package com.example.wechat01.widght.swipe;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Rect;
import android.support.v4.view.ViewCompat;
import android.support.v4.widget.ViewDragHelper;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.FrameLayout;
import android.widget.ListAdapter;
import com.example.wechat01.R;
public class SwipeLayout extends FrameLayout {
private ViewDragHelper mDragHelper;
private int mDragDistance = 0;
private DragEdge mDragEdge;
private ShowMode mShowMode;
private List<SwipeListener> mSwipeListeners = new ArrayList<SwipeListener>();
private List<SwipeDenier> mSwipeDeniers = new ArrayList<SwipeDenier>();
private Map<View, ArrayList<OnRevealListener>> mRevealListeners = new HashMap<View, ArrayList<OnRevealListener>>();
private Map<View, Boolean> mShowEntirely = new HashMap<View, Boolean>();
private DoubleClickListener mDoubleClickListener;
private boolean mSwipeEnabled = true;
public static enum DragEdge {
Left, Right, Top, Bottom;
};
public static enum ShowMode {
LayDown, PullOut
}
public SwipeLayout(Context context) {
this(context, null);
}
public SwipeLayout(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public SwipeLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mDragHelper = ViewDragHelper.create(this, mDragHelperCallback);
TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.SwipeLayout);
int ordinal = a.getInt(R.styleable.SwipeLayout_drag_edge,
DragEdge.Right.ordinal());
mDragEdge = DragEdge.values()[ordinal];
ordinal = a.getInt(R.styleable.SwipeLayout_show_mode,
ShowMode.PullOut.ordinal());
mShowMode = ShowMode.values()[ordinal];
}
public interface SwipeListener {
public void onStartOpen(SwipeLayout layout);
public void onOpen(SwipeLayout layout);
public void onStartClose(SwipeLayout layout);
public void onClose(SwipeLayout layout);
public void onUpdate(SwipeLayout layout, int leftOffset, int topOffset);
public void onHandRelease(SwipeLayout layout, float xvel, float yvel);
}
public void addSwipeListener(SwipeListener l) {
mSwipeListeners.add(l);
}
public void removeSwipeListener(SwipeListener l) {
mSwipeListeners.remove(l);
}
public static interface SwipeDenier {
/*
* Called in onInterceptTouchEvent Determines if this swipe event should
* be denied Implement this interface if you are using views with swipe
* gestures As a child of SwipeLayout
*
* @return true deny false allow
*/
public boolean shouldDenySwipe(MotionEvent ev);
}
public void addSwipeDenier(SwipeDenier denier) {
mSwipeDeniers.add(denier);
}
public void removeSwipeDenier(SwipeDenier denier) {
mSwipeDeniers.remove(denier);
}
public void removeAllSwipeDeniers() {
mSwipeDeniers.clear();
}
public interface OnRevealListener {
public void onReveal(View child, DragEdge edge, float fraction,
int distance);
}
/**
* bind a view with a specific
* {@link com.daimajia.swipe.SwipeLayout.OnRevealListener}
*
* @param childId
* the view id.
* @param l
* the target
* {@link com.daimajia.swipe.SwipeLayout.OnRevealListener}
*/
public void addRevealListener(int childId, OnRevealListener l) {
View child = findViewById(childId);
if (child == null) {
throw new IllegalArgumentException(
"Child does not belong to SwipeListener.");
}
if (!mShowEntirely.containsKey(child)) {
mShowEntirely.put(child, false);
}
if (mRevealListeners.get(child) == null)
mRevealListeners.put(child, new ArrayList<OnRevealListener>());
mRevealListeners.get(child).add(l);
}
/**
* bind multiple views with an
* {@link com.daimajia.swipe.SwipeLayout.OnRevealListener}.
*
* @param childIds
* the view id.
