package com.jayway.android.robotium.solo;
import java.util.ArrayList;
import junit.framework.Assert;
import android.app.Instrumentation;
import android.os.SystemClock;
import android.view.MotionEvent;
import android.view.View;
import android.webkit.WebView;
import android.widget.AbsListView;
import android.widget.GridView;
import android.widget.ListView;
import android.widget.ScrollView;
/**
* Contains scroll methods. Examples are scrollDown(), scrollUpList(),
* scrollToSide().
*
* @author Renas Reda, renasreda@gmail.com
*
*/
class Scroller {
public static final int DOWN = 0;
public static final int UP = 1;
public enum Side {LEFT, RIGHT}
private boolean canScroll = false;
private final Instrumentation inst;
private final ActivityUtils activityUtils;
private final ViewFetcher viewFetcher;
private final Sleeper sleeper;
/**
* Constructs this object.
*
* @param inst the {@code Instrumentation} instance.
* @param activityUtils the {@code ActivityUtils} instance.
* @param viewFetcher the {@code ViewFetcher} instance.
* @param sleeper the {@code Sleeper} instance
*/
public Scroller(Instrumentation inst, ActivityUtils activityUtils, ViewFetcher viewFetcher, Sleeper sleeper) {
this.inst = inst;
this.activityUtils = activityUtils;
this.viewFetcher = viewFetcher;
this.sleeper = sleeper;
}
/**
* Simulate touching a specific location and dragging to a new location.
*
* This method was copied from {@code TouchUtils.java} in the Android Open Source Project, and modified here.
*
* @param fromX X coordinate of the initial touch, in screen coordinates
* @param toX Xcoordinate of the drag destination, in screen coordinates
* @param fromY X coordinate of the initial touch, in screen coordinates
* @param toY Y coordinate of the drag destination, in screen coordinates
* @param stepCount How many move steps to include in the drag
*/
public void drag(float fromX, float toX, float fromY, float toY,
int stepCount) {
long downTime = SystemClock.uptimeMillis();
long eventTime = SystemClock.uptimeMillis();
float y = fromY;
float x = fromX;
float yStep = (toY - fromY) / stepCount;
float xStep = (toX - fromX) / stepCount;
MotionEvent event = MotionEvent.obtain(downTime, eventTime,MotionEvent.ACTION_DOWN, fromX, fromY, 0);
try {
inst.sendPointerSync(event);
} catch (SecurityException ignored) {}
for (int i = 0; i < stepCount; ++i) {
y += yStep;
x += xStep;
eventTime = SystemClock.uptimeMillis();
event = MotionEvent.obtain(downTime, eventTime,MotionEvent.ACTION_MOVE, x, y, 0);
try {
inst.sendPointerSync(event);
} catch (SecurityException ignored) {}
}
eventTime = SystemClock.uptimeMillis();
event = MotionEvent.obtain(downTime, eventTime, MotionEvent.ACTION_UP,toX, toY, 0);
try {
inst.sendPointerSync(event);
} catch (SecurityException ignored) {}
}
/**
* Scrolls a ScrollView.
*
* @param direction the direction to be scrolled
* @return {@code true} if scrolling occurred, false if it did not
*/
private boolean scrollScrollView(final ScrollView view, int direction){
if(view == null){
return false;
}
int height = view.getHeight();
height--;
int scrollTo = -1;
if (direction == DOWN) {
scrollTo = height;
}
else if (direction == UP) {
scrollTo = -height;
}
int originalY = view.getScrollY();
final int scrollAmount = scrollTo;
inst.runOnMainSync(new Runnable(){
public void run(){
view.scrollBy(0, scrollAmount);
}
});
if (originalY == view.getScrollY()) {
return false;
}
else{
return true;
}
}
/**
* Scrolls a ScrollView to top or bottom.
*
* @param direction the direction to be scrolled
*/
private void scrollScrollViewAllTheWay(final ScrollView view, final int direction) {
while(scrollScrollView(view, direction));
}
/**
* scrolls up or down.
*
* @param direction the direction in which to scroll
* @return {@code true} if more scrolling can be done
*/
public boolean scroll(int direction) {
return scroll(direction, false);
}
/**
* Scrolls up and down.
*
* @param direction the direction in which to scroll
* @param allTheWay <code>true</code> if the view should be scrolled to the beginning or end,
* <code>false</code> to scroll one page up or down.
