autocomplete.c 18.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/*
 *	AutoComplete interfaces implementation.
 *
 *	Copyright 2004	Maxime Belleng <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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

21 22 23 24 25 26
/*
  Implemented:
  - ACO_AUTOAPPEND style
  - ACO_AUTOSUGGEST style
  - ACO_UPDOWNKEYDROPSLIST style

27 28
  - Handle pwzsRegKeyPath and pwszQuickComplete in Init

29 30 31 32 33 34 35 36 37
  TODO:
  - implement ACO_SEARCH style
  - implement ACO_FILTERPREFIXES style
  - implement ACO_USETAB style
  - implement ACO_RTLREADING style
  
 */
#include "config.h"

38 39 40
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
41 42 43

#define COBJMACROS

44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
#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 "shlguid.h"
#include "shlobj.h"
#include "shldisp.h"
#include "debughlp.h"

59 60
#include "wine/unicode.h"

61 62 63 64
WINE_DEFAULT_DEBUG_CHANNEL(shell);

typedef struct
{
65 66
    IAutoCompleteVtbl  *lpVtbl;
    IAutoComplete2Vtbl *lpvtblAutoComplete2;
67
    DWORD ref;
68
    BOOL  enabled;
69 70 71 72 73
    HWND hwndEdit;
    HWND hwndListBox;
    WNDPROC wpOrigEditProc;
    WNDPROC wpOrigLBoxProc;
    WCHAR *txtbackup;
74
    WCHAR *quickComplete;
75
    IEnumString *enumstr;
76 77 78
    AUTOCOMPLETEOPTIONS options;
} IAutoCompleteImpl;

79 80
static struct IAutoCompleteVtbl acvt;
static struct IAutoComplete2Vtbl ac2vt;
81 82 83 84 85

#define _IAutoComplete2_Offset ((int)(&(((IAutoCompleteImpl*)0)->lpvtblAutoComplete2)))
#define _ICOM_THIS_From_IAutoComplete2(class, name) class* This = (class*)(((char*)name)-_IAutoComplete2_Offset);

/*
86
  converts This to an interface pointer
87 88 89 90
*/
#define _IUnknown_(This) (IUnknown*)&(This->lpVtbl)
#define _IAutoComplete2_(This)  (IAutoComplete2*)&(This->lpvtblAutoComplete2) 

91 92 93
static LRESULT APIENTRY ACEditSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
static LRESULT APIENTRY ACLBoxSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

94 95 96 97 98 99 100 101 102 103
/**************************************************************************
 *  IAutoComplete_Constructor
 */
HRESULT WINAPI IAutoComplete_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
{
    IAutoCompleteImpl *lpac;

    if (pUnkOuter && !IsEqualIID (riid, &IID_IUnknown))
	return CLASS_E_NOAGGREGATION;

104
    lpac = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IAutoCompleteImpl));
105 106 107 108 109 110
    if (!lpac) 
	return E_OUTOFMEMORY;

    lpac->ref = 1;
    lpac->lpVtbl = &acvt;
    lpac->lpvtblAutoComplete2 = &ac2vt;
111
    lpac->enabled = TRUE;
112 113 114 115 116
    lpac->enumstr = NULL;
    lpac->options = ACO_AUTOAPPEND;
    lpac->wpOrigEditProc = NULL;
    lpac->hwndListBox = NULL;
    lpac->txtbackup = NULL;
117
    lpac->quickComplete = NULL;
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
    
    if (!SUCCEEDED (IUnknown_QueryInterface (_IUnknown_ (lpac), riid, ppv))) {
	IUnknown_Release (_IUnknown_ (lpac));
	return E_NOINTERFACE;
    }
    
    TRACE("-- (%p)->\n",lpac);

    return S_OK;
}

/**************************************************************************
 *  AutoComplete_QueryInterface
 */
static HRESULT WINAPI IAutoComplete_fnQueryInterface(
    IAutoComplete * iface,
    REFIID riid,
    LPVOID *ppvObj)
{
137
    IAutoCompleteImpl *This = (IAutoCompleteImpl *)iface;
138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
    
    TRACE("(%p)->(\n\tIID:\t%s,%p)\n", This, shdebugstr_guid(riid), ppvObj);
    *ppvObj = NULL;

    if(IsEqualIID(riid, &IID_IUnknown)) 
    {
	*ppvObj = This;
    } 
    else if(IsEqualIID(riid, &IID_IAutoComplete))
    {
	*ppvObj = (IAutoComplete*)This;
    }
    else if(IsEqualIID(riid, &IID_IAutoComplete2))
    {
	*ppvObj = _IAutoComplete2_ (This);
    }

    if (*ppvObj)
    {
	IAutoComplete_AddRef((IAutoComplete*)*ppvObj);
	TRACE("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
	return S_OK;
    }
    TRACE("-- Interface: E_NOINTERFACE\n");
    return E_NOINTERFACE;	
}

