Remove OverlappingPaneLayout.
- Remove the OverlappingPaneLayout, which is no longer needed
since the recents card has been removed.
- Known Issue: SearchBar is no longer hidden on scroll.
- Known Issue: shouldShowActionBar does not return correct value.
I plan to fix these KIs in a follow up CL, but going for incremental
changes for now to try to keep it apparent what is being done.
Bug: 19372817
Change-Id: I9ae1ca19820c87f252863074a5bcab6923b03558
diff --git a/res/layout/lists_fragment.xml b/res/layout/lists_fragment.xml
index 26f62c7..98a1422 100644
--- a/res/layout/lists_fragment.xml
+++ b/res/layout/lists_fragment.xml
@@ -14,84 +14,79 @@
limitations under the License.
-->
-<com.android.dialer.widget.OverlappingPaneLayout
+<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/lists_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true" >
- <!-- TODO: Apply background color to ActionBar instead of a FrameLayout. For now, this is the
- easiest way to preserve correct pane scrolling and searchbar collapse/expand behaviors. -->
- <FrameLayout
+ <LinearLayout
android:layout_width="match_parent"
- android:layout_height="@dimen/action_bar_height_large"
- android:background="@color/actionbar_background_color" />
+ android:layout_height="match_parent"
+ android:orientation="vertical">
- <FrameLayout
+ <!-- TODO: Apply background color to ActionBar instead of a FrameLayout. For now, this is
+ the easiest way to preserve correct pane scrolling and searchbar collapse/expand
+ behaviors. -->
+ <FrameLayout
+ android:layout_width="match_parent"
+ android:layout_height="@dimen/action_bar_height_large"
+ android:background="@color/actionbar_background_color" />
+
+ <com.android.contacts.common.list.ViewPagerTabs
+ android:id="@+id/lists_pager_header"
+ android:layout_width="match_parent"
+ android:layout_height="@dimen/tab_height"
+ android:textAllCaps="true"
+ android:orientation="horizontal"
+ android:layout_gravity="top"
+ android:elevation="@dimen/tab_elevation"
+ style="@style/DialtactsActionBarTabTextStyle" />
+
+ <android.support.v4.view.ViewPager
+ android:id="@+id/lists_pager"
+ android:layout_width="match_parent"
+ android:layout_height="0dp"
+ android:layout_weight="1" />
+
+ </LinearLayout>
+
+ <com.android.dialer.list.RemoveView
+ android:id="@+id/remove_view"
android:layout_width="match_parent"
- android:layout_height="match_parent">
+ android:layout_height="@dimen/tab_height"
+ android:layout_alignParentTop="true" >
<LinearLayout
- android:layout_width="match_parent"
+ android:id="@+id/remove_view_content"
android:layout_height="match_parent"
- android:orientation="vertical">
+ android:layout_width="match_parent"
+ android:background="@color/actionbar_background_color"
+ android:gravity="center"
+ android:orientation="horizontal"
+ android:visibility="gone" >
- <com.android.contacts.common.list.ViewPagerTabs
- android:id="@+id/lists_pager_header"
- android:layout_width="match_parent"
- android:layout_height="@dimen/tab_height"
- android:textAllCaps="true"
- android:orientation="horizontal"
- android:layout_gravity="top"
- android:elevation="@dimen/tab_elevation"
- style="@style/DialtactsActionBarTabTextStyle" />
+ <ImageView
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_marginTop="8dp"
+ android:layout_marginBottom="8dp"
+ android:id="@+id/remove_view_icon"
+ android:src="@drawable/ic_remove"
+ android:contentDescription="@string/remove_contact"
+ android:tint="@color/remove_text_color" />
- <android.support.v4.view.ViewPager
- android:id="@+id/lists_pager"
- android:layout_width="match_parent"
- android:layout_height="0dp"
- android:layout_weight="1" />
+ <TextView
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:id="@+id/remove_view_text"
+ android:textSize="@dimen/remove_text_size"
+ android:textColor="@color/remove_text_color"
+ android:text="@string/remove_contact" />
</LinearLayout>
- <com.android.dialer.list.RemoveView
- android:id="@+id/remove_view"
- android:layout_width="match_parent"
- android:layout_height="@dimen/tab_height"
- android:layout_alignParentTop="true" >
+ </com.android.dialer.list.RemoveView >
- <LinearLayout
- android:id="@+id/remove_view_content"
- android:layout_height="match_parent"
- android:layout_width="match_parent"
- android:background="@color/actionbar_background_color"
- android:gravity="center"
- android:orientation="horizontal"
- android:visibility="gone" >
-
- <ImageView
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_marginTop="8dp"
- android:layout_marginBottom="8dp"
- android:id="@+id/remove_view_icon"
- android:src="@drawable/ic_remove"
- android:contentDescription="@string/remove_contact"
- android:tint="@color/remove_text_color" />
-
- <TextView
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:id="@+id/remove_view_text"
- android:textSize="@dimen/remove_text_size"
- android:textColor="@color/remove_text_color"
- android:text="@string/remove_contact" />
-
- </LinearLayout>
-
- </com.android.dialer.list.RemoveView >
-
- </FrameLayout>
-
-</com.android.dialer.widget.OverlappingPaneLayout>
+</FrameLayout>
diff --git a/src/com/android/dialer/DialtactsActivity.java b/src/com/android/dialer/DialtactsActivity.java
index 7da13f3..61aeed5 100644
--- a/src/com/android/dialer/DialtactsActivity.java
+++ b/src/com/android/dialer/DialtactsActivity.java
@@ -1113,9 +1113,6 @@
*/
@Override
public void onDragStarted(int x, int y, PhoneFavoriteSquareTileView view) {
- if (mListsFragment.isPaneOpen()) {
- mActionBarController.setAlpha(ListsFragment.REMOVE_VIEW_SHOWN_ALPHA);
- }
mListsFragment.showRemoveView(true);
}
@@ -1128,9 +1125,6 @@
*/
@Override
public void onDragFinished(int x, int y) {
- if (mListsFragment.isPaneOpen()) {
- mActionBarController.setAlpha(ListsFragment.REMOVE_VIEW_HIDDEN_ALPHA);
- }
mListsFragment.showRemoveView(false);
}
diff --git a/src/com/android/dialer/list/ListsFragment.java b/src/com/android/dialer/list/ListsFragment.java
index 098b647..45b2f68 100644
--- a/src/com/android/dialer/list/ListsFragment.java
+++ b/src/com/android/dialer/list/ListsFragment.java
@@ -31,8 +31,6 @@
import com.android.dialer.calllog.ContactInfoHelper;
import com.android.dialer.util.DialerUtils;
import com.android.dialer.widget.ActionBarController;
-import com.android.dialer.widget.OverlappingPaneLayout;
-import com.android.dialer.widget.OverlappingPaneLayout.PanelSlideCallbacks;
import com.android.dialerbind.ObjectFactory;
import java.util.ArrayList;
@@ -64,9 +62,6 @@
