move page viewer logic into a fragment
This commit is contained in:
parent
6eb9c142cc
commit
09e19a1a76
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@ -19,7 +19,7 @@ import dev.lowrespalmtree.comet.databinding.*
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* it could be a n-to-1 relation: many lines belong to the same block. This of course changes a bit
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* the way we have to render things.
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*/
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class ContentAdapter(private val listener: ContentAdapterListen) :
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class ContentAdapter(private val listener: ContentAdapterListener) :
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RecyclerView.Adapter<ContentAdapter.ContentViewHolder>() {
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private var lines = listOf<Line>()
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@ -27,7 +27,7 @@ class ContentAdapter(private val listener: ContentAdapterListen) :
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private var blocks = mutableListOf<ContentBlock>()
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private var lastBlockCount = 0
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interface ContentAdapterListen {
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interface ContentAdapterListener {
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fun onLinkClick(url: String)
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}
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@ -1,200 +1,31 @@
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package dev.lowrespalmtree.comet
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import android.app.Activity
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import android.content.ActivityNotFoundException
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import android.content.Intent
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import android.content.Intent.ACTION_VIEW
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import android.net.Uri
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import android.os.Bundle
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import android.text.InputType
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import android.util.Log
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import android.view.inputmethod.EditorInfo
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import android.view.inputmethod.InputMethodManager
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import android.widget.EditText
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import android.widget.FrameLayout
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import android.widget.FrameLayout.LayoutParams.MATCH_PARENT
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import android.widget.FrameLayout.LayoutParams.WRAP_CONTENT
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import androidx.appcompat.app.AlertDialog
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import androidx.appcompat.app.AppCompatActivity
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import androidx.core.view.setMargins
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import androidx.lifecycle.ViewModelProvider
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import androidx.recyclerview.widget.LinearLayoutManager
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import dev.lowrespalmtree.comet.databinding.ActivityMainBinding
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import kotlinx.coroutines.ExperimentalCoroutinesApi
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@ExperimentalCoroutinesApi
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class MainActivity : AppCompatActivity(), ContentAdapter.ContentAdapterListen {
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private lateinit var binding: ActivityMainBinding
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private lateinit var pageViewModel: PageViewModel
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private lateinit var adapter: ContentAdapter
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/** Property to access and set the current address bar URL value. */
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private var currentUrl
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get() = binding.addressBar.text.toString()
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set(value) = binding.addressBar.setText(value)
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/** A non-saved list of visited URLs. Not an history, just used for going back. */
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private val visitedUrls = mutableListOf<String>()
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class MainActivity : AppCompatActivity() {
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_main)
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Database.init(applicationContext)
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Database.init(applicationContext) // TODO move to App Startup?
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binding = ActivityMainBinding.inflate(layoutInflater)
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setContentView(binding.root)
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pageViewModel = ViewModelProvider(this)[PageViewModel::class.java]
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adapter = ContentAdapter(this)
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binding.contentRecycler.layoutManager = LinearLayoutManager(this)
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binding.contentRecycler.adapter = adapter
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binding.addressBar.setOnEditorActionListener { view, actionId, _ ->
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if (actionId == EditorInfo.IME_ACTION_DONE) {
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openUrl(view.text.toString())
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val imm = getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
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imm.hideSoftInputFromWindow(view.windowToken, 0)
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view.clearFocus()
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true
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} else {
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false
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if (savedInstanceState == null) {
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supportFragmentManager
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.beginTransaction()
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.add(R.id.main_content, PageViewFragment().apply { arguments = intent.extras })
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.commit()
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}
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}
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binding.contentSwipeLayout.setOnRefreshListener { openUrl(currentUrl) }
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pageViewModel.state.observe(this, { updateState(it) })
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pageViewModel.lines.observe(this, { updateLines(it) })
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pageViewModel.event.observe(this, { handleEvent(it) })
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}
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override fun onBackPressed() {
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visitedUrls.removeLastOrNull() // Always remove current page first.