* @param l
* the {@link com.daimajia.swipe.SwipeLayout.OnRevealListener}
*/
public void addRevealListener(int[] childIds, OnRevealListener l) {
for (int i : childIds)
addRevealListener(i, l);
}
public void removeRevealListener(int childId, OnRevealListener l) {
View child = findViewById(childId);
if (child == null)
return;
mShowEntirely.remove(child);
if (mRevealListeners.containsKey(child))
mRevealListeners.get(child).remove(l);
}
public void removeAllRevealListeners(int childId) {
View child = findViewById(childId);
if (child != null) {
mRevealListeners.remove(child);
mShowEntirely.remove(child);
}
}
private ViewDragHelper.Callback mDragHelperCallback = new ViewDragHelper.Callback() {
@Override
public int clampViewPositionHorizontal(View child, int left, int dx) {
if (child == getSurfaceView()) {
switch (mDragEdge) {
case Top:
case Bottom:
return getPaddingLeft();
case Left:
if (left < getPaddingLeft())
return getPaddingLeft();
if (left > getPaddingLeft() + mDragDistance)
return getPaddingLeft() + mDragDistance;
break;
case Right:
if (left > getPaddingLeft())
return getPaddingLeft();
if (left < getPaddingLeft() - mDragDistance)
return getPaddingLeft() - mDragDistance;
break;
}
} else if (child == getBottomView()) {
switch (mDragEdge) {
case Top:
case Bottom:
return getPaddingLeft();
case Left:
if (mShowMode == ShowMode.PullOut) {
if (left > getPaddingLeft())
return getPaddingLeft();
}
break;
case Right:
if (mShowMode == ShowMode.PullOut) {
if (left < getMeasuredWidth() - mDragDistance) {
return getMeasuredWidth() - mDragDistance;
}
}
break;
}
}
return left;
}
@Override
public int clampViewPositionVertical(View child, int top, int dy) {
if (child == getSurfaceView()) {
switch (mDragEdge) {
case Left:
case Right:
return getPaddingTop();
case Top:
if (top < getPaddingTop())
return getPaddingTop();
if (top > getPaddingTop() + mDragDistance)
return getPaddingTop() + mDragDistance;
break;
case Bottom:
if (top < getPaddingTop() - mDragDistance) {
return getPaddingTop() - mDragDistance;
}
if (top > getPaddingTop()) {
return getPaddingTop();
}
}
} else {
switch (mDragEdge) {
case Left:
case Right:
return getPaddingTop();
case Top:
if (mShowMode == ShowMode.PullOut) {
if (top > getPaddingTop())
return getPaddingTop();
} else {
if (getSurfaceView().getTop() + dy < getPaddingTop())
return getPaddingTop();
if (getSurfaceView().getTop() + dy > getPaddingTop()
+ mDragDistance)
return getPaddingTop() + mDragDistance;
}
break;
case Bottom:
if (mShowMode == ShowMode.PullOut) {
if (top < getMeasuredHeight() - mDragDistance)
return getMeasuredHeight() - mDragDistance;
} else {
if (getSurfaceView().getTop() + dy >= getPaddingTop())
return getPaddingTop();
if (getSurfaceView().getTop() + dy <= getPaddingTop()
- mDragDistance)
return getPaddingTop() - mDragDistance;
}
}
}
return top;
}
@Override
public boolean tryCaptureView(View child, int pointerId) {
return child == getSurfaceView() || child == getBottomView();
}
@Override
public int getViewHorizontalDragRange(View child) {
return mDragDistance;
}
@Override
public int getViewVerticalDragRange(View child) {
return mDragDistance;
}
@Override
public void onViewReleased(View releasedChild, float xvel, float yvel) {
super.onViewReleased(releasedChild, xvel, yvel);
for (SwipeListener l : mSwipeListeners)
l.onHandRelease(SwipeLayout.this, xvel, yvel);
if (releasedChild == getSurfaceView()) {
processSurfaceRelease(xvel, yvel);
} else if (releasedChild == getBottomView()) {
if (getShowMode() == ShowMode.PullOut) {
processBottomPullOutRelease(xvel, yvel);
} else if (getShowMode() == ShowMode.LayDown) {
processBottomLayDownMode(xvel, yvel);
}
}
invalidate();
}
@Override
public void onViewPositionChanged(View changedView, int left, int top,
int dx, int dy) {
int evLeft = getSurfaceView().getLeft(), evRight = getSurfaceView()
.getRight(), evTop = getSurfaceView().getTop(), evBottom = getSurfaceView()
.getBottom();
if (changedView == getSurfaceView()) {
if (mShowMode == ShowMode.PullOut) {
if (mDragEdge == DragEdge.Left
|| mDragEdge == DragEdge.Right)
getBottomView().offsetLeftAndRight(dx);
else
getBottomView().offsetTopAndBottom(dy);
}
} else if (changedView == getBottomView()) {
if (mShowMode == ShowMode.PullOut) {
getSurfaceView().offsetLeftAndRight(dx);
getSurfaceView().offsetTopAndBottom(dy);
} else {
Rect rect = computeBottomLayDown(mDragEdge);
getBottomView().layout(rect.left, rect.top, rect.right,
rect.bottom);
int newLeft = getSurfaceView().getLeft() + dx, newTop = getSurfaceView()
.getTop() + dy;
if (mDragEdge == DragEdge.Left
&& newLeft < getPaddingLeft())
newLeft = getPaddingLeft();
else if (mDragEdge == DragEdge.Right
&& newLeft > getPaddingLeft())
newLeft = getPaddingLeft();
else if (mDragEdge == DragEdge.Top
&& newTop < getPaddingTop())
newTop = getPaddingTop();
else if (mDragEdge == DragEdge.Bottom
&& newTop > getPaddingTop())
newTop = getPaddingTop();
getSurfaceView().layout(newLeft, newTop,
newLeft + getMeasuredWidth(),
newTop + getMeasuredHeight());
}
}
dispatchRevealEvent(evLeft, evTop, evRight, evBottom);
dispatchSwipeEvent(evLeft, evTop, dx, dy);
invalidate();
}
};
/**
* the dispatchRevealEvent method may not always get accurate position, it
* makes the view may not always get the event when the view is totally
* show( fraction = 1), so , we need to calculate every time.
