okular/ui/formwidgets.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Pino Toscano <pino@kde.org>                     *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  ***************************************************************************/
   9
  10 #include "formwidgets.h"
  11
  12 #include <qbuttongroup.h>
  13 #include <klineedit.h>
  14 #include <klocale.h>
  15
  16 // local includes
  17 #include "core/form.h"
  18
  19 FormWidgetsController::FormWidgetsController( QObject *parent )
  20     : QObject( parent )
  21 {
  22 }
  23
  24 FormWidgetsController::~FormWidgetsController()
  25 {
  26 }
  27
  28 void FormWidgetsController::signalChanged( FormWidgetIface *w )
  29 {
  30     emit changed( w );
  31 }
  32
  33 void FormWidgetsController::signalAction( Okular::Action *a )
  34 {
  35     emit action( a );
  36 }
  37
  38 QButtonGroup* FormWidgetsController::registerRadioButton( FormWidgetIface* widget, const QList< int >& siblings )
  39 {
  40     if ( !widget->button() )
  41         return 0;
  42
  43     QList< RadioData >::iterator it = m_radios.begin(), itEnd = m_radios.end();
  44     const int id = widget->formField()->id();
  45     for ( ; it != itEnd; ++it )
  46     {
  47         const QList< int >::const_iterator idsIt = qFind( (*it).ids, id );
  48         if ( idsIt != (*it).ids.constEnd() )
  49         {
  50             (*it).group->addButton( widget->button() );
  51             return (*it).group;
  52         }
  53     }
  54     RadioData newdata;
  55     newdata.ids = siblings;
  56     newdata.ids.append( id );
  57     newdata.group = new QButtonGroup();
  58     newdata.group->addButton( widget->button() );
  59     connect( newdata.group, SIGNAL( buttonClicked( QAbstractButton * ) ),
  60              this, SLOT( slotButtonClicked( QAbstractButton * ) ) );
  61     m_radios.append( newdata );
  62     return newdata.group;
  63 }
  64
  65 void FormWidgetsController::dropRadioButtons()
  66 {
  67     QList< RadioData >::iterator it = m_radios.begin(), itEnd = m_radios.end();
  68     for ( ; it != itEnd; ++it )
  69     {
  70         delete (*it).group;
  71     }
  72     m_radios.clear();
  73 }
  74
  75 void FormWidgetsController::slotButtonClicked( QAbstractButton *button )
  76 {
  77     if ( CheckBoxEdit *check = qobject_cast< CheckBoxEdit * >( button ) )
  78         emit changed( check );
  79     else if ( RadioButtonEdit *radio = qobject_cast< RadioButtonEdit * >( button ) )
  80         emit changed( radio );
  81 }
  82
  83
  84 FormWidgetIface * FormWidgetFactory::createWidget( Okular::FormField * ff, QWidget * parent )
  85 {
  86     FormWidgetIface * widget = 0;
  87     switch ( ff->type() )
  88     {
  89         case Okular::FormField::FormButton:
  90         {
  91             Okular::FormFieldButton * ffb = static_cast< Okular::FormFieldButton * >( ff );
  92             switch ( ffb->buttonType() )
  93             {
  94                 case Okular::FormFieldButton::Push:
  95                     widget = new PushButtonEdit( ffb, parent );
  96                     break;
  97                 case Okular::FormFieldButton::CheckBox:
  98                     widget = new CheckBoxEdit( ffb, parent );
  99                     break;
 100                 case Okular::FormFieldButton::Radio:
 101                     widget = new RadioButtonEdit( ffb, parent );
 102                     break;
 103                 default: ;
 104             }
 105             break;