private static final String KEY_LAST_DISMISSED_CALL_SHORTCUT_DATE =
"key_last_dismissed_call_shortcut_date";
- public static final float REMOVE_VIEW_SHOWN_ALPHA = 0.5f;
- public static final float REMOVE_VIEW_HIDDEN_ALPHA = 1;
-
public interface HostInterface {
public void showCallHistory();
public ActionBarController getActionBarController();
@@ -88,9 +83,6 @@
private CallLogAdapter mCallLogAdapter;
private CallLogQueryHandler mCallLogQueryHandler;
- private OverlappingPaneLayout mOverlappingPaneLayout;
-
- private boolean mIsPanelOpen = true;
/**
* Call shortcuts older than this date (persisted in shared preferences) will not show up in
@@ -103,64 +95,6 @@
*/
private long mCurrentCallShortcutDate = 0;
- private PanelSlideCallbacks mPanelSlideCallbacks = new PanelSlideCallbacks() {
- @Override
- public void onPanelSlide(View panel, float slideOffset) {
- if (mActionBar != null) {
- ActionBarController controller =
- ((HostInterface) getActivity()).getActionBarController();
- controller.setHideOffset((int) (mActionBar.getHeight() * (1 - slideOffset)));
-
- if (!mActionBar.isShowing()) {
- mActionBar.show();
- }
- }
- }
-
- @Override
- public void onPanelOpened(View panel) {
- if (DEBUG) {
- Log.d(TAG, "onPanelOpened");
- }
- mIsPanelOpen = true;
- }
-
- @Override
- public void onPanelClosed(View panel) {
- if (DEBUG) {
- Log.d(TAG, "onPanelClosed");
- }
- mIsPanelOpen = false;
- }
-
- @Override
- public void onPanelFlingReachesEdge(int velocityY) {
- if (getCurrentListView() != null) {
- getCurrentListView().fling(velocityY);
- }
- }
-
- @Override
- public boolean isScrollableChildUnscrolled() {
- final AbsListView listView = getCurrentListView();
- return listView != null && (listView.getChildCount() == 0
- || listView.getChildAt(0).getTop() == listView.getPaddingTop());
- }
- };
-
- private AbsListView getCurrentListView() {
- final int position = mViewPager.getCurrentItem();
- switch (getRtlPosition(position)) {
- case TAB_INDEX_SPEED_DIAL:
- return mSpeedDialFragment == null ? null : mSpeedDialFragment.getListView();
- case TAB_INDEX_RECENTS:
- return mRecentsFragment == null ? null : mRecentsFragment.getListView();
- case TAB_INDEX_ALL_CONTACTS:
- return mAllContactsFragment == null ? null : mAllContactsFragment.getListView();
- }
- throw new IllegalStateException("No fragment at position " + position);
- }
-
public class ViewPagerAdapter extends FragmentPagerAdapter {
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
@@ -293,8 +227,6 @@
mRemoveView = (RemoveView) parentView.findViewById(R.id.remove_view);
mRemoveViewContent = parentView.findViewById(R.id.remove_view_content);
- setupPaneLayout((OverlappingPaneLayout) parentView);
- mOverlappingPaneLayout = (OverlappingPaneLayout) parentView;
Trace.endSection();
Trace.endSection();
return parentView;
@@ -316,10 +248,6 @@
mCallLogAdapter.changeCursor(cursor);
- // Refresh the overlapping pane to ensure that any changes in the shortcut card height
- // are appropriately reflected in the overlap position.
- mOverlappingPaneLayout.refresh();
-
// Return true; took ownership of cursor
return true;
}
@@ -368,21 +296,8 @@
}
public boolean shouldShowActionBar() {
- return mIsPanelOpen && mActionBar != null;
- }
-
- public boolean isPaneOpen() {
- return mIsPanelOpen;
- }
-
- private void setupPaneLayout(OverlappingPaneLayout paneLayout) {
- // TODO: Remove the notion of a capturable view. The entire view be slideable, once
- // the framework better supports nested scrolling.
- paneLayout.setCapturableView(mViewPagerTabs);
- paneLayout.openPane();
- paneLayout.setPanelSlideCallbacks(mPanelSlideCallbacks);
- paneLayout.setIntermediatePinnedOffset(
- ((HostInterface) getActivity()).getActionBarController().getActionBarHeight());
+ // TODO: Update this based on scroll state.
+ return mActionBar != null;
}
public SpeedDialFragment getSpeedDialFragment() {
diff --git a/src/com/android/dialer/widget/OverlappingPaneLayout.java b/src/com/android/dialer/widget/OverlappingPaneLayout.java
deleted file mode 100644
index 167b849..0000000
--- a/src/com/android/dialer/widget/OverlappingPaneLayout.java
+++ /dev/null
@@ -1,1358 +0,0 @@
-/*
- * Copyright (C) 2012 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.dialer.widget;
-
-import android.content.Context;
-import android.content.res.TypedArray;
-import android.graphics.Canvas;
-import android.graphics.PixelFormat;
-import android.graphics.Rect;
-import android.graphics.drawable.Drawable;
-import android.os.Build;
-import android.os.Parcel;
-import android.os.Parcelable;
-import android.support.v4.view.AccessibilityDelegateCompat;
-import android.support.v4.view.MotionEventCompat;
-import android.support.v4.view.ViewCompat;
-import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.view.MotionEvent;
-import android.view.View;
-import android.view.ViewConfiguration;
-import android.view.ViewGroup;
-import android.view.ViewParent;
-import android.view.accessibility.AccessibilityEvent;
-
-/**
- * A custom layout that aligns its child views vertically as two panes, and allows for the bottom
- * pane to be dragged upwards to overlap and hide the top pane. This layout is adapted from
- * {@link android.support.v4.widget.SlidingPaneLayout}.
- */
-public class OverlappingPaneLayout extends ViewGroup {
- private static final String TAG = "SlidingPaneLayout";
- private static final boolean DEBUG = false;
-
- /**
- * Default size of the overhang for a pane in the open state.
- * At least this much of a sliding pane will remain visible.
- * This indicates that there is more content available and provides
- * a "physical" edge to grab to pull it closed.
- */
- private static final int DEFAULT_OVERHANG_SIZE = 32; // dp;
-
- /**
- * If no fade color is given by default it will fade to 80% gray.
- */
- private static final int DEFAULT_FADE_COLOR = 0xcccccccc;
-
- /**
- * Minimum velocity that will be detected as a fling
- */
- private static final int MIN_FLING_VELOCITY = 400; // dips per second
-
- /**
- * The size of the overhang in pixels.
- * This is the minimum section of the sliding panel that will
- * be visible in the open state to allow for a closing drag.
- */
- private final int mOverhangSize;
-
- /**
- * True if a panel can slide with the current measurements
- */
- private boolean mCanSlide;
-
- /**
- * The child view that can slide, if any.
- */
- private View mSlideableView;
-
- /**
- * The view that can be used to start the drag with.
