rewriting eventslist to recyclerview, initial version

app/src/main/kotlin/com/simplemobiletools/calendar/adapters/EventListAdapter.kt

@@ -0,0 +1,151 @@
+package com.simplemobiletools.calendar.adapters
+
+import android.graphics.drawable.Drawable
+import android.support.v7.view.ActionMode
+import android.support.v7.widget.RecyclerView
+import android.view.*
+import com.bignerdranch.android.multiselector.ModalMultiSelectorCallback
+import com.bignerdranch.android.multiselector.MultiSelector
+import com.bignerdranch.android.multiselector.SwappingHolder
+import com.simplemobiletools.calendar.R
+import com.simplemobiletools.calendar.activities.SimpleActivity
+import com.simplemobiletools.calendar.helpers.Formatter
+import com.simplemobiletools.calendar.models.ListEvent
+import com.simplemobiletools.calendar.models.ListItem
+import com.simplemobiletools.calendar.models.ListSection
+import kotlinx.android.synthetic.main.event_item.view.*
+import java.util.*
+
+class EventListAdapter(val activity: SimpleActivity, val mItems: List<ListItem>, val listener: EventListAdapter.ItemOperationsListener?, val itemClick: (ListItem) -> Unit) :
+        RecyclerView.Adapter<RecyclerView.ViewHolder>() {
+    val multiSelector = MultiSelector()
+    val views = ArrayList<View>()
+
+    val ITEM_EVENT = 0
+    val ITEM_HEADER = 1
+
+    companion object {
+        var actMode: ActionMode? = null
+        val markedItems = HashSet<Int>()
+
+        var mTopDivider: Drawable? = null
+        var mNow = (System.currentTimeMillis() / 1000).toInt()
+        var mOrangeColor = 0
+        var mGreyColor = 0
+        var mTodayDate = ""
+
+        fun toggleItemSelection(itemView: View, select: Boolean, pos: Int = -1) {
+            itemView.event_item_frame.isSelected = select
+            if (pos == -1)
+                return
+
+            if (select)
+                markedItems.add(pos)
+            else
+                markedItems.remove(pos)
+        }
+    }
+
+    init {
+        mTopDivider = activity.resources.getDrawable(R.drawable.divider)
+        mOrangeColor = activity.resources.getColor(R.color.colorPrimary)
+        val mTodayCode = Formatter.getDayCodeFromTS(mNow)
+        mTodayDate = Formatter.getEventDate(activity, mTodayCode)
+    }
+
+    val multiSelectorMode = object : ModalMultiSelectorCallback(multiSelector) {
+        override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
+            return when (item.itemId) {
+                else -> false
+            }
+        }
+
+        override fun onCreateActionMode(actionMode: ActionMode?, menu: Menu?): Boolean {
+            super.onCreateActionMode(actionMode, menu)
+            actMode = actionMode
+            activity.menuInflater.inflate(R.menu.cab_event_list, menu)
+            return true
+        }
+
+        override fun onPrepareActionMode(actionMode: ActionMode?, menu: Menu) = true
+
+        override fun onDestroyActionMode(actionMode: ActionMode?) {
+            super.onDestroyActionMode(actionMode)
+            views.forEach { toggleItemSelection(it, false) }
+            markedItems.clear()
+        }
+    }
+
+    override fun getItemViewType(position: Int) = if (mItems[position] is ListEvent) ITEM_EVENT else ITEM_HEADER
+
+    override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): RecyclerView.ViewHolder {
+        val layoutId = if (viewType == ITEM_EVENT) R.layout.event_list_item else R.layout.event_list_section
+        val view = LayoutInflater.from(parent?.context).inflate(layoutId, parent, false)
+        return if (viewType == ITEM_EVENT)
+            EventListAdapter.ViewHolder(activity, view, itemClick)
+        else
+            EventListAdapter.SectionHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        if (holder.itemViewType == ITEM_EVENT)
+            views.add((holder as ViewHolder).bindView(multiSelectorMode, multiSelector, mItems[position], position))
+        else
+            (holder as SectionHolder).bindView(mItems[position])
+    }
+
+    override fun getItemCount() = mItems.size
+
+    class ViewHolder(val activity: SimpleActivity, view: View, val itemClick: (ListItem) -> (Unit)) : SwappingHolder(view, MultiSelector()) {
+        fun bindView(multiSelectorCallback: ModalMultiSelectorCallback, multiSelector: MultiSelector, listItem: ListItem, pos: Int): View {
+            val item = listItem as ListEvent
+            itemView.apply {
+                event_item_title.text = item.title
+                event_item_description.text = item.description
+                event_item_start.text = Formatter.getTime(item.startTS)
+
+                if (item.startTS == item.endTS) {
+                    event_item_end.visibility = View.INVISIBLE
+                } else {
+                    event_item_end.text = Formatter.getTime(item.endTS)
+                    event_item_end.visibility = View.VISIBLE
+
+                    val startCode = Formatter.getDayCodeFromTS(item.startTS)
+                    val endCode = Formatter.getDayCodeFromTS(item.endTS)
+                    if (startCode != endCode) {
+                        event_item_end.append(" (${Formatter.getEventDate(context, endCode)})")
+                    }
+                }
+
+                val currTextColor = if (item.startTS <= mNow) mOrangeColor else mGreyColor
+                event_item_start.setTextColor(currTextColor)
+                event_item_end.setTextColor(currTextColor)
+                event_item_title.setTextColor(currTextColor)
+                event_item_description.setTextColor(currTextColor)
+            }
+
+            return itemView
+        }
+    }
+
+    class SectionHolder(view: View) : RecyclerView.ViewHolder(view) {
+        fun bindView(listItem: ListItem): View {
+            val item = listItem as ListSection
+            itemView.apply {
+                event_item_title.text = item.title
+                event_item_title.setCompoundDrawablesWithIntrinsicBounds(null, if (position == 0) null else mTopDivider, null, null)
+
+                if (mGreyColor == 0)
+                    mGreyColor = event_item_title.currentTextColor
+
+                event_item_title.setTextColor(if (item.title == mTodayDate) mOrangeColor else mGreyColor)
+            }
+
+            return itemView
+        }
+    }
+
+    interface ItemOperationsListener {
+        fun prepareForDeleting(ids: ArrayList<Int>)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/calendar/adapters/EventsListAdapter.kt

