/*
* Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.print;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.HeadlessException;
import java.awt.Dialog;
import java.awt.Frame;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Window;
import java.awt.KeyboardFocusManager;
import javax.print.attribute.Attribute;
import javax.print.attribute.AttributeSet;
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>
* <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 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.
*/
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
- y – location of dialog including border in screen coordinates
- 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 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.
* <p>
* 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.
* <p>
* 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.
* <p>
* 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.
* <p>
* 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.
* <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.
*
* 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>
* <p>
* @param gc used to select screen. null means primary or default screen.
* @param x location of dialog including border in screen coordinates
* @param y location of dialog including border in screen coordinates
* @param services to be browsable, must be non-null.
* @param defaultService - initial PrintService to display.
* @param flavor - the flavor to be printed, or null.
* @param 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.
* @return print service selected by the user, or null if the user
* cancelled the dialog.
* @throws HeadlessException if GraphicsEnvironment.isHeadless()
* returns true.
* @throws IllegalArgumentException if services is null or empty,
* or attributes is null, or the initial PrintService is not in the
* list of browsable services.
*/
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;
}
// For now we set owner to null. In the future, it may be passed
// as an argument.
Window owner = null;
Rectangle gcBounds = (gc == null) ? GraphicsEnvironment.
getLocalGraphicsEnvironment().getDefaultScreenDevice().
getDefaultConfiguration().getBounds() : gc.getBounds();
ServiceDialog dialog;
if (owner instanceof Frame) {
dialog = new ServiceDialog(gc,
x + gcBounds.x,
y + gcBounds.y,
services, defaultIndex,
flavor, attributes,
(Frame)owner);
} else {
dialog = new ServiceDialog(gc,
x + gcBounds.x,
y + gcBounds.y,
services, defaultIndex,
flavor, attributes,
(Dialog)owner);
}
Rectangle dlgBounds = dialog.getBounds();
// get union of all GC bounds
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
for (int j=0; j<gs.length; j++) {
gcBounds =
gcBounds.union(gs[j].getDefaultConfiguration().getBounds());
}
// if portion of dialog is not within the gc boundary
if (!gcBounds.contains(dlgBounds)) {
// put in the center relative to parent frame/dialog
dialog.setLocationRelativeTo(owner);
}
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 AttributeSet that are
* unsupported by the given 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 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);
}
}
}
}
}