Item selection

app/src/main/java/eu/kanade/mangafeed/ui/fragment/LibraryFragment.java

@@ -2,9 +2,11 @@ package eu.kanade.mangafeed.ui.fragment;
 
 import android.os.Bundle;
 import android.support.v7.widget.SearchView;
+import android.view.ActionMode;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.GridView;
@@ -93,6 +95,37 @@ public class LibraryFragment extends BaseFragment implements LibraryView {
                 (parent, view, position, id) ->
                         presenter.onMangaClick(position)
         );
+        grid.setMultiChoiceModeListener(new GridView.MultiChoiceModeListener() {
+            @Override
+            public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
+                mode.setTitle(getResources().getString(R.string.library_selection_title)
+                        + ": " + grid.getCheckedItemCount());
+
+
+            }
+
+            @Override
+            public boolean onCreateActionMode(ActionMode mode, Menu menu) {
+                MenuInflater inflater = mode.getMenuInflater();
+                inflater.inflate(R.menu.library_selection, menu);
+                return true;
+            }
+
+            @Override
+            public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
+                return false;
+            }
+
+            @Override
+            public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+                return false;
+            }
+
+            @Override
+            public void onDestroyActionMode(ActionMode mode) {
+
+            }
+        });
     }
 
 }

app/src/main/res/drawable/library_item_background.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:exitFadeDuration="@android:integer/config_shortAnimTime">>
+    <item android:drawable="@color/line_grey" android:state_pressed="true"/>
+    <item android:drawable="@color/line_grey" android:state_selected="true"/>
+    <item android:drawable="@color/line_grey" android:state_activated="true"/>
+    <item android:drawable="@color/library_text_background"/>
+
+</selector>

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

@@ -16,6 +16,7 @@
         android:numColumns="auto_fit"
         android:stretchMode="columnWidth"
         android:fastScrollEnabled="true"
+        android:choiceMode="multipleChoiceModal"
         tools:listitem="@layout/item_library" />
 
 </FrameLayout>

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

@@ -6,6 +6,7 @@
     android:orientation="vertical"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:background="@drawable/library_item_background"
     >
 
     <FrameLayout
@@ -42,7 +43,7 @@
         android:layout_width="match_parent"
         android:layout_height="36dp"
         android:id="@+id/footerLinearLayout"
-        android:background="@color/md_grey_300">
+        >
 
         <eu.kanade.mangafeed.widget.PTSansTextView
             android:layout_width="match_parent"

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

@@ -0,0 +1,12 @@
+<?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/action_delete"
+        android:title="@string/action_delete"
+        android:icon="@drawable/ic_action_delete"
+        android:orderInCategory="1"
+        app:showAsAction="always"/>
+
+</menu>

app/src/main/res/values/colors.xml

@@ -14,4 +14,5 @@
     <color name="light_grey">#D4D4D4</color>
     <color name="bg_light_grey">#E9E9E9</color>
     <color name="black_87pc">#DD000000</color>
+    <color name="library_text_background">#E8E8E8</color>
 </resources>

app/src/main/res/values/strings.xml

@@ -33,5 +33,7 @@
     <string name="action_search">Search</string>
     <string name="action_refresh">Refresh</string>
     <string name="library_search_hint">Title or author...</string>
+    <string name="action_delete">Delete</string>
+    <string name="library_selection_title">Selected</string>
 
 </resources>

app/src/main/res/values/styles.xml

@@ -9,6 +9,8 @@
         <item name="android:textColorPrimary">@color/black_87pc</item>
         <item name="android:textColor">@color/black_87pc</item>
         <item name="colorControlNormal">@color/white</item>
+        <item name="windowActionModeOverlay">true</item>
+        <item name="actionModeStyle">@style/Widget.ActionMode</item>
     </style>
 
     <style name="AppTheme.NoActionBar" parent="AppTheme">
@@ -21,7 +23,10 @@
         <item name="drawerArrowStyle">@style/HamburgerIconStyle</item>
         <item name="android:itemTextAppearance">@style/OptionsMenuTextColor</item>
     </style>
-
+    
+    <style name="Widget.ActionMode" parent="@style/Widget.AppCompat.ActionMode">
+        <item name="background">@color/primary</item>
+    </style>
     <style name="AlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
         <item name="android:windowTitleStyle">@style/DialogTitleText</item>
         <item name="colorAccent">@color/primary</item>