From 37e364b2c6cc7487a1c888d256a73e5337bb7189 Mon Sep 17 00:00:00 2001
From: Ash Wolf <ninji@wuffs.org>
Date: Wed, 14 Jun 2023 00:50:34 +0100
Subject: initial commit

---
 src/T2DLL/LAttachable.cpp | 86 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 src/T2DLL/LAttachable.cpp

(limited to 'src/T2DLL/LAttachable.cpp')

diff --git a/src/T2DLL/LAttachable.cpp b/src/T2DLL/LAttachable.cpp
new file mode 100644
index 0000000..9700c4d
--- /dev/null
+++ b/src/T2DLL/LAttachable.cpp
@@ -0,0 +1,86 @@
+#include "LArray.h"
+#include "LAttachable.h"
+#include "LAttachment.h"
+
+LAttachable::LAttachable() {
+	mAttachments = NULL;
+	SetDefaultAttachable(this);
+}
+
+LAttachable::LAttachable(const LAttachable& other) {
+	mAttachments = NULL;
+	SetDefaultAttachable(this);
+}
+
+/*virtual*/ LAttachable::~LAttachable() {
+	RemoveAllAttachments();
+}
+
+/*virtual*/ void LAttachable::AddAttachment(LAttachment* attachment, LAttachment* before, BOOL setAsOwner) {
+	if (!mAttachments)
+		mAttachments = new LArray;
+
+	if (!before) {
+		mAttachments->Add(&attachment);
+	} else {
+		int index = mAttachments->GetCount() + 1;
+		if (before) {
+			// bug? should this use &before?
+			index = mAttachments->FetchIndexOf(before);
+			if (index == 0)
+				index = mAttachments->GetCount() + 1;
+		}
+		mAttachments->InsertItemsAt(1, index, &attachment);
+	}
+
+	if (setAsOwner)
+		attachment->SetOwnerHost(this);
+}
+
+/*virtual*/ void LAttachable::RemoveAttachment(LAttachment* attachment) {
+	if (mAttachments) {
+		mAttachments->Remove(&attachment);
+		if (attachment->GetOwnerHost() == this)
+			attachment->SetOwnerHost(NULL);
+	}
+}
+
+/*virtual*/ void LAttachable::RemoveAllAttachments() {
+	if (mAttachments) {
+		LArrayIterator iter(*mAttachments);
+		LAttachment *attachment;
+
+		while (iter.Next(&attachment)) {
+			if (attachment->GetOwnerHost() == this) {
+				delete attachment;
+				iter.Reset();
+			}
+		}
+
+		delete mAttachments;
+		mAttachments = NULL;
+	}
+}
+
+/*virtual*/ BOOL LAttachable::ExecuteAttachments(unsigned int message, void* data) {
+	BOOL result = true;
+	if (mAttachments) {
+		LArrayIterator iter(*mAttachments);
+		LAttachment *attachment;
+
+		while (iter.Next(&attachment)) {
+			result = result & attachment->Execute(message, data);
+		}
+	}
+	return result;
+}
+
+/*static*/ LAttachable* LAttachable::sDefaultAttachable;
+
+/*static*/ LAttachable* LAttachable::GetDefaultAttachable() {
+	return sDefaultAttachable;
+}
+
+/*static*/ void LAttachable::SetDefaultAttachable(LAttachable* attachable) {
+	sDefaultAttachable = attachable;
+}
-- 
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