Bug 343086 - [StyledText] Horizontal scroll bar vanishes when line gets

shorter

StyledText did not reclaim free horizontal space on line split.

Change-Id: I32840d30ecfa6f430a9b85e3e2a986b1ed50819a
Signed-off-by: Paul Pazderski <paul-eclipse@ppazderski.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_custom_StyledText.java b/tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_custom_StyledText.java
index 286617bfa1..72d7232728 100644
--- a/tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_custom_StyledText.java
+++ b/tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_custom_StyledText.java
@@ -5806,6 +5806,7 @@ public void test_clipboardCarryover() {
 /**
  * Test for:
  * Bug 553377 - StyledTextRenderer max width can be invalid
+ * Bug 343086 - Horizontal scroll bar vanishes when line gets shorter
  */
 @Test
 public void test_claimRightFreeSpace() {
@@ -5832,6 +5833,14 @@ public void test_claimRightFreeSpace() {
 			text.getHorizontalIndex() < lastScrollIndex && text.getHorizontalIndex() > 0);
 	n -= cutLenght;
 
+	// test if widget reclaims horizontal space if longest line is shortened because line get split
+	int newlineOffset = n - 5;
+	text.setCaretOffset(newlineOffset - 2);
+	lastScrollIndex = text.getHorizontalIndex();
+	text.getContent().replaceTextRange(newlineOffset, 0, "\n");
+	assertTrue("Free horizontal space not reclaimed on splitting line",
+			text.getHorizontalIndex() < lastScrollIndex && text.getHorizontalIndex() > 0);
+
 	// similar to previous test but this time the second half of the split is the new max length line
 	text.setCaretOffset(0);
 	text.setHorizontalIndex(100);