- */
- private View mCapturableView;
-
- /**
- * How far the panel is offset from its closed position.
- * range [0, 1] where 0 = closed, 1 = open.
- */
- private float mSlideOffset;
-
- /**
- * How far the panel is offset from its closed position, in pixels.
- * range [0, {@link #mSlideRange}] where 0 is completely closed.
- */
- private int mSlideOffsetPx;
-
- /**
- * How far in pixels the slideable panel may move.
- */
- private int mSlideRange;
-
- /**
- * A panel view is locked into internal scrolling or another condition that
- * is preventing a drag.
- */
- private boolean mIsUnableToDrag;
-
- /**
- * Tracks whether or not a child view is in the process of a nested scroll.
- */
- private boolean mIsInNestedScroll;
-
- /**
- * Indicates that the layout is currently in the process of a nested pre-scroll operation where
- * the child scrolling view is being dragged downwards.
- */
- private boolean mInNestedPreScrollDownwards;
-
- /**
- * Indicates that the layout is currently in the process of a nested pre-scroll operation where
- * the child scrolling view is being dragged upwards.
- */
- private boolean mInNestedPreScrollUpwards;
-
- /**
- * Indicates that the layout is currently in the process of a fling initiated by a pre-fling
- * from the child scrolling view.
- */
- private boolean mIsInNestedFling;
-
- /**
- * Indicates the direction of the pre fling. We need to store this information since
- * OverScoller doesn't expose the direction of its velocity.
- */
- private boolean mInUpwardsPreFling;
-
- /**
- * Stores an offset used to represent a point somewhere in between the panel's fully closed
- * state and fully opened state where the panel can be temporarily pinned or opened up to
- * during scrolling.
- */
- private int mIntermediateOffset = 0;
-
- private float mInitialMotionX;
- private float mInitialMotionY;
-
- private PanelSlideCallbacks mPanelSlideCallbacks;
-
- private final ViewDragHelper mDragHelper;
-
- /**
- * Stores whether or not the pane was open the last time it was slideable.
- * If open/close operations are invoked this state is modified. Used by
- * instance state save/restore.
- */
- private boolean mPreservedOpenState;
- private boolean mFirstLayout = true;
-
- private final Rect mTmpRect = new Rect();
-
- /**
- * How many dips we need to scroll past a position before we can snap to the next position
- * on release. Using this prevents accidentally snapping to positions.
- *
- * This is needed since vertical nested scrolling can be passed to this class even if the
- * vertical scroll is less than the the nested list's touch slop.
- */
- private final int mReleaseScrollSlop;
-
- /**
- * Callbacks for interacting with sliding panes.
- */
- public interface PanelSlideCallbacks {
- /**
- * Called when a sliding pane's position changes.
- * @param panel The child view that was moved
- * @param slideOffset The new offset of this sliding pane within its range, from 0-1
- */
- public void onPanelSlide(View panel, float slideOffset);
- /**
- * Called when a sliding pane becomes slid completely open. The pane may or may not
- * be interactive at this point depending on how much of the pane is visible.
- * @param panel The child view that was slid to an open position, revealing other panes
- */
- public void onPanelOpened(View panel);
-
- /**
- * Called when a sliding pane becomes slid completely closed. The pane is now guaranteed
- * to be interactive. It may now obscure other views in the layout.
- * @param panel The child view that was slid to a closed position
- */
- public void onPanelClosed(View panel);
-
- /**
- * Called when a sliding pane is flung as far open/closed as it can be.
- * @param velocityY Velocity of the panel once its fling goes as far as it can.
- */
- public void onPanelFlingReachesEdge(int velocityY);
-
- /**
- * Returns true if the second panel's contents haven't been scrolled at all. This value is
- * used to determine whether or not we can fully expand the header on downwards scrolls.
- *
- * Instead of using this callback, it would be preferable to instead fully expand the header
- * on a View#onNestedFlingOver() callback. The behavior would be nicer. Unfortunately,
- * no such callback exists yet (b/17547693).
- */
- public boolean isScrollableChildUnscrolled();
- }
-
- public OverlappingPaneLayout(Context context) {
- this(context, null);
- }
-
- public OverlappingPaneLayout(Context context, AttributeSet attrs) {
- this(context, attrs, 0);
- }
-
- public OverlappingPaneLayout(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
-
- final float density = context.getResources().getDisplayMetrics().density;
- mOverhangSize = (int) (DEFAULT_OVERHANG_SIZE * density + 0.5f);
-
- setWillNotDraw(false);
-
- ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegate());
-
- mDragHelper = ViewDragHelper.create(this, 0.5f, new DragHelperCallback());
- mDragHelper.setMinVelocity(MIN_FLING_VELOCITY * density);
-
- mReleaseScrollSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
- }
-
- /**
- * Set an offset, somewhere in between the panel's fully closed state and fully opened state,
- * where the panel can be temporarily pinned or opened up to.
- *
- * @param offset Offset in pixels
- */
- public void setIntermediatePinnedOffset(int offset) {
- mIntermediateOffset = offset;
- }
-
- /**
- * Set the view that can be used to start dragging the sliding pane.
- */
- public void setCapturableView(View capturableView) {
- mCapturableView = capturableView;
- }
-
- public void setPanelSlideCallbacks(PanelSlideCallbacks listener) {
- mPanelSlideCallbacks = listener;
- }
-
- void dispatchOnPanelSlide(View panel) {
- mPanelSlideCallbacks.onPanelSlide(panel, mSlideOffset);
- }
-
- void dispatchOnPanelOpened(View panel) {
- mPanelSlideCallbacks.onPanelOpened(panel);
- sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
- }
-
- void dispatchOnPanelClosed(View panel) {
- mPanelSlideCallbacks.onPanelClosed(panel);
- sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
- }
-
- void updateObscuredViewsVisibility(View panel) {
- final int startBound = getPaddingTop();
- final int endBound = getHeight() - getPaddingBottom();
-
- final int leftBound = getPaddingLeft();
- final int rightBound = getWidth() - getPaddingRight();
- final int left;
- final int right;
- final int top;
- final int bottom;
- if (panel != null && viewIsOpaque(panel)) {
- left = panel.getLeft();
- right = panel.getRight();
- top = panel.getTop();
- bottom = panel.getBottom();
- } else {
- left = right = top = bottom = 0;
- }
-
- for (int i = 0, childCount = getChildCount(); i < childCount; i++) {
- final View child = getChildAt(i);
-
- if (child == panel) {
- // There are still more children above the panel but they won't be affected.