/******************************************************************************
 * IAutoComplete_fnAddRef
 */
static ULONG WINAPI IAutoComplete_fnAddRef(
	IAutoComplete * iface)
{
171
    IAutoCompleteImpl *This = (IAutoCompleteImpl *)iface;
172
    ULONG refCount = InterlockedIncrement(&This->ref);
173
    
174 175 176
    TRACE("(%p)->(%lu)\n", This, refCount - 1);

    return refCount;
177 178 179 180 181 182 183 184
}

/******************************************************************************
 * IAutoComplete_fnRelease
 */
static ULONG WINAPI IAutoComplete_fnRelease(
	IAutoComplete * iface)
{
185
    IAutoCompleteImpl *This = (IAutoCompleteImpl *)iface;
186
    ULONG refCount = InterlockedDecrement(&This->ref);
187
    
188
    TRACE("(%p)->(%lu)\n", This, refCount + 1);
189

190
    if (!refCount) {
191
	TRACE(" destroying IAutoComplete(%p)\n",This);
192 193
        HeapFree(GetProcessHeap(), 0, This->quickComplete);
        HeapFree(GetProcessHeap(), 0, This->txtbackup);
194 195 196 197
	if (This->hwndListBox)
	    DestroyWindow(This->hwndListBox);
	if (This->enumstr)
	    IEnumString_Release(This->enumstr);
198 199
	HeapFree(GetProcessHeap(), 0, This);
    }
200
    return refCount;
201 202 203 204 205 206 207 208 209
}

/******************************************************************************
 * IAutoComplete_fnEnable
 */
static HRESULT WINAPI IAutoComplete_fnEnable(
    IAutoComplete * iface,
    BOOL fEnable)
{
210
    IAutoCompleteImpl *This = (IAutoCompleteImpl *)iface;
211 212 213 214 215

    HRESULT hr = S_OK;

    TRACE("(%p)->(%s)\n", This, (fEnable)?"true":"false");

216
    This->enabled = fEnable;
217 218 219 220 221 222 223 224 225 226 227 228 229 230

    return hr;
}

/******************************************************************************
 * IAutoComplete_fnInit
 */
static HRESULT WINAPI IAutoComplete_fnInit(
    IAutoComplete * iface,
    HWND hwndEdit,
    IUnknown *punkACL,
    LPCOLESTR pwzsRegKeyPath,
    LPCOLESTR pwszQuickComplete)
{
231
    IAutoCompleteImpl *This = (IAutoCompleteImpl *)iface;
232
    static const WCHAR lbName[] = {'L','i','s','t','B','o','x',0};
233

234
    TRACE("(%p)->(0x%08lx, %p, %s, %s)\n", 
235 236
	  This, (long)hwndEdit, punkACL, debugstr_w(pwzsRegKeyPath), debugstr_w(pwszQuickComplete));

237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264
    if (This->options & ACO_AUTOSUGGEST) TRACE(" ACO_AUTOSUGGEST\n");
    if (This->options & ACO_AUTOAPPEND) TRACE(" ACO_AUTOAPPEND\n");
    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_UPDOWNKEYDROPSLIST) TRACE(" ACO_UPDOWNKEYDROPSLIST\n");
    if (This->options & ACO_RTLREADING) FIXME(" ACO_RTLREADING not supported\n");

    This->hwndEdit = hwndEdit;

    if (!SUCCEEDED (IUnknown_QueryInterface (punkACL, &IID_IEnumString, (LPVOID*)&This->enumstr))) {
	TRACE("No IEnumString interface\n");
	return  E_NOINTERFACE;
    }

    This->wpOrigEditProc = (WNDPROC) SetWindowLongPtrW( hwndEdit, GWLP_WNDPROC, (LONG_PTR) ACEditSubclassProc);
    SetWindowLongPtrW( hwndEdit, GWLP_USERDATA, (LONG_PTR)This);

    if (This->options & ACO_AUTOSUGGEST) {
	HWND hwndParent;

	hwndParent = GetParent(This->hwndEdit);
	
	/* FIXME : The listbox should be resizable with the mouse. WS_THICKFRAME looks ugly */
	This->hwndListBox = CreateWindowExW(0, lbName, NULL, 
					    WS_BORDER | WS_CHILD | WS_VSCROLL | LBS_HASSTRINGS | LBS_NOTIFY | LBS_NOINTEGRALHEIGHT, 
					    CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
					    hwndParent, NULL, 
265
					    (HINSTANCE)GetWindowLongPtrW( hwndParent, GWLP_HINSTANCE ), NULL);
266
					    
