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tdenetwork/kdict/queryview.cpp

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/* -------------------------------------------------------------
queryview.cpp (part of The KDE Dictionary Client)
Copyright (C) 2000-2001 Christian Gebauer <gebauer@kde.org>
This file is distributed under the Artistic License.
See LICENSE for details.
-------------------------------------------------------------
BrowseData data structure used for caching definitions
DictHTMLPart handling of middle mouse button clicks
QueryView widget that displays the definitions
------------------------------------------------------------- */
#include <qclipboard.h>
#include <qtimer.h>
#include <kfiledialog.h>
#include <ktempfile.h>
#include <kio/netaccess.h>
#include <kcursor.h>
#include <kpopupmenu.h>
#include <kmessagebox.h>
#include <klocale.h>
#include <khtml_events.h>
#include <khtmlview.h>
#include "actions.h"
#include "options.h"
#include "dict.h"
#include "queryview.h"
#include <kapplication.h>
#include <kiconloader.h>
//******** SaveHelper *******************************************
QString SaveHelper::lastPath;
SaveHelper::SaveHelper(const QString &saveName, const QString &filter, QWidget *parent)
: p_arent(parent), s_aveName(saveName), f_ilter(filter), file(0), tmpFile(0)
{
}
SaveHelper::~SaveHelper()
{
if (file) { // local filesystem, just close the file
delete file;
} else
if (tmpFile) { // network location, initiate transaction
tmpFile->close();
if (KIO::NetAccess::upload(tmpFile->name(),url, p_arent) == false)
KMessageBox::error(global->topLevel, i18n("Unable to save remote file."));
tmpFile->unlink(); // delete temp file
delete tmpFile;
}
}
QFile* SaveHelper::getFile(const QString &dialogTitle)
{
url = KFileDialog::getSaveURL(lastPath+s_aveName,f_ilter,p_arent,dialogTitle);
if (url.isEmpty())
return 0;
lastPath = url.url(-1);
lastPath.truncate(lastPath.length()-url.fileName().length());
if (url.isLocalFile()) {
if (QFileInfo(url.path()).exists() &&
(KMessageBox::warningContinueCancel(global->topLevel,
i18n("A file named %1 already exists.\nDo you want to replace it?").arg(url.path()),
dialogTitle, i18n("&Replace")) != KMessageBox::Continue)) {
return 0;
}
file = new QFile(url.path());
if(!file->open(IO_WriteOnly)) {
KMessageBox::error(global->topLevel, i18n("Unable to save file."));
delete file;
file = 0;
}
return file;
} else {
tmpFile = new KTempFile();
if (tmpFile->status()!=0)
KMessageBox::error(global->topLevel, i18n("Unable to create temporary file.")); {
delete tmpFile;
tmpFile = 0;
return 0;
}
return tmpFile->file();
}
}
//**** BrowseData ****************************************************
BrowseData::BrowseData(const QString &Nhtml, const QString &NqueryText)
: html(Nhtml),queryText(NqueryText),xPos(0),yPos(0)
{}
//********* DictHTMLPart ******************************************
DictHTMLPart::DictHTMLPart(QWidget *parentWidget, const char *widgetname)
: KHTMLPart(parentWidget,widgetname)
{}
DictHTMLPart::~DictHTMLPart()
{}
void DictHTMLPart::khtmlMouseReleaseEvent(khtml::MouseReleaseEvent *event)
{
if (event->qmouseEvent()->button()==MidButton)
emit(middleButtonClicked());
else
KHTMLPart::khtmlMouseReleaseEvent(event);
}
//********* QueryView ******************************************
QueryView::QueryView(QWidget *_parent)
: QVBox( _parent), actBack(0L), actForward(0L), actQueryCombo(0L), browsePos(0), isRendering(false)
{
browseList.setAutoDelete(true);
part=new DictHTMLPart(this);
part->setDNDEnabled(false);
part->setJScriptEnabled(false);
part->setJavaEnabled(false);
part->setURLCursor(KCursor::handCursor());
setFocusPolicy(QWidget::NoFocus);
connect(part, SIGNAL(completed()), SLOT(partCompleted()));
connect(part, SIGNAL(middleButtonClicked()), SLOT(middleButtonClicked()));
rightBtnMenu = new KPopupMenu(this);
connect(part,SIGNAL(popupMenu(const QString &, const QPoint &)),this,SLOT(buildPopupMenu(const QString &, const QPoint &)));
