Add "format on save" for rider users

CHANGELOG.md

@@ -13,7 +13,7 @@
 - Detect indentation style and column limit from `.clang-format` file
 - Format code using `clang-format` binary
 - Settings page to configure `clang-format` binary path
-- Format on save option
+- On Rider, format code on save (other IDEs already have this feature)
 
 [Unreleased]: https://github.com/aarcangeli/idea-clang-format/compare/v1.0.0...HEAD
 [1.0.0]: https://github.com/aarcangeli/idea-clang-format/commits/v1.0.0

README.md

@@ -63,10 +63,19 @@ Note: At the moment, it is not possible to format only a selection of the code.
 
 To enable the format on save feature, follow these steps:
 
+**For Most JetBrains IDEs**
+
 1. Go to `File | Settings | Tools | Actions on Save`
 2. Enable the `Reformat code` action
 3. Optionally, choose the file types you want to format on save
 
+**For Rider**
+
+Unfortunately, Rider is not supported by the `Actions on Save` feature, but you can use the `Clang-Format` action instead.
+
+1. Go to `File | Settings | Tools | Actions on Save`
+2. Enable the `Clang-Format` action
+
 ### Configuration
 
 This plugin should work out of the box, but if you want to customize the behavior, you can do so in the settings.

src/main/kotlin/com/github/aarcangeli/ideaclangformat/ClangFormatConfig.kt

@@ -14,6 +14,8 @@ class ClangFormatConfig : SimplePersistentStateComponent<ClangFormatConfig.State
   class State : BaseState() {
     var enabled by property(true)
 
+    var formatOnSave by property(false)
+
     /// The path to the clang-format executable.
     /// If null, the plugin will try to find it in the PATH.
     var customPath by string()

src/main/kotlin/com/github/aarcangeli/ideaclangformat/configurable/AppConfigurable.kt

@@ -3,6 +3,7 @@ package com.github.aarcangeli.ideaclangformat.configurable
 import com.github.aarcangeli.ideaclangformat.ClangFormatConfig
 import com.github.aarcangeli.ideaclangformat.exceptions.ClangFormatError
 import com.github.aarcangeli.ideaclangformat.services.ClangFormatService
+import com.github.aarcangeli.ideaclangformat.utils.ClangFormatCommons
 import com.intellij.openapi.components.service
 import com.intellij.openapi.options.Configurable.NoScroll
 import com.intellij.openapi.options.DslConfigurableBase
@@ -42,6 +43,13 @@ class AppConfigurable : DslConfigurableBase(), SearchableConfigurable, NoScroll
               }
             }
         }
+        if (ClangFormatCommons.isUsingCustomFormatOnSave()) {
+          row {
+            combobox = checkBox("Format on save")
+              .bindSelected(settings::formatOnSave)
+              .enabledIf(combobox.selected)
+          }
+        }
       }
 
       group("Location") {

src/main/kotlin/com/github/aarcangeli/ideaclangformat/onsave/ClangFormatOnSave.kt

@@ -0,0 +1,29 @@
+package com.github.aarcangeli.ideaclangformat.onsave
+
+import com.github.aarcangeli.ideaclangformat.ClangFormatConfig
+import com.github.aarcangeli.ideaclangformat.services.ClangFormatService
+import com.github.aarcangeli.ideaclangformat.utils.ClangFormatCommons
+import com.intellij.ide.actionsOnSave.impl.ActionsOnSaveFileDocumentManagerListener.ActionOnSave
+import com.intellij.openapi.components.service
+import com.intellij.openapi.editor.Document
+import com.intellij.openapi.fileEditor.FileDocumentManager
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiDocumentManager
+
+class ClangFormatOnSave : ActionOnSave() {
+  override fun isEnabledForProject(project: Project): Boolean {
+    return service<ClangFormatConfig>().state.formatOnSave && ClangFormatCommons.isUsingCustomFormatOnSave()
+  }
+
+  override fun processDocuments(project: Project, documents: Array<Document?>) {
+    val fileDocumentManager = service<FileDocumentManager>()
+
+    for (document in documents) {
+      val virtualFile = fileDocumentManager.getFile(document ?: continue) ?: continue
+      val psiFile = PsiDocumentManager.getInstance(project).getPsiFile(document) ?: continue
+      if (service<ClangFormatService>().mayBeFormatted(psiFile, false)) {
+        service<ClangFormatService>().reformatFileSync(project, virtualFile)
+      }
+    }
+  }
+}

src/main/kotlin/com/github/aarcangeli/ideaclangformat/onsave/ClangFormatOnSaveActionInfo.kt

