feat(home): 사업자 정보 inline 더보기를 추가한다

app/src/main/java/kr/co/vividnext/sodalive/v2/main/HomeMainFragment.kt

@@ -30,6 +30,7 @@ import kr.co.vividnext.sodalive.v2.main.home.model.RecommendedActivityType
 import kr.co.vividnext.sodalive.v2.main.home.model.visibleHomeGenreCreatorGroups
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeAiCharacterAdapter
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeBannerBinder
+import kr.co.vividnext.sodalive.v2.main.home.ui.HomeBusinessInfoBinder
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeCheerCreatorAdapter
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeFirstAudioAdapter
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeGenreCreatorAdapter
@@ -69,9 +70,29 @@ class HomeMainFragment : BaseFragment<FragmentV2MainHomeBinding>(
         binding.textTabBarHome.root.setOnTabSelectedListener { }
         setUpSectionTitles()
         setUpRecommendationAdapters()
+        setUpBusinessInfo()
         bindHomeRecommendationContent(phase6SampleContent())
     }
 
+    private fun setUpBusinessInfo() {
+        val businessInfoText = binding.tvHomeBusinessInfo.text
+        HomeBusinessInfoBinder.bind(binding.tvHomeBusinessInfo)
+        binding.tvHomeBusinessInfo.post {
+            binding.tvHomeBusinessInfo.maxLines = Int.MAX_VALUE
+            binding.tvHomeBusinessInfo.ellipsize = null
+            binding.tvHomeBusinessInfo.text = businessInfoText
+            binding.tvHomeBusinessInfo.post {
+                val totalLines = binding.tvHomeBusinessInfo.layout?.lineCount
+                    ?: binding.tvHomeBusinessInfo.lineCount
+                HomeBusinessInfoBinder.updateToggleVisibility(
+                    textView = binding.tvHomeBusinessInfo,
+                    originalText = businessInfoText,
+                    totalLineCount = totalLines
+                )
+            }
+        }
+    }
+
     private fun setUpRecommendationAdapters() {
         bannerBinder = HomeBannerBinder(binding.rvHomeBanners)
         binding.rvHomeLives.adapter = liveAdapter

app/src/main/java/kr/co/vividnext/sodalive/v2/main/home/ui/HomeBusinessInfoBinder.kt