connect(part->browserExtension(),SIGNAL(openURLRequest(const KURL &,const KParts::URLArgs &)),
this,SLOT(slotURLRequest(const KURL &,const KParts::URLArgs &)));
connect(part->browserExtension(),SIGNAL(enableAction(const char *,bool)),this,SLOT(enableAction(const char *,bool)));
QTimer::singleShot( 0, this, SLOT(optionsChanged()) );
connect(interface,SIGNAL(resultReady(const QString &, const QString &)), SLOT(resultReady(const QString &, const QString &)));
}
QueryView::~QueryView()
{}
void QueryView::setActions(KToolBarPopupAction* NactBack, KToolBarPopupAction* NactForward, DictComboAction* NactQueryCombo)
{
actBack = NactBack;
connect(actBack->popupMenu(),SIGNAL(activated(int)),SLOT(browseBack(int)));
actForward = NactForward;
connect(actForward->popupMenu(),SIGNAL(activated(int)),SLOT(browseForward(int)));
actQueryCombo = NactQueryCombo;
}
bool QueryView::browseBackPossible() const
{
return (browsePos > 0)? true:false;
}
bool QueryView::browseForwardPossible() const
{
return (browsePos+1 < browseList.count()) ? true:false;
}
void QueryView::optionsChanged()
{
saveCurrentResultPos();
currentHTMLHeader = QString("<html><head><style type=\"text/css\">\n");
currentHTMLHeader += QString("body { background-color:%1; color:%2; }\n").arg(global->backgroundColor().name()).arg(global->textColor().name());
currentHTMLHeader += QString("a:link, a:active { color:%1; text-decoration:none; }\n").arg(global->linksColor().name());
currentHTMLHeader += QString("a:visited { color:%1; text-decoration:none; }\n").arg(global->visitedLinksColor().name());
currentHTMLHeader += QString("a:hover { color:%1; text-decoration:underline; }\n").arg(global->linksColor().name());
currentHTMLHeader += QString("p.heading { margin-left:0mm; margin-top:2mm; margin-bottom:2mm; padding:1mm; background-color:%1; color:%2; font-family:%3; font-size:%4pt; ").arg(global->headingsBackgroundColor().name()).arg(global->headingsTextColor().name()).arg(global->headingsFont().family()).arg(global->headingsFont().pointSize());
if (global->headingsFont().italic())
currentHTMLHeader += QString("font-style:italic; ");
if (global->headingsFont().bold())
currentHTMLHeader += QString("font-weight:bold; ");
currentHTMLHeader += QString("}\n");
currentHTMLHeader += QString("p.definition { margin-left:1.5mm; margin-top:2mm; margin-bottom:2mm;}\n");
currentHTMLHeader += QString("table { margin-left:1.5mm; margin-top:2mm; margin-bottom:2mm;}\n");
currentHTMLHeader += QString("pre { font-family:%1; font-size:%2pt; ").arg(global->textFont().family()).arg(global->textFont().pointSize());
if (global->textFont().italic())
currentHTMLHeader += QString("font-style:italic; ");
if (global->textFont().bold())
currentHTMLHeader += QString("font-weight:bold; ");
currentHTMLHeader += QString("}\n");
currentHTMLHeader += QString("</style></head>\n");
showResult(); // apply changes directly
}
void QueryView::stop()
{
if (isRendering == true) {
part->closeURL();
isRendering = false;
emit(renderingStopped());
}
}
// print current result
void QueryView::printQuery()
{
part->view()->print();
}
// save the current result in an .html file
void QueryView::saveQuery()
{
if (!browseList.isEmpty()) {
BrowseData* brw = browseList.at(browsePos);
QString fName = brw->queryText+".html";
fName.replace(QRegExp("[\\s/]"),"_");
SaveHelper helper(fName,"*.html",global->topLevel);
QFile *file = helper.getFile(QString::null);
if (file) {
QTextStream stream(file);
stream.setEncoding(QTextStream::Locale);
stream << currentHTMLHeader+brw->html;
}
}
}
void QueryView::browseBack()
{
if (browseBackPossible()) {
saveCurrentResultPos();
browsePos--;
actQueryCombo->setEditText(browseList.at(browsePos)->queryText);
showResult();
updateBrowseActions();
}
}
void QueryView::browseForward()
{
if (browseForwardPossible()) {
saveCurrentResultPos();
browsePos++;
actQueryCombo->setEditText(browseList.at(browsePos)->queryText);
