The OpenD Programming Language

cef_transition_type_t

Transition type for a request. Made up of one source value and 0 or more qualifiers.

Values

ValueMeaning
TT_EXPLICIT1

Source is some other "explicit" navigation. This is the default value for navigations where the actual type is unknown. See also TT_DIRECT_LOAD_FLAG.

TT_AUTO_BOOKMARK2

User got to this page through a suggestion in the UI (for example, via the destinations page). Chrome runtime only.

TT_AUTO_SUBFRAME3

Source is a subframe navigation. This is any content that is automatically loaded in a non-toplevel frame. For example, if a page consists of several frames containing ads, those ad URLs will have this transition type. The user may not even realize the content in these pages is a separate frame, so may not care about the URL.

TT_MANUAL_SUBFRAME4

Source is a subframe navigation explicitly requested by the user that will generate new navigation entries in the back/forward list. These are probably more important than frames that were automatically loaded in the background because the user probably cares about the fact that this link was loaded.

TT_GENERATED5

User got to this page by typing in the URL bar and selecting an entry that did not look like a URL. For example, a match might have the URL of a Google search result page, but appear like "Search Google for ...". These are not quite the same as EXPLICIT navigations because the user didn't type or see the destination URL. Chrome runtime only. See also TT_KEYWORD.

TT_AUTO_TOPLEVEL6

This is a toplevel navigation. This is any content that is automatically loaded in a toplevel frame. For example, opening a tab to show the ASH screen saver, opening the devtools window, opening the NTP after the safe browsing warning, opening web-based dialog boxes are examples of AUTO_TOPLEVEL navigations. Chrome runtime only.

TT_FORM_SUBMIT7

Source is a form submission by the user. NOTE: In some situations submitting a form does not result in this transition type. This can happen if the form uses a script to submit the contents.

TT_RELOAD8

Source is a "reload" of the page via the Reload function or by re-visiting the same URL. NOTE: This is distinct from the concept of whether a particular load uses "reload semantics" (i.e. bypasses cached data).

TT_KEYWORD9

The url was generated from a replaceable keyword other than the default search provider. If the user types a keyword (which also applies to tab-to-search) in the omnibox this qualifier is applied to the transition type of the generated url. TemplateURLModel then may generate an additional visit with a transition type of TT_KEYWORD_GENERATED against the url 'http://' + keyword. For example, if you do a tab-to-search against wikipedia the generated url has a transition qualifer of TT_KEYWORD, and TemplateURLModel generates a visit for 'wikipedia.org' with a transition type of TT_KEYWORD_GENERATED. Chrome runtime only.

TT_KEYWORD_GENERATED10

Corresponds to a visit generated for a keyword. See description of TT_KEYWORD for more details. Chrome runtime only.

TT_SOURCE_MASK0xFF

General mask defining the bits used for the source values.

TT_BLOCKED_FLAG0x00800000

Qualifiers. Any of the core values above can be augmented by one or more qualifiers. These qualifiers further define the transition.

Attempted to visit a URL but was blocked.

TT_FORWARD_BACK_FLAG0x01000000

Used the Forward or Back function to navigate among browsing history. Will be ORed to the transition type for the original load.

TT_DIRECT_LOAD_FLAG0x02000000

Loaded a URL directly via CreateBrowser, LoadURL or LoadRequest.

TT_HOME_PAGE_FLAG0x04000000

User is navigating to the home page. Chrome runtime only.

TT_FROM_API_FLAG0x08000000

The transition originated from an external application; the exact definition of this is embedder dependent. Chrome runtime and extension system only.

TT_CHAIN_START_FLAG0x10000000

The beginning of a navigation chain.

TT_CHAIN_END_FLAG0x20000000

The last transition in a redirect chain.

TT_CLIENT_REDIRECT_FLAG0x40000000

Redirects caused by JavaScript or a meta refresh tag on the page.

TT_SERVER_REDIRECT_FLAG0x80000000

Redirects sent from the server by HTTP headers.

TT_IS_REDIRECT_MASK0xC0000000

Used to test whether a transition involves a redirect.

TT_QUALIFIER_MASK0xFFFFFF00

General mask defining the bits used for the qualifiers.

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