1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     4 

     5 package org.chromium.debug.ui.actions;

     6 

     7 import java.io.ByteArrayInputStream;

     8 import java.io.InputStream;

     9 import java.lang.reflect.InvocationTargetException;

    10 

    11 import org.chromium.debug.core.model.VmResource;

    12 import org.eclipse.compare.CompareConfiguration;

    13 import org.eclipse.compare.CompareEditorInput;

    14 import org.eclipse.compare.CompareUI;

    15 import org.eclipse.compare.IModificationDate;

    16 import org.eclipse.compare.IStreamContentAccessor;

    17 import org.eclipse.compare.ITypedElement;

    18 import org.eclipse.compare.structuremergeviewer.DiffNode;

    19 import org.eclipse.compare.structuremergeviewer.Differencer;

    20 import org.eclipse.core.resources.IFile;

    21 import org.eclipse.core.runtime.CoreException;

    22 import org.eclipse.core.runtime.IProgressMonitor;

    23 import org.eclipse.swt.graphics.Image;

    24 

    25 /**

    26  * A very preliminary implementation of action that should let user compare his script with

    27  * its current state on remote VM.

    28  */

    29 public class CompareChangesAction extends V8ScriptAction {

    30   @Override

    31   protected void execute(FilePair filePair) {

    32     LiveEditCompareInput input = new LiveEditCompareInput(filePair.getFile(), filePair.getVmResource());

    33     CompareUI.openCompareEditor(input);

    34   }

    35 

    36   private static class LiveEditCompareInput extends CompareEditorInput {

    37     private final IFile file;

    38     private final VmResource script;

    39 

    40     LiveEditCompareInput(IFile file, VmResource vmResource) {

    41       super(createCompareConfiguration());

    42       this.file = file;

    43       this.script = vmResource;

    44     }

    45 

    46     private static CompareConfiguration createCompareConfiguration() {

    47       return new CompareConfiguration();

    48     }

    49 

    50     @Override

    51     protected Object prepareInput(IProgressMonitor monitor) throws InvocationTargetException,

    52         InterruptedException {

    53 

    54       abstract class CompareItem implements ITypedElement, IStreamContentAccessor,

    55           IModificationDate {

    56         public Image getImage() {

    57           return null;

    58         }

    59         public String getType() {

    60           return TEXT_TYPE;

    61         }

    62         public long getModificationDate() {

    63           return 0;

    64         }

    65       }

    66       CompareItem left = new CompareItem() {

    67         public String getName() {

    68           return "Local file " + file.getName(); //$NON-NLS-1$

    69         }

    70         public InputStream getContents() throws CoreException {

    71           return file.getContents();

    72         }

    73       };

    74       CompareItem right = new CompareItem() {

    75         public String getName() {

    76           return "File in VM " + script.getFileName(); //$NON-NLS-1$

    77         }

    78         public InputStream getContents() throws CoreException {

    79           return new ByteArrayInputStream(script.getScript().getSource().getBytes());

    80         }

    81       };

    82       DiffNode diffNode = new DiffNode(null, Differencer.PSEUDO_CONFLICT, null, left, right);

    83       return diffNode;

    84     }

    85   }

    86 }