line
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class PreTextLine(val text: String) : Line
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class BlockquoteLine(val text: String) : Line
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@ -21,7 +21,7 @@ class ListItemLine(val text: String) : Line
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private const val TAG = "Gemtext"
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/** Pipe incoming gemtext data into parsed Lines. */
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/** Pipe incoming Gemtext data into parsed Lines. */
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fun parseData(
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inChannel: Channel<ByteArray>,
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charset: Charset,
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@ -38,6 +38,10 @@ object History {
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dao.update(entry.also { it.title = title; it.lastVisit = now })
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}
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suspend fun contains(uri: String): Boolean = get(uri) != null
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suspend fun get(uri: String): HistoryEntry? = Database.INSTANCE.historyEntryDao().get(uri)
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suspend fun getAll(): List<HistoryEntry> = Database.INSTANCE.historyEntryDao().getAll()
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suspend fun getLast(): HistoryEntry? = Database.INSTANCE.historyEntryDao().getLast()
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@ -1,6 +1,7 @@
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package dev.lowrespalmtree.comet
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import android.os.Bundle
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import android.util.Log
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import android.view.MenuItem
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import androidx.appcompat.app.AppCompatActivity
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import androidx.core.os.bundleOf
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@ -15,6 +16,7 @@ class MainActivity : AppCompatActivity() {
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private var nhf: NavHostFragment? = null
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override fun onCreate(savedInstanceState: Bundle?) {
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Log.i(TAG, "onCreate")
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super.onCreate(savedInstanceState)
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binding = ActivityMainBinding.inflate(layoutInflater)
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setContentView(binding.root)
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@ -32,4 +34,8 @@ class MainActivity : AppCompatActivity() {
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nhf?.navController?.navigate(R.id.action_global_pageFragment, bundle)
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binding.drawerLayout.closeDrawers()
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}
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companion object {
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private const val TAG = "MainActivity"
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}
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}
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@ -1,6 +1,7 @@
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package dev.lowrespalmtree.comet
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import android.annotation.SuppressLint
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import android.net.Uri
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import android.util.Log
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import android.view.LayoutInflater
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import android.view.View
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@ -33,7 +34,7 @@ class PageAdapter(private val listener: Listener) :
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object Empty : ContentBlock()
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class Paragraph(val text: String) : ContentBlock()
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class Title(val text: String, val level: Int) : ContentBlock()
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class Link(val url: String, val label: String) : ContentBlock()
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class Link(val url: String, val label: String, val visited: Boolean) : ContentBlock()
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class Pre(val caption: String, var content: String, var closed: Boolean) : ContentBlock()
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class Blockquote(var text: String) : ContentBlock()
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class ListItem(val text: String) : ContentBlock()
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@ -54,7 +55,7 @@ class PageAdapter(private val listener: Listener) :
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when (val line = lines[currentLine]) {
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is EmptyLine -> blocks.add(ContentBlock.Empty)
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is ParagraphLine -> blocks.add(ContentBlock.Paragraph(line.text))
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is LinkLine -> blocks.add(ContentBlock.Link(line.url, line.label))
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is LinkLine -> blocks.add(ContentBlock.Link(line.url, line.label, line.visited))
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is ListItemLine -> blocks.add(ContentBlock.ListItem(line.text))
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is TitleLine -> blocks.add(ContentBlock.Title(line.text, line.level))
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is PreFenceLine -> {
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@ -95,8 +96,8 @@ class PageAdapter(private val listener: Listener) :
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lastBlockCount = blocks.size
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}
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sealed class ContentViewHolder(view: View) : RecyclerView.ViewHolder(view) {
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class Empty(binding: GemtextEmptyBinding) : ContentViewHolder(binding.root)
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sealed class ContentViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
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class Empty(val binding: GemtextEmptyBinding) : ContentViewHolder(binding.root)
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class Paragraph(val binding: GemtextParagraphBinding) : ContentViewHolder(binding.root)
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class Title1(val binding: GemtextTitle1Binding) : ContentViewHolder(binding.root)
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class Title2(val binding: GemtextTitle2Binding) : ContentViewHolder(binding.root)
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@ -156,6 +157,15 @@ class PageAdapter(private val listener: Listener) :
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val label = block.label.ifBlank { block.url }
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(holder as ContentViewHolder.Link).binding.textView.text = label
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holder.binding.root.setOnClickListener { listener.onLinkClick(block.url) }
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// Color links differently if it has been already visited or not.
