From 2ae2828aad626424e62c1944669dafa64738e7de Mon Sep 17 00:00:00 2001
From: Anna Bulenkova <anna.bulenkova@jetbrains.com>
Date: Mon, 29 Dec 2014 13:12:14 +0100
Subject: [PATCH] [code] Logical and visual positions, offset

---
 editor_basics/resources/META-INF/plugin.xml   |  4 +++
 .../editor/basics/EditorAreaIllustration.java | 32 +++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 editor_basics/src/org/jetbrains/plugins/editor/basics/EditorAreaIllustration.java

diff --git a/editor_basics/resources/META-INF/plugin.xml b/editor_basics/resources/META-INF/plugin.xml
index c2a0976f2..bda6329d8 100644
--- a/editor_basics/resources/META-INF/plugin.xml
+++ b/editor_basics/resources/META-INF/plugin.xml
@@ -33,6 +33,10 @@
             description="Illustrates how to plug an action in">
       <add-to-group group-id="EditorPopupMenu" anchor="last"/>
     </action>
+    <action id="EditorBasics.LogicalPositionIllustration" class="org.jetbrains.plugins.editor.basics.EditorAreaIllustration" text="Caret Position"
+            description="Illustrates how editor area is organized">
+      <add-to-group group-id="EditorPopupMenu" anchor="last"/>
+    </action>
   </actions>
 
 </idea-plugin>
\ No newline at end of file
diff --git a/editor_basics/src/org/jetbrains/plugins/editor/basics/EditorAreaIllustration.java b/editor_basics/src/org/jetbrains/plugins/editor/basics/EditorAreaIllustration.java
new file mode 100644
index 000000000..49d9de1f0
--- /dev/null
+++ b/editor_basics/src/org/jetbrains/plugins/editor/basics/EditorAreaIllustration.java
@@ -0,0 +1,32 @@
+package org.jetbrains.plugins.editor.basics;
+
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.CommonDataKeys;
+import com.intellij.openapi.editor.*;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.ui.Messages;
+
+/**
+ * @author Anna Bulenkova
+ */
+public class EditorAreaIllustration extends AnAction {
+    @Override
+    public void actionPerformed(AnActionEvent anActionEvent) {
+        final Editor editor = anActionEvent.getRequiredData(CommonDataKeys.EDITOR);
+        CaretModel caretModel = editor.getCaretModel();
+        LogicalPosition logicalPosition = caretModel.getLogicalPosition();
+        VisualPosition visualPosition = caretModel.getVisualPosition();
+        int offset = caretModel.getOffset();
+        Messages.showInfoMessage("Logical position: " + logicalPosition.toString() + "\n" +
+                "Visual position: " + visualPosition.toString() + "\n" +
+                "Offset: " + offset, "Caret Parameters Inside The Editor");
+    }
+
+    @Override
+    public void update(AnActionEvent e) {
+        final Project project = e.getData(CommonDataKeys.PROJECT);
+        final Editor editor = e.getData(CommonDataKeys.EDITOR);
+        e.getPresentation().setVisible(project != null && editor != null);
+    }
+}