*
* @param child
* @param relativePosition
* @param edge
* @param surfaceLeft
* @param surfaceTop
* @param surfaceRight
* @param surfaceBottom
* @return
*/
protected boolean isViewTotallyFirstShowed(View child,
Rect relativePosition, DragEdge edge, int surfaceLeft,
int surfaceTop, int surfaceRight, int surfaceBottom) {
if (mShowEntirely.get(child))
return false;
int childLeft = relativePosition.left;
int childRight = relativePosition.right;
int childTop = relativePosition.top;
int childBottom = relativePosition.bottom;
boolean r = false;
if (getShowMode() == ShowMode.LayDown) {
if ((edge == DragEdge.Right && surfaceRight <= childLeft)
|| (edge == DragEdge.Left && surfaceLeft >= childRight)
|| (edge == DragEdge.Top && surfaceTop >= childBottom)
|| (edge == DragEdge.Bottom && surfaceBottom <= childTop))
r = true;
} else if (getShowMode() == ShowMode.PullOut) {
if ((edge == DragEdge.Right && childRight <= getWidth())
|| (edge == DragEdge.Left && childLeft >= getPaddingLeft())
|| (edge == DragEdge.Top && childTop >= getPaddingTop())
|| (edge == DragEdge.Bottom && childBottom <= getHeight()))
r = true;
}
return r;
}
protected boolean isViewShowing(View child, Rect relativePosition,
DragEdge availableEdge, int surfaceLeft, int surfaceTop,
int surfaceRight, int surfaceBottom) {
int childLeft = relativePosition.left;
int childRight = relativePosition.right;
int childTop = relativePosition.top;
int childBottom = relativePosition.bottom;
if (getShowMode() == ShowMode.LayDown) {
switch (availableEdge) {
case Right:
if (surfaceRight > childLeft && surfaceRight <= childRight) {
return true;
}
break;
case Left:
if (surfaceLeft < childRight && surfaceLeft >= childLeft) {
return true;
}
break;
case Top:
if (surfaceTop >= childTop && surfaceTop < childBottom) {
return true;
}
break;
case Bottom:
if (surfaceBottom > childTop && surfaceBottom <= childBottom) {
return true;
}
break;
}
} else if (getShowMode() == ShowMode.PullOut) {
switch (availableEdge) {
case Right:
if (childLeft <= getWidth() && childRight > getWidth())
return true;
break;
case Left:
if (childRight >= getPaddingLeft()
&& childLeft < getPaddingLeft())
return true;
break;
case Top:
if (childTop < getPaddingTop()
&& childBottom >= getPaddingTop())
return true;
break;
case Bottom:
if (childTop < getHeight() && childTop >= getPaddingTop())
return true;
break;
}
}
return false;
}
protected Rect getRelativePosition(View child) {
View t = child;
Rect r = new Rect(t.getLeft(), t.getTop(), 0, 0);
while (t.getParent() != null && t != getRootView()) {
t = (View) t.getParent();
if (t == this)
break;
r.left += t.getLeft();
r.top += t.getTop();
}
r.right = r.left + child.getMeasuredWidth();
r.bottom = r.top + child.getMeasuredHeight();
return r;
}
private int mEventCounter = 0;
protected void dispatchSwipeEvent(int surfaceLeft, int surfaceTop, int dx,
int dy) {
DragEdge edge = getDragEdge();
boolean open = true;
if (edge == DragEdge.Left) {
if (dx < 0)
open = false;
} else if (edge == DragEdge.Right) {
if (dx > 0)
open = false;
} else if (edge == DragEdge.Top) {
if (dy < 0)
open = false;
} else if (edge == DragEdge.Bottom) {
if (dy > 0)
open = false;
}
dispatchSwipeEvent(surfaceLeft, surfaceTop, open);
}
protected void dispatchSwipeEvent(int surfaceLeft, int surfaceTop,
boolean open) {
safeBottomView();
Status status = getOpenStatus();
if (!mSwipeListeners.isEmpty()) {
mEventCounter++;
for (SwipeListener l : mSwipeListeners) {
if (mEventCounter == 1) {
if (open) {
l.onStartOpen(this);
} else {
l.onStartClose(this);
}
}
l.onUpdate(SwipeLayout.this, surfaceLeft - getPaddingLeft(),
surfaceTop - getPaddingTop());
}
if (status == Status.Close) {
for (SwipeListener l : mSwipeListeners) {
l.onClose(SwipeLayout.this);
}
mEventCounter = 0;
}
if (status == Status.Open) {
getBottomView().setEnabled(true);
for (SwipeListener l : mSwipeListeners) {
l.onOpen(SwipeLayout.this);
}
mEventCounter = 0;
}
}
}
/**
* prevent bottom view get any touch event. Especially in LayDown mode.
