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package javax.print;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.HeadlessException;
import java.awt.Rectangle;
import java.awt.Window;
import javax.print.attribute.Attribute;
import javax.print.attribute.AttributeSet;
import javax.print.attribute.standard.DialogOwner;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.Destination;
import javax.print.attribute.standard.Fidelity;
import sun.print.ServiceDialog;
import sun.print.SunAlternateMedia;
This class is a collection of UI convenience methods which provide a
graphical user dialog for browsing print services looked up through the Java
Print Service API.
The dialogs follow a standard pattern of acting as a continue/cancel option
for a user as well as allowing the user to select the print service to use
and specify choices such as paper size and number of copies.
The dialogs are designed to work with pluggable print services though the
public APIs of those print services.
If a print service provides any vendor extensions these may be made accessible to the user through a vendor supplied tab panel Component. Such a vendor extension is encouraged to use Swing! and to support its accessibility APIs. The vendor extensions should return the settings as part of the AttributeSet. Applications which want to preserve the user settings should use those settings to specify the print job. Note that this class is not referenced by any other part of the Java Print Service and may not be included in profiles which cannot depend on the presence of the AWT packages.
/**
* This class is a collection of UI convenience methods which provide a
* graphical user dialog for browsing print services looked up through the Java
* Print Service API.
* <p>
* The dialogs follow a standard pattern of acting as a continue/cancel option
* for a user as well as allowing the user to select the print service to use
* and specify choices such as paper size and number of copies.
* <p>
* The dialogs are designed to work with pluggable print services though the
* public APIs of those print services.
* <p>
* If a print service provides any vendor extensions these may be made
* accessible to the user through a vendor supplied tab panel {@code Component}.
* Such a vendor extension is encouraged to use Swing! and to support its
* accessibility APIs. The vendor extensions should return the settings as part
* of the {@code AttributeSet}. Applications which want to preserve the user
* settings should use those settings to specify the print job. Note that this
* class is not referenced by any other part of the Java Print Service and may
* not be included in profiles which cannot depend on the presence of the AWT
* packages.
*/
public class ServiceUI {
Presents a dialog to the user for selecting a print service (printer). It
is displayed at the location specified by the application and is modal.
If the specification is invalid or would make the dialog not visible it
will be displayed at a location determined by the implementation. The
dialog blocks its calling thread and is application modal.
The dialog may include a tab panel with custom UI lazily obtained from the PrintService's ServiceUIFactory when the PrintService is browsed. The dialog will attempt to locate a MAIN_UIROLE first as a JComponent, then as a Panel. If there is no ServiceUIFactory or no matching role the custom tab will be empty or not visible.
The dialog returns the print service selected by the user if the user OK's the dialog and null if the user cancels the dialog.
An application must pass in an array of print services to browse. The array must be non-null and non-empty. Typically an application will pass in only PrintServices capable of printing a particular document flavor.
An application may pass in a PrintService to be initially displayed. A non-null parameter must be included in the array of browsable services. If this parameter is null a service is chosen by the implementation.
An application may optionally pass in the flavor to be printed. If this is non-null choices presented to the user can be better validated against those supported by the services. An application must pass in a PrintRequestAttributeSet for returning user choices. On calling the PrintRequestAttributeSet may be empty, or may contain application-specified values.
These are used to set the initial settings for the initially displayed
print service. Values which are not supported by the print service are
ignored. As the user browses print services, attributes and values are
copied to the new display. If a user browses a print service which does
not support a particular attribute-value, the default for that service is
used as the new value to be copied.
If the user cancels the dialog, the returned attributes will not reflect
any changes made by the user.
A typical basic usage of this method may be:
PrintService[] services = PrintServiceLookup.lookupPrintServices(
DocFlavor.INPUT_STREAM.JPEG, null);
PrintRequestAttributeSet attributes = new HashPrintRequestAttributeSet();
if (services.length > 0) {
PrintService service = ServiceUI.printDialog(null, 50, 50,
services, services[0],
null,
attributes);
if (service != null) {
... print ...
}
}
Params: - gc – used to select screen,
null means primary or default screen - x – location of dialog including border in screen coordinates relative to the origin of
gc - y – location of dialog including border in screen coordinates relative to the origin of
gc - services – to be browsable, must be
non-null - defaultService – initial
PrintService to display - flavor – the flavor to be printed, or
null - attributes – on input is the initial application supplied preferences. This cannot be
null but may be empty. On output the attributes reflect changes made by the user.