- break;
- }
-
- final int clampedChildLeft = Math.max(leftBound, child.getLeft());
- final int clampedChildRight = Math.min(rightBound, child.getRight());
- final int clampedChildTop = Math.max(startBound, child.getTop());
- final int clampedChildBottom = Math.min(endBound, child.getBottom());
-
- final int vis;
- if (clampedChildLeft >= left && clampedChildTop >= top &&
- clampedChildRight <= right && clampedChildBottom <= bottom) {
- vis = INVISIBLE;
- } else {
- vis = VISIBLE;
- }
- child.setVisibility(vis);
- }
- }
-
- void setAllChildrenVisible() {
- for (int i = 0, childCount = getChildCount(); i < childCount; i++) {
- final View child = getChildAt(i);
- if (child.getVisibility() == INVISIBLE) {
- child.setVisibility(VISIBLE);
- }
- }
- }
-
- private static boolean viewIsOpaque(View v) {
- if (ViewCompat.isOpaque(v)) return true;
-
- final Drawable bg = v.getBackground();
- if (bg != null) {
- return bg.getOpacity() == PixelFormat.OPAQUE;
- }
- return false;
- }
-
- @Override
- protected void onAttachedToWindow() {
- super.onAttachedToWindow();
- mFirstLayout = true;
- }
-
- @Override
- protected void onDetachedFromWindow() {
- super.onDetachedFromWindow();
- mFirstLayout = true;
- }
-
- @Override
- protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-
- int widthMode = MeasureSpec.getMode(widthMeasureSpec);
- int widthSize = MeasureSpec.getSize(widthMeasureSpec);
- int heightMode = MeasureSpec.getMode(heightMeasureSpec);
- int heightSize = MeasureSpec.getSize(heightMeasureSpec);
-
- if (widthMode != MeasureSpec.EXACTLY) {
- if (isInEditMode()) {
- // Don't crash the layout editor. Consume all of the space if specified
- // or pick a magic number from thin air otherwise.
- // TODO Better communication with tools of this bogus state.
- // It will crash on a real device.
- if (widthMode == MeasureSpec.AT_MOST) {
- widthMode = MeasureSpec.EXACTLY;
- } else if (widthMode == MeasureSpec.UNSPECIFIED) {
- widthMode = MeasureSpec.EXACTLY;
- widthSize = 300;
- }
- } else {
- throw new IllegalStateException("Width must have an exact value or MATCH_PARENT");
- }
- } else if (heightMode == MeasureSpec.UNSPECIFIED) {
- if (isInEditMode()) {
- // Don't crash the layout editor. Pick a magic number from thin air instead.
- // TODO Better communication with tools of this bogus state.
- // It will crash on a real device.
- if (heightMode == MeasureSpec.UNSPECIFIED) {
- heightMode = MeasureSpec.AT_MOST;
- heightSize = 300;
- }
- } else {
- throw new IllegalStateException("Height must not be UNSPECIFIED");
- }
- }
-
- int layoutWidth = 0;
- int maxLayoutWidth = -1;
- switch (widthMode) {
- case MeasureSpec.EXACTLY:
- layoutWidth = maxLayoutWidth = widthSize - getPaddingLeft() - getPaddingRight();
- break;
- case MeasureSpec.AT_MOST:
- maxLayoutWidth = widthSize - getPaddingLeft() - getPaddingRight();
- break;
- }
-
- float weightSum = 0;
- boolean canSlide = false;
- final int heightAvailable = heightSize - getPaddingTop() - getPaddingBottom();
- int heightRemaining = heightAvailable;
- final int childCount = getChildCount();
-
- if (childCount > 2) {
- Log.e(TAG, "onMeasure: More than two child views are not supported.");
- }
-
- // We'll find the current one below.
- mSlideableView = null;
-
- // First pass. Measure based on child LayoutParams width/height.
- // Weight will incur a second pass.
- for (int i = 0; i < childCount; i++) {
- final View child = getChildAt(i);
- final LayoutParams lp = (LayoutParams) child.getLayoutParams();
-
- if (child.getVisibility() == GONE) {
- continue;
- }
-
- if (lp.weight > 0) {
- weightSum += lp.weight;
-
- // If we have no height, weight is the only contributor to the final size.
- // Measure this view on the weight pass only.
- if (lp.height == 0) continue;
- }
-
- int childHeightSpec;
- final int verticalMargin = lp.topMargin + lp.bottomMargin;
- if (lp.height == LayoutParams.WRAP_CONTENT) {
- childHeightSpec = MeasureSpec.makeMeasureSpec(heightAvailable - verticalMargin,
- MeasureSpec.AT_MOST);
- } else if (lp.height == LayoutParams.MATCH_PARENT) {
- childHeightSpec = MeasureSpec.makeMeasureSpec(heightAvailable - verticalMargin,
- MeasureSpec.EXACTLY);
- } else {
- childHeightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
- }
-
- int childWidthSpec;
- if (lp.width == LayoutParams.WRAP_CONTENT) {
- childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth, MeasureSpec.AT_MOST);
- } else if (lp.width == LayoutParams.MATCH_PARENT) {
- childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth, MeasureSpec.EXACTLY);
- } else {
- childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY);
- }
-
- child.measure(childWidthSpec, childHeightSpec);
- final int childWidth = child.getMeasuredWidth();
- final int childHeight = child.getMeasuredHeight();
-
- if (widthMode == MeasureSpec.AT_MOST && childWidth > layoutWidth) {
- layoutWidth = Math.min(childWidth, maxLayoutWidth);
- }
-
- heightRemaining -= childHeight;
- canSlide |= lp.slideable = heightRemaining < 0;
- if (lp.slideable) {
- mSlideableView = child;
- }
- }
-
- // Resolve weight and make sure non-sliding panels are smaller than the full screen.
- if (canSlide || weightSum > 0) {
- final int fixedPanelHeightLimit = heightAvailable - mOverhangSize;
-
- for (int i = 0; i < childCount; i++) {
- final View child = getChildAt(i);
-
- if (child.getVisibility() == GONE) {
- continue;
- }
-
- final LayoutParams lp = (LayoutParams) child.getLayoutParams();
-
- if (child.getVisibility() == GONE) {
- continue;
- }
-
- final boolean skippedFirstPass = lp.height == 0 && lp.weight > 0;
- final int measuredHeight = skippedFirstPass ? 0 : child.getMeasuredHeight();
- if (canSlide && child != mSlideableView) {
- if (lp.height < 0 && (measuredHeight > fixedPanelHeightLimit || lp.weight > 0)) {
- // Fixed panels in a sliding configuration should
- // be clamped to the fixed panel limit.
- final int childWidthSpec;
- if (skippedFirstPass) {
- // Do initial width measurement if we skipped measuring this view
- // the first time around.
- if (lp.width == LayoutParams.WRAP_CONTENT) {
- childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth,
- MeasureSpec.AT_MOST);
- } else if (lp.height == LayoutParams.MATCH_PARENT) {
- childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth,
- MeasureSpec.EXACTLY);
- } else {
- childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width,
- MeasureSpec.EXACTLY);
- }
- } else {
- childWidthSpec = MeasureSpec.makeMeasureSpec(
- child.getMeasuredWidth(), MeasureSpec.EXACTLY);
- }
- final int childHeightSpec = MeasureSpec.makeMeasureSpec(
- fixedPanelHeightLimit, MeasureSpec.EXACTLY);
- child.measure(childWidthSpec, childHeightSpec);
- }
- } else if (lp.weight > 0) {
- int childWidthSpec;
- if (lp.height == 0) {
- // This was skipped the first time; figure out a real width spec.
