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tdelibs/tdecore/kcompletion.h

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/* This file is part of the KDE libraries
Copyright (C) 1999,2000 Carsten Pfeiffer <pfeiffer@kde.org>
This library 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 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef KCOMPLETION_H
#define KCOMPLETION_H
#include <tqmap.h>
#include <tqptrlist.h>
#include <tqobject.h>
#include <tqstring.h>
#include <tqstringlist.h>
#include <tqguardedptr.h>
#include "kdelibs_export.h"
#include <kglobalsettings.h>
#include <ksortablevaluelist.h>
#include <kshortcut.h>
class KCompTreeNode;
class KCompletionPrivate;
class KCompletionBasePrivate;
class KCompletionMatchesWrapper;
class KCompletionMatches;
class TQPopupMenu;
/**
* @short A generic class for completing QStrings
*
* This class offers easy use of "auto-completion", "manual-completion" or
* "shell completion" on TQString objects. A common use is completing filenames
* or URLs (see KURLCompletion()).
* But it is not limited to URL-completion -- everything should be completable!
* The user should be able to complete email-addresses, telephone-numbers,
* commands, SQL queries, ...
* Every time your program knows what the user can type into an edit-field, you
* should offer completion. With KCompletion, this is very easy, and if you are
* using a line edit widget ( KLineEdit), it is even more easy.
* Basically, you tell a KCompletion object what strings should be completable
* and whenever completion should be invoked, you call makeCompletion().
* KLineEdit and (an editable) KComboBox even do this automatically for you.
*
* KCompletion offers the completed string via the signal match() and
* all matching strings (when the result is ambiguous) via the method
* allMatches().
*
* Notice: auto-completion, shell completion and manual completion work
* slightly differently:
*
* @li auto-completion always returns a complete item as match.
* When more than one matching items are available, it will deliver just
* the first (depending on sorting order) item. Iterating over all matches
* is possible via nextMatch() and previousMatch().
*
* @li popup-completion works in the same way, the only difference being that
* the completed items are not put into the edit-widget, but into a
* separate popup-box.
*
* @li manual completion works the same way as auto-completion, the
* subtle difference is, that it isn't invoked automatically while the user
* is typing, but only when the user presses a special key. The difference
* of manual and auto-completion is therefore only visible in UI classes,
* KCompletion needs to know whether to deliver partial matches
* (shell completion) or whole matches (auto/manual completion), therefore
* KGlobalSettings::CompletionMan and
* KGlobalSettings::CompletionAuto have the exact same effect in
* KCompletion.
*
* @li shell completion works like how shells complete filenames:
* when multiple matches are available, the longest possible string of all
* matches is returned (i.e. only a partial item).
* Iterating over all matching items (complete, not partial) is possible
* via nextMatch() and previousMatch().
*
* You don't have to worry much about that though, KCompletion handles
* that for you, according to the setting setCompletionMode().
* The default setting is globally configured by the user and read
* from KGlobalSettings::completionMode().
*
* A short example:
* \code
* KCompletion completion;
* completion.setOrder( KCompletion::Sorted );
* completion.addItem( "pfeiffer@kde.org" );
* completion.addItem( "coolo@kde.org" );
* completion.addItem( "carpdjih@sp.zrz.tu-berlin.de" );
* completion.addItem( "carp@cs.tu-berlin.de" );
*
* cout << completion.makeCompletion( "ca" ).latin1() << endl;
* \endcode
*
* In shell-completion-mode, this will be "carp"; in auto-completion-
* mode it will be "carp\@cs.tu-berlin.de", as that is alphabetically
* smaller.
* If setOrder was set to Insertion, "carpdjih\@sp.zrz.tu-berlin.de"
* would be completed in auto-completion-mode, as that was inserted before
* "carp\@cs.tu-berlin.de".
*
* You can dynamically update the completable items by removing and adding them
* whenever you want.
* For advanced usage, you could even use multiple KCompletion objects. E.g.
* imagine an editor like kwrite with multiple open files. You could store
* items of each file in a different KCompletion object, so that you know (and
* tell the user) where a completion comes from.
*
* Note: KCompletion does not work with strings that contain 0x0 characters
* (tqunicode nul), as this is used internally as a delimiter.
