some changes

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/PHPTextHover.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/PHPTextHover.java
index 3f8e79a..f4e6582 100644 (file)
--- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/PHPTextHover.java
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/PHPTextHover.java
@@ -11,41 +11,56 @@ Contributors:
 **********************************************************************/
 package net.sourceforge.phpeclipse.phpeditor;
 
+import java.util.HashMap;
 
-import org.eclipse.swt.graphics.Point;
+import net.sourceforge.phpeclipse.phpeditor.php.PHPFunctionDescription;
+import net.sourceforge.phpeclipse.phpeditor.php.PHPFunctionNames;
+import net.sourceforge.phpeclipse.phpeditor.php.PHPWordExtractor;
 import org.eclipse.jface.text.BadLocationException;
 import org.eclipse.jface.text.IRegion;
 import org.eclipse.jface.text.ITextHover;
 import org.eclipse.jface.text.ITextViewer;
 import org.eclipse.jface.text.Region;
+import org.eclipse.swt.graphics.Point;
 
 /**
  * Example implementation for an <code>ITextHover</code> 
  * which hovers over PHP code.
  */
 public class PHPTextHover implements ITextHover {
+  public static HashMap functionDescriptions = null;
+  
+  private static PHPWordExtractor phpWordDetector = new PHPWordExtractor();
+  /* (non-Javadoc)
+   * Method declared on ITextHover
+   */
+  public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
+    if (hoverRegion != null) {
+      try {
+        if (hoverRegion.getLength() > -1) {
+          String word = textViewer.getDocument().get(hoverRegion.getOffset(), hoverRegion.getLength());
+          if (functionDescriptions==null) {
+            functionDescriptions = new HashMap(997);
+            for (int i=0; i<PHPFunctionNames.FUNCTION_NAMES.length;i++) {
+              functionDescriptions.put(PHPFunctionNames.FUNCTION_NAMES[i],PHPFunctionDescription.FUNCTION_DESCRIPTION[i]);
+            }
+          }
+          return (String) functionDescriptions.get(word);
+        }
+      } catch (BadLocationException x) {
+      }
+    }
+    return "empty selection";
+  }
 
-       /* (non-Javadoc)
-        * Method declared on ITextHover
-        */
-       public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
-               if (hoverRegion != null) {
-                       try {
-                               if (hoverRegion.getLength() > -1)
-                                       return textViewer.getDocument().get(hoverRegion.getOffset(), hoverRegion.getLength());
-                       } catch (BadLocationException x) {
-                       }
-               }
-               return "empty selection";
-       }
-       
-       /* (non-Javadoc)
-        * Method declared on ITextHover
-        */
-       public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
-               Point selection= textViewer.getSelectedRange();
-               if (selection.x <= offset && offset < selection.x + selection.y)
-                       return new Region(selection.x, selection.y);
-               return new Region(offset, 0);
-       }
+  /* (non-Javadoc)
+   * Method declared on ITextHover
+   */
+  public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
+    Point selection = PHPWordExtractor.findWord(textViewer.getDocument(), offset);
+//  show the extracted word as a tooltip
+    if (selection!=null && selection.x <= offset && offset < selection.x + selection.y)
+      return new Region(selection.x, selection.y);
+    return new Region(offset, 0);
+  }
 }