DrawApplication.java
/*
* @(#)DrawApplication.java
*
* Project: JHotdraw - a GUI framework for technical drawings
* http://www.jhotdraw.org
* http://jhotdraw.sourceforge.net
* Copyright: © by the original author(s) and all contributors
* License: Lesser GNU Public License (LGPL)
* http://www.opensource.org/licenses/lgpl-license.html
*/
package CH.ifa.draw.application;
import CH.ifa.draw.framework.*;
import CH.ifa.draw.standard.*;
import CH.ifa.draw.figures.*;
import CH.ifa.draw.util.*;
import javax.swing.*;
import javax.swing.event.EventListenerList;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
/**
* DrawApplication defines a standard presentation for
* standalone drawing editors. The presentation is
* customized in subclasses.
* The application is started as follows:
* <pre>
* public static void main(String[] args) {
* MayDrawApp window = new MyDrawApp();
* window.open();
* }
* </pre>
*
* @version <$CURRENT_VERSION$>
*/
public class DrawApplication
extends JFrame
implements DrawingEditor, PaletteListener, VersionRequester {
private Tool fTool;
private Iconkit fIconkit;
private JTextField fStatusLine;
private DrawingView fView;
private ToolButton fDefaultToolButton;
private ToolButton fSelectedToolButton;
private String fApplicationName;
private StorageFormatManager fStorageFormatManager;
private UndoManager myUndoManager;
protected static String fgUntitled = "untitled";
private final EventListenerList listenerList = new EventListenerList();
// the image resource path
private static final String fgDrawPath = "/CH/ifa/draw/";
public static final String IMAGES = fgDrawPath + "images/";
protected static int winCount = 0;
/**
* The index of the file menu in the menu bar.
*/
public static final int FILE_MENU = 0;
/**
* The index of the edit menu in the menu bar.
*/
public static final int EDIT_MENU = 1;
/**
* The index of the alignment menu in the menu bar.
*/
public static final int ALIGNMENT_MENU = 2;
/**
* The index of the attributes menu in the menu bar.
*/
public static final int ATTRIBUTES_MENU = 3;
/**
* Constructs a drawing window with a default title.
*/
public DrawApplication() {
this("JHotDraw");
}
/**
* Constructs a drawing window with the given title.
*/
public DrawApplication(String title) {
super(title);
setApplicationName(title);
winCount++;
}
/**
* Factory method which can be overriden by subclasses to
* create an instance of their type.
*
* @return newly created application
*/
protected DrawApplication createApplication() {
return new DrawApplication();
}
/**
* Open a new view for this application containing a
* view of the drawing of the currently activated window.
*/
public void newView() {
if (view() == null) {
return;
}
DrawApplication window = createApplication();
window.open(view());
if (view().drawing().getTitle() != null ) {
window.setDrawingTitle(view().drawing().getTitle() + " (View)");
}
else {
window.setDrawingTitle(getDefaultDrawingTitle() + " (View)");
}
}
/**
* Open a new window for this application containing the passed in drawing,
* or a new drawing if the passed in drawing is null.
*/
public void newWindow(Drawing initialDrawing) {
DrawApplication window = createApplication();
if (initialDrawing == null) {
window.open();
}
else {
window.open(createDrawingView(initialDrawing));
}
}
/**
* Opens a new window
*/
public void open() {
open(createInitialDrawingView());
}
/**
* Opens a new window with a drawing view.
