Status bar information, notification and actions (initial)

plugins/editorconfig/src/org/editorconfig/configmanagement/EditorConfigIndentOptionsProvider.java

 package org.editorconfig.configmanagement;
 
+import com.intellij.ide.actions.ShowSettingsUtilImpl;
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.project.DumbAwareAction;
 import com.intellij.openapi.project.Project;
+import com.intellij.openapi.util.Key;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.PsiFile;
 import com.intellij.psi.codeStyle.CodeStyleSettings;
-import com.intellij.psi.codeStyle.CommonCodeStyleSettings;
+import com.intellij.psi.codeStyle.CommonCodeStyleSettings.IndentOptions;
 import com.intellij.psi.codeStyle.FileIndentOptionsProvider;
+import com.intellij.util.containers.ContainerUtil;
 import org.editorconfig.Utils;
 import org.editorconfig.core.EditorConfig;
 import org.editorconfig.plugincomponents.SettingsProviderComponent;
@@ -24,9 +29,11 @@ public class EditorConfigIndentOptionsProvider extends FileIndentOptionsProvider
   public static final String tabWidthKey = "tab_width";
   public static final String indentStyleKey = "indent_style";
 
+  private static final Key<Boolean> PROJECT_ADVERTISEMENT_FLAG = Key.create("editor.config.ad.shown");
+
   @Nullable
   @Override
-  public CommonCodeStyleSettings.IndentOptions getIndentOptions(@NotNull CodeStyleSettings settings, @NotNull PsiFile psiFile) {
+  public IndentOptions getIndentOptions(@NotNull CodeStyleSettings settings, @NotNull PsiFile psiFile) {
     final VirtualFile file = psiFile.getVirtualFile();
     if (file == null) return null;
 
@@ -39,16 +46,16 @@ public class EditorConfigIndentOptionsProvider extends FileIndentOptionsProvider
     return applyCodeStyleSettings(project, outPairs, file, settings);
   }
 
-  private static CommonCodeStyleSettings.IndentOptions applyCodeStyleSettings(Project project,
-                                                                              final List<EditorConfig.OutPair> outPairs,
-                                                                              final VirtualFile file,
-                                                                              final CodeStyleSettings settings) {
+  private static IndentOptions applyCodeStyleSettings(Project project,
+                                                      final List<EditorConfig.OutPair> outPairs,
+                                                      final VirtualFile file,
+                                                      final CodeStyleSettings settings) {
     // Apply indent options
     final String indentSize = Utils.configValueForKey(outPairs, indentSizeKey);
     final String continuationIndentSize = Utils.configValueForKey(outPairs, continuationSizeKey);
     final String tabWidth = Utils.configValueForKey(outPairs, tabWidthKey);
     final String indentStyle = Utils.configValueForKey(outPairs, indentStyleKey);
-    final CommonCodeStyleSettings.IndentOptions indentOptions = (CommonCodeStyleSettings.IndentOptions)settings.getIndentOptions(file.getFileType()).clone();
+    final IndentOptions indentOptions = (IndentOptions)settings.getIndentOptions(file.getFileType()).clone();
     if (applyIndentOptions(project, indentOptions, indentSize, continuationIndentSize, tabWidth, indentStyle, file.getCanonicalPath())) {
       indentOptions.setOverrideLanguageOptions(true);
       return indentOptions;
@@ -56,7 +63,7 @@ public class EditorConfigIndentOptionsProvider extends FileIndentOptionsProvider
     return null;
   }
 
-  private static boolean applyIndentOptions(Project project, CommonCodeStyleSettings.IndentOptions indentOptions,
+  private static boolean applyIndentOptions(Project project, IndentOptions indentOptions,
                                             String indentSize, String continuationIndentSize, String tabWidth,
                                             String indentStyle, String filePath) {
     boolean changed = false;
@@ -117,7 +124,7 @@ public class EditorConfigIndentOptionsProvider extends FileIndentOptionsProvider
     }
   }
 
-  private static boolean applyIndentSize(final CommonCodeStyleSettings.IndentOptions indentOptions, final String indentSize) {
+  private static boolean applyIndentSize(final IndentOptions indentOptions, final String indentSize) {
     try {
       indentOptions.INDENT_SIZE = Integer.parseInt(indentSize);
       return true;
@@ -127,7 +134,7 @@ public class EditorConfigIndentOptionsProvider extends FileIndentOptionsProvider
     }
   }
 
-  private static boolean applyContinuationIndentSize(final CommonCodeStyleSettings.IndentOptions indentOptions, final String continuationIndentSize) {
+  private static boolean applyContinuationIndentSize(final IndentOptions indentOptions, final String continuationIndentSize) {
     try {
       indentOptions.CONTINUATION_INDENT_SIZE = Integer.parseInt(continuationIndentSize);
       return true;
@@ -136,7 +143,7 @@ public class EditorConfigIndentOptionsProvider extends FileIndentOptionsProvider
       return false;
     }
   }
-  private static boolean applyTabWidth(final CommonCodeStyleSettings.IndentOptions indentOptions, final String tabWidth) {
+  private static boolean applyTabWidth(final IndentOptions indentOptions, final String tabWidth) {
     try {
       indentOptions.TAB_SIZE = Integer.parseInt(tabWidth);
       return true;
@@ -146,11 +153,54 @@ public class EditorConfigIndentOptionsProvider extends FileIndentOptionsProvider
     }
   }
 
-  private static boolean applyIndentStyle(CommonCodeStyleSettings.IndentOptions indentOptions, String indentStyle) {
+  private static boolean applyIndentStyle(IndentOptions indentOptions, String indentStyle) {
     if (indentStyle.equals("tab") || indentStyle.equals("space")) {
       indentOptions.USE_TAB_CHARACTER = indentStyle.equals("tab");
       return true;
     }
     return false;
   }
+
+  @Override
+  public boolean areActionsAvailable(@NotNull VirtualFile file, @NotNull IndentOptions indentOptions) {
+    return isEditorConfigOptions(indentOptions);
+  }
+
+  @Nullable
+  @Override
+  public AnAction[] getActions(@NotNull PsiFile file, @NotNull IndentOptions indentOptions) {
+    if (isEditorConfigOptions(indentOptions)) {
+      List<AnAction> actions = ContainerUtil.newArrayList();
+      actions.add(
+        DumbAwareAction.create(
+          "Show settings",
+
+          e -> ShowSettingsUtilImpl.showSettingsDialog(file.getProject(), "preferences.sourceCode", "EditorConfig")
+        )
+      );
+      return actions.toArray(AnAction.EMPTY_ARRAY);
+    }
+    return null;
+  }
+
+  @Nullable
+  @Override
+  protected String getHint(@NotNull IndentOptions indentOptions) {
+    return isEditorConfigOptions(indentOptions) ? ".editorconfig" : null;
+  }
+
+  private static boolean isEditorConfigOptions(@NotNull IndentOptions indentOptions) {
+    return indentOptions.getFileIndentOptionsProvider() instanceof EditorConfigIndentOptionsProvider;
+  }
+
+
+  @Nullable
+  @Override
+  public String getAdvertisementText(@NotNull PsiFile psiFile, @NotNull IndentOptions indentOptions) {
+    Project project = psiFile.getProject();
+    Boolean adFlag = project.getUserData(PROJECT_ADVERTISEMENT_FLAG);
+    if (adFlag != null && adFlag) return null;
+    project.putUserData(PROJECT_ADVERTISEMENT_FLAG, true);
+    return "Current indent options are overridden by .editorconfig";
+  }
 }