Create BottomSheetDialog and related stuff

OsmAnd-telegram/res/anim/slide_in_bottom.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+	<translate
+		android:duration="@android:integer/config_mediumAnimTime"
+		android:fromYDelta="100%p"
+		android:toYDelta="0"/>
+	<alpha
+		android:duration="@android:integer/config_mediumAnimTime"
+		android:fromAlpha="0.0"
+		android:toAlpha="1.0"/>
+</set>

OsmAnd-telegram/res/anim/slide_out_bottom.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+	<translate
+		android:duration="@android:integer/config_mediumAnimTime"
+		android:fromYDelta="0"
+		android:toYDelta="100%p"/>
+	<alpha
+		android:duration="@android:integer/config_mediumAnimTime"
+		android:fromAlpha="1.0"
+		android:toAlpha="0.0"/>
+</set>

OsmAnd-telegram/res/layout/bottom_sheet_dialog.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.design.widget.CoordinatorLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent"
+	android:fitsSystemWindows="true">
+
+	<View
+		android:id="@+id/touch_outside"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent"/>
+
+	<FrameLayout
+		android:id="@+id/content_container"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:layout_gravity="center_horizontal|bottom"/>
+
+</android.support.design.widget.CoordinatorLayout>

OsmAnd-telegram/res/values/styles.xml

@@ -73,4 +73,13 @@
 		<item name="android:background">@drawable/btn_round</item>
 	</style>
 
+	<style name="Animations"/>
+
+	<style name="Animations.PopUpMenu"/>
+
+	<style name="Animations.PopUpMenu.Bottom">
+		<item name="android:windowEnterAnimation">@anim/slide_in_bottom</item>
+		<item name="android:windowExitAnimation">@anim/slide_out_bottom</item>
+	</style>
+
 </resources>

OsmAnd-telegram/src/net/osmand/telegram/ui/views/BottomSheetDialog.kt

@@ -0,0 +1,70 @@
+package net.osmand.telegram.ui.views
+
+import android.app.Dialog
+import android.content.Context
+import android.os.Build
+import android.os.Bundle
+import android.view.View
+import android.view.ViewGroup
+import android.view.Window
+import android.view.WindowManager
+import net.osmand.telegram.R
+
+class BottomSheetDialog(ctx: Context, themeId: Int) : Dialog(ctx, themeId) {
+
+	init {
+		requestWindowFeature(Window.FEATURE_NO_TITLE)
+	}
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+		window?.apply {
+			if (Build.VERSION.SDK_INT >= 21) {
+				clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
+				addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
+			}
+			setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
+			attributes?.windowAnimations = R.style.Animations_PopUpMenu_Bottom
+		}
+	}
+
+	override fun setContentView(layoutResID: Int) {
+		super.setContentView(wrapInContainer(layoutResID, null, null))
+	}
+
+	override fun setContentView(view: View?) {
+		super.setContentView(wrapInContainer(0, view, null))
+	}
+
+	override fun setContentView(view: View?, params: ViewGroup.LayoutParams?) {
+		super.setContentView(wrapInContainer(0, view, params))
+	}
+
+	private fun wrapInContainer(
+		layoutResId: Int,
+		view: View?,
+		params: ViewGroup.LayoutParams?
+	): View {
+		val res = View.inflate(context, R.layout.bottom_sheet_dialog, null)
+		val container = res.findViewById<ViewGroup>(R.id.content_container)
+		var v = view
+
+		if (layoutResId != 0 && v == null) {
+			v = layoutInflater.inflate(layoutResId, container, false)
+		}
+		if (params == null) {
+			container.addView(v)
+		} else {
+			container.addView(v, params)
+		}
+
+		res.findViewById<View>(R.id.touch_outside).setOnClickListener {
+			cancel()
+		}
+
+		// Consume the event and prevent it from falling through
+		container.setOnTouchListener { _, _ -> return@setOnTouchListener true }
+
+		return res
+	}
+}