*/
private void safeBottomView() {
Status status = getOpenStatus();
ViewGroup bottom = getBottomView();
if (status == Status.Close) {
if (bottom.getVisibility() != INVISIBLE)
bottom.setVisibility(INVISIBLE);
} else {
if (bottom.getVisibility() != VISIBLE)
bottom.setVisibility(VISIBLE);
}
}
protected void dispatchRevealEvent(final int surfaceLeft,
final int surfaceTop, final int surfaceRight,
final int surfaceBottom) {
if (mRevealListeners.isEmpty())
return;
for (Map.Entry<View, ArrayList<OnRevealListener>> entry : mRevealListeners
.entrySet()) {
View child = entry.getKey();
Rect rect = getRelativePosition(child);
if (isViewShowing(child, rect, mDragEdge, surfaceLeft, surfaceTop,
surfaceRight, surfaceBottom)) {
mShowEntirely.put(child, false);
int distance = 0;
float fraction = 0f;
if (getShowMode() == ShowMode.LayDown) {
switch (mDragEdge) {
case Left:
distance = rect.left - surfaceLeft;
fraction = distance / (float) child.getWidth();
break;
case Right:
distance = rect.right - surfaceRight;
fraction = distance / (float) child.getWidth();
break;
case Top:
distance = rect.top - surfaceTop;
fraction = distance / (float) child.getHeight();
break;
case Bottom:
distance = rect.bottom - surfaceBottom;
fraction = distance / (float) child.getHeight();
break;
}
} else if (getShowMode() == ShowMode.PullOut) {
switch (mDragEdge) {
case Left:
distance = rect.right - getPaddingLeft();
fraction = distance / (float) child.getWidth();
break;
case Right:
distance = rect.left - getWidth();
fraction = distance / (float) child.getWidth();
break;
case Top:
distance = rect.bottom - getPaddingTop();
fraction = distance / (float) child.getHeight();
break;
case Bottom:
distance = rect.top - getHeight();
fraction = distance / (float) child.getHeight();
break;
}
}
for (OnRevealListener l : entry.getValue()) {
l.onReveal(child, mDragEdge, Math.abs(fraction), distance);
if (Math.abs(fraction) == 1) {
mShowEntirely.put(child, true);
}
}
}
if (isViewTotallyFirstShowed(child, rect, mDragEdge, surfaceLeft,
surfaceTop, surfaceRight, surfaceBottom)) {
mShowEntirely.put(child, true);
for (OnRevealListener l : entry.getValue()) {
if (mDragEdge == DragEdge.Left
|| mDragEdge == DragEdge.Right)
l.onReveal(child, mDragEdge, 1, child.getWidth());
else
l.onReveal(child, mDragEdge, 1, child.getHeight());
}
}
}
}
@Override
public void computeScroll() {
super.computeScroll();
if (mDragHelper.continueSettling(true)) {
ViewCompat.postInvalidateOnAnimation(this);
}
}
/**
* {@link android.view.View.OnLayoutChangeListener} added in API 11. I need
* to support it from API 8.
