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module Watir
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# This class is the means of accessing an image on a page.
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# Normally a user would not need to create this object as it is returned by the Watir::Container#image method
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#
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# many of the methods available to this object are inherited from the Element class
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#
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class Image < Element
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def initialize(container, how, what)
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set_container container
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@how = how
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@what = what
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super nil
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end
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def locate
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if @how == :xpath
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@o = @container.element_by_xpath(@what)
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else
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@o = @container.locate_tagged_element('IMG', @how, @what)
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end
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end
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# this method produces the properties for an image as an array
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def image_string_creator
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n = []
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n << "src:".ljust(TO_S_SIZE) + self.src.to_s
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n << "file date:".ljust(TO_S_SIZE) + self.fileCreatedDate.to_s
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n << "file size:".ljust(TO_S_SIZE) + self.fileSize.to_s
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n << "width:".ljust(TO_S_SIZE) + self.width.to_s
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n << "height:".ljust(TO_S_SIZE) + self.height.to_s
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n << "alt:".ljust(TO_S_SIZE) + self.alt.to_s
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return n
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end
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private :image_string_creator
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# returns a string representation of the object
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def to_s
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assert_exists
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r = string_creator
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r += image_string_creator
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return r.join("\n")
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end
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# this method returns the file created date of the image
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jarib
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def file_created_date
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bret
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assert_exists
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return @o.invoke("fileCreatedDate")
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end
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# this method returns the filesize of the image
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jarib
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def file_size
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bret
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assert_exists
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return @o.invoke("fileSize").to_s
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end
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# returns the width in pixels of the image, as a string
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def width
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assert_exists
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return @o.invoke("width").to_s
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end
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# returns the height in pixels of the image, as a string
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def height
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assert_exists
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return @o.invoke("height").to_s
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end
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# This method attempts to find out if the image was actually loaded by the web browser.
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# If the image was not loaded, the browser is unable to determine some of the properties.
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# We look for these missing properties to see if the image is really there or not.
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# If the Disk cache is full (tools menu -> Internet options -> Temporary Internet Files), it may produce incorrect responses.
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jarib
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def loaded?
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bret
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locate
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raise UnknownObjectException, "Unable to locate image using #{@how} and #{@what}" if @o == nil
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return false if @o.fileCreatedDate == "" and @o.fileSize.to_i == -1
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return true
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end
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# this method highlights the image (in fact it adds or removes a border around the image)
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# * set_or_clear - symbol - :set to set the border, :clear to remove it
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def highlight(set_or_clear)
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if set_or_clear == :set
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begin
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@original_border = @o.border
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@o.border = 1
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rescue
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@original_border = nil
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end
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else
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begin
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@o.border = @original_border
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@original_border = nil
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rescue
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# we could be here for a number of reasons...
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ensure
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@original_border = nil
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end
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end
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end
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private :highlight
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# This method saves the image to the file path that is given. The
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# path must be in windows format (c:\\dirname\\somename.gif). This method
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# will not overwrite a previously existing image. If an image already
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# exists at the given path then a dialog will be displayed prompting
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# for overwrite.
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# Raises a WatirException if AutoIt is not correctly installed
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# path - directory path and file name of where image should be saved
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def save(path)
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require 'watir/windowhelper'
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WindowHelper.check_autoit_installed
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@container.goto(src)
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begin
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thrd = fill_save_image_dialog(path)
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@container.document.execCommand("SaveAs")
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thrd.join(5)
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ensure
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@container.back
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end
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end
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def fill_save_image_dialog(path)
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Thread.new do
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system("ruby -e \"require 'win32ole'; @autoit=WIN32OLE.new('AutoItX3.Control'); waitresult=@autoit.WinWait 'Save Picture', '', 15; if waitresult == 1\" -e \"@autoit.ControlSetText 'Save Picture', '', '1148', '#{path}'; @autoit.ControlSend 'Save Picture', '', '1', '{ENTER}';\" -e \"end\"")
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end
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end
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private :fill_save_image_dialog
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end
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end
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\ No newline at end of file |
