/
ColorHeaderItem.java
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/
ColorHeaderItem.java
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/*
* Copyright 2021 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 io.material.catalog.color;
import android.content.Context;
import androidx.annotation.ColorRes;
import androidx.annotation.NonNull;
import java.util.Arrays;
import java.util.List;
/** A class for the headers in the color palette. */
public class ColorHeaderItem implements ColorAdapterItem {
public static final String SYSTEM_PREFIX = "system_";
private static final String COLOR_600 = "600";
@ColorRes private final int backgroundColorRes;
private final String description;
ColorHeaderItem(Context context, List<ColorItem> colors) {
ColorItem sample = colors.get(0);
for (ColorItem color : colors) {
if (color.getColorResName().contains(COLOR_600)) {
sample = color;
break;
}
}
backgroundColorRes = sample.getColorRes();
description = sample.getColorResName();
}
@ColorRes
int getBackgroundColorRes() {
return backgroundColorRes;
}
/** Returns the display name for the header, e.g. Blue. */
@NonNull
public String getDisplayName() {
String name;
int splitIndex = description.lastIndexOf("_");
if (description.startsWith(SYSTEM_PREFIX)) {
// Split the resource name into the color name and value, ie. system_accent1_500 to
// system_accent1 and 500.
name = description.substring(0, splitIndex);
} else {
// Get the name of the color an value without prefixes
String trimmedResName = description.substring(splitIndex + 1);
// Split the resource name into the color name and value, ie. blue500 to blue and 500.
List<String> parts = Arrays.asList(trimmedResName.split("(?<=\\D)(?=\\d)", -1));
name = parts.get(0);
}
String headerColor = name.replace('_', ' ');
return Character.toUpperCase(headerColor.charAt(0)) + headerColor.substring(1);
}
}