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[flexotask-commits] SF.net SVN: flexotask:[93] trunk/flexotask-editor/src/com/ibm/realtime/ flexotask/editor/FlexotaskClasspathInitializer.java
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From: <jsa...@us...> - 2008-11-12 19:40:37
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Revision: 93
http://flexotask.svn.sourceforge.net/flexotask/?rev=93&view=rev
Author: jsauerbach
Date: 2008-11-12 19:40:34 +0000 (Wed, 12 Nov 2008)
Log Message:
-----------
Respond immediately when the compliance level of the project changes by adding or removing the generic library from the classpath container
Modified Paths:
--------------
trunk/flexotask-editor/src/com/ibm/realtime/flexotask/editor/FlexotaskClasspathInitializer.java
Modified: trunk/flexotask-editor/src/com/ibm/realtime/flexotask/editor/FlexotaskClasspathInitializer.java
===================================================================
--- trunk/flexotask-editor/src/com/ibm/realtime/flexotask/editor/FlexotaskClasspathInitializer.java 2008-11-12 17:01:21 UTC (rev 92)
+++ trunk/flexotask-editor/src/com/ibm/realtime/flexotask/editor/FlexotaskClasspathInitializer.java 2008-11-12 19:40:34 UTC (rev 93)
@@ -20,16 +20,24 @@
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.ProjectScope;
+import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.runtime.preferences.IEclipsePreferences;
+import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener;
+import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;
import org.eclipse.jdt.core.ClasspathContainerInitializer;
import org.eclipse.jdt.core.IClasspathContainer;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
+import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.pde.core.plugin.IPluginBase;
import org.eclipse.pde.core.plugin.IPluginElement;
import org.eclipse.pde.core.plugin.IPluginExtension;
@@ -38,6 +46,9 @@
import org.eclipse.pde.core.plugin.IPluginObject;
import org.eclipse.pde.core.plugin.ISharedPluginModel;
import org.eclipse.pde.core.plugin.PluginRegistry;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.PlatformUI;
import org.osgi.framework.Bundle;
import org.osgi.framework.Version;
@@ -48,7 +59,7 @@
/** The id of this container */
public static final String CONTAINER_ID= "com.ibm.realtime.flexotask.editor.classpath";
- /** The two-segment path used to designate this container in some contexts */
+ /** The two-segment path used to designate this container in some contexts */
public final static IPath CONTAINER_PATH = new Path(CONTAINER_ID).append("1.0");
/** The id of the realtime analysis plugin and hence its bundle */
@@ -59,18 +70,23 @@
/** The id of the flexotask generic plugin and hence its bundle */
public final static String FLEXOTASK_GENERIC_PLUGIN = "com.ibm.realtime.flexotask.generic";
-
+
/** File that is used as the debugging assistance file (built by all flexotask projects that may be put in a classpath container) */
public static final String DEBUG_FILE = "debug.zip";
+ /** The preference key that indicates the Java compliance level */
+ private final static String COMPLIANCE_KEY = "org.eclipse.jdt.core.compiler.compliance";
+
/** Special flag to allow the mechanism for running under a debugger itself to be debugged */
private static final boolean DEBUG_DEBUGGING = Boolean.valueOf(System.getProperty("FLEXOTASK_DEBUG_DEBUGGING"));
- private static final String SOURCE_EXTENSION_POINT = "org.eclipse.pde.core.source";
+ /** The extension point for adding sources to the PDE */
+ private static final String SOURCE_EXTENSION_POINT = "org.eclipse.pde.core.source";
+ /** The set of source paths provided by the PDE */
private static IPath[] sourcePaths;
- /**
+ /**
* A 0-argument constructor is required
*/
public FlexotaskClasspathInitializer() {}
@@ -83,8 +99,21 @@
!CONTAINER_ID.equals(containerPath.segment(0))) {
return;
}
- List<IClasspathEntry> entryList = new ArrayList<IClasspathEntry>();
- String compliance = project.getOption("org.eclipse.jdt.core.compiler.compliance", true);
+ reInitialize(containerPath, project);
+ IEclipsePreferences preferences = new ProjectScope(project.getProject()).getNode(JavaCore.PLUGIN_ID);
+ preferences.addPreferenceChangeListener(new ComplianceChangeListener(containerPath, project));
+ }
+
+ /**
+ * Working subroutine of initialize(), also called when the compliance preference of the project changes
+ * @param containerPath the container path to use
+ * @param project the JavaProject to use
+ * @throws CoreException if anything goes wrong
+ */
+ private void reInitialize(IPath containerPath, IJavaProject project) throws CoreException
+ {
+ List<IClasspathEntry> entryList = new ArrayList<IClasspathEntry>();
+ String compliance = project.getOption(COMPLIANCE_KEY, true);
if (compliance.compareTo("1.4") > 0) {
addPluginClasspath(entryList, FLEXOTASK_GENERIC_PLUGIN);
}
@@ -95,7 +124,7 @@
IClasspathContainer container = new FlexotaskClasspath(entries, containerPath);
JavaCore.setClasspathContainer(containerPath, new IJavaProject[]{project},
new IClasspathContainer[]{container}, null);
- }
+ }
/**
* Utility to add a plugin's contribution to an accumulating classpath
@@ -191,8 +220,8 @@
}
return null;
}
-
- /**
+
+ /**
* Convert a source archive name to a full relative path using Eclipse conventions for source plugins.
* This closely resembles a similar function in the PDE that is not accessible from outside the PDE
* implementation.
@@ -216,7 +245,7 @@
return null;
}
}
-
+
/**
* Compute all the paths to places that might have source. This code is based on similar code in the
* PDE that is not accessible from outside. It is not actually as complete since it does not take into
@@ -253,4 +282,54 @@
}
return sourcePaths;
}
+
+ /**
+ * A PreferenceChangeListener to notice when the compliance level of a project changes
+ */
+ private final class ComplianceChangeListener implements IPreferenceChangeListener
+ {
+ /** The container path to use for reinitialization */
+ private IPath containerPath;
+
+ /** The project whose changes are being listened for */
+ private IJavaProject project;
+
+ /**
+ * Make a new ComplianceChangeListener
+ * @param containerPath container path to use for reinitialization
+ * @param project project whose changes are being listened for
+ */
+ ComplianceChangeListener(IPath containerPath, IJavaProject project)
+ {
+ this.containerPath = containerPath;
+ this.project = project;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener#preferenceChange(org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent)
+ */
+ public void preferenceChange(PreferenceChangeEvent event)
+ {
+ String key = event.getKey();
+ if (COMPLIANCE_KEY.equals(key)) {
+ try {
+ reInitialize(containerPath, project);
+ } catch (CoreException e) {
+ IStatus status = e.getStatus();
+ if (status == null) {
+ status = new Status(Status.ERROR, EEditPlugin.ID, e.getMessage(), e);
+ }
+ ResourcesPlugin.getPlugin().getLog().log(status);
+ final IStatus istatus = status;
+ Display display = PlatformUI.getWorkbench().getDisplay();
+ final Shell shell = display.getActiveShell();
+ display.syncExec(new Runnable() {
+ public void run() {
+ ErrorDialog.openError(shell, "Error updating classpath", istatus.getMessage(), istatus);
+ }
+ });
+ }
+ }
+ }
+ }
}
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