 106         }
 107         case Okular::FormField::FormText:
 108         {
 109             Okular::FormFieldText * fft = static_cast< Okular::FormFieldText * >( ff );
 110             switch ( fft->textType() )
 111             {
 112                 case Okular::FormFieldText::Multiline:
 113                     widget = new TextAreaEdit( fft, parent );
 114                     break;
 115                 case Okular::FormFieldText::Normal:
 116                     widget = new FormLineEdit( fft, parent );
 117                     break;
 118                 case Okular::FormFieldText::FileSelect:
 119                     widget = new FileEdit( fft, parent );
 120                     break;
 121             }
 122             break;
 123         }
 124         case Okular::FormField::FormChoice:
 125         {
 126             Okular::FormFieldChoice * ffc = static_cast< Okular::FormFieldChoice * >( ff );
 127             switch ( ffc->choiceType() )
 128             {
 129                 case Okular::FormFieldChoice::ListBox:
 130                     widget = new ListEdit( ffc, parent );
 131                     break;
 132                 case Okular::FormFieldChoice::ComboBox:
 133                     widget = new ComboEdit( ffc, parent );
 134                     break;
 135             }
 136             break;
 137         }
 138         default: ;
 139     }
 140     return widget;
 141 }
 142
 143
 144 FormWidgetIface::FormWidgetIface( QWidget * w, Okular::FormField * ff )
 145     : m_controller( 0 ), m_widget( w ), m_ff( ff ), m_pageItem( 0 )
 146 {
 147 }
 148
 149 FormWidgetIface::~FormWidgetIface()
 150 {
 151 }
 152
 153 Okular::NormalizedRect FormWidgetIface::rect() const
 154 {
 155     return m_ff->rect();
 156 }
 157
 158 void FormWidgetIface::setWidthHeight( int w, int h )
 159 {
 160     m_widget->resize( w, h );
 161 }
 162
 163 void FormWidgetIface::moveTo( int x, int y )
 164 {
 165     m_widget->move( x, y );
 166 }
 167
 168 bool FormWidgetIface::setVisibility( bool visible )
 169 {
 170     if ( !m_ff->isVisible() )
 171         return false;
 172
 173     bool hadfocus = m_widget->hasFocus();
 174     if ( hadfocus )
 175         m_widget->clearFocus();
 176     m_widget->setVisible( visible );
 177     return hadfocus;
 178 }
 179
 180 void FormWidgetIface::setCanBeFilled( bool fill )
 181 {
 182     if ( m_widget->isEnabled() )
 183     {
 184         m_widget->setEnabled( fill );
 185     }
 186 }
 187
 188 void FormWidgetIface::setPageItem( PageViewItem *pageItem )
 189 {
 190     m_pageItem = pageItem;
 191 }
 192
 193 Okular::FormField* FormWidgetIface::formField() const
 194 {
 195     return m_ff;
 196 }
 197
 198 PageViewItem* FormWidgetIface::pageItem() const
 199 {
 200     return m_pageItem;
 201 }
 202
 203 void FormWidgetIface::setFormWidgetsController( FormWidgetsController *controller )
 204 {
 205     m_controller = controller;
 206 }
 207
 208 QAbstractButton* FormWidgetIface::button()
 209 {
 210     return 0;
 211 }
 212
 213
 214 PushButtonEdit::PushButtonEdit( Okular::FormFieldButton * button, QWidget * parent )
 215     : QPushButton( parent ), FormWidgetIface( this, button ), m_form( button )
 216 {
 217     setText( m_form->caption() );
 218     setEnabled( !m_form->isReadOnly() );
 219     setVisible( m_form->isVisible() );
 220
 221     connect( this, SIGNAL( clicked() ), this, SLOT( slotClicked() ) );
 222 }
 223
 224 void PushButtonEdit::slotClicked()
 225 {
 226     if ( m_form->activationAction() )