@@ -1,120 +0,0 @@
-package com.simplemobiletools.calendar.adapters
-
-import android.content.Context
-import android.graphics.drawable.Drawable
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.widget.BaseAdapter
-import android.widget.TextView
-import com.simplemobiletools.calendar.helpers.Formatter
-import com.simplemobiletools.calendar.R
-import com.simplemobiletools.calendar.models.ListEvent
-import com.simplemobiletools.calendar.models.ListItem
-import com.simplemobiletools.calendar.models.ListSection
-import kotlinx.android.synthetic.main.event_item.view.*
-
-class EventsListAdapter(val context: Context, val mEvents: List<ListItem>) : BaseAdapter() {
-    val ITEM_EVENT = 0
-    val ITEM_HEADER = 1
-
-    private val mInflater: LayoutInflater
-    private var mTopDivider: Drawable? = null
-    private var mNow = (System.currentTimeMillis() / 1000).toInt()
-    private var mOrangeColor = 0
-    private var mGreyColor = 0
-    private var mTodayDate = ""
-
-    init {
-        mInflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
-        mTopDivider = context.resources.getDrawable(R.drawable.divider)
-        mOrangeColor = context.resources.getColor(R.color.colorPrimary)
-        val mTodayCode = Formatter.getDayCodeFromTS(mNow)
-        mTodayDate = Formatter.getEventDate(context, mTodayCode)
-    }
-
-    override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
-        var view = convertView
-        val viewHolder: ViewHolder
-        val type = getItemViewType(position)
-
-        if (view == null) {
-            if (type == ITEM_EVENT) {
-                view = mInflater.inflate(R.layout.event_list_item, parent, false)
-            } else {
-                view = mInflater.inflate(R.layout.event_list_section, parent, false)
-                view.setOnClickListener(null)
-            }
-            viewHolder = ViewHolder(view)
-            view!!.tag = viewHolder
-        } else {
-            viewHolder = view.tag as ViewHolder
-        }
-
-        if (type == ITEM_EVENT) {
-            val item = mEvents[position] as ListEvent
-            viewHolder.apply {
-                title.text = item.title
-                description?.text = item.description
-                start?.text = Formatter.getTime(item.startTS)
-
-                if (item.startTS == item.endTS) {
-                    end?.visibility = View.INVISIBLE
-                } else {
-                    end?.text = Formatter.getTime(item.endTS)
-                    end?.visibility = View.VISIBLE
-
-                    val startCode = Formatter.getDayCodeFromTS(item.startTS)
-                    val endCode = Formatter.getDayCodeFromTS(item.endTS)
-                    if (startCode != endCode) {
-                        end?.append(" (${Formatter.getEventDate(context, endCode)})")
-                    }
-                }
-
-                val currTextColor = if (item.startTS <= mNow) mOrangeColor else mGreyColor
-                start?.setTextColor(currTextColor)
-                end?.setTextColor(currTextColor)
-                title.setTextColor(currTextColor)
-                description?.setTextColor(currTextColor)
-            }
-        } else {
-            val item = mEvents[position] as ListSection
-            viewHolder.title.text = item.title
-            viewHolder.title.setCompoundDrawablesWithIntrinsicBounds(null, if (position == 0) null else mTopDivider, null, null)
-
-            if (mGreyColor == 0)
-                mGreyColor = viewHolder.title.currentTextColor
-
-            viewHolder.title.setTextColor(if (item.title == mTodayDate) mOrangeColor else mGreyColor)
-        }
-
-        return view
-    }
-
-    override fun getItemViewType(position: Int): Int {
-        return if (mEvents[position] is ListEvent) ITEM_EVENT else ITEM_HEADER
-    }
-
-    override fun getViewTypeCount(): Int {
-        return 2
-    }
-
-    override fun getCount(): Int {
-        return mEvents.size
-    }
-
-    override fun getItem(position: Int): Any {
-        return mEvents[position]
-    }
-
-    override fun getItemId(position: Int): Long {
-        return 0
-    }
-
-    internal class ViewHolder(view: View) {
-        val title = view.event_item_title
-        val description: TextView? = view.event_item_description
-        val start: TextView? = view.event_item_start
-        val end: TextView? = view.event_item_end
-    }
-}

