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/**
* @file llfolderviewmodel.cpp
* @brief Implementation of the view model collection of classes.
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llfolderviewmodel.h"
#include "lltrans.h"
// LLFolderViewModelItemCommon
LLFolderViewModelItemCommon::LLFolderViewModelItemCommon(LLFolderViewModelInterface& root_view_model)
: mSortVersion(-1),
mPassedFilter(true),
mPassedFolderFilter(true),
mStringMatchOffsetFilter(std::string::npos),
mStringFilterSize(0),
mFolderViewItem(NULL),
mLastFilterGeneration(-1),
mLastFolderFilterGeneration(-1),
mMarkedDirtyGeneration(-1),
mMostFilteredDescendantGeneration(-1),
mParent(NULL),
mRootViewModel(root_view_model)
{
mChildren.clear(); //???
}
LLFolderViewModelItemCommon::~LLFolderViewModelItemCommon()
{
// Children don't belong to model, but to LLFolderViewItem, just mark them as having no parent
std::for_each(mChildren.begin(), mChildren.end(), [](LLFolderViewModelItem* c) {c->setParent(NULL); });
mChildren.clear();
// Don't leave dead pointer in parent
if (mParent)
{
mParent->removeChild(this);
mParent = NULL;
}
}
void LLFolderViewModelItemCommon::dirtyFilter()
{
if (mMarkedDirtyGeneration < 0)
{
mMarkedDirtyGeneration = mLastFilterGeneration;
}
mLastFilterGeneration = -1;
mLastFolderFilterGeneration = -1;
// bubble up dirty flag all the way to root
if (mParent)
{
mParent->dirtyFilter();
}
}
void LLFolderViewModelItemCommon::dirtyDescendantsFilter()
{
mMostFilteredDescendantGeneration = -1;
if (mParent)
{
mParent->dirtyDescendantsFilter();
}
}
//virtual
void LLFolderViewModelItemCommon::addChild(LLFolderViewModelItem* child)
{
mChildren.push_back(child);
child->setParent(this);
dirtyFilter();
requestSort();
}
//virtual
void LLFolderViewModelItemCommon::removeChild(LLFolderViewModelItem* child)
{
mChildren.remove(child);
child->setParent(NULL);
dirtyDescendantsFilter();
dirtyFilter();
}
//virtual
void LLFolderViewModelItemCommon::clearChildren()
{
// As this is cleaning the whole list of children wholesale, we do need to delete the pointed objects
// This is different and not equivalent to calling removeChild() on each child
std::for_each(mChildren.begin(), mChildren.end(), DeletePointer());
mChildren.clear();
dirtyDescendantsFilter();
dirtyFilter();
}
void LLFolderViewModelItemCommon::setPassedFilter(bool passed, S32 filter_generation, std::string::size_type string_offset /*= std::string::npos*/, std::string::size_type string_size /*= 0*/)
{
mPassedFilter = passed;
mLastFilterGeneration = filter_generation;
mStringMatchOffsetFilter = string_offset;
mStringFilterSize = string_size;
mMarkedDirtyGeneration = -1;
}
void LLFolderViewModelItemCommon::setPassedFolderFilter(bool passed, S32 filter_generation)
{
mPassedFolderFilter = passed;
mLastFolderFilterGeneration = filter_generation;
}
//virtual
bool LLFolderViewModelItemCommon::potentiallyVisible()
{
return passedFilter() // we've passed the filter
|| (getLastFilterGeneration() < mRootViewModel.getFilter().getFirstSuccessGeneration()) // or we don't know yet
|| descendantsPassedFilter();
}
//virtual
bool LLFolderViewModelItemCommon::passedFilter(S32 filter_generation /*= -1*/)
{
if (filter_generation < 0)
{
filter_generation = mRootViewModel.getFilter().getFirstSuccessGeneration();
}
bool passed_folder_filter = mPassedFolderFilter && (mLastFolderFilterGeneration >= filter_generation);
bool passed_filter = mPassedFilter && (mLastFilterGeneration >= filter_generation);
return passed_folder_filter && (passed_filter || descendantsPassedFilter(filter_generation));
}
//virtual
bool LLFolderViewModelItemCommon::descendantsPassedFilter(S32 filter_generation /*= -1*/)
{
if (filter_generation < 0)
{
filter_generation = mRootViewModel.getFilter().getFirstSuccessGeneration();
}
return mMostFilteredDescendantGeneration >= filter_generation;
}
// LLFolderViewModelCommon
LLFolderViewModelCommon::LLFolderViewModelCommon()
: mTargetSortVersion(0),
mFolderView(NULL)
{}
//virtual
void LLFolderViewModelCommon::requestSortAll()
{
// sort everything
mTargetSortVersion++;
}
bool LLFolderViewModelCommon::needsSort(LLFolderViewModelItem* item)
{
return item->getSortVersion() < mTargetSortVersion;
}
std::string LLFolderViewModelCommon::getStatusText()
{
if (!contentsReady() || mFolderView->getViewModelItem()->getLastFilterGeneration() < getFilter().getCurrentGeneration())
{
return LLTrans::getString("Searching");
}
else
{
return getFilter().getEmptyLookupMessage();
}
}
void LLFolderViewModelCommon::filter()
{
static LLCachedControl<S32> filter_visible(*LLUI::getInstance()->mSettingGroups["config"], "FilterItemsMaxTimePerFrameVisible", 10);
getFilter().resetTime(llclamp(filter_visible(), 1, 100));
mFolderView->getViewModelItem()->filter(getFilter());
}
bool LLFolderViewModelItemCommon::hasFilterStringMatch()
{
return mStringMatchOffsetFilter != std::string::npos;
}
std::string::size_type LLFolderViewModelItemCommon::getFilterStringOffset()
{
return mStringMatchOffsetFilter;
}
std::string::size_type LLFolderViewModelItemCommon::getFilterStringSize()
{
return mRootViewModel.getFilter().getFilterStringSize();
}
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