javafx.print.PageRange Maven / Gradle / Ivy
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* by Oracle in the LICENSE file that accompanied this code.
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package javafx.print;
import java.util.Arrays;
import javafx.beans.NamedArg;
import javafx.beans.property.IntegerProperty;
import javafx.beans.property.ReadOnlyIntegerProperty;
import javafx.beans.property.ReadOnlyIntegerWrapper;
/**
* A {@code PageRange} is used to select or constrain the job print
* stream pages to print.
* Page numbering starts from 1 to correspond to user expectations.
* The start page must be greater than zero and less than or
* equal to the endpage.
* If start and end are equal, the range refers to a single page.
* Values that exceed the number of job pages are harmlessly ignored
* during printing.
* @since JavaFX 8.0
*/
public final class PageRange {
private ReadOnlyIntegerWrapper startPage, endPage;
/**
* Create a new PageRange with the specified start and end page numbers.
* @param startPage the first page in the range.
* @param endPage the last page in the range.
* @throws IllegalArgumentException if the page range is not valid
*/
public PageRange(@NamedArg("startPage") int startPage, @NamedArg("endPage") int endPage) {
if (startPage <= 0 || startPage > endPage) {
throw new IllegalArgumentException("Invalid range : " +
startPage + " -> " + endPage);
}
startPageImplProperty().set(startPage);
endPageImplProperty().set(endPage);
}
/**
* IntegerProperty representing the starting
* page number of the range. See {@link #setStartPage setStartPage()}
* for more information.
*/
private ReadOnlyIntegerWrapper startPageImplProperty() {
if (startPage == null) {
startPage =
new ReadOnlyIntegerWrapper(PageRange.this, "startPage", 1) {
@Override
public void set(int value) {
if ((value <= 0) ||
(endPage != null && value < endPage.get())) {
return;
}
super.set(value);
}
};
}
return startPage;
}
/**
* IntegerProperty representing the starting
* page number of the range. See {@link getStartPage getStartPage()}
* for more information.
* @return the starting page number of the range
*/
public ReadOnlyIntegerProperty startPageProperty() {
return startPageImplProperty().getReadOnlyProperty();
}
/**
* @return the starting page of the range.
*/
public int getStartPage() {
return startPageProperty().get();
}
private ReadOnlyIntegerWrapper endPageImplProperty() {
if (endPage == null) {
endPage =
new ReadOnlyIntegerWrapper(PageRange.this, "endPage", 9999) {
@Override
public void set(int value) {
if ((value <= 0) ||
(startPage != null && value < startPage.get())) {
return;
}
super.set(value);
}
};
}
return endPage;
}
/**
* IntegerProperty representing the ending
* page number of the range. See {@link #getEndPage getEndPage()}
* for more information.
* @return the ending page number of the range
*/
public ReadOnlyIntegerProperty endPageProperty() {
return endPageImplProperty().getReadOnlyProperty();
}
/**
* @return the ending page of the range.
*/
public int getEndPage() {
return endPageProperty().get();
}
}