Throws: - HeadlessException – if
GraphicsEnvironment.isHeadless() returns true - IllegalArgumentException – if services is
null or empty, or attributes is null, or the initial PrintService is not in the list of browsable services
Returns: print service selected by the user, or null if the user cancelled the dialog
/**
* Presents a dialog to the user for selecting a print service (printer). It
* is displayed at the location specified by the application and is modal.
* If the specification is invalid or would make the dialog not visible it
* will be displayed at a location determined by the implementation. The
* dialog blocks its calling thread and is application modal.
* <p>
* The dialog may include a tab panel with custom UI lazily obtained from
* the {@code PrintService}'s {@code ServiceUIFactory} when the
* {@code PrintService} is browsed. The dialog will attempt to locate a
* {@code MAIN_UIROLE} first as a {@code JComponent}, then as a
* {@code Panel}. If there is no {@code ServiceUIFactory} or no matching
* role the custom tab will be empty or not visible.
* <p>
* The dialog returns the print service selected by the user if the user
* OK's the dialog and {@code null} if the user cancels the dialog.
* <p>
* An application must pass in an array of print services to browse. The
* array must be {@code non-null} and non-empty. Typically an application
* will pass in only {@code PrintServices} capable of printing a particular
* document flavor.
* <p>
* An application may pass in a {@code PrintService} to be initially
* displayed. A {@code non-null} parameter must be included in the array of
* browsable services. If this parameter is {@code null} a service is chosen
* by the implementation.
* <p>
* An application may optionally pass in the flavor to be printed. If this
* is {@code non-null} choices presented to the user can be better validated
* against those supported by the services. An application must pass in a
* {@code PrintRequestAttributeSet} for returning user choices. On calling
* the {@code PrintRequestAttributeSet} may be empty, or may contain
* application-specified values.
* <p>
* These are used to set the initial settings for the initially displayed
* print service. Values which are not supported by the print service are
* ignored. As the user browses print services, attributes and values are
* copied to the new display. If a user browses a print service which does
* not support a particular attribute-value, the default for that service is
* used as the new value to be copied.
* <p>
* If the user cancels the dialog, the returned attributes will not reflect
* any changes made by the user.
* <p>
* A typical basic usage of this method may be:
* <pre>{@code
* PrintService[] services = PrintServiceLookup.lookupPrintServices(
* DocFlavor.INPUT_STREAM.JPEG, null);
* PrintRequestAttributeSet attributes = new HashPrintRequestAttributeSet();
* if (services.length > 0) {
* PrintService service = ServiceUI.printDialog(null, 50, 50,
* services, services[0],
* null,
* attributes);
* if (service != null) {
* ... print ...
* }
* }
* }</pre>
*
* @param gc used to select screen, {@code null} means primary or default
* screen
* @param x location of dialog including border in screen coordinates
* relative to the origin of {@code gc}
* @param y location of dialog including border in screen coordinates
* relative to the origin of {@code gc}
* @param services to be browsable, must be {@code non-null}
* @param defaultService initial {@code PrintService} to display
* @param flavor the flavor to be printed, or {@code null}
* @param attributes on input is the initial application supplied
* preferences. This cannot be {@code null} but may be empty. On
* output the attributes reflect changes made by the user.
* @return print service selected by the user, or {@code null} if the user
* cancelled the dialog
* @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
* returns {@code true}
* @throws IllegalArgumentException if services is {@code null} or empty, or
* attributes is {@code null}, or the initial {@code PrintService}
* is not in the list of browsable services
*/
@SuppressWarnings("deprecation")
public static PrintService printDialog(GraphicsConfiguration gc,
int x, int y,
PrintService[] services,
PrintService defaultService,
DocFlavor flavor,
PrintRequestAttributeSet attributes)
throws HeadlessException
{
int defaultIndex = -1;
if (GraphicsEnvironment.isHeadless()) {
throw new HeadlessException();
} else if ((services == null) || (services.length == 0)) {
throw new IllegalArgumentException("services must be non-null " +
"and non-empty");
} else if (attributes == null) {
throw new IllegalArgumentException("attributes must be non-null");
}
if (defaultService != null) {
for (int i = 0; i < services.length; i++) {
if (services[i].equals(defaultService)) {
defaultIndex = i;
break;
}
}
if (defaultIndex < 0) {
throw new IllegalArgumentException("services must contain " +
"defaultService");
}
} else {
defaultIndex = 0;
}
DialogOwner dlgOwner = (DialogOwner)attributes.get(DialogOwner.class);
Window owner = (dlgOwner != null) ? dlgOwner.getOwner() : null;
boolean setOnTop = (dlgOwner != null) && (owner == null);
Rectangle gcBounds = (gc == null) ? GraphicsEnvironment.
