158 lines
4.2 KiB
C++
158 lines
4.2 KiB
C++
/**
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* @file llviewmodel.cpp
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* @author Nat Goodspeed
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* @date 2008-08-08
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* @brief Implementation for llviewmodel.
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*
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* $LicenseInfo:firstyear=2008&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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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 Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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// Precompiled header
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#include "linden_common.h"
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// associated header
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#include "llviewmodel.h"
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// STL headers
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// std headers
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// external library headers
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// other Linden headers
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///
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LLViewModel::LLViewModel()
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: mDirty(false)
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{
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}
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/// Instantiate an LLViewModel with an existing data value
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LLViewModel::LLViewModel(const LLSD& value)
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: mDirty(false)
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{
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setValue(value);
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}
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/// Update the stored value
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void LLViewModel::setValue(const LLSD& value)
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{
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mValue = value;
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mDirty = true;
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}
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LLSD LLViewModel::getValue() const
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{
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return mValue;
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}
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////////////////////////////////////////////////////////////////////////////
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///
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LLTextViewModel::LLTextViewModel()
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: LLViewModel(false),
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mUpdateFromDisplay(false)
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{
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}
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/// Instantiate an LLViewModel with an existing data value
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LLTextViewModel::LLTextViewModel(const LLSD& value)
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: LLViewModel(value),
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mUpdateFromDisplay(false)
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{
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}
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/// Update the stored value
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void LLTextViewModel::setValue(const LLSD& value)
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{
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LLViewModel::setValue(value);
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mDisplay = utf8str_to_wstring(value.asString());
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// mDisplay and mValue agree
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mUpdateFromDisplay = false;
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}
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void LLTextViewModel::setDisplay(const LLWString& value)
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{
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// This is the strange way to alter the value. Normally we'd setValue()
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// and do the utf8str_to_wstring() to get the corresponding mDisplay
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// value. But a text editor might want to edit the display string
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// directly, then convert back to UTF8 on commit.
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mDisplay = value;
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mDirty = true;
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// Don't immediately convert to UTF8 -- do it lazily -- we expect many
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// more setDisplay() calls than getValue() calls. Just flag that it needs
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// doing.
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mUpdateFromDisplay = true;
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}
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LLSD LLTextViewModel::getValue() const
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{
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// Has anyone called setDisplay() since the last setValue()? If so, have
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// to convert mDisplay back to UTF8.
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if (mUpdateFromDisplay)
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{
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// The fact that we're lazily updating fields in this object should be
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// transparent to clients, which is why this method is left
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// conventionally const. Nor do we particularly want to make these
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// members mutable. Just cast away constness in this one place.
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LLTextViewModel* nthis = const_cast<LLTextViewModel*>(this);
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nthis->mUpdateFromDisplay = false;
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nthis->mValue = wstring_to_utf8str(mDisplay);
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}
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return LLViewModel::getValue();
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}
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////////////////////////////////////////////////////////////////////////////
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LLListViewModel::LLListViewModel(const LLSD& values)
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: LLViewModel()
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{
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}
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void LLListViewModel::addColumn(const LLSD& column, EAddPosition pos)
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{
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}
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void LLListViewModel::clearColumns()
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{
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}
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void LLListViewModel::setColumnLabel(const std::string& column, const std::string& label)
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{
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}
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LLScrollListItem* LLListViewModel::addElement(const LLSD& value, EAddPosition pos,
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void* userdata)
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{
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return NULL;
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}
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LLScrollListItem* LLListViewModel::addSimpleElement(const std::string& value, EAddPosition pos,
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const LLSD& id)
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{
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return NULL;
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}
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void LLListViewModel::clearRows()
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{
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}
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void LLListViewModel::sortByColumn(const std::string& name, bool ascending)
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{
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}
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