Delete LayoutHelper.kt

app/src/main/java/chat/rocket/android/app/LayoutHelper.kt

-package chat.rocket.android.app
-
-import android.app.Activity
-import android.graphics.Rect
-import android.util.Log
-import android.view.View
-import android.view.ViewTreeObserver
-import android.widget.FrameLayout
-
-//TODO: check if this code has memory leak.
-class LayoutHelper {
-    private var childOfContent: View? = null
-    private var usableHeightPrevious: Int = 0
-    private var frameLayoutParams: FrameLayout.LayoutParams? = null
-
-    /**
-     * Workaround to adjust the layout when in the full screen mode.
-     *
-     * The original author of this code is Joseph Johnson and you can see his answer here: https://stackoverflow.com/a/19494006/4744263
-     *
-     * Note that this function has some differences from the original, like using *frameLayoutParams.height = usableHeightNow* instead of
-     * *frameLayoutParams.height = usableHeightSansKeyboard* (RobertoAllende's comment - from the same link above).
-     *
-     * @param activity The Activity to adjust the layout.
-     */
-    fun install(activity: Activity) {
-        try {
-            val content = activity.findViewById<View>(android.R.id.content) as FrameLayout
-            childOfContent = content.getChildAt(0)
-            childOfContent?.viewTreeObserver?.addOnGlobalLayoutListener(listener)
-            frameLayoutParams = childOfContent?.layoutParams as FrameLayout.LayoutParams
-        } catch (exception : ClassCastException) {
-            // TODO: are we using the android.util.Log for logging that type of errors? or should we use the SDK logger?
-            Log.e("ERROR", exception.message)
-        }
-    }
-
-    private val listener = ViewTreeObserver.OnGlobalLayoutListener {
-        resizeChildOfContent()
-    }
-
-    private fun resizeChildOfContent() {
-        val usableHeightNow = computeUsableHeight()
-        if (usableHeightNow != usableHeightPrevious) {
-            val usableHeightSansKeyboard = childOfContent?.rootView?.height ?: 0
-            val heightDifference = usableHeightSansKeyboard - usableHeightNow
-            if (heightDifference > usableHeightSansKeyboard / 4) {
-                // keyboard probably just became visible
-                frameLayoutParams?.height = usableHeightSansKeyboard - heightDifference
-            } else {
-                // keyboard probably just became hidden
-                frameLayoutParams?.height = usableHeightNow
-            }
-            childOfContent?.requestLayout()
-            usableHeightPrevious = usableHeightNow
-        }
-    }
-
-    private fun computeUsableHeight(): Int {
-        val rect = Rect()
-        childOfContent?.getWindowVisibleDisplayFrame(rect)
-        return rect.bottom - rect.top
-    }
-
-    fun remove() {
-        childOfContent?.viewTreeObserver?.removeOnGlobalLayoutListener(listener)
-        childOfContent = null
-        frameLayoutParams = null
-    }
-}
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