*/
protected void open(DrawingView newDrawingView) {
getVersionControlStrategy().assertCompatibleVersion();
setUndoManager(new UndoManager());
fIconkit = new Iconkit(this);
getContentPane().setLayout(new BorderLayout());
// status line must be created before a tool is set
fStatusLine = createStatusLine();
getContentPane().add(fStatusLine, BorderLayout.SOUTH);
// create dummy tool until the default tool is activated during toolDone()
setTool(new NullTool(this), "");
setView(newDrawingView);
JComponent contents = createContents(view());
contents.setAlignmentX(LEFT_ALIGNMENT);
JToolBar tools = createToolPalette();
createTools(tools);
JPanel activePanel = new JPanel();
activePanel.setAlignmentX(LEFT_ALIGNMENT);
activePanel.setAlignmentY(TOP_ALIGNMENT);
activePanel.setLayout(new BorderLayout());
activePanel.add(tools, BorderLayout.NORTH);
activePanel.add(contents, BorderLayout.CENTER);
getContentPane().add(activePanel, BorderLayout.CENTER);
JMenuBar mb = new JMenuBar();
createMenus(mb);
setJMenuBar(mb);
Dimension d = defaultSize();
if (d.width > mb.getPreferredSize().width) {
setSize(d.width, d.height);
}
else {
setSize(mb.getPreferredSize().width, d.height);
}
addListeners();
setVisible(true);
fStorageFormatManager = createStorageFormatManager();
toolDone();
}
/**
* Registers the listeners for this window
*/
protected void addListeners() {
addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent event) {
exit();
}
}
);
}
/**
* Creates the standard menus. Clients override this
* method to add additional menus.
*/
protected void createMenus(JMenuBar mb) {
addMenuIfPossible(mb, createFileMenu());
addMenuIfPossible(mb, createEditMenu());
addMenuIfPossible(mb, createAlignmentMenu());
addMenuIfPossible(mb, createAttributesMenu());
addMenuIfPossible(mb, createDebugMenu());
}
protected void addMenuIfPossible(JMenuBar mb, JMenu newMenu) {
if (newMenu != null) {
mb.add(newMenu);
}
}
/**
* Creates the file menu. Clients override this
* method to add additional menu items.
*/
protected JMenu createFileMenu() {
CommandMenu menu = new CommandMenu("File");
Command cmd = new AbstractCommand("New", this, false) {
public void execute() {
promptNew();
}
};
menu.add(cmd, new MenuShortcut('n'));
cmd = new AbstractCommand("Open...", this, false) {
public void execute() {
promptOpen();
}
};
menu.add(cmd, new MenuShortcut('o'));
cmd = new AbstractCommand("Save As...", this, true) {
public void execute() {
promptSaveAs();
}
};
menu.add(cmd, new MenuShortcut('s'));
menu.addSeparator();
cmd = new AbstractCommand("Print...", this, true) {
public void execute() {
print();
}
};
menu.add(cmd, new MenuShortcut('p'));
menu.addSeparator();
cmd = new AbstractCommand("Exit", this, true) {
public void execute() {
exit();
}
};
menu.add(cmd);
return menu;
}
/**
* Creates the edit menu. Clients override this
* method to add additional menu items.
*/
protected JMenu createEditMenu() {
CommandMenu menu = new CommandMenu("Edit");
menu.add(new UndoableCommand(
new SelectAllCommand("Select All", this)), new MenuShortcut('a'));
menu.addSeparator();
menu.add(new UndoableCommand(
new CutCommand("Cut", this)), new MenuShortcut('x'));
menu.add(new CopyCommand("Copy", this), new MenuShortcut('c'));
menu.add(new UndoableCommand(
new PasteCommand("Paste", this)), new MenuShortcut('v'));
menu.addSeparator();
menu.add(new UndoableCommand(
new DuplicateCommand("Duplicate", this)), new MenuShortcut('d'));
menu.add(new UndoableCommand(new DeleteCommand("Delete", this)));
menu.addSeparator();
menu.add(new UndoableCommand(new GroupCommand("Group", this)));
menu.add(new UndoableCommand(new UngroupCommand("Ungroup", this)));
menu.addSeparator();
menu.add(new UndoableCommand(new SendToBackCommand("Send to Back", this)));
menu.add(new UndoableCommand(new BringToFrontCommand("Bring to Front", this)));
menu.addSeparator();
menu.add(new UndoCommand("Undo Command", this));
menu.add(new RedoCommand("Redo Command", this));
return menu;
}
/**
* Creates the alignment menu. Clients override this
* method to add additional menu items.
