android_webview: Let AwContents manage TouchHandleDrawable

content/public/android/java/src/org/chromium/content/browser/input/PopupTouchHandleDrawable.java

Index: content/public/android/java/src/org/chromium/content/browser/input/PopupTouchHandleDrawable.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/input/PopupTouchHandleDrawable.java b/content/public/android/java/src/org/chromium/content/browser/input/PopupTouchHandleDrawable.java
deleted file mode 100644
index dce0644ca968d5776a59fb724a9aae67b72a5d2a..0000000000000000000000000000000000000000
--- a/content/public/android/java/src/org/chromium/content/browser/input/PopupTouchHandleDrawable.java
+++ /dev/null
@@ -1,518 +0,0 @@
-// Copyright 2014 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.content.browser.input;
-
-import android.annotation.SuppressLint;
-import android.content.Context;
-import android.graphics.Canvas;
-import android.graphics.drawable.Drawable;
-import android.os.Build;
-import android.os.SystemClock;
-import android.view.MotionEvent;
-import android.view.View;
-import android.view.ViewGroup;
-import android.view.WindowManager;
-import android.view.animation.AnimationUtils;
-import android.widget.PopupWindow;
-
-import org.chromium.base.annotations.CalledByNative;
-import org.chromium.base.annotations.JNINamespace;
-import org.chromium.content.browser.ContainerViewObserver;
-import org.chromium.content.browser.ContentViewCore;
-import org.chromium.content.browser.PositionObserver;
-import org.chromium.content.browser.ViewPositionObserver;
-import org.chromium.content_public.browser.GestureStateListener;
-import org.chromium.ui.touch_selection.TouchHandleOrientation;
-
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-
-/**
- * View that displays a selection or insertion handle for text editing.
- *
- * While a HandleView is logically a child of some other view, it does not exist in that View's
- * hierarchy.
- *
- */
-@JNINamespace("content")
-public class PopupTouchHandleDrawable extends View {
-    private final PopupWindow mContainer;
-    private final PositionObserver.Listener mParentPositionListener;
-    private final ContainerViewObserver mParentViewObserver;
-    private ContentViewCore mContentViewCore;
-    private PositionObserver mParentPositionObserver;
-    private Drawable mDrawable;
-
-    // The position of the handle relative to the parent view.
-    private int mPositionX;
-    private int mPositionY;
-
-    // The position of the parent relative to the application's root view.
-    private int mParentPositionX;
-    private int mParentPositionY;
-
-    // The mirror values based on which the handles are inverted about X and Y axes.
-    private boolean mMirrorHorizontal;
-    private boolean mMirrorVertical;
-
-    private float mAlpha;
-
-    private final int[] mTempScreenCoords = new int[2];
-
-    private int mOrientation = TouchHandleOrientation.UNDEFINED;
-
-    // Length of the delay before fading in after the last page movement.
-    private static final int MOVING_FADE_IN_DELAY_MS = 300;
-    private static final int FADE_IN_DURATION_MS = 200;
-    private Runnable mDeferredHandleFadeInRunnable;
-    private long mFadeStartTime;
-    private Runnable mTemporarilyHiddenExpiredRunnable;
-    private long mTemporarilyHiddenExpireTime;
-    private boolean mVisible;
-    private boolean mScrolling;
-    private boolean mFocused;
-    private boolean mTemporarilyHidden;
-    private boolean mAttachedToWindow;
-    // This should be set only from onVisibilityInputChanged.
-    private boolean mWasShowingAllowed;
-
-    // Gesture accounting for handle hiding while scrolling.
-    private final GestureStateListener mGestureStateListener;
-
-    // There are no guarantees that the side effects of setting the position of
-    // the PopupWindow and the visibility of its content View will be realized
-    // in the same frame. Thus, to ensure the PopupWindow is seen in the right
-    // location, when the PopupWindow reappears we delay the visibility update
-    // by one frame after setting the position.