*
* You may inherit from KCompletion and override makeCompletion() in
* special cases (like reading directories/urls and then supplying the
* contents to KCompletion, as KURLCompletion does), but generally, this is
* not necessary.
*
*
* @author Carsten Pfeiffer <pfeiffer@kde.org>
*/
class TDECORE_EXPORT KCompletion : public TQObject
{
Q_ENUMS( CompOrder )
Q_PROPERTY( CompOrder order READ order WRITE setOrder )
Q_PROPERTY( bool ignoreCase READ ignoreCase WRITE setIgnoreCase )
Q_PROPERTY( TQStringList items READ items WRITE setItems )
Q_OBJECT
public:
/**
* Constants that represent the order in which KCompletion performs
* completion-lookups.
*/
enum CompOrder { Sorted, ///< Use alphabetically sorted order
Insertion, ///< Use order of insertion
Weighted ///< Use weighted order
};
/**
* Constructor, nothing special here :)
*/
KCompletion();
// FIXME: copy constructor, assignment operator...
/**
* Destructor, nothing special here, either.
*/
virtual ~KCompletion();
/**
* Attempts to find an item in the list of available completions,
* that begins with @p string. Will either return the first matching item
* (if there is more than one match) or TQString::null, if no match was
* found.
*
* In the latter case, a sound will be issued, depending on
* isSoundsEnabled().
* If a match was found, it will also be emitted via the signal
* match().
*
* If this is called twice or more often with the same string while no
* items were added or removed in the meantime, all available completions
* will be emitted via the signal #matches().
* This happens only in shell-completion-mode.
*
* @param string the string to complete
* @return the matching item, or TQString::null if there is no matching
* item.
* @see slotMakeCompletion
* @see substringCompletion
*/
virtual TQString makeCompletion( const TQString& string );
/**
* Returns a list of all completion items that contain the given @p string.
* @param string the string to complete
* @return a list of items which all contain @p text as a substring,
* i.e. not necessarily at the beginning.
*
* @see makeCompletion
*/
TQStringList substringCompletion( const TQString& string ) const;
/**
* Returns the next item from the matching-items-list.
* When reaching the beginning, the list is rotated so it will return the
* last match and a sound is issued (depending on isSoundsEnabled()).
* @return the next item from the matching-items-list.
* When there is no match, TQString::null is returned and
* a sound is be issued.
* @see slotPreviousMatch
*/
TQString previousMatch();
/**
* Returns the next item from the matching-items-list.
* When reaching the last item, the list is rotated, so it will return
* the first match and a sound is issued (depending on
* isSoundsEnabled()).
* @return the next item from the matching-items-list. When there is no
* match, TQString::null is returned and a sound is issued
* @see slotNextMatch
*/
TQString nextMatch();
/**
* Returns the last match. Might be useful if you need to check whether
* a completion is different from the last one.
* @return the last match. TQString::null is returned when there is no
* last match.
*/
virtual const TQString& lastMatch() const { return myLastMatch; }
/**
* Returns a list of all items inserted into KCompletion. This is useful
* if you need to save the state of a KCompletion object and restore it
* later.
*
* Important note: when order() == Weighted, then every item in the
* stringlist has its weight appended, delimited by a colon. E.g. an item
* "www.kde.org" might look like "www.kde.org:4", where 4 is the weight.
*
* This is necessary so that you can save the items along with its
* weighting on disk and load them back with setItems(), restoring its
* weight as well. If you really don't want the appended weightings, call
* setOrder( KCompletion::Insertion )
* before calling items().
*
* @return a list of all items
* @see setItems
*/
TQStringList items() const;
/**
* Returns true when the completion object contains no entries.
*/
bool isEmpty() const;
/**
* Sets the completion mode to Auto/Manual, Shell or None.
* If you don't set the mode explicitly, the global default value
* KGlobalSettings::completionMode() is used.
* KGlobalSettings::CompletionNone disables completion.
* @param mode the completion mode
* @see completionMode
* @see KGlobalSettings::completionMode
*/
virtual void setCompletionMode( KGlobalSettings::Completion mode );
/**
* Return the current completion mode.
* May be different from KGlobalSettings::completionMode(), if you
* explicitly called setCompletionMode().
