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tdelibs/kdeui/kcombobox.cpp

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/* This file is part of the KDE libraries
Copyright (c) 2000,2001 Dawit Alemayehu <adawit@kde.org>
Copyright (c) 2000,2001 Carsten Pfeiffer <pfeiffer@kde.org>
Copyright (c) 2000 Stefan Schimanski <1Stein@gmx.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License (LGPL) 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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.
*/
#include <tqclipboard.h>
#include <tqlistbox.h>
#include <tqpopupmenu.h>
#include <tqapplication.h>
#include <kcompletionbox.h>
#include <kcursor.h>
#include <kiconloader.h>
#include <kicontheme.h>
#include <klistviewsearchline.h>
#include <klineedit.h>
#include <klocale.h>
#include <knotifyclient.h>
#include <kpixmapprovider.h>
#include <kstdaccel.h>
#include <kurl.h>
#include <kurldrag.h>
#include <kdebug.h>
#include "kcombobox.h"
#include <stdlib.h> // getenv
class KComboBox::KComboBoxPrivate
{
public:
KComboBoxPrivate() : klineEdit(0L)
{
}
~KComboBoxPrivate()
{
}
KLineEdit *klineEdit;
};
KComboBox::KComboBox( TQWidget *parent, const char *name )
: TQComboBox( parent, name ), d(new KComboBoxPrivate)
{
init();
}
KComboBox::KComboBox( bool rw, TQWidget *parent, const char *name )
: TQComboBox( rw, parent, name ), d(new KComboBoxPrivate)
{
init();
if ( rw )
{
KLineEdit *edit = new KLineEdit( this, "combo lineedit" );
setLineEdit( edit );
}
}
KComboBox::~KComboBox()
{
delete d;
}
void KComboBox::init()
{
// Permanently set some parameters in the parent object.
TQComboBox::setAutoCompletion( false );
// Enable context menu by default if widget
// is editable.
setContextMenuEnabled( true );
}
bool KComboBox::contains( const TQString& _text ) const
{
if ( _text.isEmpty() )
return false;
const int itemCount = count();
for (int i = 0; i < itemCount; ++i )
{
if ( text(i) == _text )
return true;
}
return false;
}
void KComboBox::setAutoCompletion( bool autocomplete )
{
if ( d->klineEdit )
{
if ( autocomplete )
{
d->klineEdit->setCompletionMode( KGlobalSettings::CompletionAuto );
setCompletionMode( KGlobalSettings::CompletionAuto );
}
else
{
d->klineEdit->setCompletionMode( KGlobalSettings::completionMode() );
setCompletionMode( KGlobalSettings::completionMode() );
}
}
}
void KComboBox::setContextMenuEnabled( bool showMenu )
{
if( d->klineEdit )
d->klineEdit->setContextMenuEnabled( showMenu );
}
void KComboBox::setURLDropsEnabled( bool enable )
{
if ( d->klineEdit )
d->klineEdit->setURLDropsEnabled( enable );
}
bool KComboBox::isURLDropsEnabled() const
{
return d->klineEdit && d->klineEdit->isURLDropsEnabled();
}
void KComboBox::setCompletedText( const TQString& text, bool marked )
{
if ( d->klineEdit )
d->klineEdit->setCompletedText( text, marked );
}
void KComboBox::setCompletedText( const TQString& text )
{
if ( d->klineEdit )
d->klineEdit->setCompletedText( text );
}
void KComboBox::makeCompletion( const TQString& text )
{
if( d->klineEdit )
d->klineEdit->makeCompletion( text );
else // read-only combo completion
{
if( text.isNull() || !listBox() )
return;
const int index = listBox()->index( listBox()->tqfindItem( text ) );
if( index >= 0 )
setCurrentItem( index );
}
}
void KComboBox::rotateText( KCompletionBase::KeyBindingType type )
{
if ( d->klineEdit )
d->klineEdit->rotateText( type );
}
// not needed anymore
bool KComboBox::eventFilter( TQObject* o, TQEvent* ev )
{
return TQComboBox::eventFilter( o, ev );
}
void KComboBox::setTrapReturnKey( bool grab )
{
if ( d->klineEdit )
d->klineEdit->setTrapReturnKey( grab );
else
qWarning("KComboBox::setTrapReturnKey not supported with a non-KLineEdit.");
}
bool KComboBox::trapReturnKey() const
{
return d->klineEdit && d->klineEdit->trapReturnKey();
}
void KComboBox::setEditURL( const KURL& url )
{