app/src/main/kotlin/com/simplemobiletools/calendar/fragments/EventListFragment.kt

@@ -3,15 +3,15 @@ package com.simplemobiletools.calendar.fragments
 import android.app.Activity
 import android.content.Intent
 import android.os.Bundle
-import android.os.Parcelable
 import android.support.v4.app.Fragment
-import android.view.*
-import android.widget.AbsListView
-import android.widget.AdapterView
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
 import com.simplemobiletools.calendar.R
 import com.simplemobiletools.calendar.activities.EventActivity
 import com.simplemobiletools.calendar.activities.MainActivity
-import com.simplemobiletools.calendar.adapters.EventsListAdapter
+import com.simplemobiletools.calendar.activities.SimpleActivity
+import com.simplemobiletools.calendar.adapters.EventListAdapter
 import com.simplemobiletools.calendar.extensions.beGoneIf
 import com.simplemobiletools.calendar.extensions.beVisibleIf
 import com.simplemobiletools.calendar.helpers.DBHelper
@@ -27,13 +27,11 @@ import org.joda.time.DateTime
 import java.util.*
 import kotlin.comparisons.compareBy
 
-class EventListFragment : Fragment(), DBHelper.GetEventsListener, AdapterView.OnItemClickListener, AbsListView.MultiChoiceModeListener, DBHelper.EventsListener {
+class EventListFragment : Fragment(), DBHelper.GetEventsListener, DBHelper.EventsListener, EventListAdapter.ItemOperationsListener {
     private val EDIT_EVENT = 1
 
-    var mSelectedItemsCnt = 0
     var mListItems: ArrayList<ListItem> = ArrayList()
     var mAllEvents: MutableList<Event>? = null
-    var mState: Parcelable? = null
     lateinit var mToBeDeleted: MutableList<Int>
     lateinit var mView: View
 
