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Diffstat (limited to 'examples/checklists/checklists.cpp')
| -rw-r--r-- | examples/checklists/checklists.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/examples/checklists/checklists.cpp b/examples/checklists/checklists.cpp new file mode 100644 index 0000000..fd17d09 --- /dev/null +++ b/examples/checklists/checklists.cpp @@ -0,0 +1,162 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include "checklists.h" + +#include <qlistview.h> +#include <qvbox.h> +#include <qlabel.h> +#include <qvaluelist.h> +#include <qstring.h> +#include <qpushbutton.h> +#include <qlayout.h> + +/* + * Constructor + * + * Create all child widgets of the CheckList Widget + */ + +CheckLists::CheckLists( QWidget *parent, const char *name ) + : QWidget( parent, name ) +{ + QHBoxLayout *lay = new QHBoxLayout( this ); + lay->setMargin( 5 ); + + // create a widget which layouts its childs in a column + QVBoxLayout *vbox1 = new QVBoxLayout( lay ); + vbox1->setMargin( 5 ); + + // First child: a Label + vbox1->addWidget( new QLabel( "Check some items!", this ) ); + + // Second child: the ListView + lv1 = new QListView( this ); + vbox1->addWidget( lv1 ); + lv1->addColumn( "Items" ); + lv1->setRootIsDecorated( TRUE ); + + // create a list with 4 ListViewItems which will be parent items of other ListViewItems + QValueList<QListViewItem *> parentList; + + parentList.append( new QCheckListItem( lv1, "Parent Item 1", QCheckListItem::CheckBoxController ) ); + parentList.append( new QCheckListItem( lv1, "Parent Item 2", QCheckListItem::CheckBoxController ) ); + parentList.append( new QCheckListItem( lv1, "Parent Item 3", QCheckListItem::CheckBoxController ) ); + parentList.append( new QCheckListItem( lv1, "Parent Item 4", QCheckListItem::CheckBoxController ) ); + + QListViewItem *item = 0; + unsigned int num = 1; + // go through the list of parent items... + for ( QValueList<QListViewItem*>::Iterator it = parentList.begin(); it != parentList.end(); + ( *it )->setOpen( TRUE ), ++it, num++ ) { + item = *it; + // ...and create 5 checkable child ListViewItems for each parent item + for ( unsigned int i = 1; i <= 5; i++ ) + (void)new QCheckListItem( item, QString( "%1. Child of Parent %2" ).arg( i ).arg( num ), QCheckListItem::CheckBox ); + } + + // Create another widget for layouting + QVBoxLayout *tmp = new QVBoxLayout( lay ); + tmp->setMargin( 5 ); + + // create a pushbutton + QPushButton *copy1 = new QPushButton( " -> ", this ); + tmp->addWidget( copy1 ); + copy1->setMaximumWidth( copy1->sizeHint().width() ); + // connect the SIGNAL clicked() of the pushbutton with the SLOT copy1to2() + connect( copy1, SIGNAL( clicked() ), this, SLOT( copy1to2() ) ); + + // another widget for layouting + QVBoxLayout *vbox2 = new QVBoxLayout( lay ); + vbox2->setMargin( 5 ); + + // and another label + vbox2->addWidget( new QLabel( "Check one item!", this ) ); + + // create the second listview + lv2 = new QListView( this ); + vbox2->addWidget( lv2 ); + lv2->addColumn( "Items" ); + lv2->setRootIsDecorated( TRUE ); + + // another widget needed for layouting only + tmp = new QVBoxLayout( lay ); + tmp->setMargin( 5 ); + + // create another pushbutton... + QPushButton *copy2 = new QPushButton( " -> ", this ); + lay->addWidget( copy2 ); + copy2->setMaximumWidth( copy2->sizeHint().width() ); + // ...and connect its clicked() SIGNAL to the copy2to3() SLOT + connect( copy2, SIGNAL( clicked() ), this, SLOT( copy2to3() ) ); + + tmp = new QVBoxLayout( lay ); + tmp->setMargin( 5 ); + + // and create a label which will be at the right of the window + label = new QLabel( "No Item yet...", this ); + tmp->addWidget( label ); +} + +/* + * SLOT copy1to2() + * + * Copies all checked ListViewItems from the first ListView to + * the second one, and inserts them as Radio-ListViewItem. + */ + +void CheckLists::copy1to2() +{ + // create an iterator which operates on the first ListView + QListViewItemIterator it( lv1 ); + + lv2->clear(); + + // Insert first a controller Item into the second ListView. Always if Radio-ListViewItems + // are inserted into a Listview, the parent item of these MUST be a controller Item! + QCheckListItem *item = new QCheckListItem( lv2, "Controller", QCheckListItem::Controller ); + item->setOpen( TRUE ); + + // iterate through the first ListView... + for ( ; it.current(); ++it ) + // ...check state of childs, and... + if ( it.current()->parent() ) + // ...if the item is checked... + if ( ( (QCheckListItem*)it.current() )->isOn() ) + // ...insert a Radio-ListViewItem with the same text into the second ListView + (void)new QCheckListItem( item, it.current()->text( 0 ), QCheckListItem::RadioButton ); + + if ( item->firstChild() ) + ( ( QCheckListItem* )item->firstChild() )->setOn( TRUE ); +} + +/* + * SLOT copy2to3() + * + * Copies the checked item of the second ListView into the + * Label at the right. + */ + +void CheckLists::copy2to3() +{ + // create an iterator which operates on the second ListView + QListViewItemIterator it( lv2 ); + + label->setText( "No Item checked" ); + + // iterate through the second ListView... + for ( ; it.current(); ++it ) + // ...check state of childs, and... + if ( it.current()->parent() ) + // ...if the item is checked... + if ( ( (QCheckListItem*)it.current() )->isOn() ) + // ...set the text of the item to the label + label->setText( it.current()->text( 0 ) ); +} + |