- if (lp.width == LayoutParams.WRAP_CONTENT) {
- childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth,
- MeasureSpec.AT_MOST);
- } else if (lp.width == LayoutParams.MATCH_PARENT) {
- childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth,
- MeasureSpec.EXACTLY);
- } else {
- childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width,
- MeasureSpec.EXACTLY);
- }
- } else {
- childWidthSpec = MeasureSpec.makeMeasureSpec(
- child.getMeasuredWidth(), MeasureSpec.EXACTLY);
- }
-
- if (canSlide) {
- // Consume available space
- final int verticalMargin = lp.topMargin + lp.bottomMargin;
- final int newHeight = heightAvailable - verticalMargin;
- final int childHeightSpec = MeasureSpec.makeMeasureSpec(
- newHeight, MeasureSpec.EXACTLY);
- if (measuredHeight != newHeight) {
- child.measure(childWidthSpec, childHeightSpec);
- }
- } else {
- // Distribute the extra width proportionally similar to LinearLayout
- final int heightToDistribute = Math.max(0, heightRemaining);
- final int addedHeight = (int) (lp.weight * heightToDistribute / weightSum);
- final int childHeightSpec = MeasureSpec.makeMeasureSpec(
- measuredHeight + addedHeight, MeasureSpec.EXACTLY);
- child.measure(childWidthSpec, childHeightSpec);
- }
- }
- }
- }
-
- final int measuredHeight = heightSize;
- final int measuredWidth = layoutWidth + getPaddingLeft() + getPaddingRight();
-
- setMeasuredDimension(measuredWidth, measuredHeight);
- mCanSlide = canSlide;
-
- if (mDragHelper.getViewDragState() != ViewDragHelper.STATE_IDLE && !canSlide) {
- // Cancel scrolling in progress, it's no longer relevant.
- mDragHelper.abort();
- }
- }
-
- @Override
- protected void onLayout(boolean changed, int l, int t, int r, int b) {
- mDragHelper.setEdgeTrackingEnabled(ViewDragHelper.EDGE_TOP);
-
- final int height = b - t;
- final int paddingTop = getPaddingTop();
- final int paddingBottom = getPaddingBottom();
- final int paddingLeft = getPaddingLeft();
-
- final int childCount = getChildCount();
- int yStart = paddingTop;
- int nextYStart = yStart;
-
- if (mFirstLayout) {
- mSlideOffset = mCanSlide && mPreservedOpenState ? 1.f : 0.f;
- }
-
- for (int i = 0; i < childCount; i++) {
- final View child = getChildAt(i);
-
- if (child.getVisibility() == GONE) {
- continue;
- }
-
- final LayoutParams lp = (LayoutParams) child.getLayoutParams();
-
- final int childHeight = child.getMeasuredHeight();
-
- if (lp.slideable) {
- final int margin = lp.topMargin + lp.bottomMargin;
- final int range = Math.min(nextYStart,
- height - paddingBottom - mOverhangSize) - yStart - margin;
- mSlideRange = range;
- final int lpMargin = lp.topMargin;
- final int pos = (int) (range * mSlideOffset);
- yStart += pos + lpMargin;
- updateSlideOffset(pos);
- } else {
- yStart = nextYStart;
- }
-
- final int childTop = yStart;
- final int childBottom = childTop + childHeight;
- final int childLeft = paddingLeft;
- final int childRight = childLeft + child.getMeasuredWidth();
-
- child.layout(childLeft, childTop, childRight, childBottom);
-
- nextYStart += child.getHeight();
- }
-
- if (mFirstLayout) {
- updateObscuredViewsVisibility(mSlideableView);
- }
-
- mFirstLayout = false;
- }
-
- @Override
- protected void onSizeChanged(int w, int h, int oldw, int oldh) {
- super.onSizeChanged(w, h, oldw, oldh);
- // Recalculate sliding panes and their details
- if (h != oldh) {
- mFirstLayout = true;
- }
- }
-
- @Override
- public void requestChildFocus(View child, View focused) {
- super.requestChildFocus(child, focused);
- if (!isInTouchMode() && !mCanSlide) {
- mPreservedOpenState = child == mSlideableView;
- }
- }
-
- @Override
- public boolean onInterceptTouchEvent(MotionEvent ev) {
- final int action = MotionEventCompat.getActionMasked(ev);
-
- // Preserve the open state based on the last view that was touched.
- if (!mCanSlide && action == MotionEvent.ACTION_DOWN && getChildCount() > 1) {
- // After the first things will be slideable.
- final View secondChild = getChildAt(1);
- if (secondChild != null) {
- mPreservedOpenState = !mDragHelper.isViewUnder(secondChild,
- (int) ev.getX(), (int) ev.getY());
- }
- }
-
- if (!mCanSlide || (mIsUnableToDrag && action != MotionEvent.ACTION_DOWN)) {
- if (!mIsInNestedScroll) {
- mDragHelper.cancel();
- }
- return super.onInterceptTouchEvent(ev);
- }
-
- if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
- if (!mIsInNestedScroll) {
- mDragHelper.cancel();
- }
- return false;
- }
-
- switch (action) {
- case MotionEvent.ACTION_DOWN: {
- mIsUnableToDrag = false;
- final float x = ev.getX();
- final float y = ev.getY();
- mInitialMotionX = x;
- mInitialMotionY = y;
-
- break;
- }
-
- case MotionEvent.ACTION_MOVE: {
- final float x = ev.getX();
- final float y = ev.getY();
- final float adx = Math.abs(x - mInitialMotionX);
- final float ady = Math.abs(y - mInitialMotionY);
- final int slop = mDragHelper.getTouchSlop();
- if (ady > slop && adx > ady || !isCapturableViewUnder((int) x, (int) y)) {
- if (!mIsInNestedScroll) {
- mDragHelper.cancel();
- }
- mIsUnableToDrag = true;
- return false;
- }
- }
- }
-
- final boolean interceptForDrag = mDragHelper.shouldInterceptTouchEvent(ev);
-
- return interceptForDrag;
- }
-
- @Override
- public boolean onTouchEvent(MotionEvent ev) {
- if (!mCanSlide) {
- return super.onTouchEvent(ev);
- }
-
- mDragHelper.processTouchEvent(ev);
-
- final int action = ev.getAction();
- boolean wantTouchEvents = true;
-
- switch (action & MotionEventCompat.ACTION_MASK) {
- case MotionEvent.ACTION_DOWN: {
- final float x = ev.getX();
- final float y = ev.getY();
- mInitialMotionX = x;
- mInitialMotionY = y;
- break;
- }
- }
-
- return wantTouchEvents;
- }
-
- /**
- * Refreshes the {@link OverlappingPaneLayout} be attempting to re-open or re-close the pane.
