remove unneeded viewmodel (#1925)

app/src/main/java/com/kickstarter/ui/activities/WebViewActivity.kt

@@ -1,42 +1,31 @@
 package com.kickstarter.ui.activities
 
 import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.addCallback
 import com.kickstarter.databinding.WebViewLayoutBinding
-import com.kickstarter.libs.BaseActivity
-import com.kickstarter.libs.qualifiers.RequiresActivityViewModel
-import com.kickstarter.libs.utils.TransitionUtils
-import com.kickstarter.viewmodels.WebViewViewModel
-import rx.android.schedulers.AndroidSchedulers
+import com.kickstarter.ui.IntentKey
+import com.kickstarter.ui.extensions.finishWithAnimation
 
-@RequiresActivityViewModel(WebViewViewModel.ViewModel::class)
-class WebViewActivity : BaseActivity<WebViewViewModel.ViewModel>() {
+class WebViewActivity : ComponentActivity() {
     private lateinit var binding: WebViewLayoutBinding
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding = WebViewLayoutBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
-        viewModel.outputs.toolbarTitle()
-            .compose(bindToLifecycle())
-            .observeOn(AndroidSchedulers.mainThread())
-            .subscribe { binding.webViewToolbar.webViewToolbar.setTitle(it) }
+        val toolbarTitle = intent.getStringExtra(IntentKey.TOOLBAR_TITLE)
+        toolbarTitle?.let { binding.webViewToolbar.webViewToolbar.setTitle(it) }
+        val url = intent.getStringExtra(IntentKey.URL)
+        url?.let { binding.webView.loadUrl(it) }
 
-        viewModel.outputs.url()
-            .compose(bindToLifecycle())
-            .observeOn(AndroidSchedulers.mainThread())
-            .subscribe { binding.webView.loadUrl(it) }
-    }
-
-    override fun back() {
-        // This logic is sound only for web view activities without RequestHandlers.
-        // TODO: Refactor the client to update web history properly for activities with RequestHandlers.
-        if (binding.webView.canGoBack()) {
-            binding.webView.goBack()
-        } else {
-            super.back()
+        onBackPressedDispatcher.addCallback {
+            if (binding.webView.canGoBack()) {
+                binding.webView.goBack()
+            } else {
+                finishWithAnimation()
+            }
         }
     }
-
-    override fun exitTransition() = TransitionUtils.slideInFromLeft()
 }