Targets extension point

7 files changed, 199 insertions, 2 deletions

diff --git a/bundles/org.eclipse.team.core/plugin.properties b/bundles/org.eclipse.team.core/plugin.properties
index b6888863d..045bc3486 100644
--- a/bundles/org.eclipse.team.core/plugin.properties
+++ b/bundles/org.eclipse.team.core/plugin.properties
@@ -1,4 +1,5 @@
 pluginName = Team Support Core
 FileTypesRegistry=File Types Registry
 GlobalIgnoreRegistry=Global Ignore Registry
-TeamProjectSets=Team Project Sets
\ No newline at end of file
+TeamProjectSets=Team Project Sets
+Targets=Target Provider and Location Factories
\ No newline at end of file
diff --git a/bundles/org.eclipse.team.core/plugin.xml b/bundles/org.eclipse.team.core/plugin.xml
index cf1475485..3826b708d 100644
--- a/bundles/org.eclipse.team.core/plugin.xml
+++ b/bundles/org.eclipse.team.core/plugin.xml
@@ -20,6 +20,7 @@
 <extension-point id="fileTypes" name="%FileTypesRegistry"/>
 <extension-point id="ignore" name="%GlobalIgnoreRegistry"/>
 <extension-point id="projectSets" name="%TeamProjectSets"/>
+<extension-point id="targets" name="%Targets"/>
 
 <!-- Define some example text extensions. This will be done
      by other plugins later. -->
diff --git a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/TeamPlugin.java b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/TeamPlugin.java
index 7032f2bd2..9c6d87e7d 100644
--- a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/TeamPlugin.java
+++ b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/TeamPlugin.java
@@ -15,6 +15,7 @@ import org.eclipse.core.runtime.IPluginDescriptor;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Plugin;
 import org.eclipse.core.runtime.Status;
+import org.eclipse.team.core.target.TargetManager;
 import org.eclipse.team.internal.core.Policy;
 
 /**
@@ -42,6 +43,10 @@ final public class TeamPlugin extends Plugin {
 	public static final String IGNORE_EXTENSION = "ignore"; //$NON-NLS-1$
 	// The id of the project set extension point
 	public static final String PROJECT_SET_EXTENSION = "projectSets"; //$NON-NLS-1$
+	// The id of the targets extension point
+	public static final String TARGETS_EXTENSION = "targets"; //$NON-NLS-1$
+
+
 	// The one and only plug-in instance
 	private static TeamPlugin plugin;	
 
@@ -59,6 +64,7 @@ final public class TeamPlugin extends Plugin {
 	public void startup() throws CoreException {
 		Policy.localize("org.eclipse.team.internal.core.messages"); //$NON-NLS-1$
 		Team.startup();
+		TargetManager.startup();
 	}
 	