- * This ensures that the overlapping pane is repositioned based on any changes to the view
- * which is being overlapped.
- * <p>
- * The {@link #openPane()} and {@link #closePane()} methods do not perform any animation if the
- * pane has already been positioned appropriately.
- */
- public void refresh() {
- if (isOpen()) {
- openPane();
- } else {
- closePane();
- }
- }
-
- private boolean closePane(View pane, int initialVelocity) {
- if (mFirstLayout || smoothSlideTo(0.f, initialVelocity)) {
- mPreservedOpenState = false;
- return true;
- }
- return false;
- }
-
- private boolean openPane(View pane, int initialVelocity) {
- if (mFirstLayout || smoothSlideTo(1.f, initialVelocity)) {
- mPreservedOpenState = true;
- return true;
- }
- return false;
- }
-
- private void updateSlideOffset(int offsetPx) {
- mSlideOffsetPx = offsetPx;
- mSlideOffset = (float) mSlideOffsetPx / mSlideRange;
- }
-
- /**
- * Open the sliding pane if it is currently slideable. If first layout
- * has already completed this will animate.
- *
- * @return true if the pane was slideable and is now open/in the process of opening
- */
- public boolean openPane() {
- return openPane(mSlideableView, 0);
- }
-
- /**
- * Close the sliding pane if it is currently slideable. If first layout
- * has already completed this will animate.
- *
- * @return true if the pane was slideable and is now closed/in the process of closing
- */
- public boolean closePane() {
- return closePane(mSlideableView, 0);
- }
-
- /**
- * Check if the layout is open. It can be open either because the slider
- * itself is open revealing the left pane, or if all content fits without sliding.
- *
- * @return true if sliding panels are open
- */
- public boolean isOpen() {
- return !mCanSlide || mSlideOffset > 0;
- }
-
- /**
- * Check if the content in this layout cannot fully fit side by side and therefore
- * the content pane can be slid back and forth.
- *
- * @return true if content in this layout can be slid open and closed
- */
- public boolean isSlideable() {
- return mCanSlide;
- }
-
- private void onPanelDragged(int newTop) {
- if (mSlideableView == null) {
- // This can happen if we're aborting motion during layout because everything now fits.
- mSlideOffset = 0;
- return;
- }
- final LayoutParams lp = (LayoutParams) mSlideableView.getLayoutParams();
-
- final int lpMargin = lp.topMargin;
- final int topBound = getPaddingTop() + lpMargin;
-
- updateSlideOffset(newTop - topBound);
-
- dispatchOnPanelSlide(mSlideableView);
- }
-
- @Override
- protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
- final LayoutParams lp = (LayoutParams) child.getLayoutParams();
- boolean result;
- final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);
-
- if (mCanSlide && !lp.slideable && mSlideableView != null) {
- // Clip against the slider; no sense drawing what will immediately be covered.
- canvas.getClipBounds(mTmpRect);
-
- mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
- canvas.clipRect(mTmpRect);
- }
-
- if (Build.VERSION.SDK_INT >= 11) { // HC
- result = super.drawChild(canvas, child, drawingTime);
- } else {
- if (child.isDrawingCacheEnabled()) {
- child.setDrawingCacheEnabled(false);
- }
- result = super.drawChild(canvas, child, drawingTime);
- }
-
- canvas.restoreToCount(save);
-
- return result;
- }
-
- /**
- * Smoothly animate mDraggingPane to the target X position within its range.
- *
- * @param slideOffset position to animate to
- * @param velocity initial velocity in case of fling, or 0.
- */
- boolean smoothSlideTo(float slideOffset, int velocity) {
- if (!mCanSlide) {
- // Nothing to do.
- return false;
- }
-
- final LayoutParams lp = (LayoutParams) mSlideableView.getLayoutParams();
-
- int y;
- int topBound = getPaddingTop() + lp.topMargin;
- y = (int) (topBound + slideOffset * mSlideRange);
-
- if (mDragHelper.smoothSlideViewTo(mSlideableView, mSlideableView.getLeft(), y)) {
- setAllChildrenVisible();
- ViewCompat.postInvalidateOnAnimation(this);
- return true;
- }
- return false;
- }
-
- @Override
- public void computeScroll() {
- if (mDragHelper.continueSettling(/* deferCallbacks = */ false)) {
- if (!mCanSlide) {
- mDragHelper.abort();
- return;
- }
-
- ViewCompat.postInvalidateOnAnimation(this);
- }
- }
-
- private boolean isCapturableViewUnder(int x, int y) {
- View capturableView = mCapturableView != null ? mCapturableView : mSlideableView;
- if (capturableView == null) {
- return false;
- }
- int[] viewLocation = new int[2];
- capturableView.getLocationOnScreen(viewLocation);
- int[] parentLocation = new int[2];
- this.getLocationOnScreen(parentLocation);
- int screenX = parentLocation[0] + x;
- int screenY = parentLocation[1] + y;
- return screenX >= viewLocation[0]
- && screenX < viewLocation[0] + capturableView.getWidth()
- && screenY >= viewLocation[1]
- && screenY < viewLocation[1] + capturableView.getHeight();
- }
-
- @Override
- protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
- return new LayoutParams();
- }
-
- @Override
- protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
- return p instanceof MarginLayoutParams
- ? new LayoutParams((MarginLayoutParams) p)
- : new LayoutParams(p);
- }
-
- @Override
- protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
- return p instanceof LayoutParams && super.checkLayoutParams(p);
- }
-
- @Override
- public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) {
- return new LayoutParams(getContext(), attrs);
- }
-
- @Override
- protected Parcelable onSaveInstanceState() {
- Parcelable superState = super.onSaveInstanceState();
-
- SavedState ss = new SavedState(superState);
- ss.isOpen = isSlideable() ? isOpen() : mPreservedOpenState;
-
- return ss;
- }
-
- @Override
- protected void onRestoreInstanceState(Parcelable state) {
- SavedState ss = (SavedState) state;
- super.onRestoreInstanceState(ss.getSuperState());
-
- if (ss.isOpen) {
- openPane();
- } else {
- closePane();
- }
- mPreservedOpenState = ss.isOpen;
- }
-
- @Override
- public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) {
- final boolean startNestedScroll = (nestedScrollAxes & SCROLL_AXIS_VERTICAL) != 0;
- if (startNestedScroll) {
- mIsInNestedScroll = true;
- mDragHelper.startNestedScroll(mSlideableView);
- }
- if (DEBUG) {
- Log.d(TAG, "onStartNestedScroll: " + startNestedScroll);
- }
- return startNestedScroll;
- }
-
- @Override
- public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) {
- if (dy == 0) {
- // Nothing to do
- return;
- }
- if (DEBUG) {
- Log.d(TAG, "onNestedPreScroll: " + dy);
- }
-
- mInNestedPreScrollDownwards = dy < 0;
- mInNestedPreScrollUpwards = dy > 0;
- mIsInNestedFling = false;
- mDragHelper.processNestedScroll(mSlideableView, 0, -dy, consumed);
- }
-
- @Override
- public boolean onNestedPreFling(View target, float velocityX, float velocityY) {
- if (!(velocityY > 0 && mSlideOffsetPx != 0
- || velocityY < 0 && mSlideOffsetPx < mIntermediateOffset
- || velocityY < 0 && mSlideOffsetPx < mSlideRange
- && mPanelSlideCallbacks.isScrollableChildUnscrolled())) {
- // No need to consume the fling if the fling won't collapse or expand the header.