@@ -0,0 +1,33 @@
+// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.github.aarcangeli.ideaclangformat.onsave
+
+import com.github.aarcangeli.ideaclangformat.ClangFormatConfig
+import com.intellij.ide.actionsOnSave.ActionOnSaveContext
+import com.intellij.ide.actionsOnSave.ActionOnSaveInfo
+import com.intellij.openapi.components.service
+
+
+class ClangFormatOnSaveActionInfo(context: ActionOnSaveContext) : ActionOnSaveInfo(context) {
+  private val settings = service<ClangFormatConfig>().state
+  private var isFormatOnSaveEnabled: Boolean = settings.formatOnSave
+
+  override fun apply() {
+    settings.formatOnSave = isFormatOnSaveEnabled
+  }
+
+  override fun isModified(): Boolean {
+    return isFormatOnSaveEnabled != settings.formatOnSave
+  }
+
+  override fun getActionOnSaveName(): String {
+    return "Run clang-format"
+  }
+
+  override fun isActionOnSaveEnabled(): Boolean {
+    return isFormatOnSaveEnabled
+  }
+
+  override fun setActionOnSaveEnabled(enabled: Boolean) {
+    isFormatOnSaveEnabled = enabled
+  }
+}

src/main/kotlin/com/github/aarcangeli/ideaclangformat/onsave/ClangFormatOnSaveInfoProvider.kt

@@ -0,0 +1,15 @@
+package com.github.aarcangeli.ideaclangformat.onsave
+
+import com.github.aarcangeli.ideaclangformat.utils.ClangFormatCommons
+import com.intellij.ide.actionsOnSave.ActionOnSaveContext
+import com.intellij.ide.actionsOnSave.ActionOnSaveInfo
+import com.intellij.ide.actionsOnSave.ActionOnSaveInfoProvider
+
+class ClangFormatOnSaveInfoProvider : ActionOnSaveInfoProvider() {
+  override fun getActionOnSaveInfos(context: ActionOnSaveContext): Collection<ActionOnSaveInfo> {
+    if (ClangFormatCommons.isUsingCustomFormatOnSave()) {
+      return mutableListOf(ClangFormatOnSaveActionInfo(context))
+    }
+    return emptyList()
+  }
+}

src/main/kotlin/com/github/aarcangeli/ideaclangformat/utils/ClangFormatCommons.kt

@@ -133,4 +133,17 @@ object ClangFormatCommons {
     }
     return virtualFile.name
   }
+
+  /**
+   * Rider doesn't work with "Reformat on save" option, so we need to create a custom provider.
+   */
+  fun isUsingCustomFormatOnSave(): Boolean {
+    return isRider()
+  }
+
+  private fun isRider(): Boolean {
+    val prefix = System.getProperty("idea.platform.prefix", null)
+    val isRider = prefix == "Rider"
+    return isRider
+  }
 }

src/main/resources/META-INF/plugin.xml

@@ -30,6 +30,13 @@
     <applicationConfigurable id="aarcangeli.ideaclangformat.appconfig" parentId="language"
                              instance="com.github.aarcangeli.ideaclangformat.configurable.AppConfigurable"
                              displayName="Clang-Format Tools"/>
+
+    <!-- Format on save -->
+    <!-- IntelliJ already has this feature, but Rider uses his internal formatter instead -->
+    <actionOnSave id="aarcangeli.ClangFormatOnSave" implementation="com.github.aarcangeli.ideaclangformat.onsave.ClangFormatOnSave"/>
+    <actionOnSaveInfoProvider id="aarcangeli.ClangFormatOnSaveInfoProvider"
+                              implementation="com.github.aarcangeli.ideaclangformat.onsave.ClangFormatOnSaveInfoProvider"/>
+
   </extensions>
 
   <!-- BEGIN .clang-format language support -->