/*
* Copyright (C) 2013 47 Degrees, LLC
* http://47deg.com
* hello@47deg.com
*
* Copyright 2012 Roman Nurik
*
* 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.fortysevendeg.swipelistview;
import static com.nineoldandroids.view.ViewHelper.setAlpha;
import static com.nineoldandroids.view.ViewHelper.setTranslationX;
import static com.nineoldandroids.view.ViewPropertyAnimator.animate;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.nineoldandroids.animation.Animator;
import com.nineoldandroids.animation.AnimatorListenerAdapter;
import com.nineoldandroids.animation.ValueAnimator;
import com.nineoldandroids.view.ViewHelper;
import android.graphics.Rect;
import android.os.Build;
import android.os.Handler;
import android.support.v4.view.MotionEventCompat;
import android.util.Log;
import android.view.MotionEvent;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.ListView;
/**
* Touch listener impl for the SwipeListView
*/
public class SwipeListViewTouchListener implements View.OnTouchListener {
private static final int DISPLACE_CHOICE = 80;
private int swipeMode = SwipeListView.SWIPE_MODE_BOTH;
private boolean swipeOpenOnLongPress = true;
private boolean swipeClosesAllItemsWhenListMoves = true;
private int swipeFrontView = 0;
private int swipeBackView = 0;
private Rect rect = new Rect();
// Cached ViewConfiguration and system-wide constant values
private int slop;
private int minFlingVelocity;
private int maxFlingVelocity;
private long configShortAnimationTime;
private long animationTime;
private float leftOffset = 0;
private float rightOffset = 0;
private int swipeDrawableChecked = 0;
private int swipeDrawableUnchecked = 0;
// Fixed properties
private SwipeListView swipeListView;
private int viewWidth = 1; // 1 and not 0 to prevent dividing by zero
private List<PendingDismissData> pendingDismisses = new ArrayList<PendingDismissData>();
private int dismissAnimationRefCount = 0;
private float downX;
private boolean swiping;
private boolean swipingRight;
private VelocityTracker velocityTracker;
private int downPosition;
private View parentView;
private View frontView;
private View backView;
private boolean paused;
private int swipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;
private int swipeActionLeft = SwipeListView.SWIPE_ACTION_REVEAL;
private int swipeActionRight = SwipeListView.SWIPE_ACTION_REVEAL;
private List<Boolean> opened = new ArrayList<Boolean>();
private List<Boolean> openedRight = new ArrayList<Boolean>();
private boolean listViewMoving;
private List<Boolean> checked = new ArrayList<Boolean>();
private int oldSwipeActionRight;
private int oldSwipeActionLeft;
/**
* Constructor
*
* @param swipeListView
* SwipeListView
* @param swipeFrontView
* front view Identifier
* @param swipeBackView
* back view Identifier
*/
public SwipeListViewTouchListener(SwipeListView swipeListView, int swipeFrontView, int swipeBackView) {
this.swipeFrontView = swipeFrontView;
this.swipeBackView = swipeBackView;
ViewConfiguration vc = ViewConfiguration.get(swipeListView.getContext());
slop = vc.getScaledTouchSlop();
minFlingVelocity = vc.getScaledMinimumFlingVelocity();
maxFlingVelocity = vc.getScaledMaximumFlingVelocity();
configShortAnimationTime = swipeListView.getContext().getResources()
.getInteger(android.R.integer.config_shortAnimTime);
animationTime = configShortAnimationTime;
this.swipeListView = swipeListView;
}
/**
* Sets current item's parent view
*
* @param parentView
* Parent view
*/
private void setParentView(View parentView) {
this.parentView = parentView;
}
/**
* Sets current item's front view
*
* @param frontView
* Front view
*/
private void setFrontView(View frontView, final int childPosition) {
this.frontView = frontView;
frontView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
swipeListView.onClickFrontView(downPosition);
}
});
frontView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (swipeOpenOnLongPress) {
if (downPosition >= 0) {
openAnimate(childPosition);
}
} else {
swapChoiceState(childPosition);
}
return false;
}
});
}
/**
* Set current item's back view
*
* @param backView
*/
private void setBackView(View backView) {
this.backView = backView;
backView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
swipeListView.onClickBackView(downPosition);
}
});
}
/**
* @return true if the list is in motion
*/
public boolean isListViewMoving() {
return listViewMoving;
}
/**
* Sets animation time when the user drops the cell
*
* @param animationTime
