/**********************************************************************
- * Copyright (c) 2005, 2008, 2011 IBM Corporation and others.
+ * Copyright (c) 2005, 2013 IBM Corporation, Ericsson
* 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
- * $Id: LoadersManager.java,v 1.5 2008/01/24 02:29:16 apnan Exp $
- *
- * Contributors:
- * IBM - Initial API and implementation
- * Bernd Hufmann - Updated for TMF
+ *
+ * Contributors:
+ * IBM - Initial API and implementation
+ * Bernd Hufmann - Updated for TMF
**********************************************************************/
+
package org.eclipse.linuxtools.tmf.ui.views.uml2sd.load;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
+import java.util.Map;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.preference.IPreferenceStore;
-import org.eclipse.linuxtools.tmf.core.Tracer;
-import org.eclipse.linuxtools.tmf.ui.TmfUiPlugin;
+import org.eclipse.linuxtools.internal.tmf.ui.Activator;
import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDView;
import org.eclipse.ui.IViewReference;
import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.PlatformUI;
/**
* Manager class for the UML2SD extension point.
+ *
+ * @version 1.0
+ * @author sveyrier
+ * @author Bernd Hufmann
*/
public class LoadersManager {
// ------------------------------------------------------------------------
- // Attributes
+ // Constants
// ------------------------------------------------------------------------
-
+ /**
+ * The loader tag for the extension point.
+ */
public static final String LOADER_TAG = "uml2SDLoader"; //$NON-NLS-1$
+ /**
+ * The loader prefix.
+ */
public static final String LOADER_PREFIX = LOADER_TAG + "."; //$NON-NLS-1$
- // The instance
- private static LoadersManager loadersManager;
+ // ------------------------------------------------------------------------
+ // Attributes
+ // ------------------------------------------------------------------------
+
+ /**
+ * The LoadersManager singleton instance.
+ */
+ private static LoadersManager fLoadersManager;
+
+ /**
+ * Map for caching information (view ID to loader class)
+ */
+ private Map<String, IUml2SDLoader> fViewLoaderMap = new HashMap<>();
+ /**
+ * Map for caching information (view ID to list of configuration elements)
+ */
+ private Map<String, ArrayList<IConfigurationElement>> fViewLoadersList = new HashMap<>();
- // Maps for caching information
- protected HashMap<String, IUml2SDLoader> fViewLoaderMap = new HashMap<String, IUml2SDLoader>();
- protected HashMap<String, ArrayList<IConfigurationElement>> fViewLoadersList = new HashMap<String, ArrayList<IConfigurationElement>>();
-
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
/**
* This should not be used by the clients
*/
- private LoadersManager() {
+ protected LoadersManager() {
}
// ------------------------------------------------------------------------
// ------------------------------------------------------------------------
/**
* A static method to get the manager instance.
- *
+ *
* @return the manager instance
*/
- public static LoadersManager getInstance() {
- if (loadersManager == null) {
- loadersManager = new LoadersManager();
+ public static synchronized LoadersManager getInstance() {
+ if (fLoadersManager == null) {
+ fLoadersManager = new LoadersManager();
}
- return loadersManager;
+ return fLoadersManager;
}
-
+
/**
* Creates a loader instance and associate it to the view. It requires
* that the loader-view-association was created by an eclipse extension.
- *
+ *
* @param className The name of the class to create an instance from
* @param view The UML2 Sequence Diagram view instance
* @return The created loader
return loader;
}
}
- return null;
+ return null;
}
/**
* Sets the loader to null for this view, a kind of clean-up while disposing.
- *
+ *
* @param viewId the id of the view
*/
public void resetLoader(String viewId) {
- IUml2SDLoader loader = (IUml2SDLoader) fViewLoaderMap.get(viewId);
+ IUml2SDLoader loader = fViewLoaderMap.get(viewId);
if (loader != null) {
loader.dispose();
}
/**
* Returns the loader in use in given Sequence Diagram View
- *
+ *
* @param viewId The Sequence Diagram viewId.
* @return the current loader if any - null otherwise
*/
/**
* Returns the loader in use in this Sequence Diagram View
- *
+ *
* @param viewId The Sequence Diagram viewId
* @param view The Sequence Diagram view (if known). Use null to reference the primary SD View.
* @return the current loader if any - null otherwise
return null;
}
- IWorkbenchPage persp = TmfUiPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getActivePage();
+ IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
+ // During Eclipse shutdown the active workbench window is null
+ if (window == null) {
+ return null;
+ }
+
+ IWorkbenchPage persp = window.getActivePage();
SDView sdView = view;
try {
// Search the view corresponding to the viewId
if (sdView == null) {
- IViewReference viewref = (IViewReference) persp.findViewReference(viewId);
+ IViewReference viewref = persp.findViewReference(viewId);
if (viewref != null) {
sdView = (SDView) viewref.getView(false);
}
-
+
if (sdView == null) {
// no corresponding view exists -> return null for the loader
return null;
return loader;
} catch (Exception e) {
- if (Tracer.isErrorTraced()) {
- Tracer.traceError("Exception during getCurrentLoder(): " + e); //$NON-NLS-1$
- }
+ Activator.getDefault().logError("Error getting loader class", e); //$NON-NLS-1$
}
return null;
}
/**
* Returns the loader class name that have been saved last time.
- *
+ *
* @param viewId The view this loader belongs to
* @return the class name of the saved loader
*/
public String getSavedLoader(String viewId) {
- IPreferenceStore p = TmfUiPlugin.getDefault().getPreferenceStore();
+ IPreferenceStore p = Activator.getDefault().getPreferenceStore();
return p.getString(LOADER_PREFIX + viewId);
}
/**
* Saves the last loader in order to reload it on next session.
