Java example source code file (PrintModel.m)

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Java - Java tags/keywords

awt_assert_not_appkit_thread, bool, cfrelease, cfretain, jnfrunloop, nsokbutton, nspagelayout, nsprintoperation, nsprintpanel, printerview, printmodel

The PrintModel.m Java example source code

/*
 * Copyright (c) 2011, 2012, 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.
 */


#import "PrintModel.h"

#import <JavaNativeFoundation/JavaNativeFoundation.h>

#import "PrinterView.h"
#import "ThreadUtilities.h"

@implementation PrintModel

- (id)initWithPrintInfo:(NSPrintInfo*)printInfo {
    self = [super init];
    if (self) {
        fPrintInfo = [printInfo retain];
    }

    return self;
}

- (void)dealloc {
    [fPrintInfo release];
    fPrintInfo = nil;

    [super dealloc];
}
//- (void)finalize { [super finalize]; }

- (BOOL)runPageSetup {
    __block BOOL fResult = NO;

    [JNFRunLoop performOnMainThreadWaiting:YES withBlock:^(){
        NSPageLayout* pageLayout = [NSPageLayout pageLayout];
        fResult = ([pageLayout runModalWithPrintInfo:fPrintInfo] == NSOKButton);
    }];

    return fResult;
}

- (BOOL)runJobSetup {
    __block BOOL fResult = NO;

    [JNFRunLoop performOnMainThreadWaiting:YES withBlock:^(){
        NSPrintPanel* printPanel = [NSPrintPanel printPanel];
        fResult = ([printPanel runModalWithPrintInfo:fPrintInfo] == NSOKButton);
    }];

    return fResult;
}

- (BOOL)runPrintLoopWithView:(NSView*)printerView waitUntilDone:(BOOL)wait withEnv:(JNIEnv *)env
{
AWT_ASSERT_NOT_APPKIT_THREAD;

    BOOL fResult = NO;

    // <rdar://problem/4310184> Because people like to put up modal dialogs during print operations,
    // we have to run the print operation on a non-AppKit thread or else we get a deadlock and errors
    // the AppKit team believes it's OK for us to call runOperation from non-AppKit threads,
    // as long as we don't show any panels, and we don't touch the NSPrintInfo or the NSView from other threads.
    if (wait) {
        fResult = [self safePrintLoop:printerView withEnv:env];
    } else {
        // Retain these so they don't go away while we're in Java
        CFRetain(self); // GC
        if (printerView) CFRetain(printerView); // GC

        static JNF_CLASS_CACHE(jc_CPrinterJob, "sun/lwawt/macosx/CPrinterJob");
        static JNF_STATIC_MEMBER_CACHE(jm_detachPrintLoop, jc_CPrinterJob, "detachPrintLoop", "(JJ)V");
        JNFCallStaticVoidMethod(env, jm_detachPrintLoop, ptr_to_jlong(self), ptr_to_jlong(printerView)); // AWT_THREADING Safe (known object)
    }

    return fResult;
}

- (BOOL) safePrintLoop:(id)arg withEnv:(JNIEnv *)env
{
AWT_ASSERT_NOT_APPKIT_THREAD;

    PrinterView* printerView = (PrinterView*)arg;
    BOOL fResult;
    @try {
        NSPrintOperation* printLoop = [NSPrintOperation printOperationWithView:printerView printInfo:fPrintInfo];
        [printLoop setShowPanels:NO];    //+++gdb Problem: This will avoid progress bars...
        //[printLoop setCanSpawnSeparateThread:YES]; //+++gdb Need to check this...

        fResult = [printLoop runOperation];
    } @finally {
        // Tell CPrinterJob that things are done.
        [printerView complete:env];
    }
    return fResult;
}

@end

/*
 * Class:     sun_lwawt_macosx_CPrinterJob
 * Method:    _safePrintLoop
 * Signature: (JJ)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPrinterJob__1safePrintLoop
(JNIEnv *env, jclass clz, jlong target, jlong view)
{
JNF_COCOA_ENTER(env);

    PrintModel *model = (PrintModel *)jlong_to_ptr(target);
    PrinterView *arg = (PrinterView *)jlong_to_ptr(view);

    [model safePrintLoop:arg withEnv:env];

    // These are to match the retains in runPrintLoopWithView:
    if (model) CFRelease(model); // GC
    if (arg) CFRelease(arg); // GC

JNF_COCOA_EXIT(env);
}