Add support for CoordinatorLayout

library/build.gradle

@@ -25,6 +25,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
+    compile 'com.android.support:design:23.0.1'
 }
 
 apply from: '../gradle-mvn-push.gradle'

library/src/main/java/com/github/clans/fab/FloatingActionButton.java

@@ -26,6 +26,7 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.os.SystemClock;
+import android.support.design.widget.CoordinatorLayout;
 import android.util.AttributeSet;
 import android.view.GestureDetector;
 import android.view.MotionEvent;
@@ -38,6 +39,7 @@
 import android.widget.ImageButton;
 import android.widget.TextView;
 
+@CoordinatorLayout.DefaultBehavior(FloatingActionButtonBehavior.class)
 public class FloatingActionButton extends ImageButton {
 
     public static final int SIZE_NORMAL = 0;

library/src/main/java/com/github/clans/fab/FloatingActionButtonBehavior.java

@@ -0,0 +1,54 @@
+package com.github.clans.fab;
+
+import android.content.Context;
+import android.support.design.widget.AppBarLayout;
+import android.support.design.widget.CoordinatorLayout;
+import android.support.design.widget.Snackbar;
+import android.util.AttributeSet;
+import android.view.View;
+
+
+public class FloatingActionButtonBehavior extends CoordinatorLayout.Behavior<FloatingActionButton> {
+
+    private int mToolbarHeight = -1;
+
+    public FloatingActionButtonBehavior() {
+        super();
+    }
+
+    public FloatingActionButtonBehavior(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public boolean layoutDependsOn(CoordinatorLayout parent, FloatingActionButton child, View dependency) {
+        return dependency instanceof Snackbar.SnackbarLayout
+                || dependency instanceof AppBarLayout;
+    }
+
+    @Override
+    public boolean onDependentViewChanged(CoordinatorLayout parent, FloatingActionButton fab, View dependency) {
+        super.onDependentViewChanged(parent, fab, dependency);
+
+        if (mToolbarHeight == -1) {
+            mToolbarHeight = Util.getToolbarHeight(fab.getContext());
+        }
+
+        float translationY;
+        if (dependency instanceof Snackbar.SnackbarLayout) {
+            translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight());
+        } else {
+            CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) fab
+                    .getLayoutParams();
+            int famBottomMargin = lp.bottomMargin;
+            int height = fab.getHeight();
+            int distanceToScroll = height + famBottomMargin;
+            float ratio = (float) dependency.getY() / (float) mToolbarHeight;
+            translationY = - distanceToScroll * ratio;
+        }
+        fab.setTranslationY(translationY);
+
+        return true;
+    }
+
+}

library/src/main/java/com/github/clans/fab/FloatingActionMenu.java

@@ -9,6 +9,7 @@
 import android.graphics.Color;
 import android.graphics.drawable.Drawable;
 import android.os.Handler;
+import android.support.design.widget.CoordinatorLayout;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.TypedValue;
@@ -27,6 +28,7 @@
 import java.util.ArrayList;
 import java.util.List;
 
+@CoordinatorLayout.DefaultBehavior(FloatingActionMenuBehavior.class)
 public class FloatingActionMenu extends ViewGroup {
 
     private static final int ANIMATION_DURATION = 300;

library/src/main/java/com/github/clans/fab/FloatingActionMenuBehavior.java

@@ -0,0 +1,60 @@
+package com.github.clans.fab;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.support.design.widget.AppBarLayout;
+import android.support.design.widget.CoordinatorLayout;
+import android.support.design.widget.Snackbar;
+import android.util.AttributeSet;
+import android.view.View;
+
+
+public class FloatingActionMenuBehavior extends CoordinatorLayout.Behavior<FloatingActionMenu> {
+
+    private int mToolbarHeight = -1;
+
+    public FloatingActionMenuBehavior() {
+        super();
+    }
+
+    public FloatingActionMenuBehavior(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public boolean layoutDependsOn(CoordinatorLayout parent, FloatingActionMenu child, View dependency) {
+        return dependency instanceof Snackbar.SnackbarLayout
+                || dependency instanceof AppBarLayout;
+    }
+
+    @Override
+    public boolean onDependentViewChanged(CoordinatorLayout parent, FloatingActionMenu fam, View dependency) {
+        super.onDependentViewChanged(parent, fam, dependency);
+
+        if (mToolbarHeight == -1) {
+            mToolbarHeight = Util.getToolbarHeight(fam.getContext());
+        }
+
+        float translationY;
+        if (dependency instanceof Snackbar.SnackbarLayout) {
+            translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight());
+        } else {
+            CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) fam
+                    .getLayoutParams();
+            int famBottomMargin = lp.bottomMargin;
+            int height;
+            if (!fam.isOpened()) {
+                height = fam.getChildAt(0).getHeight();
+            } else {
+                height = fam.getHeight();
+            }
+            int distanceToScroll = height + famBottomMargin;
+            float ratio = (float) dependency.getY() / (float) mToolbarHeight;
+            translationY = - distanceToScroll * ratio;
+        }
+        fam.setTranslationY(translationY);
+
+        return true;
+    }
+
+}

library/src/main/java/com/github/clans/fab/Util.java

@@ -1,6 +1,7 @@
 package com.github.clans.fab;
 
 import android.content.Context;
+import android.content.res.TypedArray;
 import android.os.Build;
 
