Added Code Style settings page to control indentation (#258, #92)

Author: jimkyndemeyer

resources/META-INF/plugin.xml

@@ -124,6 +124,8 @@
 
     <!-- Formatting and folding -->
     <lang.formatter language="GraphQL" implementationClass="com.intellij.lang.jsgraphql.ide.formatter.GraphQLFormattingModelBuilder"/>
+    <langCodeStyleSettingsProvider implementation="com.intellij.lang.jsgraphql.ide.formatter.GraphQLLanguageCodeStyleSettingsProvider"/>
+    <codeStyleSettingsProvider implementation="com.intellij.lang.jsgraphql.ide.formatter.GraphQLCodeStyleSettingsProvider"/>
     <lang.foldingBuilder language="GraphQL" implementationClass="com.intellij.lang.jsgraphql.ide.editor.GraphQLFoldingBuilder"/>
 
     <!-- Editing -->

src/main/com/intellij/lang/jsgraphql/ide/formatter/GraphQLCodeStyleSettingsProvider.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2019-present, Jim Kynde Meyer
+ * All rights reserved.
+ * <p>
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+package com.intellij.lang.jsgraphql.ide.formatter;
+
+import com.intellij.application.options.CodeStyleAbstractConfigurable;
+import com.intellij.application.options.CodeStyleAbstractPanel;
+import com.intellij.application.options.TabbedLanguageCodeStylePanel;
+import com.intellij.lang.Language;
+import com.intellij.lang.jsgraphql.GraphQLLanguage;
+import com.intellij.openapi.options.Configurable;
+import com.intellij.psi.codeStyle.CodeStyleSettings;
+import com.intellij.psi.codeStyle.CodeStyleSettingsProvider;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class GraphQLCodeStyleSettingsProvider extends CodeStyleSettingsProvider {
+    @NotNull
+    @Override
+    public Configurable createSettingsPage(CodeStyleSettings settings, CodeStyleSettings originalSettings) {
+        return new CodeStyleAbstractConfigurable(settings, originalSettings, "GraphQL") {
+            @Override
+            protected CodeStyleAbstractPanel createPanel(CodeStyleSettings settings) {
+                final Language language = GraphQLLanguage.INSTANCE;
+                final CodeStyleSettings currentSettings = getCurrentSettings();
+                return new TabbedLanguageCodeStylePanel(language, currentSettings, settings) {
+                    @Override
+                    protected void initTabs(CodeStyleSettings settings) {
+                        addIndentOptionsTab(settings);
+                    }
+                };
+            }
+        };
+    }
+
+    @Nullable
+    @Override
+    public String getConfigurableDisplayName() {
+        return GraphQLLanguage.INSTANCE.getDisplayName();
+    }
+
+}

src/main/com/intellij/lang/jsgraphql/ide/formatter/GraphQLFormattingModelBuilder.java

@@ -20,9 +20,6 @@ public class GraphQLFormattingModelBuilder implements FormattingModelBuilder {
   @NotNull
   @Override
   public FormattingModel createModel(PsiElement element, CodeStyleSettings settings) {
-    // TODO: Use code style settings
-    // settings.getIndentOptions().INDENT_SIZE = 2;
-
     return FormattingModelProvider.createFormattingModelForPsiFile(
         element.getContainingFile(),
         new GraphQLBlock(element.getNode(), Wrap.createWrap(WrapType.NONE, false), null),

src/main/com/intellij/lang/jsgraphql/ide/formatter/GraphQLLanguageCodeStyleSettingsProvider.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2019-present, Jim Kynde Meyer
+ * All rights reserved.
+ * <p>
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+package com.intellij.lang.jsgraphql.ide.formatter;
+
+import com.intellij.application.options.IndentOptionsEditor;
+import com.intellij.lang.Language;
+import com.intellij.lang.jsgraphql.GraphQLLanguage;
+import com.intellij.psi.codeStyle.LanguageCodeStyleSettingsProvider;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class GraphQLLanguageCodeStyleSettingsProvider extends LanguageCodeStyleSettingsProvider {
+
+    private static final String SAMPLE = "query Hero($episode: Episode!, $withFriends: Boolean!) {\n" +
+            "    hero(episode: $episode) {\n" +
+            "        name\n" +
+            "        ...HeroDetails\n" +
+            "        acquaintances: friends @include(if: $withFriends) {\n" +
+            "            name\n" +
+            "        }\n" +
+            "    }\n" +
+            "}";
+
+    @NotNull
+    @Override
+    public Language getLanguage() {
+        return GraphQLLanguage.INSTANCE;
+    }
+
+    @Nullable
+    @Override
+    public IndentOptionsEditor getIndentOptionsEditor() {
+        return new IndentOptionsEditor();
+    }
+
+    @Override
+    public String getCodeSample(@NotNull SettingsType settingsType) {
+        return SAMPLE;
+    }
+
+}