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iOS Accessibility: Create UIAccessibilityReadingContent protocol-conforming classes dynamically for text elements

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ed 2021-09-22 16:24:47 +01:00
parent a6db2ef4ff
commit 2abf68d866
1 changed files with 28 additions and 19 deletions
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47
modules/juce_gui_basics/native/accessibility/juce_ios_Accessibility.mm
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@ -176,16 +176,21 @@ private:
class AccessibilityElement : public AccessibleObjCClass<UIAccessibilityElement>
{
public:
enum class Type { defaultElement, textElement };
static Holder create (AccessibilityHandler& handler)
{
static AccessibilityElement cls;
Holder element ([cls.createInstance() initWithAccessibilityContainer: (id) handler.getComponent().getWindowHandle()]);
static AccessibilityElement cls { Type::defaultElement };
static AccessibilityElement textCls { Type::textElement };
id instance = (hasEditableText (handler) ? textCls : cls).createInstance();
Holder element ([instance initWithAccessibilityContainer: (id) handler.getComponent().getWindowHandle()]);
object_setInstanceVariable (element.get(), "handler", &handler);
return element;
}
private:
AccessibilityElement()
AccessibilityElement (Type elementType)
{
addMethod (@selector (isAccessibilityElement), getIsAccessibilityElement, "c@:");
addMethod (@selector (accessibilityContainer), getAccessibilityContainer, "@@:");
@ -205,24 +210,28 @@ private:
addMethod (@selector (accessibilityIncrement), accessibilityPerformIncrement, "c@:");
addMethod (@selector (accessibilityDecrement), accessibilityPerformDecrement, "c@:");
addMethod (@selector (accessibilityLineNumberForPoint:), getAccessibilityLineNumberForPoint, "i@:", @encode (CGPoint));
addMethod (@selector (accessibilityContentForLineNumber:), getAccessibilityContentForLineNumber, "@@:i");
addMethod (@selector (accessibilityFrameForLineNumber:), getAccessibilityFrameForLineNumber, @encode (CGRect), "@:i");
addMethod (@selector (accessibilityPageContent), getAccessibilityPageContent, "@@:");
addMethod (@selector (accessibilityDataTableCellElementForRow:column:), getAccessibilityDataTableCellElementForRowColumn, "@@:ii");
addMethod (@selector (accessibilityRowCount), getAccessibilityRowCount, "i@:");
addMethod (@selector (accessibilityColumnCount), getAccessibilityColumnCount, "i@:");
addMethod (@selector (accessibilityRowRange), getAccessibilityRowIndexRange, @encode (NSRange), "@:");
addMethod (@selector (accessibilityColumnRange), getAccessibilityColumnIndexRange, @encode (NSRange), "@:");
addProtocol (@protocol (UIAccessibilityReadingContent));
if (elementType == Type::textElement)
{
addMethod (@selector (accessibilityLineNumberForPoint:), getAccessibilityLineNumberForPoint, "i@:", @encode (CGPoint));
addMethod (@selector (accessibilityContentForLineNumber:), getAccessibilityContentForLineNumber, "@@:i");
addMethod (@selector (accessibilityFrameForLineNumber:), getAccessibilityFrameForLineNumber, @encode (CGRect), "@:i");
addMethod (@selector (accessibilityPageContent), getAccessibilityPageContent, "@@:");
addProtocol (@protocol (UIAccessibilityReadingContent));
}
addIvar<UIAccessibilityElement*> ("container");
registerClass();
}
private:
//==============================================================================
static UIAccessibilityElement* getContainer (id self)
{
@ -377,6 +386,15 @@ private:
return NO;
}
static id getAccessibilityDataTableCellElementForRowColumn (id self, SEL, NSUInteger row, NSUInteger column)
{
if (auto* tableInterface = getTableInterface (self))
if (auto* cellHandler = tableInterface->getCellHandler ((int) row, (int) column))
return (id) cellHandler->getNativeImplementation();
return nil;
}
static NSInteger getAccessibilityLineNumberForPoint (id self, SEL, CGPoint point)
{
if (auto* handler = getHandler (self))
@ -433,15 +451,6 @@ private:
return nil;
}
static id getAccessibilityDataTableCellElementForRowColumn (id self, SEL, NSUInteger row, NSUInteger column)
{
if (auto* tableInterface = getTableInterface (self))
if (auto* cellHandler = tableInterface->getCellHandler ((int) row, (int) column))
return (id) cellHandler->getNativeImplementation();
return nil;
}
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AccessibilityElement)
};