Engrenages droits

# Some problems with execute\_script **URL:** \ **Category:** Ruby API\ **Created:** [March 30, 2021, 10:46am UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921 "2021-03-30T10:46:54Z")\ **Posts on this page:** 12\ **Page:** 1

**Author:** ![LE\_GALL](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/le_gall/32/74794_2.png) [@LE\_GALL](https://forums.sketchup.com/u/LE_GALL)\ **Post date:** [March 30, 2021, 10:46am UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/1 "2021-03-30T10:46:55Z")

Good morning to all of you. Can someone explain to me why example 1 below does not work when example 2, below, works? To run these examples; install them in the Sketchup.temp\_dir directory under file names: For example 1 “right gears.rb” and “engrenagesdroits.html”, ```nohighlight require 'sketchup.rb' html_dialog = UI::HtmlDialog.new path = Sketchup.temp_dir + "/engrenagesdroits.html" puts "path = #{path.inspect}" html_dialog.set_file path @label = "un autre label" js_command = "loadlabel("+@label+")" html_dialog.execute_script(js_command) html_dialog.show ``` ```nohighlight Engrenages droits

``` For example 2 “point\_checker.rb” and “point\_checker2.html”. ```nohighlight # Create a class that extends EntityObserver class EntObserver < Sketchup::EntityObserver # Invoquerd when the Entity changes def onChangeEntity(entity) f_count = 1 # Execute the script with the vertex locations for v in entity.vertices args = "'" + v.position.x.to_s + "', '" + v.position.y.to_s + "', '" + v.position.z.to_s + "'" $wd.execute_script("setPoint" + f_count.to_s + "(" + args + ")") f_count = f_count + 1 end end # Invoquerd when the Entity is deleted def onEraseEntity(entity) $wd.execute_script("faceDeleted()") end end # Add an Edge and a Face to the model ents = Sketchup.active_model.entities face = ents.add_face [0,0,0], [10,0,0], [10,10,0], [0,10,0] # Associate a new observer with the face and edge obs = EntObserver.new face.add_observer obs # Create a WebDialog and set its HTML $wd = UI::WebDialog.new "Point Checker" path = Sketchup.temp_dir + "/point_checker2.html" $wd.set_file path $wd.show ``` ```nohighlight Point 1: Initial position
Point 2: Initial position
Point 3: Initial position
Point 4: Initial position
``` If it is possible to operate example 1, how do you do it? Thank you On SkectchUp Make Version 17.2.2555 64 Bits Windows 10 Family Version 8:2 PM ---

**Author:** ![Aerilius](https://avatars.discourse-cdn.com/v4/letter/a/e19b73/32.png) [@Aerilius](https://forums.sketchup.com/u/Aerilius)\ **Post date:** [March 30, 2021, 11:54am UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/2 "2021-03-30T11:54:54Z")

The code samples turned out incomplete (and haaard to read). Can you click the ✏ (Edit) button on your post and edit your post, delete the broken code samples, click the \ button to create a “code block” and paste each code sample again into a code block? Thanks! ---

**Author:** ![DanRathbun](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/danrathbun/32/500_2.png) [@DanRathbun](https://forums.sketchup.com/u/DanRathbun)\ **Post date:** [March 30, 2021, 5:38pm UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/3 "2021-03-30T17:38:50Z")

> [@LE\_GALL](#): > > ```auto > js_command = "loadlabel("+@label+")" > html_dialog.execute_script(js_command) > html_dialog.show > > ``` The statement `html_dialog.show` loads the dialog window and the CEF instance then loads the HTML into it. **You are calling `execute_script` upon something that has not yet loaded.** Secondly, use a JS onload event to signal the Rubyside that the HTML page is loaded and ready to receive data via `execute_script`. Thirdly, your HTML file should be within your extension folder. Putting it in the temp folder just adds complexity. ---

**Author:** ![LE\_GALL](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/le_gall/32/74794_2.png) [@LE\_GALL](https://forums.sketchup.com/u/LE_GALL)\ **Post date:** [April 3, 2021, 10:10pm UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/4 "2021-04-03T22:10:30Z")

OK Thanks Dan ---

**Author:** ![kengey](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/kengey/32/234545_2.png) [@kengey](https://forums.sketchup.com/u/kengey)\ **Post date:** [April 5, 2021, 12:12pm UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/5 "2021-04-05T12:12:53Z")

> [@LE\_GALL](#): > > ```auto > @label = "un autre label" > js_command = "loadlabel("+@label+")" > > ``` will then become `js_command = "loadlabel(un autre label)"` while, what you need is: `js_command = "loadlabel(\"un autre label\")"` So you should do: ```auto @label = "un autre label" js_command = "loadlabel(\""+@label+"\")" ``` ---

**Author:** ![LE\_GALL](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/le_gall/32/74794_2.png) [@LE\_GALL](https://forums.sketchup.com/u/LE_GALL)\ **Post date:** [April 5, 2021, 11:25pm UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/6 "2021-04-05T23:25:11Z")

Sorry kengey, your suggestion doesn’t change anything. Thank you anyway. ---

**Author:** ![kengey](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/kengey/32/234545_2.png) [@kengey](https://forums.sketchup.com/u/kengey)\ **Post date:** [April 6, 2021, 8:32am UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/7 "2021-04-06T08:32:00Z")

Open the developer console (right click somewhere and press Inspect Element) in the `HtmlDialog` then enter `loadlabel("un autre label")` in the javascript console. What output do you get? Also, I see you are calling `execute_script` right after opening the dialog. The JS code in that dialog might not be loaded yet when ruby already tries to call it. ---

**Author:** ![LE\_GALL](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/le_gall/32/74794_2.png) [@LE\_GALL](https://forums.sketchup.com/u/LE_GALL)\ **Post date:** [April 6, 2021, 12:15pm UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/8 "2021-04-06T12:15:34Z")

