LicenseChooser.js is nearly ready! Please try the 0.97 preview.
- WpLicense uses LicenseChooser.js to provide a license selector for WordPress
- TypePad provides a widget for adding a license to hosted blogs.
You can read the source of these examples; they demonstrate some (but not all) of the combinations for advanced usage described below.
- CC License selector only
- Selector without the choice of "No license"
- Basic usage (all options visible)
- Basic usage from inside another form tag
- Selector where "no license" is the starting point
- Selector without a jurisdiction choice
- Selector with a specific license used as a starting point
- Selector with a specific license as a starting point with no jurisdiction selector, always using the "seeded" jurisdiction
- Selector where an old license version was given as the seed
- Selector that relies on Apache Content Negotiation for translations
You can play with a 0.97 pre-release right now!
- 2009-04-29: Released 0.97. This is the latest preview that is very close to 1.0. This release allows you to embed LicenseChooser.js inside a form tag. Thanks to John Horigan for reporting this issue and providing a patch (which we merged with some changes).
- 2009-03-16: Released 0.96. The help text for "Share alike" was wrong, mistakenly giving you the non-commercial help text. Fixed! This is an important update.
- 2008-08-27: Released 0.94. Stylistic issue found: image not always properly aligned with text in pop-up describing e.g. Share-Alike. We no longer user document.write() (yuck) to insert the HTML of the widget into the document; we now modify the innerHTML of a div we create ourselves. We may further harden the JS against namespace collisions with Kent Brewster's badges strategy.
- 2007-10-10: Released 0.92. Stylistic updates: Alex has gone to town on the chooser and styled it. It only shows jurisdictions that have launched. There are no known pending technical or visual issues.
- 2007-08-09: Released 0.9. We've changed the plan to add some features before 1.0 based on talking with potential users. All DOM elements are really prefixed with cc_js_ this time, and all strings really are available for translation this time. Documentation is updated for the 0.9 release, including a way to have the application developer specify only a single jurisdiction for the license. JSON output is validated before being sent to a web browser. Removed dependency on prototype.js. Server code changes to improve performance. Massive reduction of unused JS and CSS (this process began with 0.4).
- 2007-08-06: Released 0.4. All DOM elements are prefixed with cc_js_. The widget works in Opera and Safari and works with degraded functionality in Konqueror.
- 2007-08-01: Released 0.3. This release introduces Internet Explorer compatibility, Apache Content Negotiation to handle user language selection even if the server doesn't provide it for us, a hopefully-stable API for selecting a license, and license seeding.
- 2007-07-25: Released 0.2. The UI now doesn't ask or contain spurious questions, plus translation is halfway there.
- 2007-07-19: Released 0.1. Don't try to use this in production, but DO let us know how it fits into your systems and what you would want us to change.
- NOTE that whatever license version you provide, we always upgrade it to the most recent version the jurisdiction offers. We do display a Message underneath the license icon saying we did this.
Forcing a particular jurisdiction
To force the user to choose a license in a particular jurisdiction:
- First, use the "seeding" feature to seed the Attribution ("by") license in your jurisdiction
- Then, disable jurisdiction selection
Disabling jurisdiction selection
If you want to not offer the user a choice of jurisdictions:
- just append ?show_jurisdiction_chooser=n to the complete.js call.
Setting the license chooser to no license by default
If you want to set the license chooser to no license by default:
- just append ?default_option=no-license
Removing the "No license" option
If you want to not offer the user the option of selecting "no license:
- just append ?show_no-license_option=n to the query string
- You can append ?locale=XX to your call to complete.js to choose a language. The example distributed as index.html in the distribution package sets the language to US English this way.
- If omitted, Apache Content Negotiation will select the most appropriate language based on the user's preferences, defaulting to US English.
All of these result extraction systems are demonstrated in the examples.
- There are two hidden form fields called cc_js_result_uri and cc_js_result_name that respectively store the URI and name of the license selected by the user. Just do
document.getElementById("cc_js_result_uri").value(or "cc_js_result_name" instead) and you'll have the license information.
- There is an extra hidden form field containing the link to the image used. Simply get the element whose ID is cc_js_result_img and you will have a URL that is a permanent image. Hotlinking these images is allowed and encouraged.
- All LicenseChooser.js HTML elements that have IDs or classes start with "cc_js_" to avoid namespace collisions.
Full List of Query String Variables
- show/hide jurisdiction chooser
- show/hide "CC0" option
- show/hide "CC license" option
- show/hide "No license" option
- choose which option is present to the user first
- locale=(locale, ie 'en_US')
- choose language
You can specify as many of these options as you like by simply putting an '&' between them.
- Selector defaults to CC license chooser, is in US English, does not include a jurisdiction chooser, and does not include a "No license" option
- Selector in US English which defaults to the "No license" option and doesn't include the cc0 option
Currently, by default everything is displayed, and the CC license chooser is the default option. Thus, this query will return the exact same widget as the empty "complete.js"
(note that in this case, Apache content negotiation will be used to determine which language to use)
You might consider passing query string variables that assert settings that would be true due to default behavior anyway--this ensures that on the off chance that default behavior changes, your widget's behavior does not.
The following list of general goals to remind us what we want out of LicenseChooser.js. You can expect most of it for 1.0.
See JsWidget/Plan to see what features are planned for what versions.
- Generate HTML suitable for use in a form which presents the basic license selector
- Provide compatibility with all A-grade browsers
- Provide up to date license information by
- Support new, expanded metadata including attributionName, attributionUrl and morePermissions.
Zero point something (like 0.4)
There are no guarantees, but we'd like to keep to the same promises as a 1.0 release
Something point zero (like 1.0)
We guarantee (outside of really urgent situation where we exercise a judgement call) that these will not change:
- The programmatic interface for the widget will not change
- The user interface for selecting licenses will not change
The following are the only things that 'may change:
- As new translations become available, the text may become increasingly internationalized
- As jurisdictions offer new licenses, the engine will update the choices available to a user
- LicenseChooser.js development in Subversion
- Security considerations