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-rw-r--r--vcs/cvsservice/diffwidget.cpp331
1 files changed, 331 insertions, 0 deletions
diff --git a/vcs/cvsservice/diffwidget.cpp b/vcs/cvsservice/diffwidget.cpp
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+++ b/vcs/cvsservice/diffwidget.cpp
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+/***************************************************************************
+ * Copyright (C) 2001 by Harald Fernengel *
+ * harry@kdevelop.org *
+ * *
+ * 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. *
+ * *
+ ***************************************************************************/
+
+#include <qlayout.h>
+#include <qtextedit.h>
+#include <qpopupmenu.h>
+#include <qcursor.h>
+#include <qfile.h>
+
+#include <kconfig.h>
+#include <kapplication.h>
+#include <klocale.h>
+#include <kservice.h>
+#include <ktempfile.h>
+#include <kpopupmenu.h>
+#include <kiconloader.h>
+#include <kfiledialog.h>
+#include <kmessagebox.h>
+
+#include <kparts/componentfactory.h>
+#include <kparts/part.h>
+
+#include <kio/jobclasses.h>
+#include <kio/job.h>
+
+#include "diffwidget.h"
+
+// yup, magic value for the popupmenu-id
+static const int POPUP_BASE = 130977;
+
+QStringList KDiffTextEdit::extParts;
+QStringList KDiffTextEdit::extPartsTranslated;
+
+KDiffTextEdit::KDiffTextEdit( QWidget* parent, const char* name ): QTextEdit( parent, name )
+{
+ KConfig* config = kapp->config();
+ config->setGroup( "Diff" );
+ _highlight = config->readBoolEntry( "Highlight", true );
+
+ searchExtParts();
+}
+
+KDiffTextEdit::~KDiffTextEdit()
+{
+ KConfig* config = kapp->config();
+
+ config->setGroup( "Diff" );
+ config->writeEntry( "Highlight", _highlight );
+}
+
+QPopupMenu* KDiffTextEdit::createPopupMenu()
+{
+ return createPopupMenu( QPoint() );
+}
+
+QPopupMenu* KDiffTextEdit::createPopupMenu( const QPoint& p )
+{
+ QPopupMenu* popup = QTextEdit::createPopupMenu( p );
+ if ( !popup )
+ popup = new QPopupMenu( this );
+
+ int i = 0;
+
+ for ( QStringList::Iterator it = extPartsTranslated.begin(); it != extPartsTranslated.end(); ++it ) {
+ popup->insertItem( i18n( "Show in %1" ).arg( *it ), i + POPUP_BASE, i );
+ i++;
+ }
+ if ( !extPartsTranslated.isEmpty() )
+ popup->insertSeparator( i );
+ connect( popup, SIGNAL(activated(int)), this, SLOT(popupActivated(int)) );
+
+ popup->insertItem( SmallIconSet( "filesaveas" ), i18n( "&Save As..." ), this, SLOT(saveAs()), CTRL + Key_S, POPUP_BASE - 2, 0 );
+ popup->setItemEnabled( POPUP_BASE - 2, length() > 0 );
+
+ popup->insertSeparator( 1 );
+
+ popup->insertItem( i18n( "Highlight Syntax" ), this, SLOT(toggleSyntaxHighlight()), 0, POPUP_BASE - 1, 2 );
+ popup->setItemChecked( POPUP_BASE - 1, _highlight );
+ popup->insertSeparator( 3 );
+
+ return popup;
+}
+
+void KDiffTextEdit::saveAs()
+{
+ QString fName = KFileDialog::getSaveFileName();
+ if ( fName.isEmpty() )
+ return;
+
+ QFile f( fName );
+ if ( f.open( IO_WriteOnly ) ) {
+ QTextStream stream( &f );
+ int pCount = paragraphs();
+ for ( int i = 0; i < pCount; ++i )
+ stream << text( i ) << "\n";
+ f.close();
+ } else {
+ KMessageBox::sorry( this, i18n("Unable to open file."), i18n("Diff Frontend") );
+ }
+}
+
+void KDiffTextEdit::toggleSyntaxHighlight()
+{
+ _highlight = !_highlight;
+ if ( _highlight )
+ applySyntaxHighlight();
+ else
+ clearSyntaxHighlight();
+}
+
+void KDiffTextEdit::applySyntaxHighlight()
+{
+ // the diff has been loaded so we apply a simple highlighting
+ static QColor cAdded( 190, 190, 237);
+ static QColor cRemoved( 190, 237, 190 );
+
+ if ( !_highlight )
+ return;
+
+ int paragCount = paragraphs();
+ for ( int i = 0; i < paragCount; ++i ) {
+ QString txt = text( i );
+ if ( txt.length() > 0 ) {
+ if ( txt.startsWith( "+" ) || txt.startsWith( ">" ) ) {
+ setParagraphBackgroundColor( i, cAdded );
+ } else if ( txt.startsWith( "-" ) || txt.startsWith( "<" ) ) {
+ setParagraphBackgroundColor( i, cRemoved );
+ }
+ }
+ }
+}
+
+void KDiffTextEdit::clearSyntaxHighlight()
+{
+ int paragCount = paragraphs();
+ for ( int i = 0; i < paragCount; ++i ) {
+ clearParagraphBackground( i );
+ }
+}
+
+void KDiffTextEdit::searchExtParts()
+{
+ // only execute once