* milliseconds
*/
public void setAnimationTime(long animationTime) {
if (animationTime > 0) {
this.animationTime = animationTime;
} else {
this.animationTime = configShortAnimationTime;
}
}
/**
* Sets the right offset
*
* @param rightOffset
* Offset
*/
public void setRightOffset(float rightOffset) {
this.rightOffset = rightOffset;
}
/**
* Set the left offset
*
* @param leftOffset
* Offset
*/
public void setLeftOffset(float leftOffset) {
this.leftOffset = leftOffset;
}
/**
* Set if all item opened will be close when the user move ListView
*
* @param swipeClosesAllItemsWhenListMoves
*/
public void setSwipeClosesAllItemsWhenListMoves(boolean swipeClosesAllItemsWhenListMoves) {
this.swipeClosesAllItemsWhenListMoves = swipeClosesAllItemsWhenListMoves;
}
/**
* Set if the user can open an item with long press on cell
*
* @param swipeOpenOnLongPress
*/
public void setSwipeOpenOnLongPress(boolean swipeOpenOnLongPress) {
this.swipeOpenOnLongPress = swipeOpenOnLongPress;
}
/**
* Sets the swipe mode
*
* @param swipeMode
*/
public void setSwipeMode(int swipeMode) {
this.swipeMode = swipeMode;
}
/**
* Check is swiping is enabled
*
* @return
*/
protected boolean isSwipeEnabled() {
return swipeMode != SwipeListView.SWIPE_MODE_NONE;
}
/**
* Return action on left
*
* @return Action
*/
public int getSwipeActionLeft() {
return swipeActionLeft;
}
/**
* Set action on left
*
* @param swipeActionLeft
* Action
*/
public void setSwipeActionLeft(int swipeActionLeft) {
this.swipeActionLeft = swipeActionLeft;
}
/**
* Return action on right
*
* @return Action
*/
public int getSwipeActionRight() {
return swipeActionRight;
}
/**
* Set action on right
*
* @param swipeActionRight
* Action
*/
public void setSwipeActionRight(int swipeActionRight) {
this.swipeActionRight = swipeActionRight;
}
/**
* Set drawable checked (only SWIPE_ACTION_CHOICE)
*
* @param swipeDrawableChecked
* drawable
*/
protected void setSwipeDrawableChecked(int swipeDrawableChecked) {
this.swipeDrawableChecked = swipeDrawableChecked;
}
/**
* Set drawable unchecked (only SWIPE_ACTION_CHOICE)
*
* @param swipeDrawableUnchecked
* drawable
*/
protected void setSwipeDrawableUnchecked(int swipeDrawableUnchecked) {
this.swipeDrawableUnchecked = swipeDrawableUnchecked;
}
/**
* Adds new items when adapter is modified
*/
public void resetItems() {
if (swipeListView.getAdapter() != null) {
int count = swipeListView.getAdapter().getCount();
for (int i = opened.size(); i <= count; i++) {
opened.add(false);
openedRight.add(false);
checked.add(false);
}
}
}
/**
* Open item
*
* @param position
* Position of list
*/
protected void openAnimate(int position) {
final View child = swipeListView.getChildAt(position - swipeListView.getFirstVisiblePosition())
.findViewById(swipeFrontView);
if (child != null) {
openAnimate(child, position);
}
}
/**
* Close item
*
* @param position
* Position of list
*/
protected void closeAnimate(int position) {
if (swipeListView != null) {
int firstVisibleChildPosition = swipeListView.getFirstVisiblePosition();
final View childContainer = swipeListView.getChildAt(position - firstVisibleChildPosition);
if (childContainer != null) {
final View child = childContainer.findViewById(swipeFrontView);
if (child != null) {
closeAnimate(child, position);
}
}
}
}
/**
* Swap choice state in item
*
* @param position
* position of list
*/
private void swapChoiceState(int position) {
int lastCount = getCountSelected();
boolean lastChecked = checked.get(position);
checked.set(position, !lastChecked);
int count = lastChecked ? lastCount - 1 : lastCount + 1;
if (lastCount == 0 && count == 1) {
swipeListView.onChoiceStarted();
closeOpenedItems();
setActionsTo(SwipeListView.SWIPE_ACTION_CHOICE);
}
if (lastCount == 1 && count == 0) {
swipeListView.onChoiceEnded();
returnOldActions();
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
swipeListView.setItemChecked(position, !lastChecked);
}
swipeListView.onChoiceChanged(position, !lastChecked);
reloadChoiceStateInView(frontView, position);
}
/**
* Unselected choice state in item
*/
protected void unselectedChoiceStates() {
int start = swipeListView.getFirstVisiblePosition();
int end = swipeListView.getLastVisiblePosition();
for (int i = 0; i < checked.size(); i++) {
if (checked.get(i) && i >= start && i <= end) {
reloadChoiceStateInView(swipeListView.getChildAt(i - start).findViewById(swipeFrontView), i);
}
checked.set(i, false);
}
swipeListView.onChoiceEnded();
returnOldActions();
}
/**
* Dismiss an item.