Hello Kengey. Here are actually the sources that are being tested, until the unsuccessful: ```ruby require 'sketchup.rb' html_dialog = UI::HtmlDialog.new path = Sketchup.temp_dir + "/engrenagesdroits.html" puts path html_dialog.set_file path @label = "un autre label" @js_command = "loadlabel(\""+@label+"\")" html_dialog.show #=begin html_dialog.add_action_callback("say_arg") {|dialog, arg| puts "The callback argument is: " + arg.to_s html_dialog.execute_script(@js_command) } #=end #html_dialog.execute_script(@js_command) ; puts "17" puts "18" ``` ```nohighlight Engrenages droits

``` The “Cliquer pour changer les labels ci-dessous” button works well, as does running live via the JavaScript console. But impossible to run directly loadlabel right after loading the web dialogue. The Javascript console tells me all the time the following message: "Failed to clear temp storage: It was determined that certain files are unsafe for access within a web application, or that too many calls are being made on file resources. “SecurityError” ---

**Author:** ![DanRathbun](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/danrathbun/32/500_2.png) [@DanRathbun](https://forums.sketchup.com/u/DanRathbun)\ **Post date:** [April 6, 2021, 1:08pm UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/9 "2021-04-06T13:08:29Z")

**NOTES** : **(1)** > [@LE\_GALL](#): > > ```auto > > > > ``` These two meta elements are **MS Internet Explorer specific**. (They would only be used on Windows platform and using the old deprecated [`UI::WebDialog`](https://ruby.sketchup.com/UI/WebDialog.html) class windows, which should only be used for SketchUp 2016 and older.) The [`UI::HtmlDialog`](https://ruby.sketchup.com/UI/HtmlDialog.html) class uses a Chromium browser window. So, I would expect that these elements will just be ignored. * * * **(2)** > [@LE\_GALL](#): > > ```javascript > function init_dialog(){ > window.location = "skp:say_arg@Hello world!"; > alert ("Amorce du dialogue") > }; > > ``` The [`UI::HtmlDialog`](https://ruby.sketchup.com/UI/HtmlDialog.html) class should use the predefined **`sketchup`** JavaScript object to communicate back to SketchUp Ruby. Example: ```javascript function init_dialog(){ sketchup.say_arg("Hello world!"); alert("Amorce du dialogue"); }; ``` * * * **(3)** > [@LE\_GALL](#): > > ```ruby > js_command = "loadlabel("+@label+")" > > ``` You should learn to leverage Ruby string interpolation rather than clunky string concatenation calls. Each call to [`String#+`](https://ruby-doc.org/core-2.5.5/String.html#method-i-2B) creates another new String object, so your statement begins with 3 Strings, and creates 2 more. See the primer on String literals: - [File: literals.rdoc [Ruby 2.5.5]](https://ruby-doc.org/core-2.5.5/doc/syntax/literals_rdoc.html#label-Strings) Ex: ```ruby js_command = %[loadlabel("#{@label}");] ``` (Ie, `%` and `%Q` are both double-quoted strings. `%q` is a single-quoted string. Any set of brackets or braces can be used as the delimiters. Since the JS function call uses parenthesis, and Ruby string interpolation uses `#{}`, I avoid them and usually use square bracket delimeters for building JS command strings.) * * * **(4)** Rather than mix your JavaScript within HTML body elements, it is more usual to put one ` label1

Label2

Label3

``` ---

**Author:** ![DanRathbun](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/danrathbun/32/500_2.png) [@DanRathbun](https://forums.sketchup.com/u/DanRathbun)\ **Post date:** [April 6, 2021, 2:09pm UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/11 "2021-04-06T14:09:21Z")

**(6)** > [@LE\_GALL](#): > > ```auto > html_dialog.show > > html_dialog.add_action_callback("say_arg") {|dialog, arg| > puts "The callback argument is: " + arg.to_s > # html_dialog.execute_script(@js_command) > } > > ``` I would suggest to attach callbacks **before** creating the window via `dialog.show`. **This is because the links between Ruby and the CEF window are done with the `#show` call.** * * * **(7)** Try this alternative to the `

` onload event … change: ```javascript ``` to: ```javascript ``` At the bottom of your JavaScript file, add: ```javascript ``` And in your Ruby file, **before** showing the dialog, add: ```ruby html_dialog.add_action_callback("ready") { |dialog| html_dialog.execute_script(@js_command) } ``` * * * > [@LE\_GALL](#): > > Obviously, I don’t plan to install my future app in Sketchup.temp\_dir. These are just bits and pieces of testing programs. You should **test** code in the proper environment for **how it will load and run normally** , not abnormally. **How are you loading this test ?** ---

**Author:** ![LE\_GALL](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/le_gall/32/74794_2.png) [@LE\_GALL](https://forums.sketchup.com/u/LE_GALL)\ **Post date:** [April 6, 2021, 2:58pm UTC](https://forums.sketchup.com/t/some-problems-with-execute-script/158921/12 "2021-04-06T14:58:23Z")

Good morning, Dan. OK. This version works. Thank you very much.: ```ruby require 'sketchup.rb' html_dialog = UI::HtmlDialog.new path = Sketchup.temp_dir + "/engrenagesdroits.html" html_dialog.set_file path @label = "un autre label" js_command = %[loadlabel("#{@label}");] html_dialog.add_action_callback("ready") { |dialog| html_dialog.execute_script(js_command) } html_dialog.show ``` ```nohighlight Engrenages droits

label1

Label2

Label3

``` For tests I just save the html file in the directory Sketchup.temp\_dir and I run the ruby file in my test directory. Thank you again. 😀