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val previousUrl = visitedUrls.removeLastOrNull()
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if (previousUrl != null)
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openUrl(previousUrl)
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else
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// TODO pass to PageViewFragment
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super.onBackPressed()
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}
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override fun onLinkClick(url: String) {
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openUrl(url, base = if (currentUrl.isNotEmpty()) currentUrl else null)
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}
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/**
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* Open an URL.
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*
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* This function can be called after the user entered an URL in the app bar, clicked on a link,
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* whatever. To make the user's life a bit easier, this function also makes a few guesses:
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* - If the URL is not absolute, make it so from a base URL (e.g. the current URL) or assume
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* the user only typed a hostname without scheme and use a utility function to make it
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* absolute.
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* - If it's an absolute Gemini URL with an empty path, use "/" instead as per the spec.
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*/
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private fun openUrl(url: String, base: String? = null, redirections: Int = 0) {
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if (redirections >= 5) {
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alert("Too many redirections.")
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return
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}
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var uri = Uri.parse(url)
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if (!uri.isAbsolute) {
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uri = if (!base.isNullOrEmpty()) joinUrls(base, url) else toGeminiUri(uri)
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} else if (uri.scheme == "gemini" && uri.path.isNullOrEmpty()) {
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uri = uri.buildUpon().path("/").build()
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}
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when (uri.scheme) {
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"gemini" -> pageViewModel.sendGeminiRequest(uri)
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else -> openUnknownScheme(uri)
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}
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}
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private fun updateState(state: PageViewModel.State) {
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Log.d(TAG, "updateState: $state")
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when (state) {
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PageViewModel.State.IDLE -> {
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binding.contentProgressBar.hide()
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binding.contentSwipeLayout.isRefreshing = false
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}
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PageViewModel.State.CONNECTING -> {
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binding.contentProgressBar.show()
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}
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PageViewModel.State.RECEIVING -> {
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binding.appBar.setExpanded(true, true)
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binding.contentSwipeLayout.isRefreshing = false
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}
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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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adapter.setLines(lines)
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}
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private fun handleEvent(event: PageViewModel.Event) {
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Log.d(TAG, "handleEvent: $event")
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if (!event.handled) {
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when (event) {
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is PageViewModel.InputEvent -> {
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val editText = EditText(this).apply { inputType = InputType.TYPE_CLASS_TEXT }
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val inputView = FrameLayout(this).apply {
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addView(FrameLayout(this@MainActivity).apply {
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addView(editText)
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val params = FrameLayout.LayoutParams(MATCH_PARENT, WRAP_CONTENT)
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params.setMargins(resources.getDimensionPixelSize(R.dimen.text_margin))
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layoutParams = params
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})
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}
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AlertDialog.Builder(this)
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.setMessage(if (event.prompt.isNotEmpty()) event.prompt else "Input required")
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.setView(inputView)
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.setPositiveButton(android.R.string.ok) { _, _ ->
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val newUri = event.uri.buildUpon().query(editText.text.toString()).build()
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openUrl(newUri.toString(), base = currentUrl)
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}
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.setOnDismissListener { updateState(PageViewModel.State.IDLE) }
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.create()
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.show()
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}
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is PageViewModel.SuccessEvent -> {
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currentUrl = event.uri
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visitedUrls.add(event.uri)
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}
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is PageViewModel.RedirectEvent -> {
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openUrl(event.uri, base = currentUrl, redirections = event.redirects)
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}
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is PageViewModel.FailureEvent -> {
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var message = event.details
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if (!event.serverDetails.isNullOrEmpty())
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message += "\n\nServer details: ${event.serverDetails}"
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if (!isConnectedToNetwork(this))
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message += "\n\nInternet may be inaccessible…"
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alert(message, title = event.short)
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updateState(PageViewModel.State.IDLE)
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}
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}
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event.handled = true
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}
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}
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private fun alert(message: String, title: String? = null) {
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AlertDialog.Builder(this)
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.setTitle(title ?: getString(R.string.error_alert_title))
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.setMessage(message)
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.create()
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.show()
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}
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private fun openUnknownScheme(uri: Uri) {
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try {
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startActivity(Intent(ACTION_VIEW, uri))
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} catch (e: ActivityNotFoundException) {
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alert("Can't find an app to open \"${uri.scheme}\" URLs.")
