Configure the plugin based on the Maven plugin configuration

build.gradle.kts

@@ -85,8 +85,10 @@ dependencies {
         intellijIdeaCommunity("2024.1.7")
 
         bundledPlugin("com.intellij.java")
+        bundledPlugin("org.jetbrains.idea.maven")
 
         testFramework(TestFrameworkType.Platform)
+        testFramework(TestFrameworkType.Plugin.Maven)
     }
 
     implementation("commons-io:commons-io:2.20.0")

src/main/java/org/infernus/idea/checkstyle/config/PluginConfiguration.java

@@ -24,6 +24,7 @@ public class PluginConfiguration {
     private final List<String> thirdPartyClasspath;
     private final SortedSet<String> activeLocationIds;
     private final boolean scanBeforeCheckin;
+    private final boolean importSettingsFromMaven;
 
     PluginConfiguration(@NotNull final String checkstyleVersion,
                         @NotNull final ScanScope scanScope,
@@ -33,7 +34,8 @@ public class PluginConfiguration {
                         @NotNull final SortedSet<ConfigurationLocation> locations,
                         @NotNull final List<String> thirdPartyClasspath,
                         @NotNull final SortedSet<String> activeLocationIds,
-                        final boolean scanBeforeCheckin) {
+                        final boolean scanBeforeCheckin,
+                        final boolean importSettingsFromMaven) {
         this.checkstyleVersion = checkstyleVersion;
         this.scanScope = scanScope;
         this.suppressErrors = suppressErrors;
@@ -45,6 +47,7 @@ public class PluginConfiguration {
                 .filter(Objects::nonNull)
                 .collect(Collectors.toCollection(TreeSet::new));
         this.scanBeforeCheckin = scanBeforeCheckin;
+        this.importSettingsFromMaven = importSettingsFromMaven;
     }
 
     @NotNull
@@ -103,6 +106,10 @@ public boolean isScanBeforeCheckin() {
         return scanBeforeCheckin;
     }
 
+    public boolean isImportSettingsFromMaven() {
+        return importSettingsFromMaven;
+    }
+
     public boolean hasChangedFrom(final Object other) {
         return this.equals(other) && locationsAreEqual((PluginConfiguration) other);
     }
@@ -137,13 +144,14 @@ public boolean equals(final Object other) {
                 && Objects.equals(locations, otherDto.locations)
                 && Objects.equals(thirdPartyClasspath, otherDto.thirdPartyClasspath)
                 && Objects.equals(activeLocationIds, otherDto.activeLocationIds)
-                && Objects.equals(scanBeforeCheckin, otherDto.scanBeforeCheckin);
+                && Objects.equals(scanBeforeCheckin, otherDto.scanBeforeCheckin)
+                && Objects.equals(importSettingsFromMaven, otherDto.importSettingsFromMaven);
     }
 
     @Override
     public int hashCode() {
         return Objects.hash(checkstyleVersion, scanScope, suppressErrors, copyLibs, scrollToSource,
-                locations, thirdPartyClasspath, activeLocationIds, scanBeforeCheckin);
+                locations, thirdPartyClasspath, activeLocationIds, scanBeforeCheckin, importSettingsFromMaven);
     }
 
 }

src/main/java/org/infernus/idea/checkstyle/config/PluginConfigurationBuilder.java

@@ -21,6 +21,7 @@ public final class PluginConfigurationBuilder {
     private List<String> thirdPartyClasspath;
     private SortedSet<String> activeLocationIds;
     private boolean scanBeforeCheckin;
+    private boolean importSettingsFromMaven;
 
     private PluginConfigurationBuilder(@NotNull final String checkstyleVersion,
                                        @NotNull final ScanScope scanScope,
@@ -30,7 +31,8 @@ private PluginConfigurationBuilder(@NotNull final String checkstyleVersion,
                                        @NotNull final SortedSet<ConfigurationLocation> locations,
                                        @NotNull final List<String> thirdPartyClasspath,
                                        @NotNull final SortedSet<String> activeLocationIds,
-                                       final boolean scanBeforeCheckin) {
+                                       final boolean scanBeforeCheckin,
+                                       final boolean importSettingsFromMaven) {
         this.checkstyleVersion = checkstyleVersion;
         this.scanScope = scanScope;
         this.suppressErrors = suppressErrors;
@@ -40,6 +42,7 @@ private PluginConfigurationBuilder(@NotNull final String checkstyleVersion,
         this.thirdPartyClasspath = thirdPartyClasspath;
         this.activeLocationIds = activeLocationIds;
         this.scanBeforeCheckin = scanBeforeCheckin;
+        this.importSettingsFromMaven = importSettingsFromMaven;
     }
 
