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/*
* Copyright (C) 2015 Xavi Rigau <xrigau@gmail.com>
* Copyright (C) 2015 Vincent Breitmoser <look@my.amazin.horse>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* From the droidcon anroid espresso repository.
* https://github.com/xrigau/droidcon-android-espresso/
*
*/
package org.sufficientlysecure.keychain.matcher;
import android.content.res.Resources;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import org.hamcrest.Description;
import org.hamcrest.TypeSafeMatcher;
public class DrawableMatcher extends TypeSafeMatcher<View> {
private final int mResourceId;
private final boolean mIgnoreFilters;
public DrawableMatcher(int resourceId, boolean ignoreFilters) {
super(View.class);
mResourceId = resourceId;
mIgnoreFilters = ignoreFilters;
}
private String resourceName = null;
private Drawable expectedDrawable = null;
@Override
public boolean matchesSafely(View target) {
if (expectedDrawable == null) {
loadDrawableFromResources(target.getResources());
}
if (invalidExpectedDrawable()) {
return false;
}
if (target instanceof ImageView) {
return hasImage((ImageView) target) || hasBackground(target);
}
if (target instanceof TextView) {
return hasCompoundDrawable((TextView) target) || hasBackground(target);
}
return hasBackground(target);
}
private void loadDrawableFromResources(Resources resources) {
try {
expectedDrawable = resources.getDrawable(mResourceId);
resourceName = resources.getResourceEntryName(mResourceId);
} catch (Resources.NotFoundException ignored) {
// view could be from a context unaware of the resource id.
}
}
private boolean invalidExpectedDrawable() {
return expectedDrawable == null;
}
private boolean hasImage(ImageView target) {
return isSameDrawable(target.getDrawable());
}
private boolean hasCompoundDrawable(TextView target) {
for (Drawable drawable : target.getCompoundDrawables()) {
if (isSameDrawable(drawable)) {
return true;
}
}
return false;
}
private boolean hasBackground(View target) {
return isSameDrawable(target.getBackground());
}
private boolean isSameDrawable(Drawable drawable) {
if (drawable == null) {
return false;
}
// if those are both bitmap drawables, compare their bitmaps (ignores color filters, which is what we want!)
if (mIgnoreFilters && drawable instanceof BitmapDrawable && expectedDrawable instanceof BitmapDrawable) {
return ((BitmapDrawable) drawable).getBitmap().sameAs((((BitmapDrawable) expectedDrawable).getBitmap()));
}
return expectedDrawable.getConstantState().equals(drawable.getConstantState());
}
@Override
public void describeTo(Description description) {
description.appendText("with drawable from resource id: ");
description.appendValue(mResourceId);
if (resourceName != null) {
description.appendText("[");
description.appendText(resourceName);
description.appendText("]");
}
}
public static DrawableMatcher withDrawable(int resourceId, boolean ignoreFilters) {
return new DrawableMatcher(resourceId, ignoreFilters);
}
public static DrawableMatcher withDrawable(int resourceId) {
return new DrawableMatcher(resourceId, true);
}
}
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