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}
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}
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companion object {
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const val TAG = "MainActivity"
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}
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210
app/src/main/java/dev/lowrespalmtree/comet/PageViewFragment.kt
Normal file
210
app/src/main/java/dev/lowrespalmtree/comet/PageViewFragment.kt
Normal file
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@ -0,0 +1,210 @@
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package dev.lowrespalmtree.comet
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import android.app.Activity
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import android.content.ActivityNotFoundException
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import android.content.Intent
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import android.net.Uri
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import android.os.Bundle
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import android.text.InputType
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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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import android.view.ViewGroup
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import android.view.inputmethod.EditorInfo
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import android.view.inputmethod.InputMethodManager
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import android.widget.EditText
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import android.widget.FrameLayout
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import androidx.appcompat.app.AlertDialog
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import androidx.core.view.setMargins
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import androidx.fragment.app.Fragment
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import androidx.lifecycle.ViewModelProvider
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import androidx.recyclerview.widget.LinearLayoutManager
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import dev.lowrespalmtree.comet.databinding.FragmentPageViewBinding
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import kotlinx.coroutines.ExperimentalCoroutinesApi
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@ExperimentalCoroutinesApi
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class PageViewFragment : Fragment(), ContentAdapter.ContentAdapterListener {
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private lateinit var binding: FragmentPageViewBinding
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private lateinit var pageViewModel: PageViewModel
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private lateinit var adapter: ContentAdapter
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/** Property to access and set the current address bar URL value. */
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private var currentUrl
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get() = binding.addressBar.text.toString()
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set(value) = binding.addressBar.setText(value)
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/** A non-saved list of visited URLs. Not an history, just used for going back. */
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private val visitedUrls = mutableListOf<String>()
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override fun onCreateView(
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inflater: LayoutInflater,
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container: ViewGroup?,
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savedInstanceState: Bundle?
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): View {
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binding = FragmentPageViewBinding.inflate(layoutInflater)
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return binding.root
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}
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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pageViewModel = ViewModelProvider(this)[PageViewModel::class.java]
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adapter = ContentAdapter(this)
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binding.contentRecycler.layoutManager = LinearLayoutManager(requireContext())
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binding.contentRecycler.adapter = adapter
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binding.addressBar.setOnEditorActionListener { editText, actionId, _ ->
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if (actionId == EditorInfo.IME_ACTION_DONE) {
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openUrl(editText.text.toString())
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activity?.run {
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val imm = getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
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imm.hideSoftInputFromWindow(editText.windowToken, 0)
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}
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editText.clearFocus()
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true
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} else {
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false
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}
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}
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binding.contentSwipeLayout.setOnRefreshListener { openUrl(currentUrl) }
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pageViewModel.state.observe(viewLifecycleOwner, { updateState(it) })
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pageViewModel.lines.observe(viewLifecycleOwner, { updateLines(it) })
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pageViewModel.event.observe(viewLifecycleOwner, { handleEvent(it) })
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}
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override fun onLinkClick(url: String) {
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openUrl(url, base = if (currentUrl.isNotEmpty()) currentUrl else null)
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}
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fun onBackPressed(): Boolean {
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visitedUrls.removeLastOrNull() // Always remove current page first.
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val previousUrl = visitedUrls.removeLastOrNull()
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if (previousUrl != null) {
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openUrl(previousUrl)
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return true
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}
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return false
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}
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/**
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* Open an URL.
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*
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* This function can be called after the user entered an URL in the app bar, clicked on a link,
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* whatever. To make the user's life a bit easier, this function also makes a few guesses:
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* - If the URL is not absolute, make it so from a base URL (e.g. the current URL) or assume
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* the user only typed a hostname without scheme and use a utility function to make it
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* absolute.
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* - If it's an absolute Gemini URL with an empty path, use "/" instead as per the spec.
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*/
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private fun openUrl(url: String, base: String? = null, redirections: Int = 0) {
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if (redirections >= 5) {
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alert("Too many redirections.")