*/
protected JMenu createAlignmentMenu() {
CommandMenu menu = new CommandMenu("Align");
menu.addCheckItem(new ToggleGridCommand("Toggle Snap to Grid", this, new Point(4,4)));
menu.addSeparator();
menu.add(new UndoableCommand(
new AlignCommand(AlignCommand.Alignment.LEFTS, this)));
menu.add(new UndoableCommand(
new AlignCommand(AlignCommand.Alignment.CENTERS, this)));
menu.add(new UndoableCommand(
new AlignCommand(AlignCommand.Alignment.RIGHTS, this)));
menu.addSeparator();
menu.add(new UndoableCommand(
new AlignCommand(AlignCommand.Alignment.TOPS, this)));
menu.add(new UndoableCommand(
new AlignCommand(AlignCommand.Alignment.MIDDLES, this)));
menu.add(new UndoableCommand(
new AlignCommand(AlignCommand.Alignment.BOTTOMS, this)));
return menu;
}
/**
* Creates the debug menu. Clients override this
* method to add additional menu items.
*/
protected JMenu createDebugMenu() {
CommandMenu menu = new CommandMenu("Debug");
Command cmd = new AbstractCommand("Simple Update", this) {
public void executable() {
this.view().setDisplayUpdate(new SimpleUpdateStrategy());
}
};
menu.add(cmd);
cmd = new AbstractCommand("Buffered Update", this) {
public void executable() {
this.view().setDisplayUpdate(new BufferedUpdateStrategy());
}
};
menu.add(cmd);
return menu;
}
/**
* Creates the attributes menu and its submenus. Clients override this
* method to add additional menu items.
*/
protected JMenu createAttributesMenu() {
JMenu menu = new JMenu("Attributes");
menu.add(createColorMenu("Fill Color", "FillColor"));
menu.add(createColorMenu("Pen Color", "FrameColor"));
menu.add(createArrowMenu());
menu.addSeparator();
menu.add(createFontMenu());
menu.add(createFontSizeMenu());
menu.add(createFontStyleMenu());
menu.add(createColorMenu("Text Color", "TextColor"));
return menu;
}
/**
* Creates the color menu.
*/
protected JMenu createColorMenu(String title, String attribute) {
CommandMenu menu = new CommandMenu(title);
for (int i=0; i<ColorMap.size(); i++)
menu.add(
new UndoableCommand(
new ChangeAttributeCommand(
ColorMap.name(i),
attribute,
ColorMap.color(i),
this
)
)
);
return menu;
}
/**
* Creates the arrows menu.
*/
protected JMenu createArrowMenu() {
CommandMenu menu = new CommandMenu("Arrow");
menu.add(new UndoableCommand(
new ChangeAttributeCommand("none", "ArrowMode", new Integer(PolyLineFigure.ARROW_TIP_NONE), this)));
menu.add(new UndoableCommand(
new ChangeAttributeCommand("at Start", "ArrowMode", new Integer(PolyLineFigure.ARROW_TIP_START), this)));
menu.add(new UndoableCommand(
new ChangeAttributeCommand("at End", "ArrowMode", new Integer(PolyLineFigure.ARROW_TIP_END), this)));
menu.add(new UndoableCommand(
new ChangeAttributeCommand("at Both", "ArrowMode", new Integer(PolyLineFigure.ARROW_TIP_BOTH), this)));
return menu;
}
/**
* Creates the fonts menus. It installs all available fonts
* supported by the toolkit implementation.
*/
protected JMenu createFontMenu() {
CommandMenu menu = new CommandMenu("Font");
String fonts[] = Toolkit.getDefaultToolkit().getFontList();
for (int i = 0; i < fonts.length; i++) {
menu.add(new UndoableCommand(
new ChangeAttributeCommand(fonts[i], "FontName", fonts[i], this)));
}
return menu;
}
/**
* Creates the font style menu with entries (Plain, Italic, Bold).
