1) Moved net.sourceforge.phpeclipse.ui\src\net\sourceforge\phpdt back to net.sourcefo...

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/BracketPainter.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/BracketPainter.java
new file mode 100644 (file)
index 0000000..e73790b
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/BracketPainter.java
@@ -0,0 +1,179 @@
+package net.sourceforge.phpeclipse.phpeditor;
+
+/*
+ * (c) Copyright IBM Corp. 2000, 2001.
+ * All Rights Reserved.
+ */
+
+import net.sourceforge.phpdt.internal.ui.text.PHPPairMatcher;
+
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextViewerExtension5;
+import org.eclipse.jface.text.Position;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.source.ISourceViewer;
+import org.eclipse.swt.custom.StyledText;
+import org.eclipse.swt.events.PaintEvent;
+import org.eclipse.swt.events.PaintListener;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Point;
+
+public final class BracketPainter implements IPainter, PaintListener {
+
+       private PHPPairMatcher fMatcher = new PHPPairMatcher(new char[] { '{', '}',
+                       '(', ')', '[', ']' });
+
+       private Position fBracketPosition = new Position(0, 0);
+
+       private int fAnchor;
+
+       private boolean fIsActive = false;
+
+       private ISourceViewer fSourceViewer;
+
+       private StyledText fTextWidget;
+
+       private Color fColor;
+
+       private IPositionManager fPositionManager;
+
+       public BracketPainter(ISourceViewer sourceViewer) {
+               fSourceViewer = sourceViewer;
+               fTextWidget = sourceViewer.getTextWidget();
+       }
+
+       public void setHighlightColor(Color color) {
+               fColor = color;
+       }
+
+       public void dispose() {
+               if (fMatcher != null) {
+                       fMatcher.dispose();
+                       fMatcher = null;
+               }
+
+               fColor = null;
+               fTextWidget = null;
+       }
+
+       public void deactivate(boolean redraw) {
+               if (fIsActive) {
+                       fIsActive = false;
+                       fTextWidget.removePaintListener(this);
+                       if (fPositionManager != null)
+                               fPositionManager.removeManagedPosition(fBracketPosition);
+                       if (redraw)
+                               handleDrawRequest(null);
+               }
+       }
+
+       public void paintControl(PaintEvent event) {
+               if (fTextWidget != null)
+                       handleDrawRequest(event.gc);
+       }
+
+       private void handleDrawRequest(GC gc) {
+
+               if (fBracketPosition.isDeleted)
+                       return;
+
+               int offset = fBracketPosition.getOffset();
+               int length = fBracketPosition.getLength();
+               if (length < 1)
+                       return;
+
+               if (fSourceViewer instanceof ITextViewerExtension5) {
+                       ITextViewerExtension5 extension = (ITextViewerExtension5) fSourceViewer;
+                       IRegion widgetRange = extension.modelRange2WidgetRange(new Region(
+                                       offset, length));
+                       if (widgetRange == null)
+                               return;
+
+                       offset = widgetRange.getOffset();
+                       length = widgetRange.getLength();
+
+               } else {
+                       IRegion region = fSourceViewer.getVisibleRegion();
+                       if (region.getOffset() > offset
+                                       || region.getOffset() + region.getLength() < offset
+                                                       + length)
+                               return;
+                       offset -= region.getOffset();
+               }
+
+               if (PHPPairMatcher.RIGHT == fAnchor)
+                       draw(gc, offset, 1);
+               else
+                       draw(gc, offset + length - 1, 1);
+       }
+
+       private void draw(GC gc, int offset, int length) {
+               if (gc != null) {
+                       Point left = fTextWidget.getLocationAtOffset(offset);
+                       Point right = fTextWidget.getLocationAtOffset(offset + length);
+
+                       gc.setForeground(fColor);
+                       gc.drawRectangle(left.x, left.y, right.x - left.x - 1, gc
+                                       .getFontMetrics().getHeight() - 1);
+
+               } else {
+                       fTextWidget.redrawRange(offset, length, true);
+               }
+       }
+
+       /*
+        * @see IPainter#paint(int)
+        */
+       public void paint(int reason) {
+               Point selection = fSourceViewer.getSelectedRange();
+               if (selection.y > 0) {
+                       deactivate(true);
+                       return;
+               }
+
+               IRegion pair = fMatcher.match(fSourceViewer.getDocument(), selection.x);
+               if (pair == null) {
+                       deactivate(true);
+                       return;
+               }
+
+               if (fIsActive) {
+                       // only if different
+                       if (pair.getOffset() != fBracketPosition.getOffset()
+                                       || pair.getLength() != fBracketPosition.getLength()
+                                       || fMatcher.getAnchor() != fAnchor) {
+
+                               // remove old highlighting
+                               handleDrawRequest(null);
+                               // update position
+                               fBracketPosition.isDeleted = false;
+                               fBracketPosition.offset = pair.getOffset();
+                               fBracketPosition.length = pair.getLength();
+                               fAnchor = fMatcher.getAnchor();
+                               // apply new highlighting
+                               handleDrawRequest(null);
+
+                       }
+               } else {
+
+                       fIsActive = true;
+
+                       fBracketPosition.isDeleted = false;
+                       fBracketPosition.offset = pair.getOffset();
+                       fBracketPosition.length = pair.getLength();
+                       fAnchor = fMatcher.getAnchor();
+
+                       fTextWidget.addPaintListener(this);
+                       fPositionManager.addManagedPosition(fBracketPosition);
+                       handleDrawRequest(null);
+               }
+       }
+
+       /*
+        * @see IPainter#setPositionManager(IPositionManager)
+        */
+       public void setPositionManager(IPositionManager manager) {
+               fPositionManager = manager;
+       }
+}