Adding 'line comments at first column' option

See: https://youtrack.jetbrains.com/issue/SCL-7898

src/org/jetbrains/plugins/scala/lang/formatting/settings/OtherCodeStylePanel.form

@@ -8,7 +8,7 @@
     <properties/>
     <border type="none"/>
     <children>
-      <grid id="d040d" binding="contentPanel" layout-manager="GridLayoutManager" row-count="6" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+      <grid id="d040d" binding="contentPanel" layout-manager="GridLayoutManager" row-count="7" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
         <margin top="0" left="0" bottom="0" right="0"/>
         <constraints>
           <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
@@ -26,7 +26,7 @@
           </component>
           <vspacer id="78b68">
             <constraints>
-              <grid row="5" column="0" row-span="1" col-span="1" vsize-policy="6" hsize-policy="1" anchor="0" fill="2" indent="0" use-parent-layout="false"/>
+              <grid row="6" column="0" row-span="1" col-span="1" vsize-policy="6" hsize-policy="1" anchor="0" fill="2" indent="0" use-parent-layout="false"/>
             </constraints>
           </vspacer>
           <component id="c8e23" class="javax.swing.JCheckBox" binding="replaceWithUnicodeSymbolCheckBox" default-binding="true">
@@ -62,6 +62,15 @@
               <text value="Kind Projector: Replace 'Lambda' with unicode symbol"/>
             </properties>
           </component>
+          <component id="c514a" class="javax.swing.JCheckBox" binding="lineCommentAtFirstColumnCheckBox">
+            <constraints>
+              <grid row="5" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="8" fill="0" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <selected value="false"/>
+              <text value="Line comment on first column"/>
+            </properties>
+          </component>
         </children>
       </grid>
     </children>

src/org/jetbrains/plugins/scala/lang/formatting/settings/OtherCodeStylePanel.java

@@ -6,12 +6,14 @@
 import com.intellij.openapi.fileTypes.FileType;
 import com.intellij.openapi.options.ConfigurationException;
 import com.intellij.psi.codeStyle.CodeStyleSettings;
+import com.intellij.psi.codeStyle.CommonCodeStyleSettings;
 import com.intellij.uiDesigner.core.GridConstraints;
 import com.intellij.uiDesigner.core.GridLayoutManager;
 import com.intellij.uiDesigner.core.Spacer;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.plugins.scala.ScalaFileType;
+import org.jetbrains.plugins.scala.ScalaLanguage;
 import org.jetbrains.plugins.scala.highlighter.ScalaEditorHighlighter;
 
 import javax.swing.*;
@@ -28,6 +30,7 @@ public class OtherCodeStylePanel extends CodeStyleAbstractPanel {
   private JCheckBox replaceWithUnicodeSymbolCheckBox1;
   private JCheckBox replaceInForGeneratorCheckBox;
   private JCheckBox replaceLambdaWithGreekLetter;
+  private JCheckBox lineCommentAtFirstColumnCheckBox;
 
   protected OtherCodeStylePanel(@NotNull CodeStyleSettings settings) {
     super(settings);
@@ -67,16 +70,19 @@ public void apply(CodeStyleSettings settings) throws ConfigurationException {
     if (!isModified(settings)) return;
 
     ScalaCodeStyleSettings scalaCodeStyleSettings = settings.getCustomSettings(ScalaCodeStyleSettings.class);
+    CommonCodeStyleSettings commonCodeStyleSettings = settings.getCommonSettings(ScalaLanguage.Instance);
     scalaCodeStyleSettings.ENFORCE_FUNCTIONAL_SYNTAX_FOR_UNIT = enforceFunctionalSyntaxForCheckBox.isSelected();
     scalaCodeStyleSettings.REPLACE_CASE_ARROW_WITH_UNICODE_CHAR = replaceWithUnicodeSymbolCheckBox.isSelected();
     scalaCodeStyleSettings.REPLACE_MAP_ARROW_WITH_UNICODE_CHAR = replaceWithUnicodeSymbolCheckBox1.isSelected();
     scalaCodeStyleSettings.REPLACE_FOR_GENERATOR_ARROW_WITH_UNICODE_CHAR = replaceInForGeneratorCheckBox.isSelected();
     scalaCodeStyleSettings.REPLACE_LAMBDA_WITH_GREEK_LETTER = replaceLambdaWithGreekLetter.isSelected();
+    commonCodeStyleSettings.LINE_COMMENT_AT_FIRST_COLUMN = lineCommentAtFirstColumnCheckBox.isSelected();
   }
 