+ *
+ * @param id
+ * Standalone ID of the loader
+ * @param id2
+ * Suffix ID of the loader
*/
public void saveLastLoader(String id, String id2) {
- IPreferenceStore p = TmfUiPlugin.getDefault().getPreferenceStore();
+ IPreferenceStore p = Activator.getDefault().getPreferenceStore();
p.setValue(LOADER_PREFIX + id2, id);
}
/**
* Changes the current unique loader to the given secondary viewId.
- *
+ *
* @param loader The current loader
* @param id the view secondary id or null
*/
if ((currentLoader != null) && (currentLoader != loader)) {
if (loader != null) {
- IWorkbenchPage persp = TmfUiPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getActivePage();
+ IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
+ // During Eclipse shutdown the active workbench window is null
+ if (window == null) {
+ return;
+ }
+ IWorkbenchPage persp = window.getActivePage();
try {
// Search view corresponding to the viewId
SDView sdview = null;
- IViewReference viewref = (IViewReference) persp.findViewReference(id);
+ IViewReference viewref = persp.findViewReference(id);
if (viewref != null) {
sdview = (SDView) viewref.getView(false);
}
}
} catch (Exception e) {
- e.printStackTrace();
+ Activator.getDefault().logError("Error setting current loader class", e); //$NON-NLS-1$
}
}
// The old loader is going to be kicked
saveLastLoader(loader.getClass().getName(), id);
}
}
-
+
/**
* Creates the last loader and saves it. If not last is not available, it creates
* and saves the default loader, else no loader is created.
- *
+ *
* @param viewId The view ID.
*/
private void createLastLoaderIfAny(String viewId) {
* @return List of extension point configuration elements.
*/
private List<IConfigurationElement> getLoaderConfigurationElements(String viewId) {
- List<IConfigurationElement> list = (List<IConfigurationElement>) fViewLoadersList.get(viewId);
+ List<IConfigurationElement> list = fViewLoadersList.get(viewId);
if (list != null) {
return list;
}
- ArrayList<IConfigurationElement> ret = new ArrayList<IConfigurationElement>();
- IExtensionPoint iep = Platform.getExtensionRegistry().getExtensionPoint(TmfUiPlugin.PLUGIN_ID, LOADER_TAG);
+
+ ArrayList<IConfigurationElement> ret = new ArrayList<>();
+ IExtensionPoint iep = Platform.getExtensionRegistry().getExtensionPoint(Activator.PLUGIN_ID, LOADER_TAG);
if (iep == null) {
return ret;
}
-
+
IExtension[] ie = iep.getExtensions();
if (ie == null) {
return ret;
}
/**
- * Returns the loader configuration element for given loader class name and for the given
+ * Returns the loader configuration element for given loader class name and for the given
* list of configuration elements, if available else null.
- *
+ *
* @param loaderClassName The loader class name.
* @param loaderElements The list of loader configuration elements
- * @return Extension point configuration element
+ * @return Extension point configuration element
*/
- private IConfigurationElement getLoaderConfigurationElement(String loaderClassName, List<IConfigurationElement> loaderElements) {
+ private static IConfigurationElement getLoaderConfigurationElement(
+ String loaderClassName, List<IConfigurationElement> loaderElements) {
if (loaderClassName != null && loaderClassName.length() > 0) {
// Find configuration element corresponding to the saved loader
for (Iterator<IConfigurationElement> i = loaderElements.iterator(); i.hasNext();) {
- IConfigurationElement ce = (IConfigurationElement) i.next();
+ IConfigurationElement ce = i.next();
if (ce.getAttribute("class").equals(loaderClassName)) { //$NON-NLS-1$
return ce;
}
}
/**
- * Returns the loader configuration element for the given list of configuration elements, if available else null.
+ * Returns the loader configuration element for the given list of configuration elements, if available else null.
* Note that if multiple default loaders are defined it selects the first one
* @param loaderElements The list of loader configuration elements
* @return The default extension point configuration element.
*/
- private IConfigurationElement getDefaultLoader(List<IConfigurationElement> loaderElements) {
+ private static IConfigurationElement getDefaultLoader(
+ List<IConfigurationElement> loaderElements) {
// Look for a default loader
for (Iterator<IConfigurationElement> i = loaderElements.iterator(); i.hasNext();) {
- IConfigurationElement ce = (IConfigurationElement) i.next();
+ IConfigurationElement ce = i.next();
if (Boolean.valueOf(ce.getAttribute("default")).booleanValue()) { //$NON-NLS-1$
return ce;
}
/**
* Creates an instance of the loader class for a given extension point configuration element and
* also sets it as current loader for the given view.
+ *
* @param viewId The view ID.
* @param ce The extension point configuration element
*/
setCurrentLoader(l, viewId);
}
} catch (CoreException e4) {
- System.err.println("Error 'uml2SDLoader' Extension point :" + e4); //$NON-NLS-1$
+ Activator.getDefault().logError("Error 'uml2SDLoader' Extension point", e4); //$NON-NLS-1$
} catch (Exception e5) {
- e5.printStackTrace();
- System.err.println("Error 'uml2SDLoader' Extension point :" + e5); //$NON-NLS-1$
+ Activator.getDefault().logError("Error 'uml2SDLoader' Extension point", e5); //$NON-NLS-1$
}
}
}
projects / deliverable / tracecompass.git / blobdiff