 227         m_controller->signalAction( m_form->activationAction() );
 228 }
 229
 230
 231 CheckBoxEdit::CheckBoxEdit( Okular::FormFieldButton * button, QWidget * parent )
 232     : QCheckBox( parent ), FormWidgetIface( this, button ), m_form( button )
 233 {
 234     setText( m_form->caption() );
 235     setEnabled( !m_form->isReadOnly() );
 236
 237     setVisible( m_form->isVisible() );
 238 }
 239
 240 void CheckBoxEdit::setFormWidgetsController( FormWidgetsController *controller )
 241 {
 242     FormWidgetIface::setFormWidgetsController( controller );
 243
 244     const QList< int > siblings = m_form->siblings();
 245     if ( !siblings.isEmpty() )
 246         m_controller->registerRadioButton( this, siblings );
 247
 248     setCheckState( m_form->state() ? Qt::Checked : Qt::Unchecked );
 249
 250     connect( this, SIGNAL( stateChanged( int ) ), this, SLOT( slotStateChanged( int ) ) );
 251 }
 252
 253 QAbstractButton* CheckBoxEdit::button()
 254 {
 255     return this;
 256 }
 257
 258 void CheckBoxEdit::slotStateChanged( int state )
 259 {
 260     m_form->setState( state == Qt::Checked );
 261
 262     if ( !group() )
 263         m_controller->signalChanged( this );
 264 }
 265
 266
 267 RadioButtonEdit::RadioButtonEdit( Okular::FormFieldButton * button, QWidget * parent )
 268     : QRadioButton( parent ), FormWidgetIface( this, button ), m_form( button )
 269 {
 270     setText( m_form->caption() );
 271     setEnabled( !m_form->isReadOnly() );
 272
 273     setVisible( m_form->isVisible() );
 274 }
 275
 276 void RadioButtonEdit::setFormWidgetsController( FormWidgetsController *controller )
 277 {
 278     FormWidgetIface::setFormWidgetsController( controller );
 279
 280     m_controller->registerRadioButton( this, m_form->siblings() );
 281
 282     setChecked( m_form->state() );
 283
 284     connect( this, SIGNAL( toggled( bool ) ), this, SLOT( slotToggled( bool ) ) );
 285 }
 286
 287 QAbstractButton* RadioButtonEdit::button()
 288 {
 289     return this;
 290 }
 291
 292 void RadioButtonEdit::slotToggled( bool checked )
 293 {
 294     m_form->setState( checked );
 295
 296     if ( !group() )
 297         m_controller->signalChanged( this );
 298 }
 299
 300
 301 FormLineEdit::FormLineEdit( Okular::FormFieldText * text, QWidget * parent )
 302     : QLineEdit( parent ), FormWidgetIface( this, text ), m_form( text )
 303 {
 304     int maxlen = m_form->maximumLength();
 305     if ( maxlen >= 0 )
 306         setMaxLength( maxlen );
 307     setAlignment( m_form->textAlignment() );
 308     setText( m_form->text() );
 309     if ( m_form->isPassword() )
 310         setEchoMode( QLineEdit::Password );
 311     setReadOnly( m_form->isReadOnly() );
 312
 313     connect( this, SIGNAL( textEdited( const QString& ) ), this, SLOT( textEdited( const QString& ) ) );
 314     setVisible( m_form->isVisible() );
 315 }
 316
 317 void FormLineEdit::textEdited( const QString& )
 318 {
 319     m_form->setText( text() );
 320
 321     m_controller->signalChanged( this );
 322 }
 323
 324
 325 TextAreaEdit::TextAreaEdit( Okular::FormFieldText * text, QWidget * parent )
 326     : KTextEdit( parent ), FormWidgetIface( this, text ), m_form( text )
 327 {
 328     setAcceptRichText( m_form->isRichText() );
 329     setCheckSpellingEnabled( m_form->canBeSpellChecked() );
 330     setAlignment( m_form->textAlignment() );
 331     setPlainText( m_form->text() );
 332     setReadOnly( m_form->isReadOnly() );
 333
