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package MdiChild;
use strict;
use warnings;
use blib;
use QtCore4;
use QtGui4;
use QtCore4::isa qw( Qt::TextEdit );
use QtCore4::slots
documentWasModified => [''];
my $sequenceNumber = 1;
sub NEW {
shift->SUPER::NEW(@_);
this->setAttribute(Qt::WA_DeleteOnClose());
this->{isUntitled} = 1;
}
sub newFile {
this->{isUntitled} = 1;
this->{curFile} = sprintf "document%d.txt", $sequenceNumber++;
this->setWindowTitle(this->{curFile} . "[*]");
this->connect(this->document(), SIGNAL 'contentsChanged()',
this, SLOT 'documentWasModified()');
}
sub loadFile {
my ( $fileName ) = @_;
if(!(open( FH, "< $fileName"))) {
Qt::MessageBox::warning(this, "MDI",
sprintf("Cannot read file %s:\n%s.",
$fileName,
$!));
return 0;
}
Qt::Application::setOverrideCursor(Qt::Cursor(Qt::WaitCursor()));
this->setPlainText( join '', <FH> );
Qt::Application::restoreOverrideCursor();
close FH;
setCurrentFile($fileName);
this->connect(this->document(), SIGNAL 'contentsChanged()',
this, SLOT 'documentWasModified()');
return 1;
}
sub save {
if (this->{isUntitled}) {
return saveAs();
}
else {
return saveFile(this->{curFile});
}
}
sub saveAs {
my $fileName = Qt::FileDialog::getSaveFileName(this, "Save As",
this->{curFile});
if (!$fileName) {
return 0;
}
return saveFile($fileName);
}
sub saveFile {
my ( $fileName ) = @_;
if(!(open( FH, "> $fileName"))) {
Qt::MessageBox::warning(this, "MDI",
sprintf("Cannot write file %s:\n%s.",
$fileName,
$!));
return 0;
}
Qt::Application::setOverrideCursor(Qt::Cursor(Qt::WaitCursor()));
print FH this->toPlainText();
Qt::Application::restoreOverrideCursor();
close FH;
setCurrentFile($fileName);
return 1;
}
sub userFriendlyCurrentFile {
return strippedName(this->{curFile});
}
sub closeEvent {
my ( $event ) = @_;
if (maybeSave()) {
$event->accept();
} else {
$event->ignore();
}
}
sub documentWasModified {
this->setWindowModified(this->document()->isModified());
}
sub maybeSave {
if (this->document()->isModified()) {
my $ret = Qt::MessageBox::warning(
this,
"MDI",
sprintf( "'%s' has been modified.\n" .
"Do you want to save your changes?",
userFriendlyCurrentFile() ),
CAST Qt::MessageBox::Save() | Qt::MessageBox::Discard() | Qt::MessageBox::Cancel(), 'QMessageBox::StandardButtons');
if ($ret == Qt::MessageBox::Save()) {
return save();
}
elsif ($ret == Qt::MessageBox::Cancel()) {
return 0;
}
}
return 1;
}
sub setCurrentFile {
my ( $fileName ) = @_;
this->{curFile} = Qt::FileInfo($fileName)->canonicalFilePath();
this->{isUntitled} = 0;
this->document()->setModified(0);
this->setWindowModified(0);
this->setWindowTitle(userFriendlyCurrentFile() . "[*]");
}
sub currentFile {
if( defined this->{curFile} ) {
return this->{curFile};
}
return '';
}
sub strippedName {
my ( $fullFileName ) = @_;
return Qt::FileInfo($fullFileName)->fileName();
}
1;
|