getLocalGraphicsEnvironment().getDefaultScreenDevice().
getDefaultConfiguration().getBounds() : gc.getBounds();
x += gcBounds.x;
y += gcBounds.y;
ServiceDialog dialog = new ServiceDialog(gc,
x,
y,
services, defaultIndex,
flavor, attributes,
owner);
if (setOnTop) {
try {
dialog.setAlwaysOnTop(true);
} catch (SecurityException e) {
}
}
Rectangle dlgBounds = dialog.getBounds();
// if portion of dialog is not within the gc boundary
if (!gcBounds.contains(dlgBounds)) {
// check if dialog exceed window bounds at left or bottom
// Then position the dialog by moving it by the amount it exceeds
// the window bounds
// If it results in dialog moving beyond the window bounds at
// top/left then position it at window top/left
if (dlgBounds.x + dlgBounds.width > gcBounds.x + gcBounds.width) {
if ((gcBounds.x + gcBounds.width - dlgBounds.width) > gcBounds.x) {
x = (gcBounds.x + gcBounds.width) - dlgBounds.width;
} else {
x = gcBounds.x;
}
}
if (dlgBounds.y + dlgBounds.height > gcBounds.y + gcBounds.height) {
if ((gcBounds.y + gcBounds.height - dlgBounds.height) > gcBounds.y) {
y = (gcBounds.y + gcBounds.height) - dlgBounds.height;
} else {
y = gcBounds.y;
}
}
dialog.setBounds(x, y, dlgBounds.width, dlgBounds.height);
}
dialog.show();
if (dialog.getStatus() == ServiceDialog.APPROVE) {
PrintRequestAttributeSet newas = dialog.getAttributes();
Class<?> dstCategory = Destination.class;
Class<?> amCategory = SunAlternateMedia.class;
Class<?> fdCategory = Fidelity.class;
if (attributes.containsKey(dstCategory) &&
!newas.containsKey(dstCategory))
{
attributes.remove(dstCategory);
}
if (attributes.containsKey(amCategory) &&
!newas.containsKey(amCategory))
{
attributes.remove(amCategory);
}
attributes.addAll(newas);
Fidelity fd = (Fidelity)attributes.get(fdCategory);
if (fd != null) {
if (fd == Fidelity.FIDELITY_TRUE) {
removeUnsupportedAttributes(dialog.getPrintService(),
flavor, attributes);
}
}
}
return dialog.getPrintService();
}
/**
* POSSIBLE FUTURE API: This method may be used down the road if we
* decide to allow developers to explicitly display a "page setup" dialog.
* Currently we use that functionality internally for the AWT print model.
*/
/*
public static void pageDialog(GraphicsConfiguration gc,
int x, int y,
PrintService service,
DocFlavor flavor,
PrintRequestAttributeSet attributes)
throws HeadlessException
{
if (GraphicsEnvironment.isHeadless()) {
throw new HeadlessException();
} else if (service == null) {
throw new IllegalArgumentException("service must be non-null");
} else if (attributes == null) {
throw new IllegalArgumentException("attributes must be non-null");
}
ServiceDialog dialog = new ServiceDialog(gc, x, y, service,
flavor, attributes);
dialog.show();
if (dialog.getStatus() == ServiceDialog.APPROVE) {
PrintRequestAttributeSet newas = dialog.getAttributes();
Class amCategory = SunAlternateMedia.class;
if (attributes.containsKey(amCategory) &&
!newas.containsKey(amCategory))
{
attributes.remove(amCategory);
}
attributes.addAll(newas.values());
}
dialog.getOwner().dispose();
}
*/
Removes any attributes from the given AttributeSet that are unsupported by the given PrintService/DocFlavor combination. /**
* Removes any attributes from the given {@code AttributeSet} that are
* unsupported by the given {@code PrintService/DocFlavor} combination.
*/
private static void removeUnsupportedAttributes(PrintService ps,
DocFlavor flavor,
AttributeSet aset)
{
AttributeSet asUnsupported = ps.getUnsupportedAttributes(flavor,
aset);
if (asUnsupported != null) {
Attribute[] usAttrs = asUnsupported.toArray();
for (int i=0; i<usAttrs.length; i++) {
Class<? extends Attribute> category = usAttrs[i].getCategory();
if (ps.isAttributeCategorySupported(category)) {
Attribute attr =
(Attribute)ps.getDefaultAttributeValue(category);
if (attr != null) {
aset.add(attr);
} else {
aset.remove(category);
}
} else {
aset.remove(category);
}
}
}
}
}