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wine/dlls/shell32/autocomplete.c

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/*
* AutoComplete interfaces implementation.
*
* Copyright 2004 Maxime Bellengé <maxime.bellenge@laposte.net>
*
* 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; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/*
Implemented:
- ACO_AUTOAPPEND style
- ACO_AUTOSUGGEST style
- ACO_UPDOWNKEYDROPSLIST style
- Handle pwzsRegKeyPath and pwszQuickComplete in Init
TODO:
- implement ACO_SEARCH style
- implement ACO_FILTERPREFIXES style
- implement ACO_USETAB style
- implement ACO_RTLREADING style
- implement ResetEnumerator
- string compares should be case-insensitive, the content of the list should be sorted
*/
#include "config.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#define COBJMACROS
#include "wine/debug.h"
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "undocshell.h"
#include "shlwapi.h"
#include "winerror.h"
#include "objbase.h"
#include "pidl.h"
#include "shlobj.h"
#include "shldisp.h"
#include "debughlp.h"
#include "shell32_main.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(shell);
typedef struct
{
IAutoComplete2 IAutoComplete2_iface;
IAutoCompleteDropDown IAutoCompleteDropDown_iface;
LONG ref;
BOOL initialized;
BOOL enabled;
HWND hwndEdit;
HWND hwndListBox;
WNDPROC wpOrigEditProc;
WNDPROC wpOrigLBoxProc;
WCHAR *txtbackup;
WCHAR *quickComplete;
IEnumString *enumstr;
AUTOCOMPLETEOPTIONS options;
} IAutoCompleteImpl;
static const WCHAR autocomplete_propertyW[] = {'W','i','n','e',' ','A','u','t','o',
'c','o','m','p','l','e','t','e',' ',
'c','o','n','t','r','o','l',0};
static inline IAutoCompleteImpl *impl_from_IAutoComplete2(IAutoComplete2 *iface)
{
return CONTAINING_RECORD(iface, IAutoCompleteImpl, IAutoComplete2_iface);
}
static inline IAutoCompleteImpl *impl_from_IAutoCompleteDropDown(IAutoCompleteDropDown *iface)
{
return CONTAINING_RECORD(iface, IAutoCompleteImpl, IAutoCompleteDropDown_iface);
}
/*
Window procedure for autocompletion
*/
static LRESULT APIENTRY ACEditSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
IAutoCompleteImpl *This = GetPropW(hwnd, autocomplete_propertyW);
LPOLESTR strs;
HRESULT hr;
WCHAR hwndText[255];
WCHAR *hwndQCText;
RECT r;
BOOL control, filled, displayall = FALSE;
int cpt, height, sel;
if (!This->enabled) return CallWindowProcW(This->wpOrigEditProc, hwnd, uMsg, wParam, lParam);
switch (uMsg)
{
case CB_SHOWDROPDOWN:
ShowWindow(This->hwndListBox, SW_HIDE);
break;
case WM_KILLFOCUS:
if ((This->options & ACO_AUTOSUGGEST) && ((HWND)wParam != This->hwndListBox))
{
ShowWindow(This->hwndListBox, SW_HIDE);
}
return CallWindowProcW(This->wpOrigEditProc, hwnd, uMsg, wParam, lParam);
case WM_KEYUP:
{
int len;
GetWindowTextW( hwnd, hwndText, sizeof(hwndText)/sizeof(WCHAR));
switch(wParam) {
case VK_RETURN:
/* If quickComplete is set and control is pressed, replace the string */
control = GetKeyState(VK_CONTROL) & 0x8000;
if (control && This->quickComplete) {
hwndQCText = HeapAlloc(GetProcessHeap(), 0,
(lstrlenW(This->quickComplete)+lstrlenW(hwndText))*sizeof(WCHAR));
sel = sprintfW(hwndQCText, This->quickComplete, hwndText);
SendMessageW(hwnd, WM_SETTEXT, 0, (LPARAM)hwndQCText);
SendMessageW(hwnd, EM_SETSEL, 0, sel);
HeapFree(GetProcessHeap(), 0, hwndQCText);
}
ShowWindow(This->hwndListBox, SW_HIDE);
return 0;
case VK_LEFT:
case VK_RIGHT:
return 0;
case VK_UP:
case VK_DOWN:
/* Two cases here :
- if the listbox is not visible, displays it
with all the entries if the style ACO_UPDOWNKEYDROPSLIST
is present but does not select anything.
