Rewrite PasswordFragment in Kotlin

Signed-off-by: Harsh Shandilya <msfjarvis@gmail.com>

1 files changed, 206 insertions, 0 deletions

diff --git a/app/src/main/java/com/zeapo/pwdstore/PasswordFragment.kt b/app/src/main/java/com/zeapo/pwdstore/PasswordFragment.kt
new file mode 100644
index 00000000..d41d9286
--- /dev/null
+++ b/app/src/main/java/com/zeapo/pwdstore/PasswordFragment.kt
@@ -0,0 +1,206 @@
+/*
+ * Copyright © 2014-2019 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+package com.zeapo.pwdstore
+
+import android.content.Context
+import android.content.SharedPreferences
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import androidx.preference.PreferenceManager
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.floatingactionbutton.FloatingActionButton
+import com.zeapo.pwdstore.ui.adapters.PasswordRecyclerAdapter
+import com.zeapo.pwdstore.utils.PasswordItem
+import com.zeapo.pwdstore.utils.PasswordRepository
+import com.zeapo.pwdstore.utils.PasswordRepository.Companion.getPasswords
+import com.zeapo.pwdstore.utils.PasswordRepository.Companion.getRepositoryDirectory
+import com.zeapo.pwdstore.utils.PasswordRepository.PasswordSortOrder.Companion.getSortOrder
+import java.io.File
+import java.util.Locale
+import java.util.Stack
+
+/**
+ * A fragment representing a list of Items.
+ *
+ *
+ * Large screen devices (such as tablets) are supported by replacing the ListView with a
+ * GridView.
+ *
+ *
+ *
+ */
+class PasswordFragment
+/**
+ * Mandatory empty constructor for the fragment manager to instantiate the fragment (e.g. upon
+ * screen orientation changes).
+ */
+    : Fragment() {
+    // store the pass files list in a stack
+    private var passListStack: Stack<ArrayList<PasswordItem>> = Stack()
+    private var pathStack: Stack<File> = Stack()
+    private var scrollPosition: Stack<Int> = Stack()
+    private lateinit var recyclerAdapter: PasswordRecyclerAdapter
+    private lateinit var recyclerView: RecyclerView
+    private lateinit var listener: OnFragmentInteractionListener
+    private lateinit var settings: SharedPreferences
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val path = requireNotNull(requireArguments().getString("Path"))
+        settings = PreferenceManager.getDefaultSharedPreferences(requireActivity())
+        recyclerAdapter = PasswordRecyclerAdapter((requireActivity() as PasswordStore),
+                listener, getPasswords(File(path), getRepositoryDirectory(requireContext()), sortOrder))
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        val view = inflater.inflate(R.layout.password_recycler_view, container, false)
+        // use a linear layout manager
+        val layoutManager = LinearLayoutManager(requireContext())
+        recyclerView = view.findViewById(R.id.pass_recycler)
+        recyclerView.layoutManager = layoutManager
+        // use divider
+        recyclerView.addItemDecoration(DividerItemDecoration(requireContext(), DividerItemDecoration.VERTICAL))
+        // Set the adapter
+        recyclerView.adapter = recyclerAdapter
+        val fab: FloatingActionButton = view.findViewById(R.id.fab)
+        fab.setOnClickListener { (requireActivity() as PasswordStore).createPassword() }
+        registerForContextMenu(recyclerView)
+        return view
+    }
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        try {
+            listener = object : OnFragmentInteractionListener {
+                override fun onFragmentInteraction(item: PasswordItem) {
+                    if (item.type == PasswordItem.TYPE_CATEGORY) { // push the current password list (non filtered plz!)
+                        passListStack.push(
+                                if (pathStack.isEmpty())
+                                    getPasswords(getRepositoryDirectory(context), sortOrder)
+                                else
+                                    getPasswords(pathStack.peek(), getRepositoryDirectory(context), sortOrder)
+                        )
+                        // push the category were we're going
+                        pathStack.push(item.file)
+                        scrollPosition.push(recyclerView.verticalScrollbarPosition)
