220 lines
6.9 KiB
C++
220 lines
6.9 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org 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
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef _TEMPLATE_SCANNER_HXX
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#define _TEMPLATE_SCANNER_HXX
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#include "tools/AsynchronousTask.hxx"
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#include "sddllapi.h"
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#include <ucbhelper/content.hxx>
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#include <tools/string.hxx>
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#include "com/sun/star/uno/Reference.hxx"
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#include <vector>
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#include <boost/scoped_ptr.hpp>
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namespace com { namespace sun { namespace star { namespace ucb {
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class XContent;
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class XCommandEnvironment;
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} } } }
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namespace com { namespace sun { namespace star { namespace sdbc {
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class XResultSet;
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} } } }
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namespace sd {
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/** Representation of a template or layout file.
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*/
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class TemplateEntry
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{
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public:
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TemplateEntry (const String& rsTitle, const String& rsPath)
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: msTitle(rsTitle), msPath(rsPath) {}
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String msTitle;
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String msPath;
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};
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/** Representation of a template or layout folder.
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*/
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class TemplateDir
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{
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public:
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TemplateDir (const String& rsRegion, const String& rsUrl )
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: msRegion(rsRegion), msUrl(rsUrl), maEntries() {}
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String msRegion;
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String msUrl;
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::std::vector<TemplateEntry*> maEntries;
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};
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/** This class scans the template folders for impress templates. There are
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two ways to use this class.
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1. The old and deprecated way is to call Scan() to scan all templates
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and collect the supported ones in a tree structure. This structure is
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returned by GetFolderList().
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2. The new way implements the AsynchronousTask interface. Call
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RunNextStep() as long HasNextStep() returns <TRUE/>. After every step
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GetLastAddedEntry() returns the template that was scanned (and has a
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supported format) last. When a step does not add a new template then
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the value of the previous step is returned.
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*/
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class SD_DLLPUBLIC TemplateScanner
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: public ::sd::tools::AsynchronousTask
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{
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public:
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/** Create a new template scanner and prepare but do not execute the scanning.
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*/
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TemplateScanner (void);
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/** The destructor deletes any remaining entries of the local list of
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templates.
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*/
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virtual ~TemplateScanner (void);
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/** Execute the actual scanning of templates. When this method
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terminates the result can be obtained by calling the
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<member>GetTemplateList</member> method.
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*/
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void Scan (void);
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/** Return the list of template folders. It lies in the responsibility
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of the caller to take ownership of some or all entries and remove
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them from the returned list. All entries that remain until the
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destructor is called will be destroyed.
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*/
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std::vector<TemplateDir*>& GetFolderList (void);
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/** Implementation of the AsynchronousTask interface method.
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*/
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virtual void RunNextStep (void);
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/** Implementation of the AsynchronousTask interface method.
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*/
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virtual bool HasNextStep (void);
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/** Return the TemplateDir object that was last added to
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mpTemplateDirectory.
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@return
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<NULL/> is returned either before the template scanning is
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started or after it has ended.
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*/
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const TemplateEntry* GetLastAddedEntry (void) const;
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private:
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/** The current state determines which step will be executed next by
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RunNextStep().
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*/
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enum State {
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INITIALIZE_SCANNING,
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INITIALIZE_FOLDER_SCANNING,
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GATHER_FOLDER_LIST,
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SCAN_FOLDER,
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INITIALIZE_ENTRY_SCAN,
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SCAN_ENTRY,
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DONE,
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ERROR
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};
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State meState;
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::ucbhelper::Content maFolderContent;
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TemplateDir* mpTemplateDirectory;
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/** The data structure that is to be filled with information about the
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template files.
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*/
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std::vector<TemplateDir*> maFolderList;
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/** This member points into the maFolderList to the member that was most
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recently added.
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*/
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TemplateEntry* mpLastAddedEntry;
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/** The folders that are collected by GatherFolderList().
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*/
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class FolderDescriptorList;
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::boost::scoped_ptr<FolderDescriptorList> mpFolderDescriptors;
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/** Set of state variables used by the methods
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InitializeFolderScanning(), GatherFolderList(), ScanFolder(),
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InitializeEntryScanning(), and ScanEntry().
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*/
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com::sun::star::uno::Reference<com::sun::star::ucb::XContent> mxTemplateRoot;
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com::sun::star::uno::Reference<com::sun::star::ucb::XCommandEnvironment> mxFolderEnvironment;
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com::sun::star::uno::Reference<com::sun::star::ucb::XCommandEnvironment> mxEntryEnvironment;
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com::sun::star::uno::Reference<com::sun::star::sdbc::XResultSet> mxFolderResultSet;
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com::sun::star::uno::Reference<com::sun::star::sdbc::XResultSet> mxEntryResultSet;
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/** Obtain the root folder of the template folder hierarchy. The result
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is stored in mxTemplateRoot for later use.
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*/
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State GetTemplateRoot (void);
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/** Initialize the scanning of folders. This is called exactly once.
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@return
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Returns one of the two states ERROR or GATHER_FOLDER_LIST.
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*/
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State InitializeFolderScanning (void);
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/** Collect all available top-level folders in an ordered list which can
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then be processed by ScanFolder().
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@return
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Returns one of the two states ERROR or SCAN_FOLDER.
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*/
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State GatherFolderList (void);
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/** From the list of top-level folders collected by GatherFolderList()
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the one with highest priority is processed.
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@return
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Returns one of the states ERROR, DONE, or INITILIZE_ENTRY_SCAN.
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*/
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State ScanFolder (void);
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/** Initialize the scanning of entries of a top-level folder.
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@return
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Returns one of the states ERROR or SCAN_ENTRY.
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*/
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State InitializeEntryScanning (void);
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/** Scan one entry. When this entry matches the recognized template
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types it is appended to the result set.
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@return
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Returns one of the states ERROR, SCAN_ENTRY, or SCAN_FOLDER.
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*/
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State ScanEntry (void);
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};
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} // end of namespace sd
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#endif
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