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