From cde09b91e08a48b2a0e0022c4147f0bb2e1fb8b7 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sun, 8 Jun 2025 09:52:52 +0100
Subject: Add HasChildren::replaceChildren()

---
 .../zwobble/mammoth/internal/documents/Document.java  |  8 +++++++-
 .../mammoth/internal/documents/HasChildren.java       |  3 ++-
 .../zwobble/mammoth/internal/documents/Hyperlink.java |  7 ++++++-
 .../zwobble/mammoth/internal/documents/Paragraph.java |  8 +++++++-
 .../org/zwobble/mammoth/internal/documents/Run.java   | 19 ++++++++++++++++++-
 .../org/zwobble/mammoth/internal/documents/Table.java |  7 ++++++-
 .../zwobble/mammoth/internal/documents/TableCell.java |  7 ++++++-
 .../zwobble/mammoth/internal/documents/TableRow.java  |  7 ++++++-
 8 files changed, 58 insertions(+), 8 deletions(-)

(limited to 'src/main')

diff --git a/src/main/java/org/zwobble/mammoth/internal/documents/Document.java b/src/main/java/org/zwobble/mammoth/internal/documents/Document.java
index 5adc50d..b1807d5 100644
--- a/src/main/java/org/zwobble/mammoth/internal/documents/Document.java
+++ b/src/main/java/org/zwobble/mammoth/internal/documents/Document.java
@@ -2,7 +2,7 @@ package org.zwobble.mammoth.internal.documents;
 
 import java.util.List;
 
-public class Document implements HasChildren {
+public class Document implements HasChildren<Document> {
     private final List<DocumentElement> children;
     private final Notes notes;
     private final List<Comment> comments;
@@ -13,10 +13,16 @@ public class Document implements HasChildren {
         this.comments = comments;
     }
 
+    @Override
     public List<DocumentElement> getChildren() {
         return children;
     }
 
+    @Override
+    public Document replaceChildren(List<DocumentElement> newChildren) {
+        return new Document(newChildren, this.notes, this.comments);
+    }
+
     public Notes getNotes() {
         return notes;
     }
diff --git a/src/main/java/org/zwobble/mammoth/internal/documents/HasChildren.java b/src/main/java/org/zwobble/mammoth/internal/documents/HasChildren.java
index 2a5280e..11789b0 100644
--- a/src/main/java/org/zwobble/mammoth/internal/documents/HasChildren.java
+++ b/src/main/java/org/zwobble/mammoth/internal/documents/HasChildren.java
@@ -2,6 +2,7 @@ package org.zwobble.mammoth.internal.documents;
 
 import java.util.List;
 
-public interface HasChildren {
+public interface HasChildren<T> {
     List<DocumentElement> getChildren();
+    T replaceChildren(List<DocumentElement> newChildren);
 }
diff --git a/src/main/java/org/zwobble/mammoth/internal/documents/Hyperlink.java b/src/main/java/org/zwobble/mammoth/internal/documents/Hyperlink.java
index c3fe794..bf86ffe 100644
--- a/src/main/java/org/zwobble/mammoth/internal/documents/Hyperlink.java
+++ b/src/main/java/org/zwobble/mammoth/internal/documents/Hyperlink.java
@@ -3,7 +3,7 @@ package org.zwobble.mammoth.internal.documents;
 import java.util.List;
 import java.util.Optional;
 
-public class Hyperlink implements DocumentElement, HasChildren {
+public class Hyperlink implements DocumentElement, HasChildren<Hyperlink> {
     public static Hyperlink href(String href, Optional<String> targetFrame, List<DocumentElement> children) {
         return new Hyperlink(Optional.of(href), Optional.empty(), targetFrame, children);
     }
@@ -41,6 +41,11 @@ public class Hyperlink implements DocumentElement, HasChildren {
         return children;
     }
 
+    @Override
+    public Hyperlink replaceChildren(List<DocumentElement> newChildren) {
+        return new Hyperlink(this.href, this.anchor, this.targetFrame, newChildren);
+    }
+
     @Override
     public <T, U> T accept(DocumentElementVisitor<T, U> visitor, U context) {
         return visitor.visit(this, context);
diff --git a/src/main/java/org/zwobble/mammoth/internal/documents/Paragraph.java b/src/main/java/org/zwobble/mammoth/internal/documents/Paragraph.java
index 58c3453..c9859b6 100644
--- a/src/main/java/org/zwobble/mammoth/internal/documents/Paragraph.java
+++ b/src/main/java/org/zwobble/mammoth/internal/documents/Paragraph.java
@@ -3,7 +3,7 @@ package org.zwobble.mammoth.internal.documents;
 import java.util.List;
 import java.util.Optional;
 
-public class Paragraph implements DocumentElement, HasChildren {
+public class Paragraph implements DocumentElement, HasChildren<Paragraph> {
     private final Optional<Style> style;
     private final Optional<NumberingLevel> numbering;
     private final ParagraphIndent indent;
@@ -33,10 +33,16 @@ public class Paragraph implements DocumentElement, HasChildren {
         return indent;
     }
 
+    @Override
     public List<DocumentElement> getChildren() {
         return children;
     }
 