*/
public interface OnLayout {
public void onLayout(SwipeLayout v);
}
private List<OnLayout> mOnLayoutListeners;
public void addOnLayoutListener(OnLayout l) {
if (mOnLayoutListeners == null)
mOnLayoutListeners = new ArrayList<OnLayout>();
mOnLayoutListeners.add(l);
}
public void removeOnLayoutListener(OnLayout l) {
if (mOnLayoutListeners != null)
mOnLayoutListeners.remove(l);
}
@SuppressLint("WrongCall")
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int childCount = getChildCount();
if (childCount != 2) {
throw new IllegalStateException("You need 2 views in SwipeLayout");
}
if (!(getChildAt(0) instanceof ViewGroup)
|| !(getChildAt(1) instanceof ViewGroup)) {
throw new IllegalArgumentException(
"The 2 children in SwipeLayout must be an instance of ViewGroup");
}
if (mShowMode == ShowMode.PullOut)
layoutPullOut();
else if (mShowMode == ShowMode.LayDown)
layoutLayDown();
safeBottomView();
if (mOnLayoutListeners != null)
for (int i = 0; i < mOnLayoutListeners.size(); i++) {
mOnLayoutListeners.get(i).onLayout(this);
}
}
void layoutPullOut() {
Rect rect = computeSurfaceLayoutArea(false);
getSurfaceView().layout(rect.left, rect.top, rect.right, rect.bottom);
rect = computeBottomLayoutAreaViaSurface(ShowMode.PullOut, rect);
getBottomView().layout(rect.left, rect.top, rect.right, rect.bottom);
bringChildToFront(getSurfaceView());
}
void layoutLayDown() {
Rect rect = computeSurfaceLayoutArea(false);
getSurfaceView().layout(rect.left, rect.top, rect.right, rect.bottom);
rect = computeBottomLayoutAreaViaSurface(ShowMode.LayDown, rect);
getBottomView().layout(rect.left, rect.top, rect.right, rect.bottom);
bringChildToFront(getSurfaceView());
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right)
mDragDistance = getBottomView().getMeasuredWidth();
else
mDragDistance = getBottomView().getMeasuredHeight();
}
private boolean mTouchConsumedByChild = false;
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (!isEnabled() || !isEnabledInAdapterView()) {
return true;
}
if (!isSwipeEnabled()) {
return false;
}
for (SwipeDenier denier : mSwipeDeniers) {
if (denier != null && denier.shouldDenySwipe(ev)) {
return false;
}
}
//
// if a child wants to handle the touch event,
// then let it do it.
//
int action = ev.getActionMasked();
switch (action) {
case MotionEvent.ACTION_DOWN:
Status status = getOpenStatus();
if (status == Status.Close) {
mTouchConsumedByChild = childNeedHandleTouchEvent(
getSurfaceView(), ev) != null;
} else if (status == Status.Open) {
mTouchConsumedByChild = childNeedHandleTouchEvent(
getBottomView(), ev) != null;
}
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
mTouchConsumedByChild = false;
}
if (mTouchConsumedByChild)
return false;
return mDragHelper.shouldInterceptTouchEvent(ev);
}
/**
* if the ViewGroup children want to handle this event.
*
* @param v
* @param event
* @return
*/
private View childNeedHandleTouchEvent(ViewGroup v, MotionEvent event) {
if (v == null)
return null;
if (v.onTouchEvent(event))
return v;
int childCount = v.getChildCount();
for (int i = childCount - 1; i >= 0; i--) {
View child = v.getChildAt(i);
if (child instanceof ViewGroup) {
View grandChild = childNeedHandleTouchEvent((ViewGroup) child,
event);
if (grandChild != null)
return grandChild;
} else {
if (childNeedHandleTouchEvent(v.getChildAt(i), event))
return v.getChildAt(i);
}
}
return null;
}
/**
* if the view (v) wants to handle this event.
*
* @param v
* @param event
* @return
*/
private boolean childNeedHandleTouchEvent(View v, MotionEvent event) {
if (v == null)
return false;
int[] loc = new int[2];
v.getLocationOnScreen(loc);
int left = loc[0], top = loc[1];
if (event.getRawX() > left && event.getRawX() < left + v.getWidth()
&& event.getRawY() > top
&& event.getRawY() < top + v.getHeight()) {
return v.onTouchEvent(event);
}
return false;
}
private float sX = -1, sY = -1;
@Override
public boolean onTouchEvent(MotionEvent event) {
if (!isEnabledInAdapterView() || !isEnabled())
return true;
if (!isSwipeEnabled())
return super.onTouchEvent(event);
int action = event.getActionMasked();
ViewParent parent = getParent();
gestureDetector.onTouchEvent(event);
Status status = getOpenStatus();
ViewGroup touching = null;
if (status == Status.Close) {
touching = getSurfaceView();
} else if (status == Status.Open) {
touching = getBottomView();
}
switch (action) {
case MotionEvent.ACTION_DOWN:
mDragHelper.processTouchEvent(event);
parent.requestDisallowInterceptTouchEvent(true);
sX = event.getRawX();
sY = event.getRawY();
if (touching != null)
touching.setPressed(true);
return true;
case MotionEvent.ACTION_MOVE: {
if (sX == -1 || sY == -1) {
// Trick:
// When in nested mode, we need to send a constructed
// ACTION_DOWN MotionEvent to mDragHelper, to help
// it initialize itself.
