1 files changed, 239 insertions, 0 deletions
diff --git a/kaddressbook/jumpbuttonbar.cpp b/kaddressbook/jumpbuttonbar.cpp
new file mode 100644
index 000000000..1c8eddbad
--- /dev/null
+++ b/kaddressbook/jumpbuttonbar.cpp
@@ -0,0 +1,239 @@
+/*
+    This file is part of KAddressBook.
+    Copyright (c) 2002 Mike Pilone <mpilone@slac.com>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+    As a special exception, permission is given to link this program
+    with any edition of Qt, and distribute the resulting executable,
+    without including the source code for Qt in the source distribution.
+*/
+
+#include <qapplication.h>
+#include <qbuttongroup.h>
+#include <qevent.h>
+#include <qlayout.h>
+#include <qpushbutton.h>
+#include <qstring.h>
+#include <qstyle.h>
+
+#include <kabc/addressbook.h>
+#include <kabc/field.h>
+#include <kdebug.h>
+#include <kdialog.h>
+#include <klocale.h>
+
+#include "core.h"
+
+#include "jumpbuttonbar.h"
+
+class JumpButton : public QPushButton
+{
+  public:
+    JumpButton( const QString &firstChar, const QString &lastChar,
+                QWidget *parent );
+
+    QString firstChar() const { return mChar; }
+
+  private:
+    QString mChar;
+};
+
+JumpButton::JumpButton( const QString &firstChar, const QString &lastChar,
+                        QWidget *parent )
+  : QPushButton( "", parent ), mChar( firstChar )
+{
+  setToggleButton( true );
+  if ( !lastChar.isEmpty() )
+    setText( QString( "%1 - %2" ).arg( firstChar.upper() ).arg( lastChar.upper() ) );
+  else
+    setText( firstChar.upper() );
+}
+
+JumpButtonBar::JumpButtonBar( KAB::Core *core, QWidget *parent, const char *name )
+  : QWidget( parent, name ), mCore( core )
+{
+  setMinimumSize( 1, 1 );
+
+  QVBoxLayout *layout = new QVBoxLayout( this, 0, 0 );
+  layout->setAlignment( Qt::AlignTop );
+  layout->setAutoAdd( true );
+  layout->setResizeMode( QLayout::FreeResize );
+
+  mGroupBox = new QButtonGroup( 1, Qt::Horizontal, this );
+  mGroupBox->setExclusive( true );
+  mGroupBox->layout()->setSpacing( 0 );
+  mGroupBox->layout()->setMargin( 0 );
+  mGroupBox->setFrameStyle( QFrame::NoFrame );
+}
+
+JumpButtonBar::~JumpButtonBar()
+{
+}
+
+void JumpButtonBar::updateButtons()
+{
+  int currentButton = mGroupBox->selectedId();
+
+  // the easiest way to remove all buttons ;)
+  mButtons.setAutoDelete( true );
+  mButtons.clear();
+  mButtons.setAutoDelete( false );
+
+  QStringList characters;
+
+  // calculate how many buttons are possible
+  QFontMetrics fm = fontMetrics();
+  QPushButton *btn = new QPushButton( "", this );
+  btn->hide();
+  QSize buttonSize = style().sizeFromContents( QStyle::CT_PushButton, btn,
+                     fm.size( ShowPrefix, "X - X") ).
+                     expandedTo( QApplication::globalStrut() );
+  delete btn;
+
+  int buttonHeight = buttonSize.height() + 8;
+  uint possibleButtons = (height() / buttonHeight) - 1;
+
+  QString character;
+  KABC::AddressBook *ab = mCore->addressBook();
+  KABC::AddressBook::Iterator it;
+  for ( it = ab->begin(); it != ab->end(); ++it ) {
+    KABC::Field *field = 0;
+    field = mCore->currentSortField();
+    if ( field ) {
+      setEnabled( true );
+      if ( !field->value( *it ).isEmpty() )
+        character = field->value( *it )[ 0 ].lower();
+    } else {
+      setEnabled( false );
+      return;
+    }
+
+    if ( !character.isEmpty() && !characters.contains( character ) )
+      characters.append( character );
+  }
+
+  sortListLocaleAware( characters );
+
+  if ( characters.count() <= possibleButtons ) {
+    // at first the easy case: all buttons fits in window
+    for ( uint i = 0; i < characters.count(); ++i ) {
+      JumpButton *button = new JumpButton( characters[ i ], QString::null,
+                                           mGroupBox );
+      connect( button, SIGNAL( clicked() ), this, SLOT( letterClicked() ) );
+      mButtons.append( button );
+      button->show();
+    }
+  } else {
+    if ( possibleButtons == 0 ) // to avoid crashes on startup
+      return;
+    int offset = characters.count() / possibleButtons;
+    int odd = characters.count() % possibleButtons;
+    if ( odd )
+      offset++;
+
+    int current = 0;
+    for ( uint i = 0; i < possibleButtons; ++i ) {
+      if ( characters.count() - current == 0 )
+        continue;
+      if ( characters.count() - current <= possibleButtons - i ) {
+        JumpButton *button = new JumpButton( characters[ current ],
+                                             QString::null, mGroupBox );
+        connect( button, SIGNAL( clicked() ), this, SLOT( letterClicked() ) );
+        mButtons.append( button );
+        button->show();
+        current++;
+      } else {
+        int pos = ( current + offset >= (int)characters.count() ?
+                    characters.count() - 1 : current + offset - 1 );
+        QString range;
+        for ( int j = current; j < pos + 1; ++j )
+          range.append( characters[ j ] );
+        JumpButton *button = new JumpButton( characters[ current ],
+                                             characters[ pos ], mGroupBox );
+        connect( button, SIGNAL( clicked() ), this, SLOT( letterClicked() ) );
+        mButtons.append( button );
+        button->show();
+        current = ( i + 1 ) * offset;
+      }
+    }
+  }
+
+  if ( currentButton != -1 )
+    mGroupBox->setButton( currentButton );
+  else
+    mGroupBox->setButton( 0 );
+
+  int maxWidth = 0;
+  QPushButton *button;
+  for ( button = mButtons.first(); button; button = mButtons.next() )
+    maxWidth = QMAX( maxWidth, button->sizeHint().width() );
+
+  setFixedWidth( maxWidth );
+}
+
+void JumpButtonBar::letterClicked()
+{
+  JumpButton *button = (JumpButton*)sender();
+  QString character = button->firstChar();
+
+  emit jumpToLetter( character );
+}
+
+void JumpButtonBar::resizeEvent( QResizeEvent* )
+{
+  updateButtons();
+}
+
+class SortContainer
+{
+  public:
+    SortContainer() {}
+    SortContainer( const QString &string )
+      : mString( string )
+    {
+    }
+
+    bool operator< ( const SortContainer &cnt )
+    {
+      return ( QString::localeAwareCompare( mString, cnt.mString ) < 0 );
+    }
+
+    QString data() const
+    {
+      return mString;
+    }
+
+  private:
+    QString mString;
+};
+
+void JumpButtonBar::sortListLocaleAware( QStringList &list )
+{
+  QValueList<SortContainer> sortList;
+
+  QStringList::ConstIterator it;
+  for ( it = list.begin(); it != list.end(); ++it )
+    sortList.append( SortContainer( *it ) );
+
+  qHeapSort( sortList );
+  list.clear();
+
+  QValueList<SortContainer>::ConstIterator sortIt;
+  for ( sortIt = sortList.begin(); sortIt != sortList.end(); ++sortIt )
+    list.append( (*sortIt).data() );
+}
+
+#include "jumpbuttonbar.moc"