eclipse plugin: Add context menu for importing maps

utils/java/eclipse_plugin/plugin.xml

@@ -45,8 +45,8 @@
             nameFilter="*maps*"
             objectClass="org.eclipse.core.resources.IFolder">
          <action
-               class="action.ImportMap"
-               enablesFor="+"
+               class="wesnoth_eclipse_plugin.action.ImportMap"
+               enablesFor="1"
                icon="icons/wesnoth_editor-icon.png"
                id="actions.importmap"
                label="Import map"

utils/java/eclipse_plugin/src/wesnoth_eclipse_plugin/Activator.java

@@ -1,6 +1,7 @@
 package wesnoth_eclipse_plugin;
 
 import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.swt.widgets.Shell;
 import org.eclipse.ui.plugin.AbstractUIPlugin;
 import org.osgi.framework.BundleContext;
 
@@ -25,6 +26,7 @@ public class Activator extends AbstractUIPlugin {
 	 * (non-Javadoc)
 	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
 	 */
+	@Override
 	public void start(BundleContext context) throws Exception {
 		super.start(context);
 		plugin = this;
@@ -35,6 +37,7 @@ public class Activator extends AbstractUIPlugin {
 	 * (non-Javadoc)
 	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
 	 */
+	@Override
 	public void stop(BundleContext context) throws Exception {
 		plugin = null;
 		super.stop(context);
@@ -59,4 +62,13 @@ public class Activator extends AbstractUIPlugin {
 	public static ImageDescriptor getImageDescriptor(String path) {
 		return imageDescriptorFromPlugin(PLUGIN_ID, path);
 	}
+
+	/**
+	 * Returns the plugin's shell
+	 * @return
+	 */
+	public static Shell getShell()
+	{
+		return plugin.getWorkbench().getDisplay().getActiveShell();
+	}
 }

utils/java/eclipse_plugin/src/wesnoth_eclipse_plugin/action/ImportMap.java

@@ -0,0 +1,89 @@
+package wesnoth_eclipse_plugin.action;
+
+import java.io.File;
+
+import org.eclipse.core.resources.IContainer;
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.FileDialog;
+import org.eclipse.swt.widgets.MessageBox;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.IObjectActionDelegate;
+import org.eclipse.ui.IWorkbenchPart;
+
+import wesnoth_eclipse_plugin.Activator;
+import wesnoth_eclipse_plugin.utils.FileUtils;
+
+public class ImportMap implements IObjectActionDelegate
+{
+	private IProject selectedProject_;
+	private IContainer mapsFolder_;
+
+	public ImportMap()
+	{
+	}
+
+	@Override
+	public void run(IAction action)
+	{
+		Shell shell = Activator.getShell();
+		FileDialog mapDialog = new FileDialog(shell,SWT.OPEN);
+		mapDialog.setText("Import wesnoth map");
+		mapDialog.setFilterExtensions(new String[] {"*.map" });
+		String file = mapDialog.open();
+		if (file != null && selectedProject_ != null)
+		{
+			try
+			{
+				File source = new File(file);
+				File target = new File(mapsFolder_.getLocation().toOSString() +
+						Path.SEPARATOR + source.getName());
+
+				if (target.exists())
+				{
+					MessageBox confirmBox =new MessageBox(shell,
+							SWT.ICON_QUESTION | SWT.YES | SWT.NO);
+					confirmBox.setMessage("There is already an existing map with the same name. Overwrite?");
+					if (confirmBox.open() == SWT.NO)
+						return;
+				}
+
+				FileUtils.copyTo(source, target);
+				mapsFolder_.refreshLocal(IResource.DEPTH_INFINITE, null);
+			}
+			catch (Exception e)
+			{
+				e.printStackTrace();
+			}
+		}
+	}
+
+	@Override
+	public void selectionChanged(IAction action, ISelection selection){
+		if (selection instanceof IStructuredSelection)
+		{
+			Object selection2 = ((IStructuredSelection)selection).getFirstElement();
+			if (selection2 instanceof IResource) {
+				mapsFolder_ = (IContainer)selection2;
+
+				// get the project
+				while(selection2 instanceof IContainer &&
+						((IContainer)selection2).getParent() != null &&
+						!(selection2 instanceof IProject))
+					selection2 = ((IContainer) selection2).getParent();
+
+				if (selection2 instanceof IProject)
+					selectedProject_ = (IProject)selection2;
+			}
+		}
+	}
+
+	@Override
+	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
+	}
+}

utils/java/eclipse_plugin/src/wesnoth_eclipse_plugin/utils/FileUtils.java

@@ -0,0 +1,37 @@
+/**
+ * @author Timotei Dolean
+ */
+package wesnoth_eclipse_plugin.utils;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public class FileUtils
+{
+	/**
+	 * Copies a file from source to target
+	 * @param source
+	 * @param target
+	 * @throws Exception
+	 */
+	public static void copyTo(File source, File target) throws Exception
+	{
+		if (source == null || target == null)
+			return;
+
+		InputStream in = new FileInputStream(source);
+		OutputStream out = new FileOutputStream(target);
+
+		// Transfer bytes from in to out
+		byte[] buf = new byte[1024];
+		int len;
+		while ((len = in.read(buf)) > 0) {
+			out.write(buf, 0, len);
+		}
+		in.close();
+		out.close();
+	}
+}