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282 lines
9 KiB
C
282 lines
9 KiB
C
/*
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* PROJECT: ReactOS Applications
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* LICENSE: LGPL - See COPYING in the top level directory
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* FILE: base/applications/msconfig/treeview.c
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* PURPOSE: Tree-View helper functions.
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* COPYRIGHT: Copyright 2011-2012 Hermes BELUSCA - MAITO <hermes.belusca@sfr.fr>
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*/
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// For TVIF_EXPANDEDIMAGE and TVIF_STATEEX (are they really useful ?)
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#if !defined(_WIN32_IE) || (_WIN32_IE < 0x0600)
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#define _WIN32_IE 0x0600
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#endif
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// Fake _WIN32_WINNT to 0x0600 in order to get Vista+ style flags
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#undef _WIN32_WINNT
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#define _WIN32_WINNT 0x0600
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#include "precomp.h"
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#include "treeview.h"
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#include <wingdi.h> // For RGB macro
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void TreeView_Set3StateCheck(HWND hTree)
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{
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LONG_PTR lStyle;
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DWORD dwExStyle;
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DWORD Major, Minor, Build;
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GetComCtl32Version(&Major, &Minor, &Build);
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/*
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* Choose the best way to handle 3-state TreeView checkboxes
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* according to the version of comctl32.dll we are running against.
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*
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* Starting version comctl32 version 6.10 (Vista+, via SxS)
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* we have native 3-state checkboxes available.
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* Only when comctl32 version 5.82 (no SxS) is available,
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* use its build number to know whether we should use 2k3-style
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* or Vista+ style check-boxes.
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*/
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if (Major > 6 || (Major == 6 && Minor >= 10))
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{
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/*
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* NOTE: As explained in the following link:
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* http://stackoverflow.com/questions/31488233/treeview-setextendedstyle-does-not-apply-certain-styles-what-am-i-doing-wrong
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* the TreeView control should have the extended check-box style set
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* *BEFORE* actually setting the check-box window style, because it is
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* only at that step that the TreeView control builds its image list
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* containing the three check-box states. Indeed, if the extended
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* check-box style was applied after setting the window style, then
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* the image list would be already built with the default two states
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* and would not be updated.
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*
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* The MSDN documentation is not very clear on that point.
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*
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* Let me also take this opportunity to document what those
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* extended check-box state styles look like on Windows Vista+ :
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*
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* - TVS_EX_DIMMEDCHECKBOXES creates a grey tone version of the normal checked box state.
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* - TVS_EX_EXCLUSIONCHECKBOXES creates a red 'X'-style cross check-box state.
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* - TVS_EX_PARTIALCHECKBOXES creates a filled box.
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*/
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dwExStyle = TreeView_GetExtendedStyle(hTree);
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TreeView_SetExtendedStyle(hTree, dwExStyle | TVS_EX_PARTIALCHECKBOXES, 0);
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lStyle = GetWindowLongPtr(hTree, GWL_STYLE);
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SetWindowLongPtr(hTree, GWL_STYLE, lStyle | TVS_CHECKBOXES);
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}
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else
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{
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lStyle = GetWindowLongPtr(hTree, GWL_STYLE);
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SetWindowLongPtr(hTree, GWL_STYLE, lStyle | TVS_CHECKBOXES);
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// TODO: Implement this function which should build at runtime
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// the image list with either two or three check-box states
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// (as it is done by the real common control TreeView), instead
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// of storing resource bitmaps.
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//
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// hCheckImageList = CreateCheckBoxImagelist(NULL, TRUE, TRUE, FALSE);
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TreeView_SetImageList(hTree,
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ImageList_LoadBitmap(hInst, (Build >= 6000 ? MAKEINTRESOURCEW(IDB_V7CHECK) : MAKEINTRESOURCEW(IDB_2K3CHECK)), 16, 4, RGB(255, 255, 255)),
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TVSIL_STATE);
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}
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}
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void TreeView_Cleanup(HWND hTree)
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{
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// FIXME: Should we do it always, or only when the custom image list was set?