*/
protected JMenu createFontStyleMenu() {
CommandMenu menu = new CommandMenu("Font Style");
menu.add(new UndoableCommand(
new ChangeAttributeCommand("Plain", "FontStyle", new Integer(Font.PLAIN), this)));
menu.add(new UndoableCommand(
new ChangeAttributeCommand("Italic","FontStyle", new Integer(Font.ITALIC), this)));
menu.add(new UndoableCommand(
new ChangeAttributeCommand("Bold", "FontStyle", new Integer(Font.BOLD), this)));
return menu;
}
/**
* Creates the font size menu.
*/
protected JMenu createFontSizeMenu() {
CommandMenu menu = new CommandMenu("Font Size");
int sizes[] = { 9, 10, 12, 14, 18, 24, 36, 48, 72 };
for (int i = 0; i < sizes.length; i++) {
menu.add(
new UndoableCommand(
new ChangeAttributeCommand(
Integer.toString(sizes[i]),
"FontSize",
new Integer(sizes[i]),
this
)
)
);
}
return menu;
}
/**
* Create a menu which allows the user to select a different look and feel at runtime.
*/
public JMenu createLookAndFeelMenu() {
CommandMenu menu = new CommandMenu("Look'n'Feel");
UIManager.LookAndFeelInfo[] lafs = UIManager.getInstalledLookAndFeels();
for (int i = 0; i < lafs.length; i++) {
final String lnfClassName = lafs[i].getClassName();
Command cmd = new AbstractCommand(lafs[i].getName(), this) {
public void execute() {
newLookAndFeel(lnfClassName);
}
};
menu.add(cmd);
}
return menu;
}
/**
* Creates the tool palette.
*/
protected JToolBar createToolPalette() {
JToolBar palette = new JToolBar();
palette.setBackground(Color.lightGray);
// use standard FlowLayout for JToolBar
// palette.setLayout(new PaletteLayout(2,new Point(2,2)));
return palette;
}
/**
* Creates the tools. By default only the selection tool is added.
* Override this method to add additional tools.
* Call the inherited method to include the selection tool.
* @param palette the palette where the tools are added.
*/
protected void createTools(JToolBar palette) {
Tool tool = createSelectionTool();
fDefaultToolButton = createToolButton(IMAGES+"SEL", "Selection Tool", tool);
palette.add(fDefaultToolButton);
}
/**
* Creates the selection tool used in this editor. Override to use
* a custom selection tool.
*/
protected Tool createSelectionTool() {
return new SelectionTool(this);
}
/**
* Creates a tool button with the given image, tool, and text
*/
protected ToolButton createToolButton(String iconName, String toolName, Tool tool) {
return new ToolButton(this, iconName, toolName, tool);
}
/**
* Creates the drawing view used in this application.
* You need to override this method to use a DrawingView
* subclass in your application. By default a standard
* DrawingView is returned.
*/
protected DrawingView createDrawingView() {
DrawingView createdDrawingView = createDrawingView(createDrawing());
createdDrawingView.drawing().setTitle(getDefaultDrawingTitle());
return createdDrawingView;
}
protected DrawingView createDrawingView(Drawing newDrawing) {
Dimension d = getDrawingViewSize();
DrawingView newDrawingView = new StandardDrawingView(this, d.width, d.height);
newDrawingView.setDrawing(newDrawing);
fireViewCreatedEvent(newDrawingView);
return newDrawingView;
}
/**
* Create the DrawingView that is active when the application is started.
* This initial DrawingView might be different from DrawingView created
* by the application, so subclasses can override this method to provide
* a special drawing view for application startup time, e.g. a NullDrawingView
* which does not display an internal frame in a multiple document interface
* (MDI) application.
*
* @return drawing view that is active at application startup time
*/
protected DrawingView createInitialDrawingView() {
return createDrawingView();
}
/**
* Override to define the dimensions of the drawing view.
*/
protected Dimension getDrawingViewSize() {
return new Dimension(800, 800);
}
/**
* Creates the drawing used in this application.
* You need to override this method to use a Drawing
* subclass in your application. By default a standard
* Drawing is returned.
