From c6d6641aed4b0cfe4ceffdb46172bf94e6593974 Mon Sep 17 00:00:00 2001
From: Denis Zhdanov <Denis.Zhdanov@jetbrains.com>
Date: Wed, 15 Dec 2010 10:25:32 +0300
Subject: [PATCH] IDEA-62589 Soft wraps: the caret is shown in a position where
 nothing can be actually typed

1. Performing 'soft wrap -> hard wrap' conversion if user starts typing in soft wrap-introduced virtual space;
2. Corresponding test is added;
---
 .../editor/impl/SoftWrapModelImpl.java        | 13 ++++----
 ...apApplianceOnDocumentModificationTest.java | 30 +++++++++++++++++++
 2 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/platform/platform-impl/src/com/intellij/openapi/editor/impl/SoftWrapModelImpl.java b/platform/platform-impl/src/com/intellij/openapi/editor/impl/SoftWrapModelImpl.java
index 7799c6888ebe..af88b5231bd8 100644
--- a/platform/platform-impl/src/com/intellij/openapi/editor/impl/SoftWrapModelImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/editor/impl/SoftWrapModelImpl.java
@@ -446,11 +446,14 @@ public class SoftWrapModelImpl implements SoftWrapModelEx, PrioritizedDocumentLi
     if (!isInsideSoftWrap(visualCaretPosition)) {
       return;
     }
-    //TODO den implement
-    //if (myDocumentChangeManager.makeHardWrap(caretModel.getOffset())) {
-    //  // Restore caret position.
-    //  caretModel.moveToVisualPosition(visualCaretPosition);
-    //}
+
+    SoftWrap softWrap = myStorage.getSoftWrap(caretModel.getOffset());
+    if (softWrap == null) {
+      return;
+    }
+    
+    myEditor.getDocument().replaceString(softWrap.getStart(), softWrap.getEnd(), softWrap.getText());
+    caretModel.moveToVisualPosition(visualCaretPosition);
   }
 
   @Override
diff --git a/platform/platform-impl/testSrc/com/intellij/openapi/editor/impl/softwrap/mapping/SoftWrapApplianceOnDocumentModificationTest.java b/platform/platform-impl/testSrc/com/intellij/openapi/editor/impl/softwrap/mapping/SoftWrapApplianceOnDocumentModificationTest.java
index f051b7849536..d7d990ba6573 100644
--- a/platform/platform-impl/testSrc/com/intellij/openapi/editor/impl/softwrap/mapping/SoftWrapApplianceOnDocumentModificationTest.java
+++ b/platform/platform-impl/testSrc/com/intellij/openapi/editor/impl/softwrap/mapping/SoftWrapApplianceOnDocumentModificationTest.java
@@ -538,6 +538,36 @@ public class SoftWrapApplianceOnDocumentModificationTest extends AbstractEditorP
     assertEquals(expectedVisualLine, caretModel.getVisualPosition().line);
   }
   
+  public void testSoftWrapToHardWrapConversion() throws IOException {
+    String text =
+      "this is line 1\n" +
+      "this is line 2\n" +
+      "this is line 3\n" +
+      "this is line 4\n" +
+      "this is line 5";
+    
+    init(50, text);
+    VisualPosition changePosition = new VisualPosition(1, 0);
+    myEditor.getCaretModel().moveToVisualPosition(changePosition);
+    
+    int logicalLinesBefore = myEditor.offsetToLogicalPosition(text.length()).line;
+    int offsetBefore = myEditor.getCaretModel().getOffset();
+    
+    LogicalPosition logicalPositionBefore = myEditor.visualToLogicalPosition(changePosition);
+    assertEquals(1, logicalPositionBefore.softWrapLinesOnCurrentLogicalLine);
+    assertTrue(logicalPositionBefore.column > 0);
+    
+    SoftWrap softWrap = getSoftWrapModel().getSoftWrap(offsetBefore);
+    assertNotNull(softWrap);
+    
+    type('a');
+
+    LogicalPosition logicalPositionAfter = myEditor.visualToLogicalPosition(changePosition);
+    assertEquals(new LogicalPosition(1, 0, 0, 0, 0, 0, 0), logicalPositionAfter);
+    assertEquals(offsetBefore + softWrap.getText().length() + 1, myEditor.getCaretModel().getOffset());
+    assertEquals(logicalLinesBefore + 1, myEditor.offsetToLogicalPosition(text.length()).line);
+  }
+  
   //public void testPastingInsideSelection() throws IOException {
   //  String text = 
   //    "this is line number 0\n" +