/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <quartz/utils.h>
#include "a11ycomponentwrapper.h"
#include "a11yrolehelper.h"
#include <com/sun/star/accessibility/AccessibleRole.hpp>

using namespace ::com::sun::star::accessibility;
using namespace ::com::sun::star::awt;
using namespace ::com::sun::star::uno;

// Wrapper for XAccessibleComponent and XAccessibleExtendedComponent

@implementation AquaA11yComponentWrapper : NSObject

+(id)sizeAttributeForElement:(AquaA11yWrapper *)wrapper {
    Size size = [ wrapper accessibleComponent ] -> getSize();
    NSSize nsSize = NSMakeSize ( static_cast<float>(size.Width), static_cast<float>(size.Height) );
    return [ NSValue valueWithSize: nsSize ];
}

// TODO: should be merged with AquaSalFrame::VCLToCocoa... to a general helper method
+(id)positionAttributeForElement:(AquaA11yWrapper *)wrapper {
    // VCL coordinates are in upper-left-notation, Cocoa likes it the Cartesian way (lower-left)
    NSRect screenRect = [ [ NSScreen mainScreen ] frame ];
    Size size = [ wrapper accessibleComponent ] -> getSize();
    Point location = [ wrapper accessibleComponent ] -> getLocationOnScreen();
    NSPoint nsPoint = NSMakePoint ( static_cast<float>(location.X), static_cast<float>( screenRect.size.height - size.Height - location.Y ) );
    return [ NSValue valueWithPoint: nsPoint ];
}

+(id)descriptionAttributeForElement:(AquaA11yWrapper *)wrapper {
    if ( [ wrapper accessibleExtendedComponent ] ) {
        // Related tdf#158914: explicitly call autorelease selector
        // CreateNSString() is not a getter. It expects the caller to
        // release the returned string.
        return [ CreateNSString ( [ wrapper accessibleExtendedComponent ] -> getToolTipText() ) autorelease ];
    } else {
        return nil;
    }
}

+(void)addAttributeNamesTo:(NSMutableArray *)attributeNames {
    NSAutoreleasePool * pool = [ [ NSAutoreleasePool alloc ] init ];
    [ attributeNames addObjectsFromArray: [ NSArray arrayWithObjects: 
            NSAccessibilitySizeAttribute, 
            NSAccessibilityPositionAttribute, 
            NSAccessibilityFocusedAttribute, 
            NSAccessibilityEnabledAttribute, 
            nil ] ];
    [ pool release ];
}

+(BOOL)isAttributeSettable:(NSString *)attribute forElement:(AquaA11yWrapper *)wrapper {
    bool isSettable = false;
    NSAutoreleasePool * pool = [ [ NSAutoreleasePool alloc ] init ];
    if ( [ attribute isEqualToString: NSAccessibilityFocusedAttribute ] 
      && ! [ [ AquaA11yRoleHelper getNativeRoleFrom: [ wrapper accessibleContext ] ] isEqualToString: NSAccessibilityScrollBarRole ] 
      && ! [ [ AquaA11yRoleHelper getNativeRoleFrom: [ wrapper accessibleContext ] ] isEqualToString: NSAccessibilityStaticTextRole ] ) {
        isSettable = true;
    }
    [ pool release ];
    return isSettable;
}

+(void)setFocusedAttributeForElement:(AquaA11yWrapper *)wrapper to:(id)value {
    if ( [ value boolValue ] == YES ) {
        if ( [ wrapper accessibleContext ] -> getAccessibleRole() == AccessibleRole::COMBO_BOX ) {
            // special treatment for comboboxes: find the corresponding PANEL and set focus to it
            Reference < XAccessible > rxParent = [ wrapper accessibleContext ] -> getAccessibleParent();
            if ( rxParent.is() ) {
                Reference < XAccessibleContext > rxContext = rxParent->getAccessibleContext();
                if ( rxContext.is() && rxContext -> getAccessibleRole() == AccessibleRole::PANEL ) {
                    Reference < XAccessibleComponent > rxComponent( rxParent -> getAccessibleContext(), UNO_QUERY );
                    if ( rxComponent.is() ) {
                        rxComponent -> grabFocus();
                    }
                }
            }
        } else {
            [ wrapper accessibleComponent ] -> grabFocus();
        }
    }
}

@end

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