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author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
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committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/lib/rexml/child.rb |
Fresh start
Diffstat (limited to 'jni/ruby/lib/rexml/child.rb')
-rw-r--r-- | jni/ruby/lib/rexml/child.rb | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/jni/ruby/lib/rexml/child.rb b/jni/ruby/lib/rexml/child.rb new file mode 100644 index 0000000..bf97d5f --- /dev/null +++ b/jni/ruby/lib/rexml/child.rb @@ -0,0 +1,96 @@ +require "rexml/node" + +module REXML + ## + # A Child object is something contained by a parent, and this class + # contains methods to support that. Most user code will not use this + # class directly. + class Child + include Node + attr_reader :parent # The Parent of this object + + # Constructor. Any inheritors of this class should call super to make + # sure this method is called. + # parent:: + # if supplied, the parent of this child will be set to the + # supplied value, and self will be added to the parent + def initialize( parent = nil ) + @parent = nil + # Declare @parent, but don't define it. The next line sets the + # parent. + parent.add( self ) if parent + end + + # Replaces this object with another object. Basically, calls + # Parent.replace_child + # + # Returns:: self + def replace_with( child ) + @parent.replace_child( self, child ) + self + end + + # Removes this child from the parent. + # + # Returns:: self + def remove + unless @parent.nil? + @parent.delete self + end + self + end + + # Sets the parent of this child to the supplied argument. + # + # other:: + # Must be a Parent object. If this object is the same object as the + # existing parent of this child, no action is taken. Otherwise, this + # child is removed from the current parent (if one exists), and is added + # to the new parent. + # Returns:: The parent added + def parent=( other ) + return @parent if @parent == other + @parent.delete self if defined? @parent and @parent + @parent = other + end + + alias :next_sibling :next_sibling_node + alias :previous_sibling :previous_sibling_node + + # Sets the next sibling of this child. This can be used to insert a child + # after some other child. + # a = Element.new("a") + # b = a.add_element("b") + # c = Element.new("c") + # b.next_sibling = c + # # => <a><b/><c/></a> + def next_sibling=( other ) + parent.insert_after self, other + end + + # Sets the previous sibling of this child. This can be used to insert a + # child before some other child. + # a = Element.new("a") + # b = a.add_element("b") + # c = Element.new("c") + # b.previous_sibling = c + # # => <a><b/><c/></a> + def previous_sibling=(other) + parent.insert_before self, other + end + + # Returns:: the document this child belongs to, or nil if this child + # belongs to no document + def document + return parent.document unless parent.nil? + nil + end + + # This doesn't yet handle encodings + def bytes + document.encoding + + to_s + end + end +end |