 final class Util {
@@ -20,4 +21,13 @@ static boolean hasJellyBean() {
     static boolean hasLollipop() {
         return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
     }
+
+    public static int getToolbarHeight(Context context) {
+        final TypedArray styledAttributes = context.getTheme().obtainStyledAttributes(
+                new int[]{R.attr.actionBarSize});
+        int toolbarHeight = (int) styledAttributes.getDimension(0, 0);
+        styledAttributes.recycle();
+
+        return toolbarHeight;
+    }
 }

sample/build.gradle

@@ -30,5 +30,6 @@ dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile 'com.android.support:appcompat-v7:23.0.1'
     compile 'com.android.support:recyclerview-v7:23.0.1'
+    compile 'com.android.support:design:23.0.1'
     compile project(':library')
 }

sample/src/main/AndroidManifest.xml

@@ -22,6 +22,10 @@
         <activity
             android:label="@string/recyclerview_fab_example"
             android:name="com.github.clans.fab.sample.RecyclerViewActivity" />
+        <activity android:name="com.github.clans.fab.sample.CoordinatorLayoutActivity"
+                  android:label="@string/coordinatorlayout_example"
+                  android:theme="@style/AppTheme.NoActionBar" >
+        </activity>
     </application>
 
 </manifest>

sample/src/main/java/com/github/clans/fab/sample/CoordinatorLayoutActivity.java

@@ -0,0 +1,43 @@
+package com.github.clans.fab.sample;
+
+import com.github.fab.sample.R;
+
+import android.os.Bundle;
+import android.support.design.widget.Snackbar;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.support.v7.widget.Toolbar;
+import android.view.View;
+
+import java.util.Locale;
+
+public class CoordinatorLayoutActivity extends AppCompatActivity implements View.OnClickListener {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.coordinatorlayout_activity);
+
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        findViewById(R.id.fab).setOnClickListener(this);
+        findViewById(R.id.fab1).setOnClickListener(this);
+        findViewById(R.id.fab2).setOnClickListener(this);
+        findViewById(R.id.fab3).setOnClickListener(this);
+
+        Locale[] availableLocales = Locale.getAvailableLocales();
+
+        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
+        recyclerView.setHasFixedSize(true);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setAdapter(new LanguageAdapter(availableLocales));
+    }
+
+    @Override
+    public void onClick(View v) {
+        Snackbar.make(v, R.string.lorem_ipsum, Snackbar.LENGTH_SHORT).show();
+    }
+
+}

sample/src/main/java/com/github/clans/fab/sample/LanguageAdapter.java

@@ -0,0 +1,45 @@
+package com.github.clans.fab.sample;
+
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import java.util.Locale;
+
+class LanguageAdapter extends RecyclerView.Adapter<LanguageAdapter.ViewHolder> {
+
+    private Locale[] mLocales;
+
+    LanguageAdapter(Locale[] mLocales) {
+        this.mLocales = mLocales;
+    }
+
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        TextView tv = (TextView) LayoutInflater.from(parent.getContext())
+                .inflate(android.R.layout.simple_list_item_1, parent, false);
+
+        return new ViewHolder(tv);
+    }
+
+    @Override
+    public void onBindViewHolder(LanguageAdapter.ViewHolder holder, int position) {
+        holder.mTextView.setText(mLocales[position].getDisplayName());
+    }
+
+    @Override
+    public int getItemCount() {
+        return mLocales.length;
+    }
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+
+        public TextView mTextView;
+
+        public ViewHolder(TextView v) {
+            super(v);
+            mTextView = v;
+        }
+    }
+}

sample/src/main/java/com/github/clans/fab/sample/MainActivity.java

@@ -70,5 +70,12 @@ public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCoun
                 mPreviousVisibleItem = firstVisibleItem;
             }
         });
+
+        findViewById(R.id.fab_edit).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(MainActivity.this, CoordinatorLayoutActivity.class));
+            }
+        });
     }
 }

sample/src/main/java/com/github/clans/fab/sample/RecyclerViewActivity.java

@@ -115,43 +115,6 @@ public void run() {
         }
     }
 
-    private class LanguageAdapter extends RecyclerView.Adapter<ViewHolder> {
-
-        private Locale[] mLocales;
-
-        private LanguageAdapter(Locale[] mLocales) {
-            this.mLocales = mLocales;
-        }
-
-        @Override
-        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-            TextView tv = (TextView) LayoutInflater.from(parent.getContext())
-                    .inflate(android.R.layout.simple_list_item_1, parent, false);
-
-            return new ViewHolder(tv);
-        }
-
-        @Override
-        public void onBindViewHolder(ViewHolder holder, int position) {
-            holder.mTextView.setText(mLocales[position].getDisplayName());
-        }
-
-        @Override
-        public int getItemCount() {
-            return mLocales.length;
-        }
-    }
-
-    private static class ViewHolder extends RecyclerView.ViewHolder {
-
-        public TextView mTextView;
-
-        public ViewHolder(TextView v) {
-            super(v);
-            mTextView = v;
-        }
-    }
-
     private enum ProgressType {
         INDETERMINATE, PROGRESS_POSITIVE, PROGRESS_NEGATIVE, HIDDEN, PROGRESS_NO_ANIMATION, PROGRESS_NO_BACKGROUND
     }