showResult();
updateBrowseActions();
}
}
void QueryView::selectAll()
{
part->selectAll();
}
void QueryView::copySelection()
{
kapp->clipboard()->setText(part->selectedText());
}
void QueryView::showFindDialog()
{
KAction *act = part->actionCollection()->action("find");
if (act)
act->activate();
}
void QueryView::paletteChange ( const QPalette & )
{
optionsChanged();
}
void QueryView::fontChange ( const QFont & )
{
optionsChanged();
}
void QueryView::saveCurrentResultPos()
{
if (!browseList.isEmpty()) {
browseList.at(browsePos)->xPos = part->view()->contentsX();
browseList.at(browsePos)->yPos = part->view()->contentsY();
}
}
void QueryView::showResult()
{
if (!isRendering) {
isRendering = true;
emit(renderingStarted());
}
part->begin();
if (browseList.isEmpty()) {
part->write(currentHTMLHeader+"<body></body></html>");
part->end();
} else {
BrowseData* brw = browseList.at(browsePos);
emit(newCaption(getShortString(brw->queryText.simplifyWhiteSpace(),70)));
part->write(currentHTMLHeader+brw->html);
part->end();
part->view()->setFocus();
}
}
void QueryView::resultReady(const QString &result, const QString &query)
{
BrowseData* brw = new BrowseData(result,query);
if (browseList.isEmpty()) {
browsePos = 0;
browseList.append(brw);
} else {
saveCurrentResultPos();
while (browseList.count()>browsePos+1)
browseList.removeLast();
browseList.append(brw);
browsePos++;
while (browseList.count()>global->maxBrowseListEntrys) {
browseList.removeFirst();
browsePos--;
}
}
showResult();
emit(enablePrintSave());
actQueryCombo->selectAll();
updateBrowseActions();
}
void QueryView::partCompleted()
{
if (!browseList.isEmpty())
part->view()->setContentsPos(browseList.at(browsePos)->xPos,browseList.at(browsePos)->yPos);
if (isRendering) {
emit(renderingStopped());
isRendering = false;
}
}
void QueryView::slotURLRequest (const KURL &url, const KParts::URLArgs &)
{
QString type = url.host();
QString urlText = url.prettyURL();
urlText.remove(0,8+type.length());
if (type.length()) { // valid url
if(type=="define")
emit(defineRequested(urlText));
if(type=="dbinfo")
interface->showDbInfo(urlText.utf8());
if(type=="realhttp")
kapp->invokeBrowser("http://"+urlText);
if(type=="realftp")
kapp->invokeBrowser("ftp://"+urlText);
}
}
void QueryView::middleButtonClicked()
{
emit(clipboardRequested());
}
// construct the right-mouse-button-popup-menu on demand
void QueryView::buildPopupMenu(const QString &url, const QPoint &point)
{
rightBtnMenu->clear();
if (!url.isEmpty()) { // menuitem if mouse is over link
KURL u(url);
QString type = u.host();
popupLink = u.prettyURL();
popupLink.remove(0,8+type.length());
if (type.length()) { // valid url
if(type=="define") {
rightBtnMenu->insertItem(i18n("Define &Synonym"),
this,SLOT(popupDefineLink()));
rightBtnMenu->insertItem(i18n("M&atch Synonym"),
this,SLOT(popupMatchLink()));
rightBtnMenu->insertSeparator();
}
if(type=="dbinfo") {
rightBtnMenu->insertItem(i18n("D&atabase Information"),this,SLOT(popupDbInfo()));
rightBtnMenu->insertSeparator();
}
if(type=="realhttp") {
popupLink.prepend("http://");
rightBtnMenu->insertItem(SmallIcon("fileopen"),
i18n("&Open Link"),
this,SLOT(popupOpenLink()));
rightBtnMenu->insertSeparator();
}
if(type=="realftp") {
popupLink.prepend("ftp://");
rightBtnMenu->insertItem(SmallIcon("fileopen"),
i18n("&Open Link"),
this,SLOT(popupOpenLink()));
rightBtnMenu->insertSeparator();
}
}
}
if (part->hasSelection()) {
popupSelect = part->selectedText();
rightBtnMenu->insertItem(i18n("&Define Selection"),
this,SLOT(popupDefineSelect()));
rightBtnMenu->insertItem(i18n("&Match Selection"),
this,SLOT(popupMatchSelect()));
rightBtnMenu->insertSeparator();
} else {
kapp->clipboard()->setSelectionMode(false);
QString text = kapp->clipboard()->text();
if (text.isEmpty()) {
kapp->clipboard()->setSelectionMode(true);
text = kapp->clipboard()->text();
}
if (!text.isEmpty()) {
popupSelect = QApplication::clipboard()->text();
