smart select/unselect api

platform/platform-api/src/com/intellij/openapi/ide/SmartSelectProvider.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2000-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.openapi.ide;
+
+import com.intellij.openapi.actionSystem.DataContext;
+import com.intellij.openapi.extensions.ExtensionPointName;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public interface SmartSelectProvider<T> {
+  ExtensionPointName<SmartSelectProvider> EP = ExtensionPointName.create("smartSelectProvider");
+
+  void increaseSelection(T source);
+
+  void decreaseSelection(T source);
+
+  default boolean isEnabled(DataContext context) {
+    return getSource(context) != null;
+  }
+
+  @Nullable
+  T getSource(DataContext context);
+}

platform/platform-impl/src/com/intellij/ide/actions/SmartSelect.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2000-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.ide.actions;
+
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.DataContext;
+import com.intellij.openapi.ide.SmartSelectProvider;
+import com.intellij.openapi.project.DumbAwareAction;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public class SmartSelect extends DumbAwareAction {
+  @Override
+  public void actionPerformed(AnActionEvent e) {
+    SmartSelectProvider provider = getProvider(e.getDataContext());
+    assert provider != null;
+    //noinspection unchecked
+    provider.increaseSelection(provider.getSource(e.getDataContext()));
+  }
+
+  @Override
+  public void update(AnActionEvent e) {
+    e.getPresentation().setEnabled(getProvider(e.getDataContext()) != null);
+  }
+
+  public SmartSelectProvider getProvider(DataContext context) {
+    for (SmartSelectProvider provider : SmartSelectProvider.EP.getExtensions()) {
+      if (provider.isEnabled(context)) {
+        return provider;
+      }
+    }
+    return null;
+  }
+}

platform/platform-impl/src/com/intellij/ide/actions/SmartUnSelect.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2000-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.ide.actions;
+
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.ide.SmartSelectProvider;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public class SmartUnSelect extends SmartSelect {
+  @Override
+  public void actionPerformed(AnActionEvent e) {
+    SmartSelectProvider provider = getProvider(e.getDataContext());
+    assert provider != null;
+    //noinspection unchecked
+    provider.decreaseSelection(provider.getSource(e.getDataContext()));
+  }
+}

platform/platform-resources/src/META-INF/PlatformExtensionPoints.xml

@@ -290,6 +290,7 @@
     <extensionPoint name="reporting.sendPermission" interface="com.intellij.reporting.DataSendPermission"/>
 
     <extensionPoint name="tasks.contextProvider" interface="com.intellij.tasks.context.WorkingContextProvider" area="IDEA_PROJECT"/>
+    <extensionPoint name="smartSelectProvider" interface="com.intellij.openapi.ide.SmartSelectProvider"/>
 
   </extensionPoints>
 </idea-plugin>

platform/platform-resources/src/idea/PlatformActions.xml

@@ -57,6 +57,8 @@
       <keyboard-shortcut first-keystroke="shift ENTER" keymap="$default"/>
     </action>>
     <action id="SearchEverywhere" class="com.intellij.ide.actions.SearchEverywhereAction" />
+    <action id="SmartSelect" class="com.intellij.ide.actions.SmartSelect" use-shortcut-of="EditorSelectWord"/>
+    <action id="SmartUnSelect" class="com.intellij.ide.actions.SmartUnSelect" use-shortcut-of="EditorUnSelectWord"/>
 
     <group id="TemplateParametersNavigation">
       <action id="NextTemplateParameter" class="com.intellij.codeInsight.completion.NextPrevParameterAction$Next" text="Next Parameter">