Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-before / ui / org / eclipse / jdt / internal / ui / callhierarchy / CopyCallHierarchyAction.java

diff --git a/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/CopyCallHierarchyAction.java b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/CopyCallHierarchyAction.java
new file mode 100644 (file)
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+++ b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/CopyCallHierarchyAction.java
@@ -0,0 +1,137 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation
+ *          (report 36180: Callers/Callees view)
+ *******************************************************************************/
+package org.eclipse.jdt.internal.ui.callhierarchy;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringReader;
+import java.io.StringWriter;
+
+import org.eclipse.osgi.util.TextProcessor;
+
+import org.eclipse.swt.SWTError;
+import org.eclipse.swt.dnd.Clipboard;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.TextTransfer;
+import org.eclipse.swt.dnd.Transfer;
+import org.eclipse.swt.widgets.TreeItem;
+
+import org.eclipse.core.runtime.Assert;
+
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionProvider;
+
+import org.eclipse.ui.PlatformUI;
+
+import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
+import org.eclipse.jdt.internal.ui.util.SelectionUtil;
+
+class CopyCallHierarchyAction extends Action {
+       private static final char INDENTATION= '\t';
+
+       private CallHierarchyViewPart fView;
+
+       private CallHierarchyViewer fViewer;
+
+       private final Clipboard fClipboard;
+
+       public CopyCallHierarchyAction(CallHierarchyViewPart view, Clipboard clipboard, CallHierarchyViewer viewer) {
+               super(CallHierarchyMessages.CopyCallHierarchyAction_label);
+               Assert.isNotNull(clipboard);
+               PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CALL_HIERARCHY_COPY_ACTION);
+               fView= view;
+               fClipboard= clipboard;
+               fViewer= viewer;
+       }
+
+       public boolean canActionBeAdded() {
+               Object element= SelectionUtil.getSingleElement(getSelection());
+               return element != null;
+       }
+
+       private ISelection getSelection() {
+               ISelectionProvider provider= fView.getSite().getSelectionProvider();
+
+               if (provider != null) {
+                       return provider.getSelection();
+               }
+
+               return null;
+       }
+
+       /*
+        * @see IAction#run()
+        */
+       @Override
+       public void run() {
+               StringBuffer buf= new StringBuffer();
+               addCalls(fViewer.getTree().getSelection()[0], 0, buf);
+
+               TextTransfer plainTextTransfer= TextTransfer.getInstance();
+               try {
+                       fClipboard.setContents(
+                                       new String[] { convertLineTerminators(buf.toString()) },
+                                       new Transfer[] { plainTextTransfer });
+               } catch (SWTError e) {
+                       if (e.code != DND.ERROR_CANNOT_SET_CLIPBOARD)
+                               throw e;
+                       if (MessageDialog.openQuestion(fView.getViewSite().getShell(), CallHierarchyMessages.CopyCallHierarchyAction_problem, CallHierarchyMessages.CopyCallHierarchyAction_clipboard_busy))
+                               run();
+               }
+       }
+
+       /**
+        * Adds the specified {@link TreeItem}'s text to the StringBuffer.
+        * 
+        * @param item the tree item
+        * @param indent the indent size
+        * @param buf the string buffer
+        */
+       private void addCalls(TreeItem item, int indent, StringBuffer buf) {
+               for (int i= 0; i < indent; i++) {
+                       buf.append(INDENTATION);
+               }
+
+               buf.append(TextProcessor.deprocess(item.getText()));
+               buf.append('\n');
+
+               if (item.getExpanded()) {
+                       TreeItem[] items= item.getItems();
+                       for (int i= 0; i < items.length; i++) {
+                               addCalls(items[i], indent + 1, buf);
+                       }
+               }
+       }
+
+       static String convertLineTerminators(String in) {
+               StringWriter stringWriter= new StringWriter();
+               PrintWriter printWriter= new PrintWriter(stringWriter);
+               StringReader stringReader= new StringReader(in);
+               BufferedReader bufferedReader= new BufferedReader(stringReader);
+               try {
+                       String line= bufferedReader.readLine();
+                       while (line != null) {
+                               printWriter.print(line);
+                               line= bufferedReader.readLine();
+                               if (line != null && line.length() != 0)
+                                       printWriter.println();
+
+                       }
+               } catch (IOException e) {
+                       return in; // return the call hierarchy unfiltered
+               }
+               return stringWriter.toString();
+       }
+}