rightBtnMenu->insertItem(SmallIcon("define_clip"),
i18n("&Define Clipboard Content"),
this,SLOT(popupDefineSelect()));
rightBtnMenu->insertItem(i18n("&Match Clipboard Content"),
this,SLOT(popupMatchSelect()));
rightBtnMenu->insertSeparator();
}
}
int ID;
if (browseBackPossible()) { // if possible, show string
if (browseList.at(browsePos-1)->queryText.isEmpty())
rightBtnMenu->insertItem(SmallIcon("back"),
i18n("&Back: Information"),
this,SLOT(browseBack()));
else
rightBtnMenu->insertItem(SmallIcon("back"),
i18n("&Back: '%1'").arg(getShortString(browseList.at(browsePos-1)->queryText,25)),
this,SLOT(browseBack()));
} else {
ID = rightBtnMenu->insertItem(SmallIcon("back"), i18n("&Back"), this, SLOT(browseBack()));
rightBtnMenu->setItemEnabled(ID,false);
}
if (browseForwardPossible()) { // if possible, show string
if (browseList.at(browsePos+1)->queryText.isEmpty())
rightBtnMenu->insertItem(SmallIcon("forward"),
i18n("&Forward: Information"),
this,SLOT(browseForward()));
else
rightBtnMenu->insertItem(SmallIcon("forward"),
i18n("&Forward: '%1'").arg(getShortString(browseList.at(browsePos+1)->queryText,25)),
this,SLOT(browseForward()));
} else {
ID = rightBtnMenu->insertItem(SmallIcon("forward"),i18n("&Forward"),this,SLOT(browseForward()));
rightBtnMenu->setItemEnabled(ID,false);
}
rightBtnMenu->popup(point);
}
void QueryView::popupDefineLink()
{
emit(defineRequested(popupLink));
}
void QueryView::popupMatchLink()
{
emit(matchRequested(popupLink));
}
void QueryView::popupOpenLink()
{
kapp->invokeBrowser(popupLink);
}
void QueryView::popupDefineSelect()
{
emit(defineRequested(popupSelect));
}
void QueryView::popupMatchSelect()
{
emit(matchRequested(popupSelect));
}
void QueryView::popupDbInfo()
{
interface->showDbInfo(popupLink.utf8());
}
void QueryView::enableAction(const char * name, bool enabled)
{
if (!strcmp(name,"copy"))
emit(enableCopy(enabled));
}
void QueryView::browseBack(int index)
{
int x = browsePos-index;
if (x>=0) {
saveCurrentResultPos();
browsePos = x;
actQueryCombo->setEditText(browseList.at(browsePos)->queryText);
showResult();
QTimer::singleShot(0, this, SLOT(updateBrowseActions())); // don't clear the menu in this slot
}
}
void QueryView::browseForward(int index)
{
int x = browsePos+index;
if (x < (int)(browseList.count())) {
saveCurrentResultPos();
browsePos = x;
actQueryCombo->setEditText(browseList.at(browsePos)->queryText);
showResult();
QTimer::singleShot(0, this, SLOT(updateBrowseActions())); // don't clear the menu in this slot
}
}
void QueryView::updateBrowseActions()
{
if (browseBackPossible()) {
actBack->setEnabled(true);
if (browseList.at(browsePos-1)->queryText.isEmpty())
actBack->setText(i18n("&Back: Information"));
else
actBack->setText(i18n("&Back: '%1'").arg(getShortString(browseList.at(browsePos-1)->queryText,25)));
actBack->popupMenu()->clear();
int i = browsePos-1;
int num = 1;
QString s;
while ((i>=0)&&(num<=10)) {
s = browseList.at(i)->queryText;
if (s.isEmpty()) s = i18n("Information");
actBack->popupMenu()->insertItem(s,num);
num++;
i--;
}
} else {
actBack->setEnabled(false);
actBack->setText(i18n("&Back"));
actBack->popupMenu()->clear();
}
if (browseForwardPossible()) {
actForward->setEnabled(true);
if (browseList.at(browsePos+1)->queryText.isEmpty())
actForward->setText(i18n("&Forward: Information"));
else
actForward->setText(i18n("&Forward: '%1'").arg(getShortString(browseList.at(browsePos+1)->queryText,25)));
actForward->popupMenu()->clear();
int i = browsePos+1;
int num = 1;
QString s;
while ((i<(int)(browseList.count()))&&(num<=10)) {
s = browseList.at(i)->queryText;
if (s.isEmpty()) s = i18n("Information");
actForward->popupMenu()->insertItem(s,num);
num++;
i++;
}
} else {
actForward->setEnabled(false);
actForward->setText(i18n("&Forward"));
actForward->popupMenu()->clear();
}
}
//--------------------------------
#include "queryview.moc"
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