event.setAction(MotionEvent.ACTION_DOWN);
mDragHelper.processTouchEvent(event);
parent.requestDisallowInterceptTouchEvent(true);
sX = event.getRawX();
sY = event.getRawY();
return true;
}
float distanceX = event.getRawX() - sX;
float distanceY = event.getRawY() - sY;
float angle = Math.abs(distanceY / distanceX);
angle = (float) Math.toDegrees(Math.atan(angle));
boolean doNothing = false;
if (mDragEdge == DragEdge.Right) {
boolean suitable = (status == Status.Open && distanceX > 0)
|| (status == Status.Close && distanceX < 0);
suitable = suitable || (status == Status.Middle);
if (angle > 30 || !suitable) {
doNothing = true;
}
}
if (mDragEdge == DragEdge.Left) {
boolean suitable = (status == Status.Open && distanceX < 0)
|| (status == Status.Close && distanceX > 0);
suitable = suitable || status == Status.Middle;
if (angle > 30 || !suitable) {
doNothing = true;
}
}
if (mDragEdge == DragEdge.Top) {
boolean suitable = (status == Status.Open && distanceY < 0)
|| (status == Status.Close && distanceY > 0);
suitable = suitable || status == Status.Middle;
if (angle < 60 || !suitable) {
doNothing = true;
}
}
if (mDragEdge == DragEdge.Bottom) {
boolean suitable = (status == Status.Open && distanceY > 0)
|| (status == Status.Close && distanceY < 0);
suitable = suitable || status == Status.Middle;
if (angle < 60 || !suitable) {
doNothing = true;
}
}
if (doNothing) {
parent.requestDisallowInterceptTouchEvent(false);
return false;
} else {
if (touching != null) {
touching.setPressed(false);
}
parent.requestDisallowInterceptTouchEvent(true);
mDragHelper.processTouchEvent(event);
}
break;
}
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL: {
sX = -1;
sY = -1;
if (touching != null) {
touching.setPressed(false);
}
}
default:
parent.requestDisallowInterceptTouchEvent(true);
mDragHelper.processTouchEvent(event);
}
return true;
}
/**
* if working in {@link android.widget.AdapterView}, we should response
* {@link android.widget.Adapter} isEnable(int position).
*
* @return true when item is enabled, else disabled.
*/
private boolean isEnabledInAdapterView() {
AdapterView adapterView = getAdapterView();
boolean enable = true;
if (adapterView != null) {
Adapter adapter = adapterView.getAdapter();
if (adapter != null) {
int p = adapterView.getPositionForView(SwipeLayout.this);
if (adapter instanceof BaseAdapter) {
enable = ((BaseAdapter) adapter).isEnabled(p);
} else if (adapter instanceof ListAdapter) {
enable = ((ListAdapter) adapter).isEnabled(p);
}
}
}
return enable;
}
public void setSwipeEnabled(boolean enabled) {
mSwipeEnabled = enabled;
}
public boolean isSwipeEnabled() {
return mSwipeEnabled;
}
private boolean insideAdapterView() {
return getAdapterView() != null;
}
private AdapterView getAdapterView() {
ViewParent t = getParent();
while (t != null) {
if (t instanceof AdapterView) {
return (AdapterView) t;
}
t = t.getParent();
}
return null;
}
private void performAdapterViewItemClick(MotionEvent e) {
ViewParent t = getParent();
while (t != null) {
if (t instanceof AdapterView) {
AdapterView view = (AdapterView) t;
int p = view.getPositionForView(SwipeLayout.this);
if (p != AdapterView.INVALID_POSITION
&& view.performItemClick(view.getChildAt(p), p, view
.getAdapter().getItemId(p)))
return;
} else {
if (t instanceof View && ((View) t).performClick())
return;
}
t = t.getParent();
}
}
private GestureDetector gestureDetector = new GestureDetector(getContext(),
new SwipeDetector());
class SwipeDetector extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onDown(MotionEvent e) {
return true;
}
/**
* Simulate the touch event lifecycle. If you use SwipeLayout in
* {@link android.widget.AdapterView} ({@link android.widget.ListView},
* {@link android.widget.GridView} etc.) It will manually call
* {@link android.widget.AdapterView}.performItemClick,
* performItemLongClick.
*
* @param e
* @return
*/
@Override
public boolean onSingleTapUp(MotionEvent e) {
if (mDoubleClickListener == null) {
performAdapterViewItemClick(e);
}
return true;
}
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
if (mDoubleClickListener != null) {
performAdapterViewItemClick(e);
}
return true;
}
@Override
public void onLongPress(MotionEvent e) {
performLongClick();
}
@Override
public boolean onDoubleTap(MotionEvent e) {
if (mDoubleClickListener != null) {
View target;
ViewGroup bottom = getBottomView();
ViewGroup surface = getSurfaceView();
if (e.getX() > bottom.getLeft() && e.getX() < bottom.getRight()
&& e.getY() > bottom.getTop()
&& e.getY() < bottom.getBottom()) {
target = bottom;
} else {
target = surface;
}
mDoubleClickListener.onDoubleClick(SwipeLayout.this,
target == surface);
}
return true;
}
}
public void setDragEdge(DragEdge dragEdge) {
mDragEdge = dragEdge;
requestLayout();
}
/**
* set the drag distance, it will force set the bottom view's width or
* height via this value.