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ImageList_Destroy(TreeView_GetImageList(hTree, TVSIL_STATE));
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}
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HTREEITEM
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InsertItem(HWND hTree,
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LPCWSTR szName,
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HTREEITEM hParent,
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HTREEITEM hInsertAfter)
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{
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TVINSERTSTRUCTW tvis;
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SecureZeroMemory(&tvis, sizeof(tvis));
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tvis.hParent = hParent;
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tvis.hInsertAfter = hInsertAfter;
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tvis.itemex.mask = TVIF_TEXT;
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tvis.itemex.pszText = (LPWSTR)szName;
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return (tvis.itemex.hItem = TreeView_InsertItem(hTree, &tvis));
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}
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UINT TreeView_GetRealSubtreeState(HWND hTree, HTREEITEM htiSubtreeItem)
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{
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#define OP(a, b) ((a) == (b) ? (a) : 2)
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HTREEITEM htiIterator = TreeView_GetChild(hTree, htiSubtreeItem);
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UINT uRealSubtreeState = TreeView_GetCheckState(hTree, htiIterator);
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/*
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while (htiIterator)
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{
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UINT temp = TreeView_GetCheckState(hTree, htiIterator);
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uRealSubtreeState = OP(uRealSubtreeState, temp);
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htiIterator = TreeView_GetNextSibling(hTree, htiIterator);
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}
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*/
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while ( htiIterator && ( (htiIterator = TreeView_GetNextSibling(hTree, htiIterator)) != NULL ) )
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{
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UINT temp = TreeView_GetCheckState(hTree, htiIterator);
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uRealSubtreeState = OP(uRealSubtreeState, temp);
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}
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return uRealSubtreeState;
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}
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void TreeView_PropagateStateOfItemToParent(HWND hTree, HTREEITEM htiItem)
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{
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HTREEITEM htiParent;
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UINT uGlobalSiblingsCheckState;
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if (!hTree || !htiItem /* || htiItem == TVI_ROOT */)
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return;
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htiParent = TreeView_GetParent(hTree, htiItem);
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if (!htiParent)
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return;
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uGlobalSiblingsCheckState = TreeView_GetRealSubtreeState(hTree, htiParent);
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TreeView_SetItemState(hTree, htiParent, INDEXTOSTATEIMAGEMASK(uGlobalSiblingsCheckState + 1), TVIS_STATEIMAGEMASK);
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TreeView_PropagateStateOfItemToParent(hTree, htiParent);
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return;
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}
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HTREEITEM Tree_Item_Copy(HWND hTree, HTREEITEM hSourceItem, HTREEITEM hParent, HTREEITEM hInsertAfter)
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{
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HTREEITEM htiIterator;
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TVINSERTSTRUCTW tvis;
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WCHAR label[MAX_VALUE_NAME] = L"";
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if (!hTree || !hSourceItem || !hInsertAfter)
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return NULL;
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// 1- Retrieve properties.
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SecureZeroMemory(&tvis, sizeof(tvis));
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tvis.itemex.hItem = hSourceItem; // Handle of the item to be retrieved.
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tvis.itemex.mask = TVIF_HANDLE | TVIF_TEXT | TVIF_STATE |
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TVIF_CHILDREN | TVIF_DI_SETITEM | TVIF_EXPANDEDIMAGE |
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TVIF_IMAGE | TVIF_INTEGRAL | TVIF_PARAM | TVIF_SELECTEDIMAGE | TVIF_STATEEX;
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tvis.itemex.pszText = label;
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tvis.itemex.cchTextMax = MAX_VALUE_NAME;
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TreeView_GetItem(hTree, &tvis.itemex);
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// 2- Now, copy to destination.
