commit 9ee0a1f16682139c5be28a05d33e980123da4c6f
author Andreas Heinisch <andreas.heinisch@yahoo.de> Mon May 20 07:58:03 2019 +0200
committer Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de> Mon May 20 15:44:41 2019 +0200
tree b6013a19ccd98b6c8fe76d1888c7ad98dbeb619e
parent 1bfbe2a44021ca4ae6716caa39fc8a375914be5c

tdf#97635 Added unindentation using shift-tab (mimicked eclipse's behavior)

Moved shift+tab check to the keyPressed function to provide continuous insertion
and compiled tab-pattern only once

Change-Id: Iffe847fea07295075dc1a280f0697e8c798e8d6f
Reviewed-on: https://gerrit.libreoffice.org/72580
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
Tested-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

scripting/java/com/sun/star/script/framework/provider/beanshell/PlainSourceView.java

diff --git a/scripting/java/com/sun/star/script/framework/provider/beanshell/PlainSourceView.java b/scripting/java/com/sun/star/script/framework/provider/beanshell/PlainSourceView.java
index 581ef48..cc1e22e 100644
--- a/scripting/java/com/sun/star/script/framework/provider/beanshell/PlainSourceView.java
+++ b/scripting/java/com/sun/star/script/framework/provider/beanshell/PlainSourceView.java
@@ -63,6 +63,8 @@ public class PlainSourceView extends JScrollPane implements
    UndoManager undoManager;
    private List<UnsavedChangesListener> unsavedListener = new ArrayList<UnsavedChangesListener>();

    private static final Pattern tabPattern = Pattern.compile("^ *(?<tab>\\t)");

    public PlainSourceView(ScriptSourceModel model) {
        this.model = model;
        initUI();
@@ -173,7 +175,7 @@ public class PlainSourceView extends JScrollPane implements

        ta.addKeyListener(new KeyAdapter(){
            @Override
            public void keyReleased(KeyEvent ke){
            public void keyPressed(KeyEvent ke) {
                // if shift + tab was pressed, remove the first tab before any code begins
                if (ke.isShiftDown() && ke.getKeyCode() == KeyEvent.VK_TAB) {
                    try {
@@ -182,17 +184,18 @@ public class PlainSourceView extends JScrollPane implements
                        int startOffset = ta.getLineStartOffset(lineOffset);
                        int endOffset = ta.getLineEndOffset(lineOffset);

                        Pattern pattern = Pattern.compile("^ *(\\t)");
                        Matcher matcher = pattern.matcher(ta.getText(startOffset, endOffset - startOffset));

                        Matcher matcher = tabPattern.matcher(ta.getText(startOffset, endOffset - startOffset));
                        if (matcher.find()) {
                            ta.replaceRange(null, startOffset + matcher.start(1), startOffset + matcher.end(1));
                            ta.replaceRange(null, startOffset + matcher.start("tab"), startOffset + matcher.end("tab"));
                        }
                    } catch (BadLocationException e) {
                        // could not find correct location of the tab
                    }
                }
            }

            @Override
            public void keyReleased(KeyEvent ke){
                if(ke.getKeyCode() == KeyEvent.VK_SPACE || ke.getKeyCode() == KeyEvent.VK_ENTER){
                    compoundEdit.end();
                    undoManager.addEdit(compoundEdit);