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/***************************************************************************
qucshelp.cpp - description
-------------------
begin : Sun Jan 11 2004
copyright : (C) 2004 by Michael Margraf
email : michael.margraf@alumni.tu-berlin.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "qucshelp.h"
#include "htmldatafetcher.h"
#include <qpushbutton.h>
#include <qaction.h>
#include <qpixmap.h>
#include <qfile.h>
#include <qtextstream.h>
#include <qpopupmenu.h>
#include <qmenubar.h>
#include <qapplication.h>
#include <qlistview.h>
QucsHelp::QucsHelp(const QString& page)
{
currentIndex = 0;
dataFetcher = new HtmlDataFetcher();
links = dataFetcher->fetchLinksToFiles(QucsHelpDir.filePath("index.html"));
// set application icon
setIcon (QPixmap(QucsSettings.BitmapDir + "big.qucs.xpm"));
setCaption(tr("Qucs Help System"));
textBrowser = new TextBrowser(this);
textBrowser->setMinimumSize(400,200);
setCentralWidget(textBrowser);
setupActions();
createSidebar();
textBrowser->setSource(QucsHelpDir.filePath(links[0]));
// .......................................
if(!page.isEmpty())
textBrowser->setSource(QucsHelpDir.filePath(page));
}
QucsHelp::~QucsHelp()
{}
void QucsHelp::setupActions()
{
QToolBar *toolbar = new QToolBar(this,"main_toolbar");
QMenuBar *bar = menuBar();
statusBar();
const QKeySequence ks = QKeySequence();
QAction *quitAction = new QAction(QIconSet(QPixmap(QucsSettings.BitmapDir + "quit.png")),
tr("&Quit"), CTRL+Key_Q, this);
QAction *backAction = new QAction(QIconSet(QPixmap(QucsSettings.BitmapDir + "back.png")),
tr("&Back"), ALT+Key_Left, this);
QAction *forwardAction = new QAction(QIconSet(QPixmap(QucsSettings.BitmapDir + "forward.png")),
tr("&Forward"), ALT+Key_Right, this);
QAction *homeAction = new QAction(QIconSet(QPixmap(QucsSettings.BitmapDir + "home.png")),
tr("&Home"),CTRL+Key_H,this);
previousAction = new QAction(QIconSet(QPixmap(QucsSettings.BitmapDir + "previous.png")),tr("&Previous"),
ks, this);
nextAction = new QAction(QIconSet(QPixmap(QucsSettings.BitmapDir + "next.png")),
tr("&Next"), ks, this);
viewBrowseDock = new QAction(tr("&Table of Contents"), 0, this);
viewBrowseDock->setToggleAction(true);
viewBrowseDock->setOn(true);
viewBrowseDock->setStatusTip(tr("Enables/disables the table of contents"));
viewBrowseDock->setWhatsThis(tr("Table of Contents\n\nEnables/disables the table of contents"));
connect(quitAction,SIGNAL(activated()),qApp,SLOT(quit()));
connect(backAction,SIGNAL(activated()),textBrowser,SLOT(backward()));
connect(textBrowser,SIGNAL(backwardAvailable(bool)),backAction,SLOT(setEnabled(bool)));
connect(forwardAction,SIGNAL(activated()),textBrowser,SLOT(forward()));
connect(textBrowser,SIGNAL(forwardAvailable(bool)),forwardAction,SLOT(setEnabled(bool)));
connect(homeAction,SIGNAL(activated()),textBrowser,SLOT(home()));
connect(textBrowser,SIGNAL(sourceChanged(const QString &)),this,SLOT(slotSourceChanged(const QString&)));
connect(previousAction,SIGNAL(activated()),this,SLOT(previousLink()));
connect(nextAction,SIGNAL(activated()),this,SLOT(nextLink()));
connect(viewBrowseDock, SIGNAL(toggled(bool)), SLOT(slotToggleSidebar(bool)));
backAction->addTo(toolbar);
forwardAction->addTo(toolbar);
toolbar->addSeparator();
homeAction->addTo(toolbar);
previousAction->addTo(toolbar);
nextAction->addTo(toolbar);
toolbar->addSeparator();
quitAction->addTo(toolbar);
QPopupMenu *fileMenu = new QPopupMenu(this);
quitAction->addTo(fileMenu);
QPopupMenu *viewMenu = new QPopupMenu(this);