*
* @param position
* is the position of the item to delete.
* @return 0 if the item is not visible. Otherwise return the height of the
* cell to dismiss.
*/
protected int dismiss(int position) {
opened.remove(position);
checked.remove(position);
int start = swipeListView.getFirstVisiblePosition();
int end = swipeListView.getLastVisiblePosition();
View view = swipeListView.getChildAt(position - start);
++dismissAnimationRefCount;
if (position >= start && position <= end) {
performDismiss(view, position, false);
return view.getHeight();
} else {
pendingDismisses.add(new PendingDismissData(position, null));
return 0;
}
}
/**
* Draw cell for display if item is selected or not
*
* @param frontView
* view to draw
* @param position
* position in list
*/
protected void reloadChoiceStateInView(View frontView, int position) {
if (isChecked(position)) {
if (swipeDrawableChecked > 0)
frontView.setBackgroundResource(swipeDrawableChecked);
} else {
if (swipeDrawableUnchecked > 0)
frontView.setBackgroundResource(swipeDrawableUnchecked);
}
}
/**
* Reset the state of front view when the it's recycled by ListView
*
* @param frontView
* view to re-draw
*/
protected void reloadSwipeStateInView(View frontView, int position) {
if (!opened.get(position)) {
setTranslationX(frontView, 0.0f);
} else {
if (openedRight.get(position)) {
setTranslationX(frontView, swipeListView.getWidth());
} else {
setTranslationX(frontView, -swipeListView.getWidth());
}
}
}
/**
* Get if item is selected
*
* @param position
* position in list
* @return
*/
protected boolean isChecked(int position) {
return position < checked.size() && checked.get(position);
}
/**
* Count selected
*
* @return
*/
protected int getCountSelected() {
int count = 0;
for (int i = 0; i < checked.size(); i++) {
if (checked.get(i)) {
count++;
}
}
if (SwipeListView.DEBUG) {
Log.d(SwipeListView.TAG, "selected: " + count);
}
return count;
}
/**
* Count opened
*
* @return
*/
protected int getCountOpened() {
int count = 0;
for (int i = 0; i < opened.size(); i++) {
if (opened.get(i)) {
count++;
}
}
if (SwipeListView.DEBUG) {
Log.d(SwipeListView.TAG, "selected: " + count);
}
return count;
}
/**
* Get positions selected
*
* @return
*/
protected List<Integer> getPositionsSelected() {
List<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < checked.size(); i++) {
if (checked.get(i)) {
list.add(i);
}
}
return list;
}
/**
* Open item
*
* @param view
* affected view
* @param position
* Position of list
*/
private void openAnimate(View view, int position) {
if (!opened.get(position)) {
generateRevealAnimate(view, true, false, position);
}
}
/**
* Close item
*
* @param view
* affected view
* @param position
* Position of list
*/
private void closeAnimate(View view, int position) {
if (opened.get(position)) {
generateRevealAnimate(view, true, false, position);
}
}
/**
* Create animation
*
* @param view
* affected view
* @param swap
* If state should change. If "false" returns to the original
* position
* @param swapRight
* If swap is true, this parameter tells if move is to the right
* or left
* @param position
* Position of list
*/
private void generateAnimate(final View view, final boolean swap, final boolean swapRight, final int position) {
if (SwipeListView.DEBUG) {
Log.d(SwipeListView.TAG, "swap: " + swap + " - swapRight: " + swapRight + " - position: " + position);
}
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_REVEAL) {
generateRevealAnimate(view, swap, swapRight, position);
}
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_DISMISS) {
generateDismissAnimate(parentView, swap, swapRight, position);
}
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
generateChoiceAnimate(view, position);
}
}
/**
* Create choice animation
*
* @param view
* affected view
* @param position
* list position
*/
private void generateChoiceAnimate(final View view, final int position) {
