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Implemented a process to conditionally import previous SceneBuilder v…
…ersion Preferences.
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app/src/main/java/com/oracle/javafx/scenebuilder/app/preferences/AppVersion.java
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| /* | ||
| * Copyright (c) 2022, Gluon and/or its affiliates. | ||
| * All rights reserved. Use is subject to license terms. | ||
| * | ||
| * This file is available and licensed under the following license: | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * | ||
| * - Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * - Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in | ||
| * the documentation and/or other materials provided with the distribution. | ||
| * - Neither the name of Oracle Corporation and Gluon nor the names of its | ||
| * contributors may be used to endorse or promote products derived | ||
| * from this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
| package com.oracle.javafx.scenebuilder.app.preferences; | ||
|
|
||
| import java.util.Comparator; | ||
| import java.util.Optional; | ||
|
|
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| /** | ||
| * A record type to work with Scene Builder versions following the semantic | ||
| * versioning schema. Patch versions can be null and will be ignored then. | ||
| * | ||
| * Version numbers can be sorted, where major beats minor beats patch versions. | ||
| * Version numbers with patch versions will be considered as higher (or newer) than version numbers without patch numbers. | ||
| * This is regardless if there is no patch number or patch version is 0. Patch version 0 is higher than no patch version at all. | ||
| */ | ||
| public record AppVersion(int major, int minor, Integer patch) implements Comparable<AppVersion> { | ||
|
|
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| /** | ||
| * @return {@link Comparator} sorting {@link AppVersion} instances in descending order. | ||
| */ | ||
| public static Comparator<AppVersion> descending() { | ||
| return (a,b)->b.compareTo(a); | ||
| } | ||
|
|
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| public AppVersion(int major, int minor) { | ||
| this(major, minor, null); | ||
| } | ||
|
|
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| @Override | ||
| public int compareTo(AppVersion o) { | ||
| int majorDiff = major - o.major; | ||
| int minorDiff = minor - o.minor; | ||
| int patchDiff = calcPatchDiff(o); | ||
| if (majorDiff == 0) { | ||
| if (minorDiff == 0) { | ||
| return patchDiff; | ||
| } | ||
| return minorDiff; | ||
| } | ||
| return majorDiff; | ||
| } | ||
|
|
||
| @Override | ||
| public String toString() { | ||
| StringBuilder builder = new StringBuilder(); | ||
| builder.append(major); | ||
| builder.append("."); | ||
| builder.append(minor); | ||
| if (patch != null) { | ||
| builder.append("."); | ||
| builder.append(patch); | ||
| } | ||
| return builder.toString(); | ||
| } | ||
|
|
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| /** | ||
| * Creates a version specific Scene Builder Preferences node name using the given prefix. | ||
| * @param prefix {@link String} used as prefix in Preferences node naming. | ||
| * @return | ||
| */ | ||
| public String nodeNameWithPrefix(String prefix) { | ||
| StringBuilder builder = new StringBuilder(); | ||
| if (prefix != null && !prefix.isBlank()) { | ||
| builder.append(prefix); | ||
| } | ||
| builder.append(major); | ||
| builder.append("."); | ||
| builder.append(minor); | ||
| if (patch != null) { | ||
| builder.append("."); | ||
| builder.append(patch); | ||
| } | ||
| return builder.toString(); | ||
| } | ||
|
|
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| protected int calcPatchDiff(AppVersion o) { | ||
| if (patch == null && o.patch == null) { | ||
| return 0; | ||
| } else if (patch == null && o.patch != null) { | ||
| return -1; | ||
| } else if (patch != null && o.patch == null) { | ||
| return 1; | ||
| } | ||
| return patch - o.patch; | ||
| } | ||
|
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||
|
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| /** | ||
| * Parses an optional AppVersion from any given String. | ||
| * Snapshot versions are not considered as valid. | ||
| * | ||
| * @param validVersion String representing a Scene Builder version. | ||
| * @return Empty optional when the String does not represent a valid version. If valid, then an optional AppVersion is returned. | ||
| */ | ||
| public static Optional<AppVersion> fromString(String validVersion) { | ||
| String[] elements = validVersion.strip().split("[.]"); | ||
| return switch (elements.length) { | ||
| case 2 -> parseMajorMinor(elements); | ||
| case 3 -> parseMajorMinorPatch(elements); | ||
| default -> Optional.empty(); | ||
| }; | ||
| } | ||
|
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| private static Optional<AppVersion> parseMajorMinor(String[] elements) { | ||
| try { | ||
| int major = Integer.parseInt(elements[0]); | ||
| int minor = Integer.parseInt(elements[1]); | ||
| if (major < 0 || minor < 0) { | ||
| return Optional.empty(); | ||
| } | ||
| return Optional.of(new AppVersion(major, minor)); | ||
| } catch (NumberFormatException nfe) { | ||
| return Optional.empty(); | ||
| } | ||
| } | ||
|
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| private static Optional<AppVersion> parseMajorMinorPatch(String[] elements) { | ||
| try { | ||
| int major = Integer.parseInt(elements[0]); | ||
| int minor = Integer.parseInt(elements[1]); | ||
| int patch = Integer.parseInt(elements[2]); | ||
| if (major < 0 || minor < 0 || patch < 0) { | ||
| return Optional.empty(); | ||
| } | ||
| return Optional.of(new AppVersion(major, minor, patch)); | ||
| } catch (NumberFormatException nfe) { | ||
| return Optional.empty(); | ||
| } | ||
| } | ||
| } |
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