Very early shot at batch message action UI

res/drawable/checkbox.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+     <item android:state_checked="true" android:state_focused="true"
+          android:drawable="@drawable/checkbox_on_background_focus_yellow" />
+
+     <item android:state_checked="false" android:state_focused="true"
+          android:drawable="@drawable/checkbox_off_background_focus_yellow" />
+
+     <item android:state_checked="false"
+          android:drawable="@drawable/checkbox_off_background" />
+
+     <item android:state_checked="true"
+          android:drawable="@drawable/checkbox_on_background" />
+
+</selector>

res/drawable/checkbox_background.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:drawable="@drawable/checkbox_label_background" />
+
+</selector>

res/layout/message_list_item.xml

@@ -13,7 +13,6 @@
         android:layout_width="4dip"
         android:layout_height="fill_parent"
         android:layout_centerVertical="true" />
-
 	<CheckBox
 		android:id="@+id/flagged"
 		android:layout_width="wrap_content"
@@ -23,6 +22,17 @@
 		android:layout_gravity="center_vertical"
 		android:layout_alignParentRight="true"
 		/>
+    <!-- http://stackoverflow.com/questions/1121192/android-custom-listview-unable-to-click-on-items -->
+    <CheckBox
+        android:id="@+id/selected_checkbox"
+        android:layout_width="wrap_content"
+        android:layout_height="fill_parent"
+        android:button="@drawable/checkbox"
+        android:layout_toRightOf="@+id/chip"
+        android:layout_centerVertical="true"
+        android:focusable="false"
+         android:text=""
+    />
     <TextView
         android:id="@+id/subject"
         android:ellipsize="end"
@@ -33,6 +43,7 @@
         android:layout_height="wrap_content"
         android:paddingLeft="10dip"
         android:layout_toLeftOf="@id/flagged"
+        android:layout_toRightOf="@+id/selected_checkbox"
         android:layout_marginRight="1dip" />
     <TextView
         android:id="@+id/date"
@@ -57,7 +68,7 @@
         android:textColor="?android:attr/textColorSecondary"
         android:paddingLeft="12dip"
         android:layout_toLeftOf="@id/date"
-        android:layout_alignParentLeft="true"
+        android:layout_toRightOf="@+id/selected_checkbox"
         android:layout_alignParentBottom="true"
 		/>
 </RelativeLayout>

src/com/android/email/activity/MessageList.java

@@ -4,7 +4,6 @@ import java.text.DateFormat;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Date;
-import java.util.Iterator;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -18,7 +17,6 @@ import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.Handler;
-import android.os.Process;
 import android.util.Config;
 import android.util.Log;
 import android.view.ContextMenu;
@@ -41,6 +39,9 @@ import android.widget.Toast;
 import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.AdapterView.OnItemClickListener;
 
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
 import com.android.email.K9ListActivity;
 import com.android.email.Account;
 import com.android.email.Email;
@@ -1438,6 +1439,10 @@ public class MessageList extends K9ListActivity {
                 });
 
                 holder.chip.setBackgroundResource(colorChipResId);
+                holder.selected = (CheckBox) view.findViewById(R.id.selected_checkbox);
+                if (holder.selected!=null) {
+                    holder.selected.setOnCheckedChangeListener(holder);
+                }
                 view.setTag(holder);
             }
 
@@ -1477,6 +1482,10 @@ public class MessageList extends K9ListActivity {
                     null, // top
                     message.hasAttachments ? mAttachmentIcon : null, // right
                     null); // bottom
+                holder.position = position;
+                if (holder.selected!=null) {
+                    holder.selected.setChecked(message.selected);
+                }
             } else {
                 holder.chip.getBackground().setAlpha(0);
                 holder.subject.setText("No subject");
@@ -1485,6 +1494,10 @@ public class MessageList extends K9ListActivity {
                 holder.from.setTypeface(null, Typeface.NORMAL);
                 holder.date.setText("No date");
                 holder.from.setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);
+                holder.position = -1;
+                if (holder.selected!=null) {
+                    holder.selected.setChecked(false);
+                }
             }
             return view;
         }
@@ -1564,11 +1577,15 @@ public class MessageList extends K9ListActivity {
 
         public FolderInfoHolder folder;
 
+        public boolean selected;
 
         // Empty constructor for comparison
-        public MessageInfoHolder() {}
+        public MessageInfoHolder() {
+            this.selected = false;
+        }
 
         public MessageInfoHolder(Message m, FolderInfoHolder folder) {
+            this();
             populate(m, folder);
         }
 
@@ -1687,13 +1704,24 @@ public class MessageList extends K9ListActivity {
 
     }
     
-    class MessageViewHolder {
+    class MessageViewHolder
+        implements OnCheckedChangeListener {
         public TextView subject;
         public TextView preview;
         public TextView from;
         public TextView date;
         public CheckBox flagged;
         public View chip;
+        public CheckBox selected;
+        public int position = -1;
+
+        @Override
+        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+            if (position!=-1) {
+                MessageInfoHolder message = (MessageInfoHolder) mAdapter.getItem(position);
+                message.selected = isChecked;
+            }
+        }
     }
 
     class FooterViewHolder {