+ static bool init = false;
+ if ( init )
+ return;
+ init = true;
+
+ // search all parts that can handle text/x-diff
+ KTrader::OfferList offers = KTrader::self()->query("text/x-diff", "('KParts/ReadOnlyPart' in ServiceTypes) and ('text/x-diff' in ServiceTypes)");
+ KTrader::OfferList::const_iterator it;
+ for ( it = offers.begin(); it != offers.end(); ++it ) {
+ KService::Ptr ptr = (*it);
+ extPartsTranslated << ptr->name();
+ extParts << ptr->desktopEntryName();
+ }
+ return;
+}
+
+void KDiffTextEdit::popupActivated( int id )
+{
+ id -= POPUP_BASE;
+ if ( id < 0 || id > (int)extParts.count() )
+ return;
+
+ emit externalPartRequested( extParts[ id ] );
+}
+
+DiffWidget::DiffWidget( QWidget *parent, const char *name, WFlags f ):
+ QWidget( parent, name, f ), tempFile( 0 )
+{
+ job = 0;
+ extPart = 0;
+
+ te = new KDiffTextEdit( this, "Main Diff Viewer" );
+ te->setReadOnly( true );
+ te->setTextFormat( QTextEdit::PlainText );
+// te->setMinimumSize( 300, 200 );
+ connect( te, SIGNAL(externalPartRequested(const QString&)), this, SLOT(loadExtPart(const QString&)) );
+
+ QVBoxLayout* layout = new QVBoxLayout( this );
+ layout->addWidget( te );
+}
+
+DiffWidget::~DiffWidget()
+{
+ delete tempFile;
+}
+
+void DiffWidget::setExtPartVisible( bool visible )
+{
+ if ( !extPart || !extPart->widget() ) {
+ te->show();
+ return;
+ }
+ if ( visible ) {
+ te->hide();
+ extPart->widget()->show();
+ } else {
+ te->show();
+ extPart->widget()->hide();
+ }
+}
+
+void DiffWidget::loadExtPart( const QString& partName )
+{
+ if ( extPart ) {
+ setExtPartVisible( false );
+ delete extPart;
+ extPart = 0;
+ }
+
+ KService::Ptr extService = KService::serviceByDesktopName( partName );
+ if ( !extService )
+ return;
+
+ extPart = KParts::ComponentFactory::createPartInstanceFromService<KParts::ReadOnlyPart>( extService, this, 0, this, 0 );
+ if ( !extPart || !extPart->widget() )
+ return;
+
+ layout()->add( extPart->widget() );
+
+ setExtPartVisible( true );
+
+ if ( te->paragraphs() > 0 )
+ populateExtPart();
+}
+
+void DiffWidget::slotClear()
+{
+ te->clear();
+ if ( extPart )
+ extPart->closeURL();
+}
+
+// internally for the TextEdit only!
+void DiffWidget::slotAppend( const QString& str )
+{
+ te->append( str );
+}
+
+// internally for the TextEdit only!
+void DiffWidget::slotAppend( KIO::Job*, const QByteArray& ba )
+{
+ slotAppend( QString( ba ) );
+}
+
+void DiffWidget::populateExtPart()
+{
+ if ( !extPart )
+ return;
+
+ bool ok = false;
+ int paragCount = te->paragraphs();
+ if ( extPart->openStream( "text/plain", KURL() ) ) {
+ for ( int i = 0; i < paragCount; ++i )
+ extPart->writeStream( te->text( i ).local8Bit() );
+ ok = extPart->closeStream();
+ } else {
+ // workaround for parts that cannot handle streams
+ delete tempFile;
+ tempFile = new KTempFile();
+ tempFile->setAutoDelete( true );
+ for ( int i = 0; i < paragCount; ++i )
+ *(tempFile->textStream()) << te->text( i ) << endl;
+ tempFile->close();
+ ok = extPart->openURL( KURL( tempFile->name() ) );
+ }
+ if ( !ok )
+ setExtPartVisible( false );
+}
+
+// internally for the TextEdit only!
+void DiffWidget::slotFinished()
+{
+ te->applySyntaxHighlight();
+ populateExtPart();
+}
+
+void DiffWidget::setDiff( const QString& diff )
+{
+ slotClear();
+ slotAppend( diff );
+ slotFinished();
+}
+
+void DiffWidget::openURL( const KURL& url )
+{
+ if ( job )
+ job->kill();
+
+ KIO::TransferJob* job = KIO::get( url );
+ if ( !job )
+ return;
+
+ connect( job, SIGNAL(data( KIO::Job *, const QByteArray & )),
+ this, SLOT(slotAppend( KIO::Job*, const QByteArray& )) );
+ connect( job, SIGNAL(result( KIO::Job * )),
+ this, SLOT(slotFinished()) );
+}
+
+void DiffWidget::contextMenuEvent( QContextMenuEvent* /* e */ )
+{
+ QPopupMenu* popup = new QPopupMenu( this );
+
+ if ( !te->isVisible() )
+ popup->insertItem( i18n("Display &Raw Output"), this, SLOT(showTextEdit()) );
+
+ popup->exec( QCursor::pos() );
+ delete popup;
+}
+
+void DiffWidget::showExtPart()
+{
+ setExtPartVisible( true );
+}
+
+void DiffWidget::showTextEdit()
+{
+ setExtPartVisible( false );
+}
+
+#include "diffwidget.moc"
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-18 03:26:23 +0000