Class: Browser::DOM::NodeSet

Inherits:
Object
  • Object
show all
Defined in:
opal/browser/dom/node_set.rb

Overview

Allows manipulation of a set of Nodes.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(literal) ⇒ NodeSet

Returns a new instance of NodeSet.



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# File 'opal/browser/dom/node_set.rb', line 13

def initialize(literal)
  @literal = literal
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object

Any other method will be called on every node in the set.



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# File 'opal/browser/dom/node_set.rb', line 18

def method_missing(name, *args, &block)
  unless @literal.respond_to? name
    each {|el|
      el.__send__(name, *args, &block)
    }

    return self
  end

  result = @literal.__send__ name, *args, &block

  if `result === #@literal`
    self
  elsif Array === result
    NodeSet.new(result)
  else
    result
  end
end

Class Method Details

.[](*nodes) ⇒ Object

Create a new Browser::DOM::NodeSet from the given nodes.

Note that the nodes are flattened and converted with DOM automatically, this means you can pass Browser::DOM::NodeSets and Native::Arrays as well.



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# File 'opal/browser/dom/node_set.rb', line 9

def self.[](*nodes)
  new(nodes.flatten.map { |x| DOM(Native.convert(x)) }.uniq)
end

Instance Method Details

#at_css(*rules) ⇒ Node?

Get the first node matching the given CSS selectors.

Parameters:

  • rules (Array<String>) —

    the CSS selectors to match with

Returns:



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# File 'opal/browser/dom/node_set.rb', line 43

def at_css(*rules)
  each {|node|
    if node = node.at_css(*rules)
      return node
    end
  }

  nil
end

#at_xpath(*paths) ⇒ Node?

Get the first node matching the given XPath.

Parameters:

  • paths (Array<String>) —

    the XPath to match with

Returns:



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# File 'opal/browser/dom/node_set.rb', line 58

def at_xpath(*paths)
  each {|node|
    if node = node.at_xpath(*paths)
      return node
    end
  }

  nil
end

#css(path) ⇒ NodeSet

Query for children matching the given CSS selector.

Parameters:

  • selector (String) —

    the CSS selector

Returns:



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# File 'opal/browser/dom/node_set.rb', line 73

def css(path)
  NodeSet[@literal.map {|node|
    node.css(path)
  }]
end

#filter(expression) ⇒ NodeSet

Create another Browser::DOM::NodeSet with all the nodes that match the given expression.

Parameters:

  • expression (String) —

    a CSS selector

Returns:



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# File 'opal/browser/dom/node_set.rb', line 85

def filter(expression)
  @literal.select { |node| node =~ expression }
end

#search(*what) ⇒ Object

Search for multiple selectors



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# File 'opal/browser/dom/node_set.rb', line 90

def search(*what)
  NodeSet[@literal.map { |node| node.search(*what) }]
end

#to_ary ⇒ Object 



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# File 'opal/browser/dom/node_set.rb', line 105

def to_ary
  @literal
end

#xpath(path) ⇒ NodeSet

Query for children matching the given XPath.

Parameters:

Returns:



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# File 'opal/browser/dom/node_set.rb', line 99

def xpath(path)
  NodeSet[@literal.map {|node|
    node.xpath(path)
  }]
end