From a0aa84e04b2b027f3c62274418af54d9dc59190f Mon Sep 17 00:00:00 2001
From: Pranav Pandey <pranavpande92@gmail.com>
Date: Sat, 22 May 2021 10:09:24 +0530
Subject: [PATCH] Constraint layout 2.0.4

Target SDK 30 and Build tools 30.0.3.
Notifiy page change events for custom callback.
---
 .travis.yml                                   | 14 ++++-----
 README.md                                     |  2 +-
 build.gradle                                  | 10 +++----
 .../motion/widget/DynamicMotionLayout.java    | 30 +++++++++++++++++--
 4 files changed, 40 insertions(+), 16 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 6169504..0527419 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,17 +1,17 @@
 language: android
-jdk: oraclejdk8
+jdk: oraclejdk11
 
 before_install:
   - mkdir "$ANDROID_HOME/licenses" || true
-  - echo -e "\n8933bad161af4178b1185d1a37fbf41ea5269c55" > "$ANDROID_HOME/licenses/android-sdk-license"
+  - echo -e "\n24333f8a63b6825ea9c5514f83c2829b004d1fee" > "$ANDROID_HOME/licenses/android-sdk-license"
   - echo -e "\n84831b9409646a918e30573bab4c9c91346d8abd" > "$ANDROID_HOME/licenses/android-sdk-preview-license"
 
 android:
   components:
     - tools
     - platform-tools
-    - build-tools-29.0.3
-    - android-29
+    - build-tools-30.0.3
+    - android-30
     - extra-android-support
     - extra-android-m2repository
     - extra-google-m2repository
@@ -21,14 +21,14 @@ script:
   - ./gradlew build
 
 after_success:
-  - ./gradlew javadocRelease
+  - ./gradlew generateJavadoc
 
 deploy:
-  provider: pages:git
+  provider: pages
   token: $GITHUB_TOKEN
   edge: true
   keep_history: true
   local_dir: dynamic-motion/build/docs/javadoc/release
   on:
-    all_branches: true
+    branch: master
     tags: true
diff --git a/README.md b/README.md
index d0f12c1..f3f5c53 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ Set page count for `ViewPager` to divide the `transition` between different page
 
 ```java
 // At runtime
-dynamicMotionLayout.setPageCount(int, @Nullable ViewPager.OnPageChangeListener);
+dynamicMotionLayout.setPageCount(int, @Nullable ViewPager2.OnPageChangeCallback);
 ```
 
 ### Motion scene
diff --git a/build.gradle b/build.gradle
index f1a4bdf..c367655 100644
--- a/build.gradle
+++ b/build.gradle
@@ -16,12 +16,12 @@
 
 buildscript {
     ext.versions = [
-            'compileSdk'      : 29,
+            'compileSdk'      : 30,
             'minSdk'          : 18,
-            'targetSdk'       : 29,
-            'buildTools'      : '29.0.3',
-            'appcompat'       : '1.2.0-alpha03',
-            'constraintlayout': '2.0.0-beta4',
+            'targetSdk'       : 30,
+            'buildTools'      : '30.0.3',
+            'appcompat'       : '1.2.0',
+            'constraintlayout': '2.0.4',
             'kotlin'          : '1.5.0',
             'viewpager2'      : '1.0.0'
     ]
diff --git a/dynamic-motion/src/main/java/com/pranavpandey/android/dynamic/motion/widget/DynamicMotionLayout.java b/dynamic-motion/src/main/java/com/pranavpandey/android/dynamic/motion/widget/DynamicMotionLayout.java
index 982fadb..d33a030 100644
--- a/dynamic-motion/src/main/java/com/pranavpandey/android/dynamic/motion/widget/DynamicMotionLayout.java
+++ b/dynamic-motion/src/main/java/com/pranavpandey/android/dynamic/motion/widget/DynamicMotionLayout.java
@@ -16,6 +16,7 @@
 
 package com.pranavpandey.android.dynamic.motion.widget;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.util.AttributeSet;
@@ -23,7 +24,6 @@
 
 import androidx.annotation.Nullable;
 import androidx.constraintlayout.motion.widget.MotionLayout;
-import androidx.viewpager.widget.ViewPager;
 import androidx.viewpager2.widget.ViewPager2;
 
 import com.pranavpandey.android.dynamic.motion.R;
@@ -98,10 +98,11 @@ public void initialize() {
      * Set the page count for the view pager.
      *
      * @param pageCount The page count to be set.
-     * @param onPageChangeListener The page change listener to receive page change events.
+     * @param onPageChangeCallback The callback to receive page change events.
      */
+    @SuppressLint("NotifyDataSetChanged")
     public void setPageCount(int pageCount,
-            @Nullable ViewPager.OnPageChangeListener onPageChangeListener) {
+            @Nullable ViewPager2.OnPageChangeCallback onPageChangeCallback) {
         this.mPageCount = pageCount;
 
         if (mViewPager == null) {
@@ -118,6 +119,29 @@ public void onPageScrolled(int position,
                 super.onPageScrolled(position, positionOffset, positionOffsetPixels);
 
                 setProgress((position + positionOffset) / (mPageCount - 1));
+
+                if (onPageChangeCallback != null) {
+                    onPageChangeCallback.onPageScrolled(position,
+                            positionOffset, positionOffsetPixels);
+                }
+            }
+
+            @Override
+            public void onPageSelected(int position) {
+                super.onPageSelected(position);
+
+                if (onPageChangeCallback != null) {
+                    onPageChangeCallback.onPageSelected(position);
+                }
+            }
+
+            @Override
+            public void onPageScrollStateChanged(@ViewPager2.ScrollState int state) {
+                super.onPageScrollStateChanged(state);
+
+                if (onPageChangeCallback != null) {
+                    onPageChangeCallback.onPageScrollStateChanged(state);
+                }
             }
         });