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searchbarstatehandler.cpp
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searchbarstatehandler.cpp
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#include "searchbarstatehandler.h"
#include "searchbar.h"
#include "tabwidget.h"
#include <QAbstractItemView>
#include <QMap>
#include <QPointer>
class SearchBarStateHandler::Private {
friend class ::SearchBarStateHandler;
SearchBarStateHandler * const q;
public:
explicit Private( TabWidget* tabWidget, SearchBar* bar, SearchBarStateHandler * qq );
~Private();
void currentViewChanged( QAbstractItemView* view );
void viewDestroyed( QObject* obj )
;
private:
TabWidget* m_tabWidget;
SearchBar* m_searchBar;
QMap<QObject*, boost::shared_ptr<SearchBar::State> > m_viewToState;
QPointer<QAbstractItemView> m_currentView;
};
SearchBarStateHandler::Private::Private( TabWidget* tab, SearchBar* bar, SearchBarStateHandler * qq )
: q( qq ), m_tabWidget( tab ), m_searchBar( bar )
{
assert( m_tabWidget );
assert( m_searchBar );
connect( m_tabWidget, SIGNAL( currentViewChanged( QAbstractItemView* ) ),
q, SLOT( currentViewChanged( QAbstractItemView* ) ) );
}
SearchBarStateHandler::Private::~Private() {}
void SearchBarStateHandler::Private::currentViewChanged( QAbstractItemView* view )
{
assert( view ); // correct?
if ( view == m_currentView )
return;
if ( m_currentView )
m_viewToState[m_currentView] = m_searchBar->state();
m_currentView = view;
//connect exactly once
disconnect( m_currentView, SIGNAL( destroyed( QObject* ) ),
q, SLOT( viewDestroyed( QObject* ) ) );
connect( m_currentView, SIGNAL( destroyed( QObject* ) ),
q, SLOT( viewDestroyed( QObject* ) ) );
if ( m_viewToState.contains( m_currentView ) )
m_searchBar->setState( m_viewToState[m_currentView] );
else
m_searchBar->resetState();
}
void SearchBarStateHandler::Private::viewDestroyed( QObject* obj )
{
assert( obj );
m_viewToState.remove( obj );
if ( m_currentView == obj )
m_currentView = 0;
}
SearchBarStateHandler::SearchBarStateHandler( TabWidget * tabWidget, SearchBar * searchBar, QObject* parent )
: QObject( parent ), d( new Private( tabWidget, searchBar, this ) )
{
}
SearchBarStateHandler::~SearchBarStateHandler() {}
#include "searchbarstatehandler.moc"

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