native-glass.mac.GlassAccessibleSelectionProvider.m Maven / Gradle / Ivy

Go to download
/*
 * Copyright (c) 2012, 2013, 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 "GlassAccessibleSelectionProvider.h"
#import "GlassMacros.h"

//#define VERBOSE
#ifndef VERBOSE
#define LOG(MSG, ...)
#else
#define LOG(MSG, ...) GLASS_LOG(MSG, ## __VA_ARGS__);
#endif

extern NSDictionary* attributeIds;
extern NSArray* eventIds ;
extern NSArray* roleIds ;
extern NSMutableArray* attributes;

static jmethodID midGetSelection=0;

@implementation GlassAccessibleSelectionProvider

// attributes

- (NSArray *)accessibilityAttributeNames {
    LOG("GlassAccessibleSelectionProvider:accessibilityAttributeNames");
    
    NSMutableArray *names = [[[super accessibilityAttributeNames] mutableCopy] autorelease];
    [names addObject:NSAccessibilityValueAttribute];
    return names;
}

- (id)accessibilityAttributeValue:(NSString *)attribute {
    LOG("GlassAccessibleSelectionProvider:accessibilityAttributeValue");
    LOG("  attribute: %s, self: %p", [attribute UTF8String], self);
    if ([attribute isEqualToString:NSAccessibilitySelectedChildrenAttribute]) {
        GET_MAIN_JENV;
        jlongArray selected = (*env)->CallObjectMethod(env, jBaseProvider, midGetSelection);
        GLASS_CHECK_EXCEPTION(env);
        if (selected == NULL) {
            LOG("  no selection, returning empty array");
            return [NSArray array];
        }
        jint size = (*env)->GetArrayLength(env, selected);
        GLASS_CHECK_EXCEPTION(env);
        if (size != 0) {
            GlassAccessibleBaseProvider* providers[size];
            jlong* selectedElements = (*env)->GetLongArrayElements(env, selected, JNI_FALSE);
            GLASS_CHECK_EXCEPTION(env);
            for (int i = 0; i < size; i++) {
                providers[i] =
                    (GlassAccessibleBaseProvider*)jlong_to_ptr(selectedElements[i]);
                LOG("  child: %p", providers[i]);
            }
            NSArray* macSelected = [[NSArray alloc] initWithObjects:providers count:size];
            (*env)->ReleaseLongArrayElements(env, selected, selectedElements, JNI_FALSE);
            GLASS_CHECK_EXCEPTION(env);
            return macSelected;
        } else {
            LOG("  no selected children, returning empty array");
            return [NSArray array];
        }
    } else {
        LOG("  attribute not implemented by subclass, calling super");
        return [super accessibilityAttributeValue:attribute];
    }
}

@end

/*
 * Class:     com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider
 * Method:    _initIDs
 * Signature: ()V
 */
JNIEXPORT void JNICALL
Java_com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider__1initIDs(
    JNIEnv *env, jclass cls)
{
    LOG("Java_com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider__1initIDs");
    midGetSelection  = (*env)->GetMethodID(env, cls, "getSelection", "()[J");
    GLASS_CHECK_EXCEPTION(env);
}

/*
 * Class:     com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider
 * Method:    _createAccessible
 * Signature: ()J
 */
JNIEXPORT jlong JNICALL
Java_com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider__1createAccessible(
    JNIEnv *env, jobject jBaseProvider)
{
    LOG("Java_com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider__1createAccessible");
    GlassAccessibleSelectionProvider *acc =
        [[GlassAccessibleSelectionProvider alloc] initWithEnv:env
                                                  baseProvider:jBaseProvider];
    LOG("  returning: %p:", acc);
    return ptr_to_jlong(acc);
}

/*
 * Class:     com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider
 * Method:    _destroyAccessible
 * Signature: (J)V
 */
JNIEXPORT void JNICALL
Java_com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider__1destroyAccessible(
    JNIEnv *env, jobject jBaseProvider, jlong acc)
{
    LOG("Java_com_sun_glass_ui_accessible_mac_MacAccessibleSelectionProvider__1destroyAccessible");
    GlassAccessibleSelectionProvider* accessible =
        (GlassAccessibleSelectionProvider*)jlong_to_ptr(acc);
    LOG("  accessible: %p", accessible);
    if (accessible) {
        [accessible dealloc];
    }
}