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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitce4a32fe52ef09d8f5ff1dd22c001110902b60a2 (patch)
tree5ac38a06f3dde268dc7927dc155896926aaf7012 /kio/bookmarks/kbookmark.h
downloadtdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.tar.gz
tdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+// -*- c-basic-offset: 4; indent-tabs-mode:nil -*-
+// vim: set ts=4 sts=4 sw=4 et:
+/* This file is part of the KDE libraries
+ Copyright (C) 2000 David Faure <faure@kde.org>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License version 2 as published by the Free Software Foundation.
+
+ This library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+#ifndef __kbookmark_h
+#define __kbookmark_h
+
+#include <qstring.h>
+#include <qvaluelist.h>
+#include <qdom.h>
+#include <kurl.h>
+
+class KBookmarkManager;
+class KBookmarkGroup;
+
+class KIO_EXPORT KBookmark
+{
+ friend class KBookmarkGroup;
+public:
+ enum MetaDataOverwriteMode {
+ OverwriteMetaData, DontOverwriteMetaData
+ };
+
+ KBookmark( ) {}
+ KBookmark( QDomElement elem ) : element(elem) {}
+
+ static KBookmark standaloneBookmark( const QString & text, const KURL & url, const QString & icon = QString::null );
+
+ /**
+ * Whether the bookmark is a group or a normal bookmark
+ */
+ bool isGroup() const;
+
+ /**
+ * Whether the bookmark is a separator
+ */
+ bool isSeparator() const;
+
+ /**
+ * @return true if this is a null bookmark. This will never
+ * be the case for a real bookmark (in a menu), but it's used
+ * for instance as the end condition for KBookmarkGroup::next()
+ */
+ bool isNull() const {return element.isNull();}
+
+ /**
+ * @return true if bookmark is contained by a QDomDocument,
+ * if not it is most likely that it has become separated and
+ * is thus invalid and/or has been deleted from the bookmarks.
+ * @since 3.2
+ */
+ bool hasParent() const;
+
+ /**
+ * Text shown for the bookmark
+ * If bigger than 40, the text is shortened by
+ * replacing middle characters with "..." (see KStringHandler::csqueeze)
+ */
+ QString text() const;
+ /**
+ * Text shown for the bookmark, not truncated.
+ * You should not use this - this is mainly for keditbookmarks.
+ */
+ QString fullText() const;
+ /**
+ * URL contained by the bookmark
+ */
+ KURL url() const;
+ /**
+ * @return the pixmap file for this bookmark
+ * (i.e. the name of the icon)
+ */
+ QString icon() const;
+
+ /**
+ * @return the group containing this bookmark
+ */
+ KBookmarkGroup parentGroup() const;
+
+ /**
+ * Convert this to a group - do this only if
+ * isGroup() returns true.
+ */
+ KBookmarkGroup toGroup() const;
+
+ /**
+ * Return the "address" of this bookmark in the whole tree.
+ * This is used when telling other processes about a change
+ * in a given bookmark. The encoding of the address is "/4/2", for
+ * instance, to design the 2nd child inside the 4th child of the root bk.
+ */
+ QString address() const;
+
+ // Hard to decide. Good design would imply that each bookmark
+ // knows about its manager, so that there can be several managers.
+ // But if we say there is only one manager (i.e. set of bookmarks)
+ // per application, then KBookmarkManager::self() is much easier.
+ //KBookmarkManager * manager() const { return m_manager; }
+
+ /**
+ * @internal for KEditBookmarks
+ */
+ QDomElement internalElement() const { return element; }
+
+ /**
+ * Updates the bookmarks access metadata
+ * Call when a user accesses the bookmark
+ * @since 3.2
+ */
+ void updateAccessMetadata();
+
+ // Utility functions (internal)
+
+ /**
+ * @return address of parent
+ */
+ static QString parentAddress( const QString & address )
+ { return address.left( address.findRev('/') ); }
+
+ /**
+ * @return position in parent (e.g. /4/5/2 -> 2)
+ */
+ static uint positionInParent( const QString & address )
+ { return address.mid( address.findRev('/') + 1 ).toInt(); }
+
+ /**
+ * @return address of previous sibling (e.g. /4/5/2 -> /4/5/1)
+ * Returns QString::null for a first child
+ */
+ static QString previousAddress( const QString & address )
+ {
+ uint pp = positionInParent(address);
+ return pp>0 ? parentAddress(address) + '/' + QString::number(pp-1) : QString::null;
+ }
+
+ /**
+ * @return address of next sibling (e.g. /4/5/2 -> /4/5/3)
+ * This doesn't check whether it actually exists
+ */
+ static QString nextAddress( const QString & address )
+ { return parentAddress(address) + '/' + QString::number(positionInParent(address)+1); }
+
+ /**
+ * @return the common parent of both addresses which
+ * has the greatest depth
+ * @since 3.5
+ */
+ static QString commonParent(QString A, QString B);
+
+ /**
+ * Get the value of a specific metadata item.
+ * @param key Name of the metadata item
+ * @return Value of the metadata item. QString::null is returned in case
+ * the specified key does not exist.
+ * @since 3.4
+ */
+ QString metaDataItem( const QString &key ) const;
+
+ /**
+ * Change the value of a specific metadata item, or create the given item
+ * if it doesn't exist already.
