From 7a6c9ced695687bfb2b3b6d21e8b9599bbc40c2d Mon Sep 17 00:00:00 2001
From: Greg Ennis <greg@innodroid.com>
Date: Mon, 1 Aug 2016 07:12:27 -0400
Subject: [PATCH] Allow disabling SwipeRefreshLayout when scrolling ViewPager
 horizontally. Fixes #420

---
 .../roomorama/caldroid/CaldroidFragment.java  | 19 +++++++++++++++++++
 .../roomorama/caldroid/CaldroidListener.java  |  9 +++++++++
 .../CaldroidSampleActivity.java               | 15 ++++++++++++++-
 .../src/main/res/layout/activity_main.xml     |  9 ++++++++-
 4 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/caldroid/src/main/java/com/roomorama/caldroid/CaldroidFragment.java b/caldroid/src/main/java/com/roomorama/caldroid/CaldroidFragment.java
index 478d148..c61d58b 100644
--- a/caldroid/src/main/java/com/roomorama/caldroid/CaldroidFragment.java
+++ b/caldroid/src/main/java/com/roomorama/caldroid/CaldroidFragment.java
@@ -11,6 +11,7 @@
 import android.support.v4.app.DialogFragment;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
+import android.support.v4.view.ViewPager;
 import android.support.v4.view.ViewPager.OnPageChangeListener;
 import android.text.format.DateUtils;
 import android.text.format.Time;
@@ -1386,6 +1387,24 @@ private void setupDateGridPages(View view) {
         // height correctly
         dateViewPager.setDatesInMonth(dateInMonthsList);
 
+        // Set callback to allow app to disable swiperefresh or other uses
+        dateViewPager.addOnPageChangeListener(new OnPageChangeListener() {
+            @Override
+            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+            }
+
+            @Override
+            public void onPageSelected(int position) {
+            }
+
+            @Override
+            public void onPageScrollStateChanged(int state) {
+                if (caldroidListener != null) {
+                    caldroidListener.pagerScrolling(state != ViewPager.SCROLL_STATE_IDLE);
+                }
+            }
+        });
+
         // MonthPagerAdapter actually provides 4 real fragments. The
         // InfinitePagerAdapter only recycles fragment provided by this
         // MonthPagerAdapter
diff --git a/caldroid/src/main/java/com/roomorama/caldroid/CaldroidListener.java b/caldroid/src/main/java/com/roomorama/caldroid/CaldroidListener.java
index 4a5bf46..b3d4420 100644
--- a/caldroid/src/main/java/com/roomorama/caldroid/CaldroidListener.java
+++ b/caldroid/src/main/java/com/roomorama/caldroid/CaldroidListener.java
@@ -54,4 +54,13 @@ public void onChangeMonth(int month, int year) {
     public void onCaldroidViewCreated() {
         // Do nothing
     }
+
+    /**
+     * Inform client that the viewpager is scrolling. Give the app the chance to
+     * disable a swipe refresh layout, or do other checking
+     * @param scrolling
+     */
+    public void pagerScrolling(boolean scrolling) {
+
+    }
 }
diff --git a/caldroidSampleActivity/src/main/java/com/caldroidsample/CaldroidSampleActivity.java b/caldroidSampleActivity/src/main/java/com/caldroidsample/CaldroidSampleActivity.java
index ee52cf6..3454f49 100644
--- a/caldroidSampleActivity/src/main/java/com/caldroidsample/CaldroidSampleActivity.java
+++ b/caldroidSampleActivity/src/main/java/com/caldroidsample/CaldroidSampleActivity.java
@@ -5,6 +5,7 @@
 import android.graphics.drawable.ColorDrawable;
 import android.os.Bundle;
 import android.support.v4.app.FragmentTransaction;
+import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.app.AppCompatActivity;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -21,8 +22,9 @@
 import java.util.Date;
 
 @SuppressLint("SimpleDateFormat")
-public class CaldroidSampleActivity extends AppCompatActivity {
+public class CaldroidSampleActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener {
     private boolean undo = false;
+    private SwipeRefreshLayout refresh;
     private CaldroidFragment caldroidFragment;
     private CaldroidFragment dialogCaldroidFragment;
 
@@ -55,6 +57,9 @@ protected void onCreate(Bundle savedInstanceState) {
 
         final SimpleDateFormat formatter = new SimpleDateFormat("dd MMM yyyy");
 
+        refresh = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh);
+        refresh.setOnRefreshListener(this);
+
         // Setup caldroid fragment
         // **** If you want normal CaldroidFragment, use below line ****
         caldroidFragment = new CaldroidFragment();
@@ -132,6 +137,10 @@ public void onCaldroidViewCreated() {
                 }
             }
 
+            @Override
+            public void pagerScrolling(boolean scrolling) {
+                refresh.setEnabled(!scrolling);
+            }
         };
 
         // Setup Caldroid
@@ -277,4 +286,8 @@ protected void onSaveInstanceState(Bundle outState) {
         }
     }
 
+    @Override
+    public void onRefresh() {
+        refresh.setRefreshing(false);
+    }
 }
diff --git a/caldroidSampleActivity/src/main/res/layout/activity_main.xml b/caldroidSampleActivity/src/main/res/layout/activity_main.xml
index 2fdbc27..c7f3080 100644
--- a/caldroidSampleActivity/src/main/res/layout/activity_main.xml
+++ b/caldroidSampleActivity/src/main/res/layout/activity_main.xml
@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<ScrollView
+<android.support.v4.widget.SwipeRefreshLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/swipe_refresh"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+<ScrollView
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
@@ -44,3 +49,5 @@
 
     </LinearLayout>
 </ScrollView>
+</android.support.v4.widget.SwipeRefreshLayout>
+