Use alpha to identity weak tags

app/src/main/java/com/hippo/ehviewer/client/data/GalleryTagGroup.kt

@@ -23,16 +23,4 @@ class GalleryTagGroup(
     private val mTagList: ArrayList<String> = arrayListOf(),
     @JvmField
     var groupName: String? = null
-) : Parcelable {
-    fun addTag(tag: String) {
-        mTagList.add(tag)
-    }
-
-    fun size(): Int {
-        return mTagList.size
-    }
-
-    fun getTagAt(position: Int): String {
-        return mTagList[position]
-    }
-}
+) : Parcelable, MutableList<String> by mTagList

app/src/main/java/com/hippo/ehviewer/client/parser/GalleryDetailParser.kt

@@ -292,9 +292,12 @@ object GalleryDetailParser {
                 if (index >= 0) {
                     tag = tag.substring(0, index).trim()
                 }
-                group.addTag(tag)
+                if (it.className() == "gtw") {
+                    tag = "_$tag"   // weak tag
+                }
+                group.add(tag)
             }
-            if (group.size() > 0) group else null
+            if (group.size > 0) group else null
         } catch (e: Throwable) {
             ExceptionUtils.throwIfFatal(e)
             e.printStackTrace()

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryDetailScene.kt

@@ -648,12 +648,15 @@ class GalleryDetailScene : CollapsingToolbarScene(), View.OnClickListener, Downl
                 ViewGroup.LayoutParams.WRAP_CONTENT,
                 ViewGroup.LayoutParams.WRAP_CONTENT
             )
-            var j = 0
-            val z = tg.size()
-            while (j < z) {
+            tg.forEach {
                 val tag = inflater.inflate(R.layout.item_gallery_tag, awl, false) as TextView
                 awl.addView(tag)
-                val tagStr = tg.getTagAt(j)
+                val tagStr = if (it.startsWith('_')) {
+                    tag.alpha = 0.5f
+                    it.substring(1)
+                } else {
+                    it
+                }
                 var readableTag: String? = null
                 if (ehTags != null && ehTags.isInitialized()) {
                     readableTag = ehTags.getTranslation(prefix, tagStr)
@@ -663,7 +666,6 @@ class GalleryDetailScene : CollapsingToolbarScene(), View.OnClickListener, Downl
                 tag.setTag(R.id.tag, tg.groupName + ":" + tagStr)
                 tag.setOnClickListener(this)
                 tag.setOnLongClickListener(this)
-                j++
             }
         }
     }
@@ -1749,8 +1751,8 @@ class GalleryDetailScene : CollapsingToolbarScene(), View.OnClickListener, Downl
                 return null
             }
             for (tagGroup in tagGroups) {
-                if ("artist" == tagGroup.groupName && tagGroup.size() > 0) {
-                    return tagGroup.getTagAt(0)
+                if ("artist" == tagGroup.groupName && tagGroup.size > 0) {
+                    return tagGroup[0].removePrefix("_")
                 }
             }
             return null