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1 /** |
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2 * Copyright (c) 2010 Symbian Foundation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Symbian Foundation - initial contribution. |
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11 * Contributors: |
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12 * Description: |
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13 * Overview: |
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14 * Details: |
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15 * Platforms/Drives/Compatibility: |
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16 * Assumptions/Requirement/Pre-requisites: |
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17 * Failures and causes: |
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18 */ |
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19 package org.symbian.tools.tmw.previewer.internal; |
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20 |
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21 import java.io.InputStream; |
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22 import java.util.HashMap; |
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23 import java.util.Map; |
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24 |
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25 import org.eclipse.core.resources.IFile; |
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26 import org.eclipse.core.resources.IProject; |
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27 import org.eclipse.core.runtime.CoreException; |
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28 import org.eclipse.core.runtime.IConfigurationElement; |
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29 import org.eclipse.core.runtime.IPath; |
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30 import org.eclipse.core.runtime.Platform; |
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31 import org.symbian.tools.tmw.core.TMWCore; |
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32 import org.symbian.tools.tmw.core.projects.ITMWProject; |
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33 import org.symbian.tools.tmw.core.runtimes.IMobileWebRuntime; |
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34 import org.symbian.tools.tmw.previewer.core.IApplicationLayoutProvider; |
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35 import org.symbian.tools.tmw.previewer.core.IPreviewerExtensionsManager; |
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36 import org.symbian.tools.wrttools.previewer.PreviewerPlugin; |
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37 |
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38 public class PreviewerExtensionsManagerImpl implements IPreviewerExtensionsManager { |
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39 public static final class LazyProvider implements IApplicationLayoutProvider { |
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40 private final IConfigurationElement element; |
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41 private IApplicationLayoutProvider instance; |
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42 |
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43 public LazyProvider(IConfigurationElement element) { |
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44 this.element = element; |
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45 } |
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46 |
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47 public IPath getResourcePath(IFile file) { |
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48 return getDelegate().getResourcePath(file); |
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49 } |
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50 |
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51 private IApplicationLayoutProvider getDelegate() { |
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52 if (instance == null) { |
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53 try { |
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54 instance = (IApplicationLayoutProvider) element.createExecutableExtension("class"); |
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55 } catch (CoreException e) { |
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56 PreviewerPlugin.log(e); |
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57 instance = new IApplicationLayoutProvider() { |
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58 |
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59 public IPath getResourcePath(IFile file) { |
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60 return null; |
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61 } |
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62 |
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63 public InputStream getResourceFromPath(IProject project, IPath path) { |
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64 return null; |
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65 } |
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66 |
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67 public IFile getWorkspaceFile(IProject project, IPath applicationPath) { |
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68 return null; |
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69 } |
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70 }; |
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71 } |
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72 } |
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73 return instance; |
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74 } |
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75 |
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76 public InputStream getResourceFromPath(IProject project, IPath path) throws CoreException { |
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77 return getDelegate().getResourceFromPath(project, path); |
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78 } |
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79 |
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80 public IFile getWorkspaceFile(IProject project, IPath applicationPath) throws CoreException { |
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81 return getDelegate().getWorkspaceFile(project, applicationPath); |
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82 } |
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83 } |
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84 |
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85 private Map<IMobileWebRuntime, IApplicationLayoutProvider> providers; |
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86 |
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87 public IApplicationLayoutProvider getLayoutProvider(IProject project) { |
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88 final ITMWProject p = TMWCore.create(project); |
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89 if (p != null && p.getTargetRuntime() != null) { |
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90 checkRegistry(); |
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91 return providers.get(p.getTargetRuntime()); |
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92 } |
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93 return null; |
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94 } |
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95 |
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96 private synchronized void checkRegistry() { |
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97 if (providers == null) { |
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98 providers = new HashMap<IMobileWebRuntime, IApplicationLayoutProvider>(); |
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99 final IConfigurationElement[] configuration = Platform.getExtensionRegistry().getConfigurationElementsFor( |
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100 PreviewerPlugin.PLUGIN_ID, "layoutProviders"); |
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101 for (IConfigurationElement element : configuration) { |
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102 final String runtimeId = element.getAttribute("runtime-id"); |
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103 final String version = element.getAttribute("runtime-version"); |
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104 final IMobileWebRuntime runtime = TMWCore.getRuntimesManager().getRuntime(runtimeId, version); |
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105 if (runtime != null) { |
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106 providers.put(runtime, new LazyProvider(element)); |
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107 } else { |
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108 PreviewerPlugin.log(String.format("Runtime %s:$s referenced from %s was not found", runtimeId, |
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109 version, element.getContributor().getName()), null); |
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110 } |
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111 } |
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112 } |
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113 } |
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114 } |