- if the listbox is visible, change the selection
*/
if ( (This->options & (ACO_AUTOSUGGEST | ACO_UPDOWNKEYDROPSLIST))
&& (!IsWindowVisible(This->hwndListBox) && (! *hwndText)) )
{
/* We must display all the entries */
displayall = TRUE;
} else {
if (IsWindowVisible(This->hwndListBox)) {
int count;
count = SendMessageW(This->hwndListBox, LB_GETCOUNT, 0, 0);
/* Change the selection */
sel = SendMessageW(This->hwndListBox, LB_GETCURSEL, 0, 0);
if (wParam == VK_UP)
sel = ((sel-1) < 0) ? count-1 : sel-1;
else
sel = ((sel+1) >= count) ? -1 : sel+1;
SendMessageW(This->hwndListBox, LB_SETCURSEL, sel, 0);
if (sel != -1) {
WCHAR *msg;
int len;
len = SendMessageW(This->hwndListBox, LB_GETTEXTLEN, sel, 0);
msg = HeapAlloc(GetProcessHeap(), 0, (len+1)*sizeof(WCHAR));
SendMessageW(This->hwndListBox, LB_GETTEXT, sel, (LPARAM)msg);
SendMessageW(hwnd, WM_SETTEXT, 0, (LPARAM)msg);
SendMessageW(hwnd, EM_SETSEL, lstrlenW(msg), lstrlenW(msg));
HeapFree(GetProcessHeap(), 0, msg);
} else {
SendMessageW(hwnd, WM_SETTEXT, 0, (LPARAM)This->txtbackup);
SendMessageW(hwnd, EM_SETSEL, lstrlenW(This->txtbackup), lstrlenW(This->txtbackup));
}
}
return 0;
}
break;
case VK_BACK:
case VK_DELETE:
if ((! *hwndText) && (This->options & ACO_AUTOSUGGEST)) {
ShowWindow(This->hwndListBox, SW_HIDE);
return CallWindowProcW(This->wpOrigEditProc, hwnd, uMsg, wParam, lParam);
}
if (This->options & ACO_AUTOAPPEND) {
DWORD b;
SendMessageW(hwnd, EM_GETSEL, (WPARAM)&b, 0);
if (b>1) {
hwndText[b-1] = '\0';
} else {
hwndText[0] = '\0';
SetWindowTextW(hwnd, hwndText);
}
}
break;
default:
;
}
SendMessageW(This->hwndListBox, LB_RESETCONTENT, 0, 0);
HeapFree(GetProcessHeap(), 0, This->txtbackup);
len = strlenW(hwndText);
This->txtbackup = HeapAlloc(GetProcessHeap(), 0, (len + 1)*sizeof(WCHAR));
lstrcpyW(This->txtbackup, hwndText);
/* Returns if there is no text to search and we doesn't want to display all the entries */
if ((!displayall) && (! *hwndText) )
break;
IEnumString_Reset(This->enumstr);
filled = FALSE;
for(cpt = 0;;) {
ULONG fetched;
hr = IEnumString_Next(This->enumstr, 1, &strs, &fetched);
if (hr != S_OK)
break;
if (!strncmpiW(hwndText, strs, len)) {
if (!filled && (This->options & ACO_AUTOAPPEND)) {
WCHAR buffW[255];
strcpyW(buffW, hwndText);
strcatW(buffW, &strs[len]);
SetWindowTextW(hwnd, buffW);
SendMessageW(hwnd, EM_SETSEL, len, strlenW(strs));
if (!(This->options & ACO_AUTOSUGGEST))
break;
}
if (This->options & ACO_AUTOSUGGEST) {
SendMessageW(This->hwndListBox, LB_ADDSTRING, 0, (LPARAM)strs);
cpt++;
}
filled = TRUE;
}
}
if (This->options & ACO_AUTOSUGGEST) {
if (filled) {
height = SendMessageW(This->hwndListBox, LB_GETITEMHEIGHT, 0, 0);
SendMessageW(This->hwndListBox, LB_CARETOFF, 0, 0);
GetWindowRect(hwnd, &r);
SetParent(This->hwndListBox, HWND_DESKTOP);
/* It seems that Windows XP displays 7 lines at most
