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qt-agistudio/src/helpwindow.cpp

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/****************************************************************************
**
** This help window was modified from an example code by QT.
** Original license:
**
** Copyright (C) 1992-1999 Troll Tech 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.
**
*****************************************************************************/
//my modifications of the original source:
//included .xpm in the source, removed 'about' buttons, added setSource,
//removed tr() (didn't compile with Mandrake 7.0)
//added hideEvent,showEvent
#include "helpwindow.h"
#include <qstatusbar.h>
#include <qpixmap.h>
#include <q3popupmenu.h>
#include <qmenubar.h>
#include <q3toolbar.h>
#include <qtoolbutton.h>
#include <qicon.h>
#include <qfile.h>
#include <q3textstream.h>
#include <q3stylesheet.h>
#include <qmessagebox.h>
#include <q3filedialog.h>
#include <qapplication.h>
#include <qcombobox.h>
#include <qevent.h>
#include <qlineedit.h>
#include <qobject.h>
#include <qfileinfo.h>
#include <qfile.h>
#include <qdatastream.h>
//Added by qt3to4:
#include <QShowEvent>
#include <Q3Frame>
#include <QHideEvent>
#include <QKeyEvent>
#include <ctype.h>
#include "home.xpm"
#include "forward.xpm"
#include "back.xpm"
#include "menu.h"
HelpWindow *helpwindow,*helpwindow1;
HelpWindow::HelpWindow( const QString& home_, const QString& _path, QWidget* parent, const char *name )
: Q3MainWindow( parent, name ), pathCombo( 0 ), selectedURL(),
path( QFileInfo( home_ ).dirPath( TRUE ), "*.htm*" )
{
Q3StyleSheetItem* style;
// Modify the application-wide default style sheet to handle
// some extra HTML gracefully.
//
// Ignore any bodytext in <head>...</head>:
style = new Q3StyleSheetItem( Q3StyleSheet::defaultSheet(), "head" );
style->setDisplayMode(Q3StyleSheetItem::DisplayNone);
//
// Not in default style sheet, just fake it:
style = new Q3StyleSheetItem( Q3StyleSheet::defaultSheet(), "dl" );
style->setDisplayMode(Q3StyleSheetItem::DisplayBlock);
style = new Q3StyleSheetItem( Q3StyleSheet::defaultSheet(), "dt" );
style->setDisplayMode(Q3StyleSheetItem::DisplayBlock);
style->setContexts("dl");
//
// Many HTML files omit the </p> or </li>, so we add this for efficiency:
Q3StyleSheet::defaultSheet()->item("p")->setSelfNesting( FALSE );
Q3StyleSheet::defaultSheet()->item("li")->setSelfNesting( FALSE );
readHistory();
readBookmarks();
fileList = path.entryList();
browser = new Q3TextBrowser( this );
browser->mimeSourceFactory()->setFilePath( _path );
browser->setFrameStyle( Q3Frame::Panel | Q3Frame::Sunken );
connect( browser, SIGNAL( textChanged() ),
this, SLOT( textChanged() ) );
setCentralWidget( browser );
if ( !home_.isEmpty() )
browser->setSource( home_ );
connect( browser, SIGNAL( highlighted( const QString&) ),
statusBar(), SLOT( message( const QString&)) );
resize( 640,700 );
Q3PopupMenu* file = new Q3PopupMenu( this );
file->insertItem( "&New Window", this, SLOT( newWindow() ), Qt::ALT | Qt::Key_N );
file->insertItem( "&Open File", this, SLOT( openFile() ), Qt::ALT | Qt::Key_O );
file->insertSeparator();
file->insertItem( "&Close", this, SLOT( hide() ), Qt::ALT | Qt::Key_Q );
Q3PopupMenu* go = new Q3PopupMenu( this );