- // How far we are willing to expand the header depends on isScrollableChildUnscrolled().
- return false;
- }
-
- if (DEBUG) {
- Log.d(TAG, "onNestedPreFling: " + velocityY);
- }
- mInUpwardsPreFling = velocityY > 0;
- mIsInNestedFling = true;
- mIsInNestedScroll = false;
- mDragHelper.processNestedFling(mSlideableView, (int) -velocityY);
- return true;
- }
-
- @Override
- public void onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed,
- int dyUnconsumed) {
- if (DEBUG) {
- Log.d(TAG, "onNestedScroll: " + dyUnconsumed);
- }
- mIsInNestedFling = false;
- mDragHelper.processNestedScroll(mSlideableView, 0, -dyUnconsumed, null);
- }
-
- @Override
- public void onStopNestedScroll(View child) {
- if (DEBUG) {
- Log.d(TAG, "onStopNestedScroll");
- }
- if (mIsInNestedScroll && !mIsInNestedFling) {
- mDragHelper.stopNestedScroll(mSlideableView);
- mInNestedPreScrollDownwards = false;
- mInNestedPreScrollUpwards = false;
- mIsInNestedScroll = false;
- }
- }
-
- private class DragHelperCallback extends ViewDragHelper.Callback {
-
- @Override
- public boolean tryCaptureView(View child, int pointerId) {
- if (mIsUnableToDrag) {
- return false;
- }
-
- return ((LayoutParams) child.getLayoutParams()).slideable;
- }
-
- @Override
- public void onViewDragStateChanged(int state) {
- if (DEBUG) {
- Log.d(TAG, "onViewDragStateChanged: " + state);
- }
-
- if (mDragHelper.getViewDragState() == ViewDragHelper.STATE_IDLE) {
- if (mSlideOffset == 0) {
- updateObscuredViewsVisibility(mSlideableView);
- dispatchOnPanelClosed(mSlideableView);
- mPreservedOpenState = false;
- } else {
- dispatchOnPanelOpened(mSlideableView);
- mPreservedOpenState = true;
- }
- }
-
- if (state == ViewDragHelper.STATE_IDLE
- && mDragHelper.getVelocityMagnitude() > 0
- && mIsInNestedFling) {
- mIsInNestedFling = false;
- final int flingVelocity = !mInUpwardsPreFling ?
- -mDragHelper.getVelocityMagnitude() : mDragHelper.getVelocityMagnitude();
- mPanelSlideCallbacks.onPanelFlingReachesEdge(flingVelocity);
- }
- }
-
- @Override
- public void onViewCaptured(View capturedChild, int activePointerId) {
- // Make all child views visible in preparation for sliding things around
- setAllChildrenVisible();
- }
-
- @Override
- public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
- onPanelDragged(top);
- invalidate();
- }
-
- @Override
- public void onViewFling(View releasedChild, float xVelocity, float yVelocity) {
- if (releasedChild == null) {
- return;
- }
- if (DEBUG) {
- Log.d(TAG, "onViewFling: " + yVelocity);
- }
-
- // Flings won't always fully expand or collapse the header. Instead of performing the
- // fling and then waiting for the fling to end before snapping into place, we
- // immediately snap into place if we predict the fling won't fully expand or collapse
- // the header.
- int yOffsetPx = mDragHelper.predictFlingYOffset((int) yVelocity);
- if (yVelocity < 0) {
- // Only perform a fling if we know the fling will fully compress the header.
- if (-yOffsetPx > mSlideOffsetPx) {
- mDragHelper.flingCapturedView(releasedChild.getLeft(), /* minTop = */ 0,
- mSlideRange, Integer.MAX_VALUE, (int) yVelocity);
- } else {
- mIsInNestedFling = false;
- onViewReleased(releasedChild, xVelocity, yVelocity);
- }
- } else {
- // Only perform a fling if we know the fling will expand the header as far
- // as it can possible be expanded, given the isScrollableChildUnscrolled() value.
- if (yOffsetPx + mSlideOffsetPx >= mSlideRange
- && mPanelSlideCallbacks.isScrollableChildUnscrolled()) {
- mDragHelper.flingCapturedView(releasedChild.getLeft(), /* minTop = */ 0,
- Integer.MAX_VALUE, mSlideRange, (int) yVelocity);
- } else if (yOffsetPx + mSlideOffsetPx >= mIntermediateOffset
- && mSlideOffsetPx <= mIntermediateOffset
- && !mPanelSlideCallbacks.isScrollableChildUnscrolled()) {
- mDragHelper.flingCapturedView(releasedChild.getLeft(), /* minTop = */ 0,
- Integer.MAX_VALUE, mIntermediateOffset, (int) yVelocity);
- } else {
- mIsInNestedFling = false;
- onViewReleased(releasedChild, xVelocity, yVelocity);
- }
- }
-
- mInNestedPreScrollDownwards = false;
- mInNestedPreScrollUpwards = false;
-
- // Without this invalidate, some calls to flingCapturedView can have no affect.
- invalidate();
- }
-
- @Override
- public void onViewReleased(View releasedChild, float xvel, float yvel) {
- if (DEBUG) {
- Log.d(TAG, "onViewReleased: "
- + " mIsInNestedFling=" + mIsInNestedFling
- + " unscrolled=" + mPanelSlideCallbacks.isScrollableChildUnscrolled()
- + ", mInNestedPreScrollDownwards = " + mInNestedPreScrollDownwards
- + ", mInNestedPreScrollUpwards = " + mInNestedPreScrollUpwards
- + ", yvel=" + yvel);
- }
- if (releasedChild == null) {
- return;
- }
-
- final LayoutParams lp = (LayoutParams) releasedChild.getLayoutParams();
- int top = getPaddingTop() + lp.topMargin;
-
- // Decide where to snap to according to the current direction of motion and the current
- // position. The velocity's magnitude has no bearing on this.
- if (mInNestedPreScrollDownwards || yvel > 0) {
- // Scrolling downwards
- if (mSlideOffsetPx > mIntermediateOffset + mReleaseScrollSlop) {
- top += mSlideRange;
- } else if (mSlideOffsetPx > mReleaseScrollSlop) {
- top += mIntermediateOffset;
- } else {
- // Offset is very close to 0
- }
- } else if (mInNestedPreScrollUpwards || yvel < 0) {
- // Scrolling upwards
- if (mSlideOffsetPx > mSlideRange - mReleaseScrollSlop) {
- // Offset is very close to mSlideRange
- top += mSlideRange;
- } else if (mSlideOffsetPx > mIntermediateOffset - mReleaseScrollSlop) {
- // Offset is between mIntermediateOffset and mSlideRange.