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return
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}
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var uri = Uri.parse(url)
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if (!uri.isAbsolute) {
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uri = if (!base.isNullOrEmpty()) joinUrls(base, url) else toGeminiUri(uri)
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} else if (uri.scheme == "gemini" && uri.path.isNullOrEmpty()) {
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uri = uri.buildUpon().path("/").build()
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}
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when (uri.scheme) {
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"gemini" -> pageViewModel.sendGeminiRequest(uri)
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else -> openUnknownScheme(uri)
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}
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}
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private fun updateState(state: PageViewModel.State) {
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Log.d(TAG, "updateState: $state")
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when (state) {
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PageViewModel.State.IDLE -> {
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binding.contentProgressBar.hide()
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binding.contentSwipeLayout.isRefreshing = false
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}
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PageViewModel.State.CONNECTING -> {
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binding.contentProgressBar.show()
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}
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PageViewModel.State.RECEIVING -> {
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binding.appBar.setExpanded(true, true)
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binding.contentSwipeLayout.isRefreshing = false
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}
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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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adapter.setLines(lines)
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}
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private fun handleEvent(event: PageViewModel.Event) {
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Log.d(TAG, "handleEvent: $event")
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if (!event.handled) {
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when (event) {
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is PageViewModel.InputEvent -> {
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val editText = EditText(requireContext())
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editText.inputType = InputType.TYPE_CLASS_TEXT
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val inputView = FrameLayout(requireContext()).apply {
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addView(FrameLayout(requireContext()).apply {
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addView(editText)
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val params = FrameLayout.LayoutParams(
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FrameLayout.LayoutParams.MATCH_PARENT,
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FrameLayout.LayoutParams.WRAP_CONTENT
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)
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params.setMargins(resources.getDimensionPixelSize(R.dimen.text_margin))
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layoutParams = params
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})
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}
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AlertDialog.Builder(requireContext())
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.setMessage(if (event.prompt.isNotEmpty()) event.prompt else "Input required")
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.setView(inputView)
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.setPositiveButton(android.R.string.ok) { _, _ ->
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val newUri =
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event.uri.buildUpon().query(editText.text.toString()).build()
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openUrl(newUri.toString(), base = currentUrl)
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}
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.setOnDismissListener { updateState(PageViewModel.State.IDLE) }
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.create()
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.show()
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}
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is PageViewModel.SuccessEvent -> {
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currentUrl = event.uri
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visitedUrls.add(event.uri)
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}
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is PageViewModel.RedirectEvent -> {
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openUrl(event.uri, base = currentUrl, redirections = event.redirects)
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}
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is PageViewModel.FailureEvent -> {
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var message = event.details
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if (!event.serverDetails.isNullOrEmpty())
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message += "\n\nServer details: ${event.serverDetails}"
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if (!isConnectedToNetwork(requireContext()))
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message += "\n\nInternet may be inaccessible…"
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alert(message, title = event.short)
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updateState(PageViewModel.State.IDLE)
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}
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}
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event.handled = true
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}
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}
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private fun alert(message: String, title: String? = null) {
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AlertDialog.Builder(requireContext())
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.setTitle(title ?: getString(R.string.error_alert_title))
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.setMessage(message)
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.create()
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.show()
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}
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private fun openUnknownScheme(uri: Uri) {
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try {
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startActivity(Intent(Intent.ACTION_VIEW, uri))
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} catch (e: ActivityNotFoundException) {
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alert("Can't find an app to open \"${uri.scheme}\" URLs.")