animate(view).translationX(0).setDuration(animationTime).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
swipeListView.resetScrolling();
resetCell();
}
});
}
/**
* Create dismiss animation
*
* @param view
* affected view
* @param swap
* If will change state. If is "false" returns to the original
* position
* @param swapRight
* If swap is true, this parameter tells if move is to the right
* or left
* @param position
* Position of list
*/
private void generateDismissAnimate(final View view, final boolean swap, final boolean swapRight,
final int position) {
int moveTo = 0;
if (opened.get(position)) {
if (!swap) {
moveTo = openedRight.get(position) ? (int) (viewWidth - rightOffset) : (int) (-viewWidth + leftOffset);
}
} else {
if (swap) {
moveTo = swapRight ? (int) (viewWidth - rightOffset) : (int) (-viewWidth + leftOffset);
}
}
int alpha = 1;
if (swap) {
++dismissAnimationRefCount;
alpha = 0;
}
animate(view).translationX(moveTo).alpha(alpha).setDuration(animationTime)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
if (swap) {
closeOpenedItems();
performDismiss(view, position, true);
}
resetCell();
}
});
}
/**
* Create reveal animation
*
* @param view
* affected view
* @param swap
* If will change state. If "false" returns to the original
* position
* @param swapRight
* If swap is true, this parameter tells if movement is toward
* right or left
* @param position
* list position
*/
private void generateRevealAnimate(final View view, final boolean swap, final boolean swapRight,
final int position) {
int moveTo = 0;
if (opened.get(position)) {
if (!swap) {
moveTo = openedRight.get(position) ? (int) (leftOffset) : (int) (-rightOffset);
}
} else {
if (swap) {
// moveTo = swapRight ? (int) (viewWidth - rightOffset) : (int)
// (-viewWidth + leftOffset);
moveTo = swapRight ? (int) (leftOffset) : (int) (-rightOffset);
}
}
animate(view).translationX(moveTo).setDuration(animationTime).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
swipeListView.resetScrolling();
if (swap) {
boolean aux = !opened.get(position);
opened.set(position, aux);
if (aux) {
swipeListView.onOpened(position, swapRight);
openedRight.set(position, swapRight);
} else {
swipeListView.onClosed(position, openedRight.get(position));
}
}
resetCell();
}
});
}
private void resetCell() {
if (downPosition != ListView.INVALID_POSITION) {
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
backView.setVisibility(View.VISIBLE);
}
frontView.setClickable(opened.get(downPosition));
frontView.setLongClickable(opened.get(downPosition));
frontView = null;
backView = null;
downPosition = ListView.INVALID_POSITION;
}
}
/**
* Set enabled
*
* @param enabled
*/
public void setEnabled(boolean enabled) {
paused = !enabled;
}
/**
* Return ScrollListener for ListView
*
* @return OnScrollListener
*/
public AbsListView.OnScrollListener makeScrollListener() {
return new AbsListView.OnScrollListener() {
private boolean isFirstItem = false;
private boolean isLastItem = false;
@Override
public void onScrollStateChanged(AbsListView absListView, int scrollState) {
setEnabled(scrollState != AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL);
if (swipeClosesAllItemsWhenListMoves && scrollState == SCROLL_STATE_TOUCH_SCROLL) {
closeOpenedItems();
}
if (scrollState == SCROLL_STATE_TOUCH_SCROLL) {
listViewMoving = true;
setEnabled(false);
}
if (scrollState != AbsListView.OnScrollListener.SCROLL_STATE_FLING
&& scrollState != SCROLL_STATE_TOUCH_SCROLL) {
listViewMoving = false;
downPosition = ListView.INVALID_POSITION;
swipeListView.resetScrolling();
new Handler().postDelayed(new Runnable() {
public void run() {
setEnabled(true);
}
}, 500);
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
if (isFirstItem) {
boolean onSecondItemList = firstVisibleItem == 1;
if (onSecondItemList) {
isFirstItem = false;
}
} else {
boolean onFirstItemList = firstVisibleItem == 0;
if (onFirstItemList) {
isFirstItem = true;
swipeListView.onFirstListItem();
