/*

 File: JavaMapping_AppDelegate.m

 Abstract: Delegate for handling events from JavaFrameView and NSTableView.

 Version: 1.0

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 install, modify or redistribute this Apple software.

 In consideration of your agreement to abide by the following terms, and

 subject to these terms, Apple grants you a personal, non-exclusive

 license, under Apple's copyrights in this original Apple software (the

"Apple Software"), to use, reproduce, modify and redistribute the Apple

 Software, with or without modifications, in source and/or binary forms;

 provided that if you redistribute the Apple Software in its entirety and

 without modifications, you must retain this notice and the following

 text and disclaimers in all such redistributions of the Apple Software. 

 Neither the name, trademarks, service marks or logos of Apple Inc. 

 may be used to endorse or promote products derived from the Apple

 Software without specific prior written permission from Apple.  Except

 as expressly stated in this notice, no other rights or licenses, express

 or implied, are granted by Apple herein, including but not limited to

 any patent rights that may be infringed by your derivative works or by

 other works in which the Apple Software may be incorporated.

 The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

 THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS

 FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND

 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.

 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL

 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

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 Copyright (C) 2007 Apple Inc. All Rights Reserved.

 */

#import "JavaMapping_AppDelegate.h"

#import <JavaVM/jni.h>

// Save JNI values to minimize callbacks.

static jclass sJavaMappingClass = nil;

@implementation JavaMapping_AppDelegate

#pragma mark -

#pragma mark Java-related methods 

#pragma mark

- (JNIEnv *)getJNIEnv

{

    static JNIEnv* sAppKitEnv = NULL;

    static JavaVM *sJVM = NULL;

    if (sAppKitEnv == NULL) {       

        if (sJVM == NULL) {

            JavaVM *createdJVMs;

            jint outCreatedVMCount;

            if (JNI_GetCreatedJavaVMs(&createdJVMs, sizeof(createdJVMs), &outCreatedVMCount) == 0) {

                if (outCreatedVMCount > 0) {

                    sJVM = createdJVMs;

                }

            }

        }

        // If we didn't find one, we're stuck.

        if (sJVM != NULL) {

            (*sJVM)->AttachCurrentThreadAsDaemon(sJVM, (void **)&sAppKitEnv, nil);

        }

    }

    return sAppKitEnv;

}

- (void)javaFrameView:(JavaFrameView *)sender didCreateJavaFrame:(jobject)javaFrame withJNIEnv:(JNIEnv *)inEnv;

{

    // Call our Java method to set up this Java frame. javaFrame is always an instance of java.awt.Frame.

    if (sJavaMappingClass == NULL) {

        sJavaMappingClass = (*inEnv)->FindClass(inEnv, "JavaMappingSupport");

    }

    if (sJavaMappingClass) {

        jmethodID setupFrameMethodID = (*inEnv)->GetStaticMethodID(inEnv, sJavaMappingClass, "setupFrame", "(Ljava/awt/Frame;)Ljava/lang/Object;");

        if (setupFrameMethodID) {

            jobject frameSupport = (*inEnv)->CallStaticObjectMethod(inEnv, sJavaMappingClass, setupFrameMethodID, javaFrame);

            if (frameSupport) {

                mapViewer = (*inEnv)->NewGlobalRef(inEnv, frameSupport);

            }

        }

    }

    if ((*inEnv)->ExceptionOccurred(inEnv)) {

        (*inEnv)->ExceptionDescribe(inEnv);

    }

}

- (void)javaFrameFinishedCreation:(NSNotification *)notification

{

    // **** Add code to turn on any UI elements

    // Turn on any UI elements that would interact with the Java frame.