-    private boolean mDelayVisibilityUpdateWAR;
-
-    // Deferred runnable to avoid invalidating outside of frame dispatch,
-    // in turn avoiding issues with sync barrier insertion.
-    private Runnable mInvalidationRunnable;
-    private boolean mHasPendingInvalidate;
-
-    private PopupTouchHandleDrawable(ContentViewCore contentViewCore) {
-        super(contentViewCore.getContainerView().getContext());
-        mContentViewCore = contentViewCore;
-        mContainer = new PopupWindow(mContentViewCore.getWindowAndroid().getContext().get(),
-                null, android.R.attr.textSelectHandleWindowStyle);
-        mContainer.setSplitTouchEnabled(true);
-        mContainer.setClippingEnabled(false);
-
-        // The built-in PopupWindow animation causes jank when transitioning between
-        // visibility states. We use a custom fade-in animation when necessary.
-        mContainer.setAnimationStyle(0);
-
-        // The SUB_PANEL window layout type improves z-ordering with respect to
-        // other popup-based elements.
-        setWindowLayoutType(mContainer, WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
-        mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
-        mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
-
-        mAlpha = 1.f;
-        mVisible = getVisibility() == VISIBLE;
-        mFocused = mContentViewCore.getContainerView().hasWindowFocus();
-
-        mParentPositionObserver = new ViewPositionObserver(mContentViewCore.getContainerView());
-        mParentPositionListener = new PositionObserver.Listener() {
-            @Override
-            public void onPositionChanged(int x, int y) {
-                updateParentPosition(x, y);
-            }
-        };
-        mParentViewObserver = new ContainerViewObserver() {
-            @Override
-            public void onContainerViewChanged(ViewGroup newContainerView) {
-                // If the parent View ever changes, the parent position observer
-                // must be updated accordingly.
-                mParentPositionObserver.clearListener();
-                mParentPositionObserver = new ViewPositionObserver(newContainerView);
-                if (mContainer.isShowing()) {
-                    mParentPositionObserver.addListener(mParentPositionListener);
-                }
-            }
-        };
-        mGestureStateListener = new GestureStateListener() {
-            @Override
-            public void onScrollStarted(int scrollOffsetX, int scrollOffsetY) {
-                setIsScrolling(true);
-            }
-            @Override
-            public void onScrollEnded(int scrollOffsetX, int scrollOffsetY) {
-                setIsScrolling(false);
-            }
-            @Override
-            public void onFlingStartGesture(int vx, int vy, int scrollOffsetY, int scrollExtentY) {
-                // Fling accounting is unreliable in WebView, as the embedder
-                // can override onScroll() and suppress fling ticking. At best
-                // we have to rely on the scroll offset changing to temporarily
-                // and repeatedly keep the handles hidden.
-                setIsScrolling(false);
-            }
-            @Override
-            public void onScrollOffsetOrExtentChanged(int scrollOffsetY, int scrollExtentY) {
-                temporarilyHide();
-            }
-            @Override
-            public void onWindowFocusChanged(boolean hasWindowFocus) {
-                setIsFocused(hasWindowFocus);
-            }
-            @Override
-            public void onDestroyed() {
-                destroy();
-            }
-        };
-        mContentViewCore.addGestureStateListener(mGestureStateListener);
-        mContentViewCore.addContainerViewObserver(mParentViewObserver);
-    }
-
-    private static void setWindowLayoutType(PopupWindow window, int layoutType) {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-            window.setWindowLayoutType(layoutType);
-            return;
-        }
-
-        try {
-            Method setWindowLayoutTypeMethod =
-                    PopupWindow.class.getMethod("setWindowLayoutType", int.class);
-            setWindowLayoutTypeMethod.invoke(window, layoutType);
-        } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException
-                | RuntimeException e) {
-        }
-    }
-
-    private static Drawable getHandleDrawable(Context context, int orientation) {
-        switch (orientation) {
-            case TouchHandleOrientation.LEFT: {
-                return HandleViewResources.getLeftHandleDrawable(context);
-            }
-
-            case TouchHandleOrientation.RIGHT: {
-                return HandleViewResources.getRightHandleDrawable(context);
-            }
-
-            case TouchHandleOrientation.CENTER: {
-                return HandleViewResources.getCenterHandleDrawable(context);
-            }
-
-            case TouchHandleOrientation.UNDEFINED:
-            default:
-                assert false;
-                return HandleViewResources.getCenterHandleDrawable(context);
-        }
-    }
-
-    @SuppressLint("ClickableViewAccessibility")
-    @Override
-    public boolean onTouchEvent(MotionEvent event) {
-        if (mContentViewCore == null) return false;
-        // Convert from PopupWindow local coordinates to
-        // parent view local coordinates prior to forwarding.