}
}
if (isLastItem) {
boolean onBeforeLastItemList = firstVisibleItem + visibleItemCount == totalItemCount - 1;
if (onBeforeLastItemList) {
isLastItem = false;
}
} else {
boolean onLastItemList = firstVisibleItem + visibleItemCount >= totalItemCount;
if (onLastItemList) {
isLastItem = true;
swipeListView.onLastListItem();
}
}
}
};
}
/**
* Close all opened items
*/
void closeOpenedItems() {
if (opened != null) {
int start = swipeListView.getFirstVisiblePosition();
int end = swipeListView.getLastVisiblePosition();
for (int i = start; i <= end; i++) {
if (opened.get(i)) {
closeAnimate(swipeListView.getChildAt(i - start).findViewById(swipeFrontView), i);
}
}
}
}
/**
* @see View.OnTouchListener#onTouch(android.view.View,
* android.view.MotionEvent)
*/
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (!isSwipeEnabled()) {
return false;
}
if (viewWidth < 2) {
viewWidth = swipeListView.getWidth();
}
switch (MotionEventCompat.getActionMasked(motionEvent)) {
case MotionEvent.ACTION_DOWN: {
if (paused && downPosition != ListView.INVALID_POSITION) {
return false;
}
swipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;
int childCount = swipeListView.getChildCount();
int[] listViewCoords = new int[2];
swipeListView.getLocationOnScreen(listViewCoords);
int x = (int) motionEvent.getRawX() - listViewCoords[0];
int y = (int) motionEvent.getRawY() - listViewCoords[1];
View child;
for (int i = 0; i < childCount; i++) {
child = swipeListView.getChildAt(i);
child.getHitRect(rect);
int childPosition = swipeListView.getPositionForView(child);
// dont allow swiping if this is on the header or footer or
// IGNORE_ITEM_VIEW_TYPE or enabled is false on the adapter
boolean allowSwipe = swipeListView.getAdapter().isEnabled(childPosition)
&& swipeListView.getAdapter().getItemViewType(childPosition) >= 0;
if (allowSwipe && rect.contains(x, y)) {
setParentView(child);
setFrontView(child.findViewById(swipeFrontView), childPosition);
downX = motionEvent.getRawX();
downPosition = childPosition;
frontView.setClickable(!opened.get(downPosition));
frontView.setLongClickable(!opened.get(downPosition));
velocityTracker = VelocityTracker.obtain();
velocityTracker.addMovement(motionEvent);
if (swipeBackView > 0) {
setBackView(child.findViewById(swipeBackView));
}
break;
}
}
view.onTouchEvent(motionEvent);
return true;
}
case MotionEvent.ACTION_UP: {
if (velocityTracker == null || !swiping || downPosition == ListView.INVALID_POSITION) {
break;
}
float deltaX = motionEvent.getRawX() - downX;
velocityTracker.addMovement(motionEvent);
velocityTracker.computeCurrentVelocity(1000);
float velocityX = Math.abs(velocityTracker.getXVelocity());
if (!opened.get(downPosition)) {
if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && velocityTracker.getXVelocity() > 0) {
velocityX = 0;
}
if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && velocityTracker.getXVelocity() < 0) {
velocityX = 0;
}
}
float velocityY = Math.abs(velocityTracker.getYVelocity());
boolean swap = false;
boolean swapRight = false;
if (minFlingVelocity <= velocityX && velocityX <= maxFlingVelocity && velocityY * 2 < velocityX) {
swapRight = velocityTracker.getXVelocity() > 0;
if (SwipeListView.DEBUG) {
Log.d(SwipeListView.TAG, "swapRight: " + swapRight + " - swipingRight: " + swipingRight);
}
if (swapRight != swipingRight && swipeActionLeft != swipeActionRight) {
swap = false;
} else if (opened.get(downPosition) && openedRight.get(downPosition) && swapRight) {
swap = false;
} else if (opened.get(downPosition) && !openedRight.get(downPosition) && !swapRight) {
swap = false;
} else {
swap = true;
}
} else if (Math.abs(deltaX) > viewWidth / 2) {
swap = true;
swapRight = deltaX > 0;
}
generateAnimate(frontView, swap, swapRight, downPosition);
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
swapChoiceState(downPosition);
}
velocityTracker.recycle();
velocityTracker = null;
downX = 0;
// change clickable front view