and otherwise displays a vertical scroll bar */
SetWindowPos(This->hwndListBox, HWND_TOP,
r.left, r.bottom + 1, r.right - r.left, min(height * 7, height*(cpt+1)),
SWP_SHOWWINDOW );
} else {
ShowWindow(This->hwndListBox, SW_HIDE);
}
}
break;
}
case WM_DESTROY:
{
WNDPROC proc = This->wpOrigEditProc;
RemovePropW(hwnd, autocomplete_propertyW);
SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)proc);
This->hwndEdit = NULL;
if (This->hwndListBox)
DestroyWindow(This->hwndListBox);
IAutoComplete2_Release(&This->IAutoComplete2_iface);
return CallWindowProcW(proc, hwnd, uMsg, wParam, lParam);
}
default:
return CallWindowProcW(This->wpOrigEditProc, hwnd, uMsg, wParam, lParam);
}
return 0;
}
static LRESULT APIENTRY ACLBoxSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
IAutoCompleteImpl *This = (IAutoCompleteImpl *)GetWindowLongPtrW(hwnd, GWLP_USERDATA);
WCHAR *msg;
int sel, len;
switch (uMsg) {
case WM_MOUSEMOVE:
sel = SendMessageW(hwnd, LB_ITEMFROMPOINT, 0, lParam);
SendMessageW(hwnd, LB_SETCURSEL, sel, 0);
break;
case WM_LBUTTONDOWN:
sel = SendMessageW(hwnd, LB_GETCURSEL, 0, 0);
if (sel < 0)
break;
len = SendMessageW(This->hwndListBox, LB_GETTEXTLEN, sel, 0);
msg = HeapAlloc(GetProcessHeap(), 0, (len+1)*sizeof(WCHAR));
SendMessageW(hwnd, LB_GETTEXT, sel, (LPARAM)msg);
SendMessageW(This->hwndEdit, WM_SETTEXT, 0, (LPARAM)msg);
SendMessageW(This->hwndEdit, EM_SETSEL, 0, lstrlenW(msg));
ShowWindow(hwnd, SW_HIDE);
HeapFree(GetProcessHeap(), 0, msg);
break;
default:
return CallWindowProcW(This->wpOrigLBoxProc, hwnd, uMsg, wParam, lParam);
}
return 0;
}
static void create_listbox(IAutoCompleteImpl *This)
{
HWND hwndParent;
hwndParent = GetParent(This->hwndEdit);
/* FIXME : The listbox should be resizable with the mouse. WS_THICKFRAME looks ugly */
This->hwndListBox = CreateWindowExW(0, WC_LISTBOXW, NULL,
WS_BORDER | WS_CHILD | WS_VSCROLL | LBS_HASSTRINGS | LBS_NOTIFY | LBS_NOINTEGRALHEIGHT,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
hwndParent, NULL, shell32_hInstance, NULL );
if (This->hwndListBox) {
This->wpOrigLBoxProc = (WNDPROC) SetWindowLongPtrW( This->hwndListBox, GWLP_WNDPROC, (LONG_PTR) ACLBoxSubclassProc);
SetWindowLongPtrW( This->hwndListBox, GWLP_USERDATA, (LONG_PTR)This);
}
}
/**************************************************************************
* AutoComplete_QueryInterface
*/
static HRESULT WINAPI IAutoComplete2_fnQueryInterface(
IAutoComplete2 * iface,
REFIID riid,
LPVOID *ppvObj)
{
IAutoCompleteImpl *This = impl_from_IAutoComplete2(iface);
TRACE("(%p)->(IID:%s,%p)\n", This, shdebugstr_guid(riid), ppvObj);
*ppvObj = NULL;
if (IsEqualIID(riid, &IID_IUnknown) ||
IsEqualIID(riid, &IID_IAutoComplete) ||
IsEqualIID(riid, &IID_IAutoComplete2))
{
*ppvObj = &This->IAutoComplete2_iface;
}
else if (IsEqualIID(riid, &IID_IAutoCompleteDropDown))
{
*ppvObj = &This->IAutoCompleteDropDown_iface;
}