 334     connect( this, SIGNAL( textChanged() ), this, SLOT( slotChanged() ) );
 335     setVisible( m_form->isVisible() );
 336 }
 337
 338 void TextAreaEdit::slotChanged()
 339 {
 340     m_form->setText( toPlainText() );
 341
 342     m_controller->signalChanged( this );
 343 }
 344
 345
 346 FileEdit::FileEdit( Okular::FormFieldText * text, QWidget * parent )
 347     : KUrlRequester( parent ), FormWidgetIface( this, text ), m_form( text )
 348 {
 349     setMode( KFile::File | KFile::ExistingOnly | KFile::LocalOnly );
 350     setFilter( i18n( "*|All Files" ) );
 351     setPath( m_form->text() );
 352     lineEdit()->setAlignment( m_form->textAlignment() );
 353     setEnabled( !m_form->isReadOnly() );
 354
 355     connect( this, SIGNAL( textChanged( const QString& ) ), this, SLOT( slotChanged( const QString& ) ) );
 356     setVisible( m_form->isVisible() );
 357 }
 358
 359 void FileEdit::slotChanged( const QString& )
 360 {
 361     m_form->setText( url().path() );
 362
 363     m_controller->signalChanged( this );
 364 }
 365
 366
 367 ListEdit::ListEdit( Okular::FormFieldChoice * choice, QWidget * parent )
 368     : QListWidget( parent ), FormWidgetIface( this, choice ), m_form( choice )
 369 {
 370     addItems( m_form->choices() );
 371     setSelectionMode( m_form->multiSelect() ? QAbstractItemView::ExtendedSelection : QAbstractItemView::SingleSelection );
 372     setVerticalScrollMode( QAbstractItemView::ScrollPerPixel );
 373     QList< int > selectedItems = m_form->currentChoices();
 374     if ( m_form->multiSelect() )
 375     {
 376         foreach ( int index, selectedItems )
 377             if ( index >= 0 && index < count() )
 378                 item( index )->setSelected( true );
 379     }
 380     else
 381     {
 382         if ( selectedItems.count() == 1 && selectedItems.at(0) >= 0 && selectedItems.at(0) < count() )
 383         {
 384             setCurrentRow( selectedItems.at(0) );
 385             scrollToItem( item( selectedItems.at(0) ) );
 386         }
 387     }
 388     setEnabled( !m_form->isReadOnly() );
 389
 390     connect( this, SIGNAL( itemSelectionChanged() ), this, SLOT( slotSelectionChanged() ) );
 391     setVisible( m_form->isVisible() );
 392 }
 393
 394 void ListEdit::slotSelectionChanged()
 395 {
 396     QList< QListWidgetItem * > selection = selectedItems();
 397     QList< int > rows;
 398     foreach( const QListWidgetItem * item, selection )
 399         rows.append( row( item ) );
 400     m_form->setCurrentChoices( rows );
 401
 402     m_controller->signalChanged( this );
 403 }
 404
 405
 406 ComboEdit::ComboEdit( Okular::FormFieldChoice * choice, QWidget * parent )
 407     : QComboBox( parent ), FormWidgetIface( this, choice ), m_form( choice )
 408 {
 409     addItems( m_form->choices() );
 410     setEditable( true );
 411     lineEdit()->setReadOnly( !m_form->isEditable() );
 412     QList< int > selectedItems = m_form->currentChoices();
 413     if ( selectedItems.count() == 1 && selectedItems.at(0) >= 0 && selectedItems.at(0) < count() )
 414         setCurrentIndex( selectedItems.at(0) );
 415     setEnabled( !m_form->isReadOnly() );
 416
 417     connect( this, SIGNAL( currentIndexChanged( int ) ), this, SLOT( indexChanged( int ) ) );
 418     setVisible( m_form->isVisible() );
 419 }
 420
 421 void ComboEdit::indexChanged( int index )
 422 {
 423     m_form->setCurrentChoices( QList< int >() << index );
 424
 425     m_controller->signalChanged( this );
 426 }
 427
 428
 429 #include "formwidgets.moc"