package com.jayway.android.robotium.solo;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
/**
* Contains view methods. Examples are getViews(),
* getCurrentTextViews(), getCurrentImageViews().
*
* @author Renas Reda, renasreda@gmail.com
*
*/
class ViewFetcher {
private final ActivityUtils activityUtils;
private String windowManagerString;
/**
* Constructs this object.
*
* @param activityUtils the {@code ActivityUtils} instance
*
*/
public ViewFetcher(ActivityUtils activityUtils) {
this.activityUtils = activityUtils;
setWindowManagerString();
}
/**
* Returns the absolute top parent {@code View} in for a given {@code View}.
*
* @param view the {@code View} whose top parent is requested
* @return the top parent {@code View}
*/
public View getTopParent(View view) {
if (view.getParent() != null
&& view.getParent() instanceof android.view.View) {
return getTopParent((View) view.getParent());
} else {
return view;
}
}
/**
* Returns the scroll or list parent view
*
* @param view the view who's parent should be returned
* @return the parent scroll view, list view or null
*/
public View getScrollOrListParent(View view) {
if (!(view instanceof android.widget.AbsListView) && !(view instanceof android.widget.ScrollView) && !(view instanceof WebView)) {
try{
return getScrollOrListParent((View) view.getParent());
}catch(Exception e){
return null;
}
} else {
return view;
}
}
/**
* Returns views from the shown DecorViews.
*
* @param onlySufficientlyVisible if only sufficiently visible views should be returned
* @return all the views contained in the DecorViews
*/
public ArrayList<View> getAllViews(boolean onlySufficientlyVisible) {
final View[] views = getWindowDecorViews();
final ArrayList<View> allViews = new ArrayList<View>();
final View[] nonDecorViews = getNonDecorViews(views);
View view = null;
if(nonDecorViews != null){
for(int i = 0; i < nonDecorViews.length; i++){
view = nonDecorViews[i];
try {
addChildren(allViews, (ViewGroup)view, onlySufficientlyVisible);
} catch (Exception ignored) {}
if(view != null) allViews.add(view);
}
}
if (views != null && views.length > 0) {
view = getRecentDecorView(views);
try {
addChildren(allViews, (ViewGroup)view, onlySufficientlyVisible);
} catch (Exception ignored) {}
if(view != null) allViews.add(view);
}
return allViews;
}
/**
* Returns the most recent DecorView
*
* @param views the views to check
* @return the most recent DecorView
*/
public final View getRecentDecorView(View[] views) {
if(views == null)
return null;
final View[] decorViews = new View[views.length];
int i = 0;
View view;
for (int j = 0; j < views.length; j++) {
view = views[j];
if (view != null && view.getClass().getName()
.equals("com.android.internal.policy.impl.PhoneWindow$DecorView")) {
decorViews[i] = view;
i++;
}
}
return getRecentContainer(decorViews);
}
/**
* Returns the most recent view container
*
* @param views the views to check
* @return the most recent view container
*/
private final View getRecentContainer(View[] views) {
View container = null;
long drawingTime = 0;
View view;
for(int i = 0; i < views.length; i++){
view = views[i];
if (view != null && view.isShown() && view.hasWindowFocus() && view.getDrawingTime() > drawingTime) {
container = view;
drawingTime = view.getDrawingTime();
}
}
return container;
}
/**
* Returns all views that are non DecorViews
*
* @param views the views to check
* @return the non DecorViews
*/
private final View[] getNonDecorViews(View[] views) {
View[] decorViews = null;
if(views != null) {
decorViews = new View[views.length];
int i = 0;
View view;
for (int j = 0; j < views.length; j++) {
view = views[j];
if (view != null && !(view.getClass().getName()
.equals("com.android.internal.policy.impl.PhoneWindow$DecorView"))) {
decorViews[i] = view;
i++;
}
}
}
return decorViews;
}
/**
* Extracts all {@code View}s located in the currently active {@code Activity}, recursively.
*
* @param parent the {@code View} whose children should be returned, or {@code null} for all
* @param onlySufficientlyVisible if only sufficiently visible views should be returned
* @return all {@code View}s located in the currently active {@code Activity}, never {@code null}
*/
public ArrayList<View> getViews(View parent, boolean onlySufficientlyVisible) {
final ArrayList<View> views = new ArrayList<View>();
final View parentToUse;
if (parent == null){
return getAllViews(onlySufficientlyVisible);
}else{
parentToUse = parent;
views.add(parentToUse);
if (parentToUse instanceof ViewGroup) {
addChildren(views, (ViewGroup) parentToUse, onlySufficientlyVisible);
}
}
return views;
}
/**
* Adds all children of {@code viewGroup} (recursively) into {@code views}.
