Implement CitationSnackbar class

app/src/main/java/chat/rocket/android/chatroom/ui/CitationSnackbar.kt

+package chat.rocket.android.chatroom.ui
+
+import android.graphics.drawable.Drawable
+import android.support.design.widget.BaseTransientBottomBar
+import android.support.v4.view.ViewCompat
+import android.text.Spannable
+import android.text.SpannableString
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import chat.rocket.android.R
+import chat.rocket.android.helper.MessageParser
+import chat.rocket.android.util.content
+import ru.noties.markwon.Markwon
+
+class CitationSnackbar : BaseTransientBottomBar<CitationSnackbar> {
+
+    companion object {
+        fun make(parentViewGroup: ViewGroup, content: String): CitationSnackbar {
+            val context = parentViewGroup.context
+            val view = LayoutInflater.from(context).inflate(R.layout.quote_bar, parentViewGroup, false)
+            val citationSnackbar = CitationSnackbar(parentViewGroup, view, CallbackImpl(view))
+            citationSnackbar.textView = view.findViewById(R.id.text_view_quote) as TextView
+            citationSnackbar.cancelView = view.findViewById(R.id.image_view_cancel_quote) as ImageView
+            citationSnackbar.duration = BaseTransientBottomBar.LENGTH_INDEFINITE
+            val spannable = SpannableString(content)
+            citationSnackbar.marginDrawable = context.getDrawable(R.drawable.quote)
+            spannable.setSpan(MessageParser.QuoteMarginSpan(citationSnackbar.marginDrawable, 10), 0, content.length, 0)
+            citationSnackbar.textView.content = spannable
+            return citationSnackbar
+        }
+    }
+
+    lateinit var cancelView: View
+    private lateinit var textView: TextView
+    private lateinit var marginDrawable: Drawable
+
+    var text: String = ""
+        set(value) {
+            val spannable = Markwon.markdown(this.context, value) as Spannable
+            spannable.setSpan(MessageParser.QuoteMarginSpan(marginDrawable, 10), 0, spannable.length, 0)
+            textView.content = spannable
+        }
+
+    override fun dismiss() {
+        super.dismiss()
+        text = ""
+    }
+
+    private constructor(parentViewGroup: ViewGroup, content: View, contentViewCallback: BaseTransientBottomBar.ContentViewCallback) :
+            super(parentViewGroup, content, contentViewCallback)
+
+    class CallbackImpl(val content: View) : BaseTransientBottomBar.ContentViewCallback {
+        override fun animateContentOut(delay: Int, duration: Int) {
+            ViewCompat.setScaleY(content, 1f)
+            ViewCompat.animate(content)
+                    .scaleY(0f)
+                    .setDuration(duration.toLong())
+                    .setStartDelay(delay.toLong())
+        }
+
+        override fun animateContentIn(delay: Int, duration: Int) {
+            ViewCompat.setScaleY(content, 0f)
+            ViewCompat.animate(content)
+                    .scaleY(1f).setDuration(duration.toLong())
+                    .setStartDelay(delay.toLong())
+        }
+    }
+}
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