netsurf/desktop/searchweb.h

135 lines
4.0 KiB
C

/*
* Copyright 2014 Vincent Sanders <vince@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file desktop/searchweb.h
* \brief core web search facilities interface.
*/
#ifndef _NETSURF_DESKTOP_SEARCH_WEB_H_
#define _NETSURF_DESKTOP_SEARCH_WEB_H_
struct bitmap;
struct nsurl;
/**
* Graphical user interface browser web search function table.
*
*/
struct gui_search_web_table {
/**
* called when the search provider details are updated.
*
* \param provider_name The name of the provider.
* \param ico_bitmap The bitmap of the search icon may be NULL
* if no icon is yet available.
*/
nserror (*provider_update)(const char *provider_name, struct bitmap *ico_bitmap);
};
/**
* Flags which alter the behaviour of the omin search.
*/
enum search_web_omni_flags {
/** no changes to default operation */
SEARCH_WEB_OMNI_NONE = 0,
/** The search does not attempt to interpret the url as a url
* before using it as a search term.
*/
SEARCH_WEB_OMNI_SEARCHONLY = 1,
};
/**
* Generate a nsurl from a search term.
*
* This interface obtains a url appropriate for the given search
* term. The flags allow control over the operation. By default the
* operations are:
* - interpret the \a term as a url
* - if missing a scheme as a https: url
* - combined with the search providers url into a url for that provider.
*
* \param term The search term.
* \param flags Flags to control operation.
* \param url_out The ourput url on success.
* \return NSERROR_OK on success or appropriate error code.
*/
nserror search_web_omni(const char *term, enum search_web_omni_flags flags, struct nsurl **url_out);
/**
* obtain the current providers bitmap
*
* obtain the icon representing the current web search provider
*
* \param bitmap_out recives the resulting bitmap which may be NULL
* \return NSERROR_OK on success or NSERROR_INIT_FAILED if not initialised
*/
nserror search_web_get_provider_bitmap(struct bitmap **bitmap_out);
/**
* Change the currently selected web search provider.
*
* \param selection Name of the search provider to select or NULL to
* reselect the current provider
* \return NSERROR_OK on success or appropriate error code.
*/
nserror search_web_select_provider(const char *selection);
/**
* Iterate the search providers, returning their names.
*
* \param from Index to start iteration from. Use -1 to begin iteration.
* Use the value returned from search_web_iterate_providers to
* continue an iteration.
* \param name Pointer to fill in with the search provider name requested.
* \return -1 if there are no more, otherwise the iterator for the next item.
*
* \verbatim
* ssize_t iter = -1;
* const char *name;
* ...
* iter = search_web_iterate_providers(iter, &name);
* while(iter !=-1) {
* do_something_with(name);
* iter = search_web_iterate_providers(iter, &name);
* }
* \endverbatim
*/
ssize_t search_web_iterate_providers(ssize_t iter, const char **name);
/**
* Initialise the web search operations.
*
* \param provider_fname Path to web search providers file.
* \return NSERROR_OK on successful initialisation or appropriate error code.
*/
nserror search_web_init(const char *provider_fname);
/**
* Finalise the web search operations freeing all resources.
*
* \return NSERROR_OK on success or appropriate error code.
*/
nserror search_web_finalise(void);
#endif