/*
* Copyright 2012 GitHub Inc.
*
* 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.github.mobile.ui;
import static android.os.Build.VERSION.SDK_INT;
import static android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH;
import android.content.Context;
import android.util.AttributeSet;
/**
* Web view extension with scrolling fixes
*/
public class WebView extends android.webkit.WebView {
/**
* @param context
* @param attrs
* @param defStyle
* @param privateBrowsing
*/
public WebView(final Context context, final AttributeSet attrs,
final int defStyle, final boolean privateBrowsing) {
super(context, attrs, defStyle, privateBrowsing);
}
/**
* @param context
* @param attrs
* @param defStyle
*/
public WebView(final Context context, final AttributeSet attrs,
final int defStyle) {
super(context, attrs, defStyle);
}
/**
* @param context
* @param attrs
*/
public WebView(final Context context, final AttributeSet attrs) {
super(context, attrs);
}
/**
* @param context
*/
public WebView(final Context context) {
super(context);
}
private boolean canScrollCodeHorizontally(final int direction) {
final int range = computeHorizontalScrollRange()
- computeHorizontalScrollExtent();
if (range == 0)
return false;
if (direction < 0)
return computeHorizontalScrollOffset() > 0;
else
return computeHorizontalScrollOffset() < range - 1;
}
@Override
public boolean canScrollHorizontally(final int direction) {
if (SDK_INT >= ICE_CREAM_SANDWICH)
return super.canScrollHorizontally(direction);
else
return canScrollCodeHorizontally(direction);
}
}