*/
protected Drawing createDrawing() {
return new StandardDrawing();
}
/**
* Creates the contents component of the application
* frame. By default the DrawingView is returned in
* a JScrollPane.
*/
protected JComponent createContents(DrawingView view) {
if (view instanceof Component) {
JScrollPane sp = new JScrollPane((Component)view);
sp.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
sp.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
return sp;
}
else {
return new JPanel();
}
}
/**
* Factory method to create a StorageFormatManager for supported storage formats.
* Different applications might want to use different storage formats and can return
* their own format manager by overriding this method.
*/
public StorageFormatManager createStorageFormatManager() {
StorageFormatManager storageFormatManager = new StorageFormatManager();
storageFormatManager.setDefaultStorageFormat(new StandardStorageFormat());
storageFormatManager.addStorageFormat(storageFormatManager.getDefaultStorageFormat());
storageFormatManager.addStorageFormat(new SerializationStorageFormat());
return storageFormatManager;
}
/**
* Set the StorageFormatManager. The StorageFormatManager is used when storing and
* restoring Drawing from the file system.
* Should we through IllegalArguementException if it is?
*/
protected final void setStorageFormatManager(StorageFormatManager storageFormatManager) {
fStorageFormatManager = storageFormatManager;
}
/**
* Return the StorageFormatManager for this application.The StorageFormatManager is
* used when storing and restoring Drawing from the file system.
*/
public StorageFormatManager getStorageFormatManager() {
return fStorageFormatManager;
}
/**
* Gets the default size of the window.
*/
protected Dimension defaultSize() {
return new Dimension(600,450);
}
/**
* Creates the status line.
*/
protected JTextField createStatusLine() {
JTextField field = new JTextField("No Tool", 40);
field.setBackground(Color.white);
field.setEditable(false);
return field;
}
/**
* Handles a user selection in the palette.
* @see PaletteListener
*/
public void paletteUserSelected(PaletteButton button) {
ToolButton toolButton = (ToolButton) button;
setTool(toolButton.tool(), toolButton.name());
setSelected(toolButton);
}
/**
* Handles when the mouse enters or leaves a palette button.
* @see PaletteListener
*/
public void paletteUserOver(PaletteButton button, boolean inside) {
ToolButton toolButton = (ToolButton) button;
if (inside) {
showStatus(toolButton.name());
}
else {
showStatus(fSelectedToolButton.name());
}
}
/**
* Gets the current tool.
* @see DrawingEditor
*/
public Tool tool() {
return fTool;
}
/**
* Retrieve the active view from the window
* Gets the current drawing view.
* @see DrawingEditor
*/
public DrawingView view() {
return fView;
}
protected void setView(DrawingView newView) {
DrawingView oldView = fView;
fView = newView;
fireViewSelectionChangedEvent(oldView, view());
}
public DrawingView[] views() {
return new DrawingView[] { view() };
}
/**
* Sets the default tool of the editor.
* @see DrawingEditor
*/
public void toolDone() {
if (fDefaultToolButton != null) {
setTool(fDefaultToolButton.tool(), fDefaultToolButton.name());
setSelected(fDefaultToolButton);
}
}
/**
* Fired by a view when the figure seleciton changes. Since Commands and
* Tools are Actions and they are registered to hear these events, they will
* handle themselves. So selection sensitive menuitems will update their
* own states.
* @see DrawingEditor
*/
public void figureSelectionChanged(DrawingView view) {
JMenuBar mb = getJMenuBar();
CommandMenu editMenu = (CommandMenu)mb.getMenu(EDIT_MENU);
// make sure it does exist
if (editMenu != null) {
editMenu.checkEnabled();
}
CommandMenu alignmentMenu = (CommandMenu)mb.getMenu(ALIGNMENT_MENU);
// make sure it does exist
if (alignmentMenu != null) {
alignmentMenu.checkEnabled();
}
JMenu attributeMenu = mb.getMenu(ATTRIBUTES_MENU);
// make sure it does exist
if (attributeMenu != null) {
for (int i = 0; i < attributeMenu.getItemCount(); i++) {
JMenuItem currentMenu = attributeMenu.getItem(i);
if (currentMenu instanceof CommandMenu) {
((CommandMenu)currentMenu).checkEnabled();
}
}
}
}
/**
* Register to hear when the active view is changed. For Single document
* interface, this will happen when a new drawing is created.
