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package com.daimajia.swipe; // ww w.j av a 2 s . co m 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 java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class SwipeLayout extends FrameLayout { private ViewDragHelper mDragHelper; private int mDragDistance = 0; private DragEdge mDragEdge; private ShowMode mShowMode; private float mHorizontalSwipeOffset; private float mVerticalSwipeOffset; 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()); mHorizontalSwipeOffset =a.getDimension(R.styleable.SwipeLayout_horizontalSwipeOffset,0); mVerticalSwipeOffset =a.getDimension(R.styleable.SwipeLayout_verticalSwipeOffset,0); 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); } @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()-dp2px(mHorizontalSwipeOffset); else mDragDistance = getBottomView().getMeasuredHeight()-dp2px(mVerticalSwipeOffset); } 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-view.getFirstVisiblePosition()), 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); } }