// if (swap) {
// frontView.setClickable(opened.get(downPosition));
// frontView.setLongClickable(opened.get(downPosition));
// }
swiping = false;
break;
}
case MotionEvent.ACTION_MOVE: {
if (velocityTracker == null || paused || downPosition == ListView.INVALID_POSITION) {
break;
}
velocityTracker.addMovement(motionEvent);
velocityTracker.computeCurrentVelocity(1000);
float velocityX = Math.abs(velocityTracker.getXVelocity());
float velocityY = Math.abs(velocityTracker.getYVelocity());
float deltaX = motionEvent.getRawX() - downX;
float deltaMode = Math.abs(deltaX);
int swipeMode = this.swipeMode;
int changeSwipeMode = swipeListView.changeSwipeMode(downPosition);
if (changeSwipeMode >= 0) {
swipeMode = changeSwipeMode;
}
if (swipeMode == SwipeListView.SWIPE_MODE_NONE) {
deltaMode = 0;
} else if (swipeMode != SwipeListView.SWIPE_MODE_BOTH) {
if (opened.get(downPosition)) {
if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX < 0) {
deltaMode = 0;
} else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX > 0) {
deltaMode = 0;
}
} else {
if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX > 0) {
deltaMode = 0;
} else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX < 0) {
deltaMode = 0;
}
}
}
if (deltaMode > slop && swipeCurrentAction == SwipeListView.SWIPE_ACTION_NONE && velocityY < velocityX) {
swiping = true;
swipingRight = (deltaX > 0);
if (SwipeListView.DEBUG) {
Log.d(SwipeListView.TAG, "deltaX: " + deltaX + " - swipingRight: " + swipingRight);
}
if (opened.get(downPosition)) {
swipeListView.onStartClose(downPosition, swipingRight);
swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
} else {
if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_DISMISS) {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
} else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_DISMISS) {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
} else if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_CHOICE) {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
} else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_CHOICE) {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
} else {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
}
swipeListView.onStartOpen(downPosition, swipeCurrentAction, swipingRight);
}
swipeListView.requestDisallowInterceptTouchEvent(true);
MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (MotionEventCompat
.getActionIndex(motionEvent) << MotionEventCompat.ACTION_POINTER_INDEX_SHIFT));
swipeListView.onTouchEvent(cancelEvent);
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
backView.setVisibility(View.GONE);
}
}
if (swiping && downPosition != ListView.INVALID_POSITION) {
if (opened.get(downPosition)) {
deltaX += openedRight.get(downPosition) ? viewWidth - rightOffset
: -viewWidth + (viewWidth - rightOffset);
}
move(deltaX);
return true;
}
break;
}
}
return false;
}
private void setActionsTo(int action) {
oldSwipeActionRight = swipeActionRight;
oldSwipeActionLeft = swipeActionLeft;
swipeActionRight = action;
swipeActionLeft = action;
}
protected void returnOldActions() {
swipeActionRight = oldSwipeActionRight;
swipeActionLeft = oldSwipeActionLeft;
}
/**
* Moves the view
*
* @param deltaX
* delta
*/
public void move(float deltaX) {
swipeListView.onMove(downPosition, deltaX);
float posX = ViewHelper.getX(frontView);
if (opened.get(downPosition)) {
posX += openedRight.get(downPosition) ? -leftOffset : -rightOffset;
}
if (posX > 0 && !swipingRight) {
if (SwipeListView.DEBUG) {
Log.d(SwipeListView.TAG, "change to right");
}
swipingRight = !swipingRight;
swipeCurrentAction = swipeActionRight;
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
backView.setVisibility(View.GONE);
} else {
backView.setVisibility(View.VISIBLE);
}
}
if (posX < 0 && swipingRight) {
if (SwipeListView.DEBUG) {
Log.d(SwipeListView.TAG, "change to left");
}
swipingRight = !swipingRight;
