/* * Copyright 2006-2007 Aaron Seigo * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Library General Public License as * published by the Free Software Foundation; either version 2, or * (at your option) any later version. * * This program 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 Library General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef PLASMA_RUNNERCONTEXT_H #define PLASMA_RUNNERCONTEXT_H #include #include #include #include class KCompletion; class KConfigGroup; namespace Plasma { class QueryMatch; class AbstractRunner; class RunnerContextPrivate; /** * @class RunnerContext plasma/runnercontext.h * * @short The RunnerContext class provides information related to a search, * including the search term, metadata on the search term and collected * matches. */ class PLASMA_EXPORT RunnerContext : public QObject { Q_OBJECT public: enum Type { None = 0, UnknownType = 1, Directory = 2, File = 4, NetworkLocation = 8, Executable = 16, ShellCommand = 32, Help = 64, FileSystem = Directory | File | Executable | ShellCommand }; Q_DECLARE_FLAGS(Types, Type) explicit RunnerContext(QObject *parent = 0); /** * Copy constructor */ RunnerContext(RunnerContext &other, QObject *parent = 0); /** * Assignment operator * @since 4.4 */ RunnerContext &operator=(const RunnerContext &other); ~RunnerContext(); /** * Resets the search term for this object. * This removes all current matches in the process. */ void reset(); /** * Sets the query term for this object and attempts to determine * the type of the search. */ void setQuery(const QString &term); /** * @return the current search query term. */ QString query() const; /** * The type of item the search term might refer to. * @see Type */ Type type() const; /** * The mimetype that the search term refers to, if discoverable. * * @return QString() if the mimetype can not be determined, otherwise * the mimetype of the object being referred to by the search * string. */ QString mimeType() const; /** * @returns true if this context is no longer valid and therefore * matching using it should abort. Most useful as an optimization technique * inside of AbstractRunner subclasses in the match method, e.g.: * * while (.. a possibly large iteration) { * if (!context.isValid()) { * return; * } * * ... some processing ... * } * * While not required to be used within runners, it provies a nice way * to avoid unecessary processing in runners that may run for an extended * period (as measured in 10s of ms) and therefore improve the user experience. * @since 4.2.3 */ bool isValid() const; /** * Appends lists of matches to the list of matches. * * This method is thread safe and causes the matchesChanged() signal to be emitted. * * @return true if matches were added, false if matches were e.g. outdated */ // trueg: what do we need the term for? It is stored in the context anyway! Plus: matches() does not have a term parameter! // plus: it is Q_UNUSED bool addMatches(const QString &term, const QList &matches); /** * Appends a match to the existing list of matches. * * If you are going to be adding multiple matches, use addMatches instead. * * @arg term the search term that this match was generated for. * @arg match the match to add * * @return true if the match was added, false otherwise. */ // trueg: what do we need the term for? It is stored in the context anyway! Plus: matches() does not have a term parameter! // plus: it is Q_UNUSED bool addMatch(const QString &term, const QueryMatch &match); /** * Removes a match from the existing list of matches. * * If you are going to be removing multiple matches, use removeMatches instead. * * @arg matchId the id of match to remove * * @return true if the match was removed, false otherwise. * @since 4.4 */ bool removeMatch(const QString matchId); /** * Removes lists of matches from the existing list of matches. * * This method is thread safe and causes the matchesChanged() signal to be emitted. * * @arg matchIdList the list of matches id to remove * * @return true if at least one match was removed, false otherwise. * @since 4.4 */ bool removeMatches(const QStringList matchIdList); /** * Retrieves all available matches for the current search term. * * @return a list of matches */ QList matches() const; /** * Retrieves a match by id. * * @param id the id of the match to return * @return the match associated with this id, or an invalid QueryMatch object * if the id does not eixst */ QueryMatch match(const QString &id) const; /** * Sets the launch counts for the associated match ids * * If a runner adds a match to this context, the context will check if the * match id has been launched before and increase the matches relevance * correspondingly. In this manner, any front end can implement adaptive search * by sorting items according to relevance. * * @param config the config group where launch data was stored */ void restore(const KConfigGroup &config); /** * @param config the config group where launch data should be stored */ void save(KConfigGroup &config); /** * Run a match using the information from this context * * The context will also keep track of the number of times the match was * launched to sort future matches according to user habits * * @param match the match to run */ void run(const QueryMatch &match); Q_SIGNALS: void matchesChanged(); private: QExplicitlySharedDataPointer d; }; } Q_DECLARE_OPERATORS_FOR_FLAGS(Plasma::RunnerContext::Types) #endif