[StickyScrolling] Use source viewer to calculate the sticky lines

[Christopher-Hermann]

Use the source viewer instead of the text widget to calculate the sticky lines. The source viewer is the standard instance for source code operations in JDT and other editors.

Preparation for #2398

[eclipse-platform-bot]

This pull request changes some projects for the first time in this development cycle.
Therefore the following files need a version increment:

bundles/org.eclipse.ui.editors/META-INF/MANIFEST.MF
tests/org.eclipse.ui.editors.tests/META-INF/MANIFEST.MF

An additional commit containing all the necessary changes was pushed to the top of this PR's branch. To obtain these changes (for example if you want to push more changes) either fetch from your fork or apply the git patch.

Git patch

From abf0494ed5cb91ee2d70f4f2c3867ee20d2c6df1 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <[email protected]>
Date: Wed, 4 Dec 2024 13:11:56 +0000
Subject: [PATCH] Version bump(s) for 4.35 stream


diff --git a/bundles/org.eclipse.ui.editors/META-INF/MANIFEST.MF b/bundles/org.eclipse.ui.editors/META-INF/MANIFEST.MF
index 96c4987c88..9a63a5630f 100644
--- a/bundles/org.eclipse.ui.editors/META-INF/MANIFEST.MF
+++ b/bundles/org.eclipse.ui.editors/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.ui.editors; singleton:=true
-Bundle-Version: 3.19.0.qualifier
+Bundle-Version: 3.19.100.qualifier
 Bundle-Activator: org.eclipse.ui.internal.editors.text.EditorsPlugin
 Bundle-ActivationPolicy: lazy
 Bundle-Vendor: %providerName
diff --git a/tests/org.eclipse.ui.editors.tests/META-INF/MANIFEST.MF b/tests/org.eclipse.ui.editors.tests/META-INF/MANIFEST.MF
index 74a27a2c7f..506d79157e 100644
--- a/tests/org.eclipse.ui.editors.tests/META-INF/MANIFEST.MF
+++ b/tests/org.eclipse.ui.editors.tests/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %Plugin.name
 Bundle-SymbolicName: org.eclipse.ui.editors.tests;singleton:=true
-Bundle-Version: 3.13.600.qualifier
+Bundle-Version: 3.13.700.qualifier
 Bundle-Vendor: %Plugin.providerName
 Bundle-Localization: plugin
 Export-Package: org.eclipse.jface.text.tests.codemining,
-- 
2.47.1

Further information are available in Common Build Issues - Missing version increments.

[github-actions]

Test Results

 1 821 files  + 1 821   1 821 suites  +1 821   2h 1m 38s ⏱️ + 2h 1m 38s
 7 726 tests + 7 726   7 496 ✅ + 7 496  228 💤 +228  2 ❌ +2 
24 339 runs  +24 339  23 590 ✅ +23 590  747 💤 +747  2 ❌ +2 

For more details on these failures, see this check.

Results for commit ca78295. ± Comparison against base commit ce9874f.

[Christopher-Hermann]

Failing tests are unrelated...