adding support for embedded functions inside the google visualization

[golsombe]

I needed a new function inside the draw_chart() function to support custom tooltips for the TreeMap chart. Added a new add_function method along with additional spec for testing. Please advise?

Ex:

@chart.add_function("   function showTooltip(row, size, value) {
    return '<div style=\"background:#99dcff; padding:10px; border-style:solid; font-size: small;\">' +
           '<span style=\"font-family:Times;\"><b>' + data_table.getValue(row, 1) + '<\b></span><br></div>';  }")

[houndci-bot]

Use the new Ruby 1.9 hash syntax.
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Surrounding space missing for operator '=>'.
Space inside { missing.
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[houndci-bot]

Use the new Ruby 1.9 hash syntax.
Surrounding space missing for operator '=>'.

[houndci-bot]

Use the new Ruby 1.9 hash syntax.

[winston]

Should be https://developers.google.com/chart/interactive/docs/gallery/calendar instead.

[winston]

Hi! Thanks for the PR!

The stuff for the new calendar chart is great (and can be extracted as another PR), and I'll merge that. However, I am not so sure about introducing the embedded functions, as it doesn't look too good if you have to write JS in the code, which is precisely the reason for this gem.

Do you have a specific use case that cannot be done with listeners?

Let me know.

Thank you!

[golsombe]

If you take a look at the Treemap example in Google charts, they
demonstrate a custom tooltip function that I use in my project. Since I
have to be within the outer drawchart function, I need it embedded in
google_visualr. I'll admit that I'm not the best js developer, so if you
can figure a way to use a listener by all means educate me.

As for the calendar, I wasn't quite ready to release it to the project but
an accident git push went to master instead of my working branch which is
why you got it earlier than I intended. I'll clean up the errors and take
a stab at a document page along with a spec tomorrow. The code does work,
just isn't as pretty as it needs to be.

Thanks for google_visualr. It's a great time saver and makes the visuals
section of my projects nice and dry. I plan on tackling some binders and
controls next.

Robert Hall
[email protected]
@golsombe Twitter
On Jun 15, 2014 9:18 PM, "Winston" [email protected] wrote:

Hi! Thanks for the PR!

The stuff for the new calendar chart is great (and can be extracted as
another PR), and I'll merge that. However, I am not so sure about
introducing the embedded functions, as it doesn't look too good if you have
to write JS in the code, which is precisely the reason for this gem.

Do you have a specific use case that cannot be done with listeners?

Let me know.

Thank you!

Reply to this email directly or view it on GitHub
#74 (comment).

[winston]

I had a look at the treemap example, and it seems like you can actually do

var options = {
    minColor: 'red',
    midColor: '#ddd',
    maxColor: '#0d0',
    headerHeight: 15,
    fontColor: 'black',
    showScale: true,
    generateTooltip: function hi() { return '<div>ok</div>'; }
}

tree.draw(data, options);

So I guess in the Ruby code, you can also do the same, instead of creating additional functions.

Will that work for you? I am thinking that this is an edge case for treemap, and am still unsure if it the gem should support adding functions at this point.