Fixing some bugs and making the plug-in compatible with Java 1.4

[phpeclipse.git] / net.sourceforge.phpeclipse.phpmanual / src / net / sourceforge / phpeclipse / phpmanual / views / PHPManualView.java

diff --git a/net.sourceforge.phpeclipse.phpmanual/src/net/sourceforge/phpeclipse/phpmanual/views/PHPManualView.java b/net.sourceforge.phpeclipse.phpmanual/src/net/sourceforge/phpeclipse/phpmanual/views/PHPManualView.java
index 09233d3..4089f0e 100644 (file)
--- a/net.sourceforge.phpeclipse.phpmanual/src/net/sourceforge/phpeclipse/phpmanual/views/PHPManualView.java
+++ b/net.sourceforge.phpeclipse.phpmanual/src/net/sourceforge/phpeclipse/phpmanual/views/PHPManualView.java
@@ -7,6 +7,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
 import java.util.ArrayList;
+import java.util.regex.Matcher;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 
@@ -29,6 +30,7 @@ import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.browser.Browser;
 import org.eclipse.ui.IEditorPart;
+import org.eclipse.ui.INullSelectionListener;
 import org.eclipse.ui.ISelectionListener;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.part.ViewPart;
@@ -57,7 +59,7 @@ import org.osgi.framework.Bundle;
  * <p>
  * @author scorphus
  */
-public class PHPManualView extends ViewPart implements ISelectionListener, ISelectionListenerWithAST {
+public class PHPManualView extends ViewPart implements INullSelectionListener, ISelectionListenerWithAST {
 
        /**
         * The ViewPart's browser
@@ -71,6 +73,11 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
        private PHPEditor lastEditor;
 
        /**
+        * String that stores the last selected word
+        */
+       private String lastOccurrence = null;
+
+       /**
         * The path to the doc.zip file containing the PHP Manual
         * in HTML format
         */
@@ -95,7 +102,7 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
                        SelectionListenerWithASTManager.getDefault().addListener(lastEditor, this);
                }
                getSite().getWorkbenchWindow().getSelectionService()
-                               .addSelectionListener(PHPeclipsePlugin.EDITOR_ID, this);
+                               .addPostSelectionListener(PHPeclipsePlugin.EDITOR_ID, this);
        }
 
        /**
@@ -103,7 +110,7 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
         */
        public void dispose() {
                getSite().getWorkbenchWindow().getSelectionService()
-                               .removeSelectionListener(PHPeclipsePlugin.EDITOR_ID, this);
+                               .removePostSelectionListener(PHPeclipsePlugin.EDITOR_ID, this);
        }
 
        /**
@@ -120,12 +127,17 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
                IDocument document = ((PHPEditor)part).getViewer().getDocument();
                int offset = selection.getOffset();
                IRegion iRegion = JavaWordFinder.findWord(document, offset);
-               try {
-                       final String wordStr = document.get(iRegion.getOffset(),
-                                       iRegion.getLength());
-                       showReference(wordStr);
-               } catch (Exception e) {
-                       e.printStackTrace();
+               if (document != null && iRegion != null) {
+                       try {
+                               final String wordStr = document.get(iRegion.getOffset(),
+                                               iRegion.getLength());
+                               if (!wordStr.equalsIgnoreCase(lastOccurrence)) {
+                                       showReference(wordStr);                         
+                                       lastOccurrence = wordStr;
+                               }
+                       } catch (Exception e) {
+                               e.printStackTrace();
+                       }
                }
        }
 
@@ -134,9 +146,11 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
         * instance of PHPEditor it gets a listener attached
         */
        public void selectionChanged(IWorkbenchPart part, ISelection selection) {
-               if (!((PHPEditor)part).equals(lastEditor)) {
+               if (part != null && !((PHPEditor)part).equals(lastEditor)) {
                        SelectionListenerWithASTManager.getDefault().addListener((PHPEditor)part, this);
                        lastEditor = (PHPEditor)part;
+               } else {
+                       System.out.println(part);
                }
        }
 
@@ -169,7 +183,7 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
                try {
                        Parser parser = new Parser(source);
                        String [] tagsToBeFound = {"DIV"};
-                       ArrayList<String> classList = new ArrayList<String>(6);
+                       ArrayList classList = new ArrayList(8);
                        classList.add("refnamediv");
                        classList.add("refsect1 description");
                        classList.add("refsect1 parameters");
@@ -180,14 +194,14 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
                        TagFindingVisitor visitor = new TagFindingVisitor(tagsToBeFound);
                        parser.visitAllNodesWith(visitor);
                        Node [] allPTags = visitor.getTags(0);
-                       StringBuilder output = new StringBuilder();
+                       StringBuffer output = new StringBuffer();
                        for (int i = 0; i < allPTags.length; i++) {
                                String tagClass = ((Div)allPTags[i]).getAttribute("class");
                                if (classList.contains(tagClass)) {
                                        output.append(allPTags[i].toHtml());
                                }
                        }
-                       return output.toString().replace("—", "-");
+                       return output.toString().replaceAll("—", "-");
                        //.replace("<h3 class=\"title\">Description</h3>", " ");
                } catch (ParserException e) {
                        e.printStackTrace();
@@ -233,10 +247,38 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
        }
 
        /**
-        * Looks for the function's reference page inside the doc.zip file
-        * and returns a filtered HTML source of it embedded in the template
-        *  
-        * @param funcName Function name
+        * Replaces each substring of source string that matches the
+        * given pattern string with the given replace string
+        * 
+        * @param source The source string
+        * @param pattern The pattern string
+        * @param replace The replace string
+        * @return The resulting String
+        */
+       public static String replace(String source, String pattern, String replace) {
+               if (source != null) {
+                       final int len = pattern.length();
+                       StringBuffer sb = new StringBuffer();
+                       int found = -1;
+                       int start = 0;
+                       while ((found = source.indexOf(pattern, start)) != -1) {
+                               sb.append(source.substring(start, found));
+                               sb.append(replace);
+                               start = found + len;
+                       }
+                       sb.append(source.substring(start));
+                       return sb.toString();
+               } else {
+                       return "";
+               }
+       }
+
+       /**
+        * Looks for the function's reference page inside the doc.zip file and
+        * returns a filtered HTML source of it embedded in the template
+        * 
+        * @param funcName
+        *            Function name
         * @return HTML source of reference page
         */
        public String getHtmlSource(String funcName) {
@@ -250,15 +292,17 @@ public class PHPManualView extends ViewPart implements ISelectionListener, ISele
                        InputStream ref = docFile.getInputStream(entry);
                        b = new byte[(int)entry.getSize()];
                        ref.read(b, 0, (int)entry.getSize());
+                       if (b != null) {
+                               String reference = filterHtmlSource(new String(b));
+                               String refPageTpl = getRefPageTemplate();
+                               refPageTpl = refPageTpl.replaceAll("%title%", funcName);
+                               refPageTpl = replace(refPageTpl, "%reference%", reference);
+                               return refPageTpl;
+                       }
                } catch (IOException e) {
                        return "<html></html>";
-               }
-               if (b != null) {
-                       String reference = filterHtmlSource(new String(b));
-                       String refPageTpl = getRefPageTemplate();
-                       refPageTpl = refPageTpl.replace("{title}", funcName);
-                       refPageTpl = refPageTpl.replace("{reference}", reference);
-                       return refPageTpl;
+               } catch (Exception e) {
+                       return null;
                }
                return "<html></html>";
        }