Multiple Action Callbacks?

MartinRinehart

The docs don't say you can do this, but in my first test, it worked. Anybody using this in production code?


# selectionInfo.rb
require 'sketchup.rb'

# Create the WebDialog instance
wd = UI;;WebDialog.new("Selection Info", false, "Selection Info", 200, 200, 200, 200, true)

# Attach an action callback
wd.add_action_callback("refresh") do | js_wd, ignored_param |

	total_selected = Sketchup.active_model.selection.length
	script = "rubyReturned("+ total_selected.to_s + ")"
	js_wd.execute_script( script )

end

wd.add_action_callback("lie") do | js_wd, ignored_param |
	js_wd.execute_script( "rubyReturned( 'A million' )" )
end

# Find and show our html file
wd.set_file( 'c;/models/rubies/selectionInfo.html' )
wd.show()

You'll need to change that hard-wired path to your own.


<!-- selectionInfo.html -->
<html> <head> <script>

function rubyCalled( nop ) {
	query = 'skp;refresh@' + nop;
	window.location.href = query;
}

function rubyLies( nop ) {
	query = 'skp;lie@' + nop;
	window.location.href = query
}

function rubyReturned( value ) {
	var message = value + " items selected.";
	document.getElementById('output').innerHTML = message;
}

</script> </head>

<body onload='rubyCalled("refresh")'>

<div align=center> <h3 id="output"> </h3>
<button onclick="rubyCalled('this_is_ignored')">Refresh</button>
<button onclick="rubyLies('this_too_is_ignored')">Tell Lie</button> </div>

</body> </html>

(Thank you, Scott Lininger, for the original code.)

Jim

I was not aware of any limitation on the number of callbacks. Out of curiosity, where did you read that?

MartinRinehart

@jim said:

I was not aware of any limitation on the number of callbacks. Out of curiosity, where did you read that?

I had assumed that you needed a switch in "the" action callback for various options. Didn't know that the "get_data" part of 'skp:get_data@'... from Scott's how-to was a variable.

And where does one report that the invaluable link to Scott's article in the doc is simple text, not a link?

Jim

One technique I have used is to pass the name of the Ruby callback to the Javascript. In many cases, you can use a single Javascript function to call any number of Ruby callbacks.


function callRuby(callback_name, parameters) {
  window.location="skp;"+callback_name+"@"+paramters;
}
<input type="button" onclick="callRuby('draw_square', 10);" value="Draw a Square">

MartinRinehart

@jim said:

One technique I have used is to pass the name of the Ruby callback to the Javascript. In many cases, you can use a single Javascript function to call any number of Ruby callbacks.

Neat trick, and that tells me exactly what I wanted to know. Now where to we go to get the docs to say "add one or more callbacks ..."?