+    @Override
+    public Paragraph replaceChildren(List<DocumentElement> newChildren) {
+        return new Paragraph(this.style, this.numbering, this.indent, newChildren);
+    }
+
     @Override
     public <T, U> T accept(DocumentElementVisitor<T, U> visitor, U context) {
         return visitor.visit(this, context);
diff --git a/src/main/java/org/zwobble/mammoth/internal/documents/Run.java b/src/main/java/org/zwobble/mammoth/internal/documents/Run.java
index cb8bf1f..d1de84a 100644
--- a/src/main/java/org/zwobble/mammoth/internal/documents/Run.java
+++ b/src/main/java/org/zwobble/mammoth/internal/documents/Run.java
@@ -3,7 +3,7 @@ package org.zwobble.mammoth.internal.documents;
 import java.util.List;
 import java.util.Optional;
 
-public class Run implements DocumentElement, HasChildren {
+public class Run implements DocumentElement, HasChildren<Run> {
     private final Optional<String> highlight;
     private final boolean isBold;
     private final boolean isItalic;
@@ -75,10 +75,27 @@ public class Run implements DocumentElement, HasChildren {
         return style;
     }
 
+    @Override
     public List<DocumentElement> getChildren() {
         return children;
     }
 
+    @Override
+    public Run replaceChildren(List<DocumentElement> newChildren) {
+        return new Run(
+            this.highlight,
+            this.isBold,
+            this.isItalic,
+            this.isUnderline,
+            this.isStrikethrough,
+            this.isAllCaps,
+            this.isSmallCaps,
+            this.verticalAlignment,
+            this.style,
+            newChildren
+        );
+    }
+
     @Override
     public <T, U> T accept(DocumentElementVisitor<T, U> visitor, U context) {
         return visitor.visit(this, context);
diff --git a/src/main/java/org/zwobble/mammoth/internal/documents/Table.java b/src/main/java/org/zwobble/mammoth/internal/documents/Table.java
index c58808c..6f1751a 100644
--- a/src/main/java/org/zwobble/mammoth/internal/documents/Table.java
+++ b/src/main/java/org/zwobble/mammoth/internal/documents/Table.java
@@ -3,7 +3,7 @@ package org.zwobble.mammoth.internal.documents;
 import java.util.List;
 import java.util.Optional;
 
-public class Table implements DocumentElement, HasChildren {
+public class Table implements DocumentElement, HasChildren<Table> {
     private final Optional<Style> style;
     private final List<DocumentElement> children;
 
@@ -21,6 +21,11 @@ public class Table implements DocumentElement, HasChildren {
         return children;
     }
 
+    @Override
+    public Table replaceChildren(List<DocumentElement> newChildren) {
+        return new Table(this.style, newChildren);
+    }
+
     @Override
     public <T, U> T accept(DocumentElementVisitor<T, U> visitor, U context) {
         return visitor.visit(this, context);
diff --git a/src/main/java/org/zwobble/mammoth/internal/documents/TableCell.java b/src/main/java/org/zwobble/mammoth/internal/documents/TableCell.java
index 2837725..14900aa 100644
--- a/src/main/java/org/zwobble/mammoth/internal/documents/TableCell.java
+++ b/src/main/java/org/zwobble/mammoth/internal/documents/TableCell.java
@@ -2,7 +2,7 @@ package org.zwobble.mammoth.internal.documents;
 
 import java.util.List;
 
-public class TableCell implements DocumentElement, HasChildren {
+public class TableCell implements DocumentElement, HasChildren<TableCell> {
     private final int rowspan;
     private final int colspan;
     private final List<DocumentElement> children;
@@ -26,6 +26,11 @@ public class TableCell implements DocumentElement, HasChildren {
         return children;
     }
 
+    @Override
+    public TableCell replaceChildren(List<DocumentElement> newChildren) {
+        return new TableCell(this.rowspan, this.colspan, newChildren);
+    }
+
     @Override
     public <T, U> T accept(DocumentElementVisitor<T, U> visitor, U context) {
         return visitor.visit(this, context);
diff --git a/src/main/java/org/zwobble/mammoth/internal/documents/TableRow.java b/src/main/java/org/zwobble/mammoth/internal/documents/TableRow.java
index 0b5721d..00edc5f 100644
--- a/src/main/java/org/zwobble/mammoth/internal/documents/TableRow.java
+++ b/src/main/java/org/zwobble/mammoth/internal/documents/TableRow.java
@@ -2,7 +2,7 @@ package org.zwobble.mammoth.internal.documents;
 
 import java.util.List;
 
-public class TableRow implements DocumentElement, HasChildren {
+public class TableRow implements DocumentElement, HasChildren<TableRow> {
     private final List<DocumentElement> children;
     private final boolean isHeader;
 
@@ -16,6 +16,11 @@ public class TableRow implements DocumentElement, HasChildren {
         return children;
     }
 
+    @Override
+    public TableRow replaceChildren(List<DocumentElement> newChildren) {
+        return new TableRow(newChildren, this.isHeader);
+    }
+
     @Override
     public <T, U> T accept(DocumentElementVisitor<T, U> visitor, U context) {
         return visitor.visit(this, context);
-- 
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