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tvis.hParent = hParent;
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tvis.hInsertAfter = hInsertAfter;
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tvis.itemex.stateMask = tvis.itemex.state;
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tvis.itemex.hItem = TreeView_InsertItem(hTree, &tvis);
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for (htiIterator = TreeView_GetChild(hTree, hSourceItem) ; htiIterator ; htiIterator = TreeView_GetNextSibling(hTree, htiIterator))
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Tree_Item_Copy(hTree, htiIterator, tvis.itemex.hItem, TVI_LAST);
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return tvis.itemex.hItem;
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}
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void TreeView_DownItem(HWND hTree, HTREEITEM htiItemToDown)
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{
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HTREEITEM htiNextItem, htiNewItem;
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if (!hTree || !htiItemToDown)
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return;
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htiNextItem = TreeView_GetNextSibling(hTree, htiItemToDown);
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if (!htiNextItem)
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htiNextItem = TVI_LAST;
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htiNewItem = Tree_Item_Copy(hTree, htiItemToDown, TreeView_GetParent(hTree, htiItemToDown), htiNextItem);
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TreeView_DeleteItem(hTree, htiItemToDown); // Delete the item and ALL its children.
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TreeView_SelectItem(hTree, htiNewItem);
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return;
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}
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void TreeView_UpItem(HWND hTree, HTREEITEM htiItemToUp)
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{
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HTREEITEM htiPrevItem, htiPrevPrevItem, htiNewItem;
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if (!hTree || !htiItemToUp)
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return;
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htiPrevItem = TreeView_GetPrevSibling(hTree, htiItemToUp);
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htiPrevPrevItem = TreeView_GetPrevSibling(hTree, htiPrevItem);
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if (!htiPrevPrevItem)
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htiPrevPrevItem = TVI_FIRST;
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// if htiPrevItem == NULL , htiPrevPrevItem == NULL.
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htiNewItem = Tree_Item_Copy(hTree, htiItemToUp, TreeView_GetParent(hTree, htiItemToUp), htiPrevPrevItem);
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TreeView_DeleteItem(hTree, htiItemToUp); // Delete the item and ALL its children.
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TreeView_SelectItem(hTree, htiNewItem);
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return;
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}
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HTREEITEM TreeView_GetFirst(HWND hTree)
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{
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return TreeView_GetRoot(hTree);
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}
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HTREEITEM TreeView_GetLastFromItem(HWND hTree, HTREEITEM hItem)
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{
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HTREEITEM htiRet = NULL;
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HTREEITEM htiIterator;
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for (htiIterator = hItem ; htiIterator ; htiIterator = TreeView_GetNextSibling(hTree, htiIterator))
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htiRet = htiIterator;
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return htiRet;
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}
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HTREEITEM TreeView_GetLast(HWND hTree)
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{
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return TreeView_GetLastFromItem(hTree, TreeView_GetRoot(hTree));
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}
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HTREEITEM TreeView_GetPrev(HWND hTree, HTREEITEM hItem)
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{
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HTREEITEM hPrev, hTmp;
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if (!hTree)
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return NULL;
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hPrev = TreeView_GetPrevSibling(hTree, hItem);
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if (!hPrev)
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return TreeView_GetParent(hTree, hItem);
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hTmp = TreeView_GetChild(hTree, hPrev);
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if (hTmp)
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return TreeView_GetLastFromItem(hTree, hTmp);
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else
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return hPrev;
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}
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HTREEITEM TreeView_GetNext(HWND hTree, HTREEITEM hItem)
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{
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HTREEITEM hNext;
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if (!hTree)
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return NULL;
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hNext = TreeView_GetChild(hTree, hItem);
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if (hNext)
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return hNext;
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hNext = TreeView_GetNextSibling(hTree, hItem);
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if (hNext)
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return hNext;
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else
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return TreeView_GetNextSibling(hTree, TreeView_GetParent(hTree, hItem));
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}
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/* EOF */
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