+ * @param key Name of the metadata item to change
+ * @param value Value to use for the specified metadata item
+ * @param mode Whether to overwrite the item's value if it exists already or not.
+ * @since 3.4
+ */
+ void setMetaDataItem( const QString &key, const QString &value, MetaDataOverwriteMode mode = OverwriteMetaData );
+
+protected:
+ QDomElement element;
+ // Note: you can't add new member variables here.
+ // The KBookmarks are created on the fly, as wrappers
+ // around internal QDomElements. Any additional information
+ // has to be implemented as an attribute of the QDomElement.
+
+private:
+ bool hasMetaData() const;
+ static QString left(const QString & str, uint len);
+};
+
+/**
+ * A group of bookmarks
+ */
+class KIO_EXPORT KBookmarkGroup : public KBookmark
+{
+public:
+ /**
+ * Create an invalid group. This is mostly for use in QValueList,
+ * and other places where we need a null group.
+ * Also used as a parent for a bookmark that doesn't have one
+ * (e.g. Netscape bookmarks)
+ */
+ KBookmarkGroup();
+
+ /**
+ * Create a bookmark group as specified by the given element
+ */
+ KBookmarkGroup( QDomElement elem );
+
+ /**
+ * Much like KBookmark::address, but caches the
+ * address into m_address.
+ */
+ QString groupAddress() const;
+
+ /**
+ * @return true if the bookmark folder is opened in the bookmark editor
+ */
+ bool isOpen() const;
+
+ /**
+ * Return the first child bookmark of this group
+ */
+ KBookmark first() const;
+ /**
+ * Return the prevous sibling of a child bookmark of this group
+ * @param current has to be one of our child bookmarks.
+ */
+ KBookmark previous( const KBookmark & current ) const;
+ /**
+ * Return the next sibling of a child bookmark of this group
+ * @param current has to be one of our child bookmarks.
+ */
+ KBookmark next( const KBookmark & current ) const;
+
+ /**
+ * Create a new bookmark folder, as the last child of this group
+ * @param mgr the manager of the bookmark
+ * @param text for the folder. If empty, the user will be queried for it.
+ * @param emitSignal if true emit KBookmarkNotifier signal
+ */
+ KBookmarkGroup createNewFolder( KBookmarkManager* mgr, const QString & text = QString::null, bool emitSignal = true );
+ /**
+ * Create a new bookmark separator
+ * Don't forget to use KBookmarkManager::self()->emitChanged( parentBookmark );
+ */
+ KBookmark createNewSeparator();
+
+ /**
+ * Create a new bookmark, as the last child of this group
+ * Don't forget to use KBookmarkManager::self()->emitChanged( parentBookmark );
+ * @param mgr the manager of the bookmark
+ * @param bm the bookmark to add
+ * @param emitSignal if true emit KBookmarkNotifier signal
+ * @since 3.4
+ */
+ KBookmark addBookmark( KBookmarkManager* mgr, const KBookmark &bm, bool emitSignal = true );
+
+ /**
+ * Create a new bookmark, as the last child of this group
+ * Don't forget to use KBookmarkManager::self()->emitChanged( parentBookmark );
+ * @param mgr the manager of the bookmark
+ * @param text for the bookmark
+ * @param url the URL that the bookmark points to
+ * @param icon the name of the icon to associate with the bookmark. A suitable default
+ * will be determined from the URL if not specified.
+ * @param emitSignal if true emit KBookmarkNotifier signal
+ */
+ KBookmark addBookmark( KBookmarkManager* mgr, const QString & text, const KURL & url, const QString & icon = QString::null, bool emitSignal = true );
+
+ /**
+ * Moves @p item after @p after (which should be a child of ours).
+ * If item is null, @p item is moved as the first child.
+ * Don't forget to use KBookmarkManager::self()->emitChanged( parentBookmark );
+ */
+ bool moveItem( const KBookmark & item, const KBookmark & after );
+
+ /**
+ * Delete a bookmark - it has to be one of our children !
+ * Don't forget to use KBookmarkManager::self()->emitChanged( parentBookmark );
+ */
+ void deleteBookmark( KBookmark bk );
+
+ /**
+ * @return true if this is the toolbar group
+ */
+ bool isToolbarGroup() const;
+ /**
+ * @internal
+ */
+ QDomElement findToolbar() const;
+
+ /**
+ * @return the list of urls of bookmarks at top level of the group
+ * @since 3.2
+ */
+ QValueList<KURL> groupUrlList() const;
+
+protected:
+ QDomElement nextKnownTag( QDomElement start, bool goNext ) const;
+
+private:
+ mutable QString m_address;
+ // Note: you can't add other member variables here, except for caching info.
+ // The KBookmarks are created on the fly, as wrappers
+ // around internal QDomElements. Any additional information
+ // has to be implemented as an attribute of the QDomElement.
+};
+
+/**
+ * @since 3.2
+ */
+class KIO_EXPORT KBookmarkGroupTraverser {
+protected:
+ virtual ~KBookmarkGroupTraverser() { ; }
+ void traverse(const KBookmarkGroup &);
+ virtual void visit(const KBookmark &) { ; }
+ virtual void visitEnter(const KBookmarkGroup &) { ; }
+ virtual void visitLeave(const KBookmarkGroup &) { ; }
+private:
+ class KBookmarkGroupTraverserPrivate *d;
+};
+
+#endif