TreeView.cpp

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/*
        Copyright 2003 Joseph Alvis

    This file is part of Aswang.

    Aswang 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, either version 3 of the License, or
    (at your option) any later version.

    Aswang 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 Aswang.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "TreeView.h"

using namespace aswang;

HTREEITEM TreeView::AddTextItem(const AswangStr &text,HTREEITEM treeParent,HTREEITEM insertAfter) {
        if(hWnd!=NULL) {
                TVINSERTSTRUCT tvis;
                tvis.hInsertAfter=insertAfter;
                tvis.hParent=treeParent;
                tvis.itemex.mask = TVIF_TEXT;
                tvis.itemex.pszText = (_TCHAR *)text.c_str();
                return (HTREEITEM)SendMessage(hWnd,TVM_INSERTITEM,0,(LPARAM)&tvis);
        }
        return NULL;
}

AswangStr TreeView::GetItemText(HTREEITEM item) {
        AswangStr retstr;
        if(hWnd!=NULL) {
                unsigned long i;
                for(i=100;i<1024;i*=2) {
                        _TCHAR *buf = new _TCHAR[i];
                        TVITEMEX tex;
                        buf[0]=0;
                        tex.hItem = item;
                        tex.pszText = buf;
                        tex.cchTextMax = i;
                        tex.mask = TVIF_TEXT;
                        SendMessage(hWnd,TVM_GETITEM,0,(LPARAM)&tex);
                        retstr=buf;
                        delete buf;
                        if(retstr.length()<i-1)
                                break;
                }
        }
        return retstr;
}

void TreeView::DeleteItem(HTREEITEM item) {
        if(hWnd!=NULL)
                SendMessage(hWnd,TVM_DELETEITEM,0,(LPARAM)item);
}