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}
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}
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companion object {
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private const val TAG = "PageViewFragment"
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}
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}
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@ -1,71 +1,7 @@
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<?xml version="1.0" encoding="utf-8"?>
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<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
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<FrameLayout
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools"
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android:id="@+id/root"
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<com.google.android.material.appbar.AppBarLayout
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android:id="@+id/app_bar"
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android:layout_width="match_parent"
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android:layout_height="56dp">
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<Toolbar
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android:id="@+id/toolbar"
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android:layout_width="match_parent"
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xmlns:android="http://schemas.android.com/apk/res/android"
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android:id="@+id/main_content"
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android:layout_height="match_parent"
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app:contentScrim="?attr/colorPrimary"
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app:layout_scrollFlags="scroll|enterAlways"
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app:toolbarId="@+id/toolbar">
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<EditText
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android:id="@+id/address_bar"
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android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
android:layout_margin="4dp"
|
||||
android:hint="@string/url"
|
||||
android:imeOptions="actionDone|actionGo"
|
||||
android:importantForAutofill="no"
|
||||
android:inputType="textUri"
|
||||
android:text=""
|
||||
tools:ignore="TextContrastCheck" />
|
||||
|
||||
</Toolbar>
|
||||
|
||||
</com.google.android.material.appbar.AppBarLayout>
|
||||
|
||||
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
|
||||
android:id="@+id/content_swipe_layout"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
app:layout_behavior="@string/appbar_scrolling_view_behavior">
|
||||
|
||||
<RelativeLayout
|
||||
android:id="@+id/content_inner_layout"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
app:layout_behavior="@string/appbar_scrolling_view_behavior">
|
||||
|
||||
<androidx.recyclerview.widget.RecyclerView
|
||||
android:id="@+id/content_recycler"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:orientation="vertical"
|
||||
app:layout_constraintTop_toTopOf="parent" />
|
||||
|
||||
<androidx.core.widget.ContentLoadingProgressBar
|
||||
android:id="@+id/content_progress_bar"
|
||||
style="?android:attr/progressBarStyleHorizontal"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="16dp"
|
||||
android:layout_alignParentTop="true"
|
||||
android:layout_marginTop="-8dp"
|
||||
android:indeterminate="true"
|
||||
android:visibility="gone" />
|
||||
|
||||
</RelativeLayout>
|
||||
|
||||
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
|
||||
|
||||
</androidx.coordinatorlayout.widget.CoordinatorLayout>
|
||||
android:layout_width="match_parent" />
|
||||
71
app/src/main/res/layout/fragment_page_view.xml
Normal file
71
app/src/main/res/layout/fragment_page_view.xml
Normal file
|
|
@ -0,0 +1,71 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
|
||||
xmlns:app="http://schemas.android.com/apk/res-auto"
|
||||
xmlns:tools="http://schemas.android.com/tools"
|
||||
android:id="@+id/root"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent">
|
||||
|
||||
<com.google.android.material.appbar.AppBarLayout
|
||||
android:id="@+id/app_bar"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="56dp">
|
||||
|
||||
<Toolbar
|
||||
android:id="@+id/toolbar"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
app:contentScrim="?attr/colorPrimary"
|
||||
app:layout_scrollFlags="scroll|enterAlways"
|
||||
app:toolbarId="@+id/toolbar">
|
||||
|
||||
<EditText
|
||||
android:id="@+id/address_bar"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
android:layout_margin="4dp"
|
||||
android:hint="@string/url"
|
||||
android:imeOptions="actionDone|actionGo"
|
||||
android:importantForAutofill="no"
|
||||
android:inputType="textUri"
|
||||
android:text=""
|
||||
tools:ignore="TextContrastCheck" />
|
||||
|
||||
</Toolbar>
|
||||
|
||||
</com.google.android.material.appbar.AppBarLayout>
|
||||
|
||||
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
|
||||
android:id="@+id/content_swipe_layout"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
app:layout_behavior="@string/appbar_scrolling_view_behavior">
|
||||
|
||||
<RelativeLayout
|
||||
android:id="@+id/content_inner_layout"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
app:layout_behavior="@string/appbar_scrolling_view_behavior">
|
||||
|
||||
<androidx.recyclerview.widget.RecyclerView
|
||||
android:id="@+id/content_recycler"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:orientation="vertical"
|
||||
app:layout_constraintTop_toTopOf="parent" />
|
||||
|
||||
<androidx.core.widget.ContentLoadingProgressBar
|
||||
android:id="@+id/content_progress_bar"
|
||||
style="?android:attr/progressBarStyleHorizontal"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="16dp"
|
||||
android:layout_alignParentTop="true"
|
||||
android:layout_marginTop="-8dp"
|
||||
android:indeterminate="true"
|
||||
android:visibility="gone" />
|
||||
|
||||
</RelativeLayout>
|
||||
|
||||
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
|
||||
|
||||
</androidx.coordinatorlayout.widget.CoordinatorLayout>
|
||||
Reference in a new issue