com.izforge.izpack.panels.userinput.field.FieldHelper Maven / Gradle / Ivy
/*
* IzPack - Copyright 2001-2012 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* Copyright 2012 Tim Anderson
*
* 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.izforge.izpack.panels.userinput.field;
import java.util.List;
import com.izforge.izpack.api.data.InstallData;
import com.izforge.izpack.api.data.Pack;
import com.izforge.izpack.util.PlatformModelMatcher;
/**
* Determines if a field is selected for display.
*
* @author Tim Anderson
*/
public class FieldHelper
{
/**
* Determines if a field is required if the field is required for the current platform and selected packs.
*
* @param field the field
* @param installData the installation data
* @param matcher the platform-model matcher
* @return {@code true} if the field is required for the current platform and selected packs
*/
public static boolean isRequired(Field field, InstallData installData, PlatformModelMatcher matcher)
{
return isRequiredForPacks(field.getPacks(), installData.getSelectedPacks())
&& matcher.matchesCurrentPlatform(field.getOsModels());
}
/**
* Determine if an item is required by any of the selected packs.
*
* An item is required if it has no pack constraints, or names one or more selected packs.
*
* @param packNames the item's pack constraints. Each name corresponds to a pack for which the item should be
* created if the pack is selected for installation
* @param selectedPacks the selected packs
* @return {@code true} if {@code packs} is empty, or one of the packs appears in {@code selectedPacks}
*/
public static boolean isRequiredForPacks(List packNames, List selectedPacks)
{
boolean result = packNames.isEmpty();
if (!result)
{
for (Pack selectedPack : selectedPacks)
{
String selected = selectedPack.getName();
for (String pack : packNames)
{
if (selected.equals(pack))
{
result = true;
}
}
}
}
return result;
}
/**
* Determine if an item is required by any of the unselected packs.
*
* An item is required if it has no pack constraints, or doesn't name any selected packs.
*
* @param packNames the item's pack constraints. Each name corresponds to a pack for which the item should be
* created if the pack is not selected for installation
* @param selectedPacks the selected packs
* @return {@code true} if {@code packs} is empty, or none of the packs appears in {@code selectedPacks}
*/
public static boolean isRequiredForUnselectedPacks(List packNames, List selectedPacks)
{
boolean result = packNames.isEmpty();
if (!result)
{
for (Pack selectedPack : selectedPacks)
{
String selected = selectedPack.getName();
for (String pack : packNames)
{
if (selected.equals(pack))
{
return false;
}
}
}
}
return true;
}
}