refactory: added UI removed from core plugin.

[phpeclipse.git] / net.sourceforge.phpeclipse.ui / src / net / sourceforge / phpdt / internal / ui / text / java / hover / JavaSourceHover.java

diff --git a/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/JavaSourceHover.java b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/JavaSourceHover.java
new file mode 100644 (file)
index 0000000..f8dd369
--- /dev/null
+++ b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/JavaSourceHover.java
@@ -0,0 +1,117 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package net.sourceforge.phpdt.internal.ui.text.java.hover;
+
+import java.io.IOException;
+
+import net.sourceforge.phpdt.core.IJavaElement;
+import net.sourceforge.phpdt.core.IMember;
+import net.sourceforge.phpdt.core.ISourceReference;
+import net.sourceforge.phpdt.core.JavaModelException;
+import net.sourceforge.phpdt.internal.ui.text.HTMLPrinter;
+import net.sourceforge.phpdt.internal.ui.text.PHPCodeReader;
+import net.sourceforge.phpdt.internal.ui.viewsupport.JavaElementLabels;
+import net.sourceforge.phpeclipse.ui.WebUI;
+//import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+
+import org.eclipse.jface.text.Document;
+import org.eclipse.jface.text.IDocument;
+
+/**
+ * Provides source as hover info for Java elements.
+ */
+public class JavaSourceHover extends AbstractJavaEditorTextHover {
+
+       private final int LABEL_FLAGS = JavaElementLabels.ALL_FULLY_QUALIFIED
+                       | JavaElementLabels.M_PRE_RETURNTYPE
+                       | JavaElementLabels.M_PARAMETER_TYPES
+                       | JavaElementLabels.M_PARAMETER_NAMES
+                       | JavaElementLabels.M_EXCEPTIONS
+                       | JavaElementLabels.F_PRE_TYPE_SIGNATURE;
+
+       /*
+        * @see JavaElementHover
+        */
+       protected String getHoverInfo(IJavaElement[] result) {
+               int nResults = result.length;
+               StringBuffer buffer = new StringBuffer();
+
+               if (nResults > 1) {
+
+                       for (int i = 0; i < result.length; i++) {
+                               HTMLPrinter.startBulletList(buffer);
+                               IJavaElement curr = result[i];
+                               if (curr instanceof IMember)
+                                       HTMLPrinter.addBullet(buffer, getInfoText((IMember) curr));
+                               HTMLPrinter.endBulletList(buffer);
+                       }
+
+               } else {
+
+                       IJavaElement curr = result[0];
+                       if (curr instanceof IMember && curr instanceof ISourceReference) {
+                               HTMLPrinter.addSmallHeader(buffer,
+                                               getInfoText(((IMember) curr)));
+                               try {
+                                       String source = ((ISourceReference) curr).getSource();
+                                       source = removeLeadingComments(source);
+                                       HTMLPrinter.addParagraph(buffer, "<pre>"); //$NON-NLS-1$
+                                       HTMLPrinter.addParagraph(buffer, source);
+                                       HTMLPrinter.addParagraph(buffer, "</pre>"); //$NON-NLS-1$
+                               } catch (JavaModelException ex) {
+                                       // only write small header
+                               }
+                       }
+               }
+
+               if (buffer.length() > 0) {
+                       HTMLPrinter.insertPageProlog(buffer, 0);
+                       HTMLPrinter.addPageEpilog(buffer);
+                       return buffer.toString();
+               }
+
+               return null;
+       }
+
+       private String getInfoText(IMember member) {
+               return JavaElementLabels.getElementLabel(member, LABEL_FLAGS);
+       }
+
+       private String removeLeadingComments(String source) {
+               PHPCodeReader reader = new PHPCodeReader();
+               IDocument document = new Document(source);
+               int i;
+               try {
+                       reader.configureForwardReader(document, 0, document.getLength(),
+                                       true, false);
+                       int c = reader.read();
+                       while (c != -1 && (c == '\r' || c == '\n')) {
+                               c = reader.read();
+                       }
+                       i = reader.getOffset();
+                       reader.close();
+               } catch (IOException ex) {
+                       i = 0;
+               } finally {
+                       try {
+                               if (reader != null)
+                                       reader.close();
+                       } catch (IOException ex) {
+                               WebUI.log(ex);
+                       }
+               }
+
+               if (i < 0)
+                       return source;
+               return source.substring(i);
+       }
+}