From 89002ba2ece50c3d1dde3a5e67184384960f8a5c Mon Sep 17 00:00:00 2001
From: Raj Yengisetty <rajesh@cyngn.com>
Date: Wed, 11 Mar 2015 18:04:08 -0700
Subject: Calendar: add feature to select/deselect all events in delete view

Change-Id: I1301d921474d848d6c877eb904bd7a00df13c48a
---
 res/menu/delete_events_title_bar.xml               |  4 ++++
 src/com/android/calendar/DeleteEventsActivity.java | 20 +++++++++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/res/menu/delete_events_title_bar.xml b/res/menu/delete_events_title_bar.xml
index 4ab869fb..49907de0 100644
--- a/res/menu/delete_events_title_bar.xml
+++ b/res/menu/delete_events_title_bar.xml
@@ -37,5 +37,9 @@ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
         android:title="@string/action_delete"
         android:visible="true">
     </item>
+    <item android:id="@+id/select_all_check"
+          android:title="@string/action_select_all"
+          android:showAsAction="never"
+          android:checkable="true" />
 
 </menu>
diff --git a/src/com/android/calendar/DeleteEventsActivity.java b/src/com/android/calendar/DeleteEventsActivity.java
index da2b6bc5..fbab524d 100644
--- a/src/com/android/calendar/DeleteEventsActivity.java
+++ b/src/com/android/calendar/DeleteEventsActivity.java
@@ -108,6 +108,8 @@ public class DeleteEventsActivity extends ListActivity
     private AsyncQueryService mService;
     private TextView mHeaderTextView;
 
+    private boolean mIgnoreSelections = false;
+
     private Map<Long, Long> mSelectedMap = new HashMap<Long, Long>();
     private Map<Long, String> mCalendarsMap = new HashMap<Long, String>();
     private List<Long> mEventList = new ArrayList<Long>();
@@ -255,6 +257,10 @@ public class DeleteEventsActivity extends ListActivity
         @Override
         public void onItemCheckedStateChanged(ActionMode mode, int position,
                                               long id, boolean checked) {
+            // We're updating selections manually ignore changes
+            if (mIgnoreSelections) {
+                return;
+            }
             int firstVisiblePosition = mListView.getFirstVisiblePosition();
             int actualPosition = position - firstVisiblePosition;
 
@@ -301,6 +307,16 @@ public class DeleteEventsActivity extends ListActivity
                                 : R.string.no_events, Toast.LENGTH_SHORT).show();
                     }
                     return true;
+                case R.id.select_all_check:
+                    mIgnoreSelections = true;
+                    if (item.isChecked()) {
+                        selectNone();
+                    } else {
+                        selectAll();
+                    }
+                    mIgnoreSelections = false;
+                    invalidateOptionsMenu();
+                    return true;
             }
             return false;
         }
@@ -316,7 +332,9 @@ public class DeleteEventsActivity extends ListActivity
         public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
             // Here you can perform updates to the CAB due to
             // an invalidate() request
-            return false;
+            MenuItem selectAllItem = menu.findItem(R.id.select_all_check);
+            selectAllItem.setChecked(mSelectedMap.size() == mEventList.size());
+            return true;
         }
     };
 
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