*
* @param max
*/
public void setDragDistance(int max) {
if (max < 0)
throw new IllegalArgumentException("Drag distance can not be < 0");
mDragDistance = dp2px(max);
requestLayout();
}
/**
* There are 2 diffirent show mode.
* {@link com.daimajia.swipe.SwipeLayout.ShowMode}.PullOut and
* {@link com.daimajia.swipe.SwipeLayout.ShowMode}.LayDown.
*
* @param mode
*/
public void setShowMode(ShowMode mode) {
mShowMode = mode;
requestLayout();
}
public DragEdge getDragEdge() {
return mDragEdge;
}
public int getDragDistance() {
return mDragDistance;
}
public ShowMode getShowMode() {
return mShowMode;
}
public ViewGroup getSurfaceView() {
return (ViewGroup) getChildAt(1);
}
public ViewGroup getBottomView() {
return (ViewGroup) getChildAt(0);
}
public enum Status {
Middle, Open, Close
}
/**
* get the open status.
*
* @return {@link com.daimajia.swipe.SwipeLayout.Status} Open , Close or
* Middle.
*/
public Status getOpenStatus() {
int surfaceLeft = getSurfaceView().getLeft();
int surfaceTop = getSurfaceView().getTop();
if (surfaceLeft == getPaddingLeft() && surfaceTop == getPaddingTop())
return Status.Close;
if (surfaceLeft == (getPaddingLeft() - mDragDistance)
|| surfaceLeft == (getPaddingLeft() + mDragDistance)
|| surfaceTop == (getPaddingTop() - mDragDistance)
|| surfaceTop == (getPaddingTop() + mDragDistance))
return Status.Open;
return Status.Middle;
}
/**
* Process the surface release event.
*
* @param xvel
* @param yvel
*/
private void processSurfaceRelease(float xvel, float yvel) {
if (xvel == 0 && getOpenStatus() == Status.Middle)
close();
if (mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right) {
if (xvel > 0) {
if (mDragEdge == DragEdge.Left)
open();
else
close();
}
if (xvel < 0) {
if (mDragEdge == DragEdge.Left)
close();
else
open();
}
} else {
if (yvel > 0) {
if (mDragEdge == DragEdge.Top)
open();
else
close();
}
if (yvel < 0) {
if (mDragEdge == DragEdge.Top)
close();
else
open();
}
}
}
/**
* process bottom (PullOut mode) hand release event.
*
* @param xvel
* @param yvel
*/
private void processBottomPullOutRelease(float xvel, float yvel) {
if (xvel == 0 && getOpenStatus() == Status.Middle)
close();
if (mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right) {
if (xvel > 0) {
if (mDragEdge == DragEdge.Left)
open();
else
close();
}
if (xvel < 0) {
if (mDragEdge == DragEdge.Left)
close();
else
open();
}
} else {
if (yvel > 0) {
if (mDragEdge == DragEdge.Top)
open();
else
close();
}
if (yvel < 0) {
if (mDragEdge == DragEdge.Top)
close();
else
open();
}
}
}
/**
* process bottom (LayDown mode) hand release event.
*
* @param xvel
* @param yvel
*/
private void processBottomLayDownMode(float xvel, float yvel) {
if (xvel == 0 && getOpenStatus() == Status.Middle)
close();
int l = getPaddingLeft(), t = getPaddingTop();
if (xvel < 0 && mDragEdge == DragEdge.Right)
l -= mDragDistance;
if (xvel > 0 && mDragEdge == DragEdge.Left)
l += mDragDistance;
if (yvel > 0 && mDragEdge == DragEdge.Top)
t += mDragDistance;
if (yvel < 0 && mDragEdge == DragEdge.Bottom)
t -= mDragDistance;
mDragHelper.smoothSlideViewTo(getSurfaceView(), l, t);
invalidate();
}
/**
* smoothly open surface.
