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/*
* Copyright (C) 2016 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 com.android.contacts.common.util;
import android.content.res.Resources;
import android.view.View;
import android.widget.ListView;
import com.android.dialer.contacts.resources.R;
import com.android.dialer.util.ViewUtil;
/** Utilities for configuring ListViews with a card background. */
public class ContactListViewUtils {
// These two constants will help add more padding for the text inside the card.
private static final double TEXT_LEFT_PADDING_TO_CARD_PADDING_RATIO = 1.1;
private static void addPaddingToView(
ListView listView, int parentWidth, int listSpaceWeight, int listViewWeight) {
if (listSpaceWeight > 0 && listViewWeight > 0) {
double paddingPercent =
(double) listSpaceWeight / (double) (listSpaceWeight * 2 + listViewWeight);
listView.setPadding(
(int) (parentWidth * paddingPercent * TEXT_LEFT_PADDING_TO_CARD_PADDING_RATIO),
listView.getPaddingTop(),
(int) (parentWidth * paddingPercent * TEXT_LEFT_PADDING_TO_CARD_PADDING_RATIO),
listView.getPaddingBottom());
// The EdgeEffect and ScrollBar need to span to the edge of the ListView's padding.
listView.setClipToPadding(false);
listView.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
}
}
/**
* Add padding to {@param listView} if this configuration has set both space weight and view
* weight on the layout. Use this util method instead of defining the padding in the layout file
* so that the {@param listView}'s padding can be set proportional to the card padding.
*
* @param listView ListView that we add padding to
* @param rootLayout layout that contains ListView and R.id.list_card
*/
public static void applyCardPaddingToView(
Resources resources, final ListView listView, final View rootLayout) {
// Set a padding on the list view so it appears in the center of the card
// in the layout if required.
final int listSpaceWeight = resources.getInteger(R.integer.contact_list_space_layout_weight);
final int listViewWeight = resources.getInteger(R.integer.contact_list_card_layout_weight);
if (listSpaceWeight > 0 && listViewWeight > 0) {
rootLayout.setBackgroundResource(0);
// Set the card view visible
View mCardView = rootLayout.findViewById(R.id.list_card);
if (mCardView == null) {
throw new RuntimeException(
"Your content must have a list card view who can be turned visible "
+ "whenever it is necessary.");
}
mCardView.setVisibility(View.VISIBLE);
// Add extra padding to the list view to make them appear in the center of the card.
// In order to avoid jumping, we skip drawing the next frame of the ListView.
ViewUtil.doOnPreDraw(
listView,
false,
new Runnable() {
@Override
public void run() {
// Use the rootLayout.getWidth() instead of listView.getWidth() since
// we sometimes hide the listView until we finish loading data. This would
// result in incorrect padding.
ContactListViewUtils.addPaddingToView(
listView, rootLayout.getWidth(), listSpaceWeight, listViewWeight);
}
});
}
}
}
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