@@ -0,0 +1,120 @@
+package kr.co.vividnext.sodalive.v2.main.home.ui
+
+import android.graphics.Color
+import android.text.SpannableString
+import android.text.Spanned
+import android.text.StaticLayout
+import android.text.TextPaint
+import android.text.TextUtils
+import android.text.method.LinkMovementMethod
+import android.text.style.ClickableSpan
+import android.view.View
+import android.widget.TextView
+import kr.co.vividnext.sodalive.R
+
+object HomeBusinessInfoBinder {
+    private const val COLLAPSED_MAX_LINES = 3
+    private const val ELLIPSIS = "…  "
+    private const val ACTION_SPACING = "  "
+
+    fun bind(textView: TextView) {
+        textView.movementMethod = LinkMovementMethod.getInstance()
+        textView.highlightColor = Color.TRANSPARENT
+    }
+
+    fun updateToggleVisibility(
+        textView: TextView,
+        originalText: CharSequence,
+        totalLineCount: Int
+    ) {
+        if (totalLineCount > COLLAPSED_MAX_LINES) {
+            applyCollapsed(textView, originalText)
+        } else {
+            textView.maxLines = COLLAPSED_MAX_LINES
+            textView.ellipsize = TextUtils.TruncateAt.END
+            textView.text = originalText
+        }
+    }
+
+    private fun applyExpanded(
+        textView: TextView,
+        originalText: CharSequence
+    ) {
+        textView.maxLines = Int.MAX_VALUE
+        textView.ellipsize = null
+        textView.text = originalText.withAction(
+            actionText = textView.context.getString(R.string.home_recommendation_collapse),
+            actionSpacing = ACTION_SPACING,
+            onClick = { applyCollapsed(textView, originalText) }
+        )
+    }
+
+    private fun applyCollapsed(
+        textView: TextView,
+        originalText: CharSequence
+    ) {
+        textView.maxLines = COLLAPSED_MAX_LINES
+        textView.ellipsize = null
+        val actionText = textView.context.getString(R.string.home_recommendation_more)
+        val collapsedText = originalText.truncateForInlineAction(textView, actionText)
+        textView.text = collapsedText.withAction(
+            actionText = actionText,
+            actionSpacing = "",
+            onClick = { applyExpanded(textView, originalText) }
+        )
+    }
+
+    private fun CharSequence.truncateForInlineAction(
+        textView: TextView,
+        actionText: String
+    ): CharSequence {
+        val suffix = ELLIPSIS + actionText
+        val availableWidth = textView.width - textView.paddingLeft - textView.paddingRight
+        if (availableWidth <= 0) return this
+
+        var endIndex = length
+        while (endIndex > 0) {
+            val candidate = take(endIndex).trimEnd().toString() + suffix
+            if (candidate.lineCount(textView, availableWidth) <= COLLAPSED_MAX_LINES) {
+                return take(endIndex).trimEnd().toString() + ELLIPSIS
+            }
+            endIndex -= 1
+        }
+        return ELLIPSIS
+    }
+
+    private fun CharSequence.withAction(
+        actionText: String,
+        actionSpacing: String,
+        onClick: () -> Unit
+    ): SpannableString {
+        val textWithAction = "$this$actionSpacing$actionText"
+        return SpannableString(textWithAction).apply {
+            setSpan(
+                object : ClickableSpan() {
+                    override fun onClick(widget: View) = onClick()
+
+                    override fun updateDrawState(ds: TextPaint) {
+                        super.updateDrawState(ds)
+                        ds.isUnderlineText = false
+                    }
+                },
+                textWithAction.length - actionText.length,
+                textWithAction.length,
+                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
+            )
+        }
+    }
+
+    private fun CharSequence.lineCount(
+        textView: TextView,
+        availableWidth: Int
+    ): Int {
+        return StaticLayout.Builder
+            .obtain(this, 0, length, textView.paint, availableWidth)
+            .setLineSpacing(textView.lineSpacingExtra, textView.lineSpacingMultiplier)
+            .setIncludePad(textView.includeFontPadding)
+            .build()
+            .lineCount
+    }
+}

app/src/main/res/layout/fragment_v2_main_home.xml

@@ -228,10 +228,12 @@
 
                 <TextView
                     android:id="@+id/tv_home_business_info"
-                    style="@style/Typography.Body2"
+                    style="@style/Typography.Body6"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:text="@string/home_recommendation_business_info"
+                    android:ellipsize="end"
+                    android:maxLines="3"
+                    android:text="@string/company_info"
                     android:textColor="@color/gray_500" />
             </LinearLayout>
         </LinearLayout>

app/src/test/java/kr/co/vividnext/sodalive/v2/main/home/HomeMainFragmentLayoutTest.kt

@@ -4,6 +4,9 @@ import android.app.Application
 import android.content.Context
 import android.content.res.Configuration
 import android.graphics.drawable.ColorDrawable
+import android.text.Spanned
+import android.text.TextUtils
+import android.text.style.ClickableSpan
 import android.view.Gravity
 import android.view.LayoutInflater
 import android.view.View
@@ -30,6 +33,7 @@ import kr.co.vividnext.sodalive.v2.main.home.model.visibleHomePopularCommunityPo
 import kr.co.vividnext.sodalive.v2.main.home.model.visibleHomeGenreCreatorGroups
 import kr.co.vividnext.sodalive.v2.main.home.data.HomePopularCommunityPostItem
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeAiCharacterAdapter
+import kr.co.vividnext.sodalive.v2.main.home.ui.HomeBusinessInfoBinder
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeCheerCreatorAdapter
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeFirstAudioAdapter
 import kr.co.vividnext.sodalive.v2.main.home.ui.HomeFollowAllButtonBinder
@@ -819,6 +823,88 @@ class HomeMainFragmentLayoutTest {
         assertNotNull(genreGroup.findViewById<TextView>(R.id.tv_home_genre_creator_group_title_suffix))
     }
 
