Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/dom_distiller/ReaderModeButtonView.java

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.dom_distiller;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.MotionEvent;
+import android.view.View;
+
+import com.google.android.apps.chrome.R;
+
+import org.chromium.chrome.browser.banners.SwipableOverlayView;
+import org.chromium.content.browser.ContentViewCore;
+
+/**
+ * Reader Mode "infobar"-style button at the bottom of the screen.
+ */
+public class ReaderModeButtonView extends SwipableOverlayView {
+    private ReaderModeButtonViewDelegate mReaderModeButtonViewDelegate;
+
+    /**
+     * Called when the user swipes the button away or clicks it.
+     */
+    public interface ReaderModeButtonViewDelegate {
+        /* Called when the user clicks on the button. */
+        void onClick();
+        /* Called when the user swipes-away the button. */
+        void onSwipeAway();
+    }
+
+    /**
+     * Creates a ReaderModeButtonView and adds it to the given ContentViewCore.
+     *
+     * @param contentViewCore    ContentViewCore for the ReaderModeButtonView.
+     * @param buttonViewDelegate A delegate for onClick/onDismiss events.
+     */
+    public static ReaderModeButtonView create(ContentViewCore contentViewCore,
+                                              ReaderModeButtonViewDelegate buttonViewDelegate) {
+        Context context = contentViewCore.getContext();
+        ReaderModeButtonView view =
+                (ReaderModeButtonView) LayoutInflater.from(context)
+                        .inflate(R.layout.reader_mode_view, null);
+        view.initialize(buttonViewDelegate);
+        view.setContentViewCore(contentViewCore);
+        view.addToParentView(contentViewCore.getContainerView());
+        return view;
+    }
+
+    /**
+     * Creates a ReaderModeButtonView.
+     *
+     * @param context Context for acquiring resources.
+     * @param attrs   Attributes from the XML layout inflation.
+     */
+    public ReaderModeButtonView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    private void initialize(ReaderModeButtonViewDelegate buttonViewDelegate) {
+        mReaderModeButtonViewDelegate = buttonViewDelegate;
+        findViewById(R.id.main_close).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mReaderModeButtonViewDelegate.onSwipeAway();
+                dismiss(true);
+            }
+        });
+        this.setClickable(true);
+    }
+
+    // Expose dismiss to other classes in this package.
+    @Override
+    protected boolean dismiss(boolean horizontally) {
+        return super.dismiss(horizontally);
+    }
+
+    @Override
+    protected void onViewClicked() {
+        mReaderModeButtonViewDelegate.onClick();
+        dismiss(true);
+    }
+
+    @Override
+    protected void onViewPressed(MotionEvent event) {
+    }
+
+    @Override
+    protected void onViewSwipedAway() {
+        mReaderModeButtonViewDelegate.onSwipeAway();
+    }
+}