add a form widget controller to prepare the pageview to possible changes when the content in a form widget changes

svn path=/trunk/KDE/kdegraphics/okular/; revision=726788

ui/formwidgets.cpp

@@ -15,6 +15,21 @@
 // local includes
 #include "core/form.h"
 
+FormWidgetsController::FormWidgetsController( QObject *parent )
+    : QObject( parent )
+{
+}
+
+FormWidgetsController::~FormWidgetsController()
+{
+}
+
+void FormWidgetsController::signalChanged( FormWidgetIface *w )
+{
+    emit changed( w );
+}
+
+
 FormWidgetIface * FormWidgetFactory::createWidget( Okular::FormField * ff, QWidget * parent )
 {
     FormWidgetIface * widget = 0;
@@ -58,7 +73,7 @@ FormWidgetIface * FormWidgetFactory::createWidget( Okular::FormField * ff, QWidg
 
 
 FormWidgetIface::FormWidgetIface( QWidget * w, Okular::FormField * ff )
-    : m_widget( w ), m_ff( ff )
+    : m_controller( 0 ), m_widget( w ), m_ff( ff ), m_pageItem( 0 )
 {
 }
 
@@ -98,6 +113,21 @@ void FormWidgetIface::setCanBeFilled( bool fill )
     m_widget->setEnabled( fill );
 }
 
+void FormWidgetIface::setPageItem( PageViewItem *pageItem )
+{
+    m_pageItem = pageItem;
+}
+
+PageViewItem* FormWidgetIface::pageItem() const
+{
+    return m_pageItem;
+}
+
+void FormWidgetIface::setFormWidgetsController( FormWidgetsController *controller )
+{
+    m_controller = controller;
+}
+
 
 FormLineEdit::FormLineEdit( Okular::FormFieldText * text, QWidget * parent )
     : QLineEdit( parent ), FormWidgetIface( this, text ), m_form( text )

ui/formwidgets.h

@@ -20,6 +20,7 @@
 #include <kurlrequester.h>
 
 class FormWidgetIface;
+class PageViewItem;
 
 namespace Okular {
 class FormField;
@@ -27,6 +28,22 @@ class FormFieldChoice;
 class FormFieldText;
 }
 
+
+class FormWidgetsController : public QObject
+{
+    Q_OBJECT
+
+    public:
+        FormWidgetsController( QObject *parent = 0 );
+        virtual ~FormWidgetsController();
+
+        void signalChanged( FormWidgetIface *w );
+
+    signals:
+        void changed( FormWidgetIface *w );
+};
+
+
 class FormWidgetFactory
 {
     public:
@@ -46,9 +63,18 @@ class FormWidgetIface
         bool setVisibility( bool visible );
         void setCanBeFilled( bool fill );
 
+        void setPageItem( PageViewItem *pageItem );
+        PageViewItem* pageItem() const;
+
+        void setFormWidgetsController( FormWidgetsController *controller );
+
+    protected:
+        FormWidgetsController * m_controller;
+
     private:
         QWidget * m_widget;
         Okular::FormField * m_ff;
+        PageViewItem * m_pageItem;
 };
 
 

ui/pageview.cpp

@@ -79,7 +79,12 @@ static int pageflags = PagePainter::Accessibility | PagePainter::EnhanceLinks |
 class PageViewPrivate
 {
 public:
+    PageViewPrivate( PageView *qq );
+
+    FormWidgetsController* formWidgetsController();
+
     // the document, pageviewItems and the 'visible cache'
+    PageView *q;
     Okular::Document * document;
     QVector< PageViewItem * > items;
     QLinkedList< PageViewItem * > visibleItems;
@@ -121,6 +126,7 @@ public:
     bool blockPixmapsRequest;           // prevent pixmap requests
     PageViewMessage * messageWindow;    // in pageviewutils.h
     bool m_formsVisible;
+    FormWidgetsController *formsWidgetController;
 
     // drag scroll
     QPoint dragScrollVector;
@@ -151,6 +157,24 @@ public:
     int setting_viewCols;
 };
 
+PageViewPrivate::PageViewPrivate( PageView *qq )
+    : q( qq )
+{
+}
+
+FormWidgetsController* PageViewPrivate::formWidgetsController()
+{
+    if ( !formsWidgetController )
+    {
+        formsWidgetController = new FormWidgetsController();
+        QObject::connect( formsWidgetController, SIGNAL( changed( FormWidgetIface* ) ),
+                          q, SLOT( slotFormWidgetChanged( FormWidgetIface * ) ) );
+    }
+
+    return formsWidgetController;
+}
+
+
 class PageViewWidget : public QWidget
 {
 public:
@@ -244,7 +268,7 @@ PageView::PageView( QWidget *parent, Okular::Document *document )
     : QScrollArea( parent )
 {
     // create and initialize private storage structure
-    d = new PageViewPrivate();
+    d = new PageViewPrivate( this );
     d->document = document;
     d->aRotateClockwise = 0;
     d->aRotateCounterClockwise = 0;
@@ -269,6 +293,7 @@ PageView::PageView( QWidget *parent, Okular::Document *document )
     d->blockPixmapsRequest = false;
     d->messageWindow = new PageViewMessage(this);
     d->m_formsVisible = false;
+    d->formsWidgetController = 0;
     d->aRotateClockwise = 0;
     d->aRotateCounterClockwise = 0;
     d->aRotateOriginal = 0;
@@ -330,6 +355,7 @@ PageView::~PageView()
     QVector< PageViewItem * >::const_iterator dIt = d->items.begin(), dEnd = d->items.end();
     for ( ; dIt != dEnd; ++dIt )
         delete *dIt;
+    delete d->formsWidgetController;
     d->document->removeObserver( this );
     delete d;
 }
@@ -677,6 +703,8 @@ void PageView::notifySetup( const QVector< Okular::Page * > & pageSet, int setup
             FormWidgetIface * w = FormWidgetFactory::createWidget( ff, widget() );
             if ( w )
             {
+                w->setPageItem( item );
+                w->setFormWidgetsController( d->formWidgetsController() );
                 w->setVisibility( d->m_formsVisible );
                 w->setCanBeFilled( d->document->isAllowed( Okular::AllowFillForms ) );
                 item->formWidgets().insert( ff->name(), w );
@@ -3153,6 +3181,10 @@ void PageView::slotToggleForms()
 {
     toggleFormWidgets( !d->m_formsVisible );
 }
+
+void PageView::slotFormWidgetChanged( FormWidgetIface *w )
+{
+}
 //END private SLOTS
 
 #include "pageview.moc"

ui/pageview.h

@@ -35,6 +35,7 @@ class Document;
 class Annotation;
 }
 
+class FormWidgetIface;
 class PageViewPrivate;
 class PageViewWidget;
 
@@ -194,6 +195,7 @@ Q_OBJECT
         void slotRotateOriginal();
         void slotPageSizes( int );
         void slotToggleForms();
+        void slotFormWidgetChanged( FormWidgetIface *w );
 };
 
 #endif