if (*ppvObj)
{
IUnknown_AddRef((IUnknown*)*ppvObj);
TRACE("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
return S_OK;
}
WARN("unsupported interface: %s\n", debugstr_guid(riid));
return E_NOINTERFACE;
}
/******************************************************************************
* IAutoComplete2_fnAddRef
*/
static ULONG WINAPI IAutoComplete2_fnAddRef(
IAutoComplete2 * iface)
{
IAutoCompleteImpl *This = impl_from_IAutoComplete2(iface);
ULONG refCount = InterlockedIncrement(&This->ref);
TRACE("(%p)->(%u)\n", This, refCount - 1);
return refCount;
}
/******************************************************************************
* IAutoComplete2_fnRelease
*/
static ULONG WINAPI IAutoComplete2_fnRelease(
IAutoComplete2 * iface)
{
IAutoCompleteImpl *This = impl_from_IAutoComplete2(iface);
ULONG refCount = InterlockedDecrement(&This->ref);
TRACE("(%p)->(%u)\n", This, refCount + 1);
if (!refCount) {
TRACE("destroying IAutoComplete(%p)\n", This);
HeapFree(GetProcessHeap(), 0, This->quickComplete);
HeapFree(GetProcessHeap(), 0, This->txtbackup);
if (This->enumstr)
IEnumString_Release(This->enumstr);
HeapFree(GetProcessHeap(), 0, This);
}
return refCount;
}
/******************************************************************************
* IAutoComplete2_fnEnable
*/
static HRESULT WINAPI IAutoComplete2_fnEnable(
IAutoComplete2 * iface,
BOOL fEnable)
{
IAutoCompleteImpl *This = impl_from_IAutoComplete2(iface);
HRESULT hr = S_OK;
TRACE("(%p)->(%s)\n", This, (fEnable)?"true":"false");
This->enabled = fEnable;
return hr;
}
/******************************************************************************
* IAutoComplete2_fnInit
*/
static HRESULT WINAPI IAutoComplete2_fnInit(
IAutoComplete2 * iface,
HWND hwndEdit,
IUnknown *punkACL,
LPCOLESTR pwzsRegKeyPath,
LPCOLESTR pwszQuickComplete)
{
IAutoCompleteImpl *This = impl_from_IAutoComplete2(iface);
TRACE("(%p)->(%p, %p, %s, %s)\n",
This, hwndEdit, punkACL, debugstr_w(pwzsRegKeyPath), debugstr_w(pwszQuickComplete));
if (This->options & ACO_SEARCH) FIXME(" ACO_SEARCH not supported\n");
if (This->options & ACO_FILTERPREFIXES) FIXME(" ACO_FILTERPREFIXES not supported\n");
if (This->options & ACO_USETAB) FIXME(" ACO_USETAB not supported\n");
if (This->options & ACO_RTLREADING) FIXME(" ACO_RTLREADING not supported\n");
if (!hwndEdit || !punkACL)
return E_INVALIDARG;
if (This->initialized)
{
WARN("Autocompletion object is already initialized\n");
/* This->hwndEdit is set to NULL when the edit window is destroyed. */
return This->hwndEdit ? E_FAIL : E_UNEXPECTED;
}
if (FAILED (IUnknown_QueryInterface (punkACL, &IID_IEnumString, (LPVOID*)&This->enumstr))) {
WARN("No IEnumString interface\n");
return E_NOINTERFACE;
}
This->initialized = TRUE;
This->hwndEdit = hwndEdit;
This->wpOrigEditProc = (WNDPROC) SetWindowLongPtrW( hwndEdit, GWLP_WNDPROC, (LONG_PTR) ACEditSubclassProc);