* @return the current completion mode
* @see setCompletionMode
*/
KGlobalSettings::Completion completionMode() const {
return myCompletionMode;
}
/**
* KCompletion offers three different ways in which it offers its items:
* @li in the order of insertion
* @li sorted alphabetically
* @li weighted
*
* Choosing weighted makes KCompletion perform an implicit weighting based
* on how often an item is inserted. Imagine a web browser with a location
* bar, where the user enters URLs. The more often a URL is entered, the
* higher priority it gets.
*
* Note: Setting the order to sorted only affects new inserted items,
* already existing items will stay in the current order. So you probably
* want to call setOrder( Sorted ) before inserting items, when you want
* everything sorted.
*
* Default is insertion order.
* @param order the new order
* @see order
*/
virtual void setOrder( CompOrder order );
/**
* Returns the completion order.
* @return the current completion order.
* @see setOrder
*/
CompOrder order() const { return myOrder; }
/**
* Setting this to true makes KCompletion behave case insensitively.
* E.g. makeCompletion( "CA" ); might return "carp\@cs.tu-berlin.de".
* Default is false (case sensitive).
* @param ignoreCase true to ignore the case
* @see ignoreCase
*/
virtual void setIgnoreCase( bool ignoreCase );
/**
* Return whether KCompletion acts case insensitively or not.
* Default is false (case sensitive).
* @return true if the case will be ignored
* @see setIgnoreCase
*/
bool ignoreCase() const { return myIgnoreCase; }
/**
* Returns a list of all items matching the last completed string.
* Might take some time, when you have LOTS of items.
* @return a list of all matches for the last completed string.
* @see substringCompletion
*/
TQStringList allMatches();
/**
* Returns a list of all items matching @p string.
* @param string the string to match
* @return the list of all matches
*/
TQStringList allMatches( const TQString& string );
/**
* Returns a list of all items matching the last completed string.
* Might take some time, when you have LOTS of items.
* The matches are returned as KCompletionMatches, which also
* keeps the weight of the matches, allowing
* you to modify some matches or merge them with matches
* from another call to allWeightedMatches(), and sort the matches
* after that in order to have the matches ordered correctly.
*
* @return a list of all completion matches
* @see substringCompletion
*/
KCompletionMatches allWeightedMatches();
/**
* Returns a list of all items matching @p string.
* @param string the string to match
* @return a list of all matches
*/
KCompletionMatches allWeightedMatches( const TQString& string );
/**
* Enables/disables playing a sound when
* @li makeCompletion() can't find a match
* @li there is a partial completion (= multiple matches in
* Shell-completion mode)
* @li nextMatch() or previousMatch() hit the last possible
* match -> rotation
*
* For playing the sounds, KNotifyClient() is used.
*
* @param enable true to enable sounds
* @see isSoundsEnabled
*/
virtual void setEnableSounds( bool enable ) { myBeep = enable; }
/**
* Tells you whether KCompletion will play sounds on certain occasions.
* Default is enabled.
* @return true if sounds are enabled
* @see enableSounds
* @see disableSounds
*/
bool isSoundsEnabled() const { return myBeep; }
/**
* Returns true when more than one match is found.
* @return true if there are more than one match
* @see multipleMatches
*/
bool hasMultipleMatches() const { return myHasMultipleMatches; }
#ifndef KDE_NO_COMPAT
/**
* @deprecated
* @see setEnableSounds
*/
void enableSounds() { myBeep = true; }
/**
* @deprecated
* @see setEnableSounds
*/
void disableSounds() { myBeep = false; }
#endif
public slots:
/**
* Attempts to complete "string" and emits the completion via match().
* Same as makeCompletion() (just as a slot).
* @param string the string to complete
* @see makeCompletion
*/
void slotMakeCompletion( const TQString& string ) {
(void) makeCompletion( string );
}
/**
* Searches the previous matching item and emits it via match().
* Same as previousMatch() (just as a slot).
* @see previousMatch
*/
void slotPreviousMatch() {
(void) previousMatch();
}
/**
* Searches the next matching item and emits it via match().
* Same as nextMatch() (just as a slot).