*
* @param views an {@code ArrayList} of {@code View}s
* @param viewGroup the {@code ViewGroup} to extract children from
* @param onlySufficientlyVisible if only sufficiently visible views should be returned
*/
private void addChildren(ArrayList<View> views, ViewGroup viewGroup, boolean onlySufficientlyVisible) {
if(viewGroup != null){
for (int i = 0; i < viewGroup.getChildCount(); i++) {
final View child = viewGroup.getChildAt(i);
if(onlySufficientlyVisible && isViewSufficientlyShown(child))
views.add(child);
else if(!onlySufficientlyVisible)
views.add(child);
if (child instanceof ViewGroup) {
addChildren(views, (ViewGroup) child, onlySufficientlyVisible);
}
}
}
}
/**
* Returns true if the view is sufficiently shown
*
* @param view the view to check
* @return true if the view is sufficiently shown
*/
public final boolean isViewSufficientlyShown(View view){
final int[] xyView = new int[2];
final int[] xyParent = new int[2];
if(view == null)
return false;
final float viewHeight = view.getHeight();
final View parent = getScrollOrListParent(view);
view.getLocationOnScreen(xyView);
if(parent == null){
xyParent[1] = 0;
}
else{
parent.getLocationOnScreen(xyParent);
}
if(xyView[1] + (viewHeight/2.0f) > getScrollListWindowHeight(view))
return false;
else if(xyView[1] + (viewHeight/2.0f) < xyParent[1])
return false;
return true;
}
/**
* Returns the height of the scroll or list view parent
* @param view the view who's parents height should be returned
* @return the height of the scroll or list view parent
*/
@SuppressWarnings("deprecation")
public float getScrollListWindowHeight(View view) {
final int[] xyParent = new int[2];
View parent = getScrollOrListParent(view);
final float windowHeight;
if(parent == null){
windowHeight = activityUtils.getCurrentActivity(false).getWindowManager()
.getDefaultDisplay().getHeight();
}
else{
parent.getLocationOnScreen(xyParent);
windowHeight = xyParent[1] + parent.getHeight();
}
parent = null;
return windowHeight;
}
/**
* Returns an {@code ArrayList} of {@code View}s of the specified {@code Class} located in the current
* {@code Activity}.
*
* @param classToFilterBy return all instances of this class, e.g. {@code Button.class} or {@code GridView.class}
* @return an {@code ArrayList} of {@code View}s of the specified {@code Class} located in the current {@code Activity}
*/
public <T extends View> ArrayList<T> getCurrentViews(Class<T> classToFilterBy) {
return getCurrentViews(classToFilterBy, null);
}
/**
* Returns an {@code ArrayList} of {@code View}s of the specified {@code Class} located under the specified {@code parent}.
*
* @param classToFilterBy return all instances of this class, e.g. {@code Button.class} or {@code GridView.class}
* @param parent the parent {@code View} for where to start the traversal
* @return an {@code ArrayList} of {@code View}s of the specified {@code Class} located under the specified {@code parent}
*/
public <T extends View> ArrayList<T> getCurrentViews(Class<T> classToFilterBy, View parent) {
ArrayList<T> filteredViews = new ArrayList<T>();
List<View> allViews = getViews(parent, true);
for(View view : allViews){
if (view != null && classToFilterBy.isAssignableFrom(view.getClass())) {
filteredViews.add(classToFilterBy.cast(view));
}
}
allViews = null;
return filteredViews;
}
/**
* Tries to guess which view is the most likely to be interesting. Returns
* the most recently drawn view, which presumably will be the one that the
* user was most recently interacting with.
*
* @param views A list of potentially interesting views, likely a collection
* of views from a set of types, such as [{@link Button},
* {@link TextView}] or [{@link ScrollView}, {@link ListView}]
* @param index the index of the view
* @return most recently drawn view, or null if no views were passed
*/
public final <T extends View> T getFreshestView(ArrayList<T> views){
final int[] locationOnScreen = new int[2];
T viewToReturn = null;
long drawingTime = 0;
if(views == null){
return null;
}
for(T view : views){
view.getLocationOnScreen(locationOnScreen);
if (locationOnScreen[0] < 0 )
continue;
if(view.getDrawingTime() > drawingTime && view.getHeight() > 0){
drawingTime = view.getDrawingTime();
viewToReturn = view;
}
}
views = null;
return viewToReturn;
}
private static Class<?> windowManager;
static{
try {
String windowManagerClassName;
if (android.os.Build.VERSION.SDK_INT >= 17) {
windowManagerClassName = "android.view.WindowManagerGlobal";
} else {
windowManagerClassName = "android.view.WindowManagerImpl";
}
windowManager = Class.forName(windowManagerClassName);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
} catch (SecurityException e) {
e.printStackTrace();
}
}
/**
* Returns the WindorDecorViews shown on the screen.
*
* @return the WindorDecorViews shown on the screen
*/
public View[] getWindowDecorViews()
{
Field viewsField;
Field instanceField;
try {
viewsField = windowManager.getDeclaredField("mViews");
instanceField = windowManager.getDeclaredField(windowManagerString);
viewsField.setAccessible(true);
instanceField.setAccessible(true);
Object instance = instanceField.get(null);
return (View[]) viewsField.get(instance);
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return null;
}
/**
* Sets the window manager string.
*/
private void setWindowManagerString(){
if (android.os.Build.VERSION.SDK_INT >= 17) {
windowManagerString = "sDefaultWindowManager";
} else if(android.os.Build.VERSION.SDK_INT >= 13) {
windowManagerString = "sWindowManager";
} else {
windowManagerString = "mWindowManager";
}
}
}