-        mContentViewCore.getContainerView().getLocationOnScreen(mTempScreenCoords);
-        final float offsetX = event.getRawX() - event.getX() - mTempScreenCoords[0];
-        final float offsetY = event.getRawY() - event.getY() - mTempScreenCoords[1];
-        final MotionEvent offsetEvent = MotionEvent.obtainNoHistory(event);
-        offsetEvent.offsetLocation(offsetX, offsetY);
-        final boolean handled = mContentViewCore.onTouchHandleEvent(offsetEvent);
-        offsetEvent.recycle();
-        return handled;
-    }
-
-    @CalledByNative
-    private static PopupTouchHandleDrawable create(ContentViewCore contentViewCore) {
-        return new PopupTouchHandleDrawable(contentViewCore);
-    }
-
-    @CalledByNative
-    private void setOrientation(int orientation, boolean mirrorVertical, boolean mirrorHorizontal) {
-        assert (orientation >= TouchHandleOrientation.LEFT
-                && orientation <= TouchHandleOrientation.UNDEFINED);
-
-        final boolean orientationChanged = mOrientation != orientation;
-        final boolean mirroringChanged =
-                mMirrorHorizontal != mirrorHorizontal || mMirrorVertical != mirrorVertical;
-        mOrientation = orientation;
-        mMirrorHorizontal = mirrorHorizontal;
-        mMirrorVertical = mirrorVertical;
-
-        // Create new InvertedDrawable only if orientation has changed.
-        // Otherwise, change the mirror values to scale canvas on draw() calls.
-        if (orientationChanged) mDrawable = getHandleDrawable(getContext(), mOrientation);
-
-        if (mDrawable != null) mDrawable.setAlpha((int) (255 * mAlpha));
-
-        if (orientationChanged || mirroringChanged) scheduleInvalidate();
-    }
-
-    private void updateParentPosition(int parentPositionX, int parentPositionY) {
-        if (mParentPositionX == parentPositionX && mParentPositionY == parentPositionY) return;
-        mParentPositionX = parentPositionX;
-        mParentPositionY = parentPositionY;
-        temporarilyHide();
-    }
-
-    private int getContainerPositionX() {
-        return mParentPositionX + mPositionX;
-    }
-
-    private int getContainerPositionY() {
-        return mParentPositionY + mPositionY;
-    }
-
-    private void updatePosition() {
-        mContainer.update(getContainerPositionX(), getContainerPositionY(),
-                getRight() - getLeft(), getBottom() - getTop());
-    }
-
-    private boolean isShowingAllowed() {
-        return mAttachedToWindow && mVisible && mFocused && !mScrolling && !mTemporarilyHidden;
-    }
-
-    private void updateVisibility() {
-        int newVisibility = isShowingAllowed() ? VISIBLE : INVISIBLE;
-
-        // When regaining visibility, delay the visibility update by one frame
-        // to ensure the PopupWindow has first been positioned properly.