* @see nextMatch
*/
void slotNextMatch() {
(void) nextMatch();
}
// FIXME ###: KDE4: unify the nomenclature. We have insertItems, addItem,
// setItems...
/**
* Inserts @p items into the list of possible completions.
* Does the same as setItems(), but does not call clear() before.
* @param items the items to insert
*/
void insertItems( const TQStringList& items );
/**
* Sets the list of items available for completion. Removes all previous
* items.
*
* Notice: when order() == Weighted, then the weighting is looked up for
* every item in the stringlist. Every item should have ":number" appended,
* where number is an unsigned integer, specifying the weighting.
*
* If you don't like this, call
* setOrder( KCompletion::Insertion )
* before calling setItems().
*
* @param list the list of items that are available for completion
* @see items
*/
virtual void setItems( const TQStringList& list);
/**
* Adds an item to the list of available completions.
* Resets the current item-state ( previousMatch() and nextMatch()
* won't work anymore).
* @param item the item to add
*/
void addItem( const TQString& item);
/**
* Adds an item to the list of available completions.
* Resets the current item-state ( previousMatch() and nextMatch()
* won't work anymore).
*
* Sets the weighting of the item to @p weight or adds it to the current
* weighting if the item is already available. The weight has to be greater
* than 1 to take effect (default weight is 1).
* @param item the item to add
* @param weight the weight of the item, default is 1
*/
void addItem( const TQString& item, uint weight );
/**
* Removes an item from the list of available completions.
* Resets the current item-state ( previousMatch() and nextMatch()
* won't work anymore).
* @param item the item to remove
*/
void removeItem( const TQString& item);
/**
* Removes all inserted items.
*/
virtual void clear();
signals:
/**
* The matching item. Will be emitted by makeCompletion(),
* previousMatch() or nextMatch(). May be TQString::null if there
* is no matching item.
* @param item the match, or TQString::null if there is none
*/
void match( const TQString& item);
/**
* All matching items. Will be emitted by makeCompletion() in shell-
* completion-mode, when the same string is passed to makeCompletion twice
* or more often.
* @param matchlist the list of matches
*/
void matches( const TQStringList& matchlist);
/**
* This signal is emitted, when calling makeCompletion() and more than
* one matching item is found.
* @see hasMultipleMatches
*/
void multipleMatches();
protected:
/**
* This method is called after a completion is found and before the
* matching string is emitted. You can override this method to modify the
* string that will be emitted.
* This is necessary e.g. in KURLCompletion(), where files with spaces
* in their names are shown escaped ("filename\ with\ spaces"), but stored
* unescaped inside KCompletion.
* Never delete that pointer!
*
* Default implementation does nothing.
* @param match the match to process
* @see postProcessMatches
*/
virtual void postProcessMatch( TQString *match ) const { Q_UNUSED(match) }
/**
* This method is called before a list of all available completions is
* emitted via #matches. You can override this method to modify the
* found items before match() or #matches are emitted.
* Never delete that pointer!
*
* Default implementation does nothing.
* @param matches the matches to process
* @see postProcessMatch
*/
virtual void postProcessMatches( TQStringList * matches ) const { Q_UNUSED(matches)}
/**
* This method is called before a list of all available completions is
* emitted via #matches. You can override this method to modify the
* found items before #match() or #matches() are emitted.
* Never delete that pointer!
*
* Default implementation does nothing.
* @param matches the matches to process
* @see postProcessMatch
*/
virtual void postProcessMatches( KCompletionMatches * matches ) const {Q_UNUSED(matches)}
private:
void addWeightedItem( const TQString& );
TQString findCompletion( const TQString& string );
void findAllCompletions( const TQString&,
KCompletionMatchesWrapper *matches,
bool& hasMultipleMatches ) const;
void extractStringsFromNode( const KCompTreeNode *,
const TQString& beginning,
KCompletionMatchesWrapper *matches,
bool addWeight = false ) const;
void extractStringsFromNodeCI( const KCompTreeNode *,
const TQString& beginning,
const TQString& restString,
KCompletionMatchesWrapper *matches) const;
enum BeepMode { NoMatch, PartialMatch, Rotation };
void doBeep( BeepMode ) const;
KGlobalSettings::Completion myCompletionMode;
CompOrder myOrder;
TQString myLastString;
TQString myLastMatch;
TQString myCurrentMatch;
KCompTreeNode * myTreeRoot;
TQStringList myRotations;
bool myBeep;
bool myIgnoreCase;
bool myHasMultipleMatches;
uint myRotationIndex;
protected:
virtual void virtual_hook( int id, void* data );
private:
KCompletionPrivate *d;
};
// some more helper stuff
typedef KSortableValueList<TQString> KCompletionMatchesList;
class KCompletionMatchesPrivate;
/**
* This structure is returned by KCompletion::allWeightedMatches .