    [zoomSliderVisible setEnabled:YES];

    [zoomButtonsVisible setEnabled:YES];

    [returnHomeButton setEnabled:YES];

    javaFrameReady = YES;

}

- (IBAction)toggleZoomSlider:(id)sender

{

    // Since we can't get this action until javaFrameFinishedCreation is called,

    // there's no need to check for the boolean state

    JNIEnv *theEnv = [self getJNIEnv];

    static jmethodID toggleZoomSliderMethod = NULL;

    if (theEnv) {

        if (!toggleZoomSliderMethod) {

            toggleZoomSliderMethod = (*theEnv)->GetMethodID(theEnv, sJavaMappingClass, "toggleZoomSlider", "(Z)V");

        }

        if (toggleZoomSliderMethod) {

            (*theEnv)->CallVoidMethod(theEnv, mapViewer, toggleZoomSliderMethod, [zoomSliderVisible state] == 1);

        }

    }

}

- (IBAction)toggleZoomButtons:(id)sender

{

    // Since we can't get this action until javaFrameFinishedCreation is called,

    // there's no need to check for the boolean state

    JNIEnv *theEnv = [self getJNIEnv];

    static jmethodID toggleZoomButtonsMethod = NULL;

    if (theEnv) {

        if (!toggleZoomButtonsMethod) {

            toggleZoomButtonsMethod = (*theEnv)->GetMethodID(theEnv, sJavaMappingClass, "toggleZoomButtons", "(Z)V");

        }

        if (toggleZoomButtonsMethod) {

            (*theEnv)->CallVoidMethod(theEnv, mapViewer, toggleZoomButtonsMethod, [zoomButtonsVisible state] == 1);

        }

    }

}

- (IBAction)returnHome:(id)sender

{

    // Since we can't get this action until javaFrameFinishedCreation is called,

    // there's no need to check for the boolean state

    JNIEnv *theEnv = [self getJNIEnv];

    static jmethodID returnHomeMethod = NULL;

    if (theEnv) {

        if (!returnHomeMethod) {

            returnHomeMethod = (*theEnv)->GetMethodID(theEnv, sJavaMappingClass, "returnHome", "()V");

        }

        if (returnHomeMethod) {

            (*theEnv)->CallVoidMethod(theEnv, mapViewer, returnHomeMethod);

        }

    }

}

- (void)tableViewSelectionDidChange:(NSNotification *)notification

{

    if (javaFrameReady) {

        JNIEnv *theEnv = [self getJNIEnv];

        static jmethodID setNewCenterPointMethod = NULL;

        if (theEnv) {

            if (!setNewCenterPointMethod) {

                setNewCenterPointMethod = (*theEnv)->GetMethodID(theEnv, sJavaMappingClass, "setNewCenterPoint", "(DD)V");

            }

            if (setNewCenterPointMethod) {

                int selectedRow = [dataTable selectedRow];

                double longitude = [dataSource longitudeForRow:selectedRow];

                double latitude = [dataSource latitudeForRow:selectedRow];

                (*theEnv)->CallVoidMethod(theEnv, mapViewer, setNewCenterPointMethod, latitude, longitude);

            }

        }

    }

}

#pragma mark -

#pragma mark Application setup methods 

#pragma mark

- (void)awakeFromNib

{   

    dataSource = [[GPSDataSource alloc] init];

    [dataTable setDataSource:dataSource];

    // **** Add creation of VM arguments here.

    NSString *myJarFile = [[NSBundle mainBundle] pathForResource:@"JavaMappingSupport" ofType:@"jar"];

    NSString *swingxwsJar = [[NSBundle mainBundle] pathForResource:@"swingx-ws" ofType:@"jar"];

    NSString *swingxJar = [[NSBundle mainBundle] pathForResource:@"swingx" ofType:@"jar"];

    NSString *fullClasspath = [NSString stringWithFormat:@"-Djava.class.path=%@:%@:%@", myJarFile, swingxwsJar, swingxJar];

    NSArray *vmArguments = [NSArray arrayWithObject:fullClasspath];

    [JavaFrameView setJavaStartupOptions:vmArguments];

    // **** Add Java object creation notification here.

    // **** We set up the delegate relationship to the JavaFrameView in the nib, so no need to do it here.

    // Register for Java object creation notification.

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(javaFrameFinishedCreation:) name:JavaFrameViewDidCreateJavaFrame object:javaView];

}

/**

    Implementation of dealloc, to release the retained variables.

 */

- (void) dealloc {

    [dataSource release];

    [super dealloc];

}

@end