-        if (newVisibility == VISIBLE && getVisibility() != VISIBLE) {
-            if (!mDelayVisibilityUpdateWAR) {
-                mDelayVisibilityUpdateWAR = true;
-                scheduleInvalidate();
-                return;
-            }
-        }
-        mDelayVisibilityUpdateWAR = false;
-
-        setVisibility(newVisibility);
-    }
-
-    private void setIsScrolling(boolean scrolling) {
-        if (mScrolling == scrolling) return;
-        mScrolling = scrolling;
-        onVisibilityInputChanged();
-    }
-
-    private void setIsFocused(boolean focused) {
-        if (mFocused == focused) return;
-        mFocused = focused;
-        onVisibilityInputChanged();
-    }
-
-    private void setTemporarilyHidden(boolean hidden) {
-        if (mTemporarilyHidden == hidden) return;
-
-        mTemporarilyHidden = hidden;
-        if (mTemporarilyHidden) {
-            if (mTemporarilyHiddenExpiredRunnable == null) {
-                mTemporarilyHiddenExpiredRunnable = new Runnable() {
-                    @Override
-                    public void run() {
-                        setTemporarilyHidden(false);
-                    }
-                };
-            }
-            removeCallbacks(mTemporarilyHiddenExpiredRunnable);
-            long now = SystemClock.uptimeMillis();
-            long delay = Math.max(0, mTemporarilyHiddenExpireTime - now);
-            postDelayed(mTemporarilyHiddenExpiredRunnable, delay);
-        } else if (mTemporarilyHiddenExpiredRunnable != null) {
-            removeCallbacks(mTemporarilyHiddenExpiredRunnable);
-        }
-        onVisibilityInputChanged();
-    }
-
-    private void onVisibilityInputChanged() {
-        if (!mContainer.isShowing()) return;
-        boolean allowed = isShowingAllowed();
-        if (mWasShowingAllowed == allowed) return;
-        mWasShowingAllowed = allowed;
-        cancelFadeIn();
-        if (allowed) {
-            if (mDeferredHandleFadeInRunnable == null) {
-                mDeferredHandleFadeInRunnable = new Runnable() {
-                    @Override
-                    public void run() {
-                        beginFadeIn();
-                    }
-                };
-            }
-            postOnAnimation(mDeferredHandleFadeInRunnable);
-        } else {
-            updateVisibility();
-        }
-    }
-
-    private void updateAlpha() {
-        if (mAlpha == 1.f) return;
-        long currentTimeMillis = AnimationUtils.currentAnimationTimeMillis();
-        mAlpha = Math.min(1.f, (float) (currentTimeMillis - mFadeStartTime) / FADE_IN_DURATION_MS);
-        mDrawable.setAlpha((int) (255 * mAlpha));
-        scheduleInvalidate();
-    }
-
-    private void temporarilyHide() {
-        if (!mContainer.isShowing()) return;
-        mTemporarilyHiddenExpireTime = SystemClock.uptimeMillis() + MOVING_FADE_IN_DELAY_MS;
-        setTemporarilyHidden(true);
-    }
-
-    private void doInvalidate() {
-        if (!mContainer.isShowing()) return;
-        updateVisibility();
-        updatePosition();
-        invalidate();
-    }
-
-    private void scheduleInvalidate() {
-        if (mInvalidationRunnable == null) {
-            mInvalidationRunnable = new Runnable() {
-                @Override
-                public void run() {
-                    mHasPendingInvalidate = false;
-                    doInvalidate();
-                }
-            };
-        }
-
-        if (mHasPendingInvalidate) return;
-        mHasPendingInvalidate = true;
-        postOnAnimation(mInvalidationRunnable);
-    }
-
-    private void cancelFadeIn() {
-        if (mDeferredHandleFadeInRunnable == null) return;
-        removeCallbacks(mDeferredHandleFadeInRunnable);
-    }
-
-    private void beginFadeIn() {
-        if (getVisibility() == VISIBLE) return;
-        mAlpha = 0.f;
-        mFadeStartTime = AnimationUtils.currentAnimationTimeMillis();
-        doInvalidate();
-    }
-