* It also keeps the weight of the matches, allowing
* you to modify some matches or merge them with matches
* from another call to allWeightedMatches(), and sort the matches
* after that in order to have the matches ordered correctly
*
* Example (a simplified example of what Konqueror's completion does):
* \code
* KCompletionMatches matches = completion->allWeightedMatches( location );
* if( !location.startsWith( "www." ))
matches += completion->allWeightedmatches( "www." + location" );
* matches.removeDuplicates();
* TQStringList list = matches.list();
* \endcode
*
* @short List for keeping matches returned from KCompletion
*/
class TDECORE_EXPORT KCompletionMatches : public KCompletionMatchesList
{
public:
KCompletionMatches( bool sort );
/**
* @internal
*/
KCompletionMatches( const KCompletionMatchesWrapper& matches );
~KCompletionMatches();
/**
* Removes duplicate matches. Needed only when you merged several matches
* results and there's a possibility of duplicates.
*/
void removeDuplicates();
/**
* Returns the matches as a TQStringList.
* @param sort if false, the matches won't be sorted before the conversion,
* use only if you're sure the sorting is not needed
* @return the list of matches
*/
TQStringList list( bool sort = true ) const;
/**
* If sorting() returns false, the matches aren't sorted by their weight,
* even if true is passed to list().
* @return true if the matches won't be sorted
*/
bool sorting() const {
return _sorting;
}
private:
bool _sorting;
KCompletionMatchesPrivate* d;
};
/**
* An abstract base class for adding a completion feature
* into widgets.
*
* This is a convenience class that provides the basic functions
* needed to add text completion support into widgets. All that
* is required is an implementation for the pure virtual function
* setCompletedText. Refer to KLineEdit or KComboBox
* to see how easily such support can be added using this as a base
* class.
*
* @short An abstract class for adding text completion support to widgets.
* @author Dawit Alemayehu <adawit@kde.org>
*/
class TDECORE_EXPORT KCompletionBase
{
public:
/**
* Constants that represent the items whose short-cut
* key-binding is programmable. The default key-bindings
* for these items are defined in KStdAccel.
*/
enum KeyBindingType {
/**
* Text completion (by default Ctrl-E).
*/
TextCompletion,
/**
* Switch to previous completion (by default Ctrl-Up).
*/
PrevCompletionMatch,
/**
* Switch to next completion (by default Ctrl-Down).
*/
NextCompletionMatch,
/**
* Substring completion (by default Ctrl-T).
*/
SubstringCompletion
};
// Map for the key binding types mentioned above.
typedef TQMap<KeyBindingType, KShortcut> KeyBindingMap;
/**
* Default constructor.
*/
KCompletionBase();
/**
* Destructor.
*/
virtual ~KCompletionBase();
/**
* Returns a pointer to the current completion object.
*
* If the completion object does not exist, it is automatically created and
* by default handles all the completion signals internally unless @p hsig
* is set to false. It is also automatically destroyed when the destructor
* is called. You can change this default behavior using the
* @ref setAutoDeleteCompletionObject and @ref setHandleSignals member
* functions.
*
* See also @ref compObj.
*
* @param hsig if true, handles completion signals internally.
* @return a pointer the completion object.
*/
KCompletion* completionObject( bool hsig = true );
/**
* Sets up the completion object to be used.
*
* This method assigns the completion object and sets it up to automatically
* handle the completion and rotation signals internally. You should use
* this function if you want to share one completion object among your
* widgets or need to use a customized completion object.
*
* The object assigned through this method is not deleted when this object's
* destructor is invoked unless you explicitly call @ref setAutoDeleteCompletionObject
* after calling this method. Be sure to set the bool argument to false, if
* you want to handle the completion signals yourself.