/* Keep at least one reference to the object until the edit window is destroyed. */
IAutoComplete2_AddRef(&This->IAutoComplete2_iface);
SetPropW( hwndEdit, autocomplete_propertyW, This );
if (This->options & ACO_AUTOSUGGEST)
create_listbox(This);
if (pwzsRegKeyPath) {
WCHAR *key;
WCHAR result[MAX_PATH];
WCHAR *value;
HKEY hKey = 0;
LONG res;
LONG len;
/* pwszRegKeyPath contains the key as well as the value, so we split */
key = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(pwzsRegKeyPath)+1)*sizeof(WCHAR));
strcpyW(key, pwzsRegKeyPath);
value = strrchrW(key, '\\');
*value = 0;
value++;
/* Now value contains the value and buffer the key */
res = RegOpenKeyExW(HKEY_CURRENT_USER, key, 0, KEY_READ, &hKey);
if (res != ERROR_SUCCESS) {
/* if the key is not found, MSDN states we must seek in HKEY_LOCAL_MACHINE */
res = RegOpenKeyExW(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hKey);
}
if (res == ERROR_SUCCESS) {
res = RegQueryValueW(hKey, value, result, &len);
if (res == ERROR_SUCCESS) {
This->quickComplete = HeapAlloc(GetProcessHeap(), 0, len*sizeof(WCHAR));
strcpyW(This->quickComplete, result);
}
RegCloseKey(hKey);
}
HeapFree(GetProcessHeap(), 0, key);
}
if ((pwszQuickComplete) && (!This->quickComplete)) {
This->quickComplete = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(pwszQuickComplete)+1)*sizeof(WCHAR));
lstrcpyW(This->quickComplete, pwszQuickComplete);
}
return S_OK;
}
/**************************************************************************
* IAutoComplete2_fnGetOptions
*/
static HRESULT WINAPI IAutoComplete2_fnGetOptions(
IAutoComplete2 * iface,
DWORD *pdwFlag)
{
IAutoCompleteImpl *This = impl_from_IAutoComplete2(iface);
HRESULT hr = S_OK;
TRACE("(%p) -> (%p)\n", This, pdwFlag);
*pdwFlag = This->options;
return hr;
}
/**************************************************************************
* IAutoComplete2_fnSetOptions
*/
static HRESULT WINAPI IAutoComplete2_fnSetOptions(
IAutoComplete2 * iface,
DWORD dwFlag)
{
IAutoCompleteImpl *This = impl_from_IAutoComplete2(iface);
HRESULT hr = S_OK;
TRACE("(%p) -> (0x%x)\n", This, dwFlag);
This->options = dwFlag;
if ((This->options & ACO_AUTOSUGGEST) && This->hwndEdit && !This->hwndListBox)
create_listbox(This);
return hr;
}
/**************************************************************************
* IAutoComplete2 VTable
*/
static const IAutoComplete2Vtbl acvt =
{
IAutoComplete2_fnQueryInterface,
IAutoComplete2_fnAddRef,
IAutoComplete2_fnRelease,
IAutoComplete2_fnInit,
IAutoComplete2_fnEnable,
/* IAutoComplete2 */
IAutoComplete2_fnSetOptions,
IAutoComplete2_fnGetOptions,
};
static HRESULT WINAPI IAutoCompleteDropDown_fnQueryInterface(IAutoCompleteDropDown *iface,
REFIID riid, LPVOID *ppvObj)
{
IAutoCompleteImpl *This = impl_from_IAutoCompleteDropDown(iface);
return IAutoComplete2_QueryInterface(&This->IAutoComplete2_iface, riid, ppvObj);
