1 files changed, 294 insertions, 0 deletions
diff --git a/src/gvcore/externaltoolmanager.cpp b/src/gvcore/externaltoolmanager.cpp
new file mode 100644
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--- /dev/null
+++ b/src/gvcore/externaltoolmanager.cpp
@@ -0,0 +1,294 @@
+// vim: set tabstop=4 shiftwidth=4 noexpandtab
+/*
+Gwenview - A simple image viewer for KDE
+Copyright 2000-2004 Aurélien Gāteau
+ 
+ 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+// STL
+#include <list>
+
+// Qt
+#include <qdir.h>
+
+// KDE
+#include <kdebug.h>
+#include <kdesktopfile.h>
+#include <kglobal.h>
+#include <kservice.h>
+#include <kstandarddirs.h>
+#include <kurl.h>
+
+// Local
+#include "externaltoolcontext.h"
+#include "externaltoolmanager.h"
+namespace Gwenview {
+
+#undef ENABLE_LOG
+#undef LOG
+//#define ENABLE_LOG
+#ifdef ENABLE_LOG
+#define LOG(x) kdDebug() << k_funcinfo << x << endl
+#else
+#define LOG(x) ;
+#endif
+
+// Helper functions for createContextInternal
+inline bool mimeTypeMatches(const QString& candidate, const QString& reference) {
+	if (reference=="*") return true;
+
+	if (reference.right(1)=="*") {
+		return candidate.startsWith(reference.left(reference.length()-1));
+	} else {
+		return candidate==reference;
+	}
+}
+
+inline bool isSubSetOf(const QStringList& subSet, const QStringList& set) {
+	// Simple implementation, might need some optimization
+	QStringList::ConstIterator itSubSet=subSet.begin();
+	QStringList::ConstIterator itSetBegin=set.begin();
+	QStringList::ConstIterator itSetEnd=set.end();
+
+	for (; itSubSet!=subSet.end(); ++itSubSet) {
+		bool matchFound=false;
+		QStringList::ConstIterator itSet=itSetBegin;
+		for (; itSet!=itSetEnd; ++itSet) {
+			if (mimeTypeMatches(*itSubSet, *itSet)) {
+				matchFound=true;
+				break;
+			}
+		}
+		if (!matchFound) {
+			return false;
+		}
+	}
+	return true;
+}
+
+
+struct ExternalToolManagerPrivate {
+	QDict<KDesktopFile> mDesktopFiles;
+	QPtrList<KService> mServices;
+	QString mUserToolDir;
+
+	/**
+	 * Helper function for createContextInternal
+	 */
+	static bool compareKServicePtrByName(const KService* s1, const KService* s2) {
+		Q_ASSERT(s1);
+		Q_ASSERT(s2);
+		return s1->name() < s2->name();
+	}
+
+	ExternalToolContext* createContextInternal(
+		QObject* parent, const KURL::List& urls, const QStringList& mimeTypes)
+	{
+		bool onlyOneURL=urls.size()==1;
+		
+		// Only add to selectionServices the services which can handle all the
+		// different mime types present in the selection
+		//
+		// We use std::list instead of QValueList because it's not possible to
+		// pass a sort functor to qHeapSort
+		std::list<KService*> selectionServices;
+		QPtrListIterator<KService> it(mServices);
+		for (; it.current(); ++it) {
+			KService* service=it.current();
+			if (!onlyOneURL && !service->allowMultipleFiles()) {
+				continue;
+			}
+			
+			QStringList serviceTypes=service->serviceTypes();
+			if (isSubSetOf(mimeTypes, serviceTypes)) {
+				selectionServices.push_back(service);
+			}
+		}
+		selectionServices.sort(compareKServicePtrByName);
+		
+		return new ExternalToolContext(parent, selectionServices, urls);
+	}
+
+};
+
+
+// Helper function for ctor
+void loadDesktopFiles(QDict<KDesktopFile>& dict, const QString& dirString) {
+	QDir dir(dirString);
+	QStringList list=dir.entryList("*.desktop");
+	QStringList::ConstIterator it=list.begin();
+	for (; it!=list.end(); ++it) {
+		KDesktopFile* df=new KDesktopFile( dir.filePath(*it) );
+		dict.insert(*it, df);
+	}
+}
+
+inline QString addSlash(const QString& _str) {
+	QString str(_str);
+	if (str.right(1)!="/") str.append('/');
+	return str;
+}
+
+ExternalToolManager::ExternalToolManager() {
+	d=new ExternalToolManagerPrivate;
+
+	// Getting dirs
+	d->mUserToolDir=KGlobal::dirs()->saveLocation("appdata", "tools");
+	d->mUserToolDir=addSlash(d->mUserToolDir);