swipeCurrentAction = swipeActionLeft;
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
backView.setVisibility(View.GONE);
} else {
backView.setVisibility(View.VISIBLE);
}
}
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_DISMISS) {
setTranslationX(parentView, deltaX);
setAlpha(parentView, Math.max(0f, Math.min(1f, 1f - 2f * Math.abs(deltaX) / viewWidth)));
} else if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
if ((swipingRight && deltaX > 0 && posX < DISPLACE_CHOICE)
|| (!swipingRight && deltaX < 0 && posX > -DISPLACE_CHOICE)
|| (swipingRight && deltaX < DISPLACE_CHOICE) || (!swipingRight && deltaX > -DISPLACE_CHOICE)) {
setTranslationX(frontView, deltaX);
}
} else {
setTranslationX(frontView, deltaX);
}
}
/**
* Class that saves pending dismiss data
*/
class PendingDismissData implements Comparable<PendingDismissData> {
public int position;
public View view;
public PendingDismissData(int position, View view) {
this.position = position;
this.view = view;
}
@Override
public int compareTo(PendingDismissData other) {
// Sort by descending position
return other.position - position;
}
}
/**
* Perform dismiss action
*
* @param dismissView
* View
* @param dismissPosition
* Position of list
*/
protected void performDismiss(final View dismissView, final int dismissPosition, boolean doPendingDismiss) {
enableDisableViewGroup((ViewGroup) dismissView, false);
final ViewGroup.LayoutParams lp = dismissView.getLayoutParams();
final int originalHeight = dismissView.getHeight();
ValueAnimator animator = ValueAnimator.ofInt(originalHeight, 1).setDuration(animationTime);
if (doPendingDismiss) {
animator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
--dismissAnimationRefCount;
if (dismissAnimationRefCount == 0) {
removePendingDismisses(originalHeight);
}
}
});
}
animator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
enableDisableViewGroup((ViewGroup) dismissView, true);
}
});
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
lp.height = (Integer) valueAnimator.getAnimatedValue();
dismissView.setLayoutParams(lp);
}
});
pendingDismisses.add(new PendingDismissData(dismissPosition, dismissView));
animator.start();
}
/**
* Remove all pending dismisses.
*/
protected void resetPendingDismisses() {
pendingDismisses.clear();
}
/**
* Will call {@link #removePendingDismisses(int)} in animationTime + 100 ms.
*
* @param originalHeight
* will be used to rest the cells height.
*/
protected void handlerPendingDismisses(final int originalHeight) {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
removePendingDismisses(originalHeight);
}
}, animationTime + 100);
}
/**
* Will delete all pending dismisses. Will call callback onDismiss for all
* pending dismisses. Will reset all cell height to originalHeight.
*
* @param originalHeight
* is the height of the cell before animation.
*/
private void removePendingDismisses(int originalHeight) {
// No active animations, process all pending dismisses.
// Sort by descending position
Collections.sort(pendingDismisses);
int[] dismissPositions = new int[pendingDismisses.size()];
for (int i = pendingDismisses.size() - 1; i >= 0; i--) {
dismissPositions[i] = pendingDismisses.get(i).position;
}
swipeListView.onDismiss(dismissPositions);
ViewGroup.LayoutParams lp;
for (PendingDismissData pendingDismiss : pendingDismisses) {
// Reset view presentation
if (pendingDismiss.view != null) {
setAlpha(pendingDismiss.view, 1f);
setTranslationX(pendingDismiss.view, 0);
lp = pendingDismiss.view.getLayoutParams();
lp.height = originalHeight;
pendingDismiss.view.setLayoutParams(lp);
}
}
resetPendingDismisses();
}
public static void enableDisableViewGroup(ViewGroup viewGroup, boolean enabled) {
int childCount = viewGroup.getChildCount();
for (int i = 0; i < childCount; i++) {
View view = viewGroup.getChildAt(i);
view.setEnabled(enabled);
if (view instanceof ViewGroup) {
enableDisableViewGroup((ViewGroup) view, enabled);
}
}
}
}