TQComboBox::setEditText( url.prettyURL() );
}
void KComboBox::insertURL( const KURL& url, int index )
{
TQComboBox::insertItem( url.prettyURL(), index );
}
void KComboBox::insertURL( const TQPixmap& pixmap, const KURL& url, int index )
{
TQComboBox::insertItem( pixmap, url.prettyURL(), index );
}
void KComboBox::changeURL( const KURL& url, int index )
{
TQComboBox::changeItem( url.prettyURL(), index );
}
void KComboBox::changeURL( const TQPixmap& pixmap, const KURL& url, int index )
{
TQComboBox::changeItem( pixmap, url.prettyURL(), index );
}
void KComboBox::setCompletedItems( const TQStringList& items )
{
if ( d->klineEdit )
d->klineEdit->setCompletedItems( items );
}
KCompletionBox * KComboBox::completionBox( bool create )
{
if ( d->klineEdit )
return d->klineEdit->completionBox( create );
return 0;
}
// TQWidget::create() turns off mouse-Tracking which would break auto-hiding
void KComboBox::create( WId id, bool initializeWindow, bool destroyOldWindow )
{
TQComboBox::create( id, initializeWindow, destroyOldWindow );
KCursor::setAutoHideCursor( lineEdit(), true, true );
}
void KComboBox::wheelEvent( TQWheelEvent *ev )
{
// Not necessary anymore
TQComboBox::wheelEvent( ev );
}
void KComboBox::setLineEdit( TQLineEdit *edit )
{
if ( !editable() && edit &&
!qstrcmp( edit->className(), "TQLineEdit" ) )
{
// uic generates code that creates a read-only KComboBox and then
// calls combo->setEditable( true ), which causes TQComboBox to set up
// a dumb TQLineEdit instead of our nice KLineEdit.
// As some KComboBox features rely on the KLineEdit, we reject
// this order here.
delete edit;
edit = new KLineEdit( this, "combo edit" );
}
TQComboBox::setLineEdit( edit );
d->klineEdit = tqt_dynamic_cast<KLineEdit*>( edit );
setDelegate( d->klineEdit );
// Connect the returnPressed signal for both Q[K]LineEdits'
if (edit)
connect( edit, TQT_SIGNAL( returnPressed() ), TQT_SIGNAL( returnPressed() ));
if ( d->klineEdit )
{
// someone calling KComboBox::setEditable( false ) destroys our
// lineedit without us noticing. And KCompletionBase::delegate would
// be a dangling pointer then, so prevent that. Note: only do this
// when it is a KLineEdit!
connect( edit, TQT_SIGNAL( destroyed() ), TQT_SLOT( lineEditDeleted() ));
connect( d->klineEdit, TQT_SIGNAL( returnPressed( const TQString& )),
TQT_SIGNAL( returnPressed( const TQString& ) ));
connect( d->klineEdit, TQT_SIGNAL( completion( const TQString& )),
TQT_SIGNAL( completion( const TQString& )) );
connect( d->klineEdit, TQT_SIGNAL( substringCompletion( const TQString& )),
TQT_SIGNAL( substringCompletion( const TQString& )) );
connect( d->klineEdit,
TQT_SIGNAL( textRotation( KCompletionBase::KeyBindingType )),
TQT_SIGNAL( textRotation( KCompletionBase::KeyBindingType )) );
connect( d->klineEdit,
TQT_SIGNAL( completionModeChanged( KGlobalSettings::Completion )),
TQT_SIGNAL( completionModeChanged( KGlobalSettings::Completion)));
connect( d->klineEdit,
TQT_SIGNAL( aboutToShowContextMenu( TQPopupMenu * )),
TQT_SIGNAL( aboutToShowContextMenu( TQPopupMenu * )) );
connect( d->klineEdit,
TQT_SIGNAL( completionBoxActivated( const TQString& )),
TQT_SIGNAL( activated( const TQString& )) );
}
}
void KComboBox::setCurrentItem( const TQString& item, bool insert, int index )
{
int sel = -1;
const int itemCount = count();
for (int i = 0; i < itemCount; ++i)
{
if (text(i) == item)
{
sel = i;
break;
}
}
if (sel == -1 && insert)
{
insertItem(item, index);
if (index >= 0)
sel = index;
else
sel = count() - 1;
}
setCurrentItem(sel);
}
void KComboBox::lineEditDeleted()
{
// yes, we need those ugly casts due to the multiple inheritance
// sender() is guaranteed to be a KLineEdit (see the connect() to the
// destroyed() signal
const KCompletionBase *base = static_cast<const KCompletionBase*>( static_cast<const KLineEdit*>( sender() ));
// is it our delegate, that is destroyed?
