Java tutorial
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See the License for the * specific language governing permissions and limitations * under the License. ****************************************************************/ package org.apache.cayenne.modeler.action; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.KeyEvent; import java.io.File; import java.net.URL; import javax.swing.JOptionPane; import javax.swing.KeyStroke; import org.apache.cayenne.modeler.Application; import org.apache.cayenne.modeler.CayenneModelerController; import org.apache.cayenne.modeler.dialog.ErrorDebugDialog; import org.apache.cayenne.project.Project; import org.apache.cayenne.project.ProjectLoader; import org.apache.cayenne.project.upgrade.ProjectUpgrader; import org.apache.cayenne.project.upgrade.UpgradeHandler; import org.apache.cayenne.project.upgrade.UpgradeMetaData; import org.apache.cayenne.project.upgrade.UpgradeType; import org.apache.cayenne.resource.Resource; import org.apache.cayenne.resource.URLResource; import org.apache.cayenne.swing.control.FileMenuItem; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class OpenProjectAction extends ProjectAction { private static Log logObj = LogFactory.getLog(OpenProjectAction.class); protected ProjectOpener fileChooser; public static String getActionName() { return "Open Project"; } public OpenProjectAction(Application application) { super(getActionName(), application); this.fileChooser = new ProjectOpener(); } public String getIconName() { return "icon-open.gif"; } public KeyStroke getAcceleratorKey() { return KeyStroke.getKeyStroke(KeyEvent.VK_O, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()); } public void performAction(ActionEvent e) { // Save and close (if needed) currently open project. if (getProjectController() != null && !checkSaveOnClose()) { return; } File f = null; if (e.getSource() instanceof FileMenuItem) { FileMenuItem menu = (FileMenuItem) e.getSource(); f = menu.getFile(); } else if (e.getSource() instanceof File) { f = (File) e.getSource(); } if (f == null) { try { // Get the project file name (always cayenne.xml) f = fileChooser.openProjectFile(Application.getFrame()); } catch (Exception ex) { logObj.warn("Error loading project file.", ex); } } if (f != null) { // by now if the project is unsaved, this has been a user choice... if (getProjectController() != null && !closeProject(false)) { return; } openProject(f); } application.getUndoManager().discardAllEdits(); } /** Opens specified project file. File must already exist. */ public void openProject(File file) { try { if (!file.exists()) { JOptionPane.showMessageDialog(Application.getFrame(), "Can't open project - file \"" + file.getPath() + "\" does not exist", "Can't Open Project", JOptionPane.OK_OPTION); return; } CayenneModelerController controller = Application.getInstance().getFrameController(); controller.addToLastProjListAction(file.getAbsolutePath()); URL url = file.toURL(); Resource rootSource = new URLResource(url); ProjectUpgrader upgrader = getApplication().getInjector().getInstance(ProjectUpgrader.class); UpgradeHandler handler = upgrader.getUpgradeHandler(rootSource); UpgradeMetaData md = handler.getUpgradeMetaData(); if (UpgradeType.DOWNGRADE_NEEDED == md.getUpgradeType()) { JOptionPane.showMessageDialog(Application.getFrame(), "Can't open project - it was created using a newer version of the Modeler", "Can't Open Project", JOptionPane.OK_OPTION); closeProject(false); } else if (UpgradeType.INTERMEDIATE_UPGRADE_NEEDED == md.getUpgradeType()) { JOptionPane.showMessageDialog(Application.getFrame(), // TODO: andrus 05/02/2010 - this message shows intermediate // version of the project XML, not the Modeler code // version that // can be used for upgrade "Can't upgrade project. Open the project in the Modeler v." + md.getIntermediateUpgradeVersion() + " to do an intermediate upgrade before you can upgrade to v." + md.getSupportedVersion(), "Can't Upgrade Project", JOptionPane.OK_OPTION); closeProject(false); } else if (UpgradeType.UPGRADE_NEEDED == md.getUpgradeType()) { if (processUpgrades(md)) { // perform upgrade logObj.info("Will upgrade project " + url.getPath()); Resource upgraded = handler.performUpgrade(); if (upgraded != null) { Project project = openProjectResourse(upgraded, controller); getProjectController().getFileChangeTracker().pauseWatching(); getProjectController().getFileChangeTracker().reconfigure(); // if project file name changed // need upgrade all if (!file.getAbsolutePath().equals(project.getConfigurationResource().getURL().getPath())) { controller.changePathInLastProjListAction(file.getAbsolutePath(), project.getConfigurationResource().getURL().getPath()); } } else { closeProject(false); } } } else { openProjectResourse(rootSource, controller); } } catch (Exception ex) { logObj.warn("Error loading project file.", ex); ErrorDebugDialog.guiWarning(ex, "Error loading project"); } } private Project openProjectResourse(Resource resource, CayenneModelerController controller) { Project project = getApplication().getInjector().getInstance(ProjectLoader.class).loadProject(resource); controller.projectOpenedAction(project); return project; } protected boolean processUpgrades(UpgradeMetaData md) { // need an upgrade int returnCode = JOptionPane.showConfirmDialog(Application.getFrame(), "Project needs an upgrade to a newer version. Upgrade?", "Upgrade Needed", JOptionPane.YES_NO_OPTION); if (returnCode == JOptionPane.NO_OPTION) { return false; } return true; } }