*
* @param compObj a KCompletion() or a derived child object.
* @param hsig if true, handles completion signals internally.
*/
virtual void setCompletionObject( KCompletion* compObj, bool hsig = true );
/**
* Enables this object to handle completion and rotation
* events internally.
*
* This function simply assigns a boolean value that
* indicates whether it should handle rotation and
* completion events or not. Note that this does not
* stop the object from emitting signals when these
* events occur.
*
* @param handle if true, handle completion & rotation internally.
*/
virtual void setHandleSignals( bool handle );
/**
* Returns true if the completion object is deleted
* upon this widget's destruction.
*
* See setCompletionObject() and enableCompletion()
* for details.
*
* @return true if the completion object will be deleted
* automatically
*/
bool isCompletionObjectAutoDeleted() const {
return m_delegate ? m_delegate->isCompletionObjectAutoDeleted() : m_bAutoDelCompObj;
}
/**
* Sets the completion object when this widget's destructor
* is called.
*
* If the argument is set to true, the completion object
* is deleted when this widget's destructor is called.
*
* @param autoDelete if true, delete completion object on destruction.
*/
void setAutoDeleteCompletionObject( bool autoDelete ) {
if ( m_delegate )
m_delegate->setAutoDeleteCompletionObject( autoDelete );
else
m_bAutoDelCompObj = autoDelete;
}
/**
* Sets the widget's ability to emit text completion and
* rotation signals.
*
* Invoking this function with @p enable set to @p false will
* cause the completion & rotation signals not to be emitted.
* However, unlike setting the completion object to @p NULL
* using setCompletionObject, disabling the emition of
* the signals through this method does not affect the current
* completion object.
*
* There is no need to invoke this function by default. When a
* completion object is created through completionObject or
* setCompletionObject, these signals are set to emit
* automatically. Also note that disabling this signals will not
* necessarily interfere with the objects ability to handle these
* events internally. See setHandleSignals.
*
* @param enable if false, disables the emition of completion & rotation signals.
*/
void setEnableSignals( bool enable ) {
if ( m_delegate )
m_delegate->setEnableSignals( enable );
else
m_bEmitSignals = enable;
}
/**
* Returns true if the object handles the signals.
*
* @return true if this signals are handled internally.
*/
bool handleSignals() const { return m_delegate ? m_delegate->handleSignals() : m_bHandleSignals; }
/**
* Returns true if the object emits the signals.
*
* @return true if signals are emitted
*/
bool emitSignals() const { return m_delegate ? m_delegate->emitSignals() : m_bEmitSignals; }
/**
* Sets the type of completion to be used.
*
* The completion modes supported are those defined in
* KGlobalSettings(). See below.
*
* @param mode Completion type:
* @li CompletionNone: Disables completion feature.
* @li CompletionAuto: Attempts to find a match &
* fills-in the remaining text.
* @li CompletionMan: Acts the same as the above
* except the action has to be
* manually triggered through
* pre-defined completion key.
* @li CompletionShell: Mimics the completion feature
* found in typical *nix shell
* environments.
* @li CompletionPopup: Shows all available completions at once,
* in a listbox popping up.
*/
virtual void setCompletionMode( KGlobalSettings::Completion mode );
/**
* Returns the current completion mode.
*
* The return values are of type KGlobalSettings::Completion.
* See setCompletionMode() for details.
*
* @return the completion mode.
*/
KGlobalSettings::Completion completionMode() const {
return m_delegate ? m_delegate->completionMode() : m_iCompletionMode;
}
/**
* Sets the key-binding to be used for manual text
* completion, text rotation in a history list as
* well as a completion list.
*
*
* When the keys set by this function are pressed, a
* signal defined by the inheriting widget will be activated.
* If the default value or 0 is specified by the second
* parameter, then the key-binding as defined in the global
* setting should be used. This method returns false value
* for @p key is negative or the supplied key-binding conflicts
* with the ones set for one of the other features.
*
* NOTE: To use a modifier key (Shift, Ctrl, Alt) as part of
* the key-binding simply simply @p sum up the values of the
* modifier and the actual key. For example, to use CTRL+E as
* a key binding for one of the items, you would simply supply
* @p "Qt::CtrlButton + Qt::Key_E" as the second argument to this
* function.