if ( base == delegate() )
setDelegate( 0L );
}
// *********************************************************************
// *********************************************************************
class KHistoryCombo::KHistoryComboPrivate
{
public:
KHistoryComboPrivate() : bHistoryEditorEnabled(false)
{
}
~KHistoryComboPrivate()
{
}
bool bHistoryEditorEnabled;
};
// we are always read-write
KHistoryCombo::KHistoryCombo( TQWidget *parent, const char *name )
: KComboBox( true, parent, name ), d(new KHistoryComboPrivate)
{
init( true ); // using completion
}
// we are always read-write
KHistoryCombo::KHistoryCombo( bool useCompletion,
TQWidget *parent, const char *name )
: KComboBox( true, parent, name ), d(new KHistoryComboPrivate)
{
init( useCompletion );
}
void KHistoryCombo::init( bool useCompletion )
{
// Set a default history size to something reasonable, Qt sets it to INT_MAX by default
setMaxCount( 50 );
if ( useCompletion )
completionObject()->setOrder( KCompletion::Weighted );
setInsertionPolicy( NoInsertion );
myIterateIndex = -1;
myRotated = false;
myPixProvider = 0L;
// obey HISTCONTROL setting
TQCString histControl = getenv("HISTCONTROL");
if ( histControl == "ignoredups" || histControl == "ignoreboth" )
setDuplicatesEnabled( false );
connect( this, TQT_SIGNAL(aboutToShowContextMenu(TQPopupMenu*)),
TQT_SLOT(addContextMenuItems(TQPopupMenu*)) );
connect( this, TQT_SIGNAL( activated(int) ), TQT_SLOT( slotReset() ));
connect( this, TQT_SIGNAL( returnPressed(const TQString&) ), TQT_SLOT(slotReset()));
}
KHistoryCombo::~KHistoryCombo()
{
delete myPixProvider;
}
void KHistoryCombo::setHistoryItems( TQStringList items,
bool setCompletionList )
{
KComboBox::clear();
// limit to maxCount()
const int itemCount = items.count();
const int toRemove = itemCount - maxCount();
if (toRemove >= itemCount) {
items.clear();
} else {
for (int i = 0; i < toRemove; ++i)
items.pop_front();
}
insertItems( items );
if ( setCompletionList && useCompletion() ) {
// we don't have any weighting information here ;(
KCompletion *comp = completionObject();
comp->setOrder( KCompletion::Insertion );
comp->setItems( items );
comp->setOrder( KCompletion::Weighted );
}
clearEdit();
}
TQStringList KHistoryCombo::historyItems() const
{
TQStringList list;
const int itemCount = count();
for ( int i = 0; i < itemCount; ++i )
list.append( text( i ) );
return list;
}
void KHistoryCombo::clearHistory()
{
const TQString temp = currentText();
KComboBox::clear();
if ( useCompletion() )
completionObject()->clear();
setEditText( temp );
}
void KHistoryCombo::addContextMenuItems( TQPopupMenu* menu )
{
if ( menu )
{
menu->insertSeparator();
if (d->bHistoryEditorEnabled) {
int idedit = menu->insertItem( SmallIconSet("edit"), i18n("&Edit History..."), this, TQT_SLOT( slotEdit()) );
menu->setItemEnabled(idedit, count());
}
int id = menu->insertItem( SmallIconSet("history_clear"), i18n("Clear &History"), this, TQT_SLOT( slotClear()));
if (!count())
menu->setItemEnabled(id, false);
}
}
void KHistoryCombo::addToHistory( const TQString& item )
{
if ( item.isEmpty() || (count() > 0 && item == text(0) )) {
return;
}
bool wasCurrent = false;
// remove all existing items before adding
if ( !duplicatesEnabled() ) {
int i = 0;
int itemCount = count();
while ( i < itemCount ) {
if ( text( i ) == item ) {
if ( !wasCurrent )
wasCurrent = ( i == currentItem() );
removeItem( i );
--itemCount;
} else {
++i;
}
}
}
// now add the item
if ( myPixProvider )
insertItem( myPixProvider->pixmapFor(item, KIcon::SizeSmall), item, 0);
else
insertItem( item, 0 );
if ( wasCurrent )
setCurrentItem( 0 );
const bool useComp = useCompletion();
const int last = count() - 1; // last valid index
const int mc = maxCount();
const int stopAt = QMAX(mc, 0);
for (int rmIndex = last; rmIndex >= stopAt; --rmIndex) {
// remove the last item, as long as we are longer than maxCount()
// remove the removed item from the completionObject if it isn't
// anymore available at all in the combobox.