267 268 269
	if (This->hwndListBox) {
	    This->wpOrigLBoxProc = (WNDPROC) SetWindowLongPtrW( This->hwndListBox, GWLP_WNDPROC, (LONG_PTR) ACLBoxSubclassProc);
	    SetWindowLongPtrW( This->hwndListBox, GWLP_USERDATA, (LONG_PTR)This);
270 271 272
	}
    }

273 274 275 276 277 278 279 280 281
    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 */
282
	key = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (lstrlenW(pwzsRegKeyPath)+1)*sizeof(WCHAR));
283 284 285 286 287 288 289 290 291 292 293 294 295
	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) {
296
		This->quickComplete = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len*sizeof(WCHAR));
297 298 299 300 301 302 303 304
		strcpyW(This->quickComplete, result);
	    }
	    RegCloseKey(hKey);
	}
	HeapFree(GetProcessHeap(), 0, key);
    }

    if ((pwszQuickComplete) && (!This->quickComplete)) {
305
	This->quickComplete = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (lstrlenW(pwszQuickComplete)+1)*sizeof(WCHAR));
306 307
	lstrcpyW(This->quickComplete, pwszQuickComplete);
    }
308 309

    return S_OK;
310 311 312 313 314
}

/**************************************************************************
 *  IAutoComplete_fnVTable
 */
315
static IAutoCompleteVtbl acvt =
316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403
{
    IAutoComplete_fnQueryInterface,
    IAutoComplete_fnAddRef,
    IAutoComplete_fnRelease,
    IAutoComplete_fnInit,
    IAutoComplete_fnEnable,
};

/**************************************************************************
 *  AutoComplete2_QueryInterface
 */
static HRESULT WINAPI IAutoComplete2_fnQueryInterface(
    IAutoComplete2 * iface,
    REFIID riid,
    LPVOID *ppvObj)
{
    _ICOM_THIS_From_IAutoComplete2(IAutoCompleteImpl, iface);

    TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);

    return IAutoComplete_QueryInterface((IAutoComplete*)This, riid, ppvObj);
}

/******************************************************************************
 * IAutoComplete2_fnAddRef
 */
static ULONG WINAPI IAutoComplete2_fnAddRef(
	IAutoComplete2 * iface)
{
    _ICOM_THIS_From_IAutoComplete2(IAutoCompleteImpl,iface);

    TRACE ("(%p)->(count=%lu)\n", This, This->ref);

    return IAutoComplete2_AddRef((IAutoComplete*)This);
}

/******************************************************************************
 * IAutoComplete2_fnRelease
 */
static ULONG WINAPI IAutoComplete2_fnRelease(
	IAutoComplete2 * iface)
{
    _ICOM_THIS_From_IAutoComplete2(IAutoCompleteImpl,iface);

    TRACE ("(%p)->(count=%lu)\n", This, This->ref);

    return IAutoComplete_Release((IAutoComplete*)This);
}

/******************************************************************************
 * IAutoComplete2_fnEnable
 */
static HRESULT WINAPI IAutoComplete2_fnEnable(
    IAutoComplete2 * iface,
    BOOL fEnable)
{
    _ICOM_THIS_From_IAutoComplete2(IAutoCompleteImpl, iface);

    TRACE ("(%p)->(%s)\n", This, (fEnable)?"true":"false");

    return IAutoComplete_Enable((IAutoComplete*)This, fEnable);
}

/******************************************************************************
 * IAutoComplete2_fnInit
 */
static HRESULT WINAPI IAutoComplete2_fnInit(
    IAutoComplete2 * iface,
    HWND hwndEdit,
    IUnknown *punkACL,
    LPCOLESTR pwzsRegKeyPath,
    LPCOLESTR pwszQuickComplete)
{
    _ICOM_THIS_From_IAutoComplete2(IAutoCompleteImpl, iface);

    TRACE("(%p)\n", This);

    return IAutoComplete_Init((IAutoComplete*)This, hwndEdit, punkACL, pwzsRegKeyPath, pwszQuickComplete);
}

/**************************************************************************
 *  IAutoComplete_fnGetOptions
 */
static HRESULT WINAPI IAutoComplete2_fnGetOptions(
    IAutoComplete2 * iface,
    DWORD *pdwFlag)
{
    HRESULT hr = S_OK;
404

405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424
    _ICOM_THIS_From_IAutoComplete2(IAutoCompleteImpl, iface);

    TRACE("(%p) -> (%p)\n", This, pdwFlag);

    *pdwFlag = This->options;

    return hr;
}

/**************************************************************************
 *  IAutoComplete_fnSetOptions
 */
static HRESULT WINAPI IAutoComplete2_fnSetOptions(
    IAutoComplete2 * iface,
    DWORD dwFlag)
{
    HRESULT hr = S_OK;

