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Diffstat (limited to 'uui/source/fltdlg.cxx')
| -rw-r--r-- | uui/source/fltdlg.cxx | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/uui/source/fltdlg.cxx b/uui/source/fltdlg.cxx new file mode 100644 index 000000000..748a2dc42 --- /dev/null +++ b/uui/source/fltdlg.cxx @@ -0,0 +1,209 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include "fltdlg.hxx" + +#include <com/sun/star/util/XStringWidth.hpp> +#include <cppuhelper/implbase.hxx> +#include <tools/urlobj.hxx> + +#include <osl/file.hxx> + +namespace uui +{ +/*-************************************************************************************************************ + @short initialize filter dialog with start values + @descr We set some necessary information on these instance for later working and create internal structures. + After construction user should call "SetFilters()" and "SetURL()" to fill listbox with selectable filter + names and set file name of file, which should be used for selected filter. + + @seealso method SetFilters() + @seealso method SetURL() + + @param "pParentWindow" , parent window for dialog + @threadsafe no +*/ /*-*************************************************************************************************************/ +FilterDialog::FilterDialog(weld::Window* pParentWindow) + : GenericDialogController(pParentWindow, "uui/ui/filterselect.ui", "FilterSelectDialog") + , m_pFilterNames(nullptr) + , m_xFtURL(m_xBuilder->weld_label("url")) + , m_xLbFilters(m_xBuilder->weld_tree_view("filters")) +{ + m_xLbFilters->set_size_request(m_xLbFilters->get_approximate_digit_width() * 42, + m_xLbFilters->get_height_rows(15)); +} + +FilterDialog::~FilterDialog() {} + +/*-************************************************************************************************************ + @short set file name on dialog control + @descr We convert given URL (it must be a URL!) into valid file name and show it on our dialog. + @param "sURL", URL for showing + @threadsafe no +*/ /*-*************************************************************************************************************/ +void FilterDialog::SetURL(const OUString& sURL) +{ + // convert it and use given pure string as fallback if conversion failed + m_xFtURL->set_label(impl_buildUIFileName(sURL)); +} + +/*-************************************************************************************************************ + @short change list of filter names + @descr We save given pointer internal and use it to fill our listbox with given names. + Saved list pointer is used on method "AskForFilter()" too, to find user selected item + and return pointer into these list as result of operation. + So it's possible to call dialog again and again for different or same filter list + and ask user for his decision by best performance! + + @attention Don't free memory of given list after this call till object will die ... or + you call "ChangeFilters( NULL )"! Then we forget it too. + + @seealso method AskForFilter() + + @param "pFilterNames", pointer to list of filter names, which should be used for later operations. + @onerror We clear list box and forget our currently set filter information completely! + @threadsafe no +*/ /*-*************************************************************************************************************/ +void FilterDialog::ChangeFilters(const FilterNameList* pFilterNames) +{ + m_pFilterNames = pFilterNames; + m_xLbFilters->clear(); + if (m_pFilterNames != nullptr) + { + for (const auto& rItem : *m_pFilterNames) + { + m_xLbFilters->append_text(rItem.sUI); + } + } +} + +/*-************************************************************************************************************ + @short ask user for his decision + @descr We show the dialog and if user finish it with "OK" - we try to find selected item in internal saved + name list (which you must set in "ChangeFilters()"!). If we return sal_True as result, you can use out + parameter "pSelectedItem" as pointer into your FilterNameList to get selected item really ... + but if we return sal_False ... user has cancel the dialog ... you should not do that. pSelectedItem is not + set to any valid value then. We don't change them ... + + @seealso method ChangeFilters() + + @param "pSelectedItem", returns result of selection as pointer into set list of filter names + (valid for function return sal_True only!) + @return true => pSelectedItem parameter points into name list and represent use decision + false => use has cancelled dialog (pSelectedItem is not valid then!) + + @onerror We return false ... but don't change pSelectedItem! + @threadsafe no +*/ /*-*************************************************************************************************************/ +bool FilterDialog::AskForFilter(FilterNameListPtr& pSelectedItem) +{ + bool bSelected = false; + + if (m_pFilterNames != nullptr) + { + if (m_xDialog->run() == RET_OK) + { + OUString sEntry = m_xLbFilters->get_selected_text(); + if (!sEntry.isEmpty()) + { + int nPos = m_xLbFilters->get_selected_index(); + if (nPos < static_cast<int>(m_pFilterNames->size())) + { + pSelectedItem = m_pFilterNames->begin(); + pSelectedItem += nPos; + bSelected = (pSelectedItem != m_pFilterNames->end()); + } + } + } + } + + return bSelected; +} + +namespace +{ +/*-************************************************************************************************************ + @short helper class to calculate length of given string + @descr Instances of it can be used as callback for INetURLObject::getAbbreviated() method to build + short URLs to show it on GUI. We use in ctor set OutputDevice to call special VCL method ... + + @seealso method OutputDevice::GetTextWidth() + @seealso method InetURLObject::getAbbreviated() + @threadsafe no +*/ /*-*************************************************************************************************************/ +class StringCalculator : public ::cppu::WeakImplHelper<css::util::XStringWidth> +{ +public: + explicit StringCalculator(weld::Widget* pDevice) + : m_pDevice(pDevice) + { + } + + sal_Int32 SAL_CALL queryStringWidth(const OUString& sString) override + { + return static_cast<sal_Int32>(m_pDevice->get_pixel_size(sString).Width()); + } + +private: + weld::Widget* m_pDevice; +}; +} + +/*-************************************************************************************************************ + @short try to build short name of given URL to show it n GUI + @descr We detect type of given URL automatically and build this short name depend on this type ... + If we couldn't make it right we return full given string without any changes ... + + @seealso method InetURLObject::getAbbreviated() + + @param "sName", file name + @return A short file name ... + + @onerror We return given name without any changes. + @threadsafe no +*/ /*-*************************************************************************************************************/ +OUString FilterDialog::impl_buildUIFileName(const OUString& sName) +{ + OUString sShortName(sName); + + if (osl::FileBase::getSystemPathFromFileURL(sName, sShortName) == osl::FileBase::E_None) + + { + // it's a system file... build short name by using osl functionality + } + else + { + // otherwise it's really a URL... build short name by using INetURLObject + css::uno::Reference<css::util::XStringWidth> xStringCalculator( + new StringCalculator(m_xFtURL.get())); + if (xStringCalculator.is()) + { + INetURLObject aBuilder(sName); + Size aSize = m_xLbFilters->get_preferred_size(); + sShortName = aBuilder.getAbbreviated(xStringCalculator, aSize.Width(), + INetURLObject::DecodeMechanism::Unambiguous); + } + } + + return sShortName; +} + +} // namespace uui + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |