Payload processing refactoring

build.gradle

@@ -12,6 +12,7 @@ buildscript {
         lifecycleVersion = '2.2.0'
         androidXCoreVersion = '2.1.0'
         paletteKtxVersion = '1.0.0'
+        recyclerViewVersion = '1.2.0-alpha04'
 
         // Publishing
         androidMavenGradleVersion = '2.1'

library/build.gradle

@@ -73,6 +73,7 @@ dependencies {
     implementation "com.google.android.material:material:$materialComponentsVersion"
     implementation "androidx.constraintlayout:constraintlayout:$constraintLayoutVersion"
     implementation "androidx.palette:palette-ktx:$paletteKtxVersion"
+    implementation "androidx.recyclerview:recyclerview:$recyclerViewVersion"
 
     implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycleVersion"
     implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycleVersion"

library/src/main/java/com/chuckerteam/chucker/internal/support/SearchHighlightUtil.kt → library/src/main/java/com/chuckerteam/chucker/internal/support/SpanUtils.kt

@@ -1,9 +1,12 @@
 package com.chuckerteam.chucker.internal.support
 
+import android.graphics.Typeface
+import android.text.SpannableString
 import android.text.SpannableStringBuilder
 import android.text.Spanned
 import android.text.style.BackgroundColorSpan
 import android.text.style.ForegroundColorSpan
+import android.text.style.StyleSpan
 import android.text.style.UnderlineSpan
 
 /**
@@ -60,3 +63,7 @@ private fun applyColoredSpannable(
             builder
         }
 }
+
+fun CharSequence.applyBoldSpan() = SpannableString(this).apply {
+    setSpan(StyleSpan(Typeface.BOLD), 0, this.length, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+}

library/src/main/java/com/chuckerteam/chucker/internal/ui/transaction/TransactionBodyAdapter.kt

@@ -0,0 +1,39 @@
+package com.chuckerteam.chucker.internal.ui.transaction
+
+import android.text.SpannableStringBuilder
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.chuckerteam.chucker.databinding.ChuckerTransactionItemBodyLineBinding
+
+internal class TransactionBodyAdapter : RecyclerView.Adapter<TransactionBodyAdapter.BodyLineViewHolder>() {
+
+    private val items = arrayListOf<SpannableStringBuilder>()
+
+    fun setItems(headersItems: List<SpannableStringBuilder>) {
+        items.clear()
+        items.addAll(headersItems)
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BodyLineViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val bodyItemBinding = ChuckerTransactionItemBodyLineBinding.inflate(inflater, parent, false)
+        return BodyLineViewHolder(bodyItemBinding)
+    }
+
+    override fun getItemCount(): Int = items.size
+
+    override fun onBindViewHolder(holder: BodyLineViewHolder, position: Int) {
+        holder.bind(items[position])
+    }
+
+    internal class BodyLineViewHolder(
+        private val bodyBinding: ChuckerTransactionItemBodyLineBinding
+    ) : RecyclerView.ViewHolder(bodyBinding.root) {
+
+        fun bind(item: SpannableStringBuilder) {
+            bodyBinding.bodyLine.text = item
+        }
+    }
+}

library/src/main/java/com/chuckerteam/chucker/internal/ui/transaction/TransactionHeadersAdapter.kt

@@ -0,0 +1,43 @@
+package com.chuckerteam.chucker.internal.ui.transaction
+
+import android.text.SpannableStringBuilder
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.chuckerteam.chucker.databinding.ChuckerTransactionItemHeadersBinding
+import com.chuckerteam.chucker.internal.data.entity.HttpHeader
+import com.chuckerteam.chucker.internal.support.applyBoldSpan
+
+internal class TransactionHeadersAdapter : RecyclerView.Adapter<TransactionHeadersAdapter.HeaderViewHolder>() {
+
+    private val headers = arrayListOf<HttpHeader>()
+
+    fun setItems(headersItems: List<HttpHeader>) {
+        headers.clear()
+        headers.addAll(headersItems)
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): HeaderViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val headersItemBinding = ChuckerTransactionItemHeadersBinding.inflate(inflater, parent, false)
+        return HeaderViewHolder(headersItemBinding)
+    }
+
+    override fun getItemCount(): Int = headers.size
+
+    override fun onBindViewHolder(holder: HeaderViewHolder, position: Int) {
+        holder.bind(headers[position])
+    }
+
+    internal class HeaderViewHolder(
+        private val headerBinding: ChuckerTransactionItemHeadersBinding
+    ) : RecyclerView.ViewHolder(headerBinding.root) {
+
+        fun bind(headerItem: HttpHeader) {
+            val headerName = "${headerItem.name}: ".applyBoldSpan()
+            val headerValue = headerItem.value
+            headerBinding.responseHeaders.text = SpannableStringBuilder(headerName).append(headerValue)
+        }
+    }
+}

library/src/main/java/com/chuckerteam/chucker/internal/ui/transaction/TransactionImageAdapter.kt