backAction->addTo(viewMenu);
forwardAction->addTo(viewMenu);
homeAction->addTo(viewMenu);
previousAction->addTo(viewMenu);
nextAction->addTo(viewMenu);
viewMenu->insertSeparator();
viewBrowseDock->addTo(viewMenu);
QPopupMenu *helpMenu = new QPopupMenu(this);
helpMenu->insertItem(tr("&About Qt"),qApp,SLOT(aboutQt()));
bar->insertItem(tr("&File"), fileMenu );
bar->insertItem(tr("&View"),viewMenu);
bar->insertSeparator();
bar->insertItem(tr("&Help"),helpMenu);
}
void QucsHelp::createSidebar()
{
dock = new QDockWindow(QDockWindow::InDock,this);
dock->setResizeEnabled(true);
dock->setCloseMode(QDockWindow::Always);
connect(dock,SIGNAL(visibilityChanged(bool)),this,SLOT(slotToggleSidebarAction(bool)));
chaptersView = new QListView(dock,"chapters_view");
chaptersView->setRootIsDecorated(false);
chaptersView->addColumn(tr("Contents"));
chaptersView->setSorting(-1);
chaptersView->setSelectionMode(QListView::Single);
dock->setWidget(chaptersView);
moveDockWindow(dock,QDockWindow::Left);
QStringList l = dataFetcher->fetchChapterTexts(QucsHelpDir.filePath("index.html"));
for(int i=l.count()-1;i>=0;i--)
chaptersView->insertItem(new QListViewItem(chaptersView,l[i],QString::number(i+1)));
QListViewItem *curItem = new QListViewItem(chaptersView,tr("Home"),QString::number(0));
chaptersView->insertItem(curItem);
chaptersView->setSelected(curItem,true);
connect(chaptersView,SIGNAL(selectionChanged()),this,SLOT(displaySelectedChapter()));
}
void QucsHelp::displaySelectedChapter()
{
if(chaptersView->selectedItem() == 0)
return;
uint y = chaptersView->selectedItem()->text(1).toUInt();
Q_ASSERT(y < links.count());
textBrowser->setSource(QucsHelpDir.filePath(links[y]));
cachedSelectedText = chaptersView->selectedItem()->text(1);
}
//This slot updates next and previous actions i.e enabling/disabling
void QucsHelp::slotSourceChanged(const QString& _str)
{
QString str(_str);
// Remove '#*' chars in link since we don't check '#top,etc' while tracking previous actions
int hashPos = str.findRev('#');
if(hashPos != -1)
str = str.left(hashPos);
// Don't do anything if accessing same page
if(str == currentSource)
return;
bool found = false;
for(unsigned int i=0;i < links.count(); i++)
{
if(str.endsWith(links[i]))
{
currentIndex = i;
previousAction->setEnabled(bool(i!=0));
nextAction->setEnabled(bool(i+1 != links.count()));
QString temp = cachedSelectedText;
if(chaptersView->selectedItem())
temp = chaptersView->selectedItem()->text(1);
if(temp.toUInt() != i)
{
QListViewItem *item = chaptersView->findItem(QString::number(i),1);
if(item != 0l)
{
chaptersView->blockSignals(true);
chaptersView->setSelected(item,true);
chaptersView->blockSignals(false);
}
}
found = true;
break;
}
}
if(found == false) // some error
{
textBrowser->setSource(QucsHelpDir.filePath(links[0]));
currentSource = QucsHelpDir.filePath(links[0]);
qDebug("QucsHelp::slotSourceChanged(): Link mismatch \n Link: %s",str.ascii());
}
else
currentSource = str;
}
void QucsHelp::previousLink()
{
if(currentIndex > 0)
--currentIndex;
textBrowser->setSource(QucsHelpDir.filePath(links[currentIndex]));
}
void QucsHelp::nextLink()
{
++currentIndex;
if(currentIndex >= links.count())
currentIndex = links.count();
textBrowser->setSource(QucsHelpDir.filePath(links[currentIndex]));
}
void QucsHelp::slotToggleSidebar(bool b)
{
dock->setShown(b);
}
void QucsHelp::slotToggleSidebarAction(bool b)
{
viewBrowseDock->blockSignals(true);
viewBrowseDock->setOn(b);
viewBrowseDock->blockSignals(false);
}
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