| Index: content/public/android/java/src/org/chromium/content/browser/ViewPositionObserver.java
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| diff --git a/content/public/android/java/src/org/chromium/content/browser/ViewPositionObserver.java b/content/public/android/java/src/org/chromium/content/browser/ViewPositionObserver.java
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| deleted file mode 100644
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| index 8f55f2f252752849b10505ad214e40340afc1bd6..0000000000000000000000000000000000000000
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| --- a/content/public/android/java/src/org/chromium/content/browser/ViewPositionObserver.java
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| +++ /dev/null
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| @@ -1,103 +0,0 @@
|
| -// Copyright 2013 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.
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| -
|
| -package org.chromium.content.browser;
|
| -
|
| -import android.view.View;
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| -import android.view.ViewTreeObserver;
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| -
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| -import java.util.ArrayList;
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| -
|
| -/**
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| - * Used to register listeners that can be notified of changes to the position of a view.
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| - */
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| -public class ViewPositionObserver implements PositionObserver {
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| - private View mView;
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| - // Absolute position of the container view relative to its parent window.
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| - private final int[] mPosition = new int[2];
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| -
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| - private final ArrayList<Listener> mListeners;
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| - private ViewTreeObserver.OnPreDrawListener mPreDrawListener;
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| -
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| - /**
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| - * @param view The view to observe.
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| - */
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| - public ViewPositionObserver(View view) {
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| - mView = view;
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| - mListeners = new ArrayList<Listener>();
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| - updatePosition();
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| - mPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
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| - @Override
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| - public boolean onPreDraw() {
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| - updatePosition();
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| - return true;
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| - }
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| - };
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| - }
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| -
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| - /**
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| - * @return The current x position of the observed view.
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| - */
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| - @Override
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| - public int getPositionX() {
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| - // The stored position may be out-of-date. Get the real current position.
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| - updatePosition();
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| - return mPosition[0];
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| - }
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| -
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| - /**
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| - * @return The current y position of the observed view.
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| - */
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| - @Override
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| - public int getPositionY() {
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| - // The stored position may be out-of-date. Get the real current position.
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| - updatePosition();
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| - return mPosition[1];
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| - }
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| -
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| - /**
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| - * Register a listener to be called when the position of the underlying view changes.
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| - */
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| - @Override
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| - public void addListener(Listener listener) {
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| - if (mListeners.contains(listener)) return;
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| -
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| - if (mListeners.isEmpty()) {
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| - mView.getViewTreeObserver().addOnPreDrawListener(mPreDrawListener);
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| - updatePosition();
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| - }
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| -
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| - mListeners.add(listener);
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| - }
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| -
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| - /**
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| - * Remove a previously installed listener.
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| - */
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| - @Override
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| - public void removeListener(Listener listener) {
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| - if (!mListeners.contains(listener)) return;
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| -
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| - mListeners.remove(listener);
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| -
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| - if (mListeners.isEmpty()) {
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| - mView.getViewTreeObserver().removeOnPreDrawListener(mPreDrawListener);
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| - }
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| - }
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| -
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| - private void notifyListeners() {
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| - for (int i = 0; i < mListeners.size(); i++) {
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| - mListeners.get(i).onPositionChanged(mPosition[0], mPosition[1]);
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| - }
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| - }
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| -
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| - private void updatePosition() {
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| - int previousPositionX = mPosition[0];
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| - int previousPositionY = mPosition[1];
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| - mView.getLocationInWindow(mPosition);
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| - if (mPosition[0] != previousPositionX || mPosition[1] != previousPositionY) {
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| - notifyListeners();
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| - }
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| - }
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| -}
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| -
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|
|