const TQString rmItem = text( rmIndex );
removeItem( rmIndex );
if ( useComp && !contains( rmItem ) )
completionObject()->removeItem( rmItem );
}
if ( useComp )
completionObject()->addItem( item );
}
bool KHistoryCombo::removeFromHistory( const TQString& item )
{
if ( item.isEmpty() )
return false;
bool removed = false;
const TQString temp = currentText();
int i = 0;
int itemCount = count();
while ( i < itemCount ) {
if ( item == text( i ) ) {
removed = true;
removeItem( i );
--itemCount;
} else {
++i;
}
}
if ( removed && useCompletion() )
completionObject()->removeItem( item );
setEditText( temp );
return removed;
}
void KHistoryCombo::rotateUp()
{
// save the current text in the lineedit
if ( myIterateIndex == -1 )
myText = currentText();
++myIterateIndex;
// skip duplicates/empty items
const int last = count() - 1; // last valid index
const TQString currText = currentText();
while ( myIterateIndex < last &&
(currText == text( myIterateIndex ) ||
text( myIterateIndex ).isEmpty()) )
++myIterateIndex;
if ( myIterateIndex >= count() ) {
myRotated = true;
myIterateIndex = -1;
// if the typed text is the same as the first item, skip the first
if ( count() > 0 && myText == text(0) )
myIterateIndex = 0;
setEditText( myText );
}
else
setEditText( text( myIterateIndex ));
}
void KHistoryCombo::rotateDown()
{
// save the current text in the lineedit
if ( myIterateIndex == -1 )
myText = currentText();
--myIterateIndex;
const TQString currText = currentText();
// skip duplicates/empty items
while ( myIterateIndex >= 0 &&
(currText == text( myIterateIndex ) ||
text( myIterateIndex ).isEmpty()) )
--myIterateIndex;
if ( myIterateIndex < 0 ) {
if ( myRotated && myIterateIndex == -2 ) {
myRotated = false;
myIterateIndex = count() - 1;
setEditText( text(myIterateIndex) );
}
else { // bottom of history
if ( myIterateIndex == -2 ) {
KNotifyClient::event( (int)winId(), KNotifyClient::notification,
i18n("No further item in the history."));
}
myIterateIndex = -1;
if ( currentText() != myText )
setEditText( myText );
}
}
else
setEditText( text( myIterateIndex ));
}
void KHistoryCombo::keyPressEvent( TQKeyEvent *e )
{
KKey event_key( e );
// going up in the history, rotating when reaching TQListBox::count()
if ( KStdAccel::rotateUp().contains(event_key) )
rotateUp();
// going down in the history, no rotation possible. Last item will be
// the text that was in the lineedit before Up was called.