    _ICOM_THIS_From_IAutoComplete2(IAutoCompleteImpl, iface);

425 426 427
    TRACE("(%p) -> (0x%lx)\n", This, dwFlag);

    This->options = dwFlag;
428 429 430 431 432 433 434

    return hr;
}

/**************************************************************************
 *  IAutoComplete2_fnVTable
 */
435
static IAutoComplete2Vtbl ac2vt =
436 437 438 439 440 441 442 443 444 445
{
    IAutoComplete2_fnQueryInterface,
    IAutoComplete2_fnAddRef,
    IAutoComplete2_fnRelease,
    IAutoComplete2_fnInit,
    IAutoComplete2_fnEnable,
    /* IAutoComplete2 */
    IAutoComplete2_fnSetOptions,
    IAutoComplete2_fnGetOptions,
};
446 447 448 449 450 451

/*
  Window procedure for autocompletion
 */
static LRESULT APIENTRY ACEditSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
452
    IAutoCompleteImpl *This = (IAutoCompleteImpl *)GetWindowLongPtrW(hwnd, GWLP_USERDATA);
453 454 455
    LPOLESTR strs;
    HRESULT hr;
    WCHAR hwndText[255];
456
    WCHAR *hwndQCText;
457
    RECT r;
458
    BOOL control, filled, displayall = FALSE;
459 460
    int cpt, height, sel;

461 462
    if (!This->enabled) return CallWindowProcW(This->wpOrigEditProc, hwnd, uMsg, wParam, lParam);

463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479
    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);
	    }
	    break;
	case WM_KEYUP:
	    
	    GetWindowTextW( hwnd, (LPWSTR)hwndText, 255);
      
	    switch(wParam) {
480 481 482 483
		case VK_RETURN:
		    /* If quickComplete is set and control is pressed, replace the string */
		    control = GetKeyState(VK_CONTROL) & 0x8000;		    
		    if (control && This->quickComplete) {
484
			hwndQCText = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 
485 486 487 488 489 490 491 492 493 494 495 496
						       (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;
497 498 499 500 501 502 503 504 505 506 507 508 509 510
		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 dispays all the entries */
			 displayall = TRUE;
		    } else {
511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526
			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, (LPARAM)NULL);
527
				msg = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (len+1)*sizeof(WCHAR));
528 529 530 531 532 533 534 535 536
				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));
			    }			
			} 		
537
			return 0;
538
		    }
539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563
		    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, (LPARAM)NULL);
			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);
564
	    This->txtbackup = HeapAlloc(GetProcessHeap(),
565
						 HEAP_ZERO_MEMORY, (lstrlenW(hwndText)+1)*sizeof(WCHAR));							      
566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621
	    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;;) {
		hr = IEnumString_Next(This->enumstr, 1, &strs, NULL);
		if (hr != S_OK)
		    break;

		if ((LPWSTR)strstrW(strs, hwndText) == strs) {
		    
		    if (This->options & ACO_AUTOAPPEND) {
			SetWindowTextW(hwnd, strs);
			SendMessageW(hwnd, EM_SETSEL, lstrlenW(hwndText), lstrlenW(strs));
			break;
		    }		

		    if (This->options & ACO_AUTOSUGGEST) {
			SendMessageW(This->hwndListBox, LB_ADDSTRING, 0, (LPARAM)strs);
			filled = TRUE;
			cpt++;
		    }
		}		
	    }
	    
	    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; 
	default:
	    return CallWindowProcW(This->wpOrigEditProc, hwnd, uMsg, wParam, lParam);
	    
    }

    return 0;
}

static LRESULT APIENTRY ACLBoxSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
622
    IAutoCompleteImpl *This = (IAutoCompleteImpl *)GetWindowLongPtrW(hwnd, GWLP_USERDATA);
623 624 625 626 627 628 629 630 631 632
    WCHAR *msg;
    int sel = -1, len;

    switch (uMsg) {
	case WM_MOUSEMOVE:
	    sel = SendMessageW(hwnd, LB_ITEMFROMPOINT, 0, lParam);
	    SendMessageW(hwnd, LB_SETCURSEL, (WPARAM)sel, (LPARAM)0);
	    break;
	case WM_LBUTTONDOWN:
	    len = SendMessageW(This->hwndListBox, LB_GETTEXTLEN, sel, (LPARAM)NULL);
633
	    msg = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (len+1)*sizeof(WCHAR));
634 635 636 637 638 639 640 641 642 643 644 645
	    sel = (INT)SendMessageW(hwnd, LB_GETCURSEL, 0, 0);
	    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;
}