improved code formatter

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpeclipse / phpeditor / JavaSourceViewer.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/JavaSourceViewer.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/JavaSourceViewer.java
index 80e6949..2dae127 100644 (file)
--- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/JavaSourceViewer.java
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/JavaSourceViewer.java
@@ -12,13 +12,20 @@
 package net.sourceforge.phpeclipse.phpeditor;
 
 
-import org.eclipse.swt.widgets.Composite;
-
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.IRewriteTarget;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.formatter.FormattingContextProperties;
+import org.eclipse.jface.text.formatter.IContentFormatterExtension2;
+import org.eclipse.jface.text.formatter.IFormattingContext;
 import org.eclipse.jface.text.information.IInformationPresenter;
 import org.eclipse.jface.text.source.IOverviewRuler;
 import org.eclipse.jface.text.source.IVerticalRuler;
 import org.eclipse.jface.text.source.SourceViewer;
 import org.eclipse.jface.text.source.SourceViewerConfiguration;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Composite;
 
 //import net.sourceforge.phpdt.ui.text.JavaSourceViewerConfiguration;
 
@@ -58,6 +65,60 @@ public class JavaSourceViewer extends SourceViewer {
                        case OPEN_STRUCTURE:
                                fStructurePresenter.showInformation();
                                return;
+                       case FORMAT :
+                       {
+                               final Point selection= rememberSelection();
+
+                               final IDocument document= getDocument();
+                               IRegion region= new Region(selection.x, selection.y);
+                               if (region.getLength()==0) {
+                                 region = new Region(0, document.getLength());
+                               }
+                               final IRewriteTarget target= getRewriteTarget();
+                               final IFormattingContext context= createFormattingContext();
+
+                               if (selection.y == 0) {
+                                       context.setProperty(FormattingContextProperties.CONTEXT_DOCUMENT, Boolean.TRUE);
+                               } else {
+                                       context.setProperty(FormattingContextProperties.CONTEXT_DOCUMENT, Boolean.FALSE);
+                                       context.setProperty(FormattingContextProperties.CONTEXT_REGION, region);
+                               }
+                               try {
+                                       setRedraw(false);
+                                       startSequentialRewriteMode(false);
+                                       target.beginCompoundChange();
+
+                                       final String rememberedContents= document.get();
+                                       
+                                       try {
+                                               
+                                               if (fContentFormatter instanceof IContentFormatterExtension2) {
+                                                       
+                                                       final IContentFormatterExtension2 extension= (IContentFormatterExtension2)fContentFormatter;
+                                                       extension.format(document, context);
+                                                       
+                                               } else
+                                                       fContentFormatter.format(document, region);
+                                               
+                                       } catch (RuntimeException x) {
+                                               // firewall for https://bugs.eclipse.org/bugs/show_bug.cgi?id=47472
+                                               // if something went wrong we undo the changes we just did
+                                               // TODO to be removed
+                                               document.set(rememberedContents);
+                                               throw x;
+                                       }
+                                       
+                               } finally {
+
+                                       target.endCompoundChange();
+                                       stopSequentialRewriteMode();
+                                       setRedraw(true);
+
+                                       restoreSelection();
+                                       context.dispose();
+                               }
+                               return;
+                       }
                }
                
                super.doOperation(operation);