@@ -50,7 +48,6 @@ class EventListFragment : Fragment(), DBHelper.GetEventsListener, AdapterView.On
 
     override fun onPause() {
         super.onPause()
-        mState = mView.calendar_events_list.onSaveInstanceState()
     }
 
     private fun checkEvents() {
@@ -75,15 +72,13 @@ class EventListFragment : Fragment(), DBHelper.GetEventsListener, AdapterView.On
         }
 
         mAllEvents = events
-        val eventsAdapter = EventsListAdapter(context, mListItems)
+        val eventsAdapter = EventListAdapter(activity as SimpleActivity, mListItems, this) {
+            /*(activity as MainActivity).checkDeleteEvents()
+            (mListItems[position] as ListEvent).id*/
+        }
         activity?.runOnUiThread {
             mView.calendar_events_list.apply {
-                adapter = eventsAdapter
-                onItemClickListener = this@EventListFragment
-                setMultiChoiceModeListener(this@EventListFragment)
-
-                if (mState != null)
-                    onRestoreInstanceState(mState)
+                this@apply.adapter = eventsAdapter
             }
             checkPlaceholderVisibility()
         }
@@ -97,20 +92,11 @@ class EventListFragment : Fragment(), DBHelper.GetEventsListener, AdapterView.On
 
     private fun getEventsToShow(events: MutableList<Event>?) = events?.filter { !mToBeDeleted.contains(it.id) } ?: ArrayList()
 
-    private fun prepareDeleteEvents() {
-        val checked = mView.calendar_events_list.checkedItemPositions
-        mListItems.indices.filter { checked.get(it) }
-                .map { mListItems[it] }
-                .forEach { mToBeDeleted.add((it as ListEvent).id) }
-
+    override fun prepareForDeleting(ids: ArrayList<Int>) {
+        mToBeDeleted = ids
         notifyDeletion()
     }
 
-    override fun onItemClick(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
-        (activity as MainActivity).checkDeleteEvents()
-        editEvent((mListItems[position] as ListEvent).id)
-    }
-
     private fun editEvent(eventId: Int) {
         Intent(activity.applicationContext, EventActivity::class.java).apply {
             putExtra(EVENT_ID, eventId)
@@ -148,40 +134,6 @@ class EventListFragment : Fragment(), DBHelper.GetEventsListener, AdapterView.On
         checkEvents()
     }
 
-    override fun onPrepareActionMode(mode: ActionMode?, menu: Menu?) = true
-
-    override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
-        return when (item.itemId) {
-            R.id.cab_delete -> {
-                prepareDeleteEvents()
-                mode.finish()
-                true
-            }
-            else -> false
-        }
-    }
-
-    override fun onCreateActionMode(mode: ActionMode, menu: Menu?): Boolean {
-        val inflater = mode.menuInflater
-        inflater.inflate(R.menu.cab_day, menu)
-        return true
-    }
-
-    override fun onDestroyActionMode(mode: ActionMode?) {
-        mSelectedItemsCnt = 0
-    }
-
-    override fun onItemCheckedStateChanged(mode: ActionMode, position: Int, id: Long, checked: Boolean) {
-        if (checked) {
-            mSelectedItemsCnt++
-        } else {
-            mSelectedItemsCnt--
-        }
-
-        mode.title = mSelectedItemsCnt.toString()
-        mode.invalidate()
-    }
-
     override fun eventInserted(event: Event) {
         checkEvents()
     }

app/src/main/res/layout/fragment_event_list.xml

@@ -1,20 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/calendar_events_list_holder"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <ListView
+    <android.support.v7.widget.RecyclerView
         android:id="@+id/calendar_events_list"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:choiceMode="multipleChoiceModal"
         android:clipToPadding="false"
-        android:divider="@null"
         android:paddingLeft="@dimen/activity_margin"
         android:paddingTop="@dimen/medium_padding"
-        android:visibility="gone"/>
+        android:visibility="gone"
+        app:layoutManager="android.support.v7.widget.LinearLayoutManager"/>
 
     <TextView
         android:id="@+id/calendar_empty_list_placeholder"

app/src/main/res/menu/cab_event_list.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/cab_delete"
+        android:icon="@mipmap/delete"
+        android:title="@string/delete"
+        app:showAsAction="ifRoom"/>
+</menu>