Add delegated properties for working with PropertiesComponent

2026-09-27 10:03:11 +07:00 · 2018-07-16 14:42:20 +02:00
parent f9f63d2f1b
commit f0100fcf8e
1 changed files with 54 additions and 0 deletions
@@ -0,0 +1,54 @@
+// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.intellij.ide.util
+
+import com.intellij.openapi.project.Project
+import kotlin.properties.ReadWriteProperty
+import kotlin.reflect.KProperty
+
+/**
+ * @author yole
+ */
+private fun propComponent(project: Project?): PropertiesComponent {
+  return if (project == null) PropertiesComponent.getInstance() else PropertiesComponent.getInstance(project)
+}
+
+private fun propName(thisRef: Any, property: KProperty<*>) = thisRef::class.qualifiedName + "." + property.name
+
+private class PropertiesComponentIntProperty(private val project: Project?, private val defaultValue: Int) : ReadWriteProperty<Any, Int> {
+  override fun getValue(thisRef: Any, property: KProperty<*>): Int {
+    return propComponent(project).getInt(propName(thisRef, property), defaultValue)
+  }
+
+  override fun setValue(thisRef: Any, property: KProperty<*>, value: Int) {
+    propComponent(project).setValue(propName(thisRef, property), value, defaultValue)
+  }
+}
+
+private class PropertiesComponentStringProperty(private val project: Project?, private val defaultValue: String) : ReadWriteProperty<Any, String> {
+  override fun getValue(thisRef: Any, property: KProperty<*>): String {
+    return propComponent(project).getValue(propName(thisRef, property), defaultValue)
+  }
+
+  override fun setValue(thisRef: Any, property: KProperty<*>, value: String) {
+    propComponent(project).setValue(propName(thisRef, property), value, defaultValue)
+  }
+}
+
+private class PropertiesComponentBooleanProperty(private val project: Project?, private val defaultValue: Boolean) : ReadWriteProperty<Any, Boolean> {
+  override fun getValue(thisRef: Any, property: KProperty<*>): Boolean {
+    return propComponent(project).getBoolean(propName(thisRef, property), defaultValue)
+  }
+
+  override fun setValue(thisRef: Any, property: KProperty<*>, value: Boolean) {
+    propComponent(project).setValue(propName(thisRef, property), value, defaultValue)
+  }
+}
+
+fun propComponentProperty(project: Project? = null, defaultValue: Int = 0): ReadWriteProperty<Any, Int> =
+  PropertiesComponentIntProperty(project, defaultValue)
+
+fun propComponentProperty(project: Project? = null, defaultValue: String = ""): ReadWriteProperty<Any, String> =
+  PropertiesComponentStringProperty(project, defaultValue)
+
+fun propComponentProperty(project: Project? = null, defaultValue: Boolean = false): ReadWriteProperty<Any, Boolean> =
+  PropertiesComponentBooleanProperty(project, defaultValue)