backwardId = go->insertItem( QPixmap(back),
"&Backward", browser, SLOT( backward() ),
Qt::ALT | Qt::Key_Left );
forwardId = go->insertItem( QPixmap(forward_icon),
"&Forward", browser, SLOT( forward() ),
Qt::ALT | Qt::Key_Right );
go->insertItem( QPixmap(home), "&Home", browser, SLOT( home() ) );
hist = new Q3PopupMenu( this );
QStringList::Iterator it = history.begin();
for ( ; it != history.end(); ++it )
mHistory[ hist->insertItem( *it ) ] = *it;
connect( hist, SIGNAL( activated( int ) ),
this, SLOT( histChosen( int ) ) );
bookm = new Q3PopupMenu( this );
bookm->insertItem( "Add Bookmark", this, SLOT( addBookmark() ) );
bookm->insertSeparator();
QStringList::Iterator it2 = bookmarks.begin();
for ( ; it2 != bookmarks.end(); ++it2 )
mBookmarks[ bookm->insertItem( *it2 ) ] = *it2;
connect( bookm, SIGNAL( activated( int ) ),
this, SLOT( bookmChosen( int ) ) );
menuBar()->insertItem( "&File", file );
menuBar()->insertItem( "&Go", go );
menuBar()->insertItem( "History" , hist );
menuBar()->insertItem( "Bookmarks" , bookm );
menuBar()->setItemEnabled( forwardId, FALSE);
menuBar()->setItemEnabled( backwardId, FALSE);
connect( browser, SIGNAL( backwardAvailable( bool ) ),
this, SLOT( setBackwardAvailable( bool ) ) );
connect( browser, SIGNAL( forwardAvailable( bool ) ),
this, SLOT( setForwardAvailable( bool ) ) );
Q3ToolBar* toolbar = new Q3ToolBar( this );
addToolBar( toolbar, "Toolbar");
QToolButton* button;
button = new QToolButton( QPixmap(back), "Backward", "", browser, SLOT(backward()), toolbar );
connect( browser, SIGNAL( backwardAvailable(bool) ), button, SLOT( setEnabled(bool) ) );
button->setEnabled( FALSE );
button = new QToolButton( QPixmap(forward_icon), "Forward", "", browser, SLOT(forward()), toolbar );
connect( browser, SIGNAL( forwardAvailable(bool) ), button, SLOT( setEnabled(bool) ) );
button->setEnabled( FALSE );
button = new QToolButton( QPixmap(home), "Home", "", browser, SLOT(home()), toolbar );
toolbar->addSeparator();
pathCombo = new QComboBox( TRUE, toolbar );
connect( pathCombo, SIGNAL( activated( const QString & ) ),
this, SLOT( pathSelected( const QString & ) ) );
toolbar->setStretchableWidget( pathCombo );
setRightJustification( TRUE );
pathCombo->insertItem( home_ );
pathCombo->installEventFilter( this );
QObjectList l = queryList( "QLineEdit" );
if ( l.size()>0 )
( (QLineEdit*)l.at(0) )->installEventFilter( this );
browser->setFocus();
}
void HelpWindow::setBackwardAvailable( bool b)
{
menuBar()->setItemEnabled( backwardId, b);
}
void HelpWindow::setForwardAvailable( bool b)
{
menuBar()->setItemEnabled( forwardId, b);
}
void HelpWindow::textChanged()
{
if ( browser->documentTitle().isNull() )
setCaption( browser->context() );
else
setCaption( browser->documentTitle() ) ;
selectedURL = caption();
if ( !selectedURL.isEmpty() && pathCombo ) {
path = QDir( QFileInfo( selectedURL ).dirPath( TRUE ), "*.htm*" );
fileList = path.entryList();
bool exists = FALSE;
int i;
for ( i = 0; i < pathCombo->count(); ++i ) {
if ( pathCombo->text( i ) == selectedURL ) {
exists = TRUE;
break;
}
}
if ( !exists ) {
pathCombo->insertItem( selectedURL, 0 );
pathCombo->setCurrentItem( 0 );
mHistory[ hist->insertItem( selectedURL ) ] = selectedURL;
} else
pathCombo->setCurrentItem( i );
selectedURL = QString::null;
}
}
HelpWindow::~HelpWindow()
{
history.clear();
