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Contexts: Difference between revisions
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(→Context types: The connection context is distinct from the browsing context.) |
(→Context types: add navigate) |
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| Line 13: | Line 13: | ||
! [[MIME Sniffing|Sniffing]] Algorithm | ! [[MIME Sniffing|Sniffing]] Algorithm | ||
|- | |- | ||
| browsing | | browsing (navigate) | ||
| [http://www.whatwg.org/specs/web-apps/current-work/multipage/#browsing-context HTML] | | [http://www.whatwg.org/specs/web-apps/current-work/multipage/#browsing-context HTML] | ||
| Yes | | Yes | ||
| Line 22: | Line 22: | ||
| rowspan="3" | [http://mimesniff.spec.whatwg.org/#mime-type-sniffing-algorithm MIME type sniffing algorithm] | | rowspan="3" | [http://mimesniff.spec.whatwg.org/#mime-type-sniffing-algorithm MIME type sniffing algorithm] | ||
|- | |- | ||
| nested browsing | | nested browsing (navigate) | ||
| [http://www.whatwg.org/specs/web-apps/current-work/multipage/#nested-browsing-context HTML] | | [http://www.whatwg.org/specs/web-apps/current-work/multipage/#nested-browsing-context HTML] | ||
| Yes | | Yes | ||
Revision as of 07:13, 20 June 2013
Context types
| Context | Definition | Used in HTML? | Used in CSS? | Scriptable? | CSP Directive | Type Hint | Sniffing Algorithm |
|---|---|---|---|---|---|---|---|
| browsing (navigate) | HTML | Yes | No? | Yes | — | MIME type sniffing algorithm | |
| nested browsing (navigate) | HTML | Yes | No? | Yes | frame-src
|
||
| connection | Yes | No? | Yes? | connect-src
|
|||
| image | Yes | Yes | No | img-src
|
rules for sniffing images specifically | ||
| audio/video | Yes | No? | No | media-src
|
rules for sniffing audio and video specifically | ||
| plugin | Yes | No? | Yes? | object-src
|
rules for sniffing in a plugin context | ||
| style | Yes | Yes? | No | style-src
|
@type or "text/css"
|
rules for sniffing in a style context | |
| script | Yes | No? | Yes? | script-src
|
@type or "text/javascript"
|
rules for sniffing in a script context | |
| font | No | Yes | No | font-src
|
format()
|
rules for sniffing fonts specifically | |
| text track | Yes | No | No | "text/vtt"
|
|||
| cache manifest | Yes | No | No | "text/cache-manifest"
|
How to use a context
- Identify context.
- Determine whether to fetch resource based on CSP directives and type hint, if any.
- Set no-sniff flag on resource, if necessary.
- Fetch resource.
- Handle resource.
- Sniff resource.
- Process and display resource or prompt to download resource, as appropriate.