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|
package AddressBook;
use strict;
use warnings;
use QtCore4;
use QtGui4;
use QtCore4::isa qw( Qt::Widget );
use QtCore4::slots
addContact => [],
submitContact => [],
cancel => [],
# [navigation functions]
next => [],
previous => [];
# [navigation functions]
sub NEW
{
my ($class, $parent) = @_;
$class->SUPER::NEW($parent);
my $nameLabel = Qt::Label(this->tr('Name:'));
this->{nameLine} = Qt::LineEdit();
this->{nameLine}->setReadOnly(1);
my $addressLabel = Qt::Label(this->tr('Address:'));
this->{addressText} = Qt::TextEdit();
this->{addressText}->setReadOnly(1);
this->{addButton} = Qt::PushButton(this->tr('&Add'));
this->{addButton}->show();
this->{submitButton} = Qt::PushButton(this->tr('&Submit'));
this->{submitButton}->hide();
this->{cancelButton} = Qt::PushButton(this->tr('&Cancel'));
this->{cancelButton}->hide();
# [navigation pushbuttons]
this->{nextButton} = Qt::PushButton(this->tr('&Next'));
this->{nextButton}->setEnabled(0);
this->{previousButton} = Qt::PushButton(this->tr('&Previous'));
this->{previousButton}->setEnabled(0);
# [navigation pushbuttons]
this->{order} = 0;
this->connect(this->{addButton}, SIGNAL 'clicked()', this, SLOT 'addContact()');
this->connect(this->{submitButton}, SIGNAL 'clicked()', this, SLOT 'submitContact()');
this->connect(this->{cancelButton}, SIGNAL 'clicked()', this, SLOT 'cancel()');
# [connecting navigation signals]
this->connect(this->{nextButton}, SIGNAL 'clicked()', this, SLOT 'next()');
this->connect(this->{previousButton}, SIGNAL 'clicked()', this, SLOT 'previous()');
# [connecting navigation signals]
my $buttonLayout1 = Qt::VBoxLayout();
$buttonLayout1->addWidget(this->{addButton}, Qt::AlignTop());
$buttonLayout1->addWidget(this->{submitButton});
$buttonLayout1->addWidget(this->{cancelButton});
$buttonLayout1->addStretch();
# [navigation layout]
my $buttonLayout2 = Qt::HBoxLayout();
$buttonLayout2->addWidget(this->{previousButton});
$buttonLayout2->addWidget(this->{nextButton});
# [ navigation layout]
my $mainLayout = Qt::GridLayout();
$mainLayout->addWidget($nameLabel, 0, 0);
$mainLayout->addWidget(this->{nameLine}, 0, 1);
$mainLayout->addWidget($addressLabel, 1, 0, Qt::AlignTop());
$mainLayout->addWidget(this->{addressText}, 1, 1);
$mainLayout->addLayout($buttonLayout1, 1, 2);
# [adding navigation layout]
$mainLayout->addLayout($buttonLayout2, 3, 1);
# [adding navigation layout]
this->setLayout($mainLayout);
this->setWindowTitle(this->tr('Simple Address Book'));
}
sub addContact
{
this->{oldName} = this->{nameLine}->text();
this->{oldAddress} = this->{addressText}->toPlainText();
this->{nameLine}->clear();
this->{addressText}->clear();
this->{nameLine}->setReadOnly(0);
this->{nameLine}->setFocus(Qt::OtherFocusReason());
this->{addressText}->setReadOnly(0);
this->{addButton}->setEnabled(0);
# [disabling navigation]
this->{nextButton}->setEnabled(0);
this->{previousButton}->setEnabled(0);
# [disabling navigation]
this->{submitButton}->show();
this->{cancelButton}->show();
}
sub submitContact
{
my $name = this->{nameLine}->text();
my $address = this->{addressText}->toPlainText();
if ($name eq '' || $address eq '') {
Qt::MessageBox::information(this, this->tr('Empty Field'),
this->tr('Please enter a name and address.'));
}
if (!exists this->{contacts}->{$name}) {
my $order = this->{order};
++$order if grep { this->{contacts}->{$_}->{order} == $order } keys %{this->{contacts}};
my @toInc = grep { this->{contacts}->{$_}->{order} >= $order } keys %{this->{contacts}};
map{ this->{contacts}->{$_}->{order}++ } @toInc;
this->{contacts}->{$name}->{address} = $address;
this->{contacts}->{$name}->{order} = $order;
this->{order} = $order + 1;
Qt::MessageBox::information(this, this->tr('Add Successful'),
sprintf this->tr('\'%s\' has been added to your address book.'), $name);
} else {
Qt::MessageBox::information(this, this->tr('Add Unsuccessful'),
sprintf this->tr('Sorry, \'%s\' is already in your address book.'), $name);
}
if (scalar keys %{this->{contacts}} == 0) {
this->{nameLine}->clear();
this->{addressText}->clear();
}
this->{nameLine}->setReadOnly(1);
this->{addressText}->setReadOnly(1);
this->{addButton}->setEnabled(1);
# [enabling navigation]
my $number = scalar keys %{this->{contacts}};
this->{nextButton}->setEnabled($number > 1);
this->{previousButton}->setEnabled($number > 1);
# [enabling navigation]
this->{submitButton}->hide();
this->{cancelButton}->hide();
}
sub cancel
{
this->{nameLine}->setText(this->{oldName});
this->{addressText}->setText(this->{oldAddress});
if (scalar keys %{this->{contacts}} == 0) {
this->{nameLine}->clear();
this->{addressText}->clear();
}
this->{nameLine}->setReadOnly(1);
this->{addressText}->setReadOnly(1);
this->{addButton}->setEnabled(1);
my $number = scalar keys %{this->{contacts}};
this->{nextButton}->setEnabled($number > 1);
this->{previousButton}->setEnabled($number > 1);
this->{submitButton}->hide();
this->{cancelButton}->hide();
}
# [next() function]
sub next
{
my $name = this->{nameLine}->text();
my $i = this->{contacts}->{$name}->{order};
if ($i != scalar( keys %{this->{contacts}} )-1) {
$i++;
}
else {
$i = 0;
}
my ($newName) = grep { this->{contacts}->{$_}->{order} == $i } keys %{this->{contacts}};
this->{nameLine}->setText($newName);
this->{addressText}->setText(this->{contacts}->{$newName}->{address});
}
# [next() function]
# [previous() function]
sub previous
{
my $name = this->{nameLine}->text();
my $i = this->{contacts}->{$name}->{order};
if ($i == 0) {
$i = scalar( keys %{this->{contacts}} )-1;
}
else {
$i--;
}
my ($newName) = grep { this->{contacts}->{$_}->{order} == $i } keys %{this->{contacts}};
this->{nameLine}->setText($newName);
this->{addressText}->setText(this->{contacts}->{$newName}->{address});
}
# [previous() function]
1;
|
