removed NPE in XMLPreferenceInitializer

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/PHPAnnotationHover.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/PHPAnnotationHover.java
index f5f0e60..552183e 100644 (file)
--- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/PHPAnnotationHover.java
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/PHPAnnotationHover.java
@@ -9,17 +9,24 @@ http://www.eclipse.org/legal/cpl-v10.html
 
 Contributors:
     IBM Corporation - Initial implementation
-    Klaus Hartlage - www.eclipseproject.de
+    www.phpeclipse.de
 **********************************************************************/
 
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.core.resources.IMarker;
 import org.eclipse.jface.text.BadLocationException;
 import org.eclipse.jface.text.IDocument;
-import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.Position;
 import org.eclipse.jface.text.source.IAnnotationHover;
+import org.eclipse.jface.text.source.IAnnotationModel;
 import org.eclipse.jface.text.source.ISourceViewer;
+import org.eclipse.ui.texteditor.MarkerAnnotation;
 
 /** 
- * The JavaAnnotationHover provides the hover support for java editors.
+ * The PHPAnnotationHover provides the hover support for PHP editors.
  */
  
 public class PHPAnnotationHover implements IAnnotationHover {
@@ -27,15 +34,154 @@ public class PHPAnnotationHover implements IAnnotationHover {
        /* (non-Javadoc)
         * Method declared on IAnnotationHover
         */
-       public String getHoverInfo(ISourceViewer sourceViewer, int lineNumber) {
-               IDocument document= sourceViewer.getDocument();
+//     public String getHoverInfo(ISourceViewer sourceViewer, int lineNumber) {
+//             IDocument document= sourceViewer.getDocument();
+//
+//             try {
+//                     IRegion info= document.getLineInformation(lineNumber);
+//                     return document.get(info.getOffset(), info.getLength());
+//             } catch (BadLocationException x) {
+//             }
+//
+//             return null;
+//     }
+//     
+  static final int MAX_INFO_LENGTH = 80;
+
+  /**
+   * @see org.eclipse.jface.text.source.IAnnotationHover#getHoverInfo(org.eclipse.jface.text.source.ISourceViewer, int)
+   */
+       
+  public String getHoverInfo(ISourceViewer viewer, int line) {
+    String info = null;
+    List markers = getMarkersForLine(viewer, line);
+    if (markers != null) {
+      info = "";
+      for (int i =  0; i < markers.size(); i++) {
+        IMarker marker = (IMarker) markers.get(i);
+        String message =
+          marker.getAttribute(IMarker.MESSAGE, (String) null);
+        if (message != null && message.trim().length() > 0) {
+                                       
+          if (message.length() > MAX_INFO_LENGTH) {
+            message = splitMessage(message);
+          }
+          info += message;
+                                       
+          if(i != markers.size() - 1) {
+             info += "\n";
+          }
+        }
+      }
+    }
+    return info;
+  }
+
+  private String splitMessage(String message) {
+    String result = "";
+               
+    if(message.length() <= MAX_INFO_LENGTH) {
+      return message;
+    }
+               
+    String tmpStr = new String(message);
+               
+    while(tmpStr.length() > MAX_INFO_LENGTH) {
+                       
+      int spacepos = tmpStr.indexOf(" ", MAX_INFO_LENGTH);
+                       
+      if(spacepos != -1) {
+        result += tmpStr.substring(0, spacepos) + "\n";
+        tmpStr = tmpStr.substring(spacepos);
+      }
+      else {
+        result += tmpStr.substring(0, MAX_INFO_LENGTH) + "\n";
+        tmpStr = tmpStr.substring(MAX_INFO_LENGTH);
+      }
+                       
+                       
+                       
+    }
+               
+    result += tmpStr;
+               
+    return result;
+  }
+
+  /**
+   * Returns all markers which includes the ruler's line of activity.
+   */
+  protected List getMarkersForLine(ISourceViewer aViewer, int aLine) {
+    List markers = new ArrayList();
+    IAnnotationModel model = aViewer.getAnnotationModel();
+    if (model != null) {
+      Iterator e = model.getAnnotationIterator();
+      while (e.hasNext()) {
+        Object o = e.next();
+        if (o instanceof MarkerAnnotation) {
+          MarkerAnnotation a = (MarkerAnnotation) o;
+          if (compareRulerLine(model.getPosition(a),
+            aViewer.getDocument(),
+            aLine)
+            != 0) {
+            markers.add(a.getMarker());
+          }
+        }
+      }
+    }
+    return markers;
+  }
 
-               try {
-                       IRegion info= document.getLineInformation(lineNumber);
-                       return document.get(info.getOffset(), info.getLength());
-               } catch (BadLocationException x) {
-               }
+  /**
+   * Returns one marker which includes the ruler's line of activity.
+   */
+  protected IMarker getMarkerForLine(ISourceViewer aViewer, int aLine) {
+    IMarker marker = null;
+    IAnnotationModel model = aViewer.getAnnotationModel();
+    if (model != null) {
+      Iterator e = model.getAnnotationIterator();
+      while (e.hasNext()) {
+        Object o = e.next();
+        if (o instanceof MarkerAnnotation) {
+          MarkerAnnotation a = (MarkerAnnotation) o;
+          if (compareRulerLine(model.getPosition(a),
+            aViewer.getDocument(),
+            aLine)
+            != 0) {
+            marker = a.getMarker();
+          }
+        }
+      }
+    }
+    return marker;
+  }
 
-               return null;
-       }
+  /**
+   * Returns distance of given line to specified position (1 = same line,
+   * 2 = included in given position, 0 = not related).
+   */
+  protected int compareRulerLine(
+    Position aPosition,
+    IDocument aDocument,
+    int aLine) {
+    int distance = 0;
+    if (aPosition.getOffset() > -1 && aPosition.getLength() > -1) {
+      try {
+        int markerLine =
+          aDocument.getLineOfOffset(aPosition.getOffset());
+        if (aLine == markerLine) {
+          distance = 1;
+        } else if (
+          markerLine <= aLine
+            && aLine
+              <= aDocument.getLineOfOffset(
+                aPosition.getOffset()
+                  + aPosition.getLength())) {
+          distance = 2;
+        }
+      } catch (BadLocationException e) {
+      }
+    }
+    return distance;
+  }
 }