* @return {@code true} if more scrolling can be done
*/
public boolean scroll(int direction, boolean allTheWay) {
final ArrayList<View> viewList = RobotiumUtils.
removeInvisibleViews(viewFetcher.getAllViews(true));
@SuppressWarnings("unchecked")
ArrayList<View> views = RobotiumUtils.filterViewsToSet(new Class[] { ListView.class,
ScrollView.class, GridView.class, WebView.class}, viewList);
View view = viewFetcher.getFreshestView(views);
if (view == null)
{
return false;
}
if (view instanceof AbsListView) {
return scrollList((AbsListView)view, direction, allTheWay);
}
if (view instanceof ScrollView) {
if (allTheWay) {
scrollScrollViewAllTheWay((ScrollView) view, direction);
return false;
} else {
return scrollScrollView((ScrollView)view, direction);
}
}
if(view instanceof WebView){
return scrollWebView((WebView)view, direction, allTheWay);
}
return false;
}
/**
* Scrolls a WebView.
*
* @param webView the WebView to scroll
* @param direction the direction to scroll
* @param allTheWay {@code true} to scroll the view all the way up or down, {@code false} to scroll one page up or down or down.
* @return {@code true} if more scrolling can be done
*/
public boolean scrollWebView(final WebView webView, int direction, final boolean allTheWay){
if (direction == DOWN) {
inst.runOnMainSync(new Runnable(){
public void run(){
canScroll = webView.pageDown(allTheWay);
}
});
}
if(direction == UP){
inst.runOnMainSync(new Runnable(){
public void run(){
canScroll = webView.pageUp(allTheWay);
}
});
}
return canScroll;
}
/**
* Scrolls a list.
*
* @param absListView the list to be scrolled
* @param direction the direction to be scrolled
* @param allTheWay {@code true} to scroll the view all the way up or down, {@code false} to scroll one page up or down
* @return {@code true} if more scrolling can be done
*/
public <T extends AbsListView> boolean scrollList(T absListView, int direction, boolean allTheWay) {
if(absListView == null){
return false;
}
if (direction == DOWN) {
if (allTheWay) {
scrollListToLine(absListView, absListView.getCount()-1);
return false;
}
if (absListView.getLastVisiblePosition() >= absListView.getCount()-1) {
scrollListToLine(absListView, absListView.getLastVisiblePosition());
return false;
}
if(absListView.getFirstVisiblePosition() != absListView.getLastVisiblePosition())
scrollListToLine(absListView, absListView.getLastVisiblePosition());
else
scrollListToLine(absListView, absListView.getFirstVisiblePosition()+1);
} else if (direction == UP) {
if (allTheWay || absListView.getFirstVisiblePosition() < 2) {
scrollListToLine(absListView, 0);
return false;
}
final int lines = absListView.getLastVisiblePosition() - absListView.getFirstVisiblePosition();
int lineToScrollTo = absListView.getFirstVisiblePosition() - lines;
if(lineToScrollTo == absListView.getLastVisiblePosition())
lineToScrollTo--;
if(lineToScrollTo < 0)
lineToScrollTo = 0;
scrollListToLine(absListView, lineToScrollTo);
}
sleeper.sleep();
return true;
}
/**
* Scroll the list to a given line
*
* @param view the {@link AbsListView} to scroll
* @param line the line to scroll to
*/
public <T extends AbsListView> void scrollListToLine(final T view, final int line){
if(view == null)
Assert.assertTrue("AbsListView is null!", false);
final int lineToMoveTo;
if(view instanceof GridView)
lineToMoveTo = line+1;
else
lineToMoveTo = line;
inst.runOnMainSync(new Runnable(){
public void run(){
view.setSelection(lineToMoveTo);
}
});
}
/**
* Scrolls horizontally.
*
* @param side the side to which to scroll; {@link Side#RIGHT} or {@link Side#LEFT}
*/
@SuppressWarnings("deprecation")
public void scrollToSide(Side side) {
int screenHeight = activityUtils.getCurrentActivity().getWindowManager().getDefaultDisplay()
.getHeight();
int screenWidth = activityUtils.getCurrentActivity(false).getWindowManager().getDefaultDisplay()
.getWidth();
float x = screenWidth * 0.55f;
float y = screenHeight / 2.0f;
if (side == Side.LEFT)
drag(0, x, y, y, 40);
else if (side == Side.RIGHT)
drag(x, 0, y, y, 40);
}
/**
* Scrolls view horizontally.
*
* @param view the view to scroll
* @param side the side to which to scroll; {@link Side#RIGHT} or {@link Side#LEFT}
*/
public void scrollViewToSide(View view, Side side) {
int[] corners = new int[2];
view.getLocationOnScreen(corners);
int viewHeight = view.getHeight();
int viewWidth = view.getWidth();
float x = corners[0] + viewWidth * 0.55f;
float y = corners[1] + viewHeight / 2.0f;
if (side == Side.LEFT)
drag(corners[0], x, y, y, 40);
else if (side == Side.RIGHT)
drag(x, corners[0], y, y, 40);
}
}