add possibility to change profile fields, refactor (#751)

* refactor EditProfileActivity, add profile fields

* preserve transparency when cropping profile images

* dont validate profile fields on client side

* revert unintentional change in card_frame_dark.xml

* improve activity_edit_profile layout for tablets

* Revert "improve activity_edit_profile layout for tablets"

This reverts commit 20ff3d167c39b15566e017108b33fe58690a8482.

* improve activity_edit_profile layout for tablets

* fix bug in EditProfileActivity, add snackbar

* improve EditProfileActivity code

* use events instead of shared prefs to communicate profile update

app/src/main/java/com/keylesspalace/tusky/adapter/AccountFieldEditAdapter.kt

@@ -0,0 +1,98 @@
+/* Copyright 2018 Conny Duck
+ *
+ * This file is a part of Tusky.
+ *
+ * This program is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
+ * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with Tusky; if not,
+ * see <http://www.gnu.org/licenses>. */
+
+package com.keylesspalace.tusky.adapter
+
+import android.support.v7.widget.RecyclerView
+import android.text.Editable
+import android.text.TextWatcher
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.EditText
+import com.keylesspalace.tusky.R
+import com.keylesspalace.tusky.entity.StringField
+import kotlinx.android.synthetic.main.item_edit_field.view.*
+
+class AccountFieldEditAdapter : RecyclerView.Adapter<AccountFieldEditAdapter.ViewHolder>() {
+
+    private val fieldData = mutableListOf<MutableStringPair>()
+
+    fun setFields(fields: List<StringField>) {
+        fieldData.clear()
+
+        fields.forEach { field ->
+            fieldData.add(MutableStringPair(field.name, field.value))
+        }
+        if(fieldData.isEmpty()) {
+            fieldData.add(MutableStringPair("", ""))
+        }
+
+        notifyDataSetChanged()
+    }
+
+    fun getFieldData(): List<StringField> {
+        return fieldData.map {
+            StringField(it.first, it.second)
+        }
+    }
+
+    fun addField() {
+        fieldData.add(MutableStringPair("", ""))
+        notifyItemInserted(fieldData.size - 1)
+    }
+
+    override fun getItemCount(): Int = fieldData.size
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AccountFieldEditAdapter.ViewHolder {
+        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_edit_field, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(viewHolder: AccountFieldEditAdapter.ViewHolder, position: Int) {
+        viewHolder.nameTextView.setText(fieldData[position].first)
+        viewHolder.valueTextView.setText(fieldData[position].second)
+
+        viewHolder.nameTextView.addTextChangedListener(object: TextWatcher {
+            override fun afterTextChanged(newText: Editable) {
+                fieldData[viewHolder.adapterPosition].first = newText.toString()
+            }
+
+            override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {}
+
+            override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {}
+        })
+
+        viewHolder.valueTextView.addTextChangedListener(object: TextWatcher {
+            override fun afterTextChanged(newText: Editable) {
+                fieldData[viewHolder.adapterPosition].second = newText.toString()
+            }
+
+            override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {}
+
+            override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {}
+        })
+
+    }
+
+    class ViewHolder(rootView: View) : RecyclerView.ViewHolder(rootView) {
+        val nameTextView: EditText = rootView.accountFieldName
+        val valueTextView: EditText = rootView.accountFieldValue
+    }
+
+    class MutableStringPair (var first: String, var second: String)
+
+
+}