1 /**

     2  * Copyright (c) 2010 Symbian Foundation and/or its subsidiary(-ies).

     3  * All rights reserved.

     4  * This component and the accompanying materials are made available

     5  * under the terms of the License "Eclipse Public License v1.0"

     6  * which accompanies this distribution, and is available

     7  * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8  *

     9  * Initial Contributors:

    10  * Symbian Foundation - initial contribution.

    11  * Contributors:

    12  * Description:

    13  * Overview:

    14  * Details:

    15  * Platforms/Drives/Compatibility:

    16  * Assumptions/Requirement/Pre-requisites:

    17  * Failures and causes:

    18  */

    19 package org.symbian.tools.tmw.previewer.internal;

    20 

    21 import java.util.Collection;

    22 import java.util.HashMap;

    23 import java.util.HashSet;

    24 import java.util.Map;

    25 

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

    27 import org.eclipse.core.resources.IProject;

    28 import org.eclipse.core.resources.IResource;

    29 import org.eclipse.core.resources.IResourceDelta;

    30 import org.eclipse.core.resources.IResourceDeltaVisitor;

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

    32 import org.eclipse.core.runtime.IPath;

    33 import org.symbian.tools.tmw.previewer.core.IApplicationLayoutProvider;

    34 import org.symbian.tools.wrttools.previewer.PreviewerPlugin;

    35 

    36 public class PreviewerUtil {

    37     public static final class ChangedResourcesCollector implements IResourceDeltaVisitor {

    38         public final Collection<IFile> files = new HashSet<IFile>();

    39         public final Collection<IProject> deleted = new HashSet<IProject>();

    40         public final Map<IProject, IPath> renamed = new HashMap<IProject, IPath>();

    41 

    42         public boolean visit(IResourceDelta delta) throws CoreException {

    43             IResource resource = delta.getResource();

    44             switch (resource.getType()) {

    45             case IResource.PROJECT:

    46                 if (delta.getKind() == IResourceDelta.REMOVED) {

    47                     if ((delta.getFlags() & IResourceDelta.MOVED_TO) != 0) {

    48                         renamed.put(resource.getProject(), delta.getMovedToPath());

    49                     } else {

    50                         deleted.add((IProject) resource);

    51                     }

    52                     return false;

    53                 }

    54                 break;

    55             case IResource.FILE:

    56                 IApplicationLayoutProvider layoutProvider = PreviewerPlugin.getExtensionsManager().getLayoutProvider(

    57                         resource.getProject());

    58                 if (layoutProvider != null) {

    59                     if (layoutProvider.getResourcePath((IFile) resource) != null) {

    60                         final boolean kind = delta.getKind() == IResourceDelta.ADDED

    61                                 | delta.getKind() == IResourceDelta.REMOVED;

    62                         final boolean flag = (delta.getFlags() & (IResourceDelta.CONTENT | IResourceDelta.ENCODING

    63                                 | IResourceDelta.LOCAL_CHANGED | IResourceDelta.REPLACED | IResourceDelta.SYNC)) != 0;

    64                         if (kind || flag) {

    65                             files.add((IFile) resource);

    66                         }

    67                     }

    68                 }

    69                 break;

    70             }

    71             return true;

    72         }

    73     }

    74 

    75     public static boolean isRelevantResource(IResource resource) {

    76         if (resource.exists() && resource.getType() == IResource.FILE) {

    77             return !resource.getFullPath().segment(1).equalsIgnoreCase("preview")

    78                     && !"wgz".equalsIgnoreCase(resource.getFileExtension())

    79                     && !(PreviewerPlugin.PLUGIN_ID + ".xml").equals(resource.getName());

    80         }

    81         return false;

    82     }

    83 

    84     public static IFile[] getWebChanges(final IResourceDelta delta) {

    85         ChangedResourcesCollector visitor = collectResourceChanges(delta);

    86         final Collection<IFile> files = visitor.files;

    87         return files.toArray(new IFile[files.size()]);

    88     }

    89 

    90     public static ChangedResourcesCollector collectResourceChanges(final IResourceDelta delta) {

    91         ChangedResourcesCollector visitor = new ChangedResourcesCollector();

    92         try {

    93             delta.accept(visitor);

    94         } catch (CoreException e) {

    95             PreviewerPlugin.log(e);

    96         }

    97         return visitor;

    98     }

    99 }