-    @Override
-    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-        if (mDrawable == null) {
-            setMeasuredDimension(0, 0);
-            return;
-        }
-        setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight());
-    }
-
-    @Override
-    protected void onDraw(Canvas c) {
-        if (mDrawable == null) return;
-        final boolean needsMirror = mMirrorHorizontal || mMirrorVertical;
-        if (needsMirror) {
-            c.save();
-            float scaleX = mMirrorHorizontal ? -1.f : 1.f;
-            float scaleY = mMirrorVertical ? -1.f : 1.f;
-            c.scale(scaleX, scaleY, getWidth() / 2.0f, getHeight() / 2.0f);
-        }
-        updateAlpha();
-        mDrawable.setBounds(0, 0, getRight() - getLeft(), getBottom() - getTop());
-        mDrawable.draw(c);
-        if (needsMirror) c.restore();
-    }
-
-    @Override
-    protected void onAttachedToWindow() {
-        super.onAttachedToWindow();
-        mAttachedToWindow = true;
-        onVisibilityInputChanged();
-    }
-
-    @Override
-    protected void onDetachedFromWindow() {
-        super.onDetachedFromWindow();
-        mAttachedToWindow = false;
-        onVisibilityInputChanged();
-    }
-
-    @CalledByNative
-    private void destroy() {
-        if (mContentViewCore == null) return;
-        hide();
-        mContentViewCore.removeGestureStateListener(mGestureStateListener);
-        mContentViewCore.removeContainerViewObserver(mParentViewObserver);
-        mContentViewCore = null;
-    }
-
-    @CalledByNative
-    private void show() {
-        if (mContentViewCore == null) return;
-        if (mContainer.isShowing()) return;
-
-        // While hidden, the parent position may have become stale. It must be updated before
-        // checking isPositionVisible().
-        updateParentPosition(mParentPositionObserver.getPositionX(),
-                mParentPositionObserver.getPositionY());
-        mParentPositionObserver.addListener(mParentPositionListener);
-        mContainer.setContentView(this);
-        try {
-            mContainer.showAtLocation(mContentViewCore.getContainerView(), 0,
-                    getContainerPositionX(), getContainerPositionY());
-        } catch (WindowManager.BadTokenException e) {
-            hide();
-        }
-    }
-
-    @CalledByNative
-    private void hide() {
-        mTemporarilyHiddenExpireTime = 0;
-        setTemporarilyHidden(false);
-        mAlpha = 1.0f;
-        if (mContainer.isShowing()) {
-            try {
-                mContainer.dismiss();
-            } catch (IllegalArgumentException e) {
-                // Intentionally swallowed due to bad Android implemention. See crbug.com/633224.
-            }
-        }
-        mParentPositionObserver.clearListener();
-    }
-
-    @CalledByNative
-    private void setOrigin(float originX, float originY) {
-        if (mPositionX == originX && mPositionY == originY) return;
-        mPositionX = (int) originX;
-        mPositionY = (int) originY;
-        if (getVisibility() == VISIBLE) scheduleInvalidate();
-    }
-
-    @CalledByNative
-    private void setVisible(boolean visible) {
-        if (mVisible == visible) return;
-        mVisible = visible;
-        onVisibilityInputChanged();
-    }
-
-    @CalledByNative
-    private int getPositionX() {
-        return mPositionX;
-    }
-
-    @CalledByNative
-    private float getHandleHorizontalPaddingRatio() {
-        return HandleViewResources.getHandleHorizontalPaddingRatio();
-    }
-
-    @CalledByNative
-    private int getPositionY() {
-        return mPositionY;
-    }
-
-    @CalledByNative
-    private int getVisibleWidth() {
-        if (mDrawable == null) return 0;
-        return mDrawable.getIntrinsicWidth();
-    }
-
-    @CalledByNative
-    private int getVisibleHeight() {
-        if (mDrawable == null) return 0;
-        return mDrawable.getIntrinsicHeight();
-    }
-}