   @Override
   public boolean isModified(CodeStyleSettings settings) {
     ScalaCodeStyleSettings scalaCodeStyleSettings = settings.getCustomSettings(ScalaCodeStyleSettings.class);
+    CommonCodeStyleSettings commonCodeStyleSettings = settings.getCommonSettings(ScalaLanguage.Instance);
 
     if (scalaCodeStyleSettings.ENFORCE_FUNCTIONAL_SYNTAX_FOR_UNIT != enforceFunctionalSyntaxForCheckBox.isSelected())
       return true;
@@ -88,6 +94,8 @@ public boolean isModified(CodeStyleSettings settings) {
       return true;
     if (scalaCodeStyleSettings.REPLACE_LAMBDA_WITH_GREEK_LETTER != replaceLambdaWithGreekLetter.isSelected())
       return true;
+    if (commonCodeStyleSettings.LINE_COMMENT_AT_FIRST_COLUMN != lineCommentAtFirstColumnCheckBox.isSelected())
+      return true;
 
 
     return false;
@@ -102,11 +110,13 @@ public JComponent getPanel() {
   @Override
   protected void resetImpl(CodeStyleSettings settings) {
     ScalaCodeStyleSettings scalaCodeStyleSettings = settings.getCustomSettings(ScalaCodeStyleSettings.class);
+    CommonCodeStyleSettings commonCodeStyleSettings = settings.getCommonSettings(ScalaLanguage.Instance);
     enforceFunctionalSyntaxForCheckBox.setSelected(scalaCodeStyleSettings.ENFORCE_FUNCTIONAL_SYNTAX_FOR_UNIT);
     replaceWithUnicodeSymbolCheckBox.setSelected(scalaCodeStyleSettings.REPLACE_CASE_ARROW_WITH_UNICODE_CHAR);
     replaceWithUnicodeSymbolCheckBox1.setSelected(scalaCodeStyleSettings.REPLACE_MAP_ARROW_WITH_UNICODE_CHAR);
     replaceInForGeneratorCheckBox.setSelected(scalaCodeStyleSettings.REPLACE_FOR_GENERATOR_ARROW_WITH_UNICODE_CHAR);
     replaceLambdaWithGreekLetter.setSelected(scalaCodeStyleSettings.REPLACE_LAMBDA_WITH_GREEK_LETTER);
+    lineCommentAtFirstColumnCheckBox.setSelected(commonCodeStyleSettings.LINE_COMMENT_AT_FIRST_COLUMN);
   }
 
   {
@@ -127,13 +137,13 @@ protected void resetImpl(CodeStyleSettings settings) {
     final JPanel panel1 = new JPanel();
     panel1.setLayout(new GridLayoutManager(1, 1, new Insets(0, 0, 0, 0), -1, -1));
     contentPanel = new JPanel();
-    contentPanel.setLayout(new GridLayoutManager(6, 1, new Insets(0, 0, 0, 0), -1, -1));
+    contentPanel.setLayout(new GridLayoutManager(7, 1, new Insets(0, 0, 0, 0), -1, -1));
     panel1.add(contentPanel, new GridConstraints(0, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_BOTH, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, null, null, null, 0, false));
     enforceFunctionalSyntaxForCheckBox = new JCheckBox();
     enforceFunctionalSyntaxForCheckBox.setText("Enforce procedure syntax for methods with Unit return type");
     contentPanel.add(enforceFunctionalSyntaxForCheckBox, new GridConstraints(0, 0, 1, 1, GridConstraints.ANCHOR_WEST, GridConstraints.FILL_NONE, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
     final Spacer spacer1 = new Spacer();
-    contentPanel.add(spacer1, new GridConstraints(5, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_VERTICAL, 1, GridConstraints.SIZEPOLICY_WANT_GROW, null, null, null, 0, false));
+    contentPanel.add(spacer1, new GridConstraints(6, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_VERTICAL, 1, GridConstraints.SIZEPOLICY_WANT_GROW, null, null, null, 0, false));
     replaceWithUnicodeSymbolCheckBox = new JCheckBox();
     replaceWithUnicodeSymbolCheckBox.setText("Replace '=>' with unicode symbol");
     contentPanel.add(replaceWithUnicodeSymbolCheckBox, new GridConstraints(1, 0, 1, 1, GridConstraints.ANCHOR_WEST, GridConstraints.FILL_NONE, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
@@ -147,5 +157,9 @@ protected void resetImpl(CodeStyleSettings settings) {
     replaceLambdaWithGreekLetter.setSelected(false);
     replaceLambdaWithGreekLetter.setText("Kind Projector: Replace 'Lambda' with unicode symbol");
     contentPanel.add(replaceLambdaWithGreekLetter, new GridConstraints(4, 0, 1, 1, GridConstraints.ANCHOR_WEST, GridConstraints.FILL_NONE, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
+    lineCommentAtFirstColumnCheckBox = new JCheckBox();
+    lineCommentAtFirstColumnCheckBox.setSelected(false);
+    lineCommentAtFirstColumnCheckBox.setText("Line comment on first column");
+    contentPanel.add(lineCommentAtFirstColumnCheckBox, new GridConstraints(5, 0, 1, 1, GridConstraints.ANCHOR_WEST, GridConstraints.FILL_NONE, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
   }
 }

src/org/jetbrains/plugins/scala/lang/formatting/settings/ScalaLanguageCodeStyleSettingsProvider.scala

@@ -182,6 +182,7 @@ class ScalaLanguageCodeStyleSettingsProvider extends LanguageCodeStyleSettingsPr
     indentOptions.INDENT_SIZE = 2
     indentOptions.TAB_SIZE = 2
     indentOptions.CONTINUATION_INDENT_SIZE = 2
+    commonCodeStyleSettings.LINE_COMMENT_AT_FIRST_COLUMN = true
     commonCodeStyleSettings
   }