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/* clang-format off */
/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* clang-format on */
/* 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/. */
#import "mozActionElements.h"
#import "MacUtils.h"
#include "Accessible-inl.h"
#include "DocAccessible.h"
#include "XULTabAccessible.h"
#include "HTMLFormControlAccessible.h"
#include "nsDeckFrame.h"
#include "nsObjCExceptions.h"
using namespace mozilla::a11y;
enum CheckboxValue {
// these constants correspond to the values in the OS
kUnchecked = 0,
kChecked = 1,
kMixed = 2
};
@implementation mozButtonAccessible
- (NSNumber*)moxHasPopup {
return @([self stateWithMask:states::HASPOPUP] != 0);
}
- (NSString*)moxPopupValue {
if ([self stateWithMask:states::HASPOPUP] != 0) {
return utils::GetAccAttr(self, "haspopup");
}
return nil;
}
@end
@implementation mozPopupButtonAccessible
- (NSString*)moxTitle {
// Popup buttons don't have titles.
return @"";
}
- (BOOL)moxBlockSelector:(SEL)selector {
if (selector == @selector(moxHasPopup)) {
return YES;
}
return [super moxBlockSelector:selector];
}
- (NSArray*)moxChildren {
if ([self stateWithMask:states::EXPANDED] == 0) {
// If the popup button is collapsed don't return its children.
return @[];
}
return [super moxChildren];
}
- (void)stateChanged:(uint64_t)state isEnabled:(BOOL)enabled {
[super stateChanged:state isEnabled:enabled];
if (state == states::EXPANDED) {
// If the EXPANDED state is updated, fire AXMenu events on the
// popups child which is the actual menu.
if (mozAccessible* popup = (mozAccessible*)[self childAt:0]) {
[popup moxPostNotification:(enabled ? @"AXMenuOpened" : @"AXMenuClosed")];
}
}
}
@end
@implementation mozRadioButtonAccessible
- (NSArray*)moxLinkedUIElements {
return [[self getRelationsByType:RelationType::MEMBER_OF]
arrayByAddingObjectsFromArray:[super moxLinkedUIElements]];
}
@end
@implementation mozCheckboxAccessible
- (int)isChecked {
// check if we're checked or in a mixed state
uint64_t state =
[self stateWithMask:(states::CHECKED | states::PRESSED | states::MIXED)];
if (state & (states::CHECKED | states::PRESSED)) {
return kChecked;
}
if (state & states::MIXED) {
return kMixed;
}
return kUnchecked;
}
- (id)moxValue {
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
return [NSNumber numberWithInt:[self isChecked]];
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (void)stateChanged:(uint64_t)state isEnabled:(BOOL)enabled {
[super stateChanged:state isEnabled:enabled];
if (state & (states::CHECKED | states::PRESSED | states::MIXED)) {
[self moxPostNotification:NSAccessibilityValueChangedNotification];
}
}
@end
@implementation mozPaneAccessible
- (NSArray*)moxChildren {
if (!mGeckoAccessible.AsAccessible()) return nil;
nsDeckFrame* deckFrame =
do_QueryFrame(mGeckoAccessible.AsAccessible()->GetFrame());
nsIFrame* selectedFrame = deckFrame ? deckFrame->GetSelectedBox() : nullptr;
Accessible* selectedAcc = nullptr;
if (selectedFrame) {
nsINode* node = selectedFrame->GetContent();
selectedAcc =
mGeckoAccessible.AsAccessible()->Document()->GetAccessible(node);
}
if (selectedAcc) {
mozAccessible* curNative = GetNativeFromGeckoAccessible(selectedAcc);
if (curNative)
return
[NSArray arrayWithObjects:GetObjectOrRepresentedView(curNative), nil];
}
return nil;
}
@end
@implementation mozIncrementableAccessible
- (void)moxPerformIncrement {
[self changeValueBySteps:1];
}
- (void)moxPerformDecrement {
[self changeValueBySteps:-1];
}
- (void)handleAccessibleEvent:(uint32_t)eventType {
switch (eventType) {
case nsIAccessibleEvent::EVENT_TEXT_VALUE_CHANGE:
case nsIAccessibleEvent::EVENT_VALUE_CHANGE:
[self moxPostNotification:NSAccessibilityValueChangedNotification];
break;
default:
[super handleAccessibleEvent:eventType];
break;
}
}
/*
* Updates the accessible's current value by (factor * step).
* If incrementing factor should be positive, if decrementing
* factor should be negative.
*/
- (void)changeValueBySteps:(int)factor {
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
if (Accessible* acc = mGeckoAccessible.AsAccessible()) {
double newVal = acc->CurValue() + (acc->Step() * factor);
double min = acc->MinValue();
double max = acc->MaxValue();
if ((IsNaN(min) || newVal >= min) && (IsNaN(max) || newVal <= max)) {
acc->SetCurValue(newVal);
}
} else if (ProxyAccessible* proxy = mGeckoAccessible.AsProxy()) {
double newVal = proxy->CurValue() + (proxy->Step() * factor);
double min = proxy->MinValue();
double max = proxy->MaxValue();
// Because min and max are not required attributes, we first check
// if the value is undefined. If this check fails,
// the value is defined, and we we verify our new value falls
// within the bound (inclusive).
if ((IsNaN(min) || newVal >= min) && (IsNaN(max) || newVal <= max)) {
proxy->SetCurValue(newVal);
}
}
NS_OBJC_END_TRY_ABORT_BLOCK;
}
@end
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