- top += mIntermediateOffset;
- } else {
- // Offset is between 0 and mIntermediateOffset.
- }
- } else {
- // Not moving upwards or downwards. This case can only be triggered when directly
- // dragging the tabs. We don't bother to remember previous scroll direction
- // when directly dragging the tabs.
- if (0 <= mSlideOffsetPx && mSlideOffsetPx <= mIntermediateOffset / 2) {
- // Offset is between 0 and mIntermediateOffset, but closer to 0
- // Leave top unchanged
- } else if (mIntermediateOffset / 2 <= mSlideOffsetPx
- && mSlideOffsetPx <= (mIntermediateOffset + mSlideRange) / 2) {
- // Offset is closest to mIntermediateOffset
- top += mIntermediateOffset;
- } else {
- // Offset is between mIntermediateOffset and mSlideRange, but closer to
- // mSlideRange
- top += mSlideRange;
- }
- }
-
- mDragHelper.settleCapturedViewAt(releasedChild.getLeft(), top);
- invalidate();
- }
-
- @Override
- public int getViewVerticalDragRange(View child) {
- return mSlideRange;
- }
-
- @Override
- public int clampViewPositionHorizontal(View child, int left, int dx) {
- // Make sure we never move views horizontally.
- return child.getLeft();
- }
-
- @Override
- public int clampViewPositionVertical(View child, int top, int dy) {
- final LayoutParams lp = (LayoutParams) mSlideableView.getLayoutParams();
-
- final int newTop;
- int previousTop = top - dy;
- int topBound = getPaddingTop() + lp.topMargin;
- int bottomBound = topBound + (mPanelSlideCallbacks.isScrollableChildUnscrolled()
- || !mIsInNestedScroll ? mSlideRange : mIntermediateOffset);
- if (previousTop > bottomBound) {
- // We were previously below the bottomBound, so loosen the bottomBound so that this
- // makes sense. This can occur after the view was directly dragged by the tabs.
- bottomBound = Math.max(bottomBound, mSlideRange);
- }
- newTop = Math.min(Math.max(top, topBound), bottomBound);
-
- return newTop;
- }
-
- @Override
- public void onEdgeDragStarted(int edgeFlags, int pointerId) {
- mDragHelper.captureChildView(mSlideableView, pointerId);
- }
- }
-
- public static class LayoutParams extends ViewGroup.MarginLayoutParams {
- private static final int[] ATTRS = new int[] {
- android.R.attr.layout_weight
- };
-
- /**
- * The weighted proportion of how much of the leftover space
- * this child should consume after measurement.
- */
- public float weight = 0;
-
- /**
- * True if this pane is the slideable pane in the layout.
- */
- boolean slideable;
-
- public LayoutParams() {
- super(FILL_PARENT, FILL_PARENT);
- }
-
- public LayoutParams(int width, int height) {
- super(width, height);
- }
-
- public LayoutParams(android.view.ViewGroup.LayoutParams source) {
- super(source);
- }
-
- public LayoutParams(MarginLayoutParams source) {
- super(source);
- }
-
- public LayoutParams(LayoutParams source) {
- super(source);
- this.weight = source.weight;
- }
-
- public LayoutParams(Context c, AttributeSet attrs) {
- super(c, attrs);
-
- final TypedArray a = c.obtainStyledAttributes(attrs, ATTRS);
- this.weight = a.getFloat(0, 0);
- a.recycle();
- }
-
- }
-
- static class SavedState extends BaseSavedState {
- boolean isOpen;
-
- SavedState(Parcelable superState) {
- super(superState);
- }
-
- private SavedState(Parcel in) {
- super(in);
- isOpen = in.readInt() != 0;
- }
-
- @Override
- public void writeToParcel(Parcel out, int flags) {
- super.writeToParcel(out, flags);
- out.writeInt(isOpen ? 1 : 0);
- }
-
- public static final Parcelable.Creator<SavedState> CREATOR =
- new Parcelable.Creator<SavedState>() {
- public SavedState createFromParcel(Parcel in) {
- return new SavedState(in);
- }
-
- public SavedState[] newArray(int size) {
- return new SavedState[size];
- }
- };
- }
-
- class AccessibilityDelegate extends AccessibilityDelegateCompat {
- private final Rect mTmpRect = new Rect();
-
- @Override
- public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
- final AccessibilityNodeInfoCompat superNode = AccessibilityNodeInfoCompat.obtain(info);
- super.onInitializeAccessibilityNodeInfo(host, superNode);
- copyNodeInfoNoChildren(info, superNode);
- superNode.recycle();
-
- info.setClassName(OverlappingPaneLayout.class.getName());
- info.setSource(host);
-
- final ViewParent parent = ViewCompat.getParentForAccessibility(host);
- if (parent instanceof View) {
- info.setParent((View) parent);
- }
-
- // This is a best-approximation of addChildrenForAccessibility()
- // that accounts for filtering.
- final int childCount = getChildCount();
- for (int i = 0; i < childCount; i++) {
- final View child = getChildAt(i);
- if (child.getVisibility() == View.VISIBLE) {
- // Force importance to "yes" since we can't read the value.
- ViewCompat.setImportantForAccessibility(
- child, ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES);
- info.addChild(child);
- }
- }
- }
-
- @Override
- public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
- super.onInitializeAccessibilityEvent(host, event);
-
- event.setClassName(OverlappingPaneLayout.class.getName());
- }
-
- /**
- * This should really be in AccessibilityNodeInfoCompat, but there unfortunately
- * seem to be a few elements that are not easily cloneable using the underlying API.
- * Leave it private here as it's not general-purpose useful.
- */
- private void copyNodeInfoNoChildren(AccessibilityNodeInfoCompat dest,
- AccessibilityNodeInfoCompat src) {
- final Rect rect = mTmpRect;
-
- src.getBoundsInParent(rect);
- dest.setBoundsInParent(rect);
-
- src.getBoundsInScreen(rect);
- dest.setBoundsInScreen(rect);
-
- dest.setVisibleToUser(src.isVisibleToUser());
- dest.setPackageName(src.getPackageName());
- dest.setClassName(src.getClassName());
- dest.setContentDescription(src.getContentDescription());
-
- dest.setEnabled(src.isEnabled());
- dest.setClickable(src.isClickable());
- dest.setFocusable(src.isFocusable());
- dest.setFocused(src.isFocused());
- dest.setAccessibilityFocused(src.isAccessibilityFocused());
- dest.setSelected(src.isSelected());
- dest.setLongClickable(src.isLongClickable());
-
- dest.addAction(src.getActions());
-
- dest.setMovementGranularities(src.getMovementGranularities());
- }
- }
-}