*/
public void addViewChangeListener(ViewChangeListener vsl) {
listenerList.add(ViewChangeListener.class, vsl);
}
/**
* Remove listener
*/
public void removeViewChangeListener(ViewChangeListener vsl) {
listenerList.remove(ViewChangeListener.class, vsl);
}
/**
* An appropriate event is triggered and all registered observers
* are notified if the drawing view has been changed, e.g. by
* switching between several internal frames. This method is
* usually not needed in SDI environments.
*/
protected void fireViewSelectionChangedEvent(DrawingView oldView, DrawingView newView) {
final Object[] listeners = listenerList.getListenerList();
ViewChangeListener vsl = null;
for (int i = listeners.length-2; i>=0 ; i-=2) {
if (listeners[i] == ViewChangeListener.class) {
vsl = (ViewChangeListener)listeners[i+1];
vsl.viewSelectionChanged(oldView, newView);
}
}
}
protected void fireViewCreatedEvent(DrawingView view) {
final Object[] listeners = listenerList.getListenerList();
ViewChangeListener vsl = null;
for (int i = listeners.length-2; i>=0 ; i-=2) {
if (listeners[i] == ViewChangeListener.class) {
vsl = (ViewChangeListener)listeners[i+1];
vsl.viewCreated(view);
}
}
}
protected void fireViewDestroyingEvent(DrawingView view) {
final Object[] listeners = listenerList.getListenerList();
ViewChangeListener vsl = null;
for (int i = listeners.length-2; i>=0 ; i-=2) {
if (listeners[i] == ViewChangeListener.class) {
vsl = (ViewChangeListener)listeners[i+1];
vsl.viewDestroying( view );
}
}
}
/**
* Shows a status message.
* @see DrawingEditor
*/
public void showStatus(String string) {
fStatusLine.setText(string);
}
public void setTool(Tool t, String name) {
// SF bug-tracker id: #490665
// deactivate only those tools that have been activated before
if ((tool() != null) && (tool().isActive())) {
tool().deactivate();
}
fTool = t;
if (tool() != null) {
showStatus(name);
tool().activate();
}
}
private void setSelected(ToolButton button) {
if (fSelectedToolButton != null) {
fSelectedToolButton.reset();
}
fSelectedToolButton = button;
if (fSelectedToolButton != null) {
fSelectedToolButton.select();
}
}
/**
* Exits the application. You should never override this method
*/
public void exit() {
destroy();
setVisible(false); // hide the JFrame
dispose(); // tell windowing system to free resources
winCount--;
if (winCount == 0) {
System.exit(0);
}
}
/**
* Handles additional clean up operations. Override to destroy
* or release drawing editor resources.
*/
protected void destroy() {
}
/**
* Resets the drawing to a new empty drawing.
*/
public void promptNew() {
toolDone();
view().setDrawing(createDrawing());
view().drawing().setTitle(getDefaultDrawingTitle());
}
/**
* Shows a file dialog and opens a drawing.
*/
public void promptOpen() {
toolDone();
JFileChooser openDialog = createOpenFileChooser();
getStorageFormatManager().registerFileFilters(openDialog);
if (openDialog.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
StorageFormat foundFormat = getStorageFormatManager().findStorageFormat(openDialog.getFileFilter());
if (foundFormat != null) {
loadDrawing(foundFormat, openDialog.getSelectedFile().getAbsolutePath());
}
else {
showStatus("Not a valid file format: " + openDialog.getFileFilter().getDescription());
}
}
}
/**
* Shows a file dialog and saves drawing.