*/
public void open() {
open(true, true);
}
public void open(boolean smooth) {
open(smooth, true);
}
public void open(boolean smooth, boolean notify) {
ViewGroup surface = getSurfaceView(), bottom = getBottomView();
int dx, dy;
Rect rect = computeSurfaceLayoutArea(true);
if (smooth) {
mDragHelper
.smoothSlideViewTo(getSurfaceView(), rect.left, rect.top);
} else {
dx = rect.left - surface.getLeft();
dy = rect.top - surface.getTop();
surface.layout(rect.left, rect.top, rect.right, rect.bottom);
if (getShowMode() == ShowMode.PullOut) {
Rect bRect = computeBottomLayoutAreaViaSurface(
ShowMode.PullOut, rect);
bottom.layout(bRect.left, bRect.top, bRect.right, bRect.bottom);
}
if (notify) {
dispatchRevealEvent(rect.left, rect.top, rect.right,
rect.bottom);
dispatchSwipeEvent(rect.left, rect.top, dx, dy);
} else {
safeBottomView();
}
}
invalidate();
}
/**
* smoothly close surface.
*/
public void close() {
close(true, true);
}
public void close(boolean smooth) {
close(smooth, true);
}
/**
* close surface
*
* @param smooth
* smoothly or not.
* @param notify
* if notify all the listeners.
*/
public void close(boolean smooth, boolean notify) {
ViewGroup surface = getSurfaceView();
int dx, dy;
if (smooth)
mDragHelper.smoothSlideViewTo(getSurfaceView(), getPaddingLeft(),
getPaddingTop());
else {
Rect rect = computeSurfaceLayoutArea(false);
dx = rect.left - surface.getLeft();
dy = rect.top - surface.getTop();
surface.layout(rect.left, rect.top, rect.right, rect.bottom);
if (notify) {
dispatchRevealEvent(rect.left, rect.top, rect.right,
rect.bottom);
dispatchSwipeEvent(rect.left, rect.top, dx, dy);
} else {
safeBottomView();
}
}
invalidate();
}
public void toggle() {
toggle(true);
}
public void toggle(boolean smooth) {
if (getOpenStatus() == Status.Open)
close(smooth);
else if (getOpenStatus() == Status.Close)
open(smooth);
}
/**
* a helper function to compute the Rect area that surface will hold in.
*
* @param open
* open status or close status.
* @return
*/
private Rect computeSurfaceLayoutArea(boolean open) {
int l = getPaddingLeft(), t = getPaddingTop();
if (open) {
if (mDragEdge == DragEdge.Left)
l = getPaddingLeft() + mDragDistance;
else if (mDragEdge == DragEdge.Right)
l = getPaddingLeft() - mDragDistance;
else if (mDragEdge == DragEdge.Top)
t = getPaddingTop() + mDragDistance;
else
t = getPaddingTop() - mDragDistance;
}
return new Rect(l, t, l + getMeasuredWidth(), t + getMeasuredHeight());
}
private Rect computeBottomLayoutAreaViaSurface(ShowMode mode,
Rect surfaceArea) {
Rect rect = surfaceArea;
int bl = rect.left, bt = rect.top, br = rect.right, bb = rect.bottom;
if (mode == ShowMode.PullOut) {
if (mDragEdge == DragEdge.Left)
bl = rect.left - mDragDistance;
else if (mDragEdge == DragEdge.Right)
bl = rect.right;
else if (mDragEdge == DragEdge.Top)
bt = rect.top - mDragDistance;
else
bt = rect.bottom;
if (mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right) {
bb = rect.bottom;
br = bl + getBottomView().getMeasuredWidth();
} else {
bb = bt + getBottomView().getMeasuredHeight();
br = rect.right;
}
} else if (mode == ShowMode.LayDown) {
if (mDragEdge == DragEdge.Left)
br = bl + mDragDistance;
else if (mDragEdge == DragEdge.Right)
bl = br - mDragDistance;
else if (mDragEdge == DragEdge.Top)
bb = bt + mDragDistance;
else
bt = bb - mDragDistance;
}
return new Rect(bl, bt, br, bb);
}
private Rect computeBottomLayDown(DragEdge dragEdge) {
int bl = getPaddingLeft(), bt = getPaddingTop();
int br, bb;
if (dragEdge == DragEdge.Right) {
bl = getMeasuredWidth() - mDragDistance;
} else if (dragEdge == DragEdge.Bottom) {
bt = getMeasuredHeight() - mDragDistance;
}
if (dragEdge == DragEdge.Left || dragEdge == DragEdge.Right) {
br = bl + mDragDistance;
bb = bt + getMeasuredHeight();
} else {
br = bl + getMeasuredWidth();
bb = bt + mDragDistance;
}
return new Rect(bl, bt, br, bb);
}
public void setOnDoubleClickListener(DoubleClickListener doubleClickListener) {
mDoubleClickListener = doubleClickListener;
}
public interface DoubleClickListener {
public void onDoubleClick(SwipeLayout layout, boolean surface);
}
private int dp2px(float dp) {
return (int) (dp
* getContext().getResources().getDisplayMetrics().density + 0.5f);
}
}