Merge pull request #116 from Nakilon/position

Author: Mifrill

README.md

@@ -234,6 +234,14 @@ browser.go_to("https://github.com/")
 browser.stop
 ```
 
+#### position
+
+Set the position for the browser window bounds
+
+```ruby
+browser.position = { left: 10, top: 20 }
+browser.position # => [10, 20]
+```
 
 ## Finders
 

lib/ferrum/browser.rb

@@ -26,7 +26,7 @@ class Browser
                 frames frame_by main_frame
                 evaluate evaluate_on evaluate_async execute evaluate_func
                 add_script_tag add_style_tag bypass_csp
-                on goto] => :page
+                on goto position position=] => :page
     delegate %i[default_user_agent] => :process
 
     attr_reader :client, :process, :contexts, :logger, :js_errors, :pending_connection_errors,

lib/ferrum/page.rb

@@ -108,6 +108,14 @@ def resize(width: nil, height: nil, fullscreen: false)
                                                     fitWindow: false)
     end
 
+    def position
+      @browser.command("Browser.getWindowBounds", windowId: window_id).fetch("bounds").values_at("left", "top")
+    end
+
+    def position=(left:, top:)
+      @browser.command("Browser.setWindowBounds", windowId: window_id, bounds: { left: left, top: top })
+    end
+
     def refresh
       command("Page.reload", wait: timeout, slowmoable: true)
     end

spec/browser_spec.rb

@@ -125,6 +125,13 @@ module Ferrum
       end
     end
 
+    it "allows the window to be positioned" do
+      expect(browser.position).to eq([0, 0])
+      expect { browser.position = { left: 10, top: 20 } }.
+        to change { browser.position }
+      expect(browser.position).to eq([10, 20])
+    end
+
     it "allows the page to be scrolled" do
       browser.go_to("/ferrum/long_page")
       browser.resize(width: 10, height: 10)