Initial Release

.babelrc

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+{
+  "presets": ["react-native"]
+}

.buckconfig

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+
+[android]
+  target = Google Inc.:Google APIs:23
+
+[maven_repositories]
+  central = https://repo1.maven.org/maven2

.gitattributes

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+*.pbxproj -text

.gitignore

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+# OSX
+#
+.DS_Store
+
+# Xcode
+#
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+project.xcworkspace
+
+# Android/IntelliJ
+#
+build/
+.idea
+.gradle
+local.properties
+*.iml
+
+# node.js
+#
+node_modules/
+npm-debug.log
+yarn-error.log
+
+# BUCK
+buck-out/
+\.buckd/
+*.keystore
+
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
+# screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://github.com/fastlane/fastlane/blob/master/fastlane/docs/Gitignore.md
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots
+android/.gradle
+android/.idea
+android/app
+android/gradle/*
+android/gradlew
+android/gradlew.bat
+android/loca.properties
+android/android.iml
+android/RNCollapsibleToolbar.iml
+android/app/libs
+android/keystores/debug.keystore

.npmignore

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+example

.watchmanconfig

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+{}

android/build.gradle

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+apply plugin: "com.android.library"
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "23.0.1"
+
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+    }
+}
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.2.3'
+    }
+}
+
+allprojects {
+    repositories {
+        mavenLocal()
+        jcenter()
+        maven {
+            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
+            url "$projectDir/../example/node_modules/react-native/android"
+        }
+    }
+}
+
+dependencies {
+    // compile project(':react-native-nested-scroll-view')
+    compile 'com.facebook.react:react-native:+'
+    compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support:design:25.3.1'
+}

android/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.rncollapsingtoolbarlayout">
+</manifest>

android/src/main/java/com/rncollapsingtoolbarlayout/AppBarLayoutManager.java

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+package com.rncollapsingtoolbarlayout;
+
+import android.support.annotation.Nullable;
+import android.support.design.widget.AppBarLayout;
+
+import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.ReactContext;
+import com.facebook.react.bridge.WritableMap;
+import com.facebook.react.common.MapBuilder;
+import com.facebook.react.uimanager.PixelUtil;
+import com.facebook.react.uimanager.ViewGroupManager;
+import com.facebook.react.uimanager.ThemedReactContext;
+import com.facebook.react.uimanager.annotations.ReactProp;
+import com.facebook.react.uimanager.events.RCTEventEmitter;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class AppBarLayoutManager extends ViewGroupManager<AppBarLayoutView>
+    implements AppBarLayout.OnOffsetChangedListener  {
+
+    private final static String REACT_CLASS = "RCTAppBarLayout";
+
+    @Override
+    public String getName() {
+        return REACT_CLASS;
+    }
+
+    @Override
+    public AppBarLayoutView createViewInstance(ThemedReactContext context) {
+        AppBarLayoutView view = new AppBarLayoutView(context);
+        view.addOnOffsetChangedListener(this);
+        return view;
+    }
+
+    @ReactProp(name = "height")
+    public void setHeight(AppBarLayoutView view, int height) {
+        AppBarLayout.LayoutParams params = (AppBarLayout.LayoutParams) view.getLayoutParams();
+        params.height = (int) PixelUtil.toPixelFromDIP(height);
+        view.setLayoutParams(params);
+    }
+
+    @Override
+    public Map<String, Object> getExportedViewConstants() {
+        final Map<String, Object> constants = new HashMap<>();
+        constants.put("SCROLL_FLAG_SNAP", AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+        constants.put("SCROLL_FLAG_SCROLL", AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL);
+        constants.put("SCROLL_FLAG_ENTER_ALWAYS", AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS);
+        constants.put("SCROLL_FLAG_EXIT_UNTIL_COLLAPSED", AppBarLayout.LayoutParams.SCROLL_FLAG_EXIT_UNTIL_COLLAPSED);
+        constants.put("SCROLL_FLAG_ENTER_ALWAYS_COLLAPSED", AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS_COLLAPSED);
+        return constants;
+    }
+
+    @Nullable
+    @Override
+    public Map<String, Object> getExportedCustomBubblingEventTypeConstants() {
+        return MapBuilder.<String, Object>builder()
+            .put("topOffsetChanged",
+                MapBuilder.of(
+                    "phasedRegistrationNames",
+                    MapBuilder.of(
+                        "bubbled", "onOffsetChanged", "captured", "onOffsetChangedCapture")))
+            .build();
+    }
+
+    @Override
+    public boolean needsCustomLayoutForChildren() {
+        return true;
+    }
+
+    @Override
+    public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
+        WritableMap event = Arguments.createMap();
+        event.putDouble("offset", verticalOffset);
+        ReactContext reactContext = (ReactContext) appBarLayout.getContext();
+        reactContext.getJSModule(RCTEventEmitter.class).receiveEvent(appBarLayout.getId(), "topOffsetChanged", event);
+    }
+}

android/src/main/java/com/rncollapsingtoolbarlayout/AppBarLayoutView.java

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+package com.rncollapsingtoolbarlayout;
+
+import android.content.Context;
+import android.support.design.widget.AppBarLayout;
+import android.view.ViewGroup;
+
+public class AppBarLayoutView extends AppBarLayout {
+    public AppBarLayoutView(Context context) {
+        super(context);
+
+        int width  = ViewGroup.LayoutParams.MATCH_PARENT;
+        int height = ViewGroup.LayoutParams.WRAP_CONTENT;
+
+        AppBarLayout.LayoutParams params = new AppBarLayout.LayoutParams(width, height);
+
+        this.setLayoutParams(params);
+    }
+}

android/src/main/java/com/rncollapsingtoolbarlayout/CollapsingParallaxManager.java

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+package com.rncollapsingtoolbarlayout;
+
+import android.support.design.widget.CollapsingToolbarLayout;
+import android.widget.FrameLayout;
+
+import com.facebook.react.uimanager.ThemedReactContext;
+import com.facebook.react.uimanager.ViewGroupManager;
+import com.facebook.react.uimanager.annotations.ReactProp;
+
+public class CollapsingParallaxManager extends ViewGroupManager<FrameLayout> {
+
+    private final static String REACT_CLASS = "RCTCollapsingParallax";
+
+    @Override
+    public String getName() {
+        return REACT_CLASS;
+    }
+
+    @Override
+    public FrameLayout createViewInstance(ThemedReactContext context) {
+        FrameLayout view = new FrameLayout(context);
+        CollapsingToolbarLayout.LayoutParams params = new CollapsingToolbarLayout.LayoutParams(
+            CollapsingToolbarLayout.LayoutParams.MATCH_PARENT,
+            CollapsingToolbarLayout.LayoutParams.WRAP_CONTENT
+        );
+        params.setCollapseMode(CollapsingToolbarLayout.LayoutParams.COLLAPSE_MODE_PARALLAX);
+        view.setLayoutParams(params);
+        return view;
+    }
+
+    @ReactProp(name = "parallaxMultiplier")
+    public void setParallaxMultiplier(FrameLayout view, float multiplier) {
+        CollapsingToolbarLayout.LayoutParams params = (CollapsingToolbarLayout.LayoutParams) view.getLayoutParams();
+        params.setParallaxMultiplier(multiplier);
+        view.setLayoutParams(params);
+    }
+}