QMap<int, QString>::Iterator it = mHistory.begin();
for ( ; it != mHistory.end(); ++it )
history.append( *it );
QFile f( QDir::currentDirPath() + "/.history" );
f.open( QIODevice::WriteOnly );
QDataStream s( &f );
s << history;
f.close();
bookmarks.clear();
QMap<int, QString>::Iterator it2 = mBookmarks.begin();
for ( ; it2 != mBookmarks.end(); ++it2 )
bookmarks.append( *it2 );
QFile f2( QDir::currentDirPath() + "/.bookmarks" );
f2.open( QIODevice::WriteOnly );
QDataStream s2( &f2 );
s2 << bookmarks;
f2.close();
}
void HelpWindow::openFile()
{
QString fn = Q3FileDialog::getOpenFileName( QString::null, QString::null, this );
if ( !fn.isEmpty() )
browser->setSource( fn );
}
void HelpWindow::setSource(char *filename)
{
browser->setSource( filename );
}
void HelpWindow::newWindow()
{
( new HelpWindow(browser->source(), "qbrowser") )->show();
}
void HelpWindow::pathSelected( const QString &_path )
{
browser->setSource( _path );
path = QDir( QFileInfo( _path ).dirPath( TRUE ), "*.htm*" );
fileList = path.entryList();
QMap<int, QString>::Iterator it = mHistory.begin();
bool exists = FALSE;
for ( ; it != mHistory.end(); ++it ) {
if ( *it == _path ) {
exists = TRUE;
break;
}
}
if ( !exists )
mHistory[ hist->insertItem( _path ) ] = _path;
}
bool HelpWindow::eventFilter( QObject * o, QEvent * e )
{
QObjectList l = queryList( "QLineEdit" );
if ( l.empty() )
return FALSE;
QLineEdit *lined = (QLineEdit*)l.at(0);
if ( ( o == pathCombo || o == lined ) &&
e->type() == QEvent::KeyPress ) {
if ( isprint(((QKeyEvent *)e)->ascii()) ) {
if ( lined->hasMarkedText() )
lined->del();
QString nt( lined->text() );
nt.remove( 0, nt.findRev( '/' ) + 1 );
nt.truncate( lined->cursorPosition() );
nt += (char)(((QKeyEvent *)e)->ascii());
QStringList::Iterator it = fileList.begin();
while ( it != fileList.end() && (*it).left( nt.length() ) != nt )
++it;
if ( !(*it).isEmpty() ) {
nt = *it;
int cp = lined->cursorPosition() + 1;
int l = path.canonicalPath().length() + 1;
lined->validateAndSet( path.canonicalPath() + "/" + nt, cp, cp, l + nt.length() );
return TRUE;
}
}
}
return FALSE;
}
void HelpWindow::readHistory()
{
if ( QFile::exists( QDir::currentDirPath() + "/.history" ) ) {
QFile f( QDir::currentDirPath() + "/.history" );
f.open( QIODevice::ReadOnly );
QDataStream s( &f );
s >> history;
f.close();
while ( history.count() > 20 )
history.remove( history.begin() );
}
}
void HelpWindow::readBookmarks()
{
if ( QFile::exists( QDir::currentDirPath() + "/.bookmarks" ) ) {
QFile f( QDir::currentDirPath() + "/.bookmarks" );
f.open( QIODevice::ReadOnly );
QDataStream s( &f );
s >> bookmarks;
f.close();
}
}
void HelpWindow::histChosen( int i )
{
if ( mHistory.contains( i ) )
browser->setSource( mHistory[ i ] );
}
void HelpWindow::bookmChosen( int i )
{
if ( mBookmarks.contains( i ) )
browser->setSource( mBookmarks[ i ] );
}
void HelpWindow::addBookmark()
{
mBookmarks[ bookm->insertItem( caption() ) ] = caption();
}
//*********************************************
void HelpWindow::hideEvent( QHideEvent * )
{
if(window_list && window_list->isVisible())window_list->draw();
}
//*********************************************
void HelpWindow::showEvent( QShowEvent * )
{
if(window_list && window_list->isVisible())window_list->draw();
}
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