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Diffstat (limited to 'qtjava/javalib/examples/lineedits/LineEdits.java')
| -rw-r--r-- | qtjava/javalib/examples/lineedits/LineEdits.java | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/qtjava/javalib/examples/lineedits/LineEdits.java b/qtjava/javalib/examples/lineedits/LineEdits.java new file mode 100644 index 00000000..ce79891f --- /dev/null +++ b/qtjava/javalib/examples/lineedits/LineEdits.java @@ -0,0 +1,225 @@ +/*************************************************************************** +* $Id$ +** +* Copyright (C) 1992-2000 Trolltech AS. All rights reserved. +** +* This file is part of an example program for Qt. This example +* program may be used, distributed and modified without limitation. +** +****************************************************************************/ +import org.kde.qt.*; + +class LineEdits extends QGroupBox +{ +protected QLineEdit lined1, lined2, lined3, lined4; +protected QComboBox combo1, combo2, combo3, combo4; + + + + +/* + Constructor + * + Creates child widgets of the LineEdits widget + */ + +LineEdits( ) +{ + this(null, null); +} + +LineEdits( QWidget parent, String name ) +{ + super( 0, Horizontal, "Line edits", parent, name ); + setMargin( 10 ); + + QVBoxLayout box = new QVBoxLayout( layout() ); + + QHBoxLayout row1 = new QHBoxLayout( box ); + row1.setMargin( 5 ); + + // Create a Label + QLabel label = new QLabel( "Echo Mode: ", this); + row1.addWidget( label ); + + // Create a Combobox with three items... + combo1 = new QComboBox( false, this ); + row1.addWidget( combo1 ); + combo1.insertItem( "Normal", -1 ); + combo1.insertItem( "Password", -1 ); + combo1.insertItem( "No Echo", -1 ); + // ...and connect the activated() SIGNAL with the slotEchoChanged() SLOT to be able + // to react when an item is selected + connect( combo1, SIGNAL(" activated( int )"), this, SLOT(" slotEchoChanged( int )") ); + + // insert the first LineEdit + lined1 = new QLineEdit( this ); + box.addWidget( lined1 ); + + // another widget which is used for layouting + QHBoxLayout row2 = new QHBoxLayout( box ); + row2.setMargin( 5 ); + + // and the second label + label = new QLabel( "Validator: ", this ); + row2.addWidget( label ); + + // A second Combobox with again three items... + combo2 = new QComboBox( false, this ); + row2.addWidget( combo2 ); + combo2.insertItem( "No Validator", -1 ); + combo2.insertItem( "Integer Validator", -1 ); + combo2.insertItem( "Double Validator", -1 ); + // ...and again the activated() SIGNAL gets connected with a SLOT + connect( combo2, SIGNAL(" activated( int )"), this, SLOT(" slotValidatorChanged( int )") ); + + // and the second LineEdit + lined2 = new QLineEdit( this ); + box.addWidget( lined2 ); + + // yet another widget which is used for layouting + QHBoxLayout row3 = new QHBoxLayout( box ); + row3.setMargin( 5 ); + + // we need a label for this too + label = new QLabel( "Alignment: ", this ); + row3.addWidget( label ); + + // A combo box for setting alignment + combo3 = new QComboBox( false, this ); + row3.addWidget( combo3 ); + combo3.insertItem( "Left", -1 ); + combo3.insertItem( "Centered", -1 ); + combo3.insertItem( "Right", -1 ); + // ...and again the activated() SIGNAL gets connected with a SLOT + connect( combo3, SIGNAL(" activated( int )"), this, SLOT(" slotAlignmentChanged( int )") ); + + // and the third lineedit + lined3 = new QLineEdit( this ); + box.addWidget( lined3 ); + + // last widget used for layouting + QHBox row4 = new QHBox( this ); + box.addWidget( row4 ); + row4.setMargin( 5 ); + + // last label + new QLabel( "Read-Only: ", row4 ); + + // A combo box for setting alignment + combo4 = new QComboBox( false, row4 ); + combo4.insertItem( "False", -1 ); + combo4.insertItem( "True", -1 ); + // ...and again the activated() SIGNAL gets connected with a SLOT + connect( combo4, SIGNAL(" activated( int )"), this, SLOT(" slotReadOnlyChanged( int )") ); + + // and the last lineedit + lined4 = new QLineEdit( this ); + box.addWidget( lined4 ); + + // give the first LineEdit the focus at the beginning + lined1.setFocus(); +} + +/* + SLOT slotEchoChanged( int i ) + * + i contains the number of the item which the user has been chosen in the + first Combobox. According to this value, we set the Echo-Mode for the + first LineEdit. + */ + +void slotEchoChanged( int i ) +{ + switch ( i ) { + case 0: + lined1.setEchoMode( QLineEdit.Normal ); + break; + case 1: + lined1.setEchoMode( QLineEdit.Password ); + break; + case 2: + lined1.setEchoMode( QLineEdit.NoEcho ); + break; + } + + lined1.setFocus(); +} + +/* + SLOT slotValidatorChanged( int i ) + * + i contains the number of the item which the user has been chosen in the + second Combobox. According to this value, we set a validator for the + second LineEdit. A validator checks in a LineEdit each character which + the user enters and accepts it if it is valid, else the character gets + ignored and not inserted into the lineedit. + */ + +void slotValidatorChanged( int i ) +{ + switch ( i ) { + case 0: + lined2.setValidator( null ); + break; + case 1: + lined2.setValidator( new QIntValidator( lined2 ) ); + break; + case 2: + lined2.setValidator( new QDoubleValidator( -999.0, 999.0, 2, + lined2 ) ); + break; + } + + lined2.setText( "" ); + lined2.setFocus(); +} + + +/* + SLOT slotAlignmentChanged( int i ) + * + i contains the number of the item which the user has been chosen in + the third Combobox. According to this value, we set an alignment + third LineEdit. + */ + +void slotAlignmentChanged( int i ) +{ + switch ( i ) { + case 0: + lined3.setAlignment( QLineEdit.AlignLeft ); + break; + case 1: + lined3.setAlignment( QLineEdit.AlignCenter ); + break; + case 2: + lined3.setAlignment( QLineEdit.AlignRight ); + break; + } + + lined3.setFocus(); +} + + +/* + SLOT slotReadOnlyChanged( int i ) + * + i contains the number of the item which the user has been chosen in + the fourth Combobox. According to this value, we toggle read-only. + */ + +void slotReadOnlyChanged( int i ) +{ + switch ( i ) { + case 0: + lined4.setReadOnly( false ); + break; + case 1: + lined4.setReadOnly( true ); + break; + } + + lined4.setFocus(); +} +} |