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val resources = holder.binding.root.context.resources
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holder.binding.textView.setTextColor(
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if (block.visited)
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resources.getColor(R.color.link_visited, null)
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else
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resources.getColor(R.color.link, null)
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)
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}
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is ContentBlock.Pre ->
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(holder as ContentViewHolder.Pre).binding.textView.text = block.content
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@ -51,7 +51,7 @@ class PageFragment : Fragment(), PageAdapter.Listener {
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binding.contentSwipeLayout.setOnRefreshListener { openUrl(vm.currentUrl) }
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vm.state.observe(viewLifecycleOwner) { updateState(it) }
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vm.lines.observe(viewLifecycleOwner) { updateLines(it) }
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vm.lines.observe(viewLifecycleOwner) { updateLines(it.second, it.first) }
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vm.event.observe(viewLifecycleOwner) { handleEvent(it) }
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activity?.onBackPressedDispatcher?.addCallback(viewLifecycleOwner) { onBackPressed() }
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@ -151,8 +151,8 @@ class PageFragment : Fragment(), PageAdapter.Listener {
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}
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}
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private fun updateLines(lines: List<Line>) {
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Log.d(TAG, "updateLines: ${lines.size} lines")
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private fun updateLines(lines: List<Line>, url: String) {
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Log.d(TAG, "updateLines: ${lines.size} lines from $url")
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adapter.setLines(lines)
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}
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@ -6,6 +6,7 @@ import androidx.lifecycle.MutableLiveData
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import androidx.lifecycle.SavedStateHandle
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.viewModelScope
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import dev.lowrespalmtree.comet.utils.joinUrls
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import kotlinx.coroutines.*
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import kotlinx.coroutines.channels.onSuccess
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import java.net.ConnectException
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@ -21,8 +22,8 @@ class PageViewModel(@Suppress("unused") private val savedStateHandle: SavedState
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var loadingUrl: Uri? = null
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/** Observable page viewer state. */
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val state: MutableLiveData<State> by lazy { MutableLiveData<State>(State.IDLE) }
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/** Observable page viewer lines (backed up by `linesList` but updated less often). */
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val lines: MutableLiveData<List<Line>> by lazy { MutableLiveData<List<Line>>() }
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/** Observable page viewer lines (backed up by `linesList` but updated less often). Left element is associated URL. */
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val lines: MutableLiveData<Pair<String, List<Line>>> by lazy { MutableLiveData<Pair<String, List<Line>>>() }
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/** Observable page viewer latest event. */
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val event: MutableLiveData<Event> by lazy { MutableLiveData<Event>() }
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/** A non-saved list of visited URLs. Not an history, just used for going back. */
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@ -113,9 +114,10 @@ class PageViewModel(@Suppress("unused") private val savedStateHandle: SavedState
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@ExperimentalCoroutinesApi
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private suspend fun handleSuccessResponse(response: Response, uri: Uri) {
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state.postValue(State.RECEIVING)
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val uriString = uri.toString()
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linesList.clear()
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lines.postValue(linesList)
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lines.postValue(Pair(uriString, linesList))
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val charset = Charset.defaultCharset()
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var mainTitle: String? = null
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var lastUpdate = System.currentTimeMillis()
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@ -126,7 +128,16 @@ class PageViewModel(@Suppress("unused") private val savedStateHandle: SavedState
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while (!lineChannel.isClosedForReceive) {
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val lineChannelResult = withTimeout(100) { lineChannel.tryReceive() }
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lineChannelResult.onSuccess { line ->
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if (line is LinkLine) {
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// Mark visited links here as we have a access to the history.
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val fullUrl =
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if (Uri.parse(line.url).isAbsolute) line.url
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else joinUrls(uriString, line.url).toString()
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if (History.contains(fullUrl))
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line.visited = true
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}
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linesList.add(line)
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// Get the first level 1 header as the page main title.
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if (mainTitle == null && line is TitleLine && line.level == 1)
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mainTitle = line.text
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}
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@ -135,7 +146,7 @@ class PageViewModel(@Suppress("unused") private val savedStateHandle: SavedState
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if (linesList.size > lastNumLines) {
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val time = System.currentTimeMillis()
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if (time - lastUpdate >= 100) {
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lines.postValue(linesList)
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lines.postValue(Pair(uriString, linesList))
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lastUpdate = time
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lastNumLines = linesList.size
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}
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@ -147,7 +158,7 @@ class PageViewModel(@Suppress("unused") private val savedStateHandle: SavedState
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return
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}
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Log.d(TAG, "handleSuccessResponse: done parsing line data")
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lines.postValue(linesList)
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lines.postValue(Pair(uriString, linesList))
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// We record the history entry here: it's nice because we have the main title available
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// and we're already in a coroutine for database access.
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@ -8,7 +8,8 @@
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<color name="main_accent_dark">#073642</color>
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<color name="second_accent">#2aa198</color>
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<color name="second_accent_dark">#073642</color>
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<color name="link">#2aa198</color>
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<color name="link">#268bd2</color>
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<color name="link_visited">#2aa198</color>
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<color name="url_bar">#fdf6e3</color>
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<color name="url_bar_loading">#586e75</color>
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</resources>
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@ -11,6 +11,7 @@
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<color name="second_accent">#6c71c4</color>
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<color name="second_accent_dark">#073642</color>
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<color name="link">#268bd2</color>
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<color name="link_visited">#2aa198</color>
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<color name="url_bar">#002b36</color>
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<color name="url_bar_loading">#fdf6e3</color>
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<!--
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