     public static PluginConfigurationBuilder defaultConfiguration(@NotNull final Project project) {
@@ -60,6 +63,7 @@ public static PluginConfigurationBuilder defaultConfiguration(@NotNull final Pro
                 defaultLocations,
                 Collections.emptyList(),
                 Collections.emptySortedSet(),
+                false,
                 false);
     }
 
@@ -73,6 +77,7 @@ public static PluginConfigurationBuilder testInstance(@NotNull final String chec
                 Collections.emptySortedSet(),
                 Collections.emptyList(),
                 Collections.emptySortedSet(),
+                false,
                 false);
     }
 
@@ -85,7 +90,8 @@ public static PluginConfigurationBuilder from(@NotNull final PluginConfiguration
                 source.getLocations(),
                 source.getThirdPartyClasspath(),
                 source.getActiveLocationIds(),
-                source.isScanBeforeCheckin());
+                source.isScanBeforeCheckin(),
+                source.isImportSettingsFromMaven());
     }
 
     public PluginConfigurationBuilder withCheckstyleVersion(@NotNull final String newCheckstyleVersion) {
@@ -133,6 +139,11 @@ public PluginConfigurationBuilder withScanScope(@NotNull final ScanScope newScan
         return this;
     }
 
+    public PluginConfigurationBuilder withImportSettingsFromMaven(final boolean importSettingsFromMaven) {
+        this.importSettingsFromMaven = importSettingsFromMaven;
+        return this;
+    }
+
     public PluginConfiguration build() {
         return new PluginConfiguration(
                 checkstyleVersion,
@@ -143,7 +154,8 @@ public PluginConfiguration build() {
                 Objects.requireNonNullElseGet(locations, TreeSet::new),
                 Objects.requireNonNullElseGet(thirdPartyClasspath, ArrayList::new),
                 Objects.requireNonNullElseGet(activeLocationIds, TreeSet::new),
-                scanBeforeCheckin);
+                scanBeforeCheckin,
+                importSettingsFromMaven);
     }
 
     private static ConfigurationLocationFactory configurationLocationFactory(final Project project) {

src/main/java/org/infernus/idea/checkstyle/config/ProjectConfigurationState.java

@@ -84,6 +84,8 @@ static class ProjectSettings {
         private boolean scrollToSource;
         @Tag
         private boolean scanBeforeCheckin;
+        @Tag
+        private boolean importSettingsFromMaven;
         @XCollection
         private List<String> thirdPartyClasspath;
         @XCollection
@@ -105,6 +107,7 @@ static ProjectSettings create(@NotNull final PluginConfiguration currentPluginCo
             projectSettings.copyLibs = currentPluginConfig.isCopyLibs();
             projectSettings.scrollToSource = currentPluginConfig.isScrollToSource();
             projectSettings.scanBeforeCheckin = currentPluginConfig.isScanBeforeCheckin();
+            projectSettings.importSettingsFromMaven = currentPluginConfig.isImportSettingsFromMaven();
 
             projectSettings.thirdPartyClasspath = new ArrayList<>(currentPluginConfig.getThirdPartyClasspath());
             projectSettings.activeLocationIds = new ArrayList<>(currentPluginConfig.getActiveLocationIds());
@@ -151,7 +154,8 @@ PluginConfigurationBuilder populate(@NotNull final PluginConfigurationBuilder bu
                         .withScanBeforeCheckin(scanBeforeCheckin)
                         .withThirdPartyClassPath(requireNonNullElseGet(thirdPartyClasspath, ArrayList::new))
                         .withLocations(deserialiseLocations(project))
-                        .withActiveLocationIds(new TreeSet<>(requireNonNullElseGet(activeLocationIds, ArrayList::new)));
+                        .withActiveLocationIds(new TreeSet<>(requireNonNullElseGet(activeLocationIds, ArrayList::new)))
+                        .withImportSettingsFromMaven(importSettingsFromMaven);
             }
 
             return new LegacyProjectConfigurationStateDeserialiser(project)