else if ( KStdAccel::rotateDown().contains(event_key) )
rotateDown();
else
KComboBox::keyPressEvent( e );
}
void KHistoryCombo::wheelEvent( TQWheelEvent *ev )
{
// Pass to poppable listbox if it's up
TQListBox* const lb = listBox();
if ( lb && lb->isVisible() )
{
TQApplication::sendEvent( lb, ev );
return;
}
// Otherwise make it change the text without emitting activated
if ( ev->delta() > 0 ) {
rotateUp();
} else {
rotateDown();
}
ev->accept();
}
void KHistoryCombo::slotReset()
{
myIterateIndex = -1;
myRotated = false;
}
void KHistoryCombo::setPixmapProvider( KPixmapProvider *prov )
{
if ( myPixProvider == prov )
return;
delete myPixProvider;
myPixProvider = prov;
// re-insert all the items with/without pixmap
// I would prefer to use changeItem(), but that doesn't honor the pixmap
// when using an editable combobox (what we do)
if ( count() > 0 ) {
TQStringList items( historyItems() );
clear();
insertItems( items );
}
}
void KHistoryCombo::insertItems( const TQStringList& items )
{
TQStringList::ConstIterator it = items.constBegin();
const TQStringList::ConstIterator itEnd = items.constEnd();
while ( it != itEnd ) {
const TQString item = *it;
if ( !item.isEmpty() ) { // only insert non-empty items
if ( myPixProvider )
insertItem( myPixProvider->pixmapFor(item, KIcon::SizeSmall),
item );
else
insertItem( item );
}
++it;
}
}
void KHistoryCombo::slotClear()
{
clearHistory();
emit cleared();
}
void KHistoryCombo::slotEdit()
{
KHistoryComboEditor dlg( historyItems(), this );
connect( &dlg, TQT_SIGNAL( removeFromHistory(const TQString&) ), TQT_SLOT( slotRemoveFromHistory(const TQString&)) );
dlg.exec();
}
void KHistoryCombo::slotRemoveFromHistory(const TQString &entry)
{
removeFromHistory(entry);
emit removed(entry);
}
void KHistoryCombo::setHistoryEditorEnabled( bool enable )
{
d->bHistoryEditorEnabled = enable;
}
bool KHistoryCombo::isHistoryEditorEnabled() const
{
return d->bHistoryEditorEnabled;
}
void KComboBox::virtual_hook( int id, void* data )
{ KCompletionBase::virtual_hook( id, data ); }
void KHistoryCombo::virtual_hook( int id, void* data )
{ KComboBox::virtual_hook( id, data ); }
void KHistoryComboEditor::virtual_hook( int id, void* data )
{ KDialogBase::virtual_hook( id, data ); }
KHistoryComboEditor::KHistoryComboEditor( const TQStringList& entries, TQWidget *parent )
: KDialogBase( parent, "khistorycomboeditor", true, i18n( "History Editor" ),
KDialogBase::Close | KDialogBase::User1, KDialogBase::User1, true,
KGuiItem( i18n( "&Delete Entry" ), "editdelete") ), d(0)
{
TQVBox* box = new TQVBox( this );
box->setSpacing( KDialog::spacingHint() );
setMainWidget( box );
new TQLabel( i18n( "This dialog allows you to delete unwanted history items." ), box );
// Add searchline
TQHBox* searchbox = new TQHBox( box );
searchbox->setSpacing( KDialog::spacingHint() );
TQToolButton *clearSearch = new TQToolButton(searchbox);
clearSearch->setTextLabel(i18n("Clear Search"), true);
clearSearch->setIconSet(SmallIconSet(TQApplication::reverseLayout() ? "clear_left" : "locationbar_erase"));
TQLabel* slbl = new TQLabel(i18n("&Search:"), searchbox);
KListViewSearchLine* listViewSearch = new KListViewSearchLine(searchbox);
slbl->setBuddy(listViewSearch);
connect(clearSearch, TQT_SIGNAL(pressed()), listViewSearch, TQT_SLOT(clear()));
// Add ListView
m_pListView = new KListView( box );
listViewSearch->setListView(m_pListView);
m_pListView->setAllColumnsShowFocus(true);
m_pListView->header()->hide();
m_pListView->addColumn("");
m_pListView->setRenameable( 0 );
box->setStretchFactor( m_pListView, 1 );
TQStringList newlist = entries;
for ( TQStringList::Iterator it = newlist.begin(); it != newlist.end(); ++it ) {
new TQListViewItem( m_pListView, *it );
}
m_pListView->setMinimumSize( m_pListView->tqsizeHint() );
connect( m_pListView, TQT_SIGNAL( selectionChanged( TQListViewItem * ) ),
this, TQT_SLOT( slotSelectionChanged( TQListViewItem * ) ) );
enableButton( KDialogBase::User1, false );
resize( tqsizeHint() );
}
KHistoryComboEditor::~KHistoryComboEditor()
{
}
void KHistoryComboEditor::slotUser1() // Delete button
{
TQListViewItem *item = m_pListView->selectedItem();
if ( item ) {
emit removeFromHistory( item->text(0) );
m_pListView->takeItem( item );
enableButton( KDialogBase::User1, false );
}
}
void KHistoryComboEditor::slotSelectionChanged( TQListViewItem * item )
{
enableButton( KDialogBase::User1, item );
}
#include "kcombobox.moc"
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