*
* @param item the feature whose key-binding needs to be set:
* @li TextCompletion the manual completion key-binding.
* @li PrevCompletionMatch the previous match key for multiple completion.
* @li NextCompletionMatch the next match key for for multiple completion.
* @li SubstringCompletion the key for substring completion
* @param key key-binding used to rotate down in a list.
* @return true if key-binding can successfully be set.
* @see getKeyBinding
*/
bool setKeyBinding( KeyBindingType item , const KShortcut& key );
/**
* Returns the key-binding used for the specified item.
*
* This methods returns the key-binding used to activate
* the feature feature given by @p item. If the binding
* contains modifier key(s), the SUM of the modifier key
* and the actual key code are returned.
*
* @param item the item to check
* @return the key-binding used for the feature given by @p item.
* @see setKeyBinding
*/
const KShortcut& getKeyBinding( KeyBindingType item ) const {
return m_delegate ? m_delegate->getKeyBinding( item ) : m_keyMap[ item ];
}
/**
* Sets this object to use global values for key-bindings.
*
* This method changes the values of the key bindings for
* rotation and completion features to the default values
* provided in KGlobalSettings.
*
* NOTE: By default inheriting widgets should uses the
* global key-bindings so that there will be no need to
* call this method.
*/
void useGlobalKeyBindings();
/**
* A pure virtual function that must be implemented by
* all inheriting classes.
*
* This function is intended to allow external completion
* implementations to set completed text appropriately. It
* is mostly relevant when the completion mode is set to
* CompletionAuto and CompletionManual modes. See
* KCompletionBase::setCompletedText.
* Does nothing in CompletionPopup mode, as all available
* matches will be shown in the popup.
*
* @param text the completed text to be set in the widget.
*/
virtual void setCompletedText( const TQString& text ) = 0;
/**
* A pure virtual function that must be implemented by
* all inheriting classes.
* @param items the list of completed items
*/
virtual void setCompletedItems( const TQStringList& items ) = 0;
/**
* Returns a pointer to the completion object.
*
* This method is only different from completionObject()
* in that it does not create a new KCompletion object even if
* the internal pointer is @p NULL. Use this method to get the
* pointer to a completion object when inheriting so that you
* won't inadvertently create it!!
*
* @return the completion object or NULL if one does not exist.
*/
KCompletion* compObj() const { return m_delegate ? m_delegate->compObj() : (KCompletion*) m_pCompObj; }
protected:
/**
* Returns a key-binding map.
*
* This method is the same as getKeyBinding() except it
* returns the whole keymap containing the key-bindings.
*
* @return the key-binding used for the feature given by @p item.
*/
KeyBindingMap getKeyBindings() const { return m_delegate ? m_delegate->getKeyBindings() : m_keyMap; }
/**
* Sets or removes the delegation object. If a delegation object is
* set, all function calls will be forwarded to the delegation object.
* @param delegate the delegation object, or 0 to remove it
*/
void setDelegate( KCompletionBase *delegate );
/**
* Returns the delegation object.
* @return the delegation object, or 0 if there is none
* @see setDelegate()
*/
KCompletionBase *delegate() const { return m_delegate; }
private:
// This method simply sets the autodelete boolean for
// the completion object, the emit signals and handle
// signals internally flags to the provided values.
void setup( bool, bool, bool );
// Flag that determined whether the completion object
// should be deleted when this object is destroyed.
bool m_bAutoDelCompObj;
// Determines whether this widget handles completion signals
// internally or not
bool m_bHandleSignals;
// Determines whether this widget fires rotation signals
bool m_bEmitSignals;
// Stores the completion mode locally.
KGlobalSettings::Completion m_iCompletionMode;
// Pointer to Completion object.
TQGuardedPtr<KCompletion> m_pCompObj;
// Keybindings
KeyBindingMap m_keyMap;
// we may act as a proxy to another KCompletionBase object
KCompletionBase *m_delegate;
// BCI
protected:
virtual void virtual_hook( int id, void* data );
private:
KCompletionBasePrivate *d;
};
#endif // KCOMPLETION_H