nsISearchEngine 编辑

Inherits from: nsISupports

Method overview

Attributes

Constants

Search engine type constants

Search engine data type constants

Methods

addParam()

Adds a parameter to the search engine's submission data. This should only be called on engines created via nsIBrowserSearchService.addEngineWithDetails().

void addParam(
  in AString name,
  in AString value,
  in AString responseType
);

Parameters

name

The name of the parameter to add.

value

The value to pass. If value is "{searchTerms}", it will be substituted with the user-entered data when retrieving the submission. Must not be null.

responseType

Since an engine can have several different request URLs, differentiated by response types, this parameter selects a request to add parameters to. If null, will default to "text/html"

Exceptions thrown

NS_ERROR_INVALID_ARG

If name or value are null.

NS_ERROR_FAILURE

If the search engine is read-only.

getSubmission()

Gets a nsISearchSubmission object that contains information about what to send to the search engine, including the URI and postData, if applicable.

nsISearchSubmission getSubmission(
  in AString data,
  [optional] in AString responseType,
  [optional] in AString purpose
);

Parameters

data

Data to add to the submission object. That is the search terms.

responseType

[optional] The MIME type that we'd like to receive in response to this submission. If null, will default to "text/html".

purpose

[optional] A string meant to indicate the context of the search request. This allows the search service to provide a different nsISearchSubmission depending on e.g. where the search is triggered in the UI. Possible values depend on the application's installed search engines.

Return value

An nsISearchSubmission

supportsResponseType()

Determines whether the engine can return responses in the given MIME type.

boolean supportsResponseType(
  in AString responseType
);

Parameters

responseType

The MIME type to check for.

Return value

Returns true if the engine spec has a URL with the given responseType, false otherwise.

See also

• nsISearchSubmission
• nsIBrowserSearchService