 	/**
diff --git a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/ITargetFactory.java b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/ITargetFactory.java
new file mode 100644
index 000000000..bb88affa7
--- /dev/null
+++ b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/ITargetFactory.java
@@ -0,0 +1,19 @@
+package org.eclipse.team.core.target;
+
+/**
+ * @version 	1.0
+ * @author
+ */
+public interface ITargetFactory {
+	
+	/**
+	 * Return a new target location for the given encoded description.
+	 */	
+	public TargetLocation decode(String serializedLocation);
+
+	/**
+	 * Return a new target provider for the given location.
+	 */	
+	public TargetProvider newTarget(TargetLocation location);
+
+}
diff --git a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/TargetLocation.java b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/TargetLocation.java
new file mode 100644
index 000000000..eae2440e2
--- /dev/null
+++ b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/TargetLocation.java
@@ -0,0 +1,19 @@
+package org.eclipse.team.core.target;
+
+/**
+ * @version 	1.0
+ * @author
+ */
+public abstract class TargetLocation {
+
+	/*
+	 * Initialize a new TargetLocation of the given type.
+	 */
+	 
+	public TargetLocation() {
+		super();
+	}
+	
+	public abstract String getType();
+	public abstract String encode();
+}
diff --git a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/TargetManager.java b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/TargetManager.java
new file mode 100644
index 000000000..856e37b76
--- /dev/null
+++ b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/TargetManager.java
@@ -0,0 +1,150 @@
+package org.eclipse.team.core.target;
+
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Hashtable;
+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.IExtension;
+import org.eclipse.core.runtime.IExtensionPoint;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.team.core.*;
+import org.eclipse.team.internal.core.*;
+import org.eclipse.team.core.target.*;
+
+/**
+ * @version 	1.0
+ * @author
+ */
+public class TargetManager {
+	private static final String TARGET_LOCATIONS_FILE = ".targetLocations";
+
+	private static Map factories = new Hashtable();
+	private static List locations = new ArrayList();
+	
+	
+	public static ITargetFactory getFactory(String id) {
+		ITargetFactory factory = (ITargetFactory) factories.get(id);
+		if(factory == null) {
+			factory = getTargetFactory(id);
+			if(factory != null) {
+				factories.put(id, factory);
+				return factory;
+			}
+		}
+		return null;
+	}
+	
+	public static void startup() {
+		readLocations();
+	}
+
+	public static void save() {
+		writeLocations();
+	}
+
+	public static TargetLocation[] getLocations() {
+		return (TargetLocation[]) locations.toArray(new TargetLocation[locations.size()]);
+	}
+	
+	public static void add(TargetLocation location) {
+		locations.add(location);
+	}
+		
+	private static void readLocations() {
+		// read saved locations list from disk, only if the file exists
+		IPath pluginStateLocation = TeamPlugin.getPlugin().getStateLocation().append(TARGET_LOCATIONS_FILE);
+		File f = pluginStateLocation.toFile();
+		if( f.exists() ) {
+			try {
+				DataInputStream dis = new DataInputStream(new FileInputStream(f));
+				readLocations(dis);
+			} catch (IOException e) {
+				TeamPlugin.log(new Status(Status.ERROR, TeamPlugin.ID, 0, Policy.bind("Config.error"), e)); //$NON-NLS-1$
+			}
+		}
+	}
+
+	private static void writeLocations() {
+		// save repositories to disk
+		IPath pluginStateLocation = TeamPlugin.getPlugin().getStateLocation();
+		File tempFile = pluginStateLocation.append(TARGET_LOCATIONS_FILE + ".tmp").toFile(); //$NON-NLS-1$
+		File stateFile = pluginStateLocation.append(TARGET_LOCATIONS_FILE).toFile();
+		try {
+			DataOutputStream dos = new DataOutputStream(new FileOutputStream(tempFile));
+			writeLocations(dos);
+			dos.close();
+			if (stateFile.exists())
+				stateFile.delete();
+			boolean renamed = tempFile.renameTo(stateFile);
+			if (!renamed) {
+				//todo: log the error
+			}
+		} catch (IOException e) {
+			TeamPlugin.log(new Status(Status.ERROR, TeamPlugin.ID, 0, Policy.bind("Config.error"), e)); //$NON-NLS-1$
+		}
+	}	
+
+	private static void readLocations(DataInputStream dis) throws IOException {
+		int repoCount = dis.readInt();
+		for (int i = 0; i < repoCount; i++) {
+			String type = dis.readUTF();
+			String locationData = dis.readUTF();
+			ITargetFactory factory = getFactory(type);
+			if(factory == null) {
+				//todo: log error
+				return;
+			}
+			TargetLocation loc = factory.decode(locationData);
+			locations.add(loc);
+		}
+	}
+	
+	private static void writeLocations(DataOutputStream dos) throws IOException {
+		dos.writeInt(locations.size());
+		Iterator iter = locations.iterator();
+		while(iter.hasNext()) {
+			TargetLocation loc = (TargetLocation) iter.next();
+			dos.writeUTF(loc.getType());
+			dos.writeUTF(loc.encode());
+		}
+	}
+			
+	private static ITargetFactory getTargetFactory(String id) {
+		TeamPlugin plugin = TeamPlugin.getPlugin();
+		if (plugin != null) {
+			IExtensionPoint extension = plugin.getDescriptor().getExtensionPoint(TeamPlugin.TARGETS_EXTENSION);
+			if (extension != null) {
+				IExtension[] extensions =  extension.getExtensions();
+				for (int i = 0; i < extensions.length; i++) {
+					IConfigurationElement[] configElements = extensions[i].getConfigurationElements();
+					for (int j = 0; j < configElements.length; j++) {
+						String extensionId = configElements[j].getAttribute("id"); //$NON-NLS-1$
+						if (extensionId != null && extensionId.equals(id)) {
+							try {
+								return (ITargetFactory) configElements[j].createExecutableExtension("class"); //$NON-NLS-1$
+							} catch (CoreException e) {
+								TeamPlugin.log(e.getStatus());
+								return null;
+							}
+						}
+					}
+				}
+			}		
+		}
+		return null;
+	}	
+
+
+}
diff --git a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/TargetProvider.java b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/TargetProvider.java
index 1a65577ab..f2004b022 100644
--- a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/TargetProvider.java
+++ b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/target/TargetProvider.java
@@ -1,9 +1,10 @@
-package org.eclipse.team.core;
+package org.eclipse.team.core.target;
 
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.QualifiedName;
+import org.eclipse.team.core.TeamException;
 
 public abstract class TargetProvider {