+	Q_ASSERT(!d->mUserToolDir.isEmpty());
+	LOG("d->mUserToolDir:" << d->mUserToolDir);
+	
+	QStringList dirs=KGlobal::dirs()->findDirs("appdata", "tools");
+	LOG("dirs:" << dirs.join(","));
+
+	// Loading desktop files
+	QDict<KDesktopFile> systemDesktopFiles;
+	QStringList::ConstIterator it;
+	for (it=dirs.begin(); it!=dirs.end(); ++it) {
+		if (addSlash(*it)==d->mUserToolDir) {
+			LOG("skipping " << *it);
+			continue;
+		}
+		LOG("loading system desktop files from " << *it);
+		loadDesktopFiles(systemDesktopFiles, *it);
+	}
+	QDict<KDesktopFile> userDesktopFiles;
+	loadDesktopFiles(userDesktopFiles, d->mUserToolDir);
+
+	// Merge system and user desktop files into our KDesktopFile dictionary
+	d->mDesktopFiles=systemDesktopFiles;
+	d->mDesktopFiles.setAutoDelete(true);
+	QDictIterator<KDesktopFile> itDict(userDesktopFiles);
+	
+	for (; itDict.current(); ++itDict) {
+		QString name=itDict.currentKey();
+		KDesktopFile* df=itDict.current();
+		if (d->mDesktopFiles.find(name)) {
+			d->mDesktopFiles.remove(name);
+		}
+		if (df->readBoolEntry("Hidden")) {
+			delete df;
+		} else {
+			d->mDesktopFiles.insert(name, df);
+		}
+	}
+
+	d->mServices.setAutoDelete(true);
+	updateServices();
+}
+
+
+ExternalToolManager::~ExternalToolManager() {
+	delete d;
+}
+
+	
+ExternalToolManager* ExternalToolManager::instance() {
+	static ExternalToolManager manager;
+	return &manager;
+}
+
+
+void ExternalToolManager::updateServices() {
+	d->mServices.clear();
+	QDictIterator<KDesktopFile> it(d->mDesktopFiles);
+	for (; it.current(); ++it) {
+		KDesktopFile* desktopFile=it.current();
+		// If sync() is not called, KService does not read up to date content
+		desktopFile->sync();
+		KService* service=new KService(desktopFile);
+		d->mServices.append(service);
+	}
+}
+
+
+QDict<KDesktopFile>& ExternalToolManager::desktopFiles() const {
+	return d->mDesktopFiles;
+}
+
+
+void ExternalToolManager::hideDesktopFile(KDesktopFile* desktopFile) {
+	QFileInfo fi(desktopFile->fileName());
+	QString name=QString("%1.desktop").arg( fi.baseName(true) );
+	d->mDesktopFiles.take(name);
+	
+	if (desktopFile->isReadOnly()) {
+		delete desktopFile;
+		desktopFile=new KDesktopFile(d->mUserToolDir + "/" + name, false);
+	}
+	desktopFile->writeEntry("Hidden", true);
+	desktopFile->sync();
+	delete desktopFile;
+}
+
+
+KDesktopFile* ExternalToolManager::editSystemDesktopFile(const KDesktopFile* desktopFile) {
+	Q_ASSERT(desktopFile);
+	QFileInfo fi(desktopFile->fileName());
+
+	QString name=fi.baseName(true);
+	d->mDesktopFiles.remove(QString("%1.desktop").arg(name));
+	
+	return createUserDesktopFile(name);
+}
+
+
+KDesktopFile* ExternalToolManager::createUserDesktopFile(const QString& name) {
+	Q_ASSERT(!name.isEmpty());
+	KDesktopFile* desktopFile=new KDesktopFile(
+		d->mUserToolDir + "/" + name + ".desktop", false);
+	d->mDesktopFiles.insert(QString("%1.desktop").arg(name), desktopFile);	
+
+	return desktopFile;
+}
+
+
+ExternalToolContext* ExternalToolManager::createContext(
+	QObject* parent, const KFileItemList* items)
+{
+	KURL::List urls;
+	QStringList mimeTypes;
+
+	// Create our URL list and a list of the different mime types present in
+	// the selection
+	QPtrListIterator<KFileItem> it(*items);
+	for (; it.current(); ++it) {
+		urls.append(it.current()->url());
+		QString mimeType=it.current()->mimetype();
+		if (!mimeTypes.contains(mimeType)) {
+			mimeTypes.append(mimeType);
+		}
+	}
+
+	return d->createContextInternal(parent, urls, mimeTypes);
+}
+
+
+ExternalToolContext* ExternalToolManager::createContext(
+	QObject* parent, const KURL& url)
+{
+	KURL::List urls;
+	QStringList mimeTypes;
+	
+	urls.append(url);
+	QString mimeType=KMimeType::findByURL(url, 0, url.isLocalFile(), true)->name();
+	mimeTypes.append(mimeType);
+	
+	return d->createContextInternal(parent, urls, mimeTypes);
+}
+
+
+} // namespace