*/
public void promptSaveAs() {
toolDone();
JFileChooser saveDialog = createSaveFileChooser();
getStorageFormatManager().registerFileFilters(saveDialog);
if (saveDialog.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {
StorageFormat foundFormat = getStorageFormatManager().findStorageFormat(saveDialog.getFileFilter());
if (foundFormat != null) {
saveDrawing(foundFormat, saveDialog.getSelectedFile().getAbsolutePath());
}
else {
showStatus("Not a valid file format: " + saveDialog.getFileFilter().getDescription());
}
}
}
/**
* Create a file chooser for the open file dialog. Subclasses may override this
* method in order to customize the open file dialog.
*/
protected JFileChooser createOpenFileChooser() {
JFileChooser openDialog = new JFileChooser();
openDialog.setDialogTitle("Open File...");
return openDialog;
}
/**
* Create a file chooser for the save file dialog. Subclasses may override this
* method in order to customize the save file dialog.
*/
protected JFileChooser createSaveFileChooser() {
JFileChooser saveDialog = new JFileChooser();
saveDialog.setDialogTitle("Save File...");
return saveDialog;
}
/**
* Prints the drawing.
*/
public void print() {
tool().deactivate();
PrintJob printJob = getToolkit().getPrintJob(this, "Print Drawing", null);
if (printJob != null) {
Graphics pg = printJob.getGraphics();
if (pg != null) {
((StandardDrawingView)view()).printAll(pg);
pg.dispose(); // flush page
}
printJob.end();
}
tool().activate();
}
/**
* Save a Drawing in a file
*/
protected void saveDrawing(StorageFormat storeFormat, String file) {
// Need a better alert than this.
if(view() == null) {
return;
}
try {
String name = storeFormat.store(file, view().drawing());
view().drawing().setTitle(name);
setDrawingTitle(name);
}
catch (IOException e) {
showStatus(e.toString());
}
}
/**
* Load a Drawing from a file
*/
protected void loadDrawing(StorageFormat restoreFormat, String file) {
try {
Drawing restoredDrawing = restoreFormat.restore(file);
if (restoredDrawing != null) {
restoredDrawing.setTitle(file);
newWindow(restoredDrawing);
}
else {
showStatus("Unknown file type: could not open file '" + file + "'");
}
} catch (IOException e) {
showStatus("Error: " + e);
}
}
/**
* Switch to a new Look&Feel
*/
private void newLookAndFeel(String landf) {
try {
UIManager.setLookAndFeel(landf);
SwingUtilities.updateComponentTreeUI(this);
}
catch (Exception e) {
System.err.println(e);
}
}
/**
* Set the title of the currently selected drawing
*/
protected void setDrawingTitle(String drawingTitle) {
if (getDefaultDrawingTitle().equals(drawingTitle)) {
setTitle(getApplicationName());
}
else {
setTitle(getApplicationName() + " - " + drawingTitle);
}
}
/**
* Return the title of the currently selected drawing
*/
protected String getDrawingTitle() {
return view().drawing().getTitle();
}
/**
* Set the name of the application build from this skeleton application
*/
public void setApplicationName(String applicationName) {
fApplicationName = applicationName;
}
/**
* Return the name of the application build from this skeleton application
*/
public String getApplicationName() {
return fApplicationName;
}
protected void setUndoManager(UndoManager newUndoManager) {
myUndoManager = newUndoManager;
}
public UndoManager getUndoManager() {
return myUndoManager;
}
protected VersionControlStrategy getVersionControlStrategy() {
return new StandardVersionControlStrategy(this);
}
/**
* Subclasses should override this method to specify to which versions of
* JHotDraw they are compatible. A string array is returned so it is possible
* to specify several version numbers of JHotDraw to which the application
* is compatible with.
*
* @return all versions number of JHotDraw the application is compatible with.
*/
public String[] getRequiredVersions() {
String[] requiredVersions = new String[1];
// return the version of the package we are in
requiredVersions[0] = VersionManagement.getPackageVersion(DrawApplication.class.getPackage());
return requiredVersions;
}
protected String getDefaultDrawingTitle() {
return fgUntitled;
}
}