+    @Test
+    fun `business info layout starts collapsed without separate toggle view`() {
+        val root = inflateView(R.layout.fragment_v2_main_home)
+        val businessInfoContainer = root.findViewById<LinearLayout>(R.id.ll_home_business_info)
+        val businessInfo = root.findViewById<TextView>(R.id.tv_home_business_info)
+
+        assertEquals(1, businessInfoContainer.childCount)
+        assertEquals(3, businessInfo.maxLines)
+        assertEquals(TextUtils.TruncateAt.END, businessInfo.ellipsize)
+    }
+
+    @Test
+    fun `business info binder appends inline more action when content is longer than three lines`() {
+        val context = ApplicationProvider.getApplicationContext<Context>()
+        val businessInfo = TextView(context).apply {
+            setPadding(0, 0, 0, 0)
+            layout(0, 0, 180.dpToPx(), 1000.dpToPx())
+        }
+        val originalText = "사업자 정보가 여러 줄로 길게 표시되어 마지막 줄 우측에 더보기 액션이 붙어야 합니다. 반복 텍스트입니다."
+
+        HomeBusinessInfoBinder.bind(businessInfo)
+        HomeBusinessInfoBinder.updateToggleVisibility(
+            textView = businessInfo,
+            originalText = originalText,
+            totalLineCount = 4
+        )
+
+        assertEquals(3, businessInfo.maxLines)
+        assertEquals(null, businessInfo.ellipsize)
+        assertFalse(
+            businessInfo.text.toString().contains("\n" + context.getString(R.string.home_recommendation_more))
+        )
+        assertEquals(true, businessInfo.text.toString().endsWith("…  " + context.getString(R.string.home_recommendation_more)))
+        assertEquals(1, businessInfo.clickableSpanCount())
+    }
+
+    @Test
+    fun `business info inline action toggles collapsed and expanded state`() {
+        val context = ApplicationProvider.getApplicationContext<Context>()
+        val businessInfo = TextView(context).apply {
+            setPadding(0, 0, 0, 0)
+            layout(0, 0, 180.dpToPx(), 1000.dpToPx())
+        }
+        val originalText = "사업자 정보가 여러 줄로 길게 표시되어 마지막 줄 우측에 더보기 액션이 붙어야 합니다. 반복 텍스트입니다."
+
+        HomeBusinessInfoBinder.bind(businessInfo)
+        HomeBusinessInfoBinder.updateToggleVisibility(
+            textView = businessInfo,
+            originalText = originalText,
+            totalLineCount = 4
+        )
+        businessInfo.performLastClickableSpanClick()
+
+        assertEquals(Int.MAX_VALUE, businessInfo.maxLines)
+        assertEquals(null, businessInfo.ellipsize)
+        assertEquals(true, businessInfo.text.toString().endsWith("  " + context.getString(R.string.home_recommendation_collapse)))
+
+        businessInfo.performLastClickableSpanClick()
+
+        assertEquals(3, businessInfo.maxLines)
+        assertEquals(null, businessInfo.ellipsize)
+        assertEquals(true, businessInfo.text.toString().endsWith("…  " + context.getString(R.string.home_recommendation_more)))
+    }
+
+    @Test
+    fun `business info inline action is absent when content is three lines or fewer`() {
+        val context = ApplicationProvider.getApplicationContext<Context>()
+        val businessInfo = TextView(context)
+        val originalText = "짧은 사업자 정보"
+
+        HomeBusinessInfoBinder.updateToggleVisibility(
+            textView = businessInfo,
+            originalText = originalText,
+            totalLineCount = 3
+        )
+
+        assertEquals(3, businessInfo.maxLines)
+        assertEquals(TextUtils.TruncateAt.END, businessInfo.ellipsize)
+        assertEquals(originalText, businessInfo.text.toString())
+        assertEquals(0, businessInfo.clickableSpanCount())
+    }
+
     @Test
     fun `home title bar exposes right icons in cash search bell order`() {
         val titleBar = inflateView(R.layout.view_title_bar_home)
@@ -841,6 +927,16 @@ class HomeMainFragmentLayoutTest {
         }
     }
 
+    private fun TextView.clickableSpanCount(): Int {
+        val spanned = text as? Spanned ?: return 0
+        return spanned.getSpans(0, spanned.length, ClickableSpan::class.java).size
+    }
+
+    private fun TextView.performLastClickableSpanClick() {
+        val spanned = text as Spanned
+        spanned.getSpans(0, spanned.length, ClickableSpan::class.java).last().onClick(this)
+    }
+
     private fun inflateView(layoutResId: Int): View {
         val context = ApplicationProvider.getApplicationContext<Context>()
         return LayoutInflater.from(context).inflate(layoutResId, null, false)