+                        recyclerView.scrollToPosition(0)
+                        recyclerAdapter.clear()
+                        recyclerAdapter.addAll(getPasswords(item.file, getRepositoryDirectory(context), sortOrder))
+                        (requireActivity() as AppCompatActivity).supportActionBar?.setDisplayHomeAsUpEnabled(true)
+                    } else {
+                        if (requireArguments().getBoolean("matchWith", false)) {
+                            (requireActivity() as PasswordStore).matchPasswordWithApp(item)
+                        } else {
+                            (requireActivity() as PasswordStore).decryptPassword(item)
+                        }
+                    }
+                }
+            }
+        } catch (e: ClassCastException) {
+            throw ClassCastException("$context must implement OnFragmentInteractionListener")
+        }
+    }
+
+    /** clears the adapter content and sets it back to the root view  */
+    fun updateAdapter() {
+        passListStack.clear()
+        pathStack.clear()
+        scrollPosition.clear()
+        recyclerAdapter.clear()
+        recyclerAdapter.addAll(getPasswords(getRepositoryDirectory(requireContext()), sortOrder))
+        (requireActivity() as AppCompatActivity).supportActionBar?.setDisplayHomeAsUpEnabled(false)
+    }
+
+    /** refreshes the adapter with the latest opened category  */
+    fun refreshAdapter() {
+        recyclerAdapter.clear()
+        recyclerAdapter.addAll(
+                if (pathStack.isEmpty())
+                    getPasswords(getRepositoryDirectory(requireContext()), sortOrder)
+                else
+                    getPasswords(pathStack.peek(), getRepositoryDirectory(requireContext()), sortOrder)
+        )
+    }
+
+    /**
+     * filters the list adapter
+     *
+     * @param filter the filter to apply
+     */
+    fun filterAdapter(filter: String) {
+        if (filter.isEmpty()) {
+            refreshAdapter()
+        } else {
+            recursiveFilter(filter, if (pathStack.isEmpty()) null else pathStack.peek())
+        }
+    }
+
+    /**
+     * recursively filters a directory and extract all the matching items
+     *
+     * @param filter the filter to apply
+     * @param dir the directory to filter
+     */
+    private fun recursiveFilter(filter: String, dir: File?) { // on the root the pathStack is empty
+        val passwordItems = if (dir == null)
+            getPasswords(getRepositoryDirectory(requireContext()), sortOrder)
+        else
+            getPasswords(dir, getRepositoryDirectory(requireContext()), sortOrder)
+        val rec = settings.getBoolean("filter_recursively", true)
+        for (item in passwordItems) {
+            if (item.type == PasswordItem.TYPE_CATEGORY && rec) {
+                recursiveFilter(filter, item.file)
+            }
+            val matches = item.toString().toLowerCase(Locale.ROOT).contains(filter.toLowerCase(Locale.ROOT))
+            val inAdapter = recyclerAdapter.values.contains(item)
+            if (matches && !inAdapter) {
+                recyclerAdapter.add(item)
+            } else if (!matches && inAdapter) {
+                recyclerAdapter.remove(recyclerAdapter.values.indexOf(item))
+            }
+        }
+    }
+
+    /** Goes back one level back in the path  */
+    fun popBack() {
+        if (passListStack.isEmpty()) return
+        recyclerView.scrollToPosition(scrollPosition.pop())
+        recyclerAdapter.clear()
+        recyclerAdapter.addAll(passListStack.pop())
+        pathStack.pop()
+    }
+
+    /**
+     * gets the current directory
+     *
+     * @return the current directory
+     */
+    val currentDir: File?
+        get() = if (pathStack.isEmpty()) getRepositoryDirectory(requireContext()) else pathStack.peek()
+
+    val isNotEmpty: Boolean
+        get() = !passListStack.isEmpty()
+
+    fun dismissActionMode() {
+        recyclerAdapter.actionMode?.finish()
+    }
+
+    private val sortOrder: PasswordRepository.PasswordSortOrder
+        get() = getSortOrder(settings)
+
+    interface OnFragmentInteractionListener {
+        fun onFragmentInteraction(item: PasswordItem)
+    }
+}