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/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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 android.preference;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.widget.FrameLayout;
/**
* @hide
*/
public class PreferenceFrameLayout extends FrameLayout {
private static final int DEFAULT_TOP_PADDING = 0;
private static final int DEFAULT_BOTTOM_PADDING = 0;
private final int mTopPadding;
private final int mBottomPadding;
private boolean mPaddingApplied = false;
public PreferenceFrameLayout(Context context) {
this(context, null);
}
public PreferenceFrameLayout(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.preferenceFrameLayoutStyle);
}
public PreferenceFrameLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
TypedArray a = context.obtainStyledAttributes(attrs,
com.android.internal.R.styleable.PreferenceFrameLayout, defStyle, 0);
mTopPadding = (int) a.getDimension(
com.android.internal.R.styleable.PreferenceFrameLayout_topPadding,
DEFAULT_TOP_PADDING);
mBottomPadding = (int) a.getDimension(
com.android.internal.R.styleable.PreferenceFrameLayout_bottomPadding,
DEFAULT_BOTTOM_PADDING);
a.recycle();
}
@Override
public void addView(View child) {
int topPadding = getPaddingTop();
int bottomPadding = getPaddingBottom();
// Check on the id of the child before adding it.
if (child != null && child.getId() != com.android.internal.R.id.default_preference_layout) {
// Add the padding to the view group after determining if the padding already exists.
if (!mPaddingApplied) {
topPadding += mTopPadding;
bottomPadding += mBottomPadding;
mPaddingApplied = true;
}
} else {
if (mPaddingApplied) {
topPadding -= mTopPadding;
bottomPadding -= mBottomPadding;
mPaddingApplied = false;
}
}
int previousTop = getPaddingTop();
int previousBottom = getPaddingBottom();
if (previousTop != topPadding || previousBottom != bottomPadding) {
setPadding(getPaddingLeft(), topPadding, getPaddingRight(), bottomPadding);
}
super.addView(child);
}
}
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