Class: Webview::App

Inherits:
Object
  • Object
show all
Defined in:
lib/webview/app.rb

Constant Summary collapse

SIGNALS_MAPPING = 
if Gem.win_platform?
  {
    'QUIT' => 'EXIT',
  }
else
  {} # don't map
end

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(title: nil, width: nil, height: nil, resizable: nil, debug: false) ⇒ App

Returns a new instance of App.



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# File 'lib/webview/app.rb', line 16

def initialize(title: nil, width: nil, height: nil, resizable: nil, debug: false)
  @options = {
    title: title,
    width: width,
    height: height,
    resizable: resizable,
    debug: debug
  }
  @options.delete_if { |k, v| v.nil? }
  @app_out = nil
  @app_err = nil
  @app_process = nil
end

Instance Attribute Details

#app_err ⇒ Object (readonly)

Returns the value of attribute app_err.



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# File 'lib/webview/app.rb', line 6

def app_err
  @app_err
end

#app_out ⇒ Object (readonly)

Returns the value of attribute app_out.



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# File 'lib/webview/app.rb', line 6

def app_out
  @app_out
end

#app_process ⇒ Object (readonly)

Returns the value of attribute app_process.



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# File 'lib/webview/app.rb', line 6

def app_process
  @app_process
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/webview/app.rb', line 6

def options
  @options
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/webview/app.rb', line 42

def close
  return true unless app_process
  app_out.close
  app_err.close

  pid = app_process.pid
  signal('QUIT')
  begin
    Timeout.timeout(3) do
      begin
        Process.wait(pid)
      rescue Errno::ECHILD, Errno::ESRCH, Errno::EINVAL
      end
    end
  rescue Timeout::Error
    kill
  end

  @app_process = nil
end

#join ⇒ Object 



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# File 'lib/webview/app.rb', line 63

def join
  return unless app_process && app_process.alive?
  Process.wait(app_process.pid)
rescue Errno::ECHILD, Errno::ESRCH
end

#kill ⇒ Object 



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# File 'lib/webview/app.rb', line 69

def kill
  signal('KILL')
end

#open(url) ⇒ Object 



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# File 'lib/webview/app.rb', line 30

def open(url)
  return true if @app_process
  cmd = [executable, "-url \"#{url}\""]
  @options.each do |k, v|
    case v
    when true, false then cmd << "-#{k}" if v
    else cmd << "-#{k} \"#{v}\""
    end
  end
  exec_cmd(cmd.join(' '))
end

#signal(name) ⇒ Object 



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# File 'lib/webview/app.rb', line 73

def signal(name)
  return false unless app_process&.pid
  s = SIGNALS_MAPPING[name] || name
  Process.kill(Signal.list[s], app_process.pid)
  true
rescue Errno::ECHILD, Errno::ESRCH
  false
end