@@ -0,0 +1,68 @@
+package com.chuckerteam.chucker.internal.ui.transaction
+
+import android.graphics.Bitmap
+import android.graphics.drawable.Drawable
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.chuckerteam.chucker.R
+import com.chuckerteam.chucker.databinding.ChuckerTransactionItemImageBinding
+import com.chuckerteam.chucker.internal.support.ChessboardDrawable
+
+internal class TransactionImageAdapter : RecyclerView.Adapter<TransactionImageAdapter.ImageViewHolder>() {
+
+    private lateinit var image: Bitmap
+    private var luminance: Double? = null
+
+    fun setImageItem(image: Bitmap, luminance: Double?) {
+        this.image = image
+        this.luminance = luminance
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ImageViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val itemBinding = ChuckerTransactionItemImageBinding.inflate(inflater, parent, false)
+        return ImageViewHolder(itemBinding)
+    }
+
+    override fun getItemCount(): Int = if (!this::image.isInitialized) 0 else 1
+
+    override fun onBindViewHolder(holder: ImageViewHolder, position: Int) {
+        holder.bind(image, luminance)
+    }
+
+    internal class ImageViewHolder(
+        private val imageBinding: ChuckerTransactionItemImageBinding
+    ) : RecyclerView.ViewHolder(imageBinding.root) {
+
+        fun bind(item: Bitmap, luminance: Double?) {
+            imageBinding.binaryData.setImageBitmap(item)
+            imageBinding.root.background = createContrastingBackground(luminance)
+        }
+
+        private fun createContrastingBackground(luminance: Double?): Drawable? {
+            if (luminance == null) return null
+
+            return if (luminance < LUMINANCE_THRESHOLD) {
+                ChessboardDrawable.createPattern(
+                    itemView.context,
+                    R.color.chucker_chessboard_even_square_light,
+                    R.color.chucker_chessboard_odd_square_light,
+                    R.dimen.chucker_half_grid
+                )
+            } else {
+                ChessboardDrawable.createPattern(
+                    itemView.context,
+                    R.color.chucker_chessboard_even_square_dark,
+                    R.color.chucker_chessboard_odd_square_dark,
+                    R.dimen.chucker_half_grid
+                )
+            }
+        }
+
+        private companion object {
+            const val LUMINANCE_THRESHOLD = 0.25
+        }
+    }
+}

library/src/main/java/com/chuckerteam/chucker/internal/ui/transaction/TransactionPayloadAdapter.kt

@@ -20,7 +20,7 @@ import com.chuckerteam.chucker.internal.support.highlightWithDefinedColors
  * We're using a [RecyclerView] to show the content of the body line by line to do not affect
  * performances when loading big payloads.
  */
-internal class TransactionBodyAdapter : RecyclerView.Adapter<TransactionPayloadViewHolder>() {
+internal class TransactionPayloadAdapter : RecyclerView.Adapter<TransactionPayloadViewHolder>() {
 
     private val items = arrayListOf<TransactionPayloadItem>()
 

library/src/main/java/com/chuckerteam/chucker/internal/ui/transaction/TransactionPayloadFragment.kt

@@ -22,6 +22,7 @@ import androidx.core.text.HtmlCompat
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
+import androidx.recyclerview.widget.ConcatAdapter
 import com.chuckerteam.chucker.R
 import com.chuckerteam.chucker.databinding.ChuckerFragmentTransactionPayloadBinding
 import com.chuckerteam.chucker.internal.data.entity.HttpTransaction
@@ -42,7 +43,19 @@ internal class TransactionPayloadFragment :
     Fragment(), SearchView.OnQueryTextListener {
 
     private lateinit var payloadBinding: ChuckerFragmentTransactionPayloadBinding
-    private val payloadAdapter = TransactionBodyAdapter()
+
+    private val payloadAdapter = TransactionPayloadAdapter()
+
+    private val headerAdapter by lazy { TransactionHeadersAdapter() }
+    private val bodyAdapter by lazy { TransactionBodyAdapter() }
+    private val imageAdapter by lazy { TransactionImageAdapter() }
+
+    private val newPayloadAdapter = ConcatAdapter(
+        payloadAdapter,
+        headerAdapter,
+        bodyAdapter,
+        imageAdapter
+    )
 
     private var backgroundSpanColor: Int = Color.YELLOW
     private var foregroundSpanColor: Int = Color.RED
@@ -77,7 +90,7 @@ internal class TransactionPayloadFragment :
 
         payloadBinding.payloadRecyclerView.apply {
             setHasFixedSize(true)
-            adapter = payloadAdapter
+            adapter = newPayloadAdapter
         }
 
         viewModel.transaction