Class: Grope::Env

Inherits:
Object
  • Object
show all
Defined in:
lib/grope/env.rb

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Env

Returns a new instance of Env.



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# File 'lib/grope/env.rb', line 5

def initialize(options = {})
  @options = {
    :timeout => 60,
    :use_shared_cookie => false,
    :init_width => 1024,
    :init_height => 600
  }.merge(options)

  NSApplication.sharedApplication
  @webview = WebView.alloc
  @webview.initWithFrame(rect)
  @webview.setPreferencesIdentifier('Grope')
  @webview.preferences.setShouldPrintBackgrounds(true)
  @webview.preferences.setAllowsAnimatedImages(false)
  @webview.mainFrame.frameView.setAllowsScrolling(false)
  @webview.setMediaStyle('screen')

  create_window

  @frame_load_delegate = FrameLoadDelegate.alloc.init
  @webview.setFrameLoadDelegate(@frame_load_delegate)

  unless @options[:use_shared_cookie]
    @resource_load_delegate = WebResourceLoadDelegate.alloc.init
    @resource_load_delegate.cookie_storage = Mechanize::CookieJar.new
    @webview.setResourceLoadDelegate(@resource_load_delegate)
  end
end

Instance Method Details

#all(xpath, node = nil) ⇒ Object 



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# File 'lib/grope/env.rb', line 152

def all(xpath, node = nil)
  node ||= document
  js.xpath(xpath, node)
end

#capture(elem = nil, filename = "capture.png") ⇒ Object 



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# File 'lib/grope/env.rb', line 161

def capture(elem = nil, filename = "capture.png")
  view = @webview.mainFrame.frameView.documentView
  bounds = view.bounds

  if elem
    position = js.getElementPosition(elem)

    raise "element's width is 0" if position.width.zero?
    raise "element's height is 0" if position.height.zero?

    bounds.origin.x = position.left
    bounds.origin.y = position.top
    bounds.size.width = position.width
    bounds.size.height = position.height
  end

  wait

  view.display
  view.window.setContentSize(NSUnionRect(view.bounds, bounds).size)
  view.setFrame(NSUnionRect(view.bounds, bounds))

  view.lockFocus
  bitmapdata = NSBitmapImageRep.alloc
  bitmapdata.initWithFocusedViewRect(bounds)
  view.unlockFocus

  bitmapdata.representationUsingType_properties(NSPNGFileType, nil).
    writeToFile_atomically(filename.to_s, 1)
end

#document ⇒ Object 



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# File 'lib/grope/env.rb', line 144

def document
  eval('return document;')
end

#eval(js) ⇒ Object 



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# File 'lib/grope/env.rb', line 43

def eval(js)
  value = nil
  run do
    wso = @webview.windowScriptObject
    value = WSOWrapper.wrap(wso.evaluateWebScript(<<JS % js))
(function() {
  var Grope = {
click: function(e) { this._dispatchMouseEvent(e, 'click') },
mouseover: function(e) { this._dispatchMouseEvent(e, 'mouseover') },
mouseout: function(e) { this._dispatchMouseEvent(e, 'mouseout') },
mousedown: function(e) { this._dispatchMouseEvent(e, 'mousedown') },
mouseup: function(e) { this._dispatchMouseEvent(e, 'mouseup') },
xpath: function(exp, context, type /* want type */) {
  if (typeof context == "function") {
    type = context;
    context = null;
  }
  if (!context) context = document;
  exp = (context.ownerDocument || context).createExpression(exp, function (prefix) {
    var o = document.createNSResolver(context)(prefix);
    if (o) return o;
    return (document.contentType == "application/xhtml+xml") ? "http://www.w3.org/1999/xhtml" : "";
  });

  switch (type) {
  case String: return exp.evaluate(context, XPathResult.STRING_TYPE, null).stringValue;
  case Number: return exp.evaluate(context, XPathResult.NUMBER_TYPE, null).numberValue;
  case Boolean: return exp.evaluate(context, XPathResult.BOOLEAN_TYPE, null).booleanValue;
  case Array:
    var result = exp.evaluate(context, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var ret = [], i = 0, len = result.snapshotLength; i < len; i++) {
      ret.push(result.snapshotItem(i));
    }
    return ret;
  case undefined:
    var result = exp.evaluate(context, XPathResult.ANY_TYPE, null);
    switch (result.resultType) {
    case XPathResult.STRING_TYPE : return result.stringValue;
    case XPathResult.NUMBER_TYPE : return result.numberValue;
    case XPathResult.BOOLEAN_TYPE: return result.booleanValue;
    case XPathResult.UNORDERED_NODE_ITERATOR_TYPE:
      // not ensure the order.
      var ret = [], i = null;
      while ((i = result.iterateNext())) ret.push(i);
      return ret;
    }
    return null;
  default: throw(TypeError("$X: specified type is not valid type."));
  }
},
getElementPosition: function(elem) {
  var position = elem.getBoundingClientRect();
  return {
    left: Math.round(window.scrollX+position.left),
    top: Math.round(window.scrollY+position.top),
    width: elem.clientWidth,
    height: elem.clientHeight
  }
},

_dispatchMouseEvent: function(e, type, dst) {
  var evt = document.createEvent('MouseEvents');
  dst = dst || e;
  var pos = dst.getBoundingClientRect();
  evt.initMouseEvent(type, true, true, window, 0, 0, 0, Math.round(pos.left), Math.round(pos.top), false, false, false, false, 0, null);
  e.dispatchEvent(evt);
}
  };

  %s
})()
JS
  end
  wait
  value
end

#find(xpath, node = nil) ⇒ Object 



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# File 'lib/grope/env.rb', line 157

def find(xpath, node = nil)
  all(xpath, node)[0]
end

#load(url) ⇒ Object 



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# File 'lib/grope/env.rb', line 34

def load(url)
  run do
    @webview.setMainFrameURL(url)
    if !@webview.mainFrame.provisionalDataSource && url !~ /^about:/
      raise " ... not a proper url?"
    end
  end
end

#wait(sec = 0) ⇒ Object 



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# File 'lib/grope/env.rb', line 120

def wait(sec = 0)
  run(sec) do; end
end

#wait_until(options = {}) ⇒ Object

Raises:

  • (TimeoutError) 


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# File 'lib/grope/env.rb', line 124

def wait_until(options = {})
  options = {
    :timeout => 10
  }.merge(options)

  start = Time.now.to_i

  begin
    result = yield self

    if result
      return result
    end

    wait(1)
  end until Time.now.to_i >= start + options[:timeout]

  raise TimeoutError
end

#window ⇒ Object 



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# File 'lib/grope/env.rb', line 148

def window
  eval('return window;')
end