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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 com.android.email;
import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Paint;
/**
* Helper class to load resources.
*/
public class ResourceHelper {
public final static int UNDEFINED_RESOURCE_ID = -1;
private static ResourceHelper sInstance;
private final Context mContext;
private final Resources mResources;
private final int[] mAccountColors;
private final Paint[] mAccountColorPaints;
private final TypedArray mAccountColorArray;
private ResourceHelper(Context context) {
mContext = context.getApplicationContext();
mResources = mContext.getResources();
mAccountColorArray = mResources.obtainTypedArray(R.array.combined_view_account_colors);
mAccountColors = mResources.getIntArray(R.array.combined_view_account_colors);
mAccountColorPaints = new Paint[mAccountColors.length];
for (int i = 0; i < mAccountColors.length; i++) {
Paint p = new Paint();
p.setColor(mAccountColors[i]);
mAccountColorPaints[i] = p;
}
}
public static synchronized ResourceHelper getInstance(Context context) {
if (sInstance == null) {
sInstance = new ResourceHelper(context);
}
return sInstance;
}
/* package */ int getAccountColorIndex(long accountId) {
// The account ID is 1-based, so -1.
// Use abs so that it'd work for -1 as well.
return Math.abs((int) ((accountId - 1) % mAccountColors.length));
}
/**
* @return color for an account.
*/
public int getAccountColor(long accountId) {
return mAccountColors[getAccountColorIndex(accountId)];
}
/**
* @return The resource ID for an account color.
* Otherwise, {@value #UNDEFINED_RESOURCE_ID} if color was not specified via ID.
*/
public int getAccountColorId(long accountId) {
return mAccountColorArray.getResourceId(getAccountColorIndex(accountId),
UNDEFINED_RESOURCE_ID);
}
/**
* @return {@link Paint} equivalent to {@link #getAccountColor}.
*/
public Paint getAccountColorPaint(long accountId) {
return mAccountColorPaints[getAccountColorIndex(accountId)];
}
}
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