}
static ULONG WINAPI IAutoCompleteDropDown_fnAddRef(IAutoCompleteDropDown *iface)
{
IAutoCompleteImpl *This = impl_from_IAutoCompleteDropDown(iface);
return IAutoComplete2_AddRef(&This->IAutoComplete2_iface);
}
static ULONG WINAPI IAutoCompleteDropDown_fnRelease(IAutoCompleteDropDown *iface)
{
IAutoCompleteImpl *This = impl_from_IAutoCompleteDropDown(iface);
return IAutoComplete2_Release(&This->IAutoComplete2_iface);
}
/**************************************************************************
* IAutoCompleteDropDown_fnGetDropDownStatus
*/
static HRESULT WINAPI IAutoCompleteDropDown_fnGetDropDownStatus(
IAutoCompleteDropDown *iface,
DWORD *pdwFlags,
LPWSTR *ppwszString)
{
IAutoCompleteImpl *This = impl_from_IAutoCompleteDropDown(iface);
BOOL dropped;
TRACE("(%p) -> (%p, %p)\n", This, pdwFlags, ppwszString);
dropped = IsWindowVisible(This->hwndListBox);
if (pdwFlags)
*pdwFlags = (dropped ? ACDD_VISIBLE : 0);
if (ppwszString) {
if (dropped) {
int sel;
sel = SendMessageW(This->hwndListBox, LB_GETCURSEL, 0, 0);
if (sel >= 0)
{
DWORD len;
len = SendMessageW(This->hwndListBox, LB_GETTEXTLEN, sel, 0);
*ppwszString = CoTaskMemAlloc((len+1)*sizeof(WCHAR));
SendMessageW(This->hwndListBox, LB_GETTEXT, sel, (LPARAM)*ppwszString);
}
else
*ppwszString = NULL;
}
else
*ppwszString = NULL;
}
return S_OK;
}
/**************************************************************************
* IAutoCompleteDropDown_fnResetEnumarator
*/
static HRESULT WINAPI IAutoCompleteDropDown_fnResetEnumerator(
IAutoCompleteDropDown *iface)
{
IAutoCompleteImpl *This = impl_from_IAutoCompleteDropDown(iface);
FIXME("(%p): stub\n", This);
return E_NOTIMPL;
}
/**************************************************************************
* IAutoCompleteDropDown VTable
*/
static const IAutoCompleteDropDownVtbl acdropdownvt =
{
IAutoCompleteDropDown_fnQueryInterface,
IAutoCompleteDropDown_fnAddRef,
IAutoCompleteDropDown_fnRelease,
IAutoCompleteDropDown_fnGetDropDownStatus,
IAutoCompleteDropDown_fnResetEnumerator,
};
/**************************************************************************
* IAutoComplete_Constructor
*/
HRESULT WINAPI IAutoComplete_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
{
IAutoCompleteImpl *lpac;
HRESULT hr;
if (pUnkOuter && !IsEqualIID (riid, &IID_IUnknown))
return CLASS_E_NOAGGREGATION;
lpac = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IAutoCompleteImpl));
if (!lpac)
return E_OUTOFMEMORY;
lpac->ref = 1;
lpac->IAutoComplete2_iface.lpVtbl = &acvt;
lpac->IAutoCompleteDropDown_iface.lpVtbl = &acdropdownvt;
lpac->enabled = TRUE;
lpac->options = ACO_AUTOAPPEND;
hr = IAutoComplete2_QueryInterface(&lpac->IAutoComplete2_iface, riid, ppv);
IAutoComplete2_Release(&lpac->IAutoComplete2_iface);
TRACE("-- (%p)->\n",lpac);
return hr;
}
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