Initial checkin of AOSP Messaging app.

b/23110861

Change-Id: I9aa980d7569247d6b2ca78f5dcb4502e1eaadb8a

src/com/android/messaging/ui/CustomHeaderViewPager.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.messaging.ui;
+
+import android.content.Context;
+import android.support.v4.view.PagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.support.v4.view.ViewPager.OnPageChangeListener;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.view.LayoutInflater;
+import android.widget.LinearLayout;
+
+import com.android.messaging.R;
+import com.android.messaging.util.Assert;
+
+/**
+ * A view that contains both a view pager and a tab strip wrapped in a linear layout.
+ */
+public class CustomHeaderViewPager extends LinearLayout {
+    public final static int DEFAULT_TAB_STRIP_SIZE = -1;
+    private final int mDefaultTabStripSize;
+    private ViewPager mViewPager;
+    private ViewPagerTabs mTabstrip;
+
+    public CustomHeaderViewPager(final Context context, final AttributeSet attrs) {
+        super(context, attrs);
+
+        final LayoutInflater inflater = LayoutInflater.from(context);
+        inflater.inflate(R.layout.custom_header_view_pager, this, true);
+        setOrientation(LinearLayout.VERTICAL);
+
+        mTabstrip = (ViewPagerTabs) findViewById(R.id.tab_strip);
+        mViewPager = (ViewPager) findViewById(R.id.pager);
+
+        TypedValue tv = new TypedValue();
+        context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);
+        mDefaultTabStripSize = context.getResources().getDimensionPixelSize(tv.resourceId);
+    }
+
+    public void setCurrentItem(final int position) {
+        mViewPager.setCurrentItem(position);
+    }
+
+    public void setViewPagerTabHeight(final int tabHeight) {
+        mTabstrip.getLayoutParams().height = tabHeight == DEFAULT_TAB_STRIP_SIZE ?
+                mDefaultTabStripSize : tabHeight;
+    }
+
+    public void setViewHolders(final CustomHeaderPagerViewHolder[] viewHolders) {
+        Assert.notNull(mViewPager);
+        final PagerAdapter adapter = new CustomHeaderViewPagerAdapter(viewHolders);
+        mViewPager.setAdapter(adapter);
+        mTabstrip.setViewPager(mViewPager);
+        mViewPager.setOnPageChangeListener(new OnPageChangeListener() {
+
+            @Override
+            public void onPageScrollStateChanged(int state) {
+                mTabstrip.onPageScrollStateChanged(state);
+            }
+
+            @Override
+            public void onPageScrolled(int position, float positionOffset,
+                    int positionOffsetPixels) {
+                mTabstrip.onPageScrolled(position, positionOffset, positionOffsetPixels);
+            }
+
+            @Override
+            public void onPageSelected(int position) {
+                mTabstrip.onPageSelected(position);
+            }
+        });
+    }
+
+    public int getSelectedItemPosition() {
+        return mTabstrip.getSelectedItemPosition();
+    }
+}