From a962b8ef6cd0c620edc85ae7f2c500dea938438b Mon Sep 17 00:00:00 2001
From: Jumpei Matsuda <j.matsuda.bb26th@gmail.com>
Date: Mon, 16 Nov 2015 17:16:45 +0900
Subject: [PATCH 1/2] Fixed that the specified max height for the trigger of
 drop animation is ignored

This adds the safe insertion of OnPreDrawListener to ViewTreeObserver.
Max height is refreshed only on onPreDraw stage and it requires the observer.
---
 .../java/jp/co/recruit_lifestyle/android/widget/WaveView.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/library/src/main/java/jp/co/recruit_lifestyle/android/widget/WaveView.java b/library/src/main/java/jp/co/recruit_lifestyle/android/widget/WaveView.java
index 8125cdc..be0cb54 100644
--- a/library/src/main/java/jp/co/recruit_lifestyle/android/widget/WaveView.java
+++ b/library/src/main/java/jp/co/recruit_lifestyle/android/widget/WaveView.java
@@ -622,6 +622,10 @@ public void setMaxDropHeight(int maxDropHeight) {
     } else {
       mUpdateMaxDropHeight = maxDropHeight;
       mDropHeightUpdated = true;
+      if (getViewTreeObserver().isAlive()) {
+        getViewTreeObserver().removeOnPreDrawListener(this);
+        getViewTreeObserver().addOnPreDrawListener(this);
+      }
     }
   }
 

From d7e7f9e3992e73f185c630cc0c447f7ae42f7f37 Mon Sep 17 00:00:00 2001
From: Jumpei Matsuda <j.matsuda.bb26th@gmail.com>
Date: Mon, 16 Nov 2015 17:12:13 +0900
Subject: [PATCH 2/2] Added the SeekBar to change the parameters of WaveView

Affects sample module.
Added SeekBar can change the height which is the trigger of WaveView drop animation.
---
 .../sample/MainActivity.java                  | 21 +++++++++++++++++++
 sample/src/main/res/layout/activity_main.xml  |  8 +++++++
 2 files changed, 29 insertions(+)

diff --git a/sample/src/main/java/jp/co/recruit_lifestyle/sample/MainActivity.java b/sample/src/main/java/jp/co/recruit_lifestyle/sample/MainActivity.java
index f18064c..dd9dd78 100644
--- a/sample/src/main/java/jp/co/recruit_lifestyle/sample/MainActivity.java
+++ b/sample/src/main/java/jp/co/recruit_lifestyle/sample/MainActivity.java
@@ -10,7 +10,10 @@
 import android.view.WindowManager;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
+import android.widget.SeekBar;
+
 import java.util.ArrayList;
+
 import jp.co.recruit_lifestyle.android.widget.WaveSwipeRefreshLayout;
 
 public class MainActivity extends AppCompatActivity implements WaveSwipeRefreshLayout.OnRefreshListener {
@@ -38,6 +41,24 @@ private void initView() {
     //mWaveSwipeRefreshLayout.setMaxDropHeight(1500);
 
     mListview = (ListView) findViewById(R.id.main_list);
+
+    ((SeekBar) findViewById(R.id.seekbar_of_drop_height)).setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+      @Override
+      public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        // ignore
+      }
+
+      @Override
+      public void onStartTrackingTouch(SeekBar seekBar) {
+        // ignore
+      }
+
+      @Override
+      public void onStopTrackingTouch(SeekBar seekBar) {
+        float scale = (seekBar.getProgress() / 100f);
+        mWaveSwipeRefreshLayout.setMaxDropHeight((int) (mWaveSwipeRefreshLayout.getHeight() * scale));
+      }
+    });
   }
 
   private void setSampleData() {
diff --git a/sample/src/main/res/layout/activity_main.xml b/sample/src/main/res/layout/activity_main.xml
index d1ff3e8..4806a27 100644
--- a/sample/src/main/res/layout/activity_main.xml
+++ b/sample/src/main/res/layout/activity_main.xml
@@ -51,6 +51,14 @@
 
     </jp.co.recruit_lifestyle.android.widget.WaveSwipeRefreshLayout>
 
+    <SeekBar
+        android:id="@+id/seekbar_of_drop_height"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="